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elf64-s390.c revision 1.1.1.3
      1      1.1  christos /* IBM S/390-specific support for 64-bit ELF
      2  1.1.1.2  christos    Copyright (C) 2000-2015 Free Software Foundation, Inc.
      3      1.1  christos    Contributed Martin Schwidefsky (schwidefsky (at) de.ibm.com).
      4      1.1  christos 
      5      1.1  christos    This file is part of BFD, the Binary File Descriptor library.
      6      1.1  christos 
      7      1.1  christos    This program is free software; you can redistribute it and/or modify
      8      1.1  christos    it under the terms of the GNU General Public License as published by
      9      1.1  christos    the Free Software Foundation; either version 3 of the License, or
     10      1.1  christos    (at your option) any later version.
     11      1.1  christos 
     12      1.1  christos    This program is distributed in the hope that it will be useful,
     13      1.1  christos    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14      1.1  christos    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15      1.1  christos    GNU General Public License for more details.
     16      1.1  christos 
     17      1.1  christos    You should have received a copy of the GNU General Public License
     18      1.1  christos    along with this program; if not, write to the Free Software
     19      1.1  christos    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
     20      1.1  christos    02110-1301, USA.  */
     21      1.1  christos 
     22      1.1  christos #include "sysdep.h"
     23      1.1  christos #include "bfd.h"
     24      1.1  christos #include "bfdlink.h"
     25      1.1  christos #include "libbfd.h"
     26      1.1  christos #include "elf-bfd.h"
     27      1.1  christos #include "elf/s390.h"
     28      1.1  christos 
     29      1.1  christos /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
     30      1.1  christos    from smaller values.  Start with zero, widen, *then* decrement.  */
     31      1.1  christos #define MINUS_ONE      (((bfd_vma)0) - 1)
     32      1.1  christos 
     33      1.1  christos static bfd_reloc_status_type
     34      1.1  christos s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
     35      1.1  christos 		asection *, bfd *, char **);
     36      1.1  christos static bfd_reloc_status_type
     37      1.1  christos s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
     38      1.1  christos 		      asection *, bfd *, char **);
     39      1.1  christos 
     40      1.1  christos /* The relocation "howto" table.  */
     41      1.1  christos static reloc_howto_type elf_howto_table[] =
     42      1.1  christos {
     43      1.1  christos   HOWTO (R_390_NONE,		/* type */
     44      1.1  christos 	 0,			/* rightshift */
     45  1.1.1.3  christos 	 3,			/* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
     46      1.1  christos 	 0,			/* bitsize */
     47      1.1  christos 	 FALSE,			/* pc_relative */
     48      1.1  christos 	 0,			/* bitpos */
     49      1.1  christos 	 complain_overflow_dont, /* complain_on_overflow */
     50      1.1  christos 	 bfd_elf_generic_reloc, /* special_function */
     51      1.1  christos 	 "R_390_NONE",		/* name */
     52      1.1  christos 	 FALSE,			/* partial_inplace */
     53      1.1  christos 	 0,			/* src_mask */
     54      1.1  christos 	 0,			/* dst_mask */
     55      1.1  christos 	 FALSE),		/* pcrel_offset */
     56      1.1  christos 
     57      1.1  christos   HOWTO(R_390_8,         0, 0,  8, FALSE, 0, complain_overflow_bitfield,
     58      1.1  christos 	bfd_elf_generic_reloc, "R_390_8",        FALSE, 0,0x000000ff, FALSE),
     59      1.1  christos   HOWTO(R_390_12,        0, 1, 12, FALSE, 0, complain_overflow_dont,
     60      1.1  christos 	bfd_elf_generic_reloc, "R_390_12",       FALSE, 0,0x00000fff, FALSE),
     61      1.1  christos   HOWTO(R_390_16,        0, 1, 16, FALSE, 0, complain_overflow_bitfield,
     62      1.1  christos 	bfd_elf_generic_reloc, "R_390_16",       FALSE, 0,0x0000ffff, FALSE),
     63      1.1  christos   HOWTO(R_390_32,        0, 2, 32, FALSE, 0, complain_overflow_bitfield,
     64      1.1  christos 	bfd_elf_generic_reloc, "R_390_32",       FALSE, 0,0xffffffff, FALSE),
     65      1.1  christos   HOWTO(R_390_PC32,	 0, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     66      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC32",     FALSE, 0,0xffffffff, TRUE),
     67      1.1  christos   HOWTO(R_390_GOT12,	 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
     68      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT12",    FALSE, 0,0x00000fff, FALSE),
     69      1.1  christos   HOWTO(R_390_GOT32,	 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
     70      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT32",    FALSE, 0,0xffffffff, FALSE),
     71      1.1  christos   HOWTO(R_390_PLT32,	 0, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     72      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT32",    FALSE, 0,0xffffffff, TRUE),
     73      1.1  christos   HOWTO(R_390_COPY,      0, 4, 64, FALSE, 0, complain_overflow_bitfield,
     74      1.1  christos 	bfd_elf_generic_reloc, "R_390_COPY",     FALSE, 0,MINUS_ONE,  FALSE),
     75      1.1  christos   HOWTO(R_390_GLOB_DAT,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
     76      1.1  christos 	bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE,  FALSE),
     77      1.1  christos   HOWTO(R_390_JMP_SLOT,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
     78      1.1  christos 	bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE,  FALSE),
     79      1.1  christos   HOWTO(R_390_RELATIVE,  0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
     80      1.1  christos 	bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE,  FALSE),
     81      1.1  christos   HOWTO(R_390_GOTOFF32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
     82      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE,  FALSE),
     83      1.1  christos   HOWTO(R_390_GOTPC,     0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
     84      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPC",    FALSE, 0,MINUS_ONE,  TRUE),
     85      1.1  christos   HOWTO(R_390_GOT16,     0, 1, 16, FALSE, 0, complain_overflow_bitfield,
     86      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT16",    FALSE, 0,0x0000ffff, FALSE),
     87      1.1  christos   HOWTO(R_390_PC16,      0, 1, 16,  TRUE, 0, complain_overflow_bitfield,
     88      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC16",     FALSE, 0,0x0000ffff, TRUE),
     89      1.1  christos   HOWTO(R_390_PC16DBL,   1, 1, 16,  TRUE, 0, complain_overflow_bitfield,
     90      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC16DBL",  FALSE, 0,0x0000ffff, TRUE),
     91      1.1  christos   HOWTO(R_390_PLT16DBL,  1, 1, 16,  TRUE, 0, complain_overflow_bitfield,
     92      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
     93      1.1  christos   HOWTO(R_390_PC32DBL,	 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     94      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC32DBL",  FALSE, 0,0xffffffff, TRUE),
     95      1.1  christos   HOWTO(R_390_PLT32DBL,	 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     96      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
     97      1.1  christos   HOWTO(R_390_GOTPCDBL,  1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
     98      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE,  TRUE),
     99      1.1  christos   HOWTO(R_390_64,        0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    100      1.1  christos 	bfd_elf_generic_reloc, "R_390_64",       FALSE, 0,MINUS_ONE,  FALSE),
    101      1.1  christos   HOWTO(R_390_PC64,	 0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
    102      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC64",     FALSE, 0,MINUS_ONE,  TRUE),
    103      1.1  christos   HOWTO(R_390_GOT64,	 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    104      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOT64",    FALSE, 0,MINUS_ONE,  FALSE),
    105      1.1  christos   HOWTO(R_390_PLT64,	 0, 4, 64,  TRUE, 0, complain_overflow_bitfield,
    106      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT64",    FALSE, 0,MINUS_ONE,  TRUE),
    107      1.1  christos   HOWTO(R_390_GOTENT,	 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
    108      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTENT",   FALSE, 0,MINUS_ONE,  TRUE),
    109      1.1  christos   HOWTO(R_390_GOTOFF16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
    110      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
    111      1.1  christos   HOWTO(R_390_GOTOFF64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    112      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE,  FALSE),
    113      1.1  christos   HOWTO(R_390_GOTPLT12,	 0, 1, 12, FALSE, 0, complain_overflow_dont,
    114      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
    115      1.1  christos   HOWTO(R_390_GOTPLT16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
    116      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
    117      1.1  christos   HOWTO(R_390_GOTPLT32,	 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
    118      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
    119      1.1  christos   HOWTO(R_390_GOTPLT64,	 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    120      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE,  FALSE),
    121      1.1  christos   HOWTO(R_390_GOTPLTENT, 1, 2, 32,  TRUE, 0, complain_overflow_bitfield,
    122      1.1  christos 	bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE,  TRUE),
    123      1.1  christos   HOWTO(R_390_PLTOFF16,  0, 1, 16, FALSE, 0, complain_overflow_bitfield,
    124      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
    125      1.1  christos   HOWTO(R_390_PLTOFF32,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
    126      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
    127      1.1  christos   HOWTO(R_390_PLTOFF64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    128      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE,  FALSE),
    129      1.1  christos   HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
    130      1.1  christos 	s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
    131      1.1  christos   HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
    132      1.1  christos 	s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
    133      1.1  christos   HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
    134      1.1  christos 	s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
    135      1.1  christos   EMPTY_HOWTO (R_390_TLS_GD32),	/* Empty entry for R_390_TLS_GD32.  */
    136      1.1  christos   HOWTO(R_390_TLS_GD64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    137      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
    138      1.1  christos   HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
    139      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
    140      1.1  christos   EMPTY_HOWTO (R_390_TLS_GOTIE32),	/* Empty entry for R_390_TLS_GOTIE32.  */
    141      1.1  christos   HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    142      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
    143      1.1  christos   EMPTY_HOWTO (R_390_TLS_LDM32),	/* Empty entry for R_390_TLS_LDM32.  */
    144      1.1  christos   HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    145      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
    146      1.1  christos   EMPTY_HOWTO (R_390_TLS_IE32),	/* Empty entry for R_390_TLS_IE32.  */
    147      1.1  christos   HOWTO(R_390_TLS_IE64,  0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    148      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
    149      1.1  christos   HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
    150      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
    151      1.1  christos   EMPTY_HOWTO (R_390_TLS_LE32),	/* Empty entry for R_390_TLS_LE32.  */
    152      1.1  christos   HOWTO(R_390_TLS_LE64,  0, 2, 32, FALSE, 0, complain_overflow_bitfield,
    153      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
    154      1.1  christos   EMPTY_HOWTO (R_390_TLS_LDO32),	/* Empty entry for R_390_TLS_LDO32.  */
    155      1.1  christos   HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    156      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
    157      1.1  christos   HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    158      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
    159      1.1  christos   HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    160      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
    161      1.1  christos   HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    162      1.1  christos 	bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
    163      1.1  christos   HOWTO(R_390_20,        0, 2, 20, FALSE, 8, complain_overflow_dont,
    164      1.1  christos 	s390_elf_ldisp_reloc, "R_390_20",      FALSE, 0,0x0fffff00, FALSE),
    165      1.1  christos   HOWTO(R_390_GOT20,	 0, 2, 20, FALSE, 8, complain_overflow_dont,
    166      1.1  christos 	s390_elf_ldisp_reloc, "R_390_GOT20",   FALSE, 0,0x0fffff00, FALSE),
    167      1.1  christos   HOWTO(R_390_GOTPLT20,  0, 2, 20, FALSE, 8, complain_overflow_dont,
    168      1.1  christos 	s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
    169      1.1  christos   HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
    170      1.1  christos 	s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
    171      1.1  christos   HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
    172      1.1  christos 	bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
    173      1.1  christos   HOWTO(R_390_PC12DBL,   1, 1, 12,  TRUE, 0, complain_overflow_bitfield,
    174      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC12DBL",  FALSE, 0,0x00000fff, TRUE),
    175      1.1  christos   HOWTO(R_390_PLT12DBL,  1, 1, 12,  TRUE, 0, complain_overflow_bitfield,
    176      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
    177      1.1  christos   HOWTO(R_390_PC24DBL,   1, 2, 24,  TRUE, 0, complain_overflow_bitfield,
    178      1.1  christos 	bfd_elf_generic_reloc, "R_390_PC24DBL",  FALSE, 0,0x00ffffff, TRUE),
    179      1.1  christos   HOWTO(R_390_PLT24DBL,  1, 2, 24,  TRUE, 0, complain_overflow_bitfield,
    180      1.1  christos 	bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
    181      1.1  christos };
    182      1.1  christos 
    183      1.1  christos /* GNU extension to record C++ vtable hierarchy.  */
    184      1.1  christos static reloc_howto_type elf64_s390_vtinherit_howto =
    185      1.1  christos   HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
    186      1.1  christos static reloc_howto_type elf64_s390_vtentry_howto =
    187      1.1  christos   HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
    188      1.1  christos 
    189      1.1  christos static reloc_howto_type *
    190      1.1  christos elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    191      1.1  christos 			    bfd_reloc_code_real_type code)
    192      1.1  christos {
    193      1.1  christos   switch (code)
    194      1.1  christos     {
    195      1.1  christos     case BFD_RELOC_NONE:
    196      1.1  christos       return &elf_howto_table[(int) R_390_NONE];
    197      1.1  christos     case BFD_RELOC_8:
    198      1.1  christos       return &elf_howto_table[(int) R_390_8];
    199      1.1  christos     case BFD_RELOC_390_12:
    200      1.1  christos       return &elf_howto_table[(int) R_390_12];
    201      1.1  christos     case BFD_RELOC_16:
    202      1.1  christos       return &elf_howto_table[(int) R_390_16];
    203      1.1  christos     case BFD_RELOC_32:
    204      1.1  christos       return &elf_howto_table[(int) R_390_32];
    205      1.1  christos     case BFD_RELOC_CTOR:
    206      1.1  christos       return &elf_howto_table[(int) R_390_32];
    207      1.1  christos     case BFD_RELOC_32_PCREL:
    208      1.1  christos       return &elf_howto_table[(int) R_390_PC32];
    209      1.1  christos     case BFD_RELOC_390_GOT12:
    210      1.1  christos       return &elf_howto_table[(int) R_390_GOT12];
    211      1.1  christos     case BFD_RELOC_32_GOT_PCREL:
    212      1.1  christos       return &elf_howto_table[(int) R_390_GOT32];
    213      1.1  christos     case BFD_RELOC_390_PLT32:
    214      1.1  christos       return &elf_howto_table[(int) R_390_PLT32];
    215      1.1  christos     case BFD_RELOC_390_COPY:
    216      1.1  christos       return &elf_howto_table[(int) R_390_COPY];
    217      1.1  christos     case BFD_RELOC_390_GLOB_DAT:
    218      1.1  christos       return &elf_howto_table[(int) R_390_GLOB_DAT];
    219      1.1  christos     case BFD_RELOC_390_JMP_SLOT:
    220      1.1  christos       return &elf_howto_table[(int) R_390_JMP_SLOT];
    221      1.1  christos     case BFD_RELOC_390_RELATIVE:
    222      1.1  christos       return &elf_howto_table[(int) R_390_RELATIVE];
    223      1.1  christos     case BFD_RELOC_32_GOTOFF:
    224      1.1  christos       return &elf_howto_table[(int) R_390_GOTOFF32];
    225      1.1  christos     case BFD_RELOC_390_GOTPC:
    226      1.1  christos       return &elf_howto_table[(int) R_390_GOTPC];
    227      1.1  christos     case BFD_RELOC_390_GOT16:
    228      1.1  christos       return &elf_howto_table[(int) R_390_GOT16];
    229      1.1  christos     case BFD_RELOC_16_PCREL:
    230      1.1  christos       return &elf_howto_table[(int) R_390_PC16];
    231      1.1  christos     case BFD_RELOC_390_PC12DBL:
    232      1.1  christos       return &elf_howto_table[(int) R_390_PC12DBL];
    233      1.1  christos     case BFD_RELOC_390_PLT12DBL:
    234      1.1  christos       return &elf_howto_table[(int) R_390_PLT12DBL];
    235      1.1  christos     case BFD_RELOC_390_PC16DBL:
    236      1.1  christos       return &elf_howto_table[(int) R_390_PC16DBL];
    237      1.1  christos     case BFD_RELOC_390_PLT16DBL:
    238      1.1  christos       return &elf_howto_table[(int) R_390_PLT16DBL];
    239      1.1  christos     case BFD_RELOC_390_PC24DBL:
    240      1.1  christos       return &elf_howto_table[(int) R_390_PC24DBL];
    241      1.1  christos     case BFD_RELOC_390_PLT24DBL:
    242      1.1  christos       return &elf_howto_table[(int) R_390_PLT24DBL];
    243      1.1  christos     case BFD_RELOC_390_PC32DBL:
    244      1.1  christos       return &elf_howto_table[(int) R_390_PC32DBL];
    245      1.1  christos     case BFD_RELOC_390_PLT32DBL:
    246      1.1  christos       return &elf_howto_table[(int) R_390_PLT32DBL];
    247      1.1  christos     case BFD_RELOC_390_GOTPCDBL:
    248      1.1  christos       return &elf_howto_table[(int) R_390_GOTPCDBL];
    249      1.1  christos     case BFD_RELOC_64:
    250      1.1  christos       return &elf_howto_table[(int) R_390_64];
    251      1.1  christos     case BFD_RELOC_64_PCREL:
    252      1.1  christos       return &elf_howto_table[(int) R_390_PC64];
    253      1.1  christos     case BFD_RELOC_390_GOT64:
    254      1.1  christos       return &elf_howto_table[(int) R_390_GOT64];
    255      1.1  christos     case BFD_RELOC_390_PLT64:
    256      1.1  christos       return &elf_howto_table[(int) R_390_PLT64];
    257      1.1  christos     case BFD_RELOC_390_GOTENT:
    258      1.1  christos       return &elf_howto_table[(int) R_390_GOTENT];
    259      1.1  christos     case BFD_RELOC_16_GOTOFF:
    260      1.1  christos       return &elf_howto_table[(int) R_390_GOTOFF16];
    261      1.1  christos     case BFD_RELOC_390_GOTOFF64:
    262      1.1  christos       return &elf_howto_table[(int) R_390_GOTOFF64];
    263      1.1  christos     case BFD_RELOC_390_GOTPLT12:
    264      1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT12];
    265      1.1  christos     case BFD_RELOC_390_GOTPLT16:
    266      1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT16];
    267      1.1  christos     case BFD_RELOC_390_GOTPLT32:
    268      1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT32];
    269      1.1  christos     case BFD_RELOC_390_GOTPLT64:
    270      1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT64];
    271      1.1  christos     case BFD_RELOC_390_GOTPLTENT:
    272      1.1  christos       return &elf_howto_table[(int) R_390_GOTPLTENT];
    273      1.1  christos     case BFD_RELOC_390_PLTOFF16:
    274      1.1  christos       return &elf_howto_table[(int) R_390_PLTOFF16];
    275      1.1  christos     case BFD_RELOC_390_PLTOFF32:
    276      1.1  christos       return &elf_howto_table[(int) R_390_PLTOFF32];
    277      1.1  christos     case BFD_RELOC_390_PLTOFF64:
    278      1.1  christos       return &elf_howto_table[(int) R_390_PLTOFF64];
    279      1.1  christos     case BFD_RELOC_390_TLS_LOAD:
    280      1.1  christos       return &elf_howto_table[(int) R_390_TLS_LOAD];
    281      1.1  christos     case BFD_RELOC_390_TLS_GDCALL:
    282      1.1  christos       return &elf_howto_table[(int) R_390_TLS_GDCALL];
    283      1.1  christos     case BFD_RELOC_390_TLS_LDCALL:
    284      1.1  christos       return &elf_howto_table[(int) R_390_TLS_LDCALL];
    285      1.1  christos     case BFD_RELOC_390_TLS_GD64:
    286      1.1  christos       return &elf_howto_table[(int) R_390_TLS_GD64];
    287      1.1  christos     case BFD_RELOC_390_TLS_GOTIE12:
    288      1.1  christos       return &elf_howto_table[(int) R_390_TLS_GOTIE12];
    289      1.1  christos     case BFD_RELOC_390_TLS_GOTIE64:
    290      1.1  christos       return &elf_howto_table[(int) R_390_TLS_GOTIE64];
    291      1.1  christos     case BFD_RELOC_390_TLS_LDM64:
    292      1.1  christos       return &elf_howto_table[(int) R_390_TLS_LDM64];
    293      1.1  christos     case BFD_RELOC_390_TLS_IE64:
    294      1.1  christos       return &elf_howto_table[(int) R_390_TLS_IE64];
    295      1.1  christos     case BFD_RELOC_390_TLS_IEENT:
    296      1.1  christos       return &elf_howto_table[(int) R_390_TLS_IEENT];
    297      1.1  christos     case BFD_RELOC_390_TLS_LE64:
    298      1.1  christos       return &elf_howto_table[(int) R_390_TLS_LE64];
    299      1.1  christos     case BFD_RELOC_390_TLS_LDO64:
    300      1.1  christos       return &elf_howto_table[(int) R_390_TLS_LDO64];
    301      1.1  christos     case BFD_RELOC_390_TLS_DTPMOD:
    302      1.1  christos       return &elf_howto_table[(int) R_390_TLS_DTPMOD];
    303      1.1  christos     case BFD_RELOC_390_TLS_DTPOFF:
    304      1.1  christos       return &elf_howto_table[(int) R_390_TLS_DTPOFF];
    305      1.1  christos     case BFD_RELOC_390_TLS_TPOFF:
    306      1.1  christos       return &elf_howto_table[(int) R_390_TLS_TPOFF];
    307      1.1  christos     case BFD_RELOC_390_20:
    308      1.1  christos       return &elf_howto_table[(int) R_390_20];
    309      1.1  christos     case BFD_RELOC_390_GOT20:
    310      1.1  christos       return &elf_howto_table[(int) R_390_GOT20];
    311      1.1  christos     case BFD_RELOC_390_GOTPLT20:
    312      1.1  christos       return &elf_howto_table[(int) R_390_GOTPLT20];
    313      1.1  christos     case BFD_RELOC_390_TLS_GOTIE20:
    314      1.1  christos       return &elf_howto_table[(int) R_390_TLS_GOTIE20];
    315      1.1  christos     case BFD_RELOC_390_IRELATIVE:
    316      1.1  christos       return &elf_howto_table[(int) R_390_IRELATIVE];
    317      1.1  christos     case BFD_RELOC_VTABLE_INHERIT:
    318      1.1  christos       return &elf64_s390_vtinherit_howto;
    319      1.1  christos     case BFD_RELOC_VTABLE_ENTRY:
    320      1.1  christos       return &elf64_s390_vtentry_howto;
    321      1.1  christos     default:
    322      1.1  christos       break;
    323      1.1  christos     }
    324      1.1  christos   return 0;
    325      1.1  christos }
    326      1.1  christos 
    327      1.1  christos static reloc_howto_type *
    328      1.1  christos elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
    329      1.1  christos 			    const char *r_name)
    330      1.1  christos {
    331      1.1  christos   unsigned int i;
    332      1.1  christos 
    333      1.1  christos   for (i = 0;
    334      1.1  christos        i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
    335      1.1  christos        i++)
    336      1.1  christos     if (elf_howto_table[i].name != NULL
    337      1.1  christos 	&& strcasecmp (elf_howto_table[i].name, r_name) == 0)
    338      1.1  christos       return &elf_howto_table[i];
    339      1.1  christos 
    340      1.1  christos     if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
    341      1.1  christos       return &elf64_s390_vtinherit_howto;
    342      1.1  christos     if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
    343      1.1  christos       return &elf64_s390_vtentry_howto;
    344      1.1  christos 
    345      1.1  christos   return NULL;
    346      1.1  christos }
    347      1.1  christos 
    348      1.1  christos /* We need to use ELF64_R_TYPE so we have our own copy of this function,
    349      1.1  christos    and elf64-s390.c has its own copy.  */
    350      1.1  christos 
    351      1.1  christos static void
    352      1.1  christos elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
    353      1.1  christos 			arelent *cache_ptr,
    354      1.1  christos 			Elf_Internal_Rela *dst)
    355      1.1  christos {
    356      1.1  christos   unsigned int r_type = ELF64_R_TYPE(dst->r_info);
    357      1.1  christos   switch (r_type)
    358      1.1  christos     {
    359      1.1  christos     case R_390_GNU_VTINHERIT:
    360      1.1  christos       cache_ptr->howto = &elf64_s390_vtinherit_howto;
    361      1.1  christos       break;
    362      1.1  christos 
    363      1.1  christos     case R_390_GNU_VTENTRY:
    364      1.1  christos       cache_ptr->howto = &elf64_s390_vtentry_howto;
    365      1.1  christos       break;
    366      1.1  christos 
    367      1.1  christos     default:
    368      1.1  christos       if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
    369      1.1  christos 	{
    370      1.1  christos 	  (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
    371      1.1  christos 				 abfd, (int) r_type);
    372      1.1  christos 	  r_type = R_390_NONE;
    373      1.1  christos 	}
    374      1.1  christos       cache_ptr->howto = &elf_howto_table[r_type];
    375      1.1  christos     }
    376      1.1  christos }
    377      1.1  christos 
    378      1.1  christos /* A relocation function which doesn't do anything.  */
    379      1.1  christos static bfd_reloc_status_type
    380      1.1  christos s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
    381      1.1  christos 		arelent *reloc_entry,
    382      1.1  christos 		asymbol *symbol ATTRIBUTE_UNUSED,
    383      1.1  christos 		void * data ATTRIBUTE_UNUSED,
    384      1.1  christos 		asection *input_section,
    385      1.1  christos 		bfd *output_bfd,
    386      1.1  christos 		char **error_message ATTRIBUTE_UNUSED)
    387      1.1  christos {
    388      1.1  christos   if (output_bfd)
    389      1.1  christos     reloc_entry->address += input_section->output_offset;
    390      1.1  christos   return bfd_reloc_ok;
    391      1.1  christos }
    392      1.1  christos 
    393      1.1  christos /* Handle the large displacement relocs.  */
    394      1.1  christos static bfd_reloc_status_type
    395      1.1  christos s390_elf_ldisp_reloc (bfd *abfd,
    396      1.1  christos 		      arelent *reloc_entry,
    397      1.1  christos 		      asymbol *symbol,
    398      1.1  christos 		      void * data,
    399      1.1  christos 		      asection *input_section,
    400      1.1  christos 		      bfd *output_bfd,
    401      1.1  christos 		      char **error_message ATTRIBUTE_UNUSED)
    402      1.1  christos {
    403      1.1  christos   reloc_howto_type *howto = reloc_entry->howto;
    404      1.1  christos   bfd_vma relocation;
    405      1.1  christos   bfd_vma insn;
    406      1.1  christos 
    407      1.1  christos   if (output_bfd != (bfd *) NULL
    408      1.1  christos       && (symbol->flags & BSF_SECTION_SYM) == 0
    409      1.1  christos       && (! howto->partial_inplace
    410      1.1  christos 	  || reloc_entry->addend == 0))
    411      1.1  christos     {
    412      1.1  christos       reloc_entry->address += input_section->output_offset;
    413      1.1  christos       return bfd_reloc_ok;
    414      1.1  christos     }
    415      1.1  christos   if (output_bfd != NULL)
    416      1.1  christos     return bfd_reloc_continue;
    417      1.1  christos 
    418      1.1  christos   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
    419      1.1  christos     return bfd_reloc_outofrange;
    420      1.1  christos 
    421      1.1  christos   relocation = (symbol->value
    422      1.1  christos 		+ symbol->section->output_section->vma
    423      1.1  christos 		+ symbol->section->output_offset);
    424      1.1  christos   relocation += reloc_entry->addend;
    425      1.1  christos   if (howto->pc_relative)
    426      1.1  christos     {
    427      1.1  christos       relocation -= (input_section->output_section->vma
    428      1.1  christos 		     + input_section->output_offset);
    429      1.1  christos       relocation -= reloc_entry->address;
    430      1.1  christos     }
    431      1.1  christos 
    432      1.1  christos   insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
    433      1.1  christos   insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
    434      1.1  christos   bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
    435      1.1  christos 
    436      1.1  christos   if ((bfd_signed_vma) relocation < - 0x80000
    437      1.1  christos       || (bfd_signed_vma) relocation > 0x7ffff)
    438      1.1  christos     return bfd_reloc_overflow;
    439      1.1  christos   else
    440      1.1  christos     return bfd_reloc_ok;
    441      1.1  christos }
    442      1.1  christos 
    443      1.1  christos static bfd_boolean
    444      1.1  christos elf_s390_is_local_label_name (bfd *abfd, const char *name)
    445      1.1  christos {
    446      1.1  christos   if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
    447      1.1  christos     return TRUE;
    448      1.1  christos 
    449      1.1  christos   return _bfd_elf_is_local_label_name (abfd, name);
    450      1.1  christos }
    451      1.1  christos 
    452      1.1  christos /* Functions for the 390 ELF linker.  */
    453      1.1  christos 
    454      1.1  christos /* The name of the dynamic interpreter.  This is put in the .interp
    455      1.1  christos    section.  */
    456      1.1  christos 
    457      1.1  christos #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
    458      1.1  christos 
    459      1.1  christos /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
    460      1.1  christos    copying dynamic variables from a shared lib into an app's dynbss
    461      1.1  christos    section, and instead use a dynamic relocation to point into the
    462      1.1  christos    shared lib.  */
    463      1.1  christos #define ELIMINATE_COPY_RELOCS 1
    464      1.1  christos 
    465      1.1  christos /* The size in bytes of the first entry in the procedure linkage table.  */
    466      1.1  christos #define PLT_FIRST_ENTRY_SIZE 32
    467      1.1  christos /* The size in bytes of an entry in the procedure linkage table.  */
    468      1.1  christos #define PLT_ENTRY_SIZE 32
    469      1.1  christos 
    470      1.1  christos #define GOT_ENTRY_SIZE 8
    471      1.1  christos 
    472      1.1  christos #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
    473      1.1  christos 
    474      1.1  christos /* The first three entries in a procedure linkage table are reserved,
    475      1.1  christos    and the initial contents are unimportant (we zero them out).
    476      1.1  christos    Subsequent entries look like this.  See the SVR4 ABI 386
    477      1.1  christos    supplement to see how this works.  */
    478      1.1  christos 
    479      1.1  christos /* For the s390, simple addr offset can only be 0 - 4096.
    480      1.1  christos    To use the full 16777216 TB address space, several instructions
    481      1.1  christos    are needed to load an address in a register and execute
    482      1.1  christos    a branch( or just saving the address)
    483      1.1  christos 
    484      1.1  christos    Furthermore, only r 0 and 1 are free to use!!!  */
    485      1.1  christos 
    486      1.1  christos /* The first 3 words in the GOT are then reserved.
    487      1.1  christos    Word 0 is the address of the dynamic table.
    488      1.1  christos    Word 1 is a pointer to a structure describing the object
    489      1.1  christos    Word 2 is used to point to the loader entry address.
    490      1.1  christos 
    491      1.1  christos    The code for PLT entries looks like this:
    492      1.1  christos 
    493      1.1  christos    The GOT holds the address in the PLT to be executed.
    494      1.1  christos    The loader then gets:
    495      1.1  christos    24(15) =  Pointer to the structure describing the object.
    496      1.1  christos    28(15) =  Offset in symbol table
    497      1.1  christos    The loader  must  then find the module where the function is
    498      1.1  christos    and insert the address in the GOT.
    499      1.1  christos 
    500      1.1  christos    PLT1: LARL 1,<fn>@GOTENT # 6 bytes  Load address of GOT entry in r1
    501      1.1  christos          LG   1,0(1)      # 6 bytes  Load address from GOT in r1
    502      1.1  christos          BCR  15,1        # 2 bytes  Jump to address
    503      1.1  christos    RET1: BASR 1,0         # 2 bytes  Return from GOT 1st time
    504      1.1  christos          LGF  1,12(1)     # 6 bytes  Load offset in symbl table in r1
    505      1.1  christos          BRCL 15,-x       # 6 bytes  Jump to start of PLT
    506      1.1  christos          .long ?          # 4 bytes  offset into .rela.plt
    507      1.1  christos 
    508      1.1  christos    Total = 32 bytes per PLT entry
    509      1.1  christos    Fixup at offset 2: relative address to GOT entry
    510      1.1  christos    Fixup at offset 22: relative branch to PLT0
    511      1.1  christos    Fixup at offset 28: 32 bit offset into .rela.plt
    512      1.1  christos 
    513      1.1  christos    A 32 bit offset into the symbol table is enough. It allows for
    514      1.1  christos    .rela.plt sections up to a size of 2 gigabyte.  A single dynamic
    515      1.1  christos    object (the main program, any shared library) is limited to 4GB in
    516      1.1  christos    size.  Having a .rela.plt of 2GB would already make the .plt
    517      1.1  christos    section bigger than 8GB.  */
    518      1.1  christos 
    519      1.1  christos static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
    520      1.1  christos   {
    521      1.1  christos     0xc0, 0x10, 0x00, 0x00, 0x00, 0x00,     /* larl    %r1,.       */
    522      1.1  christos     0xe3, 0x10, 0x10, 0x00, 0x00, 0x04,     /* lg      %r1,0(%r1)  */
    523      1.1  christos     0x07, 0xf1,                             /* br      %r1         */
    524      1.1  christos     0x0d, 0x10,                             /* basr    %r1,%r0     */
    525      1.1  christos     0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14,     /* lgf     %r1,12(%r1) */
    526      1.1  christos     0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00,     /* jg      first plt   */
    527      1.1  christos     0x00, 0x00, 0x00, 0x00                  /* .long   0x00000000  */
    528      1.1  christos   };
    529      1.1  christos 
    530      1.1  christos /* The first PLT entry pushes the offset into the symbol table
    531      1.1  christos    from R1 onto the stack at 56(15) and the loader object info
    532      1.1  christos    at 48(15), loads the loader address in R1 and jumps to it.  */
    533      1.1  christos 
    534      1.1  christos /* The first entry in the PLT:
    535      1.1  christos 
    536      1.1  christos   PLT0:
    537      1.1  christos      STG  1,56(15)  # r1 contains the offset into the symbol table
    538      1.1  christos      LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
    539      1.1  christos      MVC  48(8,15),8(1) # move loader ino (object struct address) to stack
    540      1.1  christos      LG   1,16(1)   # get entry address of loader
    541      1.1  christos      BCR  15,1      # jump to loader
    542      1.1  christos 
    543      1.1  christos      Fixup at offset 8: relative address to start of GOT.  */
    544      1.1  christos 
    545      1.1  christos static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
    546      1.1  christos   {
    547      1.1  christos     0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24,     /* stg     %r1,56(%r15)      */
    548      1.1  christos     0xc0, 0x10, 0x00, 0x00, 0x00, 0x00,     /* larl    %r1,.             */
    549      1.1  christos     0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08,     /* mvc     48(8,%r15),8(%r1) */
    550      1.1  christos     0xe3, 0x10, 0x10, 0x10, 0x00, 0x04,     /* lg      %r1,16(%r1)       */
    551      1.1  christos     0x07, 0xf1,                             /* br      %r1               */
    552      1.1  christos     0x07, 0x00,                             /* nopr    %r0               */
    553      1.1  christos     0x07, 0x00,                             /* nopr    %r0               */
    554      1.1  christos     0x07, 0x00                              /* nopr    %r0               */
    555      1.1  christos   };
    556      1.1  christos 
    557      1.1  christos 
    558      1.1  christos /* s390 ELF linker hash entry.  */
    559      1.1  christos 
    560      1.1  christos struct elf_s390_link_hash_entry
    561      1.1  christos {
    562      1.1  christos   struct elf_link_hash_entry elf;
    563      1.1  christos 
    564      1.1  christos   /* Track dynamic relocs copied for this symbol.  */
    565      1.1  christos   struct elf_dyn_relocs *dyn_relocs;
    566      1.1  christos 
    567      1.1  christos   /* Number of GOTPLT references for a function.  */
    568      1.1  christos   bfd_signed_vma gotplt_refcount;
    569      1.1  christos 
    570      1.1  christos #define GOT_UNKNOWN	0
    571      1.1  christos #define GOT_NORMAL	1
    572      1.1  christos #define GOT_TLS_GD	2
    573      1.1  christos #define GOT_TLS_IE	3
    574      1.1  christos #define GOT_TLS_IE_NLT	3
    575      1.1  christos   unsigned char tls_type;
    576      1.1  christos 
    577      1.1  christos   /* For pointer equality reasons we might need to change the symbol
    578      1.1  christos      type from STT_GNU_IFUNC to STT_FUNC together with its value and
    579      1.1  christos      section entry.  So after alloc_dynrelocs only these values should
    580      1.1  christos      be used.  In order to check whether a symbol is IFUNC use
    581      1.1  christos      s390_is_ifunc_symbol_p.  */
    582      1.1  christos   bfd_vma ifunc_resolver_address;
    583      1.1  christos   asection *ifunc_resolver_section;
    584      1.1  christos };
    585      1.1  christos 
    586      1.1  christos #define elf_s390_hash_entry(ent) \
    587      1.1  christos   ((struct elf_s390_link_hash_entry *)(ent))
    588      1.1  christos 
    589      1.1  christos /* This structure represents an entry in the local PLT list needed for
    590      1.1  christos    local IFUNC symbols.  */
    591      1.1  christos struct plt_entry
    592      1.1  christos {
    593      1.1  christos   /* The section of the local symbol.
    594      1.1  christos      Set in relocate_section and used in finish_dynamic_sections.  */
    595      1.1  christos   asection *sec;
    596      1.1  christos 
    597      1.1  christos   union
    598      1.1  christos     {
    599      1.1  christos       bfd_signed_vma refcount;
    600      1.1  christos       bfd_vma offset;
    601      1.1  christos     } plt;
    602      1.1  christos };
    603      1.1  christos 
    604      1.1  christos /* NOTE: Keep this structure in sync with
    605      1.1  christos    the one declared in elf32-s390.c.  */
    606      1.1  christos struct elf_s390_obj_tdata
    607      1.1  christos {
    608      1.1  christos   struct elf_obj_tdata root;
    609      1.1  christos 
    610      1.1  christos   /* A local PLT is needed for ifunc symbols.  */
    611      1.1  christos   struct plt_entry *local_plt;
    612      1.1  christos 
    613      1.1  christos   /* TLS type for each local got entry.  */
    614      1.1  christos   char *local_got_tls_type;
    615      1.1  christos };
    616      1.1  christos 
    617      1.1  christos #define elf_s390_tdata(abfd) \
    618      1.1  christos   ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
    619      1.1  christos 
    620      1.1  christos #define elf_s390_local_plt(abfd) \
    621      1.1  christos   (elf_s390_tdata (abfd)->local_plt)
    622      1.1  christos 
    623      1.1  christos #define elf_s390_local_got_tls_type(abfd) \
    624      1.1  christos   (elf_s390_tdata (abfd)->local_got_tls_type)
    625      1.1  christos 
    626      1.1  christos #define is_s390_elf(bfd)				\
    627      1.1  christos   (bfd_get_flavour (bfd) == bfd_target_elf_flavour	\
    628      1.1  christos    && elf_tdata (bfd) != NULL				\
    629      1.1  christos    && elf_object_id (bfd) == S390_ELF_DATA)
    630      1.1  christos 
    631      1.1  christos static bfd_boolean
    632      1.1  christos elf_s390_mkobject (bfd *abfd)
    633      1.1  christos {
    634      1.1  christos   return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
    635      1.1  christos 				  S390_ELF_DATA);
    636      1.1  christos }
    637      1.1  christos 
    638      1.1  christos static bfd_boolean
    639      1.1  christos elf_s390_object_p (bfd *abfd)
    640      1.1  christos {
    641      1.1  christos   /* Set the right machine number for an s390 elf32 file.  */
    642      1.1  christos   return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
    643      1.1  christos }
    644      1.1  christos 
    645      1.1  christos /* s390 ELF linker hash table.  */
    646      1.1  christos 
    647      1.1  christos struct elf_s390_link_hash_table
    648      1.1  christos {
    649      1.1  christos   struct elf_link_hash_table elf;
    650      1.1  christos 
    651      1.1  christos   /* Short-cuts to get to dynamic linker sections.  */
    652      1.1  christos   asection *sdynbss;
    653      1.1  christos   asection *srelbss;
    654      1.1  christos   asection *irelifunc;
    655      1.1  christos 
    656      1.1  christos   union {
    657      1.1  christos     bfd_signed_vma refcount;
    658      1.1  christos     bfd_vma offset;
    659      1.1  christos   } tls_ldm_got;
    660      1.1  christos 
    661      1.1  christos   /* Small local sym cache.  */
    662      1.1  christos   struct sym_cache sym_cache;
    663      1.1  christos };
    664      1.1  christos 
    665      1.1  christos /* Get the s390 ELF linker hash table from a link_info structure.  */
    666      1.1  christos 
    667      1.1  christos #define elf_s390_hash_table(p) \
    668      1.1  christos   (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
    669      1.1  christos   == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
    670      1.1  christos 
    671      1.1  christos #define ELF64 1
    672      1.1  christos #include "elf-s390-common.c"
    673      1.1  christos 
    674      1.1  christos /* Create an entry in an s390 ELF linker hash table.  */
    675      1.1  christos 
    676      1.1  christos static struct bfd_hash_entry *
    677      1.1  christos link_hash_newfunc (struct bfd_hash_entry *entry,
    678      1.1  christos 		   struct bfd_hash_table *table,
    679      1.1  christos 		   const char *string)
    680      1.1  christos {
    681      1.1  christos   /* Allocate the structure if it has not already been allocated by a
    682      1.1  christos      subclass.  */
    683      1.1  christos   if (entry == NULL)
    684      1.1  christos     {
    685      1.1  christos       entry = bfd_hash_allocate (table,
    686      1.1  christos 				 sizeof (struct elf_s390_link_hash_entry));
    687      1.1  christos       if (entry == NULL)
    688      1.1  christos 	return entry;
    689      1.1  christos     }
    690      1.1  christos 
    691      1.1  christos   /* Call the allocation method of the superclass.  */
    692      1.1  christos   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
    693      1.1  christos   if (entry != NULL)
    694      1.1  christos     {
    695      1.1  christos       struct elf_s390_link_hash_entry *eh;
    696      1.1  christos 
    697      1.1  christos       eh = (struct elf_s390_link_hash_entry *) entry;
    698      1.1  christos       eh->dyn_relocs = NULL;
    699      1.1  christos       eh->gotplt_refcount = 0;
    700      1.1  christos       eh->tls_type = GOT_UNKNOWN;
    701      1.1  christos       eh->ifunc_resolver_address = 0;
    702      1.1  christos       eh->ifunc_resolver_section = NULL;
    703      1.1  christos     }
    704      1.1  christos 
    705      1.1  christos   return entry;
    706      1.1  christos }
    707      1.1  christos 
    708      1.1  christos /* Create an s390 ELF linker hash table.  */
    709      1.1  christos 
    710      1.1  christos static struct bfd_link_hash_table *
    711      1.1  christos elf_s390_link_hash_table_create (bfd *abfd)
    712      1.1  christos {
    713      1.1  christos   struct elf_s390_link_hash_table *ret;
    714      1.1  christos   bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
    715      1.1  christos 
    716      1.1  christos   ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
    717      1.1  christos   if (ret == NULL)
    718      1.1  christos     return NULL;
    719      1.1  christos 
    720      1.1  christos   if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
    721      1.1  christos 				      sizeof (struct elf_s390_link_hash_entry),
    722      1.1  christos 				      S390_ELF_DATA))
    723      1.1  christos     {
    724      1.1  christos       free (ret);
    725      1.1  christos       return NULL;
    726      1.1  christos     }
    727      1.1  christos 
    728      1.1  christos   return &ret->elf.root;
    729      1.1  christos }
    730      1.1  christos 
    731      1.1  christos /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
    732      1.1  christos    shortcuts to them in our hash table.  */
    733      1.1  christos 
    734      1.1  christos static bfd_boolean
    735      1.1  christos create_got_section (bfd *dynobj,
    736      1.1  christos 		    struct bfd_link_info *info)
    737      1.1  christos {
    738      1.1  christos   struct elf_s390_link_hash_table *htab;
    739      1.1  christos 
    740      1.1  christos   if (! _bfd_elf_create_got_section (dynobj, info))
    741      1.1  christos     return FALSE;
    742      1.1  christos 
    743      1.1  christos   htab = elf_s390_hash_table (info);
    744      1.1  christos   if (htab == NULL)
    745      1.1  christos     return FALSE;
    746      1.1  christos 
    747      1.1  christos   htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
    748      1.1  christos   htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
    749      1.1  christos   htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
    750      1.1  christos   if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
    751      1.1  christos     abort ();
    752      1.1  christos   return TRUE;
    753      1.1  christos }
    754      1.1  christos 
    755      1.1  christos /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
    756      1.1  christos    .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
    757      1.1  christos    hash table.  */
    758      1.1  christos 
    759      1.1  christos static bfd_boolean
    760      1.1  christos elf_s390_create_dynamic_sections (bfd *dynobj,
    761      1.1  christos 				  struct bfd_link_info *info)
    762      1.1  christos {
    763      1.1  christos   struct elf_s390_link_hash_table *htab;
    764      1.1  christos 
    765      1.1  christos   htab = elf_s390_hash_table (info);
    766      1.1  christos   if (htab == NULL)
    767      1.1  christos     return FALSE;
    768      1.1  christos 
    769      1.1  christos   if (!htab->elf.sgot && !create_got_section (dynobj, info))
    770      1.1  christos     return FALSE;
    771      1.1  christos 
    772      1.1  christos   if (!_bfd_elf_create_dynamic_sections (dynobj, info))
    773      1.1  christos     return FALSE;
    774      1.1  christos 
    775      1.1  christos   htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
    776      1.1  christos   htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
    777      1.1  christos   htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
    778      1.1  christos   if (!info->shared)
    779      1.1  christos     htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
    780      1.1  christos 
    781      1.1  christos   if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
    782      1.1  christos       || (!info->shared && !htab->srelbss))
    783      1.1  christos     abort ();
    784      1.1  christos 
    785      1.1  christos   return TRUE;
    786      1.1  christos }
    787      1.1  christos 
    788      1.1  christos /* Copy the extra info we tack onto an elf_link_hash_entry.  */
    789      1.1  christos 
    790      1.1  christos static void
    791      1.1  christos elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
    792      1.1  christos 			       struct elf_link_hash_entry *dir,
    793      1.1  christos 			       struct elf_link_hash_entry *ind)
    794      1.1  christos {
    795      1.1  christos   struct elf_s390_link_hash_entry *edir, *eind;
    796      1.1  christos 
    797      1.1  christos   edir = (struct elf_s390_link_hash_entry *) dir;
    798      1.1  christos   eind = (struct elf_s390_link_hash_entry *) ind;
    799      1.1  christos 
    800      1.1  christos   if (eind->dyn_relocs != NULL)
    801      1.1  christos     {
    802      1.1  christos       if (edir->dyn_relocs != NULL)
    803      1.1  christos 	{
    804      1.1  christos 	  struct elf_dyn_relocs **pp;
    805      1.1  christos 	  struct elf_dyn_relocs *p;
    806      1.1  christos 
    807      1.1  christos 	  /* Add reloc counts against the indirect sym to the direct sym
    808      1.1  christos 	     list.  Merge any entries against the same section.  */
    809      1.1  christos 	  for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
    810      1.1  christos 	    {
    811      1.1  christos 	      struct elf_dyn_relocs *q;
    812      1.1  christos 
    813      1.1  christos 	      for (q = edir->dyn_relocs; q != NULL; q = q->next)
    814      1.1  christos 		if (q->sec == p->sec)
    815      1.1  christos 		  {
    816      1.1  christos 		    q->pc_count += p->pc_count;
    817      1.1  christos 		    q->count += p->count;
    818      1.1  christos 		    *pp = p->next;
    819      1.1  christos 		    break;
    820      1.1  christos 		  }
    821      1.1  christos 	      if (q == NULL)
    822      1.1  christos 		pp = &p->next;
    823      1.1  christos 	    }
    824      1.1  christos 	  *pp = edir->dyn_relocs;
    825      1.1  christos 	}
    826      1.1  christos 
    827      1.1  christos       edir->dyn_relocs = eind->dyn_relocs;
    828      1.1  christos       eind->dyn_relocs = NULL;
    829      1.1  christos     }
    830      1.1  christos 
    831      1.1  christos   if (ind->root.type == bfd_link_hash_indirect
    832      1.1  christos       && dir->got.refcount <= 0)
    833      1.1  christos     {
    834      1.1  christos       edir->tls_type = eind->tls_type;
    835      1.1  christos       eind->tls_type = GOT_UNKNOWN;
    836      1.1  christos     }
    837      1.1  christos 
    838      1.1  christos   if (ELIMINATE_COPY_RELOCS
    839      1.1  christos       && ind->root.type != bfd_link_hash_indirect
    840      1.1  christos       && dir->dynamic_adjusted)
    841      1.1  christos     {
    842      1.1  christos       /* If called to transfer flags for a weakdef during processing
    843      1.1  christos 	 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
    844      1.1  christos 	 We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
    845      1.1  christos       dir->ref_dynamic |= ind->ref_dynamic;
    846      1.1  christos       dir->ref_regular |= ind->ref_regular;
    847      1.1  christos       dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
    848      1.1  christos       dir->needs_plt |= ind->needs_plt;
    849      1.1  christos     }
    850      1.1  christos   else
    851      1.1  christos     _bfd_elf_link_hash_copy_indirect (info, dir, ind);
    852      1.1  christos }
    853      1.1  christos 
    854      1.1  christos static int
    855      1.1  christos elf_s390_tls_transition (struct bfd_link_info *info,
    856      1.1  christos 			 int r_type,
    857      1.1  christos 			 int is_local)
    858      1.1  christos {
    859      1.1  christos   if (info->shared)
    860      1.1  christos     return r_type;
    861      1.1  christos 
    862      1.1  christos   switch (r_type)
    863      1.1  christos     {
    864      1.1  christos     case R_390_TLS_GD64:
    865      1.1  christos     case R_390_TLS_IE64:
    866      1.1  christos       if (is_local)
    867      1.1  christos 	return R_390_TLS_LE64;
    868      1.1  christos       return R_390_TLS_IE64;
    869      1.1  christos     case R_390_TLS_GOTIE64:
    870      1.1  christos       if (is_local)
    871      1.1  christos 	return R_390_TLS_LE64;
    872      1.1  christos       return R_390_TLS_GOTIE64;
    873      1.1  christos     case R_390_TLS_LDM64:
    874      1.1  christos       return R_390_TLS_LE64;
    875      1.1  christos     }
    876      1.1  christos 
    877      1.1  christos   return r_type;
    878      1.1  christos }
    879      1.1  christos 
    880      1.1  christos /* Look through the relocs for a section during the first phase, and
    881      1.1  christos    allocate space in the global offset table or procedure linkage
    882      1.1  christos    table.  */
    883      1.1  christos 
    884      1.1  christos static bfd_boolean
    885      1.1  christos elf_s390_check_relocs (bfd *abfd,
    886      1.1  christos 		       struct bfd_link_info *info,
    887      1.1  christos 		       asection *sec,
    888      1.1  christos 		       const Elf_Internal_Rela *relocs)
    889      1.1  christos {
    890      1.1  christos   struct elf_s390_link_hash_table *htab;
    891      1.1  christos   Elf_Internal_Shdr *symtab_hdr;
    892      1.1  christos   struct elf_link_hash_entry **sym_hashes;
    893      1.1  christos   const Elf_Internal_Rela *rel;
    894      1.1  christos   const Elf_Internal_Rela *rel_end;
    895      1.1  christos   asection *sreloc;
    896      1.1  christos   bfd_signed_vma *local_got_refcounts;
    897      1.1  christos   int tls_type, old_tls_type;
    898      1.1  christos 
    899      1.1  christos   if (info->relocatable)
    900      1.1  christos     return TRUE;
    901      1.1  christos 
    902      1.1  christos   BFD_ASSERT (is_s390_elf (abfd));
    903      1.1  christos 
    904      1.1  christos   htab = elf_s390_hash_table (info);
    905      1.1  christos   if (htab == NULL)
    906      1.1  christos     return FALSE;
    907      1.1  christos 
    908      1.1  christos   symtab_hdr = &elf_symtab_hdr (abfd);
    909      1.1  christos   sym_hashes = elf_sym_hashes (abfd);
    910      1.1  christos   local_got_refcounts = elf_local_got_refcounts (abfd);
    911      1.1  christos 
    912      1.1  christos   sreloc = NULL;
    913      1.1  christos 
    914      1.1  christos   rel_end = relocs + sec->reloc_count;
    915      1.1  christos   for (rel = relocs; rel < rel_end; rel++)
    916      1.1  christos     {
    917      1.1  christos       unsigned int r_type;
    918      1.1  christos       unsigned long r_symndx;
    919      1.1  christos       struct elf_link_hash_entry *h;
    920      1.1  christos       Elf_Internal_Sym *isym;
    921      1.1  christos 
    922      1.1  christos       r_symndx = ELF64_R_SYM (rel->r_info);
    923      1.1  christos 
    924      1.1  christos       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
    925      1.1  christos 	{
    926      1.1  christos 	  (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
    927      1.1  christos 				 abfd,
    928      1.1  christos 				 r_symndx);
    929      1.1  christos 	  return FALSE;
    930      1.1  christos 	}
    931      1.1  christos 
    932      1.1  christos       if (r_symndx < symtab_hdr->sh_info)
    933      1.1  christos 	{
    934      1.1  christos 	  /* A local symbol.  */
    935      1.1  christos 	  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
    936      1.1  christos 					abfd, r_symndx);
    937      1.1  christos 	  if (isym == NULL)
    938      1.1  christos 	    return FALSE;
    939      1.1  christos 
    940      1.1  christos 	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
    941      1.1  christos 	    {
    942      1.1  christos 	      struct plt_entry *plt;
    943      1.1  christos 
    944      1.1  christos 	      if (htab->elf.dynobj == NULL)
    945      1.1  christos 		htab->elf.dynobj = abfd;
    946      1.1  christos 
    947      1.1  christos 	      if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
    948      1.1  christos 		return FALSE;
    949      1.1  christos 
    950      1.1  christos 	      if (local_got_refcounts == NULL)
    951      1.1  christos 		{
    952      1.1  christos 		  if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
    953      1.1  christos 		    return FALSE;
    954      1.1  christos 		  local_got_refcounts = elf_local_got_refcounts (abfd);
    955      1.1  christos 		}
    956      1.1  christos 	      plt = elf_s390_local_plt (abfd);
    957      1.1  christos 	      plt[r_symndx].plt.refcount++;
    958      1.1  christos 	    }
    959      1.1  christos 	  h = NULL;
    960      1.1  christos 	}
    961      1.1  christos       else
    962      1.1  christos 	{
    963      1.1  christos 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
    964      1.1  christos 	  while (h->root.type == bfd_link_hash_indirect
    965      1.1  christos 		 || h->root.type == bfd_link_hash_warning)
    966      1.1  christos 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
    967      1.1  christos 
    968      1.1  christos 	  /* PR15323, ref flags aren't set for references in the same
    969      1.1  christos 	     object.  */
    970      1.1  christos 	  h->root.non_ir_ref = 1;
    971      1.1  christos 	}
    972      1.1  christos 
    973      1.1  christos       /* Create got section and local_got_refcounts array if they
    974      1.1  christos 	 are needed.  */
    975      1.1  christos       r_type = elf_s390_tls_transition (info,
    976      1.1  christos 					ELF64_R_TYPE (rel->r_info),
    977      1.1  christos 					h == NULL);
    978      1.1  christos       switch (r_type)
    979      1.1  christos 	{
    980      1.1  christos 	case R_390_GOT12:
    981      1.1  christos 	case R_390_GOT16:
    982      1.1  christos 	case R_390_GOT20:
    983      1.1  christos 	case R_390_GOT32:
    984      1.1  christos 	case R_390_GOT64:
    985      1.1  christos 	case R_390_GOTENT:
    986      1.1  christos 	case R_390_GOTPLT12:
    987      1.1  christos 	case R_390_GOTPLT16:
    988      1.1  christos 	case R_390_GOTPLT20:
    989      1.1  christos 	case R_390_GOTPLT32:
    990      1.1  christos 	case R_390_GOTPLT64:
    991      1.1  christos 	case R_390_GOTPLTENT:
    992      1.1  christos 	case R_390_TLS_GD64:
    993      1.1  christos 	case R_390_TLS_GOTIE12:
    994      1.1  christos 	case R_390_TLS_GOTIE20:
    995      1.1  christos 	case R_390_TLS_GOTIE64:
    996      1.1  christos 	case R_390_TLS_IEENT:
    997      1.1  christos 	case R_390_TLS_IE64:
    998      1.1  christos 	case R_390_TLS_LDM64:
    999      1.1  christos 	  if (h == NULL
   1000      1.1  christos 	      && local_got_refcounts == NULL)
   1001      1.1  christos 	    {
   1002      1.1  christos 	      if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
   1003      1.1  christos 		return FALSE;
   1004      1.1  christos 	      local_got_refcounts = elf_local_got_refcounts (abfd);
   1005      1.1  christos 	    }
   1006      1.1  christos 
   1007      1.1  christos 	  /* Fall through.  */
   1008      1.1  christos 	case R_390_GOTOFF16:
   1009      1.1  christos 	case R_390_GOTOFF32:
   1010      1.1  christos 	case R_390_GOTOFF64:
   1011      1.1  christos 	case R_390_GOTPC:
   1012      1.1  christos 	case R_390_GOTPCDBL:
   1013      1.1  christos 	  if (htab->elf.sgot == NULL)
   1014      1.1  christos 	    {
   1015      1.1  christos 	      if (htab->elf.dynobj == NULL)
   1016      1.1  christos 		htab->elf.dynobj = abfd;
   1017      1.1  christos 	      if (!create_got_section (htab->elf.dynobj, info))
   1018      1.1  christos 		return FALSE;
   1019      1.1  christos 	    }
   1020      1.1  christos 	}
   1021      1.1  christos 
   1022      1.1  christos       if (h != NULL)
   1023      1.1  christos 	{
   1024      1.1  christos 	  if (htab->elf.dynobj == NULL)
   1025      1.1  christos 	    htab->elf.dynobj = abfd;
   1026      1.1  christos 	  if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
   1027      1.1  christos 	    return FALSE;
   1028      1.1  christos 
   1029      1.1  christos 	  /* Make sure an IFUNC symbol defined in a non-shared object
   1030      1.1  christos 	     always gets a PLT slot.  */
   1031      1.1  christos 	  if (s390_is_ifunc_symbol_p (h) && h->def_regular)
   1032      1.1  christos 	    {
   1033      1.1  christos 	      /* The symbol is called by the dynamic loader in order
   1034      1.1  christos 		 to resolve the relocation.  So it is in fact also
   1035      1.1  christos 		 referenced.  */
   1036      1.1  christos 	      h->ref_regular = 1;
   1037      1.1  christos 	      h->needs_plt = 1;
   1038      1.1  christos 	    }
   1039      1.1  christos 	}
   1040      1.1  christos 
   1041      1.1  christos       switch (r_type)
   1042      1.1  christos 	{
   1043      1.1  christos 	case R_390_GOTOFF16:
   1044      1.1  christos 	case R_390_GOTOFF32:
   1045      1.1  christos 	case R_390_GOTOFF64:
   1046      1.1  christos 	case R_390_GOTPC:
   1047      1.1  christos 	case R_390_GOTPCDBL:
   1048      1.1  christos 	  /* These relocs do not need a GOT slot.  They just load the
   1049      1.1  christos 	     GOT pointer itself or address something else relative to
   1050      1.1  christos 	     the GOT.  Since the GOT pointer has been set up above we
   1051      1.1  christos 	     are done.  */
   1052      1.1  christos 	  break;
   1053      1.1  christos 
   1054      1.1  christos 	case R_390_PLT12DBL:
   1055      1.1  christos 	case R_390_PLT16DBL:
   1056      1.1  christos 	case R_390_PLT24DBL:
   1057      1.1  christos 	case R_390_PLT32:
   1058      1.1  christos 	case R_390_PLT32DBL:
   1059      1.1  christos 	case R_390_PLT64:
   1060      1.1  christos 	case R_390_PLTOFF16:
   1061      1.1  christos 	case R_390_PLTOFF32:
   1062      1.1  christos 	case R_390_PLTOFF64:
   1063      1.1  christos 	  /* This symbol requires a procedure linkage table entry.  We
   1064      1.1  christos 	     actually build the entry in adjust_dynamic_symbol,
   1065      1.1  christos 	     because this might be a case of linking PIC code which is
   1066      1.1  christos 	     never referenced by a dynamic object, in which case we
   1067      1.1  christos 	     don't need to generate a procedure linkage table entry
   1068      1.1  christos 	     after all.  */
   1069      1.1  christos 
   1070      1.1  christos 	  /* If this is a local symbol, we resolve it directly without
   1071      1.1  christos 	     creating a procedure linkage table entry.  */
   1072      1.1  christos 	  if (h != NULL)
   1073      1.1  christos 	    {
   1074      1.1  christos 	      h->needs_plt = 1;
   1075      1.1  christos 	      h->plt.refcount += 1;
   1076      1.1  christos 	    }
   1077      1.1  christos 	  break;
   1078      1.1  christos 
   1079      1.1  christos 	case R_390_GOTPLT12:
   1080      1.1  christos 	case R_390_GOTPLT16:
   1081      1.1  christos 	case R_390_GOTPLT20:
   1082      1.1  christos 	case R_390_GOTPLT32:
   1083      1.1  christos 	case R_390_GOTPLT64:
   1084      1.1  christos 	case R_390_GOTPLTENT:
   1085      1.1  christos 	  /* This symbol requires either a procedure linkage table entry
   1086      1.1  christos 	     or an entry in the local got. We actually build the entry
   1087      1.1  christos 	     in adjust_dynamic_symbol because whether this is really a
   1088      1.1  christos 	     global reference can change and with it the fact if we have
   1089      1.1  christos 	     to create a plt entry or a local got entry. To be able to
   1090      1.1  christos 	     make a once global symbol a local one we have to keep track
   1091      1.1  christos 	     of the number of gotplt references that exist for this
   1092      1.1  christos 	     symbol.  */
   1093      1.1  christos 	  if (h != NULL)
   1094      1.1  christos 	    {
   1095      1.1  christos 	      ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
   1096      1.1  christos 	      h->needs_plt = 1;
   1097      1.1  christos 	      h->plt.refcount += 1;
   1098      1.1  christos 	    }
   1099      1.1  christos 	  else
   1100      1.1  christos 	    local_got_refcounts[r_symndx] += 1;
   1101      1.1  christos 	  break;
   1102      1.1  christos 
   1103      1.1  christos 	case R_390_TLS_LDM64:
   1104      1.1  christos 	  htab->tls_ldm_got.refcount += 1;
   1105      1.1  christos 	  break;
   1106      1.1  christos 
   1107      1.1  christos 	case R_390_TLS_IE64:
   1108      1.1  christos 	case R_390_TLS_GOTIE12:
   1109      1.1  christos 	case R_390_TLS_GOTIE20:
   1110      1.1  christos 	case R_390_TLS_GOTIE64:
   1111      1.1  christos 	case R_390_TLS_IEENT:
   1112      1.1  christos 	  if (info->shared)
   1113      1.1  christos 	    info->flags |= DF_STATIC_TLS;
   1114      1.1  christos 	  /* Fall through */
   1115      1.1  christos 
   1116      1.1  christos 	case R_390_GOT12:
   1117      1.1  christos 	case R_390_GOT16:
   1118      1.1  christos 	case R_390_GOT20:
   1119      1.1  christos 	case R_390_GOT32:
   1120      1.1  christos 	case R_390_GOT64:
   1121      1.1  christos 	case R_390_GOTENT:
   1122      1.1  christos 	case R_390_TLS_GD64:
   1123      1.1  christos 	  /* This symbol requires a global offset table entry.  */
   1124      1.1  christos 	  switch (r_type)
   1125      1.1  christos 	    {
   1126      1.1  christos 	    default:
   1127      1.1  christos 	    case R_390_GOT12:
   1128      1.1  christos 	    case R_390_GOT16:
   1129      1.1  christos 	    case R_390_GOT20:
   1130      1.1  christos 	    case R_390_GOT32:
   1131      1.1  christos 	    case R_390_GOTENT:
   1132      1.1  christos 	      tls_type = GOT_NORMAL;
   1133      1.1  christos 	      break;
   1134      1.1  christos 	    case R_390_TLS_GD64:
   1135      1.1  christos 	      tls_type = GOT_TLS_GD;
   1136      1.1  christos 	      break;
   1137      1.1  christos 	    case R_390_TLS_IE64:
   1138      1.1  christos 	    case R_390_TLS_GOTIE64:
   1139      1.1  christos 	      tls_type = GOT_TLS_IE;
   1140      1.1  christos 	      break;
   1141      1.1  christos 	    case R_390_TLS_GOTIE12:
   1142      1.1  christos 	    case R_390_TLS_GOTIE20:
   1143      1.1  christos 	    case R_390_TLS_IEENT:
   1144      1.1  christos 	      tls_type = GOT_TLS_IE_NLT;
   1145      1.1  christos 	      break;
   1146      1.1  christos 	    }
   1147      1.1  christos 
   1148      1.1  christos 	  if (h != NULL)
   1149      1.1  christos 	    {
   1150      1.1  christos 	      h->got.refcount += 1;
   1151      1.1  christos 	      old_tls_type = elf_s390_hash_entry(h)->tls_type;
   1152      1.1  christos 	    }
   1153      1.1  christos 	  else
   1154      1.1  christos 	    {
   1155      1.1  christos 	      local_got_refcounts[r_symndx] += 1;
   1156      1.1  christos 	      old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
   1157      1.1  christos 	    }
   1158      1.1  christos 	  /* If a TLS symbol is accessed using IE at least once,
   1159      1.1  christos 	     there is no point to use dynamic model for it.  */
   1160      1.1  christos 	  if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
   1161      1.1  christos 	    {
   1162      1.1  christos 	      if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
   1163      1.1  christos 		{
   1164      1.1  christos 		  (*_bfd_error_handler)
   1165      1.1  christos 		    (_("%B: `%s' accessed both as normal and thread local symbol"),
   1166      1.1  christos 		     abfd, h->root.root.string);
   1167      1.1  christos 		  return FALSE;
   1168      1.1  christos 		}
   1169      1.1  christos 	      if (old_tls_type > tls_type)
   1170      1.1  christos 		tls_type = old_tls_type;
   1171      1.1  christos 	    }
   1172      1.1  christos 
   1173      1.1  christos 	  if (old_tls_type != tls_type)
   1174      1.1  christos 	    {
   1175      1.1  christos 	      if (h != NULL)
   1176      1.1  christos 		elf_s390_hash_entry (h)->tls_type = tls_type;
   1177      1.1  christos 	      else
   1178      1.1  christos 		elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
   1179      1.1  christos 	    }
   1180      1.1  christos 
   1181      1.1  christos 	  if (r_type != R_390_TLS_IE64)
   1182      1.1  christos 	    break;
   1183      1.1  christos 	  /* Fall through */
   1184      1.1  christos 
   1185      1.1  christos 	case R_390_TLS_LE64:
   1186  1.1.1.2  christos 	  /* For static linking and executables this reloc will be
   1187  1.1.1.2  christos 	     calculated at linktime otherwise a TLS_TPOFF runtime
   1188  1.1.1.2  christos 	     reloc will be generated.  */
   1189  1.1.1.2  christos 	  if (r_type == R_390_TLS_LE64 && info->pie)
   1190  1.1.1.2  christos 	    break;
   1191  1.1.1.2  christos 
   1192      1.1  christos 	  if (!info->shared)
   1193      1.1  christos 	    break;
   1194      1.1  christos 	  info->flags |= DF_STATIC_TLS;
   1195      1.1  christos 	  /* Fall through */
   1196      1.1  christos 
   1197      1.1  christos 	case R_390_8:
   1198      1.1  christos 	case R_390_16:
   1199      1.1  christos 	case R_390_32:
   1200      1.1  christos 	case R_390_64:
   1201      1.1  christos 	case R_390_PC12DBL:
   1202      1.1  christos 	case R_390_PC16:
   1203      1.1  christos 	case R_390_PC16DBL:
   1204      1.1  christos 	case R_390_PC24DBL:
   1205      1.1  christos 	case R_390_PC32:
   1206      1.1  christos 	case R_390_PC32DBL:
   1207      1.1  christos 	case R_390_PC64:
   1208      1.1  christos 	  if (h != NULL)
   1209      1.1  christos 	    {
   1210      1.1  christos 	      /* If this reloc is in a read-only section, we might
   1211      1.1  christos 		 need a copy reloc.  We can't check reliably at this
   1212      1.1  christos 		 stage whether the section is read-only, as input
   1213      1.1  christos 		 sections have not yet been mapped to output sections.
   1214      1.1  christos 		 Tentatively set the flag for now, and correct in
   1215      1.1  christos 		 adjust_dynamic_symbol.  */
   1216      1.1  christos 	      h->non_got_ref = 1;
   1217      1.1  christos 
   1218      1.1  christos 	      if (!info->shared)
   1219      1.1  christos 		{
   1220      1.1  christos 		  /* We may need a .plt entry if the function this reloc
   1221      1.1  christos 		     refers to is in a shared lib.  */
   1222      1.1  christos 		  h->plt.refcount += 1;
   1223      1.1  christos 		}
   1224      1.1  christos 	    }
   1225      1.1  christos 
   1226      1.1  christos 	  /* If we are creating a shared library, and this is a reloc
   1227      1.1  christos 	     against a global symbol, or a non PC relative reloc
   1228      1.1  christos 	     against a local symbol, then we need to copy the reloc
   1229      1.1  christos 	     into the shared library.  However, if we are linking with
   1230      1.1  christos 	     -Bsymbolic, we do not need to copy a reloc against a
   1231      1.1  christos 	     global symbol which is defined in an object we are
   1232      1.1  christos 	     including in the link (i.e., DEF_REGULAR is set).  At
   1233      1.1  christos 	     this point we have not seen all the input files, so it is
   1234      1.1  christos 	     possible that DEF_REGULAR is not set now but will be set
   1235      1.1  christos 	     later (it is never cleared).  In case of a weak definition,
   1236      1.1  christos 	     DEF_REGULAR may be cleared later by a strong definition in
   1237      1.1  christos 	     a shared library. We account for that possibility below by
   1238      1.1  christos 	     storing information in the relocs_copied field of the hash
   1239      1.1  christos 	     table entry.  A similar situation occurs when creating
   1240      1.1  christos 	     shared libraries and symbol visibility changes render the
   1241      1.1  christos 	     symbol local.
   1242      1.1  christos 
   1243      1.1  christos 	     If on the other hand, we are creating an executable, we
   1244      1.1  christos 	     may need to keep relocations for symbols satisfied by a
   1245      1.1  christos 	     dynamic library if we manage to avoid copy relocs for the
   1246      1.1  christos 	     symbol.  */
   1247      1.1  christos 	  if ((info->shared
   1248      1.1  christos 	       && (sec->flags & SEC_ALLOC) != 0
   1249      1.1  christos 	       && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
   1250      1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
   1251      1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
   1252      1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
   1253      1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC32
   1254      1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
   1255      1.1  christos 		    && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
   1256      1.1  christos 		   || (h != NULL
   1257      1.1  christos 		       && (! SYMBOLIC_BIND (info, h)
   1258      1.1  christos 			   || h->root.type == bfd_link_hash_defweak
   1259      1.1  christos 			   || !h->def_regular))))
   1260      1.1  christos 	      || (ELIMINATE_COPY_RELOCS
   1261      1.1  christos 		  && !info->shared
   1262      1.1  christos 		  && (sec->flags & SEC_ALLOC) != 0
   1263      1.1  christos 		  && h != NULL
   1264      1.1  christos 		  && (h->root.type == bfd_link_hash_defweak
   1265      1.1  christos 		      || !h->def_regular)))
   1266      1.1  christos 	    {
   1267      1.1  christos 	      struct elf_dyn_relocs *p;
   1268      1.1  christos 	      struct elf_dyn_relocs **head;
   1269      1.1  christos 
   1270      1.1  christos 	      /* We must copy these reloc types into the output file.
   1271      1.1  christos 		 Create a reloc section in dynobj and make room for
   1272      1.1  christos 		 this reloc.  */
   1273      1.1  christos 	      if (sreloc == NULL)
   1274      1.1  christos 		{
   1275      1.1  christos 		  if (htab->elf.dynobj == NULL)
   1276      1.1  christos 		    htab->elf.dynobj = abfd;
   1277      1.1  christos 
   1278      1.1  christos 		  sreloc = _bfd_elf_make_dynamic_reloc_section
   1279      1.1  christos 		    (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
   1280      1.1  christos 
   1281      1.1  christos 		  if (sreloc == NULL)
   1282      1.1  christos 		    return FALSE;
   1283      1.1  christos 		}
   1284      1.1  christos 
   1285      1.1  christos 	      /* If this is a global symbol, we count the number of
   1286      1.1  christos 		 relocations we need for this symbol.  */
   1287      1.1  christos 	      if (h != NULL)
   1288      1.1  christos 		{
   1289      1.1  christos 		  head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
   1290      1.1  christos 		}
   1291      1.1  christos 	      else
   1292      1.1  christos 		{
   1293      1.1  christos 		  /* Track dynamic relocs needed for local syms too.
   1294      1.1  christos 		     We really need local syms available to do this
   1295      1.1  christos 		     easily.  Oh well.  */
   1296      1.1  christos 		  asection *s;
   1297      1.1  christos 		  void *vpp;
   1298      1.1  christos 
   1299      1.1  christos 		  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   1300      1.1  christos 						abfd, r_symndx);
   1301      1.1  christos 		  if (isym == NULL)
   1302      1.1  christos 		    return FALSE;
   1303      1.1  christos 
   1304      1.1  christos 		  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
   1305      1.1  christos 		  if (s == NULL)
   1306      1.1  christos 		    s = sec;
   1307      1.1  christos 
   1308      1.1  christos 		  vpp = &elf_section_data (s)->local_dynrel;
   1309      1.1  christos 		  head = (struct elf_dyn_relocs **) vpp;
   1310      1.1  christos 		}
   1311      1.1  christos 
   1312      1.1  christos 	      p = *head;
   1313      1.1  christos 	      if (p == NULL || p->sec != sec)
   1314      1.1  christos 		{
   1315      1.1  christos 		  bfd_size_type amt = sizeof *p;
   1316      1.1  christos 		  p = ((struct elf_dyn_relocs *)
   1317      1.1  christos 		       bfd_alloc (htab->elf.dynobj, amt));
   1318      1.1  christos 		  if (p == NULL)
   1319      1.1  christos 		    return FALSE;
   1320      1.1  christos 		  p->next = *head;
   1321      1.1  christos 		  *head = p;
   1322      1.1  christos 		  p->sec = sec;
   1323      1.1  christos 		  p->count = 0;
   1324      1.1  christos 		  p->pc_count = 0;
   1325      1.1  christos 		}
   1326      1.1  christos 
   1327      1.1  christos 	      p->count += 1;
   1328      1.1  christos 	      if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
   1329      1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
   1330      1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
   1331      1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
   1332      1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC32
   1333      1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
   1334      1.1  christos 		  || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
   1335      1.1  christos 		p->pc_count += 1;
   1336      1.1  christos 	    }
   1337      1.1  christos 	  break;
   1338      1.1  christos 
   1339      1.1  christos 	  /* This relocation describes the C++ object vtable hierarchy.
   1340      1.1  christos 	     Reconstruct it for later use during GC.  */
   1341      1.1  christos 	case R_390_GNU_VTINHERIT:
   1342      1.1  christos 	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
   1343      1.1  christos 	    return FALSE;
   1344      1.1  christos 	  break;
   1345      1.1  christos 
   1346      1.1  christos 	  /* This relocation describes which C++ vtable entries are actually
   1347      1.1  christos 	     used.  Record for later use during GC.  */
   1348      1.1  christos 	case R_390_GNU_VTENTRY:
   1349      1.1  christos 	  BFD_ASSERT (h != NULL);
   1350      1.1  christos 	  if (h != NULL
   1351      1.1  christos 	      && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
   1352      1.1  christos 	    return FALSE;
   1353      1.1  christos 	  break;
   1354      1.1  christos 
   1355      1.1  christos 	default:
   1356      1.1  christos 	  break;
   1357      1.1  christos 	}
   1358      1.1  christos     }
   1359      1.1  christos 
   1360      1.1  christos   return TRUE;
   1361      1.1  christos }
   1362      1.1  christos 
   1363      1.1  christos /* Return the section that should be marked against GC for a given
   1364      1.1  christos    relocation.  */
   1365      1.1  christos 
   1366      1.1  christos static asection *
   1367      1.1  christos elf_s390_gc_mark_hook (asection *sec,
   1368      1.1  christos 		       struct bfd_link_info *info,
   1369      1.1  christos 		       Elf_Internal_Rela *rel,
   1370      1.1  christos 		       struct elf_link_hash_entry *h,
   1371      1.1  christos 		       Elf_Internal_Sym *sym)
   1372      1.1  christos {
   1373      1.1  christos   if (h != NULL)
   1374      1.1  christos     switch (ELF64_R_TYPE (rel->r_info))
   1375      1.1  christos       {
   1376      1.1  christos       case R_390_GNU_VTINHERIT:
   1377      1.1  christos       case R_390_GNU_VTENTRY:
   1378      1.1  christos 	return NULL;
   1379      1.1  christos       }
   1380      1.1  christos 
   1381      1.1  christos   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
   1382      1.1  christos }
   1383      1.1  christos 
   1384      1.1  christos /* Update the got entry reference counts for the section being removed.  */
   1385      1.1  christos 
   1386      1.1  christos static bfd_boolean
   1387      1.1  christos elf_s390_gc_sweep_hook (bfd *abfd,
   1388      1.1  christos 			struct bfd_link_info *info,
   1389      1.1  christos 			asection *sec,
   1390      1.1  christos 			const Elf_Internal_Rela *relocs)
   1391      1.1  christos {
   1392      1.1  christos   struct elf_s390_link_hash_table *htab;
   1393      1.1  christos   Elf_Internal_Shdr *symtab_hdr;
   1394      1.1  christos   struct elf_link_hash_entry **sym_hashes;
   1395      1.1  christos   bfd_signed_vma *local_got_refcounts;
   1396      1.1  christos   const Elf_Internal_Rela *rel, *relend;
   1397      1.1  christos 
   1398      1.1  christos   if (info->relocatable)
   1399      1.1  christos     return TRUE;
   1400      1.1  christos 
   1401      1.1  christos   htab = elf_s390_hash_table (info);
   1402      1.1  christos   if (htab == NULL)
   1403      1.1  christos     return FALSE;
   1404      1.1  christos 
   1405      1.1  christos   elf_section_data (sec)->local_dynrel = NULL;
   1406      1.1  christos 
   1407      1.1  christos   symtab_hdr = &elf_symtab_hdr (abfd);
   1408      1.1  christos   sym_hashes = elf_sym_hashes (abfd);
   1409      1.1  christos   local_got_refcounts = elf_local_got_refcounts (abfd);
   1410      1.1  christos 
   1411      1.1  christos   relend = relocs + sec->reloc_count;
   1412      1.1  christos   for (rel = relocs; rel < relend; rel++)
   1413      1.1  christos     {
   1414      1.1  christos       unsigned long r_symndx;
   1415      1.1  christos       unsigned int r_type;
   1416      1.1  christos       struct elf_link_hash_entry *h = NULL;
   1417      1.1  christos 
   1418      1.1  christos       r_symndx = ELF64_R_SYM (rel->r_info);
   1419      1.1  christos       if (r_symndx >= symtab_hdr->sh_info)
   1420      1.1  christos 	{
   1421      1.1  christos 	  struct elf_s390_link_hash_entry *eh;
   1422      1.1  christos 	  struct elf_dyn_relocs **pp;
   1423      1.1  christos 	  struct elf_dyn_relocs *p;
   1424      1.1  christos 
   1425      1.1  christos 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
   1426      1.1  christos 	  while (h->root.type == bfd_link_hash_indirect
   1427      1.1  christos 		 || h->root.type == bfd_link_hash_warning)
   1428      1.1  christos 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
   1429      1.1  christos 	  eh = (struct elf_s390_link_hash_entry *) h;
   1430      1.1  christos 
   1431      1.1  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
   1432      1.1  christos 	    if (p->sec == sec)
   1433      1.1  christos 	      {
   1434      1.1  christos 		/* Everything must go for SEC.  */
   1435      1.1  christos 		*pp = p->next;
   1436      1.1  christos 		break;
   1437      1.1  christos 	      }
   1438      1.1  christos 	}
   1439      1.1  christos       else
   1440      1.1  christos 	{
   1441      1.1  christos 	  Elf_Internal_Sym *isym;
   1442      1.1  christos 
   1443      1.1  christos 	  /* A local symbol.  */
   1444      1.1  christos 	  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
   1445      1.1  christos 					abfd, r_symndx);
   1446      1.1  christos 	  if (isym == NULL)
   1447      1.1  christos 	    return FALSE;
   1448      1.1  christos 
   1449      1.1  christos 	  if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
   1450      1.1  christos 	    {
   1451      1.1  christos 	      struct plt_entry *plt = elf_s390_local_plt (abfd);
   1452      1.1  christos 	      if (plt[r_symndx].plt.refcount > 0)
   1453      1.1  christos 		plt[r_symndx].plt.refcount--;
   1454      1.1  christos 	    }
   1455      1.1  christos 	}
   1456      1.1  christos 
   1457      1.1  christos       r_type = ELF64_R_TYPE (rel->r_info);
   1458      1.1  christos       r_type = elf_s390_tls_transition (info, r_type, h != NULL);
   1459      1.1  christos       switch (r_type)
   1460      1.1  christos 	{
   1461      1.1  christos 	case R_390_TLS_LDM64:
   1462      1.1  christos 	  if (htab->tls_ldm_got.refcount > 0)
   1463      1.1  christos 	    htab->tls_ldm_got.refcount -= 1;
   1464      1.1  christos 	  break;
   1465      1.1  christos 
   1466      1.1  christos 	case R_390_TLS_GD64:
   1467      1.1  christos 	case R_390_TLS_IE64:
   1468      1.1  christos 	case R_390_TLS_GOTIE12:
   1469      1.1  christos 	case R_390_TLS_GOTIE20:
   1470      1.1  christos 	case R_390_TLS_GOTIE64:
   1471      1.1  christos 	case R_390_TLS_IEENT:
   1472      1.1  christos 	case R_390_GOT12:
   1473      1.1  christos 	case R_390_GOT16:
   1474      1.1  christos 	case R_390_GOT20:
   1475      1.1  christos 	case R_390_GOT32:
   1476      1.1  christos 	case R_390_GOT64:
   1477      1.1  christos 	case R_390_GOTOFF16:
   1478      1.1  christos 	case R_390_GOTOFF32:
   1479      1.1  christos 	case R_390_GOTOFF64:
   1480      1.1  christos 	case R_390_GOTPC:
   1481      1.1  christos 	case R_390_GOTPCDBL:
   1482      1.1  christos 	case R_390_GOTENT:
   1483      1.1  christos 	  if (h != NULL)
   1484      1.1  christos 	    {
   1485      1.1  christos 	      if (h->got.refcount > 0)
   1486      1.1  christos 		h->got.refcount -= 1;
   1487      1.1  christos 	    }
   1488      1.1  christos 	  else if (local_got_refcounts != NULL)
   1489      1.1  christos 	    {
   1490      1.1  christos 	      if (local_got_refcounts[r_symndx] > 0)
   1491      1.1  christos 		local_got_refcounts[r_symndx] -= 1;
   1492      1.1  christos 	    }
   1493      1.1  christos 	  break;
   1494      1.1  christos 
   1495      1.1  christos 	case R_390_8:
   1496      1.1  christos 	case R_390_12:
   1497      1.1  christos 	case R_390_16:
   1498      1.1  christos 	case R_390_20:
   1499      1.1  christos 	case R_390_32:
   1500      1.1  christos 	case R_390_64:
   1501      1.1  christos 	case R_390_PC16:
   1502      1.1  christos 	case R_390_PC12DBL:
   1503      1.1  christos 	case R_390_PC16DBL:
   1504      1.1  christos 	case R_390_PC24DBL:
   1505      1.1  christos 	case R_390_PC32:
   1506      1.1  christos 	case R_390_PC32DBL:
   1507      1.1  christos 	case R_390_PC64:
   1508      1.1  christos 	  if (info->shared)
   1509      1.1  christos 	    break;
   1510      1.1  christos 	  /* Fall through */
   1511      1.1  christos 
   1512      1.1  christos 	case R_390_PLT12DBL:
   1513      1.1  christos 	case R_390_PLT16DBL:
   1514      1.1  christos 	case R_390_PLT24DBL:
   1515      1.1  christos 	case R_390_PLT32:
   1516      1.1  christos 	case R_390_PLT32DBL:
   1517      1.1  christos 	case R_390_PLT64:
   1518      1.1  christos 	case R_390_PLTOFF16:
   1519      1.1  christos 	case R_390_PLTOFF32:
   1520      1.1  christos 	case R_390_PLTOFF64:
   1521      1.1  christos 	  if (h != NULL)
   1522      1.1  christos 	    {
   1523      1.1  christos 	      if (h->plt.refcount > 0)
   1524      1.1  christos 		h->plt.refcount -= 1;
   1525      1.1  christos 	    }
   1526      1.1  christos 	  break;
   1527      1.1  christos 
   1528      1.1  christos 	case R_390_GOTPLT12:
   1529      1.1  christos 	case R_390_GOTPLT16:
   1530      1.1  christos 	case R_390_GOTPLT20:
   1531      1.1  christos 	case R_390_GOTPLT32:
   1532      1.1  christos 	case R_390_GOTPLT64:
   1533      1.1  christos 	case R_390_GOTPLTENT:
   1534      1.1  christos 	  if (h != NULL)
   1535      1.1  christos 	    {
   1536      1.1  christos 	      if (h->plt.refcount > 0)
   1537      1.1  christos 		{
   1538      1.1  christos 		  ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
   1539      1.1  christos 		  h->plt.refcount -= 1;
   1540      1.1  christos 		}
   1541      1.1  christos 	    }
   1542      1.1  christos 	  else if (local_got_refcounts != NULL)
   1543      1.1  christos 	    {
   1544      1.1  christos 	      if (local_got_refcounts[r_symndx] > 0)
   1545      1.1  christos 		local_got_refcounts[r_symndx] -= 1;
   1546      1.1  christos 	    }
   1547      1.1  christos 	  break;
   1548      1.1  christos 
   1549      1.1  christos 	default:
   1550      1.1  christos 	  break;
   1551      1.1  christos 	}
   1552      1.1  christos     }
   1553      1.1  christos 
   1554      1.1  christos   return TRUE;
   1555      1.1  christos }
   1556      1.1  christos 
   1557      1.1  christos /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
   1558      1.1  christos    entry but we found we will not create any.  Called when we find we will
   1559      1.1  christos    not have any PLT for this symbol, by for example
   1560      1.1  christos    elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
   1561      1.1  christos    or elf_s390_size_dynamic_sections if no dynamic sections will be
   1562      1.1  christos    created (we're only linking static objects).  */
   1563      1.1  christos 
   1564      1.1  christos static void
   1565      1.1  christos elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
   1566      1.1  christos {
   1567      1.1  christos   if (h->elf.root.type == bfd_link_hash_warning)
   1568      1.1  christos     h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
   1569      1.1  christos 
   1570      1.1  christos   if (h->gotplt_refcount <= 0)
   1571      1.1  christos     return;
   1572      1.1  christos 
   1573      1.1  christos   /* We simply add the number of gotplt references to the number
   1574      1.1  christos    * of got references for this symbol.  */
   1575      1.1  christos   h->elf.got.refcount += h->gotplt_refcount;
   1576      1.1  christos   h->gotplt_refcount = -1;
   1577      1.1  christos }
   1578      1.1  christos 
   1579      1.1  christos /* Adjust a symbol defined by a dynamic object and referenced by a
   1580      1.1  christos    regular object.  The current definition is in some section of the
   1581      1.1  christos    dynamic object, but we're not including those sections.  We have to
   1582      1.1  christos    change the definition to something the rest of the link can
   1583      1.1  christos    understand.  */
   1584      1.1  christos 
   1585      1.1  christos static bfd_boolean
   1586      1.1  christos elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
   1587      1.1  christos 				struct elf_link_hash_entry *h)
   1588      1.1  christos {
   1589      1.1  christos   struct elf_s390_link_hash_table *htab;
   1590      1.1  christos   asection *s;
   1591      1.1  christos 
   1592      1.1  christos   /* STT_GNU_IFUNC symbol must go through PLT. */
   1593      1.1  christos   if (s390_is_ifunc_symbol_p (h))
   1594      1.1  christos     return TRUE;
   1595      1.1  christos 
   1596      1.1  christos   /* If this is a function, put it in the procedure linkage table.  We
   1597      1.1  christos      will fill in the contents of the procedure linkage table later
   1598      1.1  christos      (although we could actually do it here).  */
   1599      1.1  christos   if (h->type == STT_FUNC
   1600      1.1  christos       || h->needs_plt)
   1601      1.1  christos     {
   1602      1.1  christos       if (h->plt.refcount <= 0
   1603      1.1  christos 	  || SYMBOL_CALLS_LOCAL (info, h)
   1604      1.1  christos 	  || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
   1605      1.1  christos 	      && h->root.type == bfd_link_hash_undefweak))
   1606      1.1  christos 	{
   1607      1.1  christos 	  /* This case can occur if we saw a PLT32 reloc in an input
   1608      1.1  christos 	     file, but the symbol was never referred to by a dynamic
   1609      1.1  christos 	     object, or if all references were garbage collected.  In
   1610      1.1  christos 	     such a case, we don't actually need to build a procedure
   1611      1.1  christos 	     linkage table, and we can just do a PC32 reloc instead.  */
   1612      1.1  christos 	  h->plt.offset = (bfd_vma) -1;
   1613      1.1  christos 	  h->needs_plt = 0;
   1614      1.1  christos 	  elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
   1615      1.1  christos 	}
   1616      1.1  christos 
   1617      1.1  christos       return TRUE;
   1618      1.1  christos     }
   1619      1.1  christos   else
   1620      1.1  christos     /* It's possible that we incorrectly decided a .plt reloc was
   1621      1.1  christos        needed for an R_390_PC32 reloc to a non-function sym in
   1622      1.1  christos        check_relocs.  We can't decide accurately between function and
   1623      1.1  christos        non-function syms in check-relocs;  Objects loaded later in
   1624      1.1  christos        the link may change h->type.  So fix it now.  */
   1625      1.1  christos     h->plt.offset = (bfd_vma) -1;
   1626      1.1  christos 
   1627      1.1  christos   /* If this is a weak symbol, and there is a real definition, the
   1628      1.1  christos      processor independent code will have arranged for us to see the
   1629      1.1  christos      real definition first, and we can just use the same value.  */
   1630      1.1  christos   if (h->u.weakdef != NULL)
   1631      1.1  christos     {
   1632      1.1  christos       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
   1633      1.1  christos 		  || h->u.weakdef->root.type == bfd_link_hash_defweak);
   1634      1.1  christos       h->root.u.def.section = h->u.weakdef->root.u.def.section;
   1635      1.1  christos       h->root.u.def.value = h->u.weakdef->root.u.def.value;
   1636      1.1  christos       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
   1637      1.1  christos 	h->non_got_ref = h->u.weakdef->non_got_ref;
   1638      1.1  christos       return TRUE;
   1639      1.1  christos     }
   1640      1.1  christos 
   1641      1.1  christos   /* This is a reference to a symbol defined by a dynamic object which
   1642      1.1  christos      is not a function.  */
   1643      1.1  christos 
   1644      1.1  christos   /* If we are creating a shared library, we must presume that the
   1645      1.1  christos      only references to the symbol are via the global offset table.
   1646      1.1  christos      For such cases we need not do anything here; the relocations will
   1647      1.1  christos      be handled correctly by relocate_section.  */
   1648      1.1  christos   if (info->shared)
   1649      1.1  christos     return TRUE;
   1650      1.1  christos 
   1651      1.1  christos   /* If there are no references to this symbol that do not use the
   1652      1.1  christos      GOT, we don't need to generate a copy reloc.  */
   1653      1.1  christos   if (!h->non_got_ref)
   1654      1.1  christos     return TRUE;
   1655      1.1  christos 
   1656      1.1  christos   /* If -z nocopyreloc was given, we won't generate them either.  */
   1657      1.1  christos   if (info->nocopyreloc)
   1658      1.1  christos     {
   1659      1.1  christos       h->non_got_ref = 0;
   1660      1.1  christos       return TRUE;
   1661      1.1  christos     }
   1662      1.1  christos 
   1663      1.1  christos   if (ELIMINATE_COPY_RELOCS)
   1664      1.1  christos     {
   1665      1.1  christos       struct elf_s390_link_hash_entry * eh;
   1666      1.1  christos       struct elf_dyn_relocs *p;
   1667      1.1  christos 
   1668      1.1  christos       eh = (struct elf_s390_link_hash_entry *) h;
   1669      1.1  christos       for (p = eh->dyn_relocs; p != NULL; p = p->next)
   1670      1.1  christos 	{
   1671      1.1  christos 	  s = p->sec->output_section;
   1672      1.1  christos 	  if (s != NULL && (s->flags & SEC_READONLY) != 0)
   1673      1.1  christos 	    break;
   1674      1.1  christos 	}
   1675      1.1  christos 
   1676      1.1  christos       /* If we didn't find any dynamic relocs in read-only sections, then
   1677      1.1  christos 	 we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
   1678      1.1  christos       if (p == NULL)
   1679      1.1  christos 	{
   1680      1.1  christos 	  h->non_got_ref = 0;
   1681      1.1  christos 	  return TRUE;
   1682      1.1  christos 	}
   1683      1.1  christos     }
   1684      1.1  christos 
   1685      1.1  christos   /* We must allocate the symbol in our .dynbss section, which will
   1686      1.1  christos      become part of the .bss section of the executable.  There will be
   1687      1.1  christos      an entry for this symbol in the .dynsym section.  The dynamic
   1688      1.1  christos      object will contain position independent code, so all references
   1689      1.1  christos      from the dynamic object to this symbol will go through the global
   1690      1.1  christos      offset table.  The dynamic linker will use the .dynsym entry to
   1691      1.1  christos      determine the address it must put in the global offset table, so
   1692      1.1  christos      both the dynamic object and the regular object will refer to the
   1693      1.1  christos      same memory location for the variable.  */
   1694      1.1  christos 
   1695      1.1  christos   htab = elf_s390_hash_table (info);
   1696      1.1  christos   if (htab == NULL)
   1697      1.1  christos     return FALSE;
   1698      1.1  christos 
   1699      1.1  christos   /* We must generate a R_390_COPY reloc to tell the dynamic linker to
   1700      1.1  christos      copy the initial value out of the dynamic object and into the
   1701      1.1  christos      runtime process image.  */
   1702      1.1  christos   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
   1703      1.1  christos     {
   1704      1.1  christos       htab->srelbss->size += sizeof (Elf64_External_Rela);
   1705      1.1  christos       h->needs_copy = 1;
   1706      1.1  christos     }
   1707      1.1  christos 
   1708      1.1  christos   s = htab->sdynbss;
   1709      1.1  christos 
   1710  1.1.1.2  christos   return _bfd_elf_adjust_dynamic_copy (info, h, s);
   1711      1.1  christos }
   1712      1.1  christos 
   1713      1.1  christos /* Allocate space in .plt, .got and associated reloc sections for
   1714      1.1  christos    dynamic relocs.  */
   1715      1.1  christos 
   1716      1.1  christos static bfd_boolean
   1717      1.1  christos allocate_dynrelocs (struct elf_link_hash_entry *h,
   1718      1.1  christos 		    void * inf)
   1719      1.1  christos {
   1720      1.1  christos   struct bfd_link_info *info;
   1721      1.1  christos   struct elf_s390_link_hash_table *htab;
   1722      1.1  christos   struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
   1723      1.1  christos   struct elf_dyn_relocs *p;
   1724      1.1  christos 
   1725      1.1  christos   if (h->root.type == bfd_link_hash_indirect)
   1726      1.1  christos     return TRUE;
   1727      1.1  christos 
   1728      1.1  christos   info = (struct bfd_link_info *) inf;
   1729      1.1  christos   htab = elf_s390_hash_table (info);
   1730      1.1  christos   if (htab == NULL)
   1731      1.1  christos     return FALSE;
   1732      1.1  christos 
   1733      1.1  christos   /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
   1734      1.1  christos      here if it is defined and referenced in a non-shared object.  */
   1735      1.1  christos   if (s390_is_ifunc_symbol_p (h) && h->def_regular)
   1736      1.1  christos     return s390_elf_allocate_ifunc_dyn_relocs (info, h,
   1737      1.1  christos 					       &eh->dyn_relocs);
   1738      1.1  christos   else if (htab->elf.dynamic_sections_created
   1739      1.1  christos 	   && h->plt.refcount > 0)
   1740      1.1  christos     {
   1741      1.1  christos       /* Make sure this symbol is output as a dynamic symbol.
   1742      1.1  christos 	 Undefined weak syms won't yet be marked as dynamic.  */
   1743      1.1  christos       if (h->dynindx == -1
   1744      1.1  christos 	  && !h->forced_local)
   1745      1.1  christos 	{
   1746      1.1  christos 	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1747      1.1  christos 	    return FALSE;
   1748      1.1  christos 	}
   1749      1.1  christos 
   1750      1.1  christos       if (info->shared
   1751      1.1  christos 	  || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
   1752      1.1  christos 	{
   1753      1.1  christos 	  asection *s = htab->elf.splt;
   1754      1.1  christos 
   1755      1.1  christos 	  /* If this is the first .plt entry, make room for the special
   1756      1.1  christos 	     first entry.  */
   1757      1.1  christos 	  if (s->size == 0)
   1758      1.1  christos 	    s->size += PLT_FIRST_ENTRY_SIZE;
   1759      1.1  christos 
   1760      1.1  christos 	  h->plt.offset = s->size;
   1761      1.1  christos 
   1762      1.1  christos 	  /* If this symbol is not defined in a regular file, and we are
   1763      1.1  christos 	     not generating a shared library, then set the symbol to this
   1764      1.1  christos 	     location in the .plt.  This is required to make function
   1765      1.1  christos 	     pointers compare as equal between the normal executable and
   1766      1.1  christos 	     the shared library.  */
   1767      1.1  christos 	  if (! info->shared
   1768      1.1  christos 	      && !h->def_regular)
   1769      1.1  christos 	    {
   1770      1.1  christos 	      h->root.u.def.section = s;
   1771      1.1  christos 	      h->root.u.def.value = h->plt.offset;
   1772      1.1  christos 	    }
   1773      1.1  christos 
   1774      1.1  christos 	  /* Make room for this entry.  */
   1775      1.1  christos 	  s->size += PLT_ENTRY_SIZE;
   1776      1.1  christos 
   1777      1.1  christos 	  /* We also need to make an entry in the .got.plt section, which
   1778      1.1  christos 	     will be placed in the .got section by the linker script.  */
   1779      1.1  christos 	  htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
   1780      1.1  christos 
   1781      1.1  christos 	  /* We also need to make an entry in the .rela.plt section.  */
   1782      1.1  christos 	  htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
   1783      1.1  christos 	}
   1784      1.1  christos       else
   1785      1.1  christos 	{
   1786      1.1  christos 	  h->plt.offset = (bfd_vma) -1;
   1787      1.1  christos 	  h->needs_plt = 0;
   1788      1.1  christos 	  elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
   1789      1.1  christos 	}
   1790      1.1  christos     }
   1791      1.1  christos   else
   1792      1.1  christos     {
   1793      1.1  christos       h->plt.offset = (bfd_vma) -1;
   1794      1.1  christos       h->needs_plt = 0;
   1795      1.1  christos       elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
   1796      1.1  christos     }
   1797      1.1  christos 
   1798      1.1  christos   /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
   1799      1.1  christos      the binary, we can optimize a bit. IE64 and GOTIE64 get converted
   1800      1.1  christos      to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
   1801      1.1  christos      we can save the dynamic TLS relocation.  */
   1802      1.1  christos   if (h->got.refcount > 0
   1803      1.1  christos       && !info->shared
   1804      1.1  christos       && h->dynindx == -1
   1805      1.1  christos       && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
   1806      1.1  christos     {
   1807      1.1  christos       if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
   1808      1.1  christos 	/* For the GOTIE access without a literal pool entry the offset has
   1809      1.1  christos 	   to be stored somewhere. The immediate value in the instruction
   1810      1.1  christos 	   is not bit enough so the value is stored in the got.  */
   1811      1.1  christos 	{
   1812      1.1  christos 	  h->got.offset = htab->elf.sgot->size;
   1813      1.1  christos 	  htab->elf.sgot->size += GOT_ENTRY_SIZE;
   1814      1.1  christos 	}
   1815      1.1  christos       else
   1816      1.1  christos 	h->got.offset = (bfd_vma) -1;
   1817      1.1  christos     }
   1818      1.1  christos   else if (h->got.refcount > 0)
   1819      1.1  christos     {
   1820      1.1  christos       asection *s;
   1821      1.1  christos       bfd_boolean dyn;
   1822      1.1  christos       int tls_type = elf_s390_hash_entry(h)->tls_type;
   1823      1.1  christos 
   1824      1.1  christos       /* Make sure this symbol is output as a dynamic symbol.
   1825      1.1  christos 	 Undefined weak syms won't yet be marked as dynamic.  */
   1826      1.1  christos       if (h->dynindx == -1
   1827      1.1  christos 	  && !h->forced_local)
   1828      1.1  christos 	{
   1829      1.1  christos 	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1830      1.1  christos 	    return FALSE;
   1831      1.1  christos 	}
   1832      1.1  christos 
   1833      1.1  christos       s = htab->elf.sgot;
   1834      1.1  christos       h->got.offset = s->size;
   1835      1.1  christos       s->size += GOT_ENTRY_SIZE;
   1836      1.1  christos       /* R_390_TLS_GD64 needs 2 consecutive GOT slots.  */
   1837      1.1  christos       if (tls_type == GOT_TLS_GD)
   1838      1.1  christos 	s->size += GOT_ENTRY_SIZE;
   1839      1.1  christos       dyn = htab->elf.dynamic_sections_created;
   1840      1.1  christos       /* R_390_TLS_IE64 needs one dynamic relocation,
   1841      1.1  christos 	 R_390_TLS_GD64 needs one if local symbol and two if global.  */
   1842      1.1  christos       if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
   1843      1.1  christos 	  || tls_type >= GOT_TLS_IE)
   1844      1.1  christos 	htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
   1845      1.1  christos       else if (tls_type == GOT_TLS_GD)
   1846      1.1  christos 	htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
   1847      1.1  christos       else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
   1848      1.1  christos 		|| h->root.type != bfd_link_hash_undefweak)
   1849      1.1  christos 	       && (info->shared
   1850      1.1  christos 		   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
   1851      1.1  christos 	htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
   1852      1.1  christos     }
   1853      1.1  christos   else
   1854      1.1  christos     h->got.offset = (bfd_vma) -1;
   1855      1.1  christos 
   1856      1.1  christos   if (eh->dyn_relocs == NULL)
   1857      1.1  christos     return TRUE;
   1858      1.1  christos 
   1859      1.1  christos   /* In the shared -Bsymbolic case, discard space allocated for
   1860      1.1  christos      dynamic pc-relative relocs against symbols which turn out to be
   1861      1.1  christos      defined in regular objects.  For the normal shared case, discard
   1862      1.1  christos      space for pc-relative relocs that have become local due to symbol
   1863      1.1  christos      visibility changes.  */
   1864      1.1  christos 
   1865      1.1  christos   if (info->shared)
   1866      1.1  christos     {
   1867      1.1  christos       if (SYMBOL_CALLS_LOCAL (info, h))
   1868      1.1  christos 	{
   1869      1.1  christos 	  struct elf_dyn_relocs **pp;
   1870      1.1  christos 
   1871      1.1  christos 	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
   1872      1.1  christos 	    {
   1873      1.1  christos 	      p->count -= p->pc_count;
   1874      1.1  christos 	      p->pc_count = 0;
   1875      1.1  christos 	      if (p->count == 0)
   1876      1.1  christos 		*pp = p->next;
   1877      1.1  christos 	      else
   1878      1.1  christos 		pp = &p->next;
   1879      1.1  christos 	    }
   1880      1.1  christos 	}
   1881      1.1  christos 
   1882      1.1  christos       /* Also discard relocs on undefined weak syms with non-default
   1883      1.1  christos 	 visibility.  */
   1884      1.1  christos       if (eh->dyn_relocs != NULL
   1885      1.1  christos 	  && h->root.type == bfd_link_hash_undefweak)
   1886      1.1  christos 	{
   1887      1.1  christos 	  if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
   1888      1.1  christos 	    eh->dyn_relocs = NULL;
   1889      1.1  christos 
   1890      1.1  christos 	  /* Make sure undefined weak symbols are output as a dynamic
   1891      1.1  christos 	     symbol in PIEs.  */
   1892      1.1  christos 	  else if (h->dynindx == -1
   1893      1.1  christos 		   && !h->forced_local)
   1894      1.1  christos 	    {
   1895      1.1  christos 	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1896      1.1  christos 		return FALSE;
   1897      1.1  christos 	    }
   1898      1.1  christos 	}
   1899      1.1  christos     }
   1900      1.1  christos   else if (ELIMINATE_COPY_RELOCS)
   1901      1.1  christos     {
   1902      1.1  christos       /* For the non-shared case, discard space for relocs against
   1903      1.1  christos 	 symbols which turn out to need copy relocs or are not
   1904      1.1  christos 	 dynamic.  */
   1905      1.1  christos 
   1906      1.1  christos       if (!h->non_got_ref
   1907      1.1  christos 	  && ((h->def_dynamic
   1908      1.1  christos 	       && !h->def_regular)
   1909      1.1  christos 	      || (htab->elf.dynamic_sections_created
   1910      1.1  christos 		  && (h->root.type == bfd_link_hash_undefweak
   1911      1.1  christos 		      || h->root.type == bfd_link_hash_undefined))))
   1912      1.1  christos 	{
   1913      1.1  christos 	  /* Make sure this symbol is output as a dynamic symbol.
   1914      1.1  christos 	     Undefined weak syms won't yet be marked as dynamic.  */
   1915      1.1  christos 	  if (h->dynindx == -1
   1916      1.1  christos 	      && !h->forced_local)
   1917      1.1  christos 	    {
   1918      1.1  christos 	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
   1919      1.1  christos 		return FALSE;
   1920      1.1  christos 	    }
   1921      1.1  christos 
   1922      1.1  christos 	  /* If that succeeded, we know we'll be keeping all the
   1923      1.1  christos 	     relocs.  */
   1924      1.1  christos 	  if (h->dynindx != -1)
   1925      1.1  christos 	    goto keep;
   1926      1.1  christos 	}
   1927      1.1  christos 
   1928      1.1  christos       eh->dyn_relocs = NULL;
   1929      1.1  christos 
   1930      1.1  christos     keep: ;
   1931      1.1  christos     }
   1932      1.1  christos 
   1933      1.1  christos   /* Finally, allocate space.  */
   1934      1.1  christos   for (p = eh->dyn_relocs; p != NULL; p = p->next)
   1935      1.1  christos     {
   1936      1.1  christos       asection *sreloc = elf_section_data (p->sec)->sreloc;
   1937      1.1  christos       sreloc->size += p->count * sizeof (Elf64_External_Rela);
   1938      1.1  christos     }
   1939      1.1  christos 
   1940      1.1  christos   return TRUE;
   1941      1.1  christos }
   1942      1.1  christos 
   1943      1.1  christos /* Find any dynamic relocs that apply to read-only sections.  */
   1944      1.1  christos 
   1945      1.1  christos static bfd_boolean
   1946      1.1  christos readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
   1947      1.1  christos {
   1948      1.1  christos   struct elf_s390_link_hash_entry *eh;
   1949      1.1  christos   struct elf_dyn_relocs *p;
   1950      1.1  christos 
   1951      1.1  christos   eh = (struct elf_s390_link_hash_entry *) h;
   1952      1.1  christos   for (p = eh->dyn_relocs; p != NULL; p = p->next)
   1953      1.1  christos     {
   1954      1.1  christos       asection *s = p->sec->output_section;
   1955      1.1  christos 
   1956      1.1  christos       if (s != NULL && (s->flags & SEC_READONLY) != 0)
   1957      1.1  christos 	{
   1958      1.1  christos 	  struct bfd_link_info *info = (struct bfd_link_info *) inf;
   1959      1.1  christos 
   1960      1.1  christos 	  info->flags |= DF_TEXTREL;
   1961      1.1  christos 
   1962      1.1  christos 	  /* Not an error, just cut short the traversal.  */
   1963      1.1  christos 	  return FALSE;
   1964      1.1  christos 	}
   1965      1.1  christos     }
   1966      1.1  christos   return TRUE;
   1967      1.1  christos }
   1968      1.1  christos 
   1969      1.1  christos /* Set the sizes of the dynamic sections.  */
   1970      1.1  christos 
   1971      1.1  christos static bfd_boolean
   1972      1.1  christos elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
   1973      1.1  christos 				struct bfd_link_info *info)
   1974      1.1  christos {
   1975      1.1  christos   struct elf_s390_link_hash_table *htab;
   1976      1.1  christos   bfd *dynobj;
   1977      1.1  christos   asection *s;
   1978      1.1  christos   bfd_boolean relocs;
   1979      1.1  christos   bfd *ibfd;
   1980      1.1  christos 
   1981      1.1  christos   htab = elf_s390_hash_table (info);
   1982      1.1  christos   if (htab == NULL)
   1983      1.1  christos     return FALSE;
   1984      1.1  christos 
   1985      1.1  christos   dynobj = htab->elf.dynobj;
   1986      1.1  christos   if (dynobj == NULL)
   1987      1.1  christos     abort ();
   1988      1.1  christos 
   1989      1.1  christos   if (htab->elf.dynamic_sections_created)
   1990      1.1  christos     {
   1991      1.1  christos       /* Set the contents of the .interp section to the interpreter.  */
   1992      1.1  christos       if (info->executable)
   1993      1.1  christos 	{
   1994      1.1  christos 	  s = bfd_get_linker_section (dynobj, ".interp");
   1995      1.1  christos 	  if (s == NULL)
   1996      1.1  christos 	    abort ();
   1997      1.1  christos 	  s->size = sizeof ELF_DYNAMIC_INTERPRETER;
   1998      1.1  christos 	  s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
   1999      1.1  christos 	}
   2000      1.1  christos     }
   2001      1.1  christos 
   2002      1.1  christos   /* Set up .got offsets for local syms, and space for local dynamic
   2003      1.1  christos      relocs.  */
   2004  1.1.1.2  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   2005      1.1  christos     {
   2006      1.1  christos       bfd_signed_vma *local_got;
   2007      1.1  christos       bfd_signed_vma *end_local_got;
   2008      1.1  christos       char *local_tls_type;
   2009      1.1  christos       bfd_size_type locsymcount;
   2010      1.1  christos       Elf_Internal_Shdr *symtab_hdr;
   2011      1.1  christos       asection *srela;
   2012      1.1  christos       struct plt_entry *local_plt;
   2013      1.1  christos       unsigned int i;
   2014      1.1  christos 
   2015      1.1  christos       if (! is_s390_elf (ibfd))
   2016      1.1  christos 	continue;
   2017      1.1  christos 
   2018      1.1  christos       for (s = ibfd->sections; s != NULL; s = s->next)
   2019      1.1  christos 	{
   2020      1.1  christos 	  struct elf_dyn_relocs *p;
   2021      1.1  christos 
   2022      1.1  christos 	  for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
   2023      1.1  christos 	    {
   2024      1.1  christos 	      if (!bfd_is_abs_section (p->sec)
   2025      1.1  christos 		  && bfd_is_abs_section (p->sec->output_section))
   2026      1.1  christos 		{
   2027      1.1  christos 		  /* Input section has been discarded, either because
   2028      1.1  christos 		     it is a copy of a linkonce section or due to
   2029      1.1  christos 		     linker script /DISCARD/, so we'll be discarding
   2030      1.1  christos 		     the relocs too.  */
   2031      1.1  christos 		}
   2032      1.1  christos 	      else if (p->count != 0)
   2033      1.1  christos 		{
   2034      1.1  christos 		  srela = elf_section_data (p->sec)->sreloc;
   2035      1.1  christos 		  srela->size += p->count * sizeof (Elf64_External_Rela);
   2036      1.1  christos 		  if ((p->sec->output_section->flags & SEC_READONLY) != 0)
   2037      1.1  christos 		    info->flags |= DF_TEXTREL;
   2038      1.1  christos 		}
   2039      1.1  christos 	    }
   2040      1.1  christos 	}
   2041      1.1  christos 
   2042      1.1  christos       local_got = elf_local_got_refcounts (ibfd);
   2043      1.1  christos       if (!local_got)
   2044      1.1  christos 	continue;
   2045      1.1  christos 
   2046      1.1  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   2047      1.1  christos       locsymcount = symtab_hdr->sh_info;
   2048      1.1  christos       end_local_got = local_got + locsymcount;
   2049      1.1  christos       local_tls_type = elf_s390_local_got_tls_type (ibfd);
   2050      1.1  christos       s = htab->elf.sgot;
   2051      1.1  christos       srela = htab->elf.srelgot;
   2052      1.1  christos       for (; local_got < end_local_got; ++local_got, ++local_tls_type)
   2053      1.1  christos 	{
   2054      1.1  christos 	  if (*local_got > 0)
   2055      1.1  christos 	    {
   2056      1.1  christos 	      *local_got = s->size;
   2057      1.1  christos 	      s->size += GOT_ENTRY_SIZE;
   2058      1.1  christos 	      if (*local_tls_type == GOT_TLS_GD)
   2059      1.1  christos 		s->size += GOT_ENTRY_SIZE;
   2060      1.1  christos 	      if (info->shared)
   2061      1.1  christos 		srela->size += sizeof (Elf64_External_Rela);
   2062      1.1  christos 	    }
   2063      1.1  christos 	  else
   2064      1.1  christos 	    *local_got = (bfd_vma) -1;
   2065      1.1  christos 	}
   2066      1.1  christos 
   2067      1.1  christos       local_plt = elf_s390_local_plt (ibfd);
   2068      1.1  christos       for (i = 0; i < symtab_hdr->sh_info; i++)
   2069      1.1  christos 	{
   2070      1.1  christos 	  if (local_plt[i].plt.refcount > 0)
   2071      1.1  christos 	    {
   2072      1.1  christos 	      local_plt[i].plt.offset = htab->elf.iplt->size;
   2073      1.1  christos 	      htab->elf.iplt->size += PLT_ENTRY_SIZE;
   2074      1.1  christos 	      htab->elf.igotplt->size += GOT_ENTRY_SIZE;
   2075      1.1  christos 	      htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
   2076      1.1  christos 	    }
   2077      1.1  christos 	  else
   2078      1.1  christos 	    local_plt[i].plt.offset = (bfd_vma) -1;
   2079      1.1  christos 	}
   2080      1.1  christos     }
   2081      1.1  christos 
   2082      1.1  christos   if (htab->tls_ldm_got.refcount > 0)
   2083      1.1  christos     {
   2084      1.1  christos       /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
   2085      1.1  christos 	 relocs.  */
   2086      1.1  christos       htab->tls_ldm_got.offset = htab->elf.sgot->size;
   2087      1.1  christos       htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
   2088      1.1  christos       htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
   2089      1.1  christos     }
   2090      1.1  christos   else
   2091      1.1  christos     htab->tls_ldm_got.offset = -1;
   2092      1.1  christos 
   2093      1.1  christos   /* Allocate global sym .plt and .got entries, and space for global
   2094      1.1  christos      sym dynamic relocs.  */
   2095      1.1  christos   elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
   2096      1.1  christos 
   2097      1.1  christos   /* We now have determined the sizes of the various dynamic sections.
   2098      1.1  christos      Allocate memory for them.  */
   2099      1.1  christos   relocs = FALSE;
   2100      1.1  christos   for (s = dynobj->sections; s != NULL; s = s->next)
   2101      1.1  christos     {
   2102      1.1  christos       if ((s->flags & SEC_LINKER_CREATED) == 0)
   2103      1.1  christos 	continue;
   2104      1.1  christos 
   2105      1.1  christos       if (s == htab->elf.splt
   2106      1.1  christos 	  || s == htab->elf.sgot
   2107      1.1  christos 	  || s == htab->elf.sgotplt
   2108      1.1  christos 	  || s == htab->sdynbss
   2109      1.1  christos 	  || s == htab->elf.iplt
   2110      1.1  christos 	  || s == htab->elf.igotplt
   2111      1.1  christos 	  || s == htab->irelifunc)
   2112      1.1  christos 	{
   2113      1.1  christos 	  /* Strip this section if we don't need it; see the
   2114      1.1  christos 	     comment below.  */
   2115      1.1  christos 	}
   2116      1.1  christos       else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
   2117      1.1  christos 	{
   2118      1.1  christos 	  if (s->size != 0 && s != htab->elf.srelplt)
   2119      1.1  christos 	    relocs = TRUE;
   2120      1.1  christos 
   2121      1.1  christos 	  /* We use the reloc_count field as a counter if we need
   2122      1.1  christos 	     to copy relocs into the output file.  */
   2123      1.1  christos 	  s->reloc_count = 0;
   2124      1.1  christos 	}
   2125      1.1  christos       else
   2126      1.1  christos 	{
   2127      1.1  christos 	  /* It's not one of our sections, so don't allocate space.  */
   2128      1.1  christos 	  continue;
   2129      1.1  christos 	}
   2130      1.1  christos 
   2131      1.1  christos       if (s->size == 0)
   2132      1.1  christos 	{
   2133      1.1  christos 	  /* If we don't need this section, strip it from the
   2134      1.1  christos 	     output file.  This is to handle .rela.bss and
   2135      1.1  christos 	     .rela.plt.  We must create it in
   2136      1.1  christos 	     create_dynamic_sections, because it must be created
   2137      1.1  christos 	     before the linker maps input sections to output
   2138      1.1  christos 	     sections.  The linker does that before
   2139      1.1  christos 	     adjust_dynamic_symbol is called, and it is that
   2140      1.1  christos 	     function which decides whether anything needs to go
   2141      1.1  christos 	     into these sections.  */
   2142      1.1  christos 
   2143      1.1  christos 	  s->flags |= SEC_EXCLUDE;
   2144      1.1  christos 	  continue;
   2145      1.1  christos 	}
   2146      1.1  christos 
   2147      1.1  christos       if ((s->flags & SEC_HAS_CONTENTS) == 0)
   2148      1.1  christos 	continue;
   2149      1.1  christos 
   2150      1.1  christos       /* Allocate memory for the section contents.  We use bfd_zalloc
   2151      1.1  christos 	 here in case unused entries are not reclaimed before the
   2152      1.1  christos 	 section's contents are written out.  This should not happen,
   2153      1.1  christos 	 but this way if it does, we get a R_390_NONE reloc instead
   2154      1.1  christos 	 of garbage.  */
   2155      1.1  christos       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
   2156      1.1  christos       if (s->contents == NULL)
   2157      1.1  christos 	return FALSE;
   2158      1.1  christos     }
   2159      1.1  christos 
   2160      1.1  christos   if (htab->elf.dynamic_sections_created)
   2161      1.1  christos     {
   2162      1.1  christos       /* Add some entries to the .dynamic section.  We fill in the
   2163      1.1  christos 	 values later, in elf_s390_finish_dynamic_sections, but we
   2164      1.1  christos 	 must add the entries now so that we get the correct size for
   2165      1.1  christos 	 the .dynamic section.  The DT_DEBUG entry is filled in by the
   2166      1.1  christos 	 dynamic linker and used by the debugger.  */
   2167      1.1  christos #define add_dynamic_entry(TAG, VAL) \
   2168      1.1  christos   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
   2169      1.1  christos 
   2170      1.1  christos       if (info->executable)
   2171      1.1  christos 	{
   2172      1.1  christos 	  if (!add_dynamic_entry (DT_DEBUG, 0))
   2173      1.1  christos 	    return FALSE;
   2174      1.1  christos 	}
   2175      1.1  christos 
   2176      1.1  christos       if (htab->elf.splt->size != 0)
   2177      1.1  christos 	{
   2178      1.1  christos 	  if (!add_dynamic_entry (DT_PLTGOT, 0)
   2179      1.1  christos 	      || !add_dynamic_entry (DT_PLTRELSZ, 0)
   2180      1.1  christos 	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
   2181      1.1  christos 	      || !add_dynamic_entry (DT_JMPREL, 0))
   2182      1.1  christos 	    return FALSE;
   2183      1.1  christos 	}
   2184      1.1  christos 
   2185      1.1  christos       if (relocs)
   2186      1.1  christos 	{
   2187      1.1  christos 	  if (!add_dynamic_entry (DT_RELA, 0)
   2188      1.1  christos 	      || !add_dynamic_entry (DT_RELASZ, 0)
   2189      1.1  christos 	      || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
   2190      1.1  christos 	    return FALSE;
   2191      1.1  christos 
   2192      1.1  christos 	  /* If any dynamic relocs apply to a read-only section,
   2193      1.1  christos 	     then we need a DT_TEXTREL entry.  */
   2194      1.1  christos 	  if ((info->flags & DF_TEXTREL) == 0)
   2195      1.1  christos 	    elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
   2196      1.1  christos 				    info);
   2197      1.1  christos 
   2198      1.1  christos 	  if ((info->flags & DF_TEXTREL) != 0)
   2199      1.1  christos 	    {
   2200      1.1  christos 	      if (!add_dynamic_entry (DT_TEXTREL, 0))
   2201      1.1  christos 		return FALSE;
   2202      1.1  christos 	    }
   2203      1.1  christos 	}
   2204      1.1  christos     }
   2205      1.1  christos #undef add_dynamic_entry
   2206      1.1  christos 
   2207      1.1  christos   return TRUE;
   2208      1.1  christos }
   2209      1.1  christos 
   2210      1.1  christos /* Return the base VMA address which should be subtracted from real addresses
   2211      1.1  christos    when resolving @dtpoff relocation.
   2212      1.1  christos    This is PT_TLS segment p_vaddr.  */
   2213      1.1  christos 
   2214      1.1  christos static bfd_vma
   2215      1.1  christos dtpoff_base (struct bfd_link_info *info)
   2216      1.1  christos {
   2217      1.1  christos   /* If tls_sec is NULL, we should have signalled an error already.  */
   2218      1.1  christos   if (elf_hash_table (info)->tls_sec == NULL)
   2219      1.1  christos     return 0;
   2220      1.1  christos   return elf_hash_table (info)->tls_sec->vma;
   2221      1.1  christos }
   2222      1.1  christos 
   2223      1.1  christos /* Return the relocation value for @tpoff relocation
   2224      1.1  christos    if STT_TLS virtual address is ADDRESS.  */
   2225      1.1  christos 
   2226      1.1  christos static bfd_vma
   2227      1.1  christos tpoff (struct bfd_link_info *info, bfd_vma address)
   2228      1.1  christos {
   2229      1.1  christos   struct elf_link_hash_table *htab = elf_hash_table (info);
   2230      1.1  christos 
   2231      1.1  christos   /* If tls_sec is NULL, we should have signalled an error already.  */
   2232      1.1  christos   if (htab->tls_sec == NULL)
   2233      1.1  christos     return 0;
   2234      1.1  christos   return htab->tls_size + htab->tls_sec->vma - address;
   2235      1.1  christos }
   2236      1.1  christos 
   2237      1.1  christos /* Complain if TLS instruction relocation is against an invalid
   2238      1.1  christos    instruction.  */
   2239      1.1  christos 
   2240      1.1  christos static void
   2241      1.1  christos invalid_tls_insn (bfd *input_bfd,
   2242      1.1  christos 		  asection *input_section,
   2243      1.1  christos 		  Elf_Internal_Rela *rel)
   2244      1.1  christos {
   2245      1.1  christos   reloc_howto_type *howto;
   2246      1.1  christos 
   2247      1.1  christos   howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
   2248      1.1  christos   (*_bfd_error_handler)
   2249      1.1  christos     (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
   2250      1.1  christos      input_bfd,
   2251      1.1  christos      input_section,
   2252      1.1  christos      (long) rel->r_offset,
   2253      1.1  christos      howto->name);
   2254      1.1  christos   bfd_set_error (bfd_error_bad_value);
   2255      1.1  christos }
   2256      1.1  christos 
   2257      1.1  christos /* Relocate a 390 ELF section.  */
   2258      1.1  christos 
   2259      1.1  christos static bfd_boolean
   2260      1.1  christos elf_s390_relocate_section (bfd *output_bfd,
   2261      1.1  christos 			   struct bfd_link_info *info,
   2262      1.1  christos 			   bfd *input_bfd,
   2263      1.1  christos 			   asection *input_section,
   2264      1.1  christos 			   bfd_byte *contents,
   2265      1.1  christos 			   Elf_Internal_Rela *relocs,
   2266      1.1  christos 			   Elf_Internal_Sym *local_syms,
   2267      1.1  christos 			   asection **local_sections)
   2268      1.1  christos {
   2269      1.1  christos   struct elf_s390_link_hash_table *htab;
   2270      1.1  christos   Elf_Internal_Shdr *symtab_hdr;
   2271      1.1  christos   struct elf_link_hash_entry **sym_hashes;
   2272      1.1  christos   bfd_vma *local_got_offsets;
   2273      1.1  christos   Elf_Internal_Rela *rel;
   2274      1.1  christos   Elf_Internal_Rela *relend;
   2275      1.1  christos 
   2276      1.1  christos   BFD_ASSERT (is_s390_elf (input_bfd));
   2277      1.1  christos 
   2278      1.1  christos   htab = elf_s390_hash_table (info);
   2279      1.1  christos   if (htab == NULL)
   2280      1.1  christos     return FALSE;
   2281      1.1  christos 
   2282      1.1  christos   symtab_hdr = &elf_symtab_hdr (input_bfd);
   2283      1.1  christos   sym_hashes = elf_sym_hashes (input_bfd);
   2284      1.1  christos   local_got_offsets = elf_local_got_offsets (input_bfd);
   2285      1.1  christos 
   2286      1.1  christos   rel = relocs;
   2287      1.1  christos   relend = relocs + input_section->reloc_count;
   2288      1.1  christos   for (; rel < relend; rel++)
   2289      1.1  christos     {
   2290      1.1  christos       unsigned int r_type;
   2291      1.1  christos       reloc_howto_type *howto;
   2292      1.1  christos       unsigned long r_symndx;
   2293      1.1  christos       struct elf_link_hash_entry *h;
   2294      1.1  christos       Elf_Internal_Sym *sym;
   2295      1.1  christos       asection *sec;
   2296      1.1  christos       bfd_vma off;
   2297      1.1  christos       bfd_vma relocation;
   2298      1.1  christos       bfd_boolean unresolved_reloc;
   2299      1.1  christos       bfd_reloc_status_type r;
   2300      1.1  christos       int tls_type;
   2301      1.1  christos       asection *base_got = htab->elf.sgot;
   2302      1.1  christos 
   2303      1.1  christos       r_type = ELF64_R_TYPE (rel->r_info);
   2304      1.1  christos       if (r_type == (int) R_390_GNU_VTINHERIT
   2305      1.1  christos 	  || r_type == (int) R_390_GNU_VTENTRY)
   2306      1.1  christos 	continue;
   2307      1.1  christos       if (r_type >= (int) R_390_max)
   2308      1.1  christos 	{
   2309      1.1  christos 	  bfd_set_error (bfd_error_bad_value);
   2310      1.1  christos 	  return FALSE;
   2311      1.1  christos 	}
   2312      1.1  christos 
   2313      1.1  christos       howto = elf_howto_table + r_type;
   2314      1.1  christos       r_symndx = ELF64_R_SYM (rel->r_info);
   2315      1.1  christos 
   2316      1.1  christos       h = NULL;
   2317      1.1  christos       sym = NULL;
   2318      1.1  christos       sec = NULL;
   2319      1.1  christos       unresolved_reloc = FALSE;
   2320      1.1  christos       if (r_symndx < symtab_hdr->sh_info)
   2321      1.1  christos 	{
   2322      1.1  christos 	  sym = local_syms + r_symndx;
   2323      1.1  christos 	  sec = local_sections[r_symndx];
   2324      1.1  christos 
   2325      1.1  christos 	  if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
   2326      1.1  christos 	    {
   2327      1.1  christos 	      struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
   2328      1.1  christos 	      if (local_plt == NULL)
   2329      1.1  christos 		return FALSE;
   2330      1.1  christos 
   2331      1.1  christos 	      /* Address of the PLT slot.  */
   2332      1.1  christos 	      relocation = (htab->elf.iplt->output_section->vma
   2333      1.1  christos 			    + htab->elf.iplt->output_offset
   2334      1.1  christos 			    + local_plt[r_symndx].plt.offset);
   2335      1.1  christos 
   2336      1.1  christos 	      switch (r_type)
   2337      1.1  christos 		{
   2338      1.1  christos 		case R_390_PLTOFF16:
   2339      1.1  christos 		case R_390_PLTOFF32:
   2340      1.1  christos 		case R_390_PLTOFF64:
   2341      1.1  christos 		  relocation -= htab->elf.sgot->output_section->vma;
   2342      1.1  christos 		  break;
   2343      1.1  christos 		case R_390_GOTPLT12:
   2344      1.1  christos 		case R_390_GOTPLT16:
   2345      1.1  christos 		case R_390_GOTPLT20:
   2346      1.1  christos 		case R_390_GOTPLT32:
   2347      1.1  christos 		case R_390_GOTPLT64:
   2348      1.1  christos 		case R_390_GOTPLTENT:
   2349      1.1  christos 		case R_390_GOT12:
   2350      1.1  christos 		case R_390_GOT16:
   2351      1.1  christos 		case R_390_GOT20:
   2352      1.1  christos 		case R_390_GOT32:
   2353      1.1  christos 		case R_390_GOT64:
   2354      1.1  christos 		case R_390_GOTENT:
   2355      1.1  christos 		  {
   2356      1.1  christos 		    /* Write the PLT slot address into the GOT slot.  */
   2357      1.1  christos 		    bfd_put_64 (output_bfd, relocation,
   2358      1.1  christos 				htab->elf.sgot->contents +
   2359      1.1  christos 				local_got_offsets[r_symndx]);
   2360      1.1  christos 		    relocation = (local_got_offsets[r_symndx] +
   2361      1.1  christos 				  htab->elf.sgot->output_offset);
   2362      1.1  christos 
   2363      1.1  christos 		    if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
   2364      1.1  christos 		      relocation += htab->elf.sgot->output_section->vma;
   2365      1.1  christos 		    break;
   2366      1.1  christos 		  }
   2367      1.1  christos 		default:
   2368      1.1  christos 		  break;
   2369      1.1  christos 		}
   2370      1.1  christos 	      /* The output section is needed later in
   2371      1.1  christos 		 finish_dynamic_section when creating the dynamic
   2372      1.1  christos 		 relocation.  */
   2373      1.1  christos 	      local_plt[r_symndx].sec = sec;
   2374      1.1  christos 	      goto do_relocation;
   2375      1.1  christos 	    }
   2376      1.1  christos 	  else
   2377      1.1  christos 	    relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
   2378      1.1  christos 	}
   2379      1.1  christos       else
   2380      1.1  christos 	{
   2381      1.1  christos 	  bfd_boolean warned ATTRIBUTE_UNUSED;
   2382      1.1  christos 	  bfd_boolean ignored ATTRIBUTE_UNUSED;
   2383      1.1  christos 
   2384      1.1  christos 	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
   2385      1.1  christos 				   r_symndx, symtab_hdr, sym_hashes,
   2386      1.1  christos 				   h, sec, relocation,
   2387      1.1  christos 				   unresolved_reloc, warned, ignored);
   2388      1.1  christos 	}
   2389      1.1  christos 
   2390      1.1  christos       if (sec != NULL && discarded_section (sec))
   2391      1.1  christos 	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
   2392      1.1  christos 					 rel, 1, relend, howto, 0, contents);
   2393      1.1  christos 
   2394      1.1  christos       if (info->relocatable)
   2395      1.1  christos 	continue;
   2396      1.1  christos 
   2397      1.1  christos       switch (r_type)
   2398      1.1  christos 	{
   2399      1.1  christos 	case R_390_GOTPLT12:
   2400      1.1  christos 	case R_390_GOTPLT16:
   2401      1.1  christos 	case R_390_GOTPLT20:
   2402      1.1  christos 	case R_390_GOTPLT32:
   2403      1.1  christos 	case R_390_GOTPLT64:
   2404      1.1  christos 	case R_390_GOTPLTENT:
   2405      1.1  christos 	  /* There are three cases for a GOTPLT relocation. 1) The
   2406      1.1  christos 	     relocation is against the jump slot entry of a plt that
   2407      1.1  christos 	     will get emitted to the output file. 2) The relocation
   2408      1.1  christos 	     is against the jump slot of a plt entry that has been
   2409      1.1  christos 	     removed. elf_s390_adjust_gotplt has created a GOT entry
   2410      1.1  christos 	     as replacement. 3) The relocation is against a local symbol.
   2411      1.1  christos 	     Cases 2) and 3) are the same as the GOT relocation code
   2412      1.1  christos 	     so we just have to test for case 1 and fall through for
   2413      1.1  christos 	     the other two.  */
   2414      1.1  christos 	  if (h != NULL && h->plt.offset != (bfd_vma) -1)
   2415      1.1  christos 	    {
   2416      1.1  christos 	      bfd_vma plt_index;
   2417      1.1  christos 
   2418      1.1  christos 	      if (s390_is_ifunc_symbol_p (h))
   2419      1.1  christos 		{
   2420      1.1  christos 		  plt_index = h->plt.offset / PLT_ENTRY_SIZE;
   2421      1.1  christos 		  relocation = (plt_index * GOT_ENTRY_SIZE +
   2422      1.1  christos 				htab->elf.igotplt->output_offset);
   2423      1.1  christos 		  if (r_type == R_390_GOTPLTENT)
   2424      1.1  christos 		    relocation += htab->elf.igotplt->output_section->vma;
   2425      1.1  christos 		}
   2426      1.1  christos 	      else
   2427      1.1  christos 		{
   2428      1.1  christos 		  /* Calc. index no.
   2429      1.1  christos 		     Current offset - size first entry / entry size.  */
   2430      1.1  christos 		  plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
   2431      1.1  christos 		    PLT_ENTRY_SIZE;
   2432      1.1  christos 
   2433      1.1  christos 		  /* Offset in GOT is PLT index plus GOT headers(3)
   2434      1.1  christos 		     times 4, addr & GOT addr.  */
   2435      1.1  christos 		  relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
   2436      1.1  christos 		  if (r_type == R_390_GOTPLTENT)
   2437      1.1  christos 		    relocation += htab->elf.sgot->output_section->vma;
   2438      1.1  christos 		}
   2439      1.1  christos 	      unresolved_reloc = FALSE;
   2440      1.1  christos 	      break;
   2441      1.1  christos 	    }
   2442      1.1  christos 	  /* Fall through.  */
   2443      1.1  christos 
   2444      1.1  christos 	case R_390_GOT12:
   2445      1.1  christos 	case R_390_GOT16:
   2446      1.1  christos 	case R_390_GOT20:
   2447      1.1  christos 	case R_390_GOT32:
   2448      1.1  christos 	case R_390_GOT64:
   2449      1.1  christos 	case R_390_GOTENT:
   2450      1.1  christos 	  /* Relocation is to the entry for this symbol in the global
   2451      1.1  christos 	     offset table.  */
   2452      1.1  christos 	  if (base_got == NULL)
   2453      1.1  christos 	    abort ();
   2454      1.1  christos 
   2455      1.1  christos 	  if (h != NULL)
   2456      1.1  christos 	    {
   2457      1.1  christos 	      bfd_boolean dyn;
   2458      1.1  christos 
   2459      1.1  christos 	      off = h->got.offset;
   2460      1.1  christos 	      dyn = htab->elf.dynamic_sections_created;
   2461      1.1  christos 
   2462      1.1  christos 	      if (s390_is_ifunc_symbol_p (h))
   2463      1.1  christos 		{
   2464      1.1  christos 		  BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
   2465      1.1  christos 		  if (off == (bfd_vma)-1)
   2466      1.1  christos 		    {
   2467      1.1  christos 		      /* No explicit GOT usage so redirect to the
   2468      1.1  christos 			 got.iplt slot.  */
   2469      1.1  christos 		      base_got = htab->elf.igotplt;
   2470      1.1  christos 		      off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
   2471      1.1  christos 		    }
   2472      1.1  christos 		  else
   2473      1.1  christos 		    {
   2474      1.1  christos 		      /* Explicit GOT slots must contain the address
   2475      1.1  christos 			 of the PLT slot. This will be handled in
   2476      1.1  christos 			 finish_dynamic_symbol.  */
   2477      1.1  christos 		    }
   2478      1.1  christos 		}
   2479      1.1  christos 	      else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
   2480      1.1  christos 		       || (info->shared
   2481      1.1  christos 			   && SYMBOL_REFERENCES_LOCAL (info, h))
   2482      1.1  christos 		       || (ELF_ST_VISIBILITY (h->other)
   2483      1.1  christos 			   && h->root.type == bfd_link_hash_undefweak))
   2484      1.1  christos 		{
   2485      1.1  christos 		  /* This is actually a static link, or it is a
   2486      1.1  christos 		     -Bsymbolic link and the symbol is defined
   2487      1.1  christos 		     locally, or the symbol was forced to be local
   2488      1.1  christos 		     because of a version file.  We must initialize
   2489      1.1  christos 		     this entry in the global offset table.  Since the
   2490      1.1  christos 		     offset must always be a multiple of 2, we use the
   2491      1.1  christos 		     least significant bit to record whether we have
   2492      1.1  christos 		     initialized it already.
   2493      1.1  christos 
   2494      1.1  christos 		     When doing a dynamic link, we create a .rel.got
   2495      1.1  christos 		     relocation entry to initialize the value.  This
   2496      1.1  christos 		     is done in the finish_dynamic_symbol routine.  */
   2497      1.1  christos 		  if ((off & 1) != 0)
   2498      1.1  christos 		    off &= ~1;
   2499      1.1  christos 		  else
   2500      1.1  christos 		    {
   2501      1.1  christos 		      bfd_put_64 (output_bfd, relocation,
   2502      1.1  christos 				  base_got->contents + off);
   2503      1.1  christos 		      h->got.offset |= 1;
   2504      1.1  christos 		    }
   2505      1.1  christos 
   2506      1.1  christos 		  if ((h->def_regular
   2507      1.1  christos 		       && info->shared
   2508      1.1  christos 		       && SYMBOL_REFERENCES_LOCAL (info, h))
   2509      1.1  christos 		      /* lgrl rx,sym@GOTENT -> larl rx, sym */
   2510      1.1  christos 		      && ((r_type == R_390_GOTENT
   2511      1.1  christos 			   && (bfd_get_16 (input_bfd,
   2512      1.1  christos 					   contents + rel->r_offset - 2)
   2513      1.1  christos 			       & 0xff0f) == 0xc408)
   2514      1.1  christos 			  /* lg rx, sym@GOT(r12) -> larl rx, sym */
   2515      1.1  christos 			  || (r_type == R_390_GOT20
   2516      1.1  christos 			      && (bfd_get_32 (input_bfd,
   2517      1.1  christos 					      contents + rel->r_offset - 2)
   2518      1.1  christos 				  & 0xff00f000) == 0xe300c000
   2519      1.1  christos 			      && bfd_get_8 (input_bfd,
   2520      1.1  christos 					    contents + rel->r_offset + 3) == 0x04)))
   2521      1.1  christos 
   2522      1.1  christos 		    {
   2523      1.1  christos 		      unsigned short new_insn =
   2524      1.1  christos 			(0xc000 | (bfd_get_8 (input_bfd,
   2525      1.1  christos 					      contents + rel->r_offset - 1) & 0xf0));
   2526      1.1  christos 		      bfd_put_16 (output_bfd, new_insn,
   2527      1.1  christos 				  contents + rel->r_offset - 2);
   2528      1.1  christos 		      r_type = R_390_PC32DBL;
   2529      1.1  christos 		      rel->r_addend = 2;
   2530      1.1  christos 		      howto = elf_howto_table + r_type;
   2531      1.1  christos 		      relocation = h->root.u.def.value
   2532      1.1  christos 			+ h->root.u.def.section->output_section->vma
   2533      1.1  christos 			+ h->root.u.def.section->output_offset;
   2534      1.1  christos 		      goto do_relocation;
   2535      1.1  christos 		    }
   2536      1.1  christos 		}
   2537      1.1  christos 	      else
   2538      1.1  christos 		unresolved_reloc = FALSE;
   2539      1.1  christos 	    }
   2540      1.1  christos 	  else
   2541      1.1  christos 	    {
   2542      1.1  christos 	      if (local_got_offsets == NULL)
   2543      1.1  christos 		abort ();
   2544      1.1  christos 
   2545      1.1  christos 	      off = local_got_offsets[r_symndx];
   2546      1.1  christos 
   2547      1.1  christos 	      /* The offset must always be a multiple of 8.  We use
   2548      1.1  christos 		 the least significant bit to record whether we have
   2549      1.1  christos 		 already generated the necessary reloc.  */
   2550      1.1  christos 	      if ((off & 1) != 0)
   2551      1.1  christos 		off &= ~1;
   2552      1.1  christos 	      else
   2553      1.1  christos 		{
   2554      1.1  christos 		  bfd_put_64 (output_bfd, relocation,
   2555      1.1  christos 			      htab->elf.sgot->contents + off);
   2556      1.1  christos 
   2557      1.1  christos 		  if (info->shared)
   2558      1.1  christos 		    {
   2559      1.1  christos 		      asection *s;
   2560      1.1  christos 		      Elf_Internal_Rela outrel;
   2561      1.1  christos 		      bfd_byte *loc;
   2562      1.1  christos 
   2563      1.1  christos 		      s = htab->elf.srelgot;
   2564      1.1  christos 		      if (s == NULL)
   2565      1.1  christos 			abort ();
   2566      1.1  christos 
   2567      1.1  christos 		      outrel.r_offset = (htab->elf.sgot->output_section->vma
   2568      1.1  christos 					 + htab->elf.sgot->output_offset
   2569      1.1  christos 					 + off);
   2570      1.1  christos 		      outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   2571      1.1  christos 		      outrel.r_addend = relocation;
   2572      1.1  christos 		      loc = s->contents;
   2573      1.1  christos 		      loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
   2574      1.1  christos 		      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   2575      1.1  christos 		    }
   2576      1.1  christos 
   2577      1.1  christos 		  local_got_offsets[r_symndx] |= 1;
   2578      1.1  christos 		}
   2579      1.1  christos 	    }
   2580      1.1  christos 
   2581      1.1  christos 	  if (off >= (bfd_vma) -2)
   2582      1.1  christos 	    abort ();
   2583      1.1  christos 
   2584      1.1  christos 	  relocation = base_got->output_offset + off;
   2585      1.1  christos 
   2586      1.1  christos 	  /* For @GOTENT the relocation is against the offset between
   2587      1.1  christos 	     the instruction and the symbols entry in the GOT and not
   2588      1.1  christos 	     between the start of the GOT and the symbols entry. We
   2589      1.1  christos 	     add the vma of the GOT to get the correct value.  */
   2590      1.1  christos 	  if (   r_type == R_390_GOTENT
   2591      1.1  christos 	      || r_type == R_390_GOTPLTENT)
   2592      1.1  christos 	    relocation += base_got->output_section->vma;
   2593      1.1  christos 
   2594      1.1  christos 	  break;
   2595      1.1  christos 
   2596      1.1  christos 	case R_390_GOTOFF16:
   2597      1.1  christos 	case R_390_GOTOFF32:
   2598      1.1  christos 	case R_390_GOTOFF64:
   2599      1.1  christos 	  /* Relocation is relative to the start of the global offset
   2600      1.1  christos 	     table.  */
   2601      1.1  christos 
   2602      1.1  christos 	  /* Note that sgot->output_offset is not involved in this
   2603      1.1  christos 	     calculation.  We always want the start of .got.  If we
   2604      1.1  christos 	     defined _GLOBAL_OFFSET_TABLE in a different way, as is
   2605      1.1  christos 	     permitted by the ABI, we might have to change this
   2606      1.1  christos 	     calculation.  */
   2607      1.1  christos 	  relocation -= htab->elf.sgot->output_section->vma;
   2608      1.1  christos 	  break;
   2609      1.1  christos 
   2610      1.1  christos 	case R_390_GOTPC:
   2611      1.1  christos 	case R_390_GOTPCDBL:
   2612      1.1  christos 	  /* Use global offset table as symbol value.  */
   2613      1.1  christos 	  relocation = htab->elf.sgot->output_section->vma;
   2614      1.1  christos 	  unresolved_reloc = FALSE;
   2615      1.1  christos 	  break;
   2616      1.1  christos 
   2617      1.1  christos 	case R_390_PLT12DBL:
   2618      1.1  christos 	case R_390_PLT16DBL:
   2619      1.1  christos 	case R_390_PLT24DBL:
   2620      1.1  christos 	case R_390_PLT32:
   2621      1.1  christos 	case R_390_PLT32DBL:
   2622      1.1  christos 	case R_390_PLT64:
   2623      1.1  christos 	  /* Relocation is to the entry for this symbol in the
   2624      1.1  christos 	     procedure linkage table.  */
   2625      1.1  christos 
   2626      1.1  christos 	  /* Resolve a PLT32 reloc against a local symbol directly,
   2627      1.1  christos 	     without using the procedure linkage table.  */
   2628      1.1  christos 	  if (h == NULL)
   2629      1.1  christos 	    break;
   2630      1.1  christos 
   2631      1.1  christos 	  if (h->plt.offset == (bfd_vma) -1
   2632      1.1  christos 	      || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
   2633      1.1  christos 	    {
   2634      1.1  christos 	      /* We didn't make a PLT entry for this symbol.  This
   2635      1.1  christos 		 happens when statically linking PIC code, or when
   2636      1.1  christos 		 using -Bsymbolic.  */
   2637      1.1  christos 	      break;
   2638      1.1  christos 	    }
   2639      1.1  christos 	  if (s390_is_ifunc_symbol_p (h))
   2640      1.1  christos 	    relocation = (htab->elf.iplt->output_section->vma
   2641      1.1  christos 			  + htab->elf.iplt->output_offset
   2642      1.1  christos 			  + h->plt.offset);
   2643      1.1  christos 	  else
   2644      1.1  christos 	    relocation = (htab->elf.splt->output_section->vma
   2645      1.1  christos 			  + htab->elf.splt->output_offset
   2646      1.1  christos 			  + h->plt.offset);
   2647      1.1  christos 	  unresolved_reloc = FALSE;
   2648      1.1  christos 	  break;
   2649      1.1  christos 
   2650      1.1  christos 	case R_390_PLTOFF16:
   2651      1.1  christos 	case R_390_PLTOFF32:
   2652      1.1  christos 	case R_390_PLTOFF64:
   2653      1.1  christos 	  /* Relocation is to the entry for this symbol in the
   2654      1.1  christos 	     procedure linkage table relative to the start of the GOT.  */
   2655      1.1  christos 
   2656      1.1  christos 	  /* For local symbols or if we didn't make a PLT entry for
   2657      1.1  christos 	     this symbol resolve the symbol directly.  */
   2658      1.1  christos 	  if (h == NULL
   2659      1.1  christos 	      || h->plt.offset == (bfd_vma) -1
   2660      1.1  christos 	      || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
   2661      1.1  christos 	    {
   2662      1.1  christos 	      relocation -= htab->elf.sgot->output_section->vma;
   2663      1.1  christos 	      break;
   2664      1.1  christos 	    }
   2665      1.1  christos 
   2666      1.1  christos 	  if (s390_is_ifunc_symbol_p (h))
   2667      1.1  christos 	    relocation = (htab->elf.iplt->output_section->vma
   2668      1.1  christos 			  + htab->elf.iplt->output_offset
   2669      1.1  christos 			  + h->plt.offset
   2670      1.1  christos 			  - htab->elf.sgot->output_section->vma);
   2671      1.1  christos 	  else
   2672      1.1  christos 	    relocation = (htab->elf.splt->output_section->vma
   2673      1.1  christos 			  + htab->elf.splt->output_offset
   2674      1.1  christos 			  + h->plt.offset
   2675      1.1  christos 			  - htab->elf.sgot->output_section->vma);
   2676      1.1  christos 	  unresolved_reloc = FALSE;
   2677      1.1  christos 	  break;
   2678      1.1  christos 
   2679      1.1  christos 	case R_390_8:
   2680      1.1  christos 	case R_390_16:
   2681      1.1  christos 	case R_390_32:
   2682      1.1  christos 	case R_390_64:
   2683      1.1  christos 	case R_390_PC16:
   2684      1.1  christos 	case R_390_PC12DBL:
   2685      1.1  christos 	case R_390_PC16DBL:
   2686      1.1  christos 	case R_390_PC24DBL:
   2687      1.1  christos 	case R_390_PC32:
   2688      1.1  christos 	case R_390_PC32DBL:
   2689      1.1  christos 	case R_390_PC64:
   2690      1.1  christos 
   2691      1.1  christos 	  if (h != NULL
   2692      1.1  christos 	      && s390_is_ifunc_symbol_p (h)
   2693      1.1  christos 	      && h->def_regular)
   2694      1.1  christos 	    {
   2695      1.1  christos 	      if (!info->shared || !h->non_got_ref)
   2696      1.1  christos 		{
   2697      1.1  christos 		  /* For a non-shared object STT_GNU_IFUNC symbol must
   2698      1.1  christos 		     go through PLT.  */
   2699      1.1  christos 		  relocation = (htab->elf.iplt->output_section->vma
   2700      1.1  christos 				+ htab->elf.iplt->output_offset
   2701      1.1  christos 				+ h ->plt.offset);
   2702      1.1  christos 		  goto do_relocation;
   2703      1.1  christos 		}
   2704      1.1  christos 	      else
   2705      1.1  christos 		{
   2706      1.1  christos 		  /* For shared objects a runtime relocation is needed.  */
   2707      1.1  christos 
   2708      1.1  christos 		  Elf_Internal_Rela outrel;
   2709      1.1  christos 		  asection *sreloc;
   2710      1.1  christos 
   2711      1.1  christos 		  /* Need a dynamic relocation to get the real function
   2712      1.1  christos 		     address.  */
   2713      1.1  christos 		  outrel.r_offset = _bfd_elf_section_offset (output_bfd,
   2714      1.1  christos 							     info,
   2715      1.1  christos 							     input_section,
   2716      1.1  christos 							     rel->r_offset);
   2717      1.1  christos 		  if (outrel.r_offset == (bfd_vma) -1
   2718      1.1  christos 		      || outrel.r_offset == (bfd_vma) -2)
   2719      1.1  christos 		    abort ();
   2720      1.1  christos 
   2721      1.1  christos 		  outrel.r_offset += (input_section->output_section->vma
   2722      1.1  christos 				      + input_section->output_offset);
   2723      1.1  christos 
   2724      1.1  christos 		  if (h->dynindx == -1
   2725      1.1  christos 		      || h->forced_local
   2726      1.1  christos 		      || info->executable)
   2727      1.1  christos 		    {
   2728      1.1  christos 		      /* This symbol is resolved locally.  */
   2729      1.1  christos 		      outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
   2730      1.1  christos 		      outrel.r_addend = (h->root.u.def.value
   2731      1.1  christos 					 + h->root.u.def.section->output_section->vma
   2732      1.1  christos 					 + h->root.u.def.section->output_offset);
   2733      1.1  christos 		    }
   2734      1.1  christos 		  else
   2735      1.1  christos 		    {
   2736      1.1  christos 		      outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
   2737      1.1  christos 		      outrel.r_addend = 0;
   2738      1.1  christos 		    }
   2739      1.1  christos 
   2740      1.1  christos 		  sreloc = htab->elf.irelifunc;
   2741      1.1  christos 		  elf_append_rela (output_bfd, sreloc, &outrel);
   2742      1.1  christos 
   2743      1.1  christos 		  /* If this reloc is against an external symbol, we
   2744      1.1  christos 		     do not want to fiddle with the addend.  Otherwise,
   2745      1.1  christos 		     we need to include the symbol value so that it
   2746      1.1  christos 		     becomes an addend for the dynamic reloc.  For an
   2747      1.1  christos 		     internal symbol, we have updated addend.  */
   2748      1.1  christos 		  continue;
   2749      1.1  christos 		}
   2750      1.1  christos 	    }
   2751      1.1  christos 
   2752      1.1  christos 	  if ((input_section->flags & SEC_ALLOC) == 0)
   2753      1.1  christos 	    break;
   2754      1.1  christos 
   2755      1.1  christos 	  if ((info->shared
   2756      1.1  christos 	       && (h == NULL
   2757      1.1  christos 		   || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
   2758      1.1  christos 		   || h->root.type != bfd_link_hash_undefweak)
   2759      1.1  christos 	       && ((r_type != R_390_PC16
   2760      1.1  christos 		    && r_type != R_390_PC12DBL
   2761      1.1  christos 		    && r_type != R_390_PC16DBL
   2762      1.1  christos 		    && r_type != R_390_PC24DBL
   2763      1.1  christos 		    && r_type != R_390_PC32
   2764      1.1  christos 		    && r_type != R_390_PC32DBL
   2765      1.1  christos 		    && r_type != R_390_PC64)
   2766      1.1  christos 		   || !SYMBOL_CALLS_LOCAL (info, h)))
   2767      1.1  christos 	      || (ELIMINATE_COPY_RELOCS
   2768      1.1  christos 		  && !info->shared
   2769      1.1  christos 		  && h != NULL
   2770      1.1  christos 		  && h->dynindx != -1
   2771      1.1  christos 		  && !h->non_got_ref
   2772      1.1  christos 		  && ((h->def_dynamic
   2773      1.1  christos 		       && !h->def_regular)
   2774      1.1  christos 		      || h->root.type == bfd_link_hash_undefweak
   2775      1.1  christos 		      || h->root.type == bfd_link_hash_undefined)))
   2776      1.1  christos 	    {
   2777      1.1  christos 	      Elf_Internal_Rela outrel;
   2778      1.1  christos 	      bfd_boolean skip, relocate;
   2779      1.1  christos 	      asection *sreloc;
   2780      1.1  christos 	      bfd_byte *loc;
   2781      1.1  christos 
   2782      1.1  christos 	      /* When generating a shared object, these relocations
   2783      1.1  christos 		 are copied into the output file to be resolved at run
   2784      1.1  christos 		 time.  */
   2785      1.1  christos 	      skip = FALSE;
   2786      1.1  christos 	      relocate = FALSE;
   2787      1.1  christos 
   2788      1.1  christos 	      outrel.r_offset =
   2789      1.1  christos 		_bfd_elf_section_offset (output_bfd, info, input_section,
   2790      1.1  christos 					 rel->r_offset);
   2791      1.1  christos 	      if (outrel.r_offset == (bfd_vma) -1)
   2792      1.1  christos 		skip = TRUE;
   2793      1.1  christos 	      else if (outrel.r_offset == (bfd_vma) -2)
   2794      1.1  christos 		skip = TRUE, relocate = TRUE;
   2795      1.1  christos 
   2796      1.1  christos 	      outrel.r_offset += (input_section->output_section->vma
   2797      1.1  christos 				  + input_section->output_offset);
   2798      1.1  christos 
   2799      1.1  christos 	      if (skip)
   2800      1.1  christos 		memset (&outrel, 0, sizeof outrel);
   2801      1.1  christos 	      else if (h != NULL
   2802      1.1  christos 		       && h->dynindx != -1
   2803      1.1  christos 		       && (r_type == R_390_PC16
   2804      1.1  christos 			   || r_type == R_390_PC12DBL
   2805      1.1  christos 			   || r_type == R_390_PC16DBL
   2806      1.1  christos 			   || r_type == R_390_PC24DBL
   2807      1.1  christos 			   || r_type == R_390_PC32
   2808      1.1  christos 			   || r_type == R_390_PC32DBL
   2809      1.1  christos 			   || r_type == R_390_PC64
   2810      1.1  christos 			   || !info->shared
   2811      1.1  christos 			   || !SYMBOLIC_BIND (info, h)
   2812      1.1  christos 			   || !h->def_regular))
   2813      1.1  christos 		{
   2814      1.1  christos 		  outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
   2815      1.1  christos 		  outrel.r_addend = rel->r_addend;
   2816      1.1  christos 		}
   2817      1.1  christos 	      else
   2818      1.1  christos 		{
   2819      1.1  christos 		  /* This symbol is local, or marked to become local.  */
   2820      1.1  christos 		  outrel.r_addend = relocation + rel->r_addend;
   2821      1.1  christos 		  if (r_type == R_390_64)
   2822      1.1  christos 		    {
   2823      1.1  christos 		      relocate = TRUE;
   2824      1.1  christos 		      outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   2825      1.1  christos 		    }
   2826      1.1  christos 		  else
   2827      1.1  christos 		    {
   2828      1.1  christos 		      long sindx;
   2829      1.1  christos 
   2830      1.1  christos 		      if (bfd_is_abs_section (sec))
   2831      1.1  christos 			sindx = 0;
   2832      1.1  christos 		      else if (sec == NULL || sec->owner == NULL)
   2833      1.1  christos 			{
   2834      1.1  christos 			  bfd_set_error(bfd_error_bad_value);
   2835      1.1  christos 			  return FALSE;
   2836      1.1  christos 			}
   2837      1.1  christos 		      else
   2838      1.1  christos 			{
   2839      1.1  christos 			  asection *osec;
   2840      1.1  christos 
   2841      1.1  christos 			  osec = sec->output_section;
   2842      1.1  christos 			  sindx = elf_section_data (osec)->dynindx;
   2843      1.1  christos 
   2844      1.1  christos 			  if (sindx == 0)
   2845      1.1  christos 			    {
   2846      1.1  christos 			      osec = htab->elf.text_index_section;
   2847      1.1  christos 			      sindx = elf_section_data (osec)->dynindx;
   2848      1.1  christos 			    }
   2849      1.1  christos 			  BFD_ASSERT (sindx != 0);
   2850      1.1  christos 
   2851      1.1  christos 			  /* We are turning this relocation into one
   2852      1.1  christos 			     against a section symbol, so subtract out
   2853      1.1  christos 			     the output section's address but not the
   2854      1.1  christos 			     offset of the input section in the output
   2855      1.1  christos 			     section.  */
   2856      1.1  christos 			  outrel.r_addend -= osec->vma;
   2857      1.1  christos 			}
   2858      1.1  christos 		      outrel.r_info = ELF64_R_INFO (sindx, r_type);
   2859      1.1  christos 		    }
   2860      1.1  christos 		}
   2861      1.1  christos 
   2862      1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   2863      1.1  christos 	      if (sreloc == NULL)
   2864      1.1  christos 		abort ();
   2865      1.1  christos 
   2866      1.1  christos 	      loc = sreloc->contents;
   2867      1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
   2868      1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   2869      1.1  christos 
   2870      1.1  christos 	      /* If this reloc is against an external symbol, we do
   2871      1.1  christos 		 not want to fiddle with the addend.  Otherwise, we
   2872      1.1  christos 		 need to include the symbol value so that it becomes
   2873      1.1  christos 		 an addend for the dynamic reloc.  */
   2874      1.1  christos 	      if (! relocate)
   2875      1.1  christos 		continue;
   2876      1.1  christos 	    }
   2877      1.1  christos 
   2878      1.1  christos 	  break;
   2879      1.1  christos 
   2880      1.1  christos 	  /* Relocations for tls literal pool entries.  */
   2881      1.1  christos 	case R_390_TLS_IE64:
   2882      1.1  christos 	  if (info->shared)
   2883      1.1  christos 	    {
   2884      1.1  christos 	      Elf_Internal_Rela outrel;
   2885      1.1  christos 	      asection *sreloc;
   2886      1.1  christos 	      bfd_byte *loc;
   2887      1.1  christos 
   2888      1.1  christos 	      outrel.r_offset = rel->r_offset
   2889      1.1  christos 				+ input_section->output_section->vma
   2890      1.1  christos 				+ input_section->output_offset;
   2891      1.1  christos 	      outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   2892      1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   2893      1.1  christos 	      if (sreloc == NULL)
   2894      1.1  christos 		abort ();
   2895      1.1  christos 	      loc = sreloc->contents;
   2896      1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
   2897      1.1  christos 	      bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
   2898      1.1  christos 	    }
   2899      1.1  christos 	  /* Fall through.  */
   2900      1.1  christos 
   2901      1.1  christos 	case R_390_TLS_GD64:
   2902      1.1  christos 	case R_390_TLS_GOTIE64:
   2903      1.1  christos 	  r_type = elf_s390_tls_transition (info, r_type, h == NULL);
   2904      1.1  christos 	  tls_type = GOT_UNKNOWN;
   2905      1.1  christos 	  if (h == NULL && local_got_offsets)
   2906      1.1  christos 	    tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
   2907      1.1  christos 	  else if (h != NULL)
   2908      1.1  christos 	    {
   2909      1.1  christos 	      tls_type = elf_s390_hash_entry(h)->tls_type;
   2910      1.1  christos 	      if (!info->shared && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
   2911      1.1  christos 		r_type = R_390_TLS_LE64;
   2912      1.1  christos 	    }
   2913      1.1  christos 	  if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
   2914      1.1  christos 	    r_type = R_390_TLS_IE64;
   2915      1.1  christos 
   2916      1.1  christos 	  if (r_type == R_390_TLS_LE64)
   2917      1.1  christos 	    {
   2918      1.1  christos 	      /* This relocation gets optimized away by the local exec
   2919      1.1  christos 		 access optimization.  */
   2920      1.1  christos 	      BFD_ASSERT (! unresolved_reloc);
   2921      1.1  christos 	      bfd_put_64 (output_bfd, -tpoff (info, relocation),
   2922      1.1  christos 			  contents + rel->r_offset);
   2923      1.1  christos 	      continue;
   2924      1.1  christos 	    }
   2925      1.1  christos 
   2926      1.1  christos 	  if (htab->elf.sgot == NULL)
   2927      1.1  christos 	    abort ();
   2928      1.1  christos 
   2929      1.1  christos 	  if (h != NULL)
   2930      1.1  christos 	    off = h->got.offset;
   2931      1.1  christos 	  else
   2932      1.1  christos 	    {
   2933      1.1  christos 	      if (local_got_offsets == NULL)
   2934      1.1  christos 		abort ();
   2935      1.1  christos 
   2936      1.1  christos 	      off = local_got_offsets[r_symndx];
   2937      1.1  christos 	    }
   2938      1.1  christos 
   2939      1.1  christos 	emit_tls_relocs:
   2940      1.1  christos 
   2941      1.1  christos 	  if ((off & 1) != 0)
   2942      1.1  christos 	    off &= ~1;
   2943      1.1  christos 	  else
   2944      1.1  christos 	    {
   2945      1.1  christos 	      Elf_Internal_Rela outrel;
   2946      1.1  christos 	      bfd_byte *loc;
   2947      1.1  christos 	      int dr_type, indx;
   2948      1.1  christos 
   2949      1.1  christos 	      if (htab->elf.srelgot == NULL)
   2950      1.1  christos 		abort ();
   2951      1.1  christos 
   2952      1.1  christos 	      outrel.r_offset = (htab->elf.sgot->output_section->vma
   2953      1.1  christos 				 + htab->elf.sgot->output_offset + off);
   2954      1.1  christos 
   2955      1.1  christos 	      indx = h && h->dynindx != -1 ? h->dynindx : 0;
   2956      1.1  christos 	      if (r_type == R_390_TLS_GD64)
   2957      1.1  christos 		dr_type = R_390_TLS_DTPMOD;
   2958      1.1  christos 	      else
   2959      1.1  christos 		dr_type = R_390_TLS_TPOFF;
   2960      1.1  christos 	      if (dr_type == R_390_TLS_TPOFF && indx == 0)
   2961      1.1  christos 		outrel.r_addend = relocation - dtpoff_base (info);
   2962      1.1  christos 	      else
   2963      1.1  christos 		outrel.r_addend = 0;
   2964      1.1  christos 	      outrel.r_info = ELF64_R_INFO (indx, dr_type);
   2965      1.1  christos 	      loc = htab->elf.srelgot->contents;
   2966      1.1  christos 	      loc += htab->elf.srelgot->reloc_count++
   2967      1.1  christos 		* sizeof (Elf64_External_Rela);
   2968      1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   2969      1.1  christos 
   2970      1.1  christos 	      if (r_type == R_390_TLS_GD64)
   2971      1.1  christos 		{
   2972      1.1  christos 		  if (indx == 0)
   2973      1.1  christos 		    {
   2974      1.1  christos 	    	      BFD_ASSERT (! unresolved_reloc);
   2975      1.1  christos 		      bfd_put_64 (output_bfd,
   2976      1.1  christos 				  relocation - dtpoff_base (info),
   2977      1.1  christos 				  htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
   2978      1.1  christos 		    }
   2979      1.1  christos 		  else
   2980      1.1  christos 		    {
   2981      1.1  christos 		      outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
   2982      1.1  christos 		      outrel.r_offset += GOT_ENTRY_SIZE;
   2983      1.1  christos 		      outrel.r_addend = 0;
   2984      1.1  christos 		      htab->elf.srelgot->reloc_count++;
   2985      1.1  christos 		      loc += sizeof (Elf64_External_Rela);
   2986      1.1  christos 		      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   2987      1.1  christos 		    }
   2988      1.1  christos 		}
   2989      1.1  christos 
   2990      1.1  christos 	      if (h != NULL)
   2991      1.1  christos 		h->got.offset |= 1;
   2992      1.1  christos 	      else
   2993      1.1  christos 		local_got_offsets[r_symndx] |= 1;
   2994      1.1  christos 	    }
   2995      1.1  christos 
   2996      1.1  christos 	  if (off >= (bfd_vma) -2)
   2997      1.1  christos 	    abort ();
   2998      1.1  christos 	  if (r_type == ELF64_R_TYPE (rel->r_info))
   2999      1.1  christos 	    {
   3000      1.1  christos 	      relocation = htab->elf.sgot->output_offset + off;
   3001      1.1  christos 	      if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
   3002      1.1  christos 		relocation += htab->elf.sgot->output_section->vma;
   3003      1.1  christos 	      unresolved_reloc = FALSE;
   3004      1.1  christos 	    }
   3005      1.1  christos 	  else
   3006      1.1  christos 	    {
   3007      1.1  christos 	      bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
   3008      1.1  christos 			  contents + rel->r_offset);
   3009      1.1  christos 	      continue;
   3010      1.1  christos 	    }
   3011      1.1  christos 	  break;
   3012      1.1  christos 
   3013      1.1  christos 	case R_390_TLS_GOTIE12:
   3014      1.1  christos 	case R_390_TLS_GOTIE20:
   3015      1.1  christos 	case R_390_TLS_IEENT:
   3016      1.1  christos 	  if (h == NULL)
   3017      1.1  christos 	    {
   3018      1.1  christos 	      if (local_got_offsets == NULL)
   3019      1.1  christos 		abort();
   3020      1.1  christos 	      off = local_got_offsets[r_symndx];
   3021      1.1  christos 	      if (info->shared)
   3022      1.1  christos 		goto emit_tls_relocs;
   3023      1.1  christos 	    }
   3024      1.1  christos 	  else
   3025      1.1  christos 	    {
   3026      1.1  christos 	      off = h->got.offset;
   3027      1.1  christos 	      tls_type = elf_s390_hash_entry(h)->tls_type;
   3028      1.1  christos 	      if (info->shared || h->dynindx != -1 || tls_type < GOT_TLS_IE)
   3029      1.1  christos 		goto emit_tls_relocs;
   3030      1.1  christos 	    }
   3031      1.1  christos 
   3032      1.1  christos 	  if (htab->elf.sgot == NULL)
   3033      1.1  christos 	    abort ();
   3034      1.1  christos 
   3035      1.1  christos 	  BFD_ASSERT (! unresolved_reloc);
   3036      1.1  christos 	  bfd_put_64 (output_bfd, -tpoff (info, relocation),
   3037      1.1  christos 		      htab->elf.sgot->contents + off);
   3038      1.1  christos 	  relocation = htab->elf.sgot->output_offset + off;
   3039      1.1  christos 	  if (r_type == R_390_TLS_IEENT)
   3040      1.1  christos 	    relocation += htab->elf.sgot->output_section->vma;
   3041      1.1  christos 	  unresolved_reloc = FALSE;
   3042      1.1  christos 	  break;
   3043      1.1  christos 
   3044      1.1  christos 	case R_390_TLS_LDM64:
   3045      1.1  christos 	  if (! info->shared)
   3046      1.1  christos 	    /* The literal pool entry this relocation refers to gets ignored
   3047      1.1  christos 	       by the optimized code of the local exec model. Do nothing
   3048      1.1  christos 	       and the value will turn out zero.  */
   3049      1.1  christos 	    continue;
   3050      1.1  christos 
   3051      1.1  christos 	  if (htab->elf.sgot == NULL)
   3052      1.1  christos 	    abort ();
   3053      1.1  christos 
   3054      1.1  christos 	  off = htab->tls_ldm_got.offset;
   3055      1.1  christos 	  if (off & 1)
   3056      1.1  christos 	    off &= ~1;
   3057      1.1  christos 	  else
   3058      1.1  christos 	    {
   3059      1.1  christos 	      Elf_Internal_Rela outrel;
   3060      1.1  christos 	      bfd_byte *loc;
   3061      1.1  christos 
   3062      1.1  christos 	      if (htab->elf.srelgot == NULL)
   3063      1.1  christos 		abort ();
   3064      1.1  christos 
   3065      1.1  christos 	      outrel.r_offset = (htab->elf.sgot->output_section->vma
   3066      1.1  christos 				 + htab->elf.sgot->output_offset + off);
   3067      1.1  christos 
   3068      1.1  christos 	      bfd_put_64 (output_bfd, 0,
   3069      1.1  christos 			  htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
   3070      1.1  christos 	      outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
   3071      1.1  christos 	      outrel.r_addend = 0;
   3072      1.1  christos 	      loc = htab->elf.srelgot->contents;
   3073      1.1  christos 	      loc += htab->elf.srelgot->reloc_count++
   3074      1.1  christos 		* sizeof (Elf64_External_Rela);
   3075      1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   3076      1.1  christos 	      htab->tls_ldm_got.offset |= 1;
   3077      1.1  christos 	    }
   3078      1.1  christos 	  relocation = htab->elf.sgot->output_offset + off;
   3079      1.1  christos 	  unresolved_reloc = FALSE;
   3080      1.1  christos 	  break;
   3081      1.1  christos 
   3082      1.1  christos 	case R_390_TLS_LE64:
   3083  1.1.1.2  christos 	  if (info->shared && !info->pie)
   3084      1.1  christos 	    {
   3085      1.1  christos 	      /* Linking a shared library with non-fpic code requires
   3086      1.1  christos 		 a R_390_TLS_TPOFF relocation.  */
   3087      1.1  christos 	      Elf_Internal_Rela outrel;
   3088      1.1  christos 	      asection *sreloc;
   3089      1.1  christos 	      bfd_byte *loc;
   3090      1.1  christos 	      int indx;
   3091      1.1  christos 
   3092      1.1  christos 	      outrel.r_offset = rel->r_offset
   3093      1.1  christos 				+ input_section->output_section->vma
   3094      1.1  christos 				+ input_section->output_offset;
   3095      1.1  christos 	      if (h != NULL && h->dynindx != -1)
   3096      1.1  christos 		indx = h->dynindx;
   3097      1.1  christos 	      else
   3098      1.1  christos 		indx = 0;
   3099      1.1  christos 	      outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
   3100      1.1  christos 	      if (indx == 0)
   3101      1.1  christos 		outrel.r_addend = relocation - dtpoff_base (info);
   3102      1.1  christos 	      else
   3103      1.1  christos 		outrel.r_addend = 0;
   3104      1.1  christos 	      sreloc = elf_section_data (input_section)->sreloc;
   3105      1.1  christos 	      if (sreloc == NULL)
   3106      1.1  christos 		abort ();
   3107      1.1  christos 	      loc = sreloc->contents;
   3108      1.1  christos 	      loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
   3109      1.1  christos 	      bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
   3110      1.1  christos 	    }
   3111      1.1  christos 	  else
   3112      1.1  christos 	    {
   3113      1.1  christos 	      BFD_ASSERT (! unresolved_reloc);
   3114      1.1  christos 	      bfd_put_64 (output_bfd, -tpoff (info, relocation),
   3115      1.1  christos 			  contents + rel->r_offset);
   3116      1.1  christos 	    }
   3117      1.1  christos 	  continue;
   3118      1.1  christos 
   3119      1.1  christos 	case R_390_TLS_LDO64:
   3120      1.1  christos 	  if (info->shared || (input_section->flags & SEC_DEBUGGING))
   3121      1.1  christos 	    relocation -= dtpoff_base (info);
   3122      1.1  christos 	  else
   3123      1.1  christos 	    /* When converting LDO to LE, we must negate.  */
   3124      1.1  christos 	    relocation = -tpoff (info, relocation);
   3125      1.1  christos 	  break;
   3126      1.1  christos 
   3127      1.1  christos 	  /* Relocations for tls instructions.  */
   3128      1.1  christos 	case R_390_TLS_LOAD:
   3129      1.1  christos 	case R_390_TLS_GDCALL:
   3130      1.1  christos 	case R_390_TLS_LDCALL:
   3131      1.1  christos 	  tls_type = GOT_UNKNOWN;
   3132      1.1  christos 	  if (h == NULL && local_got_offsets)
   3133      1.1  christos 	    tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
   3134      1.1  christos 	  else if (h != NULL)
   3135      1.1  christos 	    tls_type = elf_s390_hash_entry(h)->tls_type;
   3136      1.1  christos 
   3137      1.1  christos 	  if (tls_type == GOT_TLS_GD)
   3138      1.1  christos 	    continue;
   3139      1.1  christos 
   3140      1.1  christos 	  if (r_type == R_390_TLS_LOAD)
   3141      1.1  christos 	    {
   3142      1.1  christos 	      if (!info->shared && (h == NULL || h->dynindx == -1))
   3143      1.1  christos 		{
   3144      1.1  christos 		  /* IE->LE transition. Four valid cases:
   3145      1.1  christos 		     lg %rx,(0,%ry)    -> sllg %rx,%ry,0
   3146      1.1  christos 		     lg %rx,(%ry,0)    -> sllg %rx,%ry,0
   3147      1.1  christos 		     lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
   3148      1.1  christos 		     lg %rx,(%r12,%ry) -> sllg %rx,%ry,0  */
   3149      1.1  christos 		  unsigned int insn0, insn1, ry;
   3150      1.1  christos 
   3151      1.1  christos 		  insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
   3152      1.1  christos 		  insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
   3153      1.1  christos 		  if (insn1 != 0x0004)
   3154      1.1  christos 		    invalid_tls_insn (input_bfd, input_section, rel);
   3155      1.1  christos 		  ry = 0;
   3156      1.1  christos 		  if ((insn0 & 0xff00f000) == 0xe3000000)
   3157      1.1  christos 		    /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0  */
   3158      1.1  christos 		    ry = (insn0 & 0x000f0000);
   3159      1.1  christos 		  else if ((insn0 & 0xff0f0000) == 0xe3000000)
   3160      1.1  christos 		    /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0  */
   3161      1.1  christos 		    ry = (insn0 & 0x0000f000) << 4;
   3162      1.1  christos 		  else if ((insn0 & 0xff00f000) == 0xe300c000)
   3163      1.1  christos 		    /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0  */
   3164      1.1  christos 		    ry = (insn0 & 0x000f0000);
   3165      1.1  christos 		  else if ((insn0 & 0xff0f0000) == 0xe30c0000)
   3166      1.1  christos 		    /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0  */
   3167      1.1  christos 		    ry = (insn0 & 0x0000f000) << 4;
   3168      1.1  christos 		  else
   3169      1.1  christos 		    invalid_tls_insn (input_bfd, input_section, rel);
   3170      1.1  christos 		  insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
   3171      1.1  christos 		  insn1 = 0x000d;
   3172      1.1  christos 		  bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
   3173      1.1  christos 		  bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
   3174      1.1  christos 		}
   3175      1.1  christos 	    }
   3176      1.1  christos 	  else if (r_type == R_390_TLS_GDCALL)
   3177      1.1  christos 	    {
   3178      1.1  christos 	      unsigned int insn0, insn1;
   3179      1.1  christos 
   3180      1.1  christos 	      insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
   3181      1.1  christos 	      insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
   3182      1.1  christos 	      if ((insn0 & 0xffff0000) != 0xc0e50000)
   3183      1.1  christos 		invalid_tls_insn (input_bfd, input_section, rel);
   3184      1.1  christos 	      if (!info->shared && (h == NULL || h->dynindx == -1))
   3185      1.1  christos 		{
   3186      1.1  christos 		  /* GD->LE transition.
   3187      1.1  christos 		     brasl %r14,__tls_get_addr@plt -> brcl 0,. */
   3188      1.1  christos 		  insn0 = 0xc0040000;
   3189      1.1  christos 		  insn1 = 0x0000;
   3190      1.1  christos 		}
   3191      1.1  christos 	      else
   3192      1.1  christos 		{
   3193      1.1  christos 		  /* GD->IE transition.
   3194      1.1  christos 		     brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12)  */
   3195      1.1  christos 		  insn0 = 0xe322c000;
   3196      1.1  christos 		  insn1 = 0x0004;
   3197      1.1  christos 		}
   3198      1.1  christos 	      bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
   3199      1.1  christos 	      bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
   3200      1.1  christos 	    }
   3201      1.1  christos 	  else if (r_type == R_390_TLS_LDCALL)
   3202      1.1  christos 	    {
   3203      1.1  christos 	      if (!info->shared)
   3204      1.1  christos 		{
   3205      1.1  christos 		  unsigned int insn0, insn1;
   3206      1.1  christos 
   3207      1.1  christos 		  insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
   3208      1.1  christos 		  insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
   3209      1.1  christos 		  if ((insn0 & 0xffff0000) != 0xc0e50000)
   3210      1.1  christos 		    invalid_tls_insn (input_bfd, input_section, rel);
   3211      1.1  christos 		  /* LD->LE transition.
   3212      1.1  christos 		     brasl %r14,__tls_get_addr@plt -> brcl 0,. */
   3213      1.1  christos 		  insn0 = 0xc0040000;
   3214      1.1  christos 		  insn1 = 0x0000;
   3215      1.1  christos 		  bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
   3216      1.1  christos 		  bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
   3217      1.1  christos 		}
   3218      1.1  christos 	    }
   3219      1.1  christos 	  continue;
   3220      1.1  christos 
   3221      1.1  christos 	default:
   3222      1.1  christos 	  break;
   3223      1.1  christos 	}
   3224      1.1  christos 
   3225      1.1  christos       /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
   3226      1.1  christos 	 because such sections are not SEC_ALLOC and thus ld.so will
   3227      1.1  christos 	 not process them.  */
   3228      1.1  christos       if (unresolved_reloc
   3229      1.1  christos 	  && !((input_section->flags & SEC_DEBUGGING) != 0
   3230      1.1  christos 	       && h->def_dynamic)
   3231      1.1  christos 	  && _bfd_elf_section_offset (output_bfd, info, input_section,
   3232      1.1  christos 				      rel->r_offset) != (bfd_vma) -1)
   3233      1.1  christos 	(*_bfd_error_handler)
   3234      1.1  christos 	  (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
   3235      1.1  christos 	   input_bfd,
   3236      1.1  christos 	   input_section,
   3237      1.1  christos 	   (long) rel->r_offset,
   3238      1.1  christos 	   howto->name,
   3239      1.1  christos 	   h->root.root.string);
   3240      1.1  christos 
   3241      1.1  christos     do_relocation:
   3242      1.1  christos 
   3243      1.1  christos       /* When applying a 24 bit reloc we need to start one byte
   3244      1.1  christos 	 earlier.  Otherwise the 32 bit get/put bfd operations might
   3245      1.1  christos 	 access a byte after the actual section.  */
   3246      1.1  christos       if (r_type == R_390_PC24DBL
   3247      1.1  christos 	  || r_type == R_390_PLT24DBL)
   3248      1.1  christos 	rel->r_offset--;
   3249      1.1  christos 
   3250      1.1  christos       if (r_type == R_390_20
   3251      1.1  christos 	  || r_type == R_390_GOT20
   3252      1.1  christos 	  || r_type == R_390_GOTPLT20
   3253      1.1  christos 	  || r_type == R_390_TLS_GOTIE20)
   3254      1.1  christos 	{
   3255      1.1  christos 	  relocation += rel->r_addend;
   3256      1.1  christos 	  relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
   3257      1.1  christos 	  r = _bfd_final_link_relocate (howto, input_bfd, input_section,
   3258      1.1  christos 					contents, rel->r_offset,
   3259      1.1  christos 					relocation, 0);
   3260      1.1  christos 	}
   3261      1.1  christos       else
   3262      1.1  christos 	r = _bfd_final_link_relocate (howto, input_bfd, input_section,
   3263      1.1  christos 				      contents, rel->r_offset,
   3264      1.1  christos 				      relocation, rel->r_addend);
   3265      1.1  christos 
   3266      1.1  christos       if (r != bfd_reloc_ok)
   3267      1.1  christos 	{
   3268      1.1  christos 	  const char *name;
   3269      1.1  christos 
   3270      1.1  christos 	  if (h != NULL)
   3271      1.1  christos 	    name = h->root.root.string;
   3272      1.1  christos 	  else
   3273      1.1  christos 	    {
   3274      1.1  christos 	      name = bfd_elf_string_from_elf_section (input_bfd,
   3275      1.1  christos 						      symtab_hdr->sh_link,
   3276      1.1  christos 						      sym->st_name);
   3277      1.1  christos 	      if (name == NULL)
   3278      1.1  christos 		return FALSE;
   3279      1.1  christos 	      if (*name == '\0')
   3280      1.1  christos 		name = bfd_section_name (input_bfd, sec);
   3281      1.1  christos 	    }
   3282      1.1  christos 
   3283      1.1  christos 	  if (r == bfd_reloc_overflow)
   3284      1.1  christos 	    {
   3285      1.1  christos 
   3286      1.1  christos 	      if (! ((*info->callbacks->reloc_overflow)
   3287      1.1  christos 		     (info, (h ? &h->root : NULL), name, howto->name,
   3288      1.1  christos 		      (bfd_vma) 0, input_bfd, input_section,
   3289      1.1  christos 		      rel->r_offset)))
   3290      1.1  christos 		return FALSE;
   3291      1.1  christos 	    }
   3292      1.1  christos 	  else
   3293      1.1  christos 	    {
   3294      1.1  christos 	      (*_bfd_error_handler)
   3295      1.1  christos 		(_("%B(%A+0x%lx): reloc against `%s': error %d"),
   3296      1.1  christos 		 input_bfd, input_section,
   3297      1.1  christos 		 (long) rel->r_offset, name, (int) r);
   3298      1.1  christos 	      return FALSE;
   3299      1.1  christos 	    }
   3300      1.1  christos 	}
   3301      1.1  christos     }
   3302      1.1  christos 
   3303      1.1  christos   return TRUE;
   3304      1.1  christos }
   3305      1.1  christos 
   3306      1.1  christos /* Generate the PLT slots together with the dynamic relocations needed
   3307      1.1  christos    for IFUNC symbols.  */
   3308      1.1  christos 
   3309      1.1  christos static void
   3310      1.1  christos elf_s390_finish_ifunc_symbol (bfd *output_bfd,
   3311      1.1  christos 			      struct bfd_link_info *info,
   3312      1.1  christos 			      struct elf_link_hash_entry *h,
   3313      1.1  christos 			      struct elf_s390_link_hash_table *htab,
   3314      1.1  christos 			      bfd_vma plt_offset,
   3315      1.1  christos 			      bfd_vma resolver_address)
   3316      1.1  christos {
   3317      1.1  christos   bfd_vma plt_index;
   3318      1.1  christos   bfd_vma got_offset;
   3319      1.1  christos   Elf_Internal_Rela rela;
   3320      1.1  christos   bfd_byte *loc;
   3321      1.1  christos   asection *plt, *gotplt, *relplt;
   3322      1.1  christos 
   3323      1.1  christos   if (htab->elf.iplt == NULL
   3324      1.1  christos       || htab->elf.igotplt == NULL
   3325      1.1  christos       || htab->elf.irelplt == NULL)
   3326      1.1  christos     abort ();
   3327      1.1  christos 
   3328      1.1  christos   /* Index of the PLT slot within iplt section.  */
   3329      1.1  christos   plt_index = plt_offset / PLT_ENTRY_SIZE;
   3330      1.1  christos   plt = htab->elf.iplt;
   3331      1.1  christos   /* Offset into the igot.plt section.  */
   3332      1.1  christos   got_offset = plt_index * GOT_ENTRY_SIZE;
   3333      1.1  christos   gotplt = htab->elf.igotplt;
   3334      1.1  christos   relplt = htab->elf.irelplt;
   3335      1.1  christos 
   3336      1.1  christos   /* Fill in the blueprint of a PLT.  */
   3337      1.1  christos   memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
   3338      1.1  christos 	  PLT_ENTRY_SIZE);
   3339      1.1  christos 
   3340      1.1  christos   /* Fixup the relative address to the GOT entry */
   3341      1.1  christos   bfd_put_32 (output_bfd,
   3342      1.1  christos 	      (gotplt->output_section->vma +
   3343      1.1  christos 	       gotplt->output_offset + got_offset
   3344      1.1  christos 	       - (plt->output_section->vma +
   3345      1.1  christos 		  plt->output_offset +
   3346      1.1  christos 		  plt_offset))/2,
   3347      1.1  christos 	      plt->contents + plt_offset + 2);
   3348      1.1  christos   /* Fixup the relative branch to PLT 0 */
   3349      1.1  christos   bfd_put_32 (output_bfd, - (plt->output_offset +
   3350      1.1  christos 			     (PLT_ENTRY_SIZE * plt_index) + 22)/2,
   3351      1.1  christos 	      plt->contents + plt_offset + 24);
   3352      1.1  christos   /* Fixup offset into .rela.plt section.  */
   3353      1.1  christos   bfd_put_32 (output_bfd, relplt->output_offset +
   3354      1.1  christos 	      plt_index * sizeof (Elf64_External_Rela),
   3355      1.1  christos 	      plt->contents + plt_offset + 28);
   3356      1.1  christos 
   3357      1.1  christos   /* Fill in the entry in the global offset table.
   3358      1.1  christos      Points to instruction after GOT offset.  */
   3359      1.1  christos   bfd_put_64 (output_bfd,
   3360      1.1  christos 	      (plt->output_section->vma
   3361      1.1  christos 	       + plt->output_offset
   3362      1.1  christos 	       + plt_offset
   3363      1.1  christos 	       + 14),
   3364      1.1  christos 	      gotplt->contents + got_offset);
   3365      1.1  christos 
   3366      1.1  christos   /* Fill in the entry in the .rela.plt section.  */
   3367      1.1  christos   rela.r_offset = (gotplt->output_section->vma
   3368      1.1  christos 		   + gotplt->output_offset
   3369      1.1  christos 		   + got_offset);
   3370      1.1  christos 
   3371      1.1  christos   if (!h
   3372      1.1  christos       || h->dynindx == -1
   3373      1.1  christos       || ((info->executable
   3374      1.1  christos 	   || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
   3375      1.1  christos 	  && h->def_regular))
   3376      1.1  christos     {
   3377      1.1  christos       /* The symbol can be locally resolved.  */
   3378      1.1  christos       rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
   3379      1.1  christos       rela.r_addend = resolver_address;
   3380      1.1  christos     }
   3381      1.1  christos   else
   3382      1.1  christos     {
   3383      1.1  christos       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
   3384      1.1  christos       rela.r_addend = 0;
   3385      1.1  christos     }
   3386      1.1  christos 
   3387      1.1  christos   loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
   3388      1.1  christos   bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3389      1.1  christos }
   3390      1.1  christos 
   3391      1.1  christos 
   3392      1.1  christos /* Finish up dynamic symbol handling.  We set the contents of various
   3393      1.1  christos    dynamic sections here.  */
   3394      1.1  christos 
   3395      1.1  christos static bfd_boolean
   3396      1.1  christos elf_s390_finish_dynamic_symbol (bfd *output_bfd,
   3397      1.1  christos 				struct bfd_link_info *info,
   3398      1.1  christos 				struct elf_link_hash_entry *h,
   3399      1.1  christos 				Elf_Internal_Sym *sym)
   3400      1.1  christos {
   3401      1.1  christos   struct elf_s390_link_hash_table *htab;
   3402      1.1  christos   struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
   3403      1.1  christos 
   3404      1.1  christos   htab = elf_s390_hash_table (info);
   3405      1.1  christos   if (htab == NULL)
   3406      1.1  christos     return FALSE;
   3407      1.1  christos 
   3408      1.1  christos   if (h->plt.offset != (bfd_vma) -1)
   3409      1.1  christos     {
   3410      1.1  christos       bfd_vma plt_index;
   3411      1.1  christos       bfd_vma got_offset;
   3412      1.1  christos       Elf_Internal_Rela rela;
   3413      1.1  christos       bfd_byte *loc;
   3414      1.1  christos 
   3415      1.1  christos       /* This symbol has an entry in the procedure linkage table.  Set
   3416      1.1  christos 	 it up.  */
   3417      1.1  christos       if (s390_is_ifunc_symbol_p (h))
   3418      1.1  christos 	{
   3419      1.1  christos 	  /* If we can resolve the IFUNC symbol locally we generate an
   3420      1.1  christos 	     IRELATIVE reloc.  */
   3421      1.1  christos 	  elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
   3422      1.1  christos 					eh->ifunc_resolver_address +
   3423      1.1  christos 					eh->ifunc_resolver_section->output_offset +
   3424      1.1  christos 					eh->ifunc_resolver_section->output_section->vma);
   3425      1.1  christos 				 ;
   3426      1.1  christos 	  /* Fallthrough.  Handling of explicit GOT slots of IFUNC
   3427      1.1  christos 	     symbols is below.  */
   3428      1.1  christos 	}
   3429      1.1  christos       else
   3430      1.1  christos 	{
   3431      1.1  christos 	  if (h->dynindx == -1
   3432      1.1  christos 	      || htab->elf.splt == NULL
   3433      1.1  christos 	      || htab->elf.sgotplt == NULL
   3434      1.1  christos 	      || htab->elf.srelplt == NULL)
   3435      1.1  christos 	    abort ();
   3436      1.1  christos 
   3437      1.1  christos 	  /* Calc. index no.
   3438      1.1  christos 	     Current offset - size first entry / entry size.  */
   3439      1.1  christos 	  plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
   3440      1.1  christos 
   3441      1.1  christos 	  /* Offset in GOT is PLT index plus GOT headers(3) times 8,
   3442      1.1  christos 	     addr & GOT addr.  */
   3443      1.1  christos 	  got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
   3444      1.1  christos 
   3445      1.1  christos 	  /* Fill in the blueprint of a PLT.  */
   3446      1.1  christos 	  memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
   3447      1.1  christos 		  PLT_ENTRY_SIZE);
   3448      1.1  christos 
   3449      1.1  christos 	  /* Fixup the relative address to the GOT entry */
   3450      1.1  christos 	  bfd_put_32 (output_bfd,
   3451      1.1  christos 		      (htab->elf.sgotplt->output_section->vma +
   3452      1.1  christos 		       htab->elf.sgotplt->output_offset + got_offset
   3453      1.1  christos 		       - (htab->elf.splt->output_section->vma +
   3454      1.1  christos 			  htab->elf.splt->output_offset +
   3455      1.1  christos 			  h->plt.offset))/2,
   3456      1.1  christos 		      htab->elf.splt->contents + h->plt.offset + 2);
   3457      1.1  christos 	  /* Fixup the relative branch to PLT 0 */
   3458      1.1  christos 	  bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
   3459      1.1  christos 				     (PLT_ENTRY_SIZE * plt_index) + 22)/2,
   3460      1.1  christos 		      htab->elf.splt->contents + h->plt.offset + 24);
   3461      1.1  christos 	  /* Fixup offset into .rela.plt section.  */
   3462      1.1  christos 	  bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
   3463      1.1  christos 		      htab->elf.splt->contents + h->plt.offset + 28);
   3464      1.1  christos 
   3465      1.1  christos 	  /* Fill in the entry in the global offset table.
   3466      1.1  christos 	     Points to instruction after GOT offset.  */
   3467      1.1  christos 	  bfd_put_64 (output_bfd,
   3468      1.1  christos 		      (htab->elf.splt->output_section->vma
   3469      1.1  christos 		       + htab->elf.splt->output_offset
   3470      1.1  christos 		       + h->plt.offset
   3471      1.1  christos 		       + 14),
   3472      1.1  christos 		      htab->elf.sgotplt->contents + got_offset);
   3473      1.1  christos 
   3474      1.1  christos 	  /* Fill in the entry in the .rela.plt section.  */
   3475      1.1  christos 	  rela.r_offset = (htab->elf.sgotplt->output_section->vma
   3476      1.1  christos 			   + htab->elf.sgotplt->output_offset
   3477      1.1  christos 			   + got_offset);
   3478      1.1  christos 	  rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
   3479      1.1  christos 	  rela.r_addend = 0;
   3480      1.1  christos 	  loc = htab->elf.srelplt->contents + plt_index *
   3481      1.1  christos 	    sizeof (Elf64_External_Rela);
   3482      1.1  christos 	  bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3483      1.1  christos 
   3484      1.1  christos 	  if (!h->def_regular)
   3485      1.1  christos 	    {
   3486      1.1  christos 	      /* Mark the symbol as undefined, rather than as defined in
   3487      1.1  christos 		 the .plt section.  Leave the value alone.  This is a clue
   3488      1.1  christos 		 for the dynamic linker, to make function pointer
   3489      1.1  christos 		 comparisons work between an application and shared
   3490      1.1  christos 		 library.  */
   3491      1.1  christos 	      sym->st_shndx = SHN_UNDEF;
   3492      1.1  christos 	    }
   3493      1.1  christos 	}
   3494      1.1  christos     }
   3495      1.1  christos 
   3496      1.1  christos   if (h->got.offset != (bfd_vma) -1
   3497      1.1  christos       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
   3498      1.1  christos       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
   3499      1.1  christos       && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
   3500      1.1  christos     {
   3501      1.1  christos       Elf_Internal_Rela rela;
   3502      1.1  christos       bfd_byte *loc;
   3503      1.1  christos 
   3504      1.1  christos       /* This symbol has an entry in the global offset table.  Set it
   3505      1.1  christos 	 up.  */
   3506      1.1  christos       if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
   3507      1.1  christos 	abort ();
   3508      1.1  christos 
   3509      1.1  christos       rela.r_offset = (htab->elf.sgot->output_section->vma
   3510      1.1  christos 		       + htab->elf.sgot->output_offset
   3511      1.1  christos 		       + (h->got.offset &~ (bfd_vma) 1));
   3512      1.1  christos 
   3513      1.1  christos       if (h->def_regular && s390_is_ifunc_symbol_p (h))
   3514      1.1  christos 	{
   3515      1.1  christos 	  if (info->shared)
   3516      1.1  christos 	    {
   3517      1.1  christos 	      /* An explicit GOT slot usage needs GLOB_DAT.  If the
   3518      1.1  christos 		 symbol references local the implicit got.iplt slot
   3519      1.1  christos 		 will be used and the IRELATIVE reloc has been created
   3520      1.1  christos 		 above.  */
   3521      1.1  christos 	      goto do_glob_dat;
   3522      1.1  christos 	    }
   3523      1.1  christos 	  else
   3524      1.1  christos 	    {
   3525      1.1  christos 	      /* For non-shared objects explicit GOT slots must be
   3526      1.1  christos 		 filled with the PLT slot address for pointer
   3527      1.1  christos 		 equality reasons.  */
   3528      1.1  christos 	      bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
   3529      1.1  christos 				       + htab->elf.iplt->output_offset
   3530      1.1  christos 				       + h->plt.offset),
   3531      1.1  christos 			  htab->elf.sgot->contents + h->got.offset);
   3532      1.1  christos 	      return TRUE;
   3533      1.1  christos 	    }
   3534      1.1  christos 	}
   3535      1.1  christos       else if (info->shared
   3536      1.1  christos 	  && SYMBOL_REFERENCES_LOCAL (info, h))
   3537      1.1  christos 	{
   3538      1.1  christos 	  /* If this is a static link, or it is a -Bsymbolic link and
   3539      1.1  christos 	     the symbol is defined locally or was forced to be local
   3540      1.1  christos 	     because of a version file, we just want to emit a
   3541      1.1  christos 	     RELATIVE reloc.  The entry in the global offset table
   3542      1.1  christos 	     will already have been initialized in the
   3543      1.1  christos 	     relocate_section function.  */
   3544      1.1  christos 	  if (!h->def_regular)
   3545      1.1  christos 	    return FALSE;
   3546      1.1  christos 	  BFD_ASSERT((h->got.offset & 1) != 0);
   3547      1.1  christos 	  rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
   3548      1.1  christos 	  rela.r_addend = (h->root.u.def.value
   3549      1.1  christos 			   + h->root.u.def.section->output_section->vma
   3550      1.1  christos 			   + h->root.u.def.section->output_offset);
   3551      1.1  christos 	}
   3552      1.1  christos       else
   3553      1.1  christos 	{
   3554      1.1  christos 	  BFD_ASSERT((h->got.offset & 1) == 0);
   3555      1.1  christos do_glob_dat:
   3556      1.1  christos 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
   3557      1.1  christos 	  rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
   3558      1.1  christos 	  rela.r_addend = 0;
   3559      1.1  christos 	}
   3560      1.1  christos 
   3561      1.1  christos       loc = htab->elf.srelgot->contents;
   3562      1.1  christos       loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
   3563      1.1  christos       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3564      1.1  christos     }
   3565      1.1  christos 
   3566      1.1  christos   if (h->needs_copy)
   3567      1.1  christos     {
   3568      1.1  christos       Elf_Internal_Rela rela;
   3569      1.1  christos       bfd_byte *loc;
   3570      1.1  christos 
   3571      1.1  christos       /* This symbols needs a copy reloc.  Set it up.  */
   3572      1.1  christos 
   3573      1.1  christos       if (h->dynindx == -1
   3574      1.1  christos 	  || (h->root.type != bfd_link_hash_defined
   3575      1.1  christos 	      && h->root.type != bfd_link_hash_defweak)
   3576      1.1  christos 	  || htab->srelbss == NULL)
   3577      1.1  christos 	abort ();
   3578      1.1  christos 
   3579      1.1  christos       rela.r_offset = (h->root.u.def.value
   3580      1.1  christos 		       + h->root.u.def.section->output_section->vma
   3581      1.1  christos 		       + h->root.u.def.section->output_offset);
   3582      1.1  christos       rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
   3583      1.1  christos       rela.r_addend = 0;
   3584      1.1  christos       loc = htab->srelbss->contents;
   3585      1.1  christos       loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
   3586      1.1  christos       bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
   3587      1.1  christos     }
   3588      1.1  christos 
   3589      1.1  christos   /* Mark some specially defined symbols as absolute.  */
   3590      1.1  christos   if (h == htab->elf.hdynamic
   3591      1.1  christos       || h == htab->elf.hgot
   3592      1.1  christos       || h == htab->elf.hplt)
   3593      1.1  christos     sym->st_shndx = SHN_ABS;
   3594      1.1  christos 
   3595      1.1  christos   return TRUE;
   3596      1.1  christos }
   3597      1.1  christos 
   3598      1.1  christos /* Used to decide how to sort relocs in an optimal manner for the
   3599      1.1  christos    dynamic linker, before writing them out.  */
   3600      1.1  christos 
   3601      1.1  christos static enum elf_reloc_type_class
   3602      1.1  christos elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
   3603      1.1  christos 			   const asection *rel_sec ATTRIBUTE_UNUSED,
   3604      1.1  christos 			   const Elf_Internal_Rela *rela)
   3605      1.1  christos {
   3606      1.1  christos   switch ((int) ELF64_R_TYPE (rela->r_info))
   3607      1.1  christos     {
   3608      1.1  christos     case R_390_RELATIVE:
   3609      1.1  christos       return reloc_class_relative;
   3610      1.1  christos     case R_390_JMP_SLOT:
   3611      1.1  christos       return reloc_class_plt;
   3612      1.1  christos     case R_390_COPY:
   3613      1.1  christos       return reloc_class_copy;
   3614      1.1  christos     default:
   3615      1.1  christos       return reloc_class_normal;
   3616      1.1  christos     }
   3617      1.1  christos }
   3618      1.1  christos 
   3619      1.1  christos /* Finish up the dynamic sections.  */
   3620      1.1  christos 
   3621      1.1  christos static bfd_boolean
   3622      1.1  christos elf_s390_finish_dynamic_sections (bfd *output_bfd,
   3623      1.1  christos 				  struct bfd_link_info *info)
   3624      1.1  christos {
   3625      1.1  christos   struct elf_s390_link_hash_table *htab;
   3626      1.1  christos   bfd *dynobj;
   3627      1.1  christos   asection *sdyn;
   3628      1.1  christos   bfd *ibfd;
   3629      1.1  christos   unsigned int i;
   3630      1.1  christos 
   3631      1.1  christos   htab = elf_s390_hash_table (info);
   3632      1.1  christos   if (htab == NULL)
   3633      1.1  christos     return FALSE;
   3634      1.1  christos 
   3635      1.1  christos   dynobj = htab->elf.dynobj;
   3636      1.1  christos   sdyn = bfd_get_linker_section (dynobj, ".dynamic");
   3637      1.1  christos 
   3638      1.1  christos   if (htab->elf.dynamic_sections_created)
   3639      1.1  christos     {
   3640      1.1  christos       Elf64_External_Dyn *dyncon, *dynconend;
   3641      1.1  christos 
   3642      1.1  christos       if (sdyn == NULL || htab->elf.sgot == NULL)
   3643      1.1  christos 	abort ();
   3644      1.1  christos 
   3645      1.1  christos       dyncon = (Elf64_External_Dyn *) sdyn->contents;
   3646      1.1  christos       dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
   3647      1.1  christos       for (; dyncon < dynconend; dyncon++)
   3648      1.1  christos 	{
   3649      1.1  christos 	  Elf_Internal_Dyn dyn;
   3650      1.1  christos 	  asection *s;
   3651      1.1  christos 
   3652      1.1  christos 	  bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
   3653      1.1  christos 
   3654      1.1  christos 	  switch (dyn.d_tag)
   3655      1.1  christos 	    {
   3656      1.1  christos 	    default:
   3657      1.1  christos 	      continue;
   3658      1.1  christos 
   3659      1.1  christos 	    case DT_PLTGOT:
   3660      1.1  christos 	      dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
   3661      1.1  christos 	      break;
   3662      1.1  christos 
   3663      1.1  christos 	    case DT_JMPREL:
   3664      1.1  christos 	      dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
   3665      1.1  christos 	      break;
   3666      1.1  christos 
   3667      1.1  christos 	    case DT_PLTRELSZ:
   3668      1.1  christos 	      s = htab->elf.srelplt->output_section;
   3669      1.1  christos 	      dyn.d_un.d_val = s->size;
   3670      1.1  christos 	      break;
   3671      1.1  christos 
   3672      1.1  christos 	    case DT_RELASZ:
   3673      1.1  christos 	      /* The procedure linkage table relocs (DT_JMPREL) should
   3674      1.1  christos 		 not be included in the overall relocs (DT_RELA).
   3675      1.1  christos 		 Therefore, we override the DT_RELASZ entry here to
   3676      1.1  christos 		 make it not include the JMPREL relocs.  Since the
   3677      1.1  christos 		 linker script arranges for .rela.plt to follow all
   3678      1.1  christos 		 other relocation sections, we don't have to worry
   3679      1.1  christos 		 about changing the DT_RELA entry.  */
   3680      1.1  christos 	      s = htab->elf.srelplt->output_section;
   3681      1.1  christos 	      dyn.d_un.d_val -= s->size;
   3682      1.1  christos 	      break;
   3683      1.1  christos 	    }
   3684      1.1  christos 
   3685      1.1  christos 	  bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
   3686      1.1  christos 	}
   3687      1.1  christos 
   3688      1.1  christos       /* Fill in the special first entry in the procedure linkage table.  */
   3689      1.1  christos       if (htab->elf.splt && htab->elf.splt->size > 0)
   3690      1.1  christos 	{
   3691      1.1  christos 	  /* fill in blueprint for plt 0 entry */
   3692      1.1  christos 	  memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
   3693      1.1  christos 		  PLT_FIRST_ENTRY_SIZE);
   3694      1.1  christos 	  /* Fixup relative address to start of GOT */
   3695      1.1  christos 	  bfd_put_32 (output_bfd,
   3696      1.1  christos 		      (htab->elf.sgotplt->output_section->vma +
   3697      1.1  christos 		       htab->elf.sgotplt->output_offset
   3698      1.1  christos 		       - htab->elf.splt->output_section->vma - 6)/2,
   3699      1.1  christos 		      htab->elf.splt->contents + 8);
   3700      1.1  christos 	}
   3701      1.1  christos       if (elf_section_data (htab->elf.splt->output_section) != NULL)
   3702      1.1  christos 	elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
   3703      1.1  christos 	  = PLT_ENTRY_SIZE;
   3704      1.1  christos     }
   3705      1.1  christos 
   3706      1.1  christos   if (htab->elf.sgotplt)
   3707      1.1  christos     {
   3708      1.1  christos       /* Fill in the first three entries in the global offset table.  */
   3709      1.1  christos       if (htab->elf.sgotplt->size > 0)
   3710      1.1  christos 	{
   3711      1.1  christos 	  bfd_put_64 (output_bfd,
   3712      1.1  christos 		      (sdyn == NULL ? (bfd_vma) 0
   3713      1.1  christos 		       : sdyn->output_section->vma + sdyn->output_offset),
   3714      1.1  christos 		      htab->elf.sgotplt->contents);
   3715      1.1  christos 	  /* One entry for shared object struct ptr.  */
   3716      1.1  christos 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
   3717      1.1  christos 	  /* One entry for _dl_runtime_resolve.  */
   3718      1.1  christos 	  bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
   3719      1.1  christos 	}
   3720      1.1  christos 
   3721      1.1  christos       elf_section_data (htab->elf.sgot->output_section)
   3722      1.1  christos 	->this_hdr.sh_entsize = 8;
   3723      1.1  christos     }
   3724      1.1  christos 
   3725      1.1  christos   /* Finish dynamic symbol for local IFUNC symbols.  */
   3726  1.1.1.2  christos   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   3727      1.1  christos     {
   3728      1.1  christos       struct plt_entry *local_plt;
   3729      1.1  christos       Elf_Internal_Sym *isym;
   3730      1.1  christos       Elf_Internal_Shdr *symtab_hdr;
   3731      1.1  christos 
   3732      1.1  christos       symtab_hdr = &elf_symtab_hdr (ibfd);
   3733      1.1  christos 
   3734      1.1  christos       local_plt = elf_s390_local_plt (ibfd);
   3735      1.1  christos       if (local_plt != NULL)
   3736      1.1  christos 	for (i = 0; i < symtab_hdr->sh_info; i++)
   3737      1.1  christos 	  {
   3738      1.1  christos 	    if (local_plt[i].plt.offset != (bfd_vma) -1)
   3739      1.1  christos 	      {
   3740      1.1  christos 		asection *sec = local_plt[i].sec;
   3741      1.1  christos 		isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
   3742      1.1  christos 		if (isym == NULL)
   3743      1.1  christos 		  return FALSE;
   3744      1.1  christos 
   3745      1.1  christos 		if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
   3746      1.1  christos 		  elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
   3747      1.1  christos 						local_plt[i].plt.offset,
   3748      1.1  christos 						isym->st_value
   3749      1.1  christos 						+ sec->output_section->vma
   3750      1.1  christos 						+ sec->output_offset);
   3751      1.1  christos 
   3752      1.1  christos 	      }
   3753      1.1  christos 	  }
   3754      1.1  christos     }
   3755      1.1  christos 
   3756      1.1  christos   return TRUE;
   3757      1.1  christos }
   3758      1.1  christos 
   3759      1.1  christos /* Return address for Ith PLT stub in section PLT, for relocation REL
   3760      1.1  christos    or (bfd_vma) -1 if it should not be included.  */
   3761      1.1  christos 
   3762      1.1  christos static bfd_vma
   3763      1.1  christos elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
   3764      1.1  christos 		      const arelent *rel ATTRIBUTE_UNUSED)
   3765      1.1  christos {
   3766      1.1  christos   return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
   3767      1.1  christos }
   3768      1.1  christos 
   3769  1.1.1.3  christos /* Merge backend specific data from an object file to the output
   3770  1.1.1.3  christos    object file when linking.  */
   3771  1.1.1.3  christos 
   3772  1.1.1.3  christos static bfd_boolean
   3773  1.1.1.3  christos elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
   3774  1.1.1.3  christos {
   3775  1.1.1.3  christos   if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
   3776  1.1.1.3  christos     return TRUE;
   3777  1.1.1.3  christos 
   3778  1.1.1.3  christos   if (!elf_s390_merge_obj_attributes (ibfd, obfd))
   3779  1.1.1.3  christos     return FALSE;
   3780  1.1.1.3  christos 
   3781  1.1.1.3  christos   return TRUE;
   3782  1.1.1.3  christos }
   3783  1.1.1.3  christos 
   3784      1.1  christos /* Why was the hash table entry size definition changed from
   3785      1.1  christos    ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
   3786      1.1  christos    this is the only reason for the s390_elf64_size_info structure.  */
   3787      1.1  christos 
   3788      1.1  christos const struct elf_size_info s390_elf64_size_info =
   3789      1.1  christos {
   3790      1.1  christos   sizeof (Elf64_External_Ehdr),
   3791      1.1  christos   sizeof (Elf64_External_Phdr),
   3792      1.1  christos   sizeof (Elf64_External_Shdr),
   3793      1.1  christos   sizeof (Elf64_External_Rel),
   3794      1.1  christos   sizeof (Elf64_External_Rela),
   3795      1.1  christos   sizeof (Elf64_External_Sym),
   3796      1.1  christos   sizeof (Elf64_External_Dyn),
   3797      1.1  christos   sizeof (Elf_External_Note),
   3798      1.1  christos   8,		/* hash-table entry size.  */
   3799      1.1  christos   1,		/* internal relocations per external relocations.  */
   3800      1.1  christos   64,		/* arch_size.  */
   3801      1.1  christos   3,		/* log_file_align.  */
   3802      1.1  christos   ELFCLASS64, EV_CURRENT,
   3803      1.1  christos   bfd_elf64_write_out_phdrs,
   3804      1.1  christos   bfd_elf64_write_shdrs_and_ehdr,
   3805      1.1  christos   bfd_elf64_checksum_contents,
   3806      1.1  christos   bfd_elf64_write_relocs,
   3807      1.1  christos   bfd_elf64_swap_symbol_in,
   3808      1.1  christos   bfd_elf64_swap_symbol_out,
   3809      1.1  christos   bfd_elf64_slurp_reloc_table,
   3810      1.1  christos   bfd_elf64_slurp_symbol_table,
   3811      1.1  christos   bfd_elf64_swap_dyn_in,
   3812      1.1  christos   bfd_elf64_swap_dyn_out,
   3813      1.1  christos   bfd_elf64_swap_reloc_in,
   3814      1.1  christos   bfd_elf64_swap_reloc_out,
   3815      1.1  christos   bfd_elf64_swap_reloca_in,
   3816      1.1  christos   bfd_elf64_swap_reloca_out
   3817      1.1  christos };
   3818      1.1  christos 
   3819  1.1.1.2  christos #define TARGET_BIG_SYM	s390_elf64_vec
   3820      1.1  christos #define TARGET_BIG_NAME	"elf64-s390"
   3821      1.1  christos #define ELF_ARCH	bfd_arch_s390
   3822      1.1  christos #define ELF_TARGET_ID	S390_ELF_DATA
   3823      1.1  christos #define ELF_MACHINE_CODE EM_S390
   3824      1.1  christos #define ELF_MACHINE_ALT1 EM_S390_OLD
   3825      1.1  christos #define ELF_MAXPAGESIZE 0x1000
   3826      1.1  christos 
   3827      1.1  christos #define elf_backend_size_info		s390_elf64_size_info
   3828      1.1  christos 
   3829      1.1  christos #define elf_backend_can_gc_sections	1
   3830      1.1  christos #define elf_backend_can_refcount	1
   3831      1.1  christos #define elf_backend_want_got_plt	1
   3832      1.1  christos #define elf_backend_plt_readonly	1
   3833      1.1  christos #define elf_backend_want_plt_sym	0
   3834      1.1  christos #define elf_backend_got_header_size	24
   3835      1.1  christos #define elf_backend_rela_normal		1
   3836      1.1  christos 
   3837      1.1  christos #define elf_info_to_howto		elf_s390_info_to_howto
   3838      1.1  christos 
   3839      1.1  christos #define bfd_elf64_bfd_is_local_label_name     elf_s390_is_local_label_name
   3840      1.1  christos #define bfd_elf64_bfd_link_hash_table_create  elf_s390_link_hash_table_create
   3841      1.1  christos #define bfd_elf64_bfd_reloc_type_lookup	      elf_s390_reloc_type_lookup
   3842  1.1.1.3  christos #define bfd_elf64_bfd_reloc_name_lookup       elf_s390_reloc_name_lookup
   3843  1.1.1.3  christos #define bfd_elf64_bfd_merge_private_bfd_data  elf64_s390_merge_private_bfd_data
   3844      1.1  christos 
   3845      1.1  christos #define elf_backend_adjust_dynamic_symbol     elf_s390_adjust_dynamic_symbol
   3846      1.1  christos #define elf_backend_check_relocs	      elf_s390_check_relocs
   3847      1.1  christos #define elf_backend_copy_indirect_symbol      elf_s390_copy_indirect_symbol
   3848      1.1  christos #define elf_backend_create_dynamic_sections   elf_s390_create_dynamic_sections
   3849      1.1  christos #define elf_backend_finish_dynamic_sections   elf_s390_finish_dynamic_sections
   3850      1.1  christos #define elf_backend_finish_dynamic_symbol     elf_s390_finish_dynamic_symbol
   3851      1.1  christos #define elf_backend_gc_mark_hook	      elf_s390_gc_mark_hook
   3852      1.1  christos #define elf_backend_gc_sweep_hook	      elf_s390_gc_sweep_hook
   3853      1.1  christos #define elf_backend_reloc_type_class	      elf_s390_reloc_type_class
   3854      1.1  christos #define elf_backend_relocate_section	      elf_s390_relocate_section
   3855      1.1  christos #define elf_backend_size_dynamic_sections     elf_s390_size_dynamic_sections
   3856      1.1  christos #define elf_backend_init_index_section	      _bfd_elf_init_1_index_section
   3857      1.1  christos #define elf_backend_plt_sym_val		      elf_s390_plt_sym_val
   3858      1.1  christos #define elf_backend_add_symbol_hook           elf_s390_add_symbol_hook
   3859  1.1.1.3  christos #define elf_backend_sort_relocs_p             elf_s390_elf_sort_relocs_p
   3860      1.1  christos 
   3861      1.1  christos #define bfd_elf64_mkobject		elf_s390_mkobject
   3862      1.1  christos #define elf_backend_object_p		elf_s390_object_p
   3863      1.1  christos 
   3864      1.1  christos /* Enable ELF64 archive functions.  */
   3865      1.1  christos #define bfd_elf64_archive_functions
   3866      1.1  christos extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
   3867      1.1  christos extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
   3868      1.1  christos 
   3869      1.1  christos #define bfd_elf64_archive_slurp_extended_name_table 	_bfd_archive_coff_slurp_extended_name_table
   3870      1.1  christos #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
   3871      1.1  christos #define bfd_elf64_archive_truncate_arname 		_bfd_archive_coff_truncate_arname
   3872      1.1  christos #define bfd_elf64_archive_read_ar_hdr			_bfd_archive_coff_read_ar_hdr
   3873      1.1  christos #define bfd_elf64_archive_write_ar_hdr			_bfd_archive_coff_write_ar_hdr
   3874      1.1  christos #define bfd_elf64_archive_openr_next_archived_file 	_bfd_archive_coff_openr_next_archived_file
   3875      1.1  christos #define bfd_elf64_archive_get_elt_at_index 		_bfd_archive_coff_get_elt_at_index
   3876      1.1  christos #define bfd_elf64_archive_generic_stat_arch_elt 	_bfd_archive_coff_generic_stat_arch_elt
   3877      1.1  christos #define bfd_elf64_archive_update_armap_timestamp 	_bfd_archive_coff_update_armap_timestamp
   3878      1.1  christos 
   3879      1.1  christos #include "elf64-target.h"
   3880