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elf32-hppa.c revision 1.1.1.8
      1 /* BFD back-end for HP PA-RISC ELF files.
      2    Copyright (C) 1990-2024 Free Software Foundation, Inc.
      3 
      4    Original code by
      5 	Center for Software Science
      6 	Department of Computer Science
      7 	University of Utah
      8    Largely rewritten by Alan Modra <alan (at) linuxcare.com.au>
      9    Naming cleanup by Carlos O'Donell <carlos (at) systemhalted.org>
     10    TLS support written by Randolph Chung <tausq (at) debian.org>
     11 
     12    This file is part of BFD, the Binary File Descriptor library.
     13 
     14    This program is free software; you can redistribute it and/or modify
     15    it under the terms of the GNU General Public License as published by
     16    the Free Software Foundation; either version 3 of the License, or
     17    (at your option) any later version.
     18 
     19    This program is distributed in the hope that it will be useful,
     20    but WITHOUT ANY WARRANTY; without even the implied warranty of
     21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     22    GNU General Public License for more details.
     23 
     24    You should have received a copy of the GNU General Public License
     25    along with this program; if not, write to the Free Software
     26    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     27    MA 02110-1301, USA.  */
     28 
     29 #include "sysdep.h"
     30 #include "bfd.h"
     31 #include "libbfd.h"
     32 #include "elf-bfd.h"
     33 #include "elf/hppa.h"
     34 #include "libhppa.h"
     35 #include "elf32-hppa.h"
     36 #define ARCH_SIZE		32
     37 #include "elf32-hppa.h"
     38 #include "elf-hppa.h"
     39 
     40 /* In order to gain some understanding of code in this file without
     41    knowing all the intricate details of the linker, note the
     42    following:
     43 
     44    Functions named elf32_hppa_* are called by external routines, other
     45    functions are only called locally.  elf32_hppa_* functions appear
     46    in this file more or less in the order in which they are called
     47    from external routines.  eg. elf32_hppa_check_relocs is called
     48    early in the link process, elf32_hppa_finish_dynamic_sections is
     49    one of the last functions.  */
     50 
     51 /* We use two hash tables to hold information for linking PA ELF objects.
     52 
     53    The first is the elf32_hppa_link_hash_table which is derived
     54    from the standard ELF linker hash table.  We use this as a place to
     55    attach other hash tables and static information.
     56 
     57    The second is the stub hash table which is derived from the
     58    base BFD hash table.  The stub hash table holds the information
     59    necessary to build the linker stubs during a link.
     60 
     61    There are a number of different stubs generated by the linker.
     62 
     63    Long branch stub:
     64    :		ldil LR'X,%r1
     65    :		be,n RR'X(%sr4,%r1)
     66 
     67    PIC long branch stub:
     68    :		b,l .+8,%r1
     69    :		addil LR'X - ($PIC_pcrel$0 - 4),%r1
     70    :		be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
     71 
     72    Import stub to call shared library routine from normal object file
     73    (single sub-space version)
     74    :		addil LR'lt_ptr+ltoff,%dp	; get PLT address
     75    :		ldo RR'lt_ptr+ltoff(%r1),%r22   ;
     76    :		ldw 0(%r22),%r21		; get procedure entry point
     77    :		bv %r0(%r21)
     78    :		ldw 4(%r22),%r19		; get new dlt value.
     79 
     80    Import stub to call shared library routine from shared library
     81    (single sub-space version)
     82    :		addil LR'ltoff,%r19		; get PLT address
     83    :		ldo RR'ltoff(%r1),%r22
     84    :		ldw 0(%r22),%r21		; get procedure entry point
     85    :		bv %r0(%r21)
     86    :		ldw 4(%r22),%r19		; get new dlt value.
     87 
     88    Import stub to call shared library routine from normal object file
     89    (multiple sub-space support)
     90    :		addil LR'lt_ptr+ltoff,%dp	; get PLT address
     91    :		ldo RR'lt_ptr+ltoff(%r1),%r22   ;
     92    :		ldw 0(%r22),%r21		; get procedure entry point
     93    :		ldsid (%r21),%r1		; get target sid
     94    :		ldw 4(%r22),%r19		; get new dlt value.
     95    :		mtsp %r1,%sr0
     96    :		be 0(%sr0,%r21)			; branch to target
     97    :		stw %rp,-24(%sp)		; save rp
     98 
     99    Import stub to call shared library routine from shared library
    100    (multiple sub-space support)
    101    :		addil LR'ltoff,%r19		; get PLT address
    102    :		ldo RR'ltoff(%r1),%r22
    103    :		ldw 0(%r22),%r21		; get procedure entry point
    104    :		ldsid (%r21),%r1		; get target sid
    105    :		ldw 4(%r22),%r19		; get new dlt value.
    106    :		mtsp %r1,%sr0
    107    :		be 0(%sr0,%r21)			; branch to target
    108    :		stw %rp,-24(%sp)		; save rp
    109 
    110    Export stub to return from shared lib routine (multiple sub-space support)
    111    One of these is created for each exported procedure in a shared
    112    library (and stored in the shared lib).  Shared lib routines are
    113    called via the first instruction in the export stub so that we can
    114    do an inter-space return.  Not required for single sub-space.
    115    :		bl,n X,%rp			; trap the return
    116    :		nop
    117    :		ldw -24(%sp),%rp		; restore the original rp
    118    :		ldsid (%rp),%r1
    119    :		mtsp %r1,%sr0
    120    :		be,n 0(%sr0,%rp)		; inter-space return.  */
    121 
    122 
    123 /* Variable names follow a coding style.
    124    Please follow this (Apps Hungarian) style:
    125 
    126    Structure/Variable			Prefix
    127    elf_link_hash_table			"etab"
    128    elf_link_hash_entry			"eh"
    129 
    130    elf32_hppa_link_hash_table		"htab"
    131    elf32_hppa_link_hash_entry		"hh"
    132 
    133    bfd_hash_table			"btab"
    134    bfd_hash_entry			"bh"
    135 
    136    bfd_hash_table containing stubs	"bstab"
    137    elf32_hppa_stub_hash_entry		"hsh"
    138 
    139    Always remember to use GNU Coding Style. */
    140 
    141 #define PLT_ENTRY_SIZE 8
    142 #define GOT_ENTRY_SIZE 4
    143 #define LONG_BRANCH_STUB_SIZE 8
    144 #define LONG_BRANCH_SHARED_STUB_SIZE 12
    145 #define IMPORT_STUB_SIZE 20
    146 #define IMPORT_SHARED_STUB_SIZE 32
    147 #define EXPORT_STUB_SIZE 24
    148 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
    149 
    150 static const bfd_byte plt_stub[] =
    151 {
    152   0x0e, 0x80, 0x10, 0x95,  /* 1: ldw	0(%r20),%r21		*/
    153   0xea, 0xa0, 0xc0, 0x00,  /*    bv	%r0(%r21)		*/
    154   0x0e, 0x88, 0x10, 0x95,  /*    ldw	4(%r20),%r21		*/
    155 #define PLT_STUB_ENTRY (3*4)
    156   0xea, 0x9f, 0x1f, 0xdd,  /*    b,l	1b,%r20			*/
    157   0xd6, 0x80, 0x1c, 0x1e,  /*    depi	0,31,2,%r20		*/
    158   0x00, 0xc0, 0xff, 0xee,  /* 9: .word	fixup_func		*/
    159   0xde, 0xad, 0xbe, 0xef   /*    .word	fixup_ltp		*/
    160 };
    161 
    162 /* Section name for stubs is the associated section name plus this
    163    string.  */
    164 #define STUB_SUFFIX ".stub"
    165 
    166 /* We don't need to copy certain PC- or GP-relative dynamic relocs
    167    into a shared object's dynamic section.  All the relocs of the
    168    limited class we are interested in, are absolute.  */
    169 #ifndef RELATIVE_DYNRELOCS
    170 #define RELATIVE_DYNRELOCS 0
    171 #define IS_ABSOLUTE_RELOC(r_type) 1
    172 #define pc_dynrelocs(hh) 0
    173 #endif
    174 
    175 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
    176    copying dynamic variables from a shared lib into an app's dynbss
    177    section, and instead use a dynamic relocation to point into the
    178    shared lib.  */
    179 #define ELIMINATE_COPY_RELOCS 1
    180 
    181 enum elf32_hppa_stub_type
    182 {
    183   hppa_stub_long_branch,
    184   hppa_stub_long_branch_shared,
    185   hppa_stub_import,
    186   hppa_stub_import_shared,
    187   hppa_stub_export,
    188   hppa_stub_none
    189 };
    190 
    191 struct elf32_hppa_stub_hash_entry
    192 {
    193   /* Base hash table entry structure.  */
    194   struct bfd_hash_entry bh_root;
    195 
    196   /* The stub section.  */
    197   asection *stub_sec;
    198 
    199   /* Offset within stub_sec of the beginning of this stub.  */
    200   bfd_vma stub_offset;
    201 
    202   /* Given the symbol's value and its section we can determine its final
    203      value when building the stubs (so the stub knows where to jump.  */
    204   bfd_vma target_value;
    205   asection *target_section;
    206 
    207   enum elf32_hppa_stub_type stub_type;
    208 
    209   /* The symbol table entry, if any, that this was derived from.  */
    210   struct elf32_hppa_link_hash_entry *hh;
    211 
    212   /* Where this stub is being called from, or, in the case of combined
    213      stub sections, the first input section in the group.  */
    214   asection *id_sec;
    215 };
    216 
    217 enum _tls_type
    218   {
    219     GOT_UNKNOWN = 0,
    220     GOT_NORMAL = 1,
    221     GOT_TLS_GD = 2,
    222     GOT_TLS_LDM = 4,
    223     GOT_TLS_IE = 8
    224   };
    225 
    226 struct elf32_hppa_link_hash_entry
    227 {
    228   struct elf_link_hash_entry eh;
    229 
    230   /* A pointer to the most recently used stub hash entry against this
    231      symbol.  */
    232   struct elf32_hppa_stub_hash_entry *hsh_cache;
    233 
    234   ENUM_BITFIELD (_tls_type) tls_type : 8;
    235 
    236   /* Set if this symbol is used by a plabel reloc.  */
    237   unsigned int plabel:1;
    238 };
    239 
    240 struct elf32_hppa_link_hash_table
    241 {
    242   /* The main hash table.  */
    243   struct elf_link_hash_table etab;
    244 
    245   /* The stub hash table.  */
    246   struct bfd_hash_table bstab;
    247 
    248   /* Linker stub bfd.  */
    249   bfd *stub_bfd;
    250 
    251   /* Linker call-backs.  */
    252   asection * (*add_stub_section) (const char *, asection *);
    253   void (*layout_sections_again) (void);
    254 
    255   /* Array to keep track of which stub sections have been created, and
    256      information on stub grouping.  */
    257   struct map_stub
    258   {
    259     /* This is the section to which stubs in the group will be
    260        attached.  */
    261     asection *link_sec;
    262     /* The stub section.  */
    263     asection *stub_sec;
    264   } *stub_group;
    265 
    266   /* Assorted information used by elf32_hppa_size_stubs.  */
    267   unsigned int bfd_count;
    268   unsigned int top_index;
    269   asection **input_list;
    270   Elf_Internal_Sym **all_local_syms;
    271 
    272   /* Used during a final link to store the base of the text and data
    273      segments so that we can perform SEGREL relocations.  */
    274   bfd_vma text_segment_base;
    275   bfd_vma data_segment_base;
    276 
    277   /* Whether we support multiple sub-spaces for shared libs.  */
    278   unsigned int multi_subspace:1;
    279 
    280   /* Flags set when various size branches are detected.  Used to
    281      select suitable defaults for the stub group size.  */
    282   unsigned int has_12bit_branch:1;
    283   unsigned int has_17bit_branch:1;
    284   unsigned int has_22bit_branch:1;
    285 
    286   /* Set if we need a .plt stub to support lazy dynamic linking.  */
    287   unsigned int need_plt_stub:1;
    288 
    289   /* Data for LDM relocations.  */
    290   union
    291   {
    292     bfd_signed_vma refcount;
    293     bfd_vma offset;
    294   } tls_ldm_got;
    295 };
    296 
    297 /* Various hash macros and functions.  */
    298 #define hppa_link_hash_table(p) \
    299   ((is_elf_hash_table ((p)->hash)					\
    300     && elf_hash_table_id (elf_hash_table (p)) == HPPA32_ELF_DATA)	\
    301    ? (struct elf32_hppa_link_hash_table *) (p)->hash : NULL)
    302 
    303 #define hppa_elf_hash_entry(ent) \
    304   ((struct elf32_hppa_link_hash_entry *)(ent))
    305 
    306 #define hppa_stub_hash_entry(ent) \
    307   ((struct elf32_hppa_stub_hash_entry *)(ent))
    308 
    309 #define hppa_stub_hash_lookup(table, string, create, copy) \
    310   ((struct elf32_hppa_stub_hash_entry *) \
    311    bfd_hash_lookup ((table), (string), (create), (copy)))
    312 
    313 #define hppa_elf_local_got_tls_type(abfd) \
    314   ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
    315 
    316 #define hh_name(hh) \
    317   (hh ? hh->eh.root.root.string : "<undef>")
    318 
    319 #define eh_name(eh) \
    320   (eh ? eh->root.root.string : "<undef>")
    321 
    322 /* Assorted hash table functions.  */
    323 
    324 /* Initialize an entry in the stub hash table.  */
    325 
    326 static struct bfd_hash_entry *
    327 stub_hash_newfunc (struct bfd_hash_entry *entry,
    328 		   struct bfd_hash_table *table,
    329 		   const char *string)
    330 {
    331   /* Allocate the structure if it has not already been allocated by a
    332      subclass.  */
    333   if (entry == NULL)
    334     {
    335       entry = bfd_hash_allocate (table,
    336 				 sizeof (struct elf32_hppa_stub_hash_entry));
    337       if (entry == NULL)
    338 	return entry;
    339     }
    340 
    341   /* Call the allocation method of the superclass.  */
    342   entry = bfd_hash_newfunc (entry, table, string);
    343   if (entry != NULL)
    344     {
    345       struct elf32_hppa_stub_hash_entry *hsh;
    346 
    347       /* Initialize the local fields.  */
    348       hsh = hppa_stub_hash_entry (entry);
    349       hsh->stub_sec = NULL;
    350       hsh->stub_offset = 0;
    351       hsh->target_value = 0;
    352       hsh->target_section = NULL;
    353       hsh->stub_type = hppa_stub_long_branch;
    354       hsh->hh = NULL;
    355       hsh->id_sec = NULL;
    356     }
    357 
    358   return entry;
    359 }
    360 
    361 /* Initialize an entry in the link hash table.  */
    362 
    363 static struct bfd_hash_entry *
    364 hppa_link_hash_newfunc (struct bfd_hash_entry *entry,
    365 			struct bfd_hash_table *table,
    366 			const char *string)
    367 {
    368   /* Allocate the structure if it has not already been allocated by a
    369      subclass.  */
    370   if (entry == NULL)
    371     {
    372       entry = bfd_hash_allocate (table,
    373 				 sizeof (struct elf32_hppa_link_hash_entry));
    374       if (entry == NULL)
    375 	return entry;
    376     }
    377 
    378   /* Call the allocation method of the superclass.  */
    379   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
    380   if (entry != NULL)
    381     {
    382       struct elf32_hppa_link_hash_entry *hh;
    383 
    384       /* Initialize the local fields.  */
    385       hh = hppa_elf_hash_entry (entry);
    386       hh->hsh_cache = NULL;
    387       hh->plabel = 0;
    388       hh->tls_type = GOT_UNKNOWN;
    389     }
    390 
    391   return entry;
    392 }
    393 
    394 /* Free the derived linker hash table.  */
    395 
    396 static void
    397 elf32_hppa_link_hash_table_free (bfd *obfd)
    398 {
    399   struct elf32_hppa_link_hash_table *htab
    400     = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
    401 
    402   bfd_hash_table_free (&htab->bstab);
    403   _bfd_elf_link_hash_table_free (obfd);
    404 }
    405 
    406 /* Create the derived linker hash table.  The PA ELF port uses the derived
    407    hash table to keep information specific to the PA ELF linker (without
    408    using static variables).  */
    409 
    410 static struct bfd_link_hash_table *
    411 elf32_hppa_link_hash_table_create (bfd *abfd)
    412 {
    413   struct elf32_hppa_link_hash_table *htab;
    414   size_t amt = sizeof (*htab);
    415 
    416   htab = bfd_zmalloc (amt);
    417   if (htab == NULL)
    418     return NULL;
    419 
    420   if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
    421 				      sizeof (struct elf32_hppa_link_hash_entry),
    422 				      HPPA32_ELF_DATA))
    423     {
    424       free (htab);
    425       return NULL;
    426     }
    427 
    428   /* Init the stub hash table too.  */
    429   if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
    430 			    sizeof (struct elf32_hppa_stub_hash_entry)))
    431     {
    432       _bfd_elf_link_hash_table_free (abfd);
    433       return NULL;
    434     }
    435   htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
    436   htab->etab.dt_pltgot_required = true;
    437 
    438   htab->text_segment_base = (bfd_vma) -1;
    439   htab->data_segment_base = (bfd_vma) -1;
    440   return &htab->etab.root;
    441 }
    442 
    443 /* Initialize the linker stubs BFD so that we can use it for linker
    444    created dynamic sections.  */
    445 
    446 void
    447 elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
    448 {
    449   struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
    450 
    451   elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32;
    452   htab->etab.dynobj = abfd;
    453 }
    454 
    455 /* Build a name for an entry in the stub hash table.  */
    456 
    457 static char *
    458 hppa_stub_name (const asection *input_section,
    459 		const asection *sym_sec,
    460 		const struct elf32_hppa_link_hash_entry *hh,
    461 		const Elf_Internal_Rela *rela)
    462 {
    463   char *stub_name;
    464   bfd_size_type len;
    465 
    466   if (hh)
    467     {
    468       len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
    469       stub_name = bfd_malloc (len);
    470       if (stub_name != NULL)
    471 	sprintf (stub_name, "%08x_%s+%x",
    472 		 input_section->id & 0xffffffff,
    473 		 hh_name (hh),
    474 		 (int) rela->r_addend & 0xffffffff);
    475     }
    476   else
    477     {
    478       len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
    479       stub_name = bfd_malloc (len);
    480       if (stub_name != NULL)
    481 	sprintf (stub_name, "%08x_%x:%x+%x",
    482 		 input_section->id & 0xffffffff,
    483 		 sym_sec->id & 0xffffffff,
    484 		 (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
    485 		 (int) rela->r_addend & 0xffffffff);
    486     }
    487   return stub_name;
    488 }
    489 
    490 /* Look up an entry in the stub hash.  Stub entries are cached because
    491    creating the stub name takes a bit of time.  */
    492 
    493 static struct elf32_hppa_stub_hash_entry *
    494 hppa_get_stub_entry (const asection *input_section,
    495 		     const asection *sym_sec,
    496 		     struct elf32_hppa_link_hash_entry *hh,
    497 		     const Elf_Internal_Rela *rela,
    498 		     struct elf32_hppa_link_hash_table *htab)
    499 {
    500   struct elf32_hppa_stub_hash_entry *hsh_entry;
    501   const asection *id_sec;
    502 
    503   /* If this input section is part of a group of sections sharing one
    504      stub section, then use the id of the first section in the group.
    505      Stub names need to include a section id, as there may well be
    506      more than one stub used to reach say, printf, and we need to
    507      distinguish between them.  */
    508   id_sec = htab->stub_group[input_section->id].link_sec;
    509   if (id_sec == NULL)
    510     return NULL;
    511 
    512   if (hh != NULL && hh->hsh_cache != NULL
    513       && hh->hsh_cache->hh == hh
    514       && hh->hsh_cache->id_sec == id_sec)
    515     {
    516       hsh_entry = hh->hsh_cache;
    517     }
    518   else
    519     {
    520       char *stub_name;
    521 
    522       stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
    523       if (stub_name == NULL)
    524 	return NULL;
    525 
    526       hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
    527 					  stub_name, false, false);
    528       if (hh != NULL)
    529 	hh->hsh_cache = hsh_entry;
    530 
    531       free (stub_name);
    532     }
    533 
    534   return hsh_entry;
    535 }
    536 
    537 /* Add a new stub entry to the stub hash.  Not all fields of the new
    538    stub entry are initialised.  */
    539 
    540 static struct elf32_hppa_stub_hash_entry *
    541 hppa_add_stub (const char *stub_name,
    542 	       asection *section,
    543 	       struct elf32_hppa_link_hash_table *htab)
    544 {
    545   asection *link_sec;
    546   asection *stub_sec;
    547   struct elf32_hppa_stub_hash_entry *hsh;
    548 
    549   link_sec = htab->stub_group[section->id].link_sec;
    550   stub_sec = htab->stub_group[section->id].stub_sec;
    551   if (stub_sec == NULL)
    552     {
    553       stub_sec = htab->stub_group[link_sec->id].stub_sec;
    554       if (stub_sec == NULL)
    555 	{
    556 	  size_t namelen;
    557 	  bfd_size_type len;
    558 	  char *s_name;
    559 
    560 	  namelen = strlen (link_sec->name);
    561 	  len = namelen + sizeof (STUB_SUFFIX);
    562 	  s_name = bfd_alloc (htab->stub_bfd, len);
    563 	  if (s_name == NULL)
    564 	    return NULL;
    565 
    566 	  memcpy (s_name, link_sec->name, namelen);
    567 	  memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
    568 	  stub_sec = (*htab->add_stub_section) (s_name, link_sec);
    569 	  if (stub_sec == NULL)
    570 	    return NULL;
    571 	  htab->stub_group[link_sec->id].stub_sec = stub_sec;
    572 	}
    573       htab->stub_group[section->id].stub_sec = stub_sec;
    574     }
    575 
    576   /* Enter this entry into the linker stub hash table.  */
    577   hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
    578 				      true, false);
    579   if (hsh == NULL)
    580     {
    581       /* xgettext:c-format */
    582       _bfd_error_handler (_("%pB: cannot create stub entry %s"),
    583 			  section->owner, stub_name);
    584       return NULL;
    585     }
    586 
    587   hsh->stub_sec = stub_sec;
    588   hsh->stub_offset = 0;
    589   hsh->id_sec = link_sec;
    590   return hsh;
    591 }
    592 
    593 /* Determine the type of stub needed, if any, for a call.  */
    594 
    595 static enum elf32_hppa_stub_type
    596 hppa_type_of_stub (asection *input_sec,
    597 		   const Elf_Internal_Rela *rela,
    598 		   struct elf32_hppa_link_hash_entry *hh,
    599 		   bfd_vma destination,
    600 		   struct bfd_link_info *info)
    601 {
    602   bfd_vma location;
    603   bfd_vma branch_offset;
    604   bfd_vma max_branch_offset;
    605   unsigned int r_type;
    606 
    607   if (hh != NULL
    608       && hh->eh.plt.offset != (bfd_vma) -1
    609       && hh->eh.dynindx != -1
    610       && !hh->plabel
    611       && (bfd_link_pic (info)
    612 	  || !hh->eh.def_regular
    613 	  || hh->eh.root.type == bfd_link_hash_defweak))
    614     {
    615       /* We need an import stub.  Decide between hppa_stub_import
    616 	 and hppa_stub_import_shared later.  */
    617       return hppa_stub_import;
    618     }
    619 
    620   if (destination == (bfd_vma) -1)
    621     return hppa_stub_none;
    622 
    623   /* Determine where the call point is.  */
    624   location = (input_sec->output_offset
    625 	      + input_sec->output_section->vma
    626 	      + rela->r_offset);
    627 
    628   branch_offset = destination - location - 8;
    629   r_type = ELF32_R_TYPE (rela->r_info);
    630 
    631   /* Determine if a long branch stub is needed.  parisc branch offsets
    632      are relative to the second instruction past the branch, ie. +8
    633      bytes on from the branch instruction location.  The offset is
    634      signed and counts in units of 4 bytes.  */
    635   if (r_type == (unsigned int) R_PARISC_PCREL17F)
    636     max_branch_offset = (1 << (17 - 1)) << 2;
    637 
    638   else if (r_type == (unsigned int) R_PARISC_PCREL12F)
    639     max_branch_offset = (1 << (12 - 1)) << 2;
    640 
    641   else /* R_PARISC_PCREL22F.  */
    642     max_branch_offset = (1 << (22 - 1)) << 2;
    643 
    644   if (branch_offset + max_branch_offset >= 2*max_branch_offset)
    645     return hppa_stub_long_branch;
    646 
    647   return hppa_stub_none;
    648 }
    649 
    650 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
    651    IN_ARG contains the link info pointer.  */
    652 
    653 #define LDIL_R1		0x20200000	/* ldil  LR'XXX,%r1		*/
    654 #define BE_SR4_R1	0xe0202002	/* be,n  RR'XXX(%sr4,%r1)	*/
    655 
    656 #define BL_R1		0xe8200000	/* b,l   .+8,%r1		*/
    657 #define ADDIL_R1	0x28200000	/* addil LR'XXX,%r1,%r1		*/
    658 #define DEPI_R1		0xd4201c1e	/* depi  0,31,2,%r1		*/
    659 
    660 #define ADDIL_DP	0x2b600000	/* addil LR'XXX,%dp,%r1		*/
    661 #define LDW_R1_R21	0x48350000	/* ldw   RR'XXX(%sr0,%r1),%r21	*/
    662 #define BV_R0_R21	0xeaa0c000	/* bv    %r0(%r21)		*/
    663 #define LDW_R1_R19	0x48330000	/* ldw   RR'XXX(%sr0,%r1),%r19	*/
    664 
    665 #define ADDIL_R19	0x2a600000	/* addil LR'XXX,%r19,%r1	*/
    666 #define LDW_R1_DP	0x483b0000	/* ldw   RR'XXX(%sr0,%r1),%dp	*/
    667 
    668 #define LDO_R1_R22	0x34360000	/* ldo   RR'XXX(%r1),%r22	*/
    669 #define LDW_R22_R21	0x0ec01095	/* ldw   0(%r22),%r21		*/
    670 #define LDW_R22_R19	0x0ec81093	/* ldw   4(%r22),%r19		*/
    671 
    672 #define LDSID_R21_R1	0x02a010a1	/* ldsid (%sr0,%r21),%r1	*/
    673 #define MTSP_R1		0x00011820	/* mtsp  %r1,%sr0		*/
    674 #define BE_SR0_R21	0xe2a00000	/* be    0(%sr0,%r21)		*/
    675 #define STW_RP		0x6bc23fd1	/* stw   %rp,-24(%sr0,%sp)	*/
    676 
    677 #define BL22_RP		0xe800a002	/* b,l,n XXX,%rp		*/
    678 #define BL_RP		0xe8400002	/* b,l,n XXX,%rp		*/
    679 #define NOP		0x08000240	/* nop				*/
    680 #define LDW_RP		0x4bc23fd1	/* ldw   -24(%sr0,%sp),%rp	*/
    681 #define LDSID_RP_R1	0x004010a1	/* ldsid (%sr0,%rp),%r1		*/
    682 #define BE_SR0_RP	0xe0400002	/* be,n  0(%sr0,%rp)		*/
    683 
    684 #ifndef R19_STUBS
    685 #define R19_STUBS 1
    686 #endif
    687 
    688 #if R19_STUBS
    689 #define LDW_R1_DLT	LDW_R1_R19
    690 #else
    691 #define LDW_R1_DLT	LDW_R1_DP
    692 #endif
    693 
    694 static bool
    695 hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
    696 {
    697   struct elf32_hppa_stub_hash_entry *hsh;
    698   struct bfd_link_info *info;
    699   struct elf32_hppa_link_hash_table *htab;
    700   asection *stub_sec;
    701   bfd *stub_bfd;
    702   bfd_byte *loc;
    703   bfd_vma sym_value;
    704   bfd_vma insn;
    705   bfd_vma off;
    706   int val;
    707   int size;
    708 
    709   /* Massage our args to the form they really have.  */
    710   hsh = hppa_stub_hash_entry (bh);
    711   info = (struct bfd_link_info *)in_arg;
    712 
    713   htab = hppa_link_hash_table (info);
    714   if (htab == NULL)
    715     return false;
    716 
    717   stub_sec = hsh->stub_sec;
    718 
    719   /* Make a note of the offset within the stubs for this entry.  */
    720   hsh->stub_offset = stub_sec->size;
    721   loc = stub_sec->contents + hsh->stub_offset;
    722 
    723   stub_bfd = stub_sec->owner;
    724 
    725   switch (hsh->stub_type)
    726     {
    727     case hppa_stub_long_branch:
    728       /* Fail if the target section could not be assigned to an output
    729 	 section.  The user should fix his linker script.  */
    730       if (hsh->target_section->output_section == NULL
    731 	  && info->non_contiguous_regions)
    732 	info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output "
    733 				  "section. Retry without "
    734 				  "--enable-non-contiguous-regions.\n"),
    735 				hsh->target_section);
    736 
    737       /* Create the long branch.  A long branch is formed with "ldil"
    738 	 loading the upper bits of the target address into a register,
    739 	 then branching with "be" which adds in the lower bits.
    740 	 The "be" has its delay slot nullified.  */
    741       sym_value = (hsh->target_value
    742 		   + hsh->target_section->output_offset
    743 		   + hsh->target_section->output_section->vma);
    744 
    745       val = hppa_field_adjust (sym_value, 0, e_lrsel);
    746       insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
    747       bfd_put_32 (stub_bfd, insn, loc);
    748 
    749       val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
    750       insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
    751       bfd_put_32 (stub_bfd, insn, loc + 4);
    752 
    753       size = LONG_BRANCH_STUB_SIZE;
    754       break;
    755 
    756     case hppa_stub_long_branch_shared:
    757       /* Fail if the target section could not be assigned to an output
    758 	 section.  The user should fix his linker script.  */
    759       if (hsh->target_section->output_section == NULL
    760 	  && info->non_contiguous_regions)
    761 	info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output "
    762 				  "section. Retry without "
    763 				  "--enable-non-contiguous-regions.\n"),
    764 				hsh->target_section);
    765 
    766       /* Branches are relative.  This is where we are going to.  */
    767       sym_value = (hsh->target_value
    768 		   + hsh->target_section->output_offset
    769 		   + hsh->target_section->output_section->vma);
    770 
    771       /* And this is where we are coming from, more or less.  */
    772       sym_value -= (hsh->stub_offset
    773 		    + stub_sec->output_offset
    774 		    + stub_sec->output_section->vma);
    775 
    776       bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
    777       val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
    778       insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
    779       bfd_put_32 (stub_bfd, insn, loc + 4);
    780 
    781       val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
    782       insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
    783       bfd_put_32 (stub_bfd, insn, loc + 8);
    784       size = LONG_BRANCH_SHARED_STUB_SIZE;
    785       break;
    786 
    787     case hppa_stub_import:
    788     case hppa_stub_import_shared:
    789       off = hsh->hh->eh.plt.offset;
    790       if (off >= (bfd_vma) -2)
    791 	abort ();
    792 
    793       off &= ~ (bfd_vma) 1;
    794       sym_value = (off
    795 		   + htab->etab.splt->output_offset
    796 		   + htab->etab.splt->output_section->vma
    797 		   - elf_gp (htab->etab.splt->output_section->owner));
    798 
    799       insn = ADDIL_DP;
    800 #if R19_STUBS
    801       if (hsh->stub_type == hppa_stub_import_shared)
    802 	insn = ADDIL_R19;
    803 #endif
    804 
    805       /* Load function descriptor address into register %r22.  It is
    806 	 sometimes needed for lazy binding.  */
    807       val = hppa_field_adjust (sym_value, 0, e_lrsel),
    808       insn = hppa_rebuild_insn ((int) insn, val, 21);
    809       bfd_put_32 (stub_bfd, insn, loc);
    810 
    811       val = hppa_field_adjust (sym_value, 0, e_rrsel);
    812       insn = hppa_rebuild_insn ((int) LDO_R1_R22, val, 14);
    813       bfd_put_32 (stub_bfd, insn, loc + 4);
    814 
    815       bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R21, loc + 8);
    816 
    817       if (htab->multi_subspace)
    818 	{
    819 	  bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
    820 	  bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19,  loc + 16);
    821 	  bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1,      loc + 20);
    822 	  bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21,   loc + 24);
    823 	  bfd_put_32 (stub_bfd, (bfd_vma) STW_RP,       loc + 28);
    824 
    825 	  size = IMPORT_SHARED_STUB_SIZE;
    826 	}
    827       else
    828 	{
    829 	  bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 12);
    830 	  bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16);
    831 
    832 	  size = IMPORT_STUB_SIZE;
    833 	}
    834 
    835       break;
    836 
    837     case hppa_stub_export:
    838       /* Fail if the target section could not be assigned to an output
    839 	 section.  The user should fix his linker script.  */
    840       if (hsh->target_section->output_section == NULL
    841 	  && info->non_contiguous_regions)
    842 	info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output "
    843 				  "section. Retry without "
    844 				  "--enable-non-contiguous-regions.\n"),
    845 				hsh->target_section);
    846 
    847       /* Branches are relative.  This is where we are going to.  */
    848       sym_value = (hsh->target_value
    849 		   + hsh->target_section->output_offset
    850 		   + hsh->target_section->output_section->vma);
    851 
    852       /* And this is where we are coming from.  */
    853       sym_value -= (hsh->stub_offset
    854 		    + stub_sec->output_offset
    855 		    + stub_sec->output_section->vma);
    856 
    857       if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
    858 	  && (!htab->has_22bit_branch
    859 	      || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
    860 	{
    861 	  _bfd_error_handler
    862 	    /* xgettext:c-format */
    863 	    (_("%pB(%pA+%#" PRIx64 "): "
    864 	       "cannot reach %s, recompile with -ffunction-sections"),
    865 	     hsh->target_section->owner,
    866 	     stub_sec,
    867 	     (uint64_t) hsh->stub_offset,
    868 	     hsh->bh_root.string);
    869 	  bfd_set_error (bfd_error_bad_value);
    870 	  return false;
    871 	}
    872 
    873       val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
    874       if (!htab->has_22bit_branch)
    875 	insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
    876       else
    877 	insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
    878       bfd_put_32 (stub_bfd, insn, loc);
    879 
    880       bfd_put_32 (stub_bfd, (bfd_vma) NOP,	   loc + 4);
    881       bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP,      loc + 8);
    882       bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
    883       bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1,     loc + 16);
    884       bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP,   loc + 20);
    885 
    886       /* Point the function symbol at the stub.  */
    887       hsh->hh->eh.root.u.def.section = stub_sec;
    888       hsh->hh->eh.root.u.def.value = stub_sec->size;
    889 
    890       size = EXPORT_STUB_SIZE;
    891       break;
    892 
    893     default:
    894       BFD_FAIL ();
    895       return false;
    896     }
    897 
    898   stub_sec->size += size;
    899   return true;
    900 }
    901 
    902 #undef LDIL_R1
    903 #undef BE_SR4_R1
    904 #undef BL_R1
    905 #undef ADDIL_R1
    906 #undef DEPI_R1
    907 #undef LDW_R1_R21
    908 #undef LDW_R1_DLT
    909 #undef LDW_R1_R19
    910 #undef ADDIL_R19
    911 #undef LDW_R1_DP
    912 #undef LDSID_R21_R1
    913 #undef MTSP_R1
    914 #undef BE_SR0_R21
    915 #undef STW_RP
    916 #undef BV_R0_R21
    917 #undef BL_RP
    918 #undef NOP
    919 #undef LDW_RP
    920 #undef LDSID_RP_R1
    921 #undef BE_SR0_RP
    922 
    923 /* As above, but don't actually build the stub.  Just bump offset so
    924    we know stub section sizes.  */
    925 
    926 static bool
    927 hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
    928 {
    929   struct elf32_hppa_stub_hash_entry *hsh;
    930   struct elf32_hppa_link_hash_table *htab;
    931   int size;
    932 
    933   /* Massage our args to the form they really have.  */
    934   hsh = hppa_stub_hash_entry (bh);
    935   htab = in_arg;
    936 
    937   if (hsh->stub_type == hppa_stub_long_branch)
    938     size = LONG_BRANCH_STUB_SIZE;
    939   else if (hsh->stub_type == hppa_stub_long_branch_shared)
    940     size = LONG_BRANCH_SHARED_STUB_SIZE;
    941   else if (hsh->stub_type == hppa_stub_export)
    942     size = EXPORT_STUB_SIZE;
    943   else /* hppa_stub_import or hppa_stub_import_shared.  */
    944     {
    945       if (htab->multi_subspace)
    946 	size = IMPORT_SHARED_STUB_SIZE;
    947       else
    948 	size = IMPORT_STUB_SIZE;
    949     }
    950 
    951   hsh->stub_sec->size += size;
    952   return true;
    953 }
    954 
    955 /* Return nonzero if ABFD represents an HPPA ELF32 file.
    956    Additionally we set the default architecture and machine.  */
    957 
    958 static bool
    959 elf32_hppa_object_p (bfd *abfd)
    960 {
    961   Elf_Internal_Ehdr * i_ehdrp;
    962   unsigned int flags;
    963 
    964   i_ehdrp = elf_elfheader (abfd);
    965   if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
    966     {
    967       /* GCC on hppa-linux produces binaries with OSABI=GNU,
    968 	 but the kernel produces corefiles with OSABI=SysV.  */
    969       if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
    970 	  i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
    971 	return false;
    972     }
    973   else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
    974     {
    975       /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
    976 	 but the kernel produces corefiles with OSABI=SysV.  */
    977       if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
    978 	  i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
    979 	return false;
    980     }
    981   else
    982     {
    983       if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
    984 	return false;
    985     }
    986 
    987   flags = i_ehdrp->e_flags;
    988   switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
    989     {
    990     case EFA_PARISC_1_0:
    991       return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
    992     case EFA_PARISC_1_1:
    993       return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
    994     case EFA_PARISC_2_0:
    995       return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
    996     case EFA_PARISC_2_0 | EF_PARISC_WIDE:
    997       return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
    998     }
    999   return true;
   1000 }
   1001 
   1002 /* Create the .plt and .got sections, and set up our hash table
   1003    short-cuts to various dynamic sections.  */
   1004 
   1005 static bool
   1006 elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
   1007 {
   1008   struct elf32_hppa_link_hash_table *htab;
   1009   struct elf_link_hash_entry *eh;
   1010 
   1011   /* Don't try to create the .plt and .got twice.  */
   1012   htab = hppa_link_hash_table (info);
   1013   if (htab == NULL)
   1014     return false;
   1015   if (htab->etab.splt != NULL)
   1016     return true;
   1017 
   1018   /* Call the generic code to do most of the work.  */
   1019   if (! _bfd_elf_create_dynamic_sections (abfd, info))
   1020     return false;
   1021 
   1022   /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
   1023      application, because __canonicalize_funcptr_for_compare needs it.  */
   1024   eh = elf_hash_table (info)->hgot;
   1025   eh->forced_local = 0;
   1026   eh->other = STV_DEFAULT;
   1027   return bfd_elf_link_record_dynamic_symbol (info, eh);
   1028 }
   1029 
   1030 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
   1031 
   1032 static void
   1033 elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
   1034 				 struct elf_link_hash_entry *eh_dir,
   1035 				 struct elf_link_hash_entry *eh_ind)
   1036 {
   1037   struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
   1038 
   1039   hh_dir = hppa_elf_hash_entry (eh_dir);
   1040   hh_ind = hppa_elf_hash_entry (eh_ind);
   1041 
   1042   if (eh_ind->root.type == bfd_link_hash_indirect)
   1043     {
   1044       hh_dir->plabel |= hh_ind->plabel;
   1045       hh_dir->tls_type |= hh_ind->tls_type;
   1046       hh_ind->tls_type = GOT_UNKNOWN;
   1047     }
   1048 
   1049   _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
   1050 }
   1051 
   1052 static int
   1053 elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
   1054 				int r_type, int is_local ATTRIBUTE_UNUSED)
   1055 {
   1056   /* For now we don't support linker optimizations.  */
   1057   return r_type;
   1058 }
   1059 
   1060 /* Return a pointer to the local GOT, PLT and TLS reference counts
   1061    for ABFD.  Returns NULL if the storage allocation fails.  */
   1062 
   1063 static bfd_signed_vma *
   1064 hppa32_elf_local_refcounts (bfd *abfd)
   1065 {
   1066   Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   1067   bfd_signed_vma *local_refcounts;
   1068 
   1069   local_refcounts = elf_local_got_refcounts (abfd);
   1070   if (local_refcounts == NULL)
   1071     {
   1072       bfd_size_type size;
   1073 
   1074       /* Allocate space for local GOT and PLT reference
   1075 	 counts.  Done this way to save polluting elf_obj_tdata
   1076 	 with another target specific pointer.  */
   1077       size = symtab_hdr->sh_info;
   1078       size *= 2 * sizeof (bfd_signed_vma);
   1079       /* Add in space to store the local GOT TLS types.  */
   1080       size += symtab_hdr->sh_info;
   1081       local_refcounts = bfd_zalloc (abfd, size);
   1082       if (local_refcounts == NULL)
   1083 	return NULL;
   1084       elf_local_got_refcounts (abfd) = local_refcounts;
   1085       memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
   1086 	      symtab_hdr->sh_info);
   1087     }
   1088   return local_refcounts;
   1089 }
   1090 
   1091 
   1092 /* Look through the relocs for a section during the first phase, and
   1093    calculate needed space in the global offset table, procedure linkage
   1094    table, and dynamic reloc sections.  At this point we haven't
   1095    necessarily read all the input files.  */
   1096 
   1097 static bool
   1098 elf32_hppa_check_relocs (bfd *abfd,
   1099 			 struct bfd_link_info *info,
   1100 			 asection *sec,
   1101 			 const Elf_Internal_Rela *relocs)
   1102 {
   1103   Elf_Internal_Shdr *symtab_hdr;
   1104   struct elf_link_hash_entry **eh_syms;
   1105   const Elf_Internal_Rela *rela;
   1106   const Elf_Internal_Rela *rela_end;
   1107   struct elf32_hppa_link_hash_table *htab;
   1108   asection *sreloc;
   1109 
   1110   if (bfd_link_relocatable (info))
   1111     return true;
   1112 
   1113   htab = hppa_link_hash_table (info);
   1114   if (htab == NULL)
   1115     return false;
   1116   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   1117   eh_syms = elf_sym_hashes (abfd);
   1118   sreloc = NULL;
   1119 
   1120   rela_end = relocs + sec->reloc_count;
   1121   for (rela = relocs; rela < rela_end; rela++)
   1122     {
   1123       enum {
   1124 	NEED_GOT = 1,
   1125 	NEED_PLT = 2,
   1126 	NEED_DYNREL = 4,
   1127 	PLT_PLABEL = 8
   1128       };
   1129 
   1130       unsigned int r_symndx, r_type;
   1131       struct elf32_hppa_link_hash_entry *hh;
   1132       int need_entry = 0;
   1133 
   1134       r_symndx = ELF32_R_SYM (rela->r_info);
   1135 
   1136       if (r_symndx < symtab_hdr->sh_info)
   1137 	hh = NULL;
   1138       else
   1139 	{
   1140 	  hh =  hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
   1141 	  while (hh->eh.root.type == bfd_link_hash_indirect
   1142 		 || hh->eh.root.type == bfd_link_hash_warning)
   1143 	    hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
   1144 	}
   1145 
   1146       r_type = ELF32_R_TYPE (rela->r_info);
   1147       r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
   1148 
   1149       switch (r_type)
   1150 	{
   1151 	case R_PARISC_DLTIND14F:
   1152 	case R_PARISC_DLTIND14R:
   1153 	case R_PARISC_DLTIND21L:
   1154 	  /* This symbol requires a global offset table entry.  */
   1155 	  need_entry = NEED_GOT;
   1156 	  break;
   1157 
   1158 	case R_PARISC_PLABEL14R: /* "Official" procedure labels.  */
   1159 	case R_PARISC_PLABEL21L:
   1160 	case R_PARISC_PLABEL32:
   1161 	  /* If the addend is non-zero, we break badly.  */
   1162 	  if (rela->r_addend != 0)
   1163 	    abort ();
   1164 
   1165 	  /* If we are creating a shared library, then we need to
   1166 	     create a PLT entry for all PLABELs, because PLABELs with
   1167 	     local symbols may be passed via a pointer to another
   1168 	     object.  Additionally, output a dynamic relocation
   1169 	     pointing to the PLT entry.
   1170 
   1171 	     For executables, the original 32-bit ABI allowed two
   1172 	     different styles of PLABELs (function pointers):  For
   1173 	     global functions, the PLABEL word points into the .plt
   1174 	     two bytes past a (function address, gp) pair, and for
   1175 	     local functions the PLABEL points directly at the
   1176 	     function.  The magic +2 for the first type allows us to
   1177 	     differentiate between the two.  As you can imagine, this
   1178 	     is a real pain when it comes to generating code to call
   1179 	     functions indirectly or to compare function pointers.
   1180 	     We avoid the mess by always pointing a PLABEL into the
   1181 	     .plt, even for local functions.  */
   1182 	  need_entry = PLT_PLABEL | NEED_PLT;
   1183 	  if (bfd_link_pic (info))
   1184 	    need_entry |= NEED_DYNREL;
   1185 	  break;
   1186 
   1187 	case R_PARISC_PCREL12F:
   1188 	  htab->has_12bit_branch = 1;
   1189 	  goto branch_common;
   1190 
   1191 	case R_PARISC_PCREL17C:
   1192 	case R_PARISC_PCREL17F:
   1193 	  htab->has_17bit_branch = 1;
   1194 	  goto branch_common;
   1195 
   1196 	case R_PARISC_PCREL22F:
   1197 	  htab->has_22bit_branch = 1;
   1198 	branch_common:
   1199 	  /* Function calls might need to go through the .plt, and
   1200 	     might require long branch stubs.  */
   1201 	  if (hh == NULL)
   1202 	    {
   1203 	      /* We know local syms won't need a .plt entry, and if
   1204 		 they need a long branch stub we can't guarantee that
   1205 		 we can reach the stub.  So just flag an error later
   1206 		 if we're doing a shared link and find we need a long
   1207 		 branch stub.  */
   1208 	      continue;
   1209 	    }
   1210 	  else
   1211 	    {
   1212 	      /* Global symbols will need a .plt entry if they remain
   1213 		 global, and in most cases won't need a long branch
   1214 		 stub.  Unfortunately, we have to cater for the case
   1215 		 where a symbol is forced local by versioning, or due
   1216 		 to symbolic linking, and we lose the .plt entry.  */
   1217 	      need_entry = NEED_PLT;
   1218 	      if (hh->eh.type == STT_PARISC_MILLI)
   1219 		need_entry = 0;
   1220 	    }
   1221 	  break;
   1222 
   1223 	case R_PARISC_SEGBASE:  /* Used to set segment base.  */
   1224 	case R_PARISC_SEGREL32: /* Relative reloc, used for unwind.  */
   1225 	case R_PARISC_PCREL14F: /* PC relative load/store.  */
   1226 	case R_PARISC_PCREL14R:
   1227 	case R_PARISC_PCREL17R: /* External branches.  */
   1228 	case R_PARISC_PCREL21L: /* As above, and for load/store too.  */
   1229 	case R_PARISC_PCREL32:
   1230 	  /* We don't need to propagate the relocation if linking a
   1231 	     shared object since these are section relative.  */
   1232 	  continue;
   1233 
   1234 	case R_PARISC_DPREL14F: /* Used for gp rel data load/store.  */
   1235 	case R_PARISC_DPREL14R:
   1236 	case R_PARISC_DPREL21L:
   1237 	  if (bfd_link_pic (info))
   1238 	    {
   1239 	      _bfd_error_handler
   1240 		/* xgettext:c-format */
   1241 		(_("%pB: relocation %s can not be used when making a shared object; recompile with -fPIC"),
   1242 		 abfd,
   1243 		 elf_hppa_howto_table[r_type].name);
   1244 	      bfd_set_error (bfd_error_bad_value);
   1245 	      return false;
   1246 	    }
   1247 	  /* Fall through.  */
   1248 
   1249 	case R_PARISC_DIR17F: /* Used for external branches.  */
   1250 	case R_PARISC_DIR17R:
   1251 	case R_PARISC_DIR14F: /* Used for load/store from absolute locn.  */
   1252 	case R_PARISC_DIR14R:
   1253 	case R_PARISC_DIR21L: /* As above, and for ext branches too.  */
   1254 	case R_PARISC_DIR32: /* .word relocs.  */
   1255 	  /* We may want to output a dynamic relocation later.  */
   1256 	  need_entry = NEED_DYNREL;
   1257 	  break;
   1258 
   1259 	  /* This relocation describes the C++ object vtable hierarchy.
   1260 	     Reconstruct it for later use during GC.  */
   1261 	case R_PARISC_GNU_VTINHERIT:
   1262 	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
   1263 	    return false;
   1264 	  continue;
   1265 
   1266 	  /* This relocation describes which C++ vtable entries are actually
   1267 	     used.  Record for later use during GC.  */
   1268 	case R_PARISC_GNU_VTENTRY:
   1269 	  if (!bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
   1270 	    return false;
   1271 	  continue;
   1272 
   1273 	case R_PARISC_TLS_GD21L:
   1274 	case R_PARISC_TLS_GD14R:
   1275 	case R_PARISC_TLS_LDM21L:
   1276 	case R_PARISC_TLS_LDM14R:
   1277 	  need_entry = NEED_GOT;
   1278 	  break;
   1279 
   1280 	case R_PARISC_TLS_IE21L:
   1281 	case R_PARISC_TLS_IE14R:
   1282 	  if (bfd_link_dll (info))
   1283 	    info->flags |= DF_STATIC_TLS;
   1284 	  need_entry = NEED_GOT;
   1285 	  break;
   1286 
   1287 	default:
   1288 	  continue;
   1289 	}
   1290 
   1291       /* Now carry out our orders.  */
   1292       if (need_entry & NEED_GOT)
   1293 	{
   1294 	  int tls_type = GOT_NORMAL;
   1295 
   1296 	  switch (r_type)
   1297 	    {
   1298 	    default:
   1299 	      break;
   1300 	    case R_PARISC_TLS_GD21L:
   1301 	    case R_PARISC_TLS_GD14R:
   1302 	      tls_type = GOT_TLS_GD;
   1303 	      break;
   1304 	    case R_PARISC_TLS_LDM21L:
   1305 	    case R_PARISC_TLS_LDM14R:
   1306 	      tls_type = GOT_TLS_LDM;
   1307 	      break;
   1308 	    case R_PARISC_TLS_IE21L:
   1309 	    case R_PARISC_TLS_IE14R:
   1310 	      tls_type = GOT_TLS_IE;
   1311 	      break;
   1312 	    }
   1313 
   1314 	  /* Allocate space for a GOT entry, as well as a dynamic
   1315 	     relocation for this entry.  */
   1316 	  if (htab->etab.sgot == NULL)
   1317 	    {
   1318 	      if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
   1319 		return false;
   1320 	    }
   1321 
   1322 	  if (hh != NULL)
   1323 	    {
   1324 	      if (tls_type == GOT_TLS_LDM)
   1325 		htab->tls_ldm_got.refcount += 1;
   1326 	      else
   1327 		hh->eh.got.refcount += 1;
   1328 	      hh->tls_type |= tls_type;
   1329 	    }
   1330 	  else
   1331 	    {
   1332 	      bfd_signed_vma *local_got_refcounts;
   1333 
   1334 	      /* This is a global offset table entry for a local symbol.  */
   1335 	      local_got_refcounts = hppa32_elf_local_refcounts (abfd);
   1336 	      if (local_got_refcounts == NULL)
   1337 		return false;
   1338 	      if (tls_type == GOT_TLS_LDM)
   1339 		htab->tls_ldm_got.refcount += 1;
   1340 	      else
   1341 		local_got_refcounts[r_symndx] += 1;
   1342 
   1343 	      hppa_elf_local_got_tls_type (abfd) [r_symndx] |= tls_type;
   1344 	    }
   1345 	}
   1346 
   1347       if (need_entry & NEED_PLT)
   1348 	{
   1349 	  /* If we are creating a shared library, and this is a reloc
   1350 	     against a weak symbol or a global symbol in a dynamic
   1351 	     object, then we will be creating an import stub and a
   1352 	     .plt entry for the symbol.  Similarly, on a normal link
   1353 	     to symbols defined in a dynamic object we'll need the
   1354 	     import stub and a .plt entry.  We don't know yet whether
   1355 	     the symbol is defined or not, so make an entry anyway and
   1356 	     clean up later in adjust_dynamic_symbol.  */
   1357 	  if ((sec->flags & SEC_ALLOC) != 0)
   1358 	    {
   1359 	      if (hh != NULL)
   1360 		{
   1361 		  hh->eh.needs_plt = 1;
   1362 		  hh->eh.plt.refcount += 1;
   1363 
   1364 		  /* If this .plt entry is for a plabel, mark it so
   1365 		     that adjust_dynamic_symbol will keep the entry
   1366 		     even if it appears to be local.  */
   1367 		  if (need_entry & PLT_PLABEL)
   1368 		    hh->plabel = 1;
   1369 		}
   1370 	      else if (need_entry & PLT_PLABEL)
   1371 		{
   1372 		  bfd_signed_vma *local_got_refcounts;
   1373 		  bfd_signed_vma *local_plt_refcounts;
   1374 
   1375 		  local_got_refcounts = hppa32_elf_local_refcounts (abfd);
   1376 		  if (local_got_refcounts == NULL)
   1377 		    return false;
   1378 		  local_plt_refcounts = (local_got_refcounts
   1379 					 + symtab_hdr->sh_info);
   1380 		  local_plt_refcounts[r_symndx] += 1;
   1381 		}
   1382 	    }
   1383 	}
   1384 
   1385       if ((need_entry & NEED_DYNREL) != 0
   1386 	  && (sec->flags & SEC_ALLOC) != 0)
   1387 	{
   1388 	  /* Flag this symbol as having a non-got, non-plt reference
   1389 	     so that we generate copy relocs if it turns out to be
   1390 	     dynamic.  */
   1391 	  if (hh != NULL)
   1392 	    hh->eh.non_got_ref = 1;
   1393 
   1394 	  /* If we are creating a shared library then we need to copy
   1395 	     the reloc into the shared library.  However, if we are
   1396 	     linking with -Bsymbolic, we need only copy absolute
   1397 	     relocs or relocs against symbols that are not defined in
   1398 	     an object we are including in the link.  PC- or DP- or
   1399 	     DLT-relative relocs against any local sym or global sym
   1400 	     with DEF_REGULAR set, can be discarded.  At this point we
   1401 	     have not seen all the input files, so it is possible that
   1402 	     DEF_REGULAR is not set now but will be set later (it is
   1403 	     never cleared).  We account for that possibility below by
   1404 	     storing information in the dyn_relocs field of the
   1405 	     hash table entry.
   1406 
   1407 	     A similar situation to the -Bsymbolic case occurs when
   1408 	     creating shared libraries and symbol visibility changes
   1409 	     render the symbol local.
   1410 
   1411 	     As it turns out, all the relocs we will be creating here
   1412 	     are absolute, so we cannot remove them on -Bsymbolic
   1413 	     links or visibility changes anyway.  A STUB_REL reloc
   1414 	     is absolute too, as in that case it is the reloc in the
   1415 	     stub we will be creating, rather than copying the PCREL
   1416 	     reloc in the branch.
   1417 
   1418 	     If on the other hand, we are creating an executable, we
   1419 	     may need to keep relocations for symbols satisfied by a
   1420 	     dynamic library if we manage to avoid copy relocs for the
   1421 	     symbol.  */
   1422 	  if ((bfd_link_pic (info)
   1423 	       && (IS_ABSOLUTE_RELOC (r_type)
   1424 		   || (hh != NULL
   1425 		       && (!SYMBOLIC_BIND (info, &hh->eh)
   1426 			   || hh->eh.root.type == bfd_link_hash_defweak
   1427 			   || !hh->eh.def_regular))))
   1428 	      || (ELIMINATE_COPY_RELOCS
   1429 		  && !bfd_link_pic (info)
   1430 		  && hh != NULL
   1431 		  && (hh->eh.root.type == bfd_link_hash_defweak
   1432 		      || !hh->eh.def_regular)))
   1433 	    {
   1434 	      struct elf_dyn_relocs *hdh_p;
   1435 	      struct elf_dyn_relocs **hdh_head;
   1436 
   1437 	      /* Create a reloc section in dynobj and make room for
   1438 		 this reloc.  */
   1439 	      if (sreloc == NULL)
   1440 		{
   1441 		  sreloc = _bfd_elf_make_dynamic_reloc_section
   1442 		    (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ true);
   1443 
   1444 		  if (sreloc == NULL)
   1445 		    {
   1446 		      bfd_set_error (bfd_error_bad_value);
   1447 		      return false;
   1448 		    }
   1449 		}
   1450 
   1451 	      /* If this is a global symbol, we count the number of
   1452 		 relocations we need for this symbol.  */
   1453 	      if (hh != NULL)
   1454 		{
   1455 		  hdh_head = &hh->eh.dyn_relocs;
   1456 		}
   1457 	      else
   1458 		{
   1459 		  /* Track dynamic relocs needed for local syms too.
   1460 		     We really need local syms available to do this
   1461 		     easily.  Oh well.  */
   1462 		  asection *sr;
   1463 		  void *vpp;
   1464 		  Elf_Internal_Sym *isym;
   1465 
   1466 		  isym = bfd_sym_from_r_symndx (&htab->etab.sym_cache,
   1467 						abfd, r_symndx);
   1468 		  if (isym == NULL)
   1469 		    return false;
   1470 
   1471 		  sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
   1472 		  if (sr == NULL)
   1473 		    sr = sec;
   1474 
   1475 		  vpp = &elf_section_data (sr)->local_dynrel;
   1476 		  hdh_head = (struct elf_dyn_relocs **) vpp;
   1477 		}
   1478 
   1479 	      hdh_p = *hdh_head;
   1480 	      if (hdh_p == NULL || hdh_p->sec != sec)
   1481 		{
   1482 		  hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
   1483 		  if (hdh_p == NULL)
   1484 		    return false;
   1485 		  hdh_p->next = *hdh_head;
   1486 		  *hdh_head = hdh_p;
   1487 		  hdh_p->sec = sec;
   1488 		  hdh_p->count = 0;
   1489 #if RELATIVE_DYNRELOCS
   1490 		  hdh_p->pc_count = 0;
   1491 #endif
   1492 		}
   1493 
   1494 	      hdh_p->count += 1;
   1495 #if RELATIVE_DYNRELOCS
   1496 	      if (!IS_ABSOLUTE_RELOC (rtype))
   1497 		hdh_p->pc_count += 1;
   1498 #endif
   1499 	    }
   1500 	}
   1501     }
   1502 
   1503   return true;
   1504 }
   1505 
   1506 /* Return the section that should be marked against garbage collection
   1507    for a given relocation.  */
   1508 
   1509 static asection *
   1510 elf32_hppa_gc_mark_hook (asection *sec,
   1511 			 struct bfd_link_info *info,
   1512 			 Elf_Internal_Rela *rela,
   1513 			 struct elf_link_hash_entry *hh,
   1514 			 Elf_Internal_Sym *sym)
   1515 {
   1516   if (hh != NULL)
   1517     switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
   1518       {
   1519       case R_PARISC_GNU_VTINHERIT:
   1520       case R_PARISC_GNU_VTENTRY:
   1521 	return NULL;
   1522       }
   1523 
   1524   return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
   1525 }
   1526 
   1527 /* Support for core dump NOTE sections.  */
   1528 
   1529 static bool
   1530 elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
   1531 {
   1532   int offset;
   1533   size_t size;
   1534 
   1535   switch (note->descsz)
   1536     {
   1537       default:
   1538 	return false;
   1539 
   1540       case 396:		/* Linux/hppa */
   1541 	/* pr_cursig */
   1542 	elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
   1543 
   1544 	/* pr_pid */
   1545 	elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
   1546 
   1547 	/* pr_reg */
   1548 	offset = 72;
   1549 	size = 320;
   1550 
   1551 	break;
   1552     }
   1553 
   1554   /* Make a ".reg/999" section.  */
   1555   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
   1556 					  size, note->descpos + offset);
   1557 }
   1558 
   1559 static bool
   1560 elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
   1561 {
   1562   switch (note->descsz)
   1563     {
   1564       default:
   1565 	return false;
   1566 
   1567       case 124:		/* Linux/hppa elf_prpsinfo.  */
   1568 	elf_tdata (abfd)->core->program
   1569 	  = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
   1570 	elf_tdata (abfd)->core->command
   1571 	  = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
   1572     }
   1573 
   1574   /* Note that for some reason, a spurious space is tacked
   1575      onto the end of the args in some (at least one anyway)
   1576      implementations, so strip it off if it exists.  */
   1577   {
   1578     char *command = elf_tdata (abfd)->core->command;
   1579     int n = strlen (command);
   1580 
   1581     if (0 < n && command[n - 1] == ' ')
   1582       command[n - 1] = '\0';
   1583   }
   1584 
   1585   return true;
   1586 }
   1587 
   1588 /* Our own version of hide_symbol, so that we can keep plt entries for
   1589    plabels.  */
   1590 
   1591 static void
   1592 elf32_hppa_hide_symbol (struct bfd_link_info *info,
   1593 			struct elf_link_hash_entry *eh,
   1594 			bool force_local)
   1595 {
   1596   if (force_local)
   1597     {
   1598       eh->forced_local = 1;
   1599       if (eh->dynindx != -1)
   1600 	{
   1601 	  eh->dynindx = -1;
   1602 	  _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
   1603 				  eh->dynstr_index);
   1604 	}
   1605 
   1606       /* PR 16082: Remove version information from hidden symbol.  */
   1607       eh->verinfo.verdef = NULL;
   1608       eh->verinfo.vertree = NULL;
   1609     }
   1610 
   1611   /* STT_GNU_IFUNC symbol must go through PLT.  */
   1612   if (! hppa_elf_hash_entry (eh)->plabel
   1613       && eh->type != STT_GNU_IFUNC)
   1614     {
   1615       eh->needs_plt = 0;
   1616       eh->plt = elf_hash_table (info)->init_plt_offset;
   1617     }
   1618 }
   1619 
   1620 /* Return true if we have dynamic relocs against H or any of its weak
   1621    aliases, that apply to read-only sections.  Cannot be used after
   1622    size_dynamic_sections.  */
   1623 
   1624 static bool
   1625 alias_readonly_dynrelocs (struct elf_link_hash_entry *eh)
   1626 {
   1627   struct elf32_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh);
   1628   do
   1629     {
   1630       if (_bfd_elf_readonly_dynrelocs (&hh->eh))
   1631 	return true;
   1632       hh = hppa_elf_hash_entry (hh->eh.u.alias);
   1633     } while (hh != NULL && &hh->eh != eh);
   1634 
   1635   return false;
   1636 }
   1637 
   1638 /* Adjust a symbol defined by a dynamic object and referenced by a
   1639    regular object.  The current definition is in some section of the
   1640    dynamic object, but we're not including those sections.  We have to
   1641    change the definition to something the rest of the link can
   1642    understand.  */
   1643 
   1644 static bool
   1645 elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
   1646 				  struct elf_link_hash_entry *eh)
   1647 {
   1648   struct elf32_hppa_link_hash_table *htab;
   1649   asection *sec, *srel;
   1650 
   1651   /* If this is a function, put it in the procedure linkage table.  We
   1652      will fill in the contents of the procedure linkage table later.  */
   1653   if (eh->type == STT_FUNC
   1654       || eh->needs_plt)
   1655     {
   1656       bool local = (SYMBOL_CALLS_LOCAL (info, eh)
   1657 		    || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh));
   1658       /* Discard dyn_relocs when non-pic if we've decided that a
   1659 	 function symbol is local.  */
   1660       if (!bfd_link_pic (info) && local)
   1661 	eh->dyn_relocs = NULL;
   1662 
   1663       /* If the symbol is used by a plabel, we must allocate a PLT slot.
   1664 	 The refcounts are not reliable when it has been hidden since
   1665 	 hide_symbol can be called before the plabel flag is set.  */
   1666       if (hppa_elf_hash_entry (eh)->plabel)
   1667 	eh->plt.refcount = 1;
   1668 
   1669       /* Note that unlike some other backends, the refcount is not
   1670 	 incremented for a non-call (and non-plabel) function reference.  */
   1671       else if (eh->plt.refcount <= 0
   1672 	       || local)
   1673 	{
   1674 	  /* The .plt entry is not needed when:
   1675 	     a) Garbage collection has removed all references to the
   1676 	     symbol, or
   1677 	     b) We know for certain the symbol is defined in this
   1678 	     object, and it's not a weak definition, nor is the symbol
   1679 	     used by a plabel relocation.  Either this object is the
   1680 	     application or we are doing a shared symbolic link.  */
   1681 	  eh->plt.offset = (bfd_vma) -1;
   1682 	  eh->needs_plt = 0;
   1683 	}
   1684 
   1685       /* Unlike other targets, elf32-hppa.c does not define a function
   1686 	 symbol in a non-pic executable on PLT stub code, so we don't
   1687 	 have a local definition in that case.  ie. dyn_relocs can't
   1688 	 be discarded.  */
   1689 
   1690       /* Function symbols can't have copy relocs.  */
   1691       return true;
   1692     }
   1693   else
   1694     eh->plt.offset = (bfd_vma) -1;
   1695 
   1696   htab = hppa_link_hash_table (info);
   1697   if (htab == NULL)
   1698     return false;
   1699 
   1700   /* If this is a weak symbol, and there is a real definition, the
   1701      processor independent code will have arranged for us to see the
   1702      real definition first, and we can just use the same value.  */
   1703   if (eh->is_weakalias)
   1704     {
   1705       struct elf_link_hash_entry *def = weakdef (eh);
   1706       BFD_ASSERT (def->root.type == bfd_link_hash_defined);
   1707       eh->root.u.def.section = def->root.u.def.section;
   1708       eh->root.u.def.value = def->root.u.def.value;
   1709       if (def->root.u.def.section == htab->etab.sdynbss
   1710 	  || def->root.u.def.section == htab->etab.sdynrelro)
   1711 	eh->dyn_relocs = NULL;
   1712       return true;
   1713     }
   1714 
   1715   /* This is a reference to a symbol defined by a dynamic object which
   1716      is not a function.  */
   1717 
   1718   /* If we are creating a shared library, we must presume that the
   1719      only references to the symbol are via the global offset table.
   1720      For such cases we need not do anything here; the relocations will
   1721      be handled correctly by relocate_section.  */
   1722   if (bfd_link_pic (info))
   1723     return true;
   1724 
   1725   /* If there are no references to this symbol that do not use the
   1726      GOT, we don't need to generate a copy reloc.  */
   1727   if (!eh->non_got_ref)
   1728     return true;
   1729 
   1730   /* If -z nocopyreloc was given, we won't generate them either.  */
   1731   if (info->nocopyreloc)
   1732     return true;
   1733 
   1734   /* If we don't find any dynamic relocs in read-only sections, then
   1735      we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
   1736   if (ELIMINATE_COPY_RELOCS
   1737       && !alias_readonly_dynrelocs (eh))
   1738     return true;
   1739 
   1740   /* We must allocate the symbol in our .dynbss section, which will
   1741      become part of the .bss section of the executable.  There will be
   1742      an entry for this symbol in the .dynsym section.  The dynamic
   1743      object will contain position independent code, so all references
   1744      from the dynamic object to this symbol will go through the global
   1745      offset table.  The dynamic linker will use the .dynsym entry to
   1746      determine the address it must put in the global offset table, so
   1747      both the dynamic object and the regular object will refer to the
   1748      same memory location for the variable.  */
   1749   if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
   1750     {
   1751       sec = htab->etab.sdynrelro;
   1752       srel = htab->etab.sreldynrelro;
   1753     }
   1754   else
   1755     {
   1756       sec = htab->etab.sdynbss;
   1757       srel = htab->etab.srelbss;
   1758     }
   1759   if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
   1760     {
   1761       /* We must generate a COPY reloc to tell the dynamic linker to
   1762 	 copy the initial value out of the dynamic object and into the
   1763 	 runtime process image.  */
   1764       srel->size += sizeof (Elf32_External_Rela);
   1765       eh->needs_copy = 1;
   1766     }
   1767 
   1768   /* We no longer want dyn_relocs.  */
   1769   eh->dyn_relocs = NULL;
   1770   return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
   1771 }
   1772 
   1773 /* If EH is undefined, make it dynamic if that makes sense.  */
   1774 
   1775 static bool
   1776 ensure_undef_dynamic (struct bfd_link_info *info,
   1777 		      struct elf_link_hash_entry *eh)
   1778 {
   1779   struct elf_link_hash_table *htab = elf_hash_table (info);
   1780 
   1781   if (htab->dynamic_sections_created
   1782       && (eh->root.type == bfd_link_hash_undefweak
   1783 	  || eh->root.type == bfd_link_hash_undefined)
   1784       && eh->dynindx == -1
   1785       && !eh->forced_local
   1786       && eh->type != STT_PARISC_MILLI
   1787       && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)
   1788       && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
   1789     return bfd_elf_link_record_dynamic_symbol (info, eh);
   1790   return true;
   1791 }
   1792 
   1793 /* Allocate space in the .plt for entries that won't have relocations.
   1794    ie. plabel entries.  */
   1795 
   1796 static bool
   1797 allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
   1798 {
   1799   struct bfd_link_info *info;
   1800   struct elf32_hppa_link_hash_table *htab;
   1801   struct elf32_hppa_link_hash_entry *hh;
   1802   asection *sec;
   1803 
   1804   if (eh->root.type == bfd_link_hash_indirect)
   1805     return true;
   1806 
   1807   info = (struct bfd_link_info *) inf;
   1808   hh = hppa_elf_hash_entry (eh);
   1809   htab = hppa_link_hash_table (info);
   1810   if (htab == NULL)
   1811     return false;
   1812 
   1813   if (htab->etab.dynamic_sections_created
   1814       && eh->plt.refcount > 0)
   1815     {
   1816       if (!ensure_undef_dynamic (info, eh))
   1817 	return false;
   1818 
   1819       if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
   1820 	{
   1821 	  /* Allocate these later.  From this point on, h->plabel
   1822 	     means that the plt entry is only used by a plabel.
   1823 	     We'll be using a normal plt entry for this symbol, so
   1824 	     clear the plabel indicator.  */
   1825 
   1826 	  hh->plabel = 0;
   1827 	}
   1828       else if (hh->plabel)
   1829 	{
   1830 	  /* Make an entry in the .plt section for plabel references
   1831 	     that won't have a .plt entry for other reasons.  */
   1832 	  sec = htab->etab.splt;
   1833 	  eh->plt.offset = sec->size;
   1834 	  sec->size += PLT_ENTRY_SIZE;
   1835 	  if (bfd_link_pic (info))
   1836 	    htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
   1837 	}
   1838       else
   1839 	{
   1840 	  /* No .plt entry needed.  */
   1841 	  eh->plt.offset = (bfd_vma) -1;
   1842 	  eh->needs_plt = 0;
   1843 	}
   1844     }
   1845   else
   1846     {
   1847       eh->plt.offset = (bfd_vma) -1;
   1848       eh->needs_plt = 0;
   1849     }
   1850 
   1851   return true;
   1852 }
   1853 
   1854 /* Calculate size of GOT entries for symbol given its TLS_TYPE.  */
   1855 
   1856 static inline unsigned int
   1857 got_entries_needed (int tls_type)
   1858 {
   1859   unsigned int need = 0;
   1860 
   1861   if ((tls_type & GOT_NORMAL) != 0)
   1862     need += GOT_ENTRY_SIZE;
   1863   if ((tls_type & GOT_TLS_GD) != 0)
   1864     need += GOT_ENTRY_SIZE * 2;
   1865   if ((tls_type & GOT_TLS_IE) != 0)
   1866     need += GOT_ENTRY_SIZE;
   1867   return need;
   1868 }
   1869 
   1870 /* Calculate size of relocs needed for symbol given its TLS_TYPE and
   1871    NEEDed GOT entries.  TPREL_KNOWN says a TPREL offset can be
   1872    calculated at link time.  DTPREL_KNOWN says the same for a DTPREL
   1873    offset.  */
   1874 
   1875 static inline unsigned int
   1876 got_relocs_needed (int tls_type, unsigned int need,
   1877 		   bool dtprel_known, bool tprel_known)
   1878 {
   1879   /* All the entries we allocated need relocs.
   1880      Except for GD and IE with local symbols.  */
   1881   if ((tls_type & GOT_TLS_GD) != 0 && dtprel_known)
   1882     need -= GOT_ENTRY_SIZE;
   1883   if ((tls_type & GOT_TLS_IE) != 0 && tprel_known)
   1884     need -= GOT_ENTRY_SIZE;
   1885   return need * sizeof (Elf32_External_Rela) / GOT_ENTRY_SIZE;
   1886 }
   1887 
   1888 /* Allocate space in .plt, .got and associated reloc sections for
   1889    global syms.  */
   1890 
   1891 static bool
   1892 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
   1893 {
   1894   struct bfd_link_info *info;
   1895   struct elf32_hppa_link_hash_table *htab;
   1896   asection *sec;
   1897   struct elf32_hppa_link_hash_entry *hh;
   1898   struct elf_dyn_relocs *hdh_p;
   1899 
   1900   if (eh->root.type == bfd_link_hash_indirect)
   1901     return true;
   1902 
   1903   info = inf;
   1904   htab = hppa_link_hash_table (info);
   1905   if (htab == NULL)
   1906     return false;
   1907 
   1908   hh = hppa_elf_hash_entry (eh);
   1909 
   1910   if (htab->etab.dynamic_sections_created
   1911       && eh->plt.offset != (bfd_vma) -1
   1912       && !hh->plabel
   1913       && eh->plt.refcount > 0)
   1914     {
   1915       /* Make an entry in the .plt section.  */
   1916       sec = htab->etab.splt;
   1917       eh->plt.offset = sec->size;
   1918       sec->size += PLT_ENTRY_SIZE;
   1919 
   1920       /* We also need to make an entry in the .rela.plt section.  */
   1921       htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
   1922       htab->need_plt_stub = 1;
   1923     }
   1924 
   1925   if (eh->got.refcount > 0)
   1926     {
   1927       unsigned int need;
   1928 
   1929       if (!ensure_undef_dynamic (info, eh))
   1930 	return false;
   1931 
   1932       sec = htab->etab.sgot;
   1933       eh->got.offset = sec->size;
   1934       need = got_entries_needed (hh->tls_type);
   1935       sec->size += need;
   1936       if (htab->etab.dynamic_sections_created
   1937 	  && (bfd_link_dll (info)
   1938 	      || (bfd_link_pic (info) && (hh->tls_type & GOT_NORMAL) != 0)
   1939 	      || (eh->dynindx != -1
   1940 		  && !SYMBOL_REFERENCES_LOCAL (info, eh)))
   1941 	  && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
   1942 	{
   1943 	  bool local = SYMBOL_REFERENCES_LOCAL (info, eh);
   1944 	  htab->etab.srelgot->size
   1945 	    += got_relocs_needed (hh->tls_type, need, local,
   1946 				  local && bfd_link_executable (info));
   1947 	}
   1948     }
   1949   else
   1950     eh->got.offset = (bfd_vma) -1;
   1951 
   1952   /* If no dynamic sections we can't have dynamic relocs.  */
   1953   if (!htab->etab.dynamic_sections_created)
   1954     eh->dyn_relocs = NULL;
   1955 
   1956   /* Discard relocs on undefined syms with non-default visibility.  */
   1957   else if ((eh->root.type == bfd_link_hash_undefined
   1958 	    && ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
   1959 	   || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
   1960     eh->dyn_relocs = NULL;
   1961 
   1962   if (eh->dyn_relocs == NULL)
   1963     return true;
   1964 
   1965   /* If this is a -Bsymbolic shared link, then we need to discard all
   1966      space allocated for dynamic pc-relative relocs against symbols
   1967      defined in a regular object.  For the normal shared case, discard
   1968      space for relocs that have become local due to symbol visibility
   1969      changes.  */
   1970   if (bfd_link_pic (info))
   1971     {
   1972 #if RELATIVE_DYNRELOCS
   1973       if (SYMBOL_CALLS_LOCAL (info, eh))
   1974 	{
   1975 	  struct elf_dyn_relocs **hdh_pp;
   1976 
   1977 	  for (hdh_pp = &eh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
   1978 	    {
   1979 	      hdh_p->count -= hdh_p->pc_count;
   1980 	      hdh_p->pc_count = 0;
   1981 	      if (hdh_p->count == 0)
   1982 		*hdh_pp = hdh_p->next;
   1983 	      else
   1984 		hdh_pp = &hdh_p->next;
   1985 	    }
   1986 	}
   1987 #endif
   1988 
   1989       if (eh->dyn_relocs != NULL)
   1990 	{
   1991 	  if (!ensure_undef_dynamic (info, eh))
   1992 	    return false;
   1993 	}
   1994     }
   1995   else if (ELIMINATE_COPY_RELOCS)
   1996     {
   1997       /* For the non-shared case, discard space for relocs against
   1998 	 symbols which turn out to need copy relocs or are not
   1999 	 dynamic.  */
   2000 
   2001       if (eh->dynamic_adjusted
   2002 	  && !eh->def_regular
   2003 	  && !ELF_COMMON_DEF_P (eh))
   2004 	{
   2005 	  if (!ensure_undef_dynamic (info, eh))
   2006 	    return false;
   2007 
   2008 	  if (eh->dynindx == -1)
   2009 	    eh->dyn_relocs = NULL;
   2010 	}
   2011       else
   2012 	eh->dyn_relocs = NULL;
   2013     }
   2014 
   2015   /* Finally, allocate space.  */
   2016   for (hdh_p = eh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->next)
   2017     {
   2018       asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
   2019       sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
   2020     }
   2021 
   2022   return true;
   2023 }
   2024 
   2025 /* This function is called via elf_link_hash_traverse to force
   2026    millicode symbols local so they do not end up as globals in the
   2027    dynamic symbol table.  We ought to be able to do this in
   2028    adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
   2029    for all dynamic symbols.  Arguably, this is a bug in
   2030    elf_adjust_dynamic_symbol.  */
   2031 
   2032 static bool
   2033 clobber_millicode_symbols (struct elf_link_hash_entry *eh,
   2034 			   void *info)
   2035 {
   2036   if (eh->type == STT_PARISC_MILLI
   2037       && !eh->forced_local)
   2038     elf32_hppa_hide_symbol ((struct bfd_link_info *) info, eh, true);
   2039   return true;
   2040 }
   2041 
   2042 /* Set the sizes of the dynamic sections.  */
   2043 
   2044 static bool
   2045 elf32_hppa_late_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
   2046 			       struct bfd_link_info *info)
   2047 {
   2048   struct elf32_hppa_link_hash_table *htab;
   2049   bfd *dynobj;
   2050   bfd *ibfd;
   2051   asection *sec;
   2052   bool relocs;
   2053 
   2054   htab = hppa_link_hash_table (info);
   2055   if (htab == NULL)
   2056     return false;
   2057 
   2058   dynobj = htab->etab.dynobj;
   2059   if (dynobj == NULL)
   2060     return true;
   2061 
   2062   if (htab->etab.dynamic_sections_created)
   2063     {
   2064       /* Set the contents of the .interp section to the interpreter.  */
   2065       if (bfd_link_executable (info) && !info->nointerp)
   2066 	{
   2067 	  sec = bfd_get_linker_section (dynobj, ".interp");
   2068 	  if (sec == NULL)
   2069 	    abort ();
   2070 	  sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
   2071 	  sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
   2072 	}
   2073 
   2074       /* Force millicode symbols local.  */
   2075       elf_link_hash_traverse (&htab->etab,
   2076 			      clobber_millicode_symbols,
   2077 			      info);
   2078     }
   2079 
   2080   /* Set up .got and .plt offsets for local syms, and space for local
   2081      dynamic relocs.  */
   2082   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
   2083     {
   2084       bfd_signed_vma *local_got;
   2085       bfd_signed_vma *end_local_got;
   2086       bfd_signed_vma *local_plt;
   2087       bfd_signed_vma *end_local_plt;
   2088       bfd_size_type locsymcount;
   2089       Elf_Internal_Shdr *symtab_hdr;
   2090       asection *srel;
   2091       char *local_tls_type;
   2092 
   2093       if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
   2094 	continue;
   2095 
   2096       for (sec = ibfd->sections; sec != NULL; sec = sec->next)
   2097 	{
   2098 	  struct elf_dyn_relocs *hdh_p;
   2099 
   2100 	  for (hdh_p = ((struct elf_dyn_relocs *)
   2101 		    elf_section_data (sec)->local_dynrel);
   2102 	       hdh_p != NULL;
   2103 	       hdh_p = hdh_p->next)
   2104 	    {
   2105 	      if (!bfd_is_abs_section (hdh_p->sec)
   2106 		  && bfd_is_abs_section (hdh_p->sec->output_section))
   2107 		{
   2108 		  /* Input section has been discarded, either because
   2109 		     it is a copy of a linkonce section or due to
   2110 		     linker script /DISCARD/, so we'll be discarding
   2111 		     the relocs too.  */
   2112 		}
   2113 	      else if (hdh_p->count != 0)
   2114 		{
   2115 		  srel = elf_section_data (hdh_p->sec)->sreloc;
   2116 		  srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
   2117 		  if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
   2118 		    info->flags |= DF_TEXTREL;
   2119 		}
   2120 	    }
   2121 	}
   2122 
   2123       local_got = elf_local_got_refcounts (ibfd);
   2124       if (!local_got)
   2125 	continue;
   2126 
   2127       symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
   2128       locsymcount = symtab_hdr->sh_info;
   2129       end_local_got = local_got + locsymcount;
   2130       local_tls_type = hppa_elf_local_got_tls_type (ibfd);
   2131       sec = htab->etab.sgot;
   2132       srel = htab->etab.srelgot;
   2133       for (; local_got < end_local_got; ++local_got)
   2134 	{
   2135 	  if (*local_got > 0)
   2136 	    {
   2137 	      unsigned int need;
   2138 
   2139 	      *local_got = sec->size;
   2140 	      need = got_entries_needed (*local_tls_type);
   2141 	      sec->size += need;
   2142 	      if (bfd_link_dll (info)
   2143 		  || (bfd_link_pic (info)
   2144 		      && (*local_tls_type & GOT_NORMAL) != 0))
   2145 		htab->etab.srelgot->size
   2146 		  += got_relocs_needed (*local_tls_type, need, true,
   2147 					bfd_link_executable (info));
   2148 	    }
   2149 	  else
   2150 	    *local_got = (bfd_vma) -1;
   2151 
   2152 	  ++local_tls_type;
   2153 	}
   2154 
   2155       local_plt = end_local_got;
   2156       end_local_plt = local_plt + locsymcount;
   2157       if (! htab->etab.dynamic_sections_created)
   2158 	{
   2159 	  /* Won't be used, but be safe.  */
   2160 	  for (; local_plt < end_local_plt; ++local_plt)
   2161 	    *local_plt = (bfd_vma) -1;
   2162 	}
   2163       else
   2164 	{
   2165 	  sec = htab->etab.splt;
   2166 	  srel = htab->etab.srelplt;
   2167 	  for (; local_plt < end_local_plt; ++local_plt)
   2168 	    {
   2169 	      if (*local_plt > 0)
   2170 		{
   2171 		  *local_plt = sec->size;
   2172 		  sec->size += PLT_ENTRY_SIZE;
   2173 		  if (bfd_link_pic (info))
   2174 		    srel->size += sizeof (Elf32_External_Rela);
   2175 		}
   2176 	      else
   2177 		*local_plt = (bfd_vma) -1;
   2178 	    }
   2179 	}
   2180     }
   2181 
   2182   if (htab->tls_ldm_got.refcount > 0)
   2183     {
   2184       /* Allocate 2 got entries and 1 dynamic reloc for
   2185 	 R_PARISC_TLS_DTPMOD32 relocs.  */
   2186       htab->tls_ldm_got.offset = htab->etab.sgot->size;
   2187       htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
   2188       htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
   2189     }
   2190   else
   2191     htab->tls_ldm_got.offset = -1;
   2192 
   2193   /* Do all the .plt entries without relocs first.  The dynamic linker
   2194      uses the last .plt reloc to find the end of the .plt (and hence
   2195      the start of the .got) for lazy linking.  */
   2196   elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
   2197 
   2198   /* Allocate global sym .plt and .got entries, and space for global
   2199      sym dynamic relocs.  */
   2200   elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
   2201 
   2202   /* The check_relocs and adjust_dynamic_symbol entry points have
   2203      determined the sizes of the various dynamic sections.  Allocate
   2204      memory for them.  */
   2205   relocs = false;
   2206   for (sec = dynobj->sections; sec != NULL; sec = sec->next)
   2207     {
   2208       if ((sec->flags & SEC_LINKER_CREATED) == 0)
   2209 	continue;
   2210 
   2211       if (sec == htab->etab.splt)
   2212 	{
   2213 	  if (htab->need_plt_stub)
   2214 	    {
   2215 	      /* Make space for the plt stub at the end of the .plt
   2216 		 section.  We want this stub right at the end, up
   2217 		 against the .got section.  */
   2218 	      int gotalign = bfd_section_alignment (htab->etab.sgot);
   2219 	      int pltalign = bfd_section_alignment (sec);
   2220 	      int align = gotalign > 3 ? gotalign : 3;
   2221 	      bfd_size_type mask;
   2222 
   2223 	      if (align > pltalign)
   2224 		bfd_set_section_alignment (sec, align);
   2225 	      mask = ((bfd_size_type) 1 << gotalign) - 1;
   2226 	      sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
   2227 	    }
   2228 	}
   2229       else if (sec == htab->etab.sgot
   2230 	       || sec == htab->etab.sdynbss
   2231 	       || sec == htab->etab.sdynrelro)
   2232 	;
   2233       else if (startswith (bfd_section_name (sec), ".rela"))
   2234 	{
   2235 	  if (sec->size != 0)
   2236 	    {
   2237 	      /* Remember whether there are any reloc sections other
   2238 		 than .rela.plt.  */
   2239 	      if (sec != htab->etab.srelplt)
   2240 		relocs = true;
   2241 
   2242 	      /* We use the reloc_count field as a counter if we need
   2243 		 to copy relocs into the output file.  */
   2244 	      sec->reloc_count = 0;
   2245 	    }
   2246 	}
   2247       else
   2248 	{
   2249 	  /* It's not one of our sections, so don't allocate space.  */
   2250 	  continue;
   2251 	}
   2252 
   2253       if (sec->size == 0)
   2254 	{
   2255 	  /* If we don't need this section, strip it from the
   2256 	     output file.  This is mostly to handle .rela.bss and
   2257 	     .rela.plt.  We must create both sections in
   2258 	     create_dynamic_sections, because they must be created
   2259 	     before the linker maps input sections to output
   2260 	     sections.  The linker does that before
   2261 	     adjust_dynamic_symbol is called, and it is that
   2262 	     function which decides whether anything needs to go
   2263 	     into these sections.  */
   2264 	  sec->flags |= SEC_EXCLUDE;
   2265 	  continue;
   2266 	}
   2267 
   2268       if ((sec->flags & SEC_HAS_CONTENTS) == 0)
   2269 	continue;
   2270 
   2271       /* Allocate memory for the section contents.  Zero it, because
   2272 	 we may not fill in all the reloc sections.  */
   2273       sec->contents = bfd_zalloc (dynobj, sec->size);
   2274       if (sec->contents == NULL)
   2275 	return false;
   2276     }
   2277 
   2278   return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
   2279 }
   2280 
   2281 /* External entry points for sizing and building linker stubs.  */
   2282 
   2283 /* Set up various things so that we can make a list of input sections
   2284    for each output section included in the link.  Returns -1 on error,
   2285    0 when no stubs will be needed, and 1 on success.  */
   2286 
   2287 int
   2288 elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
   2289 {
   2290   bfd *input_bfd;
   2291   unsigned int bfd_count;
   2292   unsigned int top_id, top_index;
   2293   asection *section;
   2294   asection **input_list, **list;
   2295   size_t amt;
   2296   struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
   2297 
   2298   if (htab == NULL)
   2299     return -1;
   2300 
   2301   /* Count the number of input BFDs and find the top input section id.  */
   2302   for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
   2303        input_bfd != NULL;
   2304        input_bfd = input_bfd->link.next)
   2305     {
   2306       bfd_count += 1;
   2307       for (section = input_bfd->sections;
   2308 	   section != NULL;
   2309 	   section = section->next)
   2310 	{
   2311 	  if (top_id < section->id)
   2312 	    top_id = section->id;
   2313 	}
   2314     }
   2315   htab->bfd_count = bfd_count;
   2316 
   2317   amt = sizeof (struct map_stub) * (top_id + 1);
   2318   htab->stub_group = bfd_zmalloc (amt);
   2319   if (htab->stub_group == NULL)
   2320     return -1;
   2321 
   2322   /* We can't use output_bfd->section_count here to find the top output
   2323      section index as some sections may have been removed, and
   2324      strip_excluded_output_sections doesn't renumber the indices.  */
   2325   for (section = output_bfd->sections, top_index = 0;
   2326        section != NULL;
   2327        section = section->next)
   2328     {
   2329       if (top_index < section->index)
   2330 	top_index = section->index;
   2331     }
   2332 
   2333   htab->top_index = top_index;
   2334   amt = sizeof (asection *) * (top_index + 1);
   2335   input_list = bfd_malloc (amt);
   2336   htab->input_list = input_list;
   2337   if (input_list == NULL)
   2338     return -1;
   2339 
   2340   /* For sections we aren't interested in, mark their entries with a
   2341      value we can check later.  */
   2342   list = input_list + top_index;
   2343   do
   2344     *list = bfd_abs_section_ptr;
   2345   while (list-- != input_list);
   2346 
   2347   for (section = output_bfd->sections;
   2348        section != NULL;
   2349        section = section->next)
   2350     {
   2351       if ((section->flags & SEC_CODE) != 0)
   2352 	input_list[section->index] = NULL;
   2353     }
   2354 
   2355   return 1;
   2356 }
   2357 
   2358 /* The linker repeatedly calls this function for each input section,
   2359    in the order that input sections are linked into output sections.
   2360    Build lists of input sections to determine groupings between which
   2361    we may insert linker stubs.  */
   2362 
   2363 void
   2364 elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
   2365 {
   2366   struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
   2367 
   2368   if (htab == NULL)
   2369     return;
   2370 
   2371   if (isec->output_section->index <= htab->top_index)
   2372     {
   2373       asection **list = htab->input_list + isec->output_section->index;
   2374       if (*list != bfd_abs_section_ptr)
   2375 	{
   2376 	  /* Steal the link_sec pointer for our list.  */
   2377 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
   2378 	  /* This happens to make the list in reverse order,
   2379 	     which is what we want.  */
   2380 	  PREV_SEC (isec) = *list;
   2381 	  *list = isec;
   2382 	}
   2383     }
   2384 }
   2385 
   2386 /* See whether we can group stub sections together.  Grouping stub
   2387    sections may result in fewer stubs.  More importantly, we need to
   2388    put all .init* and .fini* stubs at the beginning of the .init or
   2389    .fini output sections respectively, because glibc splits the
   2390    _init and _fini functions into multiple parts.  Putting a stub in
   2391    the middle of a function is not a good idea.  */
   2392 
   2393 static void
   2394 group_sections (struct elf32_hppa_link_hash_table *htab,
   2395 		bfd_size_type stub_group_size,
   2396 		bool stubs_always_before_branch)
   2397 {
   2398   asection **list = htab->input_list + htab->top_index;
   2399   do
   2400     {
   2401       asection *tail = *list;
   2402       if (tail == bfd_abs_section_ptr)
   2403 	continue;
   2404       while (tail != NULL)
   2405 	{
   2406 	  asection *curr;
   2407 	  asection *prev;
   2408 	  bfd_size_type total;
   2409 	  bool big_sec;
   2410 
   2411 	  curr = tail;
   2412 	  total = tail->size;
   2413 	  big_sec = total >= stub_group_size;
   2414 
   2415 	  while ((prev = PREV_SEC (curr)) != NULL
   2416 		 && ((total += curr->output_offset - prev->output_offset)
   2417 		     < stub_group_size))
   2418 	    curr = prev;
   2419 
   2420 	  /* OK, the size from the start of CURR to the end is less
   2421 	     than 240000 bytes and thus can be handled by one stub
   2422 	     section.  (or the tail section is itself larger than
   2423 	     240000 bytes, in which case we may be toast.)
   2424 	     We should really be keeping track of the total size of
   2425 	     stubs added here, as stubs contribute to the final output
   2426 	     section size.  That's a little tricky, and this way will
   2427 	     only break if stubs added total more than 22144 bytes, or
   2428 	     2768 long branch stubs.  It seems unlikely for more than
   2429 	     2768 different functions to be called, especially from
   2430 	     code only 240000 bytes long.  This limit used to be
   2431 	     250000, but c++ code tends to generate lots of little
   2432 	     functions, and sometimes violated the assumption.  */
   2433 	  do
   2434 	    {
   2435 	      prev = PREV_SEC (tail);
   2436 	      /* Set up this stub group.  */
   2437 	      htab->stub_group[tail->id].link_sec = curr;
   2438 	    }
   2439 	  while (tail != curr && (tail = prev) != NULL);
   2440 
   2441 	  /* But wait, there's more!  Input sections up to 240000
   2442 	     bytes before the stub section can be handled by it too.
   2443 	     Don't do this if we have a really large section after the
   2444 	     stubs, as adding more stubs increases the chance that
   2445 	     branches may not reach into the stub section.  */
   2446 	  if (!stubs_always_before_branch && !big_sec)
   2447 	    {
   2448 	      total = 0;
   2449 	      while (prev != NULL
   2450 		     && ((total += tail->output_offset - prev->output_offset)
   2451 			 < stub_group_size))
   2452 		{
   2453 		  tail = prev;
   2454 		  prev = PREV_SEC (tail);
   2455 		  htab->stub_group[tail->id].link_sec = curr;
   2456 		}
   2457 	    }
   2458 	  tail = prev;
   2459 	}
   2460     }
   2461   while (list-- != htab->input_list);
   2462   free (htab->input_list);
   2463 #undef PREV_SEC
   2464 }
   2465 
   2466 /* Read in all local syms for all input bfds, and create hash entries
   2467    for export stubs if we are building a multi-subspace shared lib.
   2468    Returns -1 on error, 1 if export stubs created, 0 otherwise.  */
   2469 
   2470 static int
   2471 get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
   2472 {
   2473   unsigned int bfd_indx;
   2474   Elf_Internal_Sym *local_syms, **all_local_syms;
   2475   int stub_changed = 0;
   2476   struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
   2477 
   2478   if (htab == NULL)
   2479     return -1;
   2480 
   2481   /* We want to read in symbol extension records only once.  To do this
   2482      we need to read in the local symbols in parallel and save them for
   2483      later use; so hold pointers to the local symbols in an array.  */
   2484   size_t amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
   2485   all_local_syms = bfd_zmalloc (amt);
   2486   htab->all_local_syms = all_local_syms;
   2487   if (all_local_syms == NULL)
   2488     return -1;
   2489 
   2490   /* Walk over all the input BFDs, swapping in local symbols.
   2491      If we are creating a shared library, create hash entries for the
   2492      export stubs.  */
   2493   for (bfd_indx = 0;
   2494        input_bfd != NULL;
   2495        input_bfd = input_bfd->link.next, bfd_indx++)
   2496     {
   2497       Elf_Internal_Shdr *symtab_hdr;
   2498 
   2499       /* We'll need the symbol table in a second.  */
   2500       symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
   2501       if (symtab_hdr->sh_info == 0)
   2502 	continue;
   2503 
   2504       /* We need an array of the local symbols attached to the input bfd.  */
   2505       local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
   2506       if (local_syms == NULL)
   2507 	{
   2508 	  local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
   2509 					     symtab_hdr->sh_info, 0,
   2510 					     NULL, NULL, NULL);
   2511 	  /* Cache them for elf_link_input_bfd.  */
   2512 	  symtab_hdr->contents = (unsigned char *) local_syms;
   2513 	}
   2514       if (local_syms == NULL)
   2515 	return -1;
   2516 
   2517       all_local_syms[bfd_indx] = local_syms;
   2518 
   2519       if (bfd_link_pic (info) && htab->multi_subspace)
   2520 	{
   2521 	  struct elf_link_hash_entry **eh_syms;
   2522 	  struct elf_link_hash_entry **eh_symend;
   2523 	  unsigned int symcount;
   2524 
   2525 	  symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
   2526 		      - symtab_hdr->sh_info);
   2527 	  eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
   2528 	  eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
   2529 
   2530 	  /* Look through the global syms for functions;  We need to
   2531 	     build export stubs for all globally visible functions.  */
   2532 	  for (; eh_syms < eh_symend; eh_syms++)
   2533 	    {
   2534 	      struct elf32_hppa_link_hash_entry *hh;
   2535 
   2536 	      hh = hppa_elf_hash_entry (*eh_syms);
   2537 
   2538 	      while (hh->eh.root.type == bfd_link_hash_indirect
   2539 		     || hh->eh.root.type == bfd_link_hash_warning)
   2540 		   hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
   2541 
   2542 	      /* At this point in the link, undefined syms have been
   2543 		 resolved, so we need to check that the symbol was
   2544 		 defined in this BFD.  */
   2545 	      if ((hh->eh.root.type == bfd_link_hash_defined
   2546 		   || hh->eh.root.type == bfd_link_hash_defweak)
   2547 		  && hh->eh.type == STT_FUNC
   2548 		  && hh->eh.root.u.def.section->output_section != NULL
   2549 		  && (hh->eh.root.u.def.section->output_section->owner
   2550 		      == output_bfd)
   2551 		  && hh->eh.root.u.def.section->owner == input_bfd
   2552 		  && hh->eh.def_regular
   2553 		  && !hh->eh.forced_local
   2554 		  && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
   2555 		{
   2556 		  asection *sec;
   2557 		  const char *stub_name;
   2558 		  struct elf32_hppa_stub_hash_entry *hsh;
   2559 
   2560 		  sec = hh->eh.root.u.def.section;
   2561 		  stub_name = hh_name (hh);
   2562 		  hsh = hppa_stub_hash_lookup (&htab->bstab,
   2563 						      stub_name,
   2564 						      false, false);
   2565 		  if (hsh == NULL)
   2566 		    {
   2567 		      hsh = hppa_add_stub (stub_name, sec, htab);
   2568 		      if (!hsh)
   2569 			return -1;
   2570 
   2571 		      hsh->target_value = hh->eh.root.u.def.value;
   2572 		      hsh->target_section = hh->eh.root.u.def.section;
   2573 		      hsh->stub_type = hppa_stub_export;
   2574 		      hsh->hh = hh;
   2575 		      stub_changed = 1;
   2576 		    }
   2577 		  else
   2578 		    {
   2579 		      /* xgettext:c-format */
   2580 		      _bfd_error_handler (_("%pB: duplicate export stub %s"),
   2581 					  input_bfd, stub_name);
   2582 		    }
   2583 		}
   2584 	    }
   2585 	}
   2586     }
   2587 
   2588   return stub_changed;
   2589 }
   2590 
   2591 /* Determine and set the size of the stub section for a final link.
   2592 
   2593    The basic idea here is to examine all the relocations looking for
   2594    PC-relative calls to a target that is unreachable with a "bl"
   2595    instruction.  */
   2596 
   2597 bool
   2598 elf32_hppa_size_stubs
   2599   (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
   2600    bool multi_subspace, bfd_signed_vma group_size,
   2601    asection * (*add_stub_section) (const char *, asection *),
   2602    void (*layout_sections_again) (void))
   2603 {
   2604   bfd_size_type stub_group_size;
   2605   bool stubs_always_before_branch;
   2606   bool stub_changed;
   2607   struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
   2608 
   2609   if (htab == NULL)
   2610     return false;
   2611 
   2612   /* Stash our params away.  */
   2613   htab->stub_bfd = stub_bfd;
   2614   htab->multi_subspace = multi_subspace;
   2615   htab->add_stub_section = add_stub_section;
   2616   htab->layout_sections_again = layout_sections_again;
   2617   stubs_always_before_branch = group_size < 0;
   2618   if (group_size < 0)
   2619     stub_group_size = -group_size;
   2620   else
   2621     stub_group_size = group_size;
   2622   if (stub_group_size == 1)
   2623     {
   2624       /* Default values.  */
   2625       if (stubs_always_before_branch)
   2626 	{
   2627 	  stub_group_size = 7680000;
   2628 	  if (htab->has_17bit_branch || htab->multi_subspace)
   2629 	    stub_group_size = 240000;
   2630 	  if (htab->has_12bit_branch)
   2631 	    stub_group_size = 7500;
   2632 	}
   2633       else
   2634 	{
   2635 	  stub_group_size = 6971392;
   2636 	  if (htab->has_17bit_branch || htab->multi_subspace)
   2637 	    stub_group_size = 217856;
   2638 	  if (htab->has_12bit_branch)
   2639 	    stub_group_size = 6808;
   2640 	}
   2641     }
   2642 
   2643   group_sections (htab, stub_group_size, stubs_always_before_branch);
   2644 
   2645   switch (get_local_syms (output_bfd, info->input_bfds, info))
   2646     {
   2647     default:
   2648       if (htab->all_local_syms)
   2649 	goto error_ret_free_local;
   2650       return false;
   2651 
   2652     case 0:
   2653       stub_changed = false;
   2654       break;
   2655 
   2656     case 1:
   2657       stub_changed = true;
   2658       break;
   2659     }
   2660 
   2661   while (1)
   2662     {
   2663       bfd *input_bfd;
   2664       unsigned int bfd_indx;
   2665       asection *stub_sec;
   2666 
   2667       for (input_bfd = info->input_bfds, bfd_indx = 0;
   2668 	   input_bfd != NULL;
   2669 	   input_bfd = input_bfd->link.next, bfd_indx++)
   2670 	{
   2671 	  Elf_Internal_Shdr *symtab_hdr;
   2672 	  asection *section;
   2673 	  Elf_Internal_Sym *local_syms;
   2674 
   2675 	  /* We'll need the symbol table in a second.  */
   2676 	  symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
   2677 	  if (symtab_hdr->sh_info == 0)
   2678 	    continue;
   2679 
   2680 	  local_syms = htab->all_local_syms[bfd_indx];
   2681 
   2682 	  /* Walk over each section attached to the input bfd.  */
   2683 	  for (section = input_bfd->sections;
   2684 	       section != NULL;
   2685 	       section = section->next)
   2686 	    {
   2687 	      Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
   2688 
   2689 	      /* If there aren't any relocs, then there's nothing more
   2690 		 to do.  */
   2691 	      if ((section->flags & SEC_RELOC) == 0
   2692 		  || (section->flags & SEC_ALLOC) == 0
   2693 		  || (section->flags & SEC_LOAD) == 0
   2694 		  || (section->flags & SEC_CODE) == 0
   2695 		  || section->reloc_count == 0)
   2696 		continue;
   2697 
   2698 	      /* If this section is a link-once section that will be
   2699 		 discarded, then don't create any stubs.  */
   2700 	      if (section->output_section == NULL
   2701 		  || section->output_section->owner != output_bfd)
   2702 		continue;
   2703 
   2704 	      /* Get the relocs.  */
   2705 	      internal_relocs
   2706 		= _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
   2707 					     info->keep_memory);
   2708 	      if (internal_relocs == NULL)
   2709 		goto error_ret_free_local;
   2710 
   2711 	      /* Now examine each relocation.  */
   2712 	      irela = internal_relocs;
   2713 	      irelaend = irela + section->reloc_count;
   2714 	      for (; irela < irelaend; irela++)
   2715 		{
   2716 		  unsigned int r_type, r_indx;
   2717 		  enum elf32_hppa_stub_type stub_type;
   2718 		  struct elf32_hppa_stub_hash_entry *hsh;
   2719 		  asection *sym_sec;
   2720 		  bfd_vma sym_value;
   2721 		  bfd_vma destination;
   2722 		  struct elf32_hppa_link_hash_entry *hh;
   2723 		  char *stub_name;
   2724 		  const asection *id_sec;
   2725 
   2726 		  r_type = ELF32_R_TYPE (irela->r_info);
   2727 		  r_indx = ELF32_R_SYM (irela->r_info);
   2728 
   2729 		  if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
   2730 		    {
   2731 		      bfd_set_error (bfd_error_bad_value);
   2732 		    error_ret_free_internal:
   2733 		      if (elf_section_data (section)->relocs == NULL)
   2734 			free (internal_relocs);
   2735 		      goto error_ret_free_local;
   2736 		    }
   2737 
   2738 		  /* Only look for stubs on call instructions.  */
   2739 		  if (r_type != (unsigned int) R_PARISC_PCREL12F
   2740 		      && r_type != (unsigned int) R_PARISC_PCREL17F
   2741 		      && r_type != (unsigned int) R_PARISC_PCREL22F)
   2742 		    continue;
   2743 
   2744 		  /* Now determine the call target, its name, value,
   2745 		     section.  */
   2746 		  sym_sec = NULL;
   2747 		  sym_value = 0;
   2748 		  destination = -1;
   2749 		  hh = NULL;
   2750 		  if (r_indx < symtab_hdr->sh_info)
   2751 		    {
   2752 		      /* It's a local symbol.  */
   2753 		      Elf_Internal_Sym *sym;
   2754 		      Elf_Internal_Shdr *hdr;
   2755 		      unsigned int shndx;
   2756 
   2757 		      sym = local_syms + r_indx;
   2758 		      if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
   2759 			sym_value = sym->st_value;
   2760 		      shndx = sym->st_shndx;
   2761 		      if (shndx < elf_numsections (input_bfd))
   2762 			{
   2763 			  hdr = elf_elfsections (input_bfd)[shndx];
   2764 			  sym_sec = hdr->bfd_section;
   2765 			  destination = (sym_value + irela->r_addend
   2766 					 + sym_sec->output_offset
   2767 					 + sym_sec->output_section->vma);
   2768 			}
   2769 		    }
   2770 		  else
   2771 		    {
   2772 		      /* It's an external symbol.  */
   2773 		      int e_indx;
   2774 
   2775 		      e_indx = r_indx - symtab_hdr->sh_info;
   2776 		      hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
   2777 
   2778 		      while (hh->eh.root.type == bfd_link_hash_indirect
   2779 			     || hh->eh.root.type == bfd_link_hash_warning)
   2780 			hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
   2781 
   2782 		      if (hh->eh.root.type == bfd_link_hash_defined
   2783 			  || hh->eh.root.type == bfd_link_hash_defweak)
   2784 			{
   2785 			  sym_sec = hh->eh.root.u.def.section;
   2786 			  sym_value = hh->eh.root.u.def.value;
   2787 			  if (sym_sec->output_section != NULL)
   2788 			    destination = (sym_value + irela->r_addend
   2789 					   + sym_sec->output_offset
   2790 					   + sym_sec->output_section->vma);
   2791 			}
   2792 		      else if (hh->eh.root.type == bfd_link_hash_undefweak)
   2793 			{
   2794 			  if (! bfd_link_pic (info))
   2795 			    continue;
   2796 			}
   2797 		      else if (hh->eh.root.type == bfd_link_hash_undefined)
   2798 			{
   2799 			  if (! (info->unresolved_syms_in_objects == RM_IGNORE
   2800 				 && (ELF_ST_VISIBILITY (hh->eh.other)
   2801 				     == STV_DEFAULT)
   2802 				 && hh->eh.type != STT_PARISC_MILLI))
   2803 			    continue;
   2804 			}
   2805 		      else
   2806 			{
   2807 			  bfd_set_error (bfd_error_bad_value);
   2808 			  goto error_ret_free_internal;
   2809 			}
   2810 		    }
   2811 
   2812 		  /* Determine what (if any) linker stub is needed.  */
   2813 		  stub_type = hppa_type_of_stub (section, irela, hh,
   2814 						 destination, info);
   2815 		  if (stub_type == hppa_stub_none)
   2816 		    continue;
   2817 
   2818 		  /* Support for grouping stub sections.  */
   2819 		  id_sec = htab->stub_group[section->id].link_sec;
   2820 
   2821 		  /* Get the name of this stub.  */
   2822 		  stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
   2823 		  if (!stub_name)
   2824 		    goto error_ret_free_internal;
   2825 
   2826 		  hsh = hppa_stub_hash_lookup (&htab->bstab,
   2827 						      stub_name,
   2828 						      false, false);
   2829 		  if (hsh != NULL)
   2830 		    {
   2831 		      /* The proper stub has already been created.  */
   2832 		      free (stub_name);
   2833 		      continue;
   2834 		    }
   2835 
   2836 		  hsh = hppa_add_stub (stub_name, section, htab);
   2837 		  if (hsh == NULL)
   2838 		    {
   2839 		      free (stub_name);
   2840 		      goto error_ret_free_internal;
   2841 		    }
   2842 
   2843 		  hsh->target_value = sym_value;
   2844 		  hsh->target_section = sym_sec;
   2845 		  hsh->stub_type = stub_type;
   2846 		  if (bfd_link_pic (info))
   2847 		    {
   2848 		      if (stub_type == hppa_stub_import)
   2849 			hsh->stub_type = hppa_stub_import_shared;
   2850 		      else if (stub_type == hppa_stub_long_branch)
   2851 			hsh->stub_type = hppa_stub_long_branch_shared;
   2852 		    }
   2853 		  hsh->hh = hh;
   2854 		  stub_changed = true;
   2855 		}
   2856 
   2857 	      /* We're done with the internal relocs, free them.  */
   2858 	      if (elf_section_data (section)->relocs == NULL)
   2859 		free (internal_relocs);
   2860 	    }
   2861 	}
   2862 
   2863       if (!stub_changed)
   2864 	break;
   2865 
   2866       /* OK, we've added some stubs.  Find out the new size of the
   2867 	 stub sections.  */
   2868       for (stub_sec = htab->stub_bfd->sections;
   2869 	   stub_sec != NULL;
   2870 	   stub_sec = stub_sec->next)
   2871 	if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
   2872 	  stub_sec->size = 0;
   2873 
   2874       bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
   2875 
   2876       /* Ask the linker to do its stuff.  */
   2877       (*htab->layout_sections_again) ();
   2878       stub_changed = false;
   2879     }
   2880 
   2881   free (htab->all_local_syms);
   2882   return true;
   2883 
   2884  error_ret_free_local:
   2885   free (htab->all_local_syms);
   2886   return false;
   2887 }
   2888 
   2889 /* For a final link, this function is called after we have sized the
   2890    stubs to provide a value for __gp.  */
   2891 
   2892 bool
   2893 elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
   2894 {
   2895   struct bfd_link_hash_entry *h;
   2896   asection *sec = NULL;
   2897   bfd_vma gp_val = 0;
   2898 
   2899   h = bfd_link_hash_lookup (info->hash, "$global$", false, false, false);
   2900 
   2901   if (h != NULL
   2902       && (h->type == bfd_link_hash_defined
   2903 	  || h->type == bfd_link_hash_defweak))
   2904     {
   2905       gp_val = h->u.def.value;
   2906       sec = h->u.def.section;
   2907     }
   2908   else
   2909     {
   2910       asection *splt = bfd_get_section_by_name (abfd, ".plt");
   2911       asection *sgot = bfd_get_section_by_name (abfd, ".got");
   2912 
   2913       /* Choose to point our LTP at, in this order, one of .plt, .got,
   2914 	 or .data, if these sections exist.  In the case of choosing
   2915 	 .plt try to make the LTP ideal for addressing anywhere in the
   2916 	 .plt or .got with a 14 bit signed offset.  Typically, the end
   2917 	 of the .plt is the start of the .got, so choose .plt + 0x2000
   2918 	 if either the .plt or .got is larger than 0x2000.  If both
   2919 	 the .plt and .got are smaller than 0x2000, choose the end of
   2920 	 the .plt section.  */
   2921       sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
   2922 	  ? NULL : splt;
   2923       if (sec != NULL)
   2924 	{
   2925 	  gp_val = sec->size;
   2926 	  if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
   2927 	    {
   2928 	      gp_val = 0x2000;
   2929 	    }
   2930 	}
   2931       else
   2932 	{
   2933 	  sec = sgot;
   2934 	  if (sec != NULL)
   2935 	    {
   2936 	      if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
   2937 		{
   2938 		  /* We know we don't have a .plt.  If .got is large,
   2939 		     offset our LTP.  */
   2940 		  if (sec->size > 0x2000)
   2941 		    gp_val = 0x2000;
   2942 		}
   2943 	    }
   2944 	  else
   2945 	    {
   2946 	      /* No .plt or .got.  Who cares what the LTP is?  */
   2947 	      sec = bfd_get_section_by_name (abfd, ".data");
   2948 	    }
   2949 	}
   2950 
   2951       if (h != NULL)
   2952 	{
   2953 	  h->type = bfd_link_hash_defined;
   2954 	  h->u.def.value = gp_val;
   2955 	  if (sec != NULL)
   2956 	    h->u.def.section = sec;
   2957 	  else
   2958 	    h->u.def.section = bfd_abs_section_ptr;
   2959 	}
   2960     }
   2961 
   2962   if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
   2963     {
   2964       if (sec != NULL && sec->output_section != NULL)
   2965 	gp_val += sec->output_section->vma + sec->output_offset;
   2966 
   2967       elf_gp (abfd) = gp_val;
   2968     }
   2969   return true;
   2970 }
   2971 
   2972 /* Build all the stubs associated with the current output file.  The
   2973    stubs are kept in a hash table attached to the main linker hash
   2974    table.  We also set up the .plt entries for statically linked PIC
   2975    functions here.  This function is called via hppaelf_finish in the
   2976    linker.  */
   2977 
   2978 bool
   2979 elf32_hppa_build_stubs (struct bfd_link_info *info)
   2980 {
   2981   asection *stub_sec;
   2982   struct bfd_hash_table *table;
   2983   struct elf32_hppa_link_hash_table *htab;
   2984 
   2985   htab = hppa_link_hash_table (info);
   2986   if (htab == NULL)
   2987     return false;
   2988 
   2989   for (stub_sec = htab->stub_bfd->sections;
   2990        stub_sec != NULL;
   2991        stub_sec = stub_sec->next)
   2992     if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
   2993 	&& stub_sec->size != 0)
   2994       {
   2995 	/* Allocate memory to hold the linker stubs.  */
   2996 	stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
   2997 	if (stub_sec->contents == NULL)
   2998 	  return false;
   2999 	stub_sec->size = 0;
   3000       }
   3001 
   3002   /* Build the stubs as directed by the stub hash table.  */
   3003   table = &htab->bstab;
   3004   bfd_hash_traverse (table, hppa_build_one_stub, info);
   3005 
   3006   return true;
   3007 }
   3008 
   3009 /* Return the base vma address which should be subtracted from the real
   3010    address when resolving a dtpoff relocation.
   3011    This is PT_TLS segment p_vaddr.  */
   3012 
   3013 static bfd_vma
   3014 dtpoff_base (struct bfd_link_info *info)
   3015 {
   3016   /* If tls_sec is NULL, we should have signalled an error already.  */
   3017   if (elf_hash_table (info)->tls_sec == NULL)
   3018     return 0;
   3019   return elf_hash_table (info)->tls_sec->vma;
   3020 }
   3021 
   3022 /* Return the relocation value for R_PARISC_TLS_TPOFF*..  */
   3023 
   3024 static bfd_vma
   3025 tpoff (struct bfd_link_info *info, bfd_vma address)
   3026 {
   3027   struct elf_link_hash_table *htab = elf_hash_table (info);
   3028 
   3029   /* If tls_sec is NULL, we should have signalled an error already.  */
   3030   if (htab->tls_sec == NULL)
   3031     return 0;
   3032   /* hppa TLS ABI is variant I and static TLS block start just after
   3033      tcbhead structure which has 2 pointer fields.  */
   3034   return (address - htab->tls_sec->vma
   3035 	  + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
   3036 }
   3037 
   3038 /* Perform a final link.  */
   3039 
   3040 static bool
   3041 elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
   3042 {
   3043   struct stat buf;
   3044 
   3045   /* Invoke the regular ELF linker to do all the work.  */
   3046   if (!bfd_elf_final_link (abfd, info))
   3047     return false;
   3048 
   3049   /* If we're producing a final executable, sort the contents of the
   3050      unwind section.  */
   3051   if (bfd_link_relocatable (info))
   3052     return true;
   3053 
   3054   /* Do not attempt to sort non-regular files.  This is here
   3055      especially for configure scripts and kernel builds which run
   3056      tests with "ld [...] -o /dev/null".  */
   3057   if (stat (bfd_get_filename (abfd), &buf) != 0
   3058       || !S_ISREG(buf.st_mode))
   3059     return true;
   3060 
   3061   return elf_hppa_sort_unwind (abfd);
   3062 }
   3063 
   3064 /* Record the lowest address for the data and text segments.  */
   3065 
   3066 static void
   3067 hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
   3068 {
   3069   struct elf32_hppa_link_hash_table *htab;
   3070 
   3071   htab = (struct elf32_hppa_link_hash_table*) data;
   3072   if (htab == NULL)
   3073     return;
   3074 
   3075   if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
   3076     {
   3077       bfd_vma value;
   3078       Elf_Internal_Phdr *p;
   3079 
   3080       p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
   3081       BFD_ASSERT (p != NULL);
   3082       value = p->p_vaddr;
   3083 
   3084       if ((section->flags & SEC_READONLY) != 0)
   3085 	{
   3086 	  if (value < htab->text_segment_base)
   3087 	    htab->text_segment_base = value;
   3088 	}
   3089       else
   3090 	{
   3091 	  if (value < htab->data_segment_base)
   3092 	    htab->data_segment_base = value;
   3093 	}
   3094     }
   3095 }
   3096 
   3097 /* Perform a relocation as part of a final link.  */
   3098 
   3099 static bfd_reloc_status_type
   3100 final_link_relocate (asection *input_section,
   3101 		     bfd_byte *contents,
   3102 		     const Elf_Internal_Rela *rela,
   3103 		     bfd_vma value,
   3104 		     struct elf32_hppa_link_hash_table *htab,
   3105 		     asection *sym_sec,
   3106 		     struct elf32_hppa_link_hash_entry *hh,
   3107 		     struct bfd_link_info *info)
   3108 {
   3109   unsigned int insn;
   3110   unsigned int r_type = ELF32_R_TYPE (rela->r_info);
   3111   unsigned int orig_r_type = r_type;
   3112   reloc_howto_type *howto = elf_hppa_howto_table + r_type;
   3113   int r_format;
   3114   enum hppa_reloc_field_selector_type_alt r_field;
   3115   bfd *input_bfd = input_section->owner;
   3116   bfd_vma offset = rela->r_offset;
   3117   bfd_vma max_branch_offset = 0;
   3118   bfd_byte *hit_data = contents + offset;
   3119   bfd_signed_vma addend = rela->r_addend;
   3120   bfd_vma location;
   3121   struct elf32_hppa_stub_hash_entry *hsh = NULL;
   3122   int val;
   3123 
   3124   if (r_type == R_PARISC_NONE)
   3125     return bfd_reloc_ok;
   3126 
   3127   insn = bfd_get_32 (input_bfd, hit_data);
   3128 
   3129   /* Find out where we are and where we're going.  */
   3130   location = (offset +
   3131 	      input_section->output_offset +
   3132 	      input_section->output_section->vma);
   3133 
   3134   /* If we are not building a shared library, convert DLTIND relocs to
   3135      DPREL relocs.  */
   3136   if (!bfd_link_pic (info))
   3137     {
   3138       switch (r_type)
   3139 	{
   3140 	  case R_PARISC_DLTIND21L:
   3141 	  case R_PARISC_TLS_GD21L:
   3142 	  case R_PARISC_TLS_LDM21L:
   3143 	  case R_PARISC_TLS_IE21L:
   3144 	    r_type = R_PARISC_DPREL21L;
   3145 	    break;
   3146 
   3147 	  case R_PARISC_DLTIND14R:
   3148 	  case R_PARISC_TLS_GD14R:
   3149 	  case R_PARISC_TLS_LDM14R:
   3150 	  case R_PARISC_TLS_IE14R:
   3151 	    r_type = R_PARISC_DPREL14R;
   3152 	    break;
   3153 
   3154 	  case R_PARISC_DLTIND14F:
   3155 	    r_type = R_PARISC_DPREL14F;
   3156 	    break;
   3157 	}
   3158     }
   3159 
   3160   switch (r_type)
   3161     {
   3162     case R_PARISC_PCREL12F:
   3163     case R_PARISC_PCREL17F:
   3164     case R_PARISC_PCREL22F:
   3165       /* If this call should go via the plt, find the import stub in
   3166 	 the stub hash.  */
   3167       if (sym_sec == NULL
   3168 	  || sym_sec->output_section == NULL
   3169 	  || (hh != NULL
   3170 	      && hh->eh.plt.offset != (bfd_vma) -1
   3171 	      && hh->eh.dynindx != -1
   3172 	      && !hh->plabel
   3173 	      && (bfd_link_pic (info)
   3174 		  || !hh->eh.def_regular
   3175 		  || hh->eh.root.type == bfd_link_hash_defweak)))
   3176 	{
   3177 	  hsh = hppa_get_stub_entry (input_section, sym_sec,
   3178 				     hh, rela, htab);
   3179 	  if (hsh != NULL)
   3180 	    {
   3181 	      value = (hsh->stub_offset
   3182 		       + hsh->stub_sec->output_offset
   3183 		       + hsh->stub_sec->output_section->vma);
   3184 	      addend = 0;
   3185 	    }
   3186 	  else if (sym_sec == NULL && hh != NULL
   3187 		   && hh->eh.root.type == bfd_link_hash_undefweak)
   3188 	    {
   3189 	      /* It's OK if undefined weak.  Calls to undefined weak
   3190 		 symbols behave as if the "called" function
   3191 		 immediately returns.  We can thus call to a weak
   3192 		 function without first checking whether the function
   3193 		 is defined.  */
   3194 	      value = location;
   3195 	      addend = 8;
   3196 	    }
   3197 	  else
   3198 	    return bfd_reloc_undefined;
   3199 	}
   3200       /* Fall thru.  */
   3201 
   3202     case R_PARISC_PCREL21L:
   3203     case R_PARISC_PCREL17C:
   3204     case R_PARISC_PCREL17R:
   3205     case R_PARISC_PCREL14R:
   3206     case R_PARISC_PCREL14F:
   3207     case R_PARISC_PCREL32:
   3208       /* Make it a pc relative offset.  */
   3209       value -= location;
   3210       addend -= 8;
   3211       break;
   3212 
   3213     case R_PARISC_DPREL21L:
   3214     case R_PARISC_DPREL14R:
   3215     case R_PARISC_DPREL14F:
   3216       /* Convert instructions that use the linkage table pointer (r19) to
   3217 	 instructions that use the global data pointer (dp).  This is the
   3218 	 most efficient way of using PIC code in an incomplete executable,
   3219 	 but the user must follow the standard runtime conventions for
   3220 	 accessing data for this to work.  */
   3221       if (orig_r_type != r_type)
   3222 	{
   3223 	  if (r_type == R_PARISC_DPREL21L)
   3224 	    {
   3225 	      /* GCC sometimes uses a register other than r19 for the
   3226 		 operation, so we must convert any addil instruction
   3227 		 that uses this relocation.  */
   3228 	      if ((insn & 0xfc000000) == OP_ADDIL << 26)
   3229 		insn = ADDIL_DP;
   3230 	      else
   3231 		/* We must have a ldil instruction.  It's too hard to find
   3232 		   and convert the associated add instruction, so issue an
   3233 		   error.  */
   3234 		_bfd_error_handler
   3235 		  /* xgettext:c-format */
   3236 		  (_("%pB(%pA+%#" PRIx64 "): %s fixup for insn %#x "
   3237 		     "is not supported in a non-shared link"),
   3238 		   input_bfd,
   3239 		   input_section,
   3240 		   (uint64_t) offset,
   3241 		   howto->name,
   3242 		   insn);
   3243 	    }
   3244 	  else if (r_type == R_PARISC_DPREL14F)
   3245 	    {
   3246 	      /* This must be a format 1 load/store.  Change the base
   3247 		 register to dp.  */
   3248 	      insn = (insn & 0xfc1ffff) | (27 << 21);
   3249 	    }
   3250 	}
   3251 
   3252       /* For all the DP relative relocations, we need to examine the symbol's
   3253 	 section.  If it has no section or if it's a code section, then
   3254 	 "data pointer relative" makes no sense.  In that case we don't
   3255 	 adjust the "value", and for 21 bit addil instructions, we change the
   3256 	 source addend register from %dp to %r0.  This situation commonly
   3257 	 arises for undefined weak symbols and when a variable's "constness"
   3258 	 is declared differently from the way the variable is defined.  For
   3259 	 instance: "extern int foo" with foo defined as "const int foo".  */
   3260       if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
   3261 	{
   3262 	  if ((insn & ((0x3fu << 26) | (0x1f << 21)))
   3263 	      == ((OP_ADDIL << 26) | (27 << 21)))
   3264 	    {
   3265 	      insn &= ~ (0x1f << 21);
   3266 	    }
   3267 	  /* Now try to make things easy for the dynamic linker.  */
   3268 
   3269 	  break;
   3270 	}
   3271       /* Fall thru.  */
   3272 
   3273     case R_PARISC_DLTIND21L:
   3274     case R_PARISC_DLTIND14R:
   3275     case R_PARISC_DLTIND14F:
   3276     case R_PARISC_TLS_GD21L:
   3277     case R_PARISC_TLS_LDM21L:
   3278     case R_PARISC_TLS_IE21L:
   3279     case R_PARISC_TLS_GD14R:
   3280     case R_PARISC_TLS_LDM14R:
   3281     case R_PARISC_TLS_IE14R:
   3282       value -= elf_gp (input_section->output_section->owner);
   3283       break;
   3284 
   3285     case R_PARISC_SEGREL32:
   3286       if ((sym_sec->flags & SEC_CODE) != 0)
   3287 	value -= htab->text_segment_base;
   3288       else
   3289 	value -= htab->data_segment_base;
   3290       break;
   3291 
   3292     default:
   3293       break;
   3294     }
   3295 
   3296   switch (r_type)
   3297     {
   3298     case R_PARISC_DIR32:
   3299     case R_PARISC_DIR14F:
   3300     case R_PARISC_DIR17F:
   3301     case R_PARISC_PCREL17C:
   3302     case R_PARISC_PCREL14F:
   3303     case R_PARISC_PCREL32:
   3304     case R_PARISC_DPREL14F:
   3305     case R_PARISC_PLABEL32:
   3306     case R_PARISC_DLTIND14F:
   3307     case R_PARISC_SEGBASE:
   3308     case R_PARISC_SEGREL32:
   3309     case R_PARISC_TLS_DTPMOD32:
   3310     case R_PARISC_TLS_DTPOFF32:
   3311     case R_PARISC_TLS_TPREL32:
   3312       r_field = e_fsel;
   3313       break;
   3314 
   3315     case R_PARISC_DLTIND21L:
   3316     case R_PARISC_PCREL21L:
   3317     case R_PARISC_PLABEL21L:
   3318       r_field = e_lsel;
   3319       break;
   3320 
   3321     case R_PARISC_DIR21L:
   3322     case R_PARISC_DPREL21L:
   3323     case R_PARISC_TLS_GD21L:
   3324     case R_PARISC_TLS_LDM21L:
   3325     case R_PARISC_TLS_LDO21L:
   3326     case R_PARISC_TLS_IE21L:
   3327     case R_PARISC_TLS_LE21L:
   3328       r_field = e_lrsel;
   3329       break;
   3330 
   3331     case R_PARISC_PCREL17R:
   3332     case R_PARISC_PCREL14R:
   3333     case R_PARISC_PLABEL14R:
   3334     case R_PARISC_DLTIND14R:
   3335       r_field = e_rsel;
   3336       break;
   3337 
   3338     case R_PARISC_DIR17R:
   3339     case R_PARISC_DIR14R:
   3340     case R_PARISC_DPREL14R:
   3341     case R_PARISC_TLS_GD14R:
   3342     case R_PARISC_TLS_LDM14R:
   3343     case R_PARISC_TLS_LDO14R:
   3344     case R_PARISC_TLS_IE14R:
   3345     case R_PARISC_TLS_LE14R:
   3346       r_field = e_rrsel;
   3347       break;
   3348 
   3349     case R_PARISC_PCREL12F:
   3350     case R_PARISC_PCREL17F:
   3351     case R_PARISC_PCREL22F:
   3352       r_field = e_fsel;
   3353 
   3354       if (r_type == (unsigned int) R_PARISC_PCREL17F)
   3355 	{
   3356 	  max_branch_offset = (1 << (17-1)) << 2;
   3357 	}
   3358       else if (r_type == (unsigned int) R_PARISC_PCREL12F)
   3359 	{
   3360 	  max_branch_offset = (1 << (12-1)) << 2;
   3361 	}
   3362       else
   3363 	{
   3364 	  max_branch_offset = (1 << (22-1)) << 2;
   3365 	}
   3366 
   3367       /* sym_sec is NULL on undefined weak syms or when shared on
   3368 	 undefined syms.  We've already checked for a stub for the
   3369 	 shared undefined case.  */
   3370       if (sym_sec == NULL)
   3371 	break;
   3372 
   3373       /* If the branch is out of reach, then redirect the
   3374 	 call to the local stub for this function.  */
   3375       if (value + addend + max_branch_offset >= 2*max_branch_offset)
   3376 	{
   3377 	  hsh = hppa_get_stub_entry (input_section, sym_sec,
   3378 				     hh, rela, htab);
   3379 	  if (hsh == NULL)
   3380 	    return bfd_reloc_undefined;
   3381 
   3382 	  /* Munge up the value and addend so that we call the stub
   3383 	     rather than the procedure directly.  */
   3384 	  value = (hsh->stub_offset
   3385 		   + hsh->stub_sec->output_offset
   3386 		   + hsh->stub_sec->output_section->vma
   3387 		   - location);
   3388 	  addend = -8;
   3389 	}
   3390       break;
   3391 
   3392     /* Something we don't know how to handle.  */
   3393     default:
   3394       return bfd_reloc_notsupported;
   3395     }
   3396 
   3397   /* Make sure we can reach the stub.  */
   3398   if (max_branch_offset != 0
   3399       && value + addend + max_branch_offset >= 2*max_branch_offset)
   3400     {
   3401       _bfd_error_handler
   3402 	/* xgettext:c-format */
   3403 	(_("%pB(%pA+%#" PRIx64 "): cannot reach %s, "
   3404 	   "recompile with -ffunction-sections"),
   3405 	 input_bfd,
   3406 	 input_section,
   3407 	 (uint64_t) offset,
   3408 	 hsh->bh_root.string);
   3409       bfd_set_error (bfd_error_bad_value);
   3410       return bfd_reloc_notsupported;
   3411     }
   3412 
   3413   val = hppa_field_adjust (value, addend, r_field);
   3414 
   3415   switch (r_type)
   3416     {
   3417     case R_PARISC_PCREL12F:
   3418     case R_PARISC_PCREL17C:
   3419     case R_PARISC_PCREL17F:
   3420     case R_PARISC_PCREL17R:
   3421     case R_PARISC_PCREL22F:
   3422     case R_PARISC_DIR17F:
   3423     case R_PARISC_DIR17R:
   3424       /* This is a branch.  Divide the offset by four.
   3425 	 Note that we need to decide whether it's a branch or
   3426 	 otherwise by inspecting the reloc.  Inspecting insn won't
   3427 	 work as insn might be from a .word directive.  */
   3428       val >>= 2;
   3429       break;
   3430 
   3431     default:
   3432       break;
   3433     }
   3434 
   3435   r_format = bfd_hppa_insn2fmt (input_bfd, insn);
   3436   switch (r_format)
   3437     {
   3438     case 10:
   3439     case -10:
   3440       if (val & 7)
   3441 	{
   3442 	  _bfd_error_handler
   3443 	    /* xgettext:c-format */
   3444 	    (_("%pB(%pA+%#" PRIx64 "): displacement %#x for insn %#x "
   3445 	       "is not a multiple of 8 (gp %#x)"),
   3446 	     input_bfd,
   3447 	     input_section,
   3448 	     (uint64_t) offset,
   3449 	     val,
   3450 	     insn,
   3451 	     (unsigned int) elf_gp (input_section->output_section->owner));
   3452 	  bfd_set_error (bfd_error_bad_value);
   3453 	  return bfd_reloc_notsupported;
   3454 	}
   3455       break;
   3456 
   3457     case -11:
   3458     case -16:
   3459       if (val & 3)
   3460 	{
   3461 	  _bfd_error_handler
   3462 	    /* xgettext:c-format */
   3463 	    (_("%pB(%pA+%#" PRIx64 "): displacement %#x for insn %#x "
   3464 	       "is not a multiple of 4 (gp %#x)"),
   3465 	     input_bfd,
   3466 	     input_section,
   3467 	     (uint64_t) offset,
   3468 	     val,
   3469 	     insn,
   3470 	     (unsigned int) elf_gp (input_section->output_section->owner));
   3471 	  bfd_set_error (bfd_error_bad_value);
   3472 	  return bfd_reloc_notsupported;
   3473 	}
   3474       break;
   3475 
   3476     default:
   3477       break;
   3478     }
   3479   insn = hppa_rebuild_insn (insn, val, r_format);
   3480 
   3481   /* Update the instruction word.  */
   3482   bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
   3483   return bfd_reloc_ok;
   3484 }
   3485 
   3486 /* Relocate an HPPA ELF section.  */
   3487 
   3488 static int
   3489 elf32_hppa_relocate_section (bfd *output_bfd,
   3490 			     struct bfd_link_info *info,
   3491 			     bfd *input_bfd,
   3492 			     asection *input_section,
   3493 			     bfd_byte *contents,
   3494 			     Elf_Internal_Rela *relocs,
   3495 			     Elf_Internal_Sym *local_syms,
   3496 			     asection **local_sections)
   3497 {
   3498   bfd_vma *local_got_offsets;
   3499   struct elf32_hppa_link_hash_table *htab;
   3500   Elf_Internal_Shdr *symtab_hdr;
   3501   Elf_Internal_Rela *rela;
   3502   Elf_Internal_Rela *relend;
   3503 
   3504   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
   3505 
   3506   htab = hppa_link_hash_table (info);
   3507   if (htab == NULL)
   3508     return false;
   3509 
   3510   local_got_offsets = elf_local_got_offsets (input_bfd);
   3511 
   3512   rela = relocs;
   3513   relend = relocs + input_section->reloc_count;
   3514   for (; rela < relend; rela++)
   3515     {
   3516       unsigned int r_type;
   3517       reloc_howto_type *howto;
   3518       unsigned int r_symndx;
   3519       struct elf32_hppa_link_hash_entry *hh;
   3520       Elf_Internal_Sym *sym;
   3521       asection *sym_sec;
   3522       bfd_vma relocation;
   3523       bfd_reloc_status_type rstatus;
   3524       const char *sym_name;
   3525       bool plabel;
   3526       bool warned_undef;
   3527 
   3528       r_type = ELF32_R_TYPE (rela->r_info);
   3529       if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
   3530 	{
   3531 	  bfd_set_error (bfd_error_bad_value);
   3532 	  return false;
   3533 	}
   3534       if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
   3535 	  || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
   3536 	continue;
   3537 
   3538       r_symndx = ELF32_R_SYM (rela->r_info);
   3539       hh = NULL;
   3540       sym = NULL;
   3541       sym_sec = NULL;
   3542       warned_undef = false;
   3543       if (r_symndx < symtab_hdr->sh_info)
   3544 	{
   3545 	  /* This is a local symbol, h defaults to NULL.  */
   3546 	  sym = local_syms + r_symndx;
   3547 	  sym_sec = local_sections[r_symndx];
   3548 	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
   3549 	}
   3550       else
   3551 	{
   3552 	  struct elf_link_hash_entry *eh;
   3553 	  bool unresolved_reloc, ignored;
   3554 	  struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
   3555 
   3556 	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
   3557 				   r_symndx, symtab_hdr, sym_hashes,
   3558 				   eh, sym_sec, relocation,
   3559 				   unresolved_reloc, warned_undef,
   3560 				   ignored);
   3561 
   3562 	  if (!bfd_link_relocatable (info)
   3563 	      && relocation == 0
   3564 	      && eh->root.type != bfd_link_hash_defined
   3565 	      && eh->root.type != bfd_link_hash_defweak
   3566 	      && eh->root.type != bfd_link_hash_undefweak)
   3567 	    {
   3568 	      if (info->unresolved_syms_in_objects == RM_IGNORE
   3569 		  && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
   3570 		  && eh->type == STT_PARISC_MILLI)
   3571 		{
   3572 		  (*info->callbacks->undefined_symbol)
   3573 		    (info, eh_name (eh), input_bfd,
   3574 		     input_section, rela->r_offset, false);
   3575 		  warned_undef = true;
   3576 		}
   3577 	    }
   3578 	  hh = hppa_elf_hash_entry (eh);
   3579 	}
   3580 
   3581       if (sym_sec != NULL && discarded_section (sym_sec))
   3582 	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
   3583 					 rela, 1, relend,
   3584 					 elf_hppa_howto_table + r_type, 0,
   3585 					 contents);
   3586 
   3587       if (bfd_link_relocatable (info))
   3588 	continue;
   3589 
   3590       /* Do any required modifications to the relocation value, and
   3591 	 determine what types of dynamic info we need to output, if
   3592 	 any.  */
   3593       plabel = 0;
   3594       switch (r_type)
   3595 	{
   3596 	case R_PARISC_DLTIND14F:
   3597 	case R_PARISC_DLTIND14R:
   3598 	case R_PARISC_DLTIND21L:
   3599 	  {
   3600 	    bfd_vma off;
   3601 	    bool do_got = false;
   3602 	    bool reloc = bfd_link_pic (info);
   3603 
   3604 	    /* Relocation is to the entry for this symbol in the
   3605 	       global offset table.  */
   3606 	    if (hh != NULL)
   3607 	      {
   3608 		bool dyn;
   3609 
   3610 		off = hh->eh.got.offset;
   3611 		dyn = htab->etab.dynamic_sections_created;
   3612 		reloc = (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh)
   3613 			 && (reloc
   3614 			     || (hh->eh.dynindx != -1
   3615 				 && !SYMBOL_REFERENCES_LOCAL (info, &hh->eh))));
   3616 		if (!reloc
   3617 		    || !WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
   3618 							 bfd_link_pic (info),
   3619 							 &hh->eh))
   3620 		  {
   3621 		    /* If we aren't going to call finish_dynamic_symbol,
   3622 		       then we need to handle initialisation of the .got
   3623 		       entry and create needed relocs here.  Since the
   3624 		       offset must always be a multiple of 4, we use the
   3625 		       least significant bit to record whether we have
   3626 		       initialised it already.  */
   3627 		    if ((off & 1) != 0)
   3628 		      off &= ~1;
   3629 		    else
   3630 		      {
   3631 			hh->eh.got.offset |= 1;
   3632 			do_got = true;
   3633 		      }
   3634 		  }
   3635 	      }
   3636 	    else
   3637 	      {
   3638 		/* Local symbol case.  */
   3639 		if (local_got_offsets == NULL)
   3640 		  abort ();
   3641 
   3642 		off = local_got_offsets[r_symndx];
   3643 
   3644 		/* The offset must always be a multiple of 4.  We use
   3645 		   the least significant bit to record whether we have
   3646 		   already generated the necessary reloc.  */
   3647 		if ((off & 1) != 0)
   3648 		  off &= ~1;
   3649 		else
   3650 		  {
   3651 		    local_got_offsets[r_symndx] |= 1;
   3652 		    do_got = true;
   3653 		  }
   3654 	      }
   3655 
   3656 	    if (do_got)
   3657 	      {
   3658 		if (reloc)
   3659 		  {
   3660 		    /* Output a dynamic relocation for this GOT entry.
   3661 		       In this case it is relative to the base of the
   3662 		       object because the symbol index is zero.  */
   3663 		    Elf_Internal_Rela outrel;
   3664 		    bfd_byte *loc;
   3665 		    asection *sec = htab->etab.srelgot;
   3666 
   3667 		    outrel.r_offset = (off
   3668 				       + htab->etab.sgot->output_offset
   3669 				       + htab->etab.sgot->output_section->vma);
   3670 		    outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
   3671 		    outrel.r_addend = relocation;
   3672 		    loc = sec->contents;
   3673 		    loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
   3674 		    bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   3675 		  }
   3676 		else
   3677 		  bfd_put_32 (output_bfd, relocation,
   3678 			      htab->etab.sgot->contents + off);
   3679 	      }
   3680 
   3681 	    if (off >= (bfd_vma) -2)
   3682 	      abort ();
   3683 
   3684 	    /* Add the base of the GOT to the relocation value.  */
   3685 	    relocation = (off
   3686 			  + htab->etab.sgot->output_offset
   3687 			  + htab->etab.sgot->output_section->vma);
   3688 	  }
   3689 	  break;
   3690 
   3691 	case R_PARISC_SEGREL32:
   3692 	  /* If this is the first SEGREL relocation, then initialize
   3693 	     the segment base values.  */
   3694 	  if (htab->text_segment_base == (bfd_vma) -1)
   3695 	    bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
   3696 	  break;
   3697 
   3698 	case R_PARISC_PLABEL14R:
   3699 	case R_PARISC_PLABEL21L:
   3700 	case R_PARISC_PLABEL32:
   3701 	  if (htab->etab.dynamic_sections_created)
   3702 	    {
   3703 	      bfd_vma off;
   3704 	      bool do_plt = 0;
   3705 	      /* If we have a global symbol with a PLT slot, then
   3706 		 redirect this relocation to it.  */
   3707 	      if (hh != NULL)
   3708 		{
   3709 		  off = hh->eh.plt.offset;
   3710 		  if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
   3711 							 bfd_link_pic (info),
   3712 							 &hh->eh))
   3713 		    {
   3714 		      /* In a non-shared link, adjust_dynamic_symbol
   3715 			 isn't called for symbols forced local.  We
   3716 			 need to write out the plt entry here.  */
   3717 		      if ((off & 1) != 0)
   3718 			off &= ~1;
   3719 		      else
   3720 			{
   3721 			  hh->eh.plt.offset |= 1;
   3722 			  do_plt = 1;
   3723 			}
   3724 		    }
   3725 		}
   3726 	      else
   3727 		{
   3728 		  bfd_vma *local_plt_offsets;
   3729 
   3730 		  if (local_got_offsets == NULL)
   3731 		    abort ();
   3732 
   3733 		  local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
   3734 		  off = local_plt_offsets[r_symndx];
   3735 
   3736 		  /* As for the local .got entry case, we use the last
   3737 		     bit to record whether we've already initialised
   3738 		     this local .plt entry.  */
   3739 		  if ((off & 1) != 0)
   3740 		    off &= ~1;
   3741 		  else
   3742 		    {
   3743 		      local_plt_offsets[r_symndx] |= 1;
   3744 		      do_plt = 1;
   3745 		    }
   3746 		}
   3747 
   3748 	      if (do_plt)
   3749 		{
   3750 		  if (bfd_link_pic (info))
   3751 		    {
   3752 		      /* Output a dynamic IPLT relocation for this
   3753 			 PLT entry.  */
   3754 		      Elf_Internal_Rela outrel;
   3755 		      bfd_byte *loc;
   3756 		      asection *s = htab->etab.srelplt;
   3757 
   3758 		      outrel.r_offset = (off
   3759 					 + htab->etab.splt->output_offset
   3760 					 + htab->etab.splt->output_section->vma);
   3761 		      outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
   3762 		      outrel.r_addend = relocation;
   3763 		      loc = s->contents;
   3764 		      loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
   3765 		      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   3766 		    }
   3767 		  else
   3768 		    {
   3769 		      bfd_put_32 (output_bfd,
   3770 				  relocation,
   3771 				  htab->etab.splt->contents + off);
   3772 		      bfd_put_32 (output_bfd,
   3773 				  elf_gp (htab->etab.splt->output_section->owner),
   3774 				  htab->etab.splt->contents + off + 4);
   3775 		    }
   3776 		}
   3777 
   3778 	      if (off >= (bfd_vma) -2)
   3779 		abort ();
   3780 
   3781 	      /* PLABELs contain function pointers.  Relocation is to
   3782 		 the entry for the function in the .plt.  The magic +2
   3783 		 offset signals to $$dyncall that the function pointer
   3784 		 is in the .plt and thus has a gp pointer too.
   3785 		 Exception:  Undefined PLABELs should have a value of
   3786 		 zero.  */
   3787 	      if (hh == NULL
   3788 		  || (hh->eh.root.type != bfd_link_hash_undefweak
   3789 		      && hh->eh.root.type != bfd_link_hash_undefined))
   3790 		{
   3791 		  relocation = (off
   3792 				+ htab->etab.splt->output_offset
   3793 				+ htab->etab.splt->output_section->vma
   3794 				+ 2);
   3795 		}
   3796 	      plabel = 1;
   3797 	    }
   3798 	  /* Fall through.  */
   3799 
   3800 	case R_PARISC_DIR17F:
   3801 	case R_PARISC_DIR17R:
   3802 	case R_PARISC_DIR14F:
   3803 	case R_PARISC_DIR14R:
   3804 	case R_PARISC_DIR21L:
   3805 	case R_PARISC_DPREL14F:
   3806 	case R_PARISC_DPREL14R:
   3807 	case R_PARISC_DPREL21L:
   3808 	case R_PARISC_DIR32:
   3809 	  if ((input_section->flags & SEC_ALLOC) == 0)
   3810 	    break;
   3811 
   3812 	  if (bfd_link_pic (info)
   3813 	      ? ((hh == NULL
   3814 		  || hh->eh.dyn_relocs != NULL)
   3815 		 && ((hh != NULL && pc_dynrelocs (hh))
   3816 		     || IS_ABSOLUTE_RELOC (r_type)))
   3817 	      : (hh != NULL
   3818 		 && hh->eh.dyn_relocs != NULL))
   3819 	    {
   3820 	      Elf_Internal_Rela outrel;
   3821 	      bool skip;
   3822 	      asection *sreloc;
   3823 	      bfd_byte *loc;
   3824 
   3825 	      /* When generating a shared object, these relocations
   3826 		 are copied into the output file to be resolved at run
   3827 		 time.  */
   3828 
   3829 	      outrel.r_addend = rela->r_addend;
   3830 	      outrel.r_offset =
   3831 		_bfd_elf_section_offset (output_bfd, info, input_section,
   3832 					 rela->r_offset);
   3833 	      skip = (outrel.r_offset == (bfd_vma) -1
   3834 		      || outrel.r_offset == (bfd_vma) -2);
   3835 	      outrel.r_offset += (input_section->output_offset
   3836 				  + input_section->output_section->vma);
   3837 
   3838 	      if (skip)
   3839 		{
   3840 		  memset (&outrel, 0, sizeof (outrel));
   3841 		}
   3842 	      else if (hh != NULL
   3843 		       && hh->eh.dynindx != -1
   3844 		       && (plabel
   3845 			   || !IS_ABSOLUTE_RELOC (r_type)
   3846 			   || !bfd_link_pic (info)
   3847 			   || !SYMBOLIC_BIND (info, &hh->eh)
   3848 			   || !hh->eh.def_regular))
   3849 		{
   3850 		  outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
   3851 		}
   3852 	      else /* It's a local symbol, or one marked to become local.  */
   3853 		{
   3854 		  int indx = 0;
   3855 
   3856 		  /* Add the absolute offset of the symbol.  */
   3857 		  outrel.r_addend += relocation;
   3858 
   3859 		  /* Global plabels need to be processed by the
   3860 		     dynamic linker so that functions have at most one
   3861 		     fptr.  For this reason, we need to differentiate
   3862 		     between global and local plabels, which we do by
   3863 		     providing the function symbol for a global plabel
   3864 		     reloc, and no symbol for local plabels.  */
   3865 		  if (! plabel
   3866 		      && sym_sec != NULL
   3867 		      && sym_sec->output_section != NULL
   3868 		      && ! bfd_is_abs_section (sym_sec))
   3869 		    {
   3870 		      asection *osec;
   3871 
   3872 		      osec = sym_sec->output_section;
   3873 		      indx = elf_section_data (osec)->dynindx;
   3874 		      if (indx == 0)
   3875 			{
   3876 			  osec = htab->etab.text_index_section;
   3877 			  indx = elf_section_data (osec)->dynindx;
   3878 			}
   3879 		      BFD_ASSERT (indx != 0);
   3880 
   3881 		      /* We are turning this relocation into one
   3882 			 against a section symbol, so subtract out the
   3883 			 output section's address but not the offset
   3884 			 of the input section in the output section.  */
   3885 		      outrel.r_addend -= osec->vma;
   3886 		    }
   3887 
   3888 		  outrel.r_info = ELF32_R_INFO (indx, r_type);
   3889 		}
   3890 	      sreloc = elf_section_data (input_section)->sreloc;
   3891 	      if (sreloc == NULL)
   3892 		abort ();
   3893 
   3894 	      loc = sreloc->contents;
   3895 	      loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
   3896 	      bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   3897 	    }
   3898 	  break;
   3899 
   3900 	case R_PARISC_TLS_LDM21L:
   3901 	case R_PARISC_TLS_LDM14R:
   3902 	  {
   3903 	    bfd_vma off;
   3904 
   3905 	    off = htab->tls_ldm_got.offset;
   3906 	    if (off & 1)
   3907 	      off &= ~1;
   3908 	    else
   3909 	      {
   3910 		Elf_Internal_Rela outrel;
   3911 		bfd_byte *loc;
   3912 
   3913 		outrel.r_offset = (off
   3914 				   + htab->etab.sgot->output_section->vma
   3915 				   + htab->etab.sgot->output_offset);
   3916 		outrel.r_addend = 0;
   3917 		outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
   3918 		loc = htab->etab.srelgot->contents;
   3919 		loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
   3920 
   3921 		bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   3922 		htab->tls_ldm_got.offset |= 1;
   3923 	      }
   3924 
   3925 	    /* Add the base of the GOT to the relocation value.  */
   3926 	    relocation = (off
   3927 			  + htab->etab.sgot->output_offset
   3928 			  + htab->etab.sgot->output_section->vma);
   3929 
   3930 	    break;
   3931 	  }
   3932 
   3933 	case R_PARISC_TLS_LDO21L:
   3934 	case R_PARISC_TLS_LDO14R:
   3935 	  relocation -= dtpoff_base (info);
   3936 	  break;
   3937 
   3938 	case R_PARISC_TLS_GD21L:
   3939 	case R_PARISC_TLS_GD14R:
   3940 	case R_PARISC_TLS_IE21L:
   3941 	case R_PARISC_TLS_IE14R:
   3942 	  {
   3943 	    bfd_vma off;
   3944 	    int indx;
   3945 	    char tls_type;
   3946 
   3947 	    indx = 0;
   3948 	    if (hh != NULL)
   3949 	      {
   3950 		if (!htab->etab.dynamic_sections_created
   3951 		    || hh->eh.dynindx == -1
   3952 		    || SYMBOL_REFERENCES_LOCAL (info, &hh->eh)
   3953 		    || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))
   3954 		  /* This is actually a static link, or it is a
   3955 		     -Bsymbolic link and the symbol is defined
   3956 		     locally, or the symbol was forced to be local
   3957 		     because of a version file.  */
   3958 		  ;
   3959 		else
   3960 		  indx = hh->eh.dynindx;
   3961 		off = hh->eh.got.offset;
   3962 		tls_type = hh->tls_type;
   3963 	      }
   3964 	    else
   3965 	      {
   3966 		off = local_got_offsets[r_symndx];
   3967 		tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
   3968 	      }
   3969 
   3970 	    if (tls_type == GOT_UNKNOWN)
   3971 	      abort ();
   3972 
   3973 	    if ((off & 1) != 0)
   3974 	      off &= ~1;
   3975 	    else
   3976 	      {
   3977 		bool need_relocs = false;
   3978 		Elf_Internal_Rela outrel;
   3979 		bfd_byte *loc = NULL;
   3980 		int cur_off = off;
   3981 
   3982 		/* The GOT entries have not been initialized yet.  Do it
   3983 		   now, and emit any relocations.  If both an IE GOT and a
   3984 		   GD GOT are necessary, we emit the GD first.  */
   3985 
   3986 		if (indx != 0
   3987 		    || (bfd_link_dll (info)
   3988 			&& (hh == NULL
   3989 			    || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))))
   3990 		  {
   3991 		    need_relocs = true;
   3992 		    loc = htab->etab.srelgot->contents;
   3993 		    loc += (htab->etab.srelgot->reloc_count
   3994 			    * sizeof (Elf32_External_Rela));
   3995 		  }
   3996 
   3997 		if (tls_type & GOT_TLS_GD)
   3998 		  {
   3999 		    if (need_relocs)
   4000 		      {
   4001 			outrel.r_offset
   4002 			  = (cur_off
   4003 			     + htab->etab.sgot->output_section->vma
   4004 			     + htab->etab.sgot->output_offset);
   4005 			outrel.r_info
   4006 			  = ELF32_R_INFO (indx, R_PARISC_TLS_DTPMOD32);
   4007 			outrel.r_addend = 0;
   4008 			bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   4009 			htab->etab.srelgot->reloc_count++;
   4010 			loc += sizeof (Elf32_External_Rela);
   4011 			bfd_put_32 (output_bfd, 0,
   4012 				    htab->etab.sgot->contents + cur_off);
   4013 		      }
   4014 		    else
   4015 		      /* If we are not emitting relocations for a
   4016 			 general dynamic reference, then we must be in a
   4017 			 static link or an executable link with the
   4018 			 symbol binding locally.  Mark it as belonging
   4019 			 to module 1, the executable.  */
   4020 		      bfd_put_32 (output_bfd, 1,
   4021 				  htab->etab.sgot->contents + cur_off);
   4022 
   4023 		    if (indx != 0)
   4024 		      {
   4025 			outrel.r_info
   4026 			  = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
   4027 			outrel.r_offset += 4;
   4028 			bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   4029 			htab->etab.srelgot->reloc_count++;
   4030 			loc += sizeof (Elf32_External_Rela);
   4031 			bfd_put_32 (output_bfd, 0,
   4032 				    htab->etab.sgot->contents + cur_off + 4);
   4033 		      }
   4034 		    else
   4035 		      bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
   4036 				  htab->etab.sgot->contents + cur_off + 4);
   4037 		    cur_off += 8;
   4038 		  }
   4039 
   4040 		if (tls_type & GOT_TLS_IE)
   4041 		  {
   4042 		    if (need_relocs
   4043 			&& !(bfd_link_executable (info)
   4044 			     && SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
   4045 		      {
   4046 			outrel.r_offset
   4047 			  = (cur_off
   4048 			     + htab->etab.sgot->output_section->vma
   4049 			     + htab->etab.sgot->output_offset);
   4050 			outrel.r_info = ELF32_R_INFO (indx,
   4051 						      R_PARISC_TLS_TPREL32);
   4052 			if (indx == 0)
   4053 			  outrel.r_addend = relocation - dtpoff_base (info);
   4054 			else
   4055 			  outrel.r_addend = 0;
   4056 			bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
   4057 			htab->etab.srelgot->reloc_count++;
   4058 			loc += sizeof (Elf32_External_Rela);
   4059 		      }
   4060 		    else
   4061 		      bfd_put_32 (output_bfd, tpoff (info, relocation),
   4062 				  htab->etab.sgot->contents + cur_off);
   4063 		    cur_off += 4;
   4064 		  }
   4065 
   4066 		if (hh != NULL)
   4067 		  hh->eh.got.offset |= 1;
   4068 		else
   4069 		  local_got_offsets[r_symndx] |= 1;
   4070 	      }
   4071 
   4072 	    if ((tls_type & GOT_NORMAL) != 0
   4073 		&& (tls_type & (GOT_TLS_GD | GOT_TLS_LDM | GOT_TLS_IE)) != 0)
   4074 	      {
   4075 		if (hh != NULL)
   4076 		  _bfd_error_handler (_("%s has both normal and TLS relocs"),
   4077 				      hh_name (hh));
   4078 		else
   4079 		  {
   4080 		    Elf_Internal_Sym *isym
   4081 		      = bfd_sym_from_r_symndx (&htab->etab.sym_cache,
   4082 					       input_bfd, r_symndx);
   4083 		    if (isym == NULL)
   4084 		      return false;
   4085 		    sym_name
   4086 		      = bfd_elf_string_from_elf_section (input_bfd,
   4087 							 symtab_hdr->sh_link,
   4088 							 isym->st_name);
   4089 		    if (sym_name == NULL)
   4090 		      return false;
   4091 		    if (*sym_name == '\0')
   4092 		      sym_name = bfd_section_name (sym_sec);
   4093 		    _bfd_error_handler
   4094 		      (_("%pB:%s has both normal and TLS relocs"),
   4095 		       input_bfd, sym_name);
   4096 		  }
   4097 		bfd_set_error (bfd_error_bad_value);
   4098 		return false;
   4099 	      }
   4100 
   4101 	    if ((tls_type & GOT_TLS_GD)
   4102 		&& r_type != R_PARISC_TLS_GD21L
   4103 		&& r_type != R_PARISC_TLS_GD14R)
   4104 	      off += 2 * GOT_ENTRY_SIZE;
   4105 
   4106 	    /* Add the base of the GOT to the relocation value.  */
   4107 	    relocation = (off
   4108 			  + htab->etab.sgot->output_offset
   4109 			  + htab->etab.sgot->output_section->vma);
   4110 
   4111 	    break;
   4112 	  }
   4113 
   4114 	case R_PARISC_TLS_LE21L:
   4115 	case R_PARISC_TLS_LE14R:
   4116 	  {
   4117 	    relocation = tpoff (info, relocation);
   4118 	    break;
   4119 	  }
   4120 	  break;
   4121 
   4122 	default:
   4123 	  break;
   4124 	}
   4125 
   4126       rstatus = final_link_relocate (input_section, contents, rela, relocation,
   4127 			       htab, sym_sec, hh, info);
   4128 
   4129       if (rstatus == bfd_reloc_ok)
   4130 	continue;
   4131 
   4132       if (hh != NULL)
   4133 	sym_name = hh_name (hh);
   4134       else
   4135 	{
   4136 	  sym_name = bfd_elf_string_from_elf_section (input_bfd,
   4137 						      symtab_hdr->sh_link,
   4138 						      sym->st_name);
   4139 	  if (sym_name == NULL)
   4140 	    return false;
   4141 	  if (*sym_name == '\0')
   4142 	    sym_name = bfd_section_name (sym_sec);
   4143 	}
   4144 
   4145       howto = elf_hppa_howto_table + r_type;
   4146 
   4147       if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
   4148 	{
   4149 	  if (rstatus == bfd_reloc_notsupported || !warned_undef)
   4150 	    {
   4151 	      _bfd_error_handler
   4152 		/* xgettext:c-format */
   4153 		(_("%pB(%pA+%#" PRIx64 "): cannot handle %s for %s"),
   4154 		 input_bfd,
   4155 		 input_section,
   4156 		 (uint64_t) rela->r_offset,
   4157 		 howto->name,
   4158 		 sym_name);
   4159 	      bfd_set_error (bfd_error_bad_value);
   4160 	      return false;
   4161 	    }
   4162 	}
   4163       else
   4164 	(*info->callbacks->reloc_overflow)
   4165 	  (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
   4166 	   (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
   4167     }
   4168 
   4169   return true;
   4170 }
   4171 
   4172 /* Finish up dynamic symbol handling.  We set the contents of various
   4173    dynamic sections here.  */
   4174 
   4175 static bool
   4176 elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
   4177 				  struct bfd_link_info *info,
   4178 				  struct elf_link_hash_entry *eh,
   4179 				  Elf_Internal_Sym *sym)
   4180 {
   4181   struct elf32_hppa_link_hash_table *htab;
   4182   Elf_Internal_Rela rela;
   4183   bfd_byte *loc;
   4184 
   4185   htab = hppa_link_hash_table (info);
   4186 
   4187   if (eh->plt.offset != (bfd_vma) -1)
   4188     {
   4189       bfd_vma value;
   4190 
   4191       if (eh->plt.offset & 1)
   4192 	abort ();
   4193 
   4194       /* This symbol has an entry in the procedure linkage table.  Set
   4195 	 it up.
   4196 
   4197 	 The format of a plt entry is
   4198 	 <funcaddr>
   4199 	 <__gp>
   4200       */
   4201       value = 0;
   4202       if (eh->root.type == bfd_link_hash_defined
   4203 	  || eh->root.type == bfd_link_hash_defweak)
   4204 	{
   4205 	  value = eh->root.u.def.value;
   4206 	  if (eh->root.u.def.section->output_section != NULL)
   4207 	    value += (eh->root.u.def.section->output_offset
   4208 		      + eh->root.u.def.section->output_section->vma);
   4209 	}
   4210 
   4211       /* Create a dynamic IPLT relocation for this entry.  */
   4212       rela.r_offset = (eh->plt.offset
   4213 		      + htab->etab.splt->output_offset
   4214 		      + htab->etab.splt->output_section->vma);
   4215       if (eh->dynindx != -1)
   4216 	{
   4217 	  rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
   4218 	  rela.r_addend = 0;
   4219 	}
   4220       else
   4221 	{
   4222 	  /* This symbol has been marked to become local, and is
   4223 	     used by a plabel so must be kept in the .plt.  */
   4224 	  rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
   4225 	  rela.r_addend = value;
   4226 	}
   4227 
   4228       loc = htab->etab.srelplt->contents;
   4229       loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
   4230       bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
   4231 
   4232       if (!eh->def_regular)
   4233 	{
   4234 	  /* Mark the symbol as undefined, rather than as defined in
   4235 	     the .plt section.  Leave the value alone.  */
   4236 	  sym->st_shndx = SHN_UNDEF;
   4237 	}
   4238     }
   4239 
   4240   if (eh->got.offset != (bfd_vma) -1
   4241       && (hppa_elf_hash_entry (eh)->tls_type & GOT_NORMAL) != 0
   4242       && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
   4243     {
   4244       bool is_dyn = (eh->dynindx != -1
   4245 		     && !SYMBOL_REFERENCES_LOCAL (info, eh));
   4246 
   4247       if (is_dyn || bfd_link_pic (info))
   4248 	{
   4249 	  /* This symbol has an entry in the global offset table.  Set
   4250 	     it up.  */
   4251 
   4252 	  rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
   4253 			   + htab->etab.sgot->output_offset
   4254 			   + htab->etab.sgot->output_section->vma);
   4255 
   4256 	  /* If this is a -Bsymbolic link and the symbol is defined
   4257 	     locally or was forced to be local because of a version
   4258 	     file, we just want to emit a RELATIVE reloc.  The entry
   4259 	     in the global offset table will already have been
   4260 	     initialized in the relocate_section function.  */
   4261 	  if (!is_dyn
   4262 	      && (eh->root.type == bfd_link_hash_defined
   4263 		  || eh->root.type == bfd_link_hash_defweak))
   4264 	    {
   4265 	      rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
   4266 	      rela.r_addend = (eh->root.u.def.value
   4267 			       + eh->root.u.def.section->output_offset
   4268 			       + eh->root.u.def.section->output_section->vma);
   4269 	    }
   4270 	  else
   4271 	    {
   4272 	      if ((eh->got.offset & 1) != 0)
   4273 		abort ();
   4274 
   4275 	      bfd_put_32 (output_bfd, 0,
   4276 			  htab->etab.sgot->contents + (eh->got.offset & ~1));
   4277 	      rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
   4278 	      rela.r_addend = 0;
   4279 	    }
   4280 
   4281 	  loc = htab->etab.srelgot->contents;
   4282 	  loc += (htab->etab.srelgot->reloc_count++
   4283 		  * sizeof (Elf32_External_Rela));
   4284 	  bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   4285 	}
   4286     }
   4287 
   4288   if (eh->needs_copy)
   4289     {
   4290       asection *sec;
   4291 
   4292       /* This symbol needs a copy reloc.  Set it up.  */
   4293 
   4294       if (! (eh->dynindx != -1
   4295 	     && (eh->root.type == bfd_link_hash_defined
   4296 		 || eh->root.type == bfd_link_hash_defweak)))
   4297 	abort ();
   4298 
   4299       rela.r_offset = (eh->root.u.def.value
   4300 		      + eh->root.u.def.section->output_offset
   4301 		      + eh->root.u.def.section->output_section->vma);
   4302       rela.r_addend = 0;
   4303       rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
   4304       if (eh->root.u.def.section == htab->etab.sdynrelro)
   4305 	sec = htab->etab.sreldynrelro;
   4306       else
   4307 	sec = htab->etab.srelbss;
   4308       loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
   4309       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
   4310     }
   4311 
   4312   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
   4313   if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
   4314     {
   4315       sym->st_shndx = SHN_ABS;
   4316     }
   4317 
   4318   return true;
   4319 }
   4320 
   4321 /* Used to decide how to sort relocs in an optimal manner for the
   4322    dynamic linker, before writing them out.  */
   4323 
   4324 static enum elf_reloc_type_class
   4325 elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
   4326 			     const asection *rel_sec ATTRIBUTE_UNUSED,
   4327 			     const Elf_Internal_Rela *rela)
   4328 {
   4329   /* Handle TLS relocs first; we don't want them to be marked
   4330      relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
   4331      check below.  */
   4332   switch ((int) ELF32_R_TYPE (rela->r_info))
   4333     {
   4334       case R_PARISC_TLS_DTPMOD32:
   4335       case R_PARISC_TLS_DTPOFF32:
   4336       case R_PARISC_TLS_TPREL32:
   4337 	return reloc_class_normal;
   4338     }
   4339 
   4340   if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
   4341     return reloc_class_relative;
   4342 
   4343   switch ((int) ELF32_R_TYPE (rela->r_info))
   4344     {
   4345     case R_PARISC_IPLT:
   4346       return reloc_class_plt;
   4347     case R_PARISC_COPY:
   4348       return reloc_class_copy;
   4349     default:
   4350       return reloc_class_normal;
   4351     }
   4352 }
   4353 
   4354 /* Finish up the dynamic sections.  */
   4355 
   4356 static bool
   4357 elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
   4358 				    struct bfd_link_info *info)
   4359 {
   4360   bfd *dynobj;
   4361   struct elf32_hppa_link_hash_table *htab;
   4362   asection *sdyn;
   4363   asection * sgot;
   4364 
   4365   htab = hppa_link_hash_table (info);
   4366   if (htab == NULL)
   4367     return false;
   4368 
   4369   dynobj = htab->etab.dynobj;
   4370 
   4371   sgot = htab->etab.sgot;
   4372   /* A broken linker script might have discarded the dynamic sections.
   4373      Catch this here so that we do not seg-fault later on.  */
   4374   if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
   4375     return false;
   4376 
   4377   sdyn = bfd_get_linker_section (dynobj, ".dynamic");
   4378 
   4379   if (htab->etab.dynamic_sections_created)
   4380     {
   4381       Elf32_External_Dyn *dyncon, *dynconend;
   4382 
   4383       if (sdyn == NULL)
   4384 	abort ();
   4385 
   4386       dyncon = (Elf32_External_Dyn *) sdyn->contents;
   4387       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
   4388       for (; dyncon < dynconend; dyncon++)
   4389 	{
   4390 	  Elf_Internal_Dyn dyn;
   4391 	  asection *s;
   4392 
   4393 	  bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
   4394 
   4395 	  switch (dyn.d_tag)
   4396 	    {
   4397 	    default:
   4398 	      continue;
   4399 
   4400 	    case DT_PLTGOT:
   4401 	      /* Use PLTGOT to set the GOT register.  */
   4402 	      dyn.d_un.d_ptr = elf_gp (output_bfd);
   4403 	      break;
   4404 
   4405 	    case DT_JMPREL:
   4406 	      s = htab->etab.srelplt;
   4407 	      dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
   4408 	      break;
   4409 
   4410 	    case DT_PLTRELSZ:
   4411 	      s = htab->etab.srelplt;
   4412 	      dyn.d_un.d_val = s->size;
   4413 	      break;
   4414 	    }
   4415 
   4416 	  bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
   4417 	}
   4418     }
   4419 
   4420   if (sgot != NULL && sgot->size != 0)
   4421     {
   4422       /* Fill in the first entry in the global offset table.
   4423 	 We use it to point to our dynamic section, if we have one.  */
   4424       bfd_put_32 (output_bfd,
   4425 		  sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
   4426 		  sgot->contents);
   4427 
   4428       /* The second entry is reserved for use by the dynamic linker.  */
   4429       memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
   4430 
   4431       /* Set .got entry size.  */
   4432       elf_section_data (sgot->output_section)
   4433 	->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
   4434     }
   4435 
   4436   if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
   4437     {
   4438       /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
   4439 	 plt stubs and as such the section does not hold a table of fixed-size
   4440 	 entries.  */
   4441       elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
   4442 
   4443       if (htab->need_plt_stub)
   4444 	{
   4445 	  /* Set up the .plt stub.  */
   4446 	  memcpy (htab->etab.splt->contents
   4447 		  + htab->etab.splt->size - sizeof (plt_stub),
   4448 		  plt_stub, sizeof (plt_stub));
   4449 
   4450 	  if ((htab->etab.splt->output_offset
   4451 	       + htab->etab.splt->output_section->vma
   4452 	       + htab->etab.splt->size)
   4453 	      != (sgot->output_offset
   4454 		  + sgot->output_section->vma))
   4455 	    {
   4456 	      _bfd_error_handler
   4457 		(_(".got section not immediately after .plt section"));
   4458 	      return false;
   4459 	    }
   4460 	}
   4461     }
   4462 
   4463   return true;
   4464 }
   4465 
   4466 /* Called when writing out an object file to decide the type of a
   4467    symbol.  */
   4468 static int
   4469 elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
   4470 {
   4471   if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
   4472     return STT_PARISC_MILLI;
   4473   else
   4474     return type;
   4475 }
   4476 
   4477 /* Misc BFD support code.  */
   4478 #define bfd_elf32_bfd_is_local_label_name    elf_hppa_is_local_label_name
   4479 #define bfd_elf32_bfd_reloc_type_lookup	     elf_hppa_reloc_type_lookup
   4480 #define bfd_elf32_bfd_reloc_name_lookup      elf_hppa_reloc_name_lookup
   4481 #define elf_info_to_howto		     elf_hppa_info_to_howto
   4482 #define elf_info_to_howto_rel		     elf_hppa_info_to_howto_rel
   4483 
   4484 /* Stuff for the BFD linker.  */
   4485 #define bfd_elf32_bfd_final_link	     elf32_hppa_final_link
   4486 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
   4487 #define elf_backend_adjust_dynamic_symbol    elf32_hppa_adjust_dynamic_symbol
   4488 #define elf_backend_copy_indirect_symbol     elf32_hppa_copy_indirect_symbol
   4489 #define elf_backend_check_relocs	     elf32_hppa_check_relocs
   4490 #define elf_backend_relocs_compatible	     _bfd_elf_relocs_compatible
   4491 #define elf_backend_create_dynamic_sections  elf32_hppa_create_dynamic_sections
   4492 #define elf_backend_fake_sections	     elf_hppa_fake_sections
   4493 #define elf_backend_relocate_section	     elf32_hppa_relocate_section
   4494 #define elf_backend_hide_symbol		     elf32_hppa_hide_symbol
   4495 #define elf_backend_finish_dynamic_symbol    elf32_hppa_finish_dynamic_symbol
   4496 #define elf_backend_finish_dynamic_sections  elf32_hppa_finish_dynamic_sections
   4497 #define elf_backend_late_size_sections	     elf32_hppa_late_size_sections
   4498 #define elf_backend_init_index_section	     _bfd_elf_init_1_index_section
   4499 #define elf_backend_gc_mark_hook	     elf32_hppa_gc_mark_hook
   4500 #define elf_backend_grok_prstatus	     elf32_hppa_grok_prstatus
   4501 #define elf_backend_grok_psinfo		     elf32_hppa_grok_psinfo
   4502 #define elf_backend_object_p		     elf32_hppa_object_p
   4503 #define elf_backend_final_write_processing   elf_hppa_final_write_processing
   4504 #define elf_backend_get_symbol_type	     elf32_hppa_elf_get_symbol_type
   4505 #define elf_backend_reloc_type_class	     elf32_hppa_reloc_type_class
   4506 #define elf_backend_action_discarded	     elf_hppa_action_discarded
   4507 
   4508 #define elf_backend_can_gc_sections	     1
   4509 #define elf_backend_can_refcount	     1
   4510 #define elf_backend_plt_alignment	     2
   4511 #define elf_backend_want_got_plt	     0
   4512 #define elf_backend_plt_readonly	     0
   4513 #define elf_backend_want_plt_sym	     0
   4514 #define elf_backend_got_header_size	     8
   4515 #define elf_backend_want_dynrelro	     1
   4516 #define elf_backend_rela_normal		     1
   4517 #define elf_backend_dtrel_excludes_plt	     1
   4518 #define elf_backend_no_page_alias	     1
   4519 
   4520 #define TARGET_BIG_SYM		hppa_elf32_vec
   4521 #define TARGET_BIG_NAME		"elf32-hppa"
   4522 #define ELF_ARCH		bfd_arch_hppa
   4523 #define ELF_TARGET_ID		HPPA32_ELF_DATA
   4524 #define ELF_MACHINE_CODE	EM_PARISC
   4525 #define ELF_MAXPAGESIZE		0x1000
   4526 #define ELF_OSABI		ELFOSABI_HPUX
   4527 #define elf32_bed		elf32_hppa_hpux_bed
   4528 
   4529 #include "elf32-target.h"
   4530 
   4531 #undef TARGET_BIG_SYM
   4532 #define TARGET_BIG_SYM		hppa_elf32_linux_vec
   4533 #undef TARGET_BIG_NAME
   4534 #define TARGET_BIG_NAME		"elf32-hppa-linux"
   4535 #undef ELF_OSABI
   4536 #define ELF_OSABI		ELFOSABI_GNU
   4537 #undef elf32_bed
   4538 #define elf32_bed		elf32_hppa_linux_bed
   4539 
   4540 #include "elf32-target.h"
   4541 
   4542 #undef TARGET_BIG_SYM
   4543 #define TARGET_BIG_SYM		hppa_elf32_nbsd_vec
   4544 #undef TARGET_BIG_NAME
   4545 #define TARGET_BIG_NAME		"elf32-hppa-netbsd"
   4546 #undef ELF_OSABI
   4547 #define ELF_OSABI		ELFOSABI_NETBSD
   4548 #undef elf32_bed
   4549 #define elf32_bed		elf32_hppa_netbsd_bed
   4550 
   4551 #include "elf32-target.h"
   4552