1 /* BFD back-end for HPPA BSD core files. 2 Copyright (C) 1993-2024 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19 MA 02110-1301, USA. 20 21 Written by the Center for Software Science at the University of Utah 22 and by Cygnus Support. 23 24 The core file structure for the Utah 4.3BSD and OSF1 ports on the 25 PA is a mix between traditional cores and hpux cores -- just 26 different enough that supporting this format would tend to add 27 gross hacks to trad-core.c or hpux-core.c. So instead we keep any 28 gross hacks isolated to this file. */ 29 30 /* This file can only be compiled on systems which use HPPA-BSD style 31 core files. 32 33 I would not expect this to be of use to any other host/target, but 34 you never know. */ 35 36 #include "sysdep.h" 37 #include "bfd.h" 38 #include "libbfd.h" 39 40 #if defined (HOST_HPPABSD) 41 42 #include "machine/vmparam.h" 43 44 #include <sys/param.h> 45 #include <sys/dir.h> 46 #include <signal.h> 47 #include <machine/reg.h> 48 #include <sys/user.h> /* After a.out.h */ 49 #include <sys/file.h> 50 51 #define hppabsd_core_core_file_matches_executable_p generic_core_file_matches_executable_p 52 #define hppabsd_core_core_file_pid _bfd_nocore_core_file_pid 53 54 /* These are stored in the bfd's tdata. */ 55 56 struct hppabsd_core_struct 57 { 58 int sig; 59 char cmd[MAXCOMLEN + 1]; 60 asection *data_section; 61 asection *stack_section; 62 asection *reg_section; 63 }; 64 65 #define core_hdr(bfd) ((bfd)->tdata.hppabsd_core_data) 66 #define core_signal(bfd) (core_hdr(bfd)->sig) 67 #define core_command(bfd) (core_hdr(bfd)->cmd) 68 #define core_datasec(bfd) (core_hdr(bfd)->data_section) 69 #define core_stacksec(bfd) (core_hdr(bfd)->stack_section) 70 #define core_regsec(bfd) (core_hdr(bfd)->reg_section) 71 72 static asection * 73 make_bfd_asection (bfd *abfd, 74 const char *name, 75 flagword flags, 76 bfd_size_type size, 77 file_ptr offset, 78 unsigned int alignment_power) 79 { 80 asection *asect; 81 82 asect = bfd_make_section_with_flags (abfd, name, flags); 83 if (!asect) 84 return NULL; 85 86 asect->size = size; 87 asect->filepos = offset; 88 asect->alignment_power = alignment_power; 89 90 return asect; 91 } 92 93 static bfd_cleanup 94 hppabsd_core_core_file_p (bfd *abfd) 95 { 96 int val; 97 struct user u; 98 struct hppabsd_core_struct *coredata; 99 int clicksz; 100 101 /* Try to read in the u-area. We will need information from this 102 to know how to grok the rest of the core structures. */ 103 val = bfd_read (&u, sizeof u, abfd); 104 if (val != sizeof u) 105 { 106 if (bfd_get_error () != bfd_error_system_call) 107 bfd_set_error (bfd_error_wrong_format); 108 return NULL; 109 } 110 111 /* Get the page size out of the u structure. This will be different 112 for PA 1.0 machines and PA 1.1 machines. Yuk! */ 113 clicksz = u.u_pcb.pcb_pgsz; 114 115 /* clicksz must be a power of two >= 2k. */ 116 if (clicksz < 0x800 117 || clicksz != (clicksz & -clicksz)) 118 { 119 bfd_set_error (bfd_error_wrong_format); 120 return NULL; 121 } 122 123 /* Sanity checks. Make sure the size of the core file matches the 124 the size computed from information within the core itself. */ 125 { 126 struct stat statbuf; 127 128 if (bfd_stat (abfd, &statbuf) < 0) 129 return NULL; 130 131 if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size) 132 { 133 bfd_set_error (bfd_error_file_truncated); 134 return NULL; 135 } 136 if (clicksz * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size) 137 { 138 /* The file is too big. Maybe it's not a core file 139 or we otherwise have bad values for u_dsize and u_ssize). */ 140 bfd_set_error (bfd_error_wrong_format); 141 return NULL; 142 } 143 } 144 145 /* OK, we believe you. You're a core file (sure, sure). */ 146 147 coredata = (struct hppabsd_core_struct *) 148 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct hppabsd_core_struct)); 149 if (!coredata) 150 return NULL; 151 152 /* Make the core data and available via the tdata part of the BFD. */ 153 abfd->tdata.hppabsd_core_data = coredata; 154 155 /* Create the sections. */ 156 core_stacksec (abfd) = make_bfd_asection (abfd, ".stack", 157 SEC_ALLOC + SEC_HAS_CONTENTS, 158 clicksz * u.u_ssize, 159 NBPG * (USIZE + KSTAKSIZE) 160 + clicksz * u.u_dsize, 2); 161 if (core_stacksec (abfd) == NULL) 162 goto fail; 163 core_stacksec (abfd)->vma = USRSTACK; 164 165 core_datasec (abfd) = make_bfd_asection (abfd, ".data", 166 SEC_ALLOC + SEC_LOAD 167 + SEC_HAS_CONTENTS, 168 clicksz * u.u_dsize, 169 NBPG * (USIZE + KSTAKSIZE), 2); 170 if (core_datasec (abfd) == NULL) 171 goto fail; 172 core_datasec (abfd)->vma = UDATASEG; 173 174 core_regsec (abfd) = make_bfd_asection (abfd, ".reg", 175 SEC_HAS_CONTENTS, 176 KSTAKSIZE * NBPG, 177 NBPG * USIZE, 2); 178 if (core_regsec (abfd) == NULL) 179 goto fail; 180 core_regsec (abfd)->vma = 0; 181 182 strncpy (core_command (abfd), u.u_comm, MAXCOMLEN); 183 core_command (abfd)[MAXCOMLEN] = 0; 184 core_signal (abfd) = u.u_code; 185 return _bfd_no_cleanup; 186 187 fail: 188 bfd_release (abfd, abfd->tdata.any); 189 abfd->tdata.any = NULL; 190 bfd_section_list_clear (abfd); 191 return NULL; 192 } 193 194 static char * 195 hppabsd_core_core_file_failing_command (bfd *abfd) 196 { 197 return core_command (abfd); 198 } 199 200 static int 201 hppabsd_core_core_file_failing_signal (bfd *abfd) 202 { 203 return core_signal (abfd); 204 } 205 206 /* If somebody calls any byte-swapping routines, shoot them. */ 208 static void 209 swap_abort (void) 210 { 211 /* This way doesn't require any declaration for ANSI to fuck up. */ 212 abort (); 213 } 214 215 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) 216 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) 217 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) 218 #define NO_GET64 ((uint64_t (*) (const void *)) swap_abort) 219 #define NO_PUT64 ((void (*) (uint64_t, void *)) swap_abort) 220 #define NO_GETS64 ((int64_t (*) (const void *)) swap_abort) 221 222 const bfd_target core_hppabsd_vec = 223 { 224 "hppabsd-core", 225 bfd_target_unknown_flavour, 226 BFD_ENDIAN_BIG, /* target byte order */ 227 BFD_ENDIAN_BIG, /* target headers byte order */ 228 (HAS_RELOC | EXEC_P | /* object flags */ 229 HAS_LINENO | HAS_DEBUG | 230 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 231 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ 232 0, /* symbol prefix */ 233 ' ', /* ar_pad_char */ 234 16, /* ar_max_namelen */ 235 TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */ 236 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */ 237 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */ 238 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */ 239 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */ 240 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */ 241 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */ 242 243 { /* bfd_check_format */ 244 _bfd_dummy_target, /* unknown format */ 245 _bfd_dummy_target, /* object file */ 246 _bfd_dummy_target, /* archive */ 247 hppabsd_core_core_file_p /* a core file */ 248 }, 249 { /* bfd_set_format */ 250 _bfd_bool_bfd_false_error, 251 _bfd_bool_bfd_false_error, 252 _bfd_bool_bfd_false_error, 253 _bfd_bool_bfd_false_error 254 }, 255 { /* bfd_write_contents */ 256 _bfd_bool_bfd_false_error, 257 _bfd_bool_bfd_false_error, 258 _bfd_bool_bfd_false_error, 259 _bfd_bool_bfd_false_error 260 }, 261 262 BFD_JUMP_TABLE_GENERIC (_bfd_generic), 263 BFD_JUMP_TABLE_COPY (_bfd_generic), 264 BFD_JUMP_TABLE_CORE (hppabsd_core), 265 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), 266 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), 267 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), 268 BFD_JUMP_TABLE_WRITE (_bfd_generic), 269 BFD_JUMP_TABLE_LINK (_bfd_nolink), 270 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 271 272 NULL, 273 274 NULL /* backend_data */ 275 }; 276 #endif 277
Indexes created Sun Mar 01 05:31:48 UTC 2026