| 1 | /* BFD back-end for AIX on PS/2 core files. |
| 2 | This was based on trad-core.c, which was written by John Gilmore of |
| 3 | Cygnus Support. |
| 4 | Copyright (C) 1988-2017 Free Software Foundation, Inc. |
| 5 | Written by Minh Tran-Le <TRANLE@INTELLICORP.COM>. |
| 6 | Converted to back end form by Ian Lance Taylor <ian@cygnus.com>. |
| 7 | |
| 8 | This file is part of BFD, the Binary File Descriptor library. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program; if not, write to the Free Software |
| 22 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 23 | MA 02110-1301, USA. */ |
| 24 | |
| 25 | #include "sysdep.h" |
| 26 | #include "bfd.h" |
| 27 | #include "libbfd.h" |
| 28 | #include "coff/i386.h" |
| 29 | #include "coff/internal.h" |
| 30 | #include "libcoff.h" |
| 31 | |
| 32 | #include <signal.h> |
| 33 | |
| 34 | #if defined (_AIX) && defined (_I386) |
| 35 | #define NOCHECKS /* This is for coredump.h. */ |
| 36 | #define _h_USER /* Avoid including user.h from coredump.h. */ |
| 37 | #include <uinfo.h> |
| 38 | #include <sys/i386/coredump.h> |
| 39 | #endif /* _AIX && _I386 */ |
| 40 | |
| 41 | /* Maybe this could work on some other i386 but I have not tried it |
| 42 | * mtranle@paris - Tue Sep 24 12:49:35 1991 |
| 43 | */ |
| 44 | |
| 45 | #ifndef COR_MAGIC |
| 46 | # define COR_MAGIC "core" |
| 47 | #endif |
| 48 | |
| 49 | /* Need this cast because ptr is really void *. */ |
| 50 | #define core_hdr(bfd) \ |
| 51 | (((bfd->tdata.trad_core_data))->hdr) |
| 52 | #define core_section(bfd,n) \ |
| 53 | (((bfd)->tdata.trad_core_data)->sections[n]) |
| 54 | #define core_regsec(bfd) \ |
| 55 | (((bfd)->tdata.trad_core_data)->reg_section) |
| 56 | #define core_reg2sec(bfd) \ |
| 57 | (((bfd)->tdata.trad_core_data)->reg2_section) |
| 58 | |
| 59 | /* These are stored in the bfd's tdata. */ |
| 60 | struct trad_core_struct |
| 61 | { |
| 62 | struct corehdr *hdr; /* core file header */ |
| 63 | asection *reg_section; |
| 64 | asection *reg2_section; |
| 65 | asection *sections[MAX_CORE_SEGS]; |
| 66 | }; |
| 67 | |
| 68 | static const bfd_target * |
| 69 | aix386_core_file_p (bfd *abfd) |
| 70 | { |
| 71 | int i, n; |
| 72 | unsigned char longbuf[4]; /* Raw bytes of various header fields */ |
| 73 | bfd_size_type core_size = sizeof (struct corehdr); |
| 74 | bfd_size_type amt; |
| 75 | struct corehdr *core; |
| 76 | struct mergem |
| 77 | { |
| 78 | struct trad_core_struct coredata; |
| 79 | struct corehdr internal_core; |
| 80 | } *mergem; |
| 81 | flagword flags; |
| 82 | |
| 83 | amt = sizeof (longbuf); |
| 84 | if (bfd_bread (longbuf, amt, abfd) != amt) |
| 85 | { |
| 86 | if (bfd_get_error () != bfd_error_system_call) |
| 87 | bfd_set_error (bfd_error_wrong_format); |
| 88 | return 0; |
| 89 | } |
| 90 | |
| 91 | if (strncmp (longbuf, COR_MAGIC, 4)) |
| 92 | return 0; |
| 93 | |
| 94 | if (bfd_seek (abfd, (file_ptr) 0, 0) != 0) |
| 95 | return 0; |
| 96 | |
| 97 | amt = sizeof (struct mergem); |
| 98 | mergem = (struct mergem *) bfd_zalloc (abfd, amt); |
| 99 | if (mergem == NULL) |
| 100 | return 0; |
| 101 | |
| 102 | core = &mergem->internal_core; |
| 103 | |
| 104 | if ((bfd_bread (core, core_size, abfd)) != core_size) |
| 105 | { |
| 106 | if (bfd_get_error () != bfd_error_system_call) |
| 107 | bfd_set_error (bfd_error_wrong_format); |
| 108 | loser: |
| 109 | bfd_release (abfd, (char *) mergem); |
| 110 | abfd->tdata.any = NULL; |
| 111 | bfd_section_list_clear (abfd); |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | set_tdata (abfd, &mergem->coredata); |
| 116 | core_hdr (abfd) = core; |
| 117 | |
| 118 | /* Create the sections. */ |
| 119 | flags = SEC_HAS_CONTENTS; |
| 120 | core_regsec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg", |
| 121 | flags); |
| 122 | if (core_regsec (abfd) == NULL) |
| 123 | goto loser; |
| 124 | |
| 125 | core_regsec (abfd)->size = sizeof (core->cd_regs); |
| 126 | core_regsec (abfd)->vma = (bfd_vma) -1; |
| 127 | |
| 128 | /* We'll access the regs afresh in the core file, like any section. */ |
| 129 | core_regsec (abfd)->filepos = |
| 130 | (file_ptr) offsetof (struct corehdr, cd_regs[0]); |
| 131 | |
| 132 | flags = SEC_HAS_CONTENTS; |
| 133 | core_reg2sec (abfd) = bfd_make_section_anyway_with_flags (abfd, ".reg2", |
| 134 | flags); |
| 135 | if (core_reg2sec (abfd) == NULL) |
| 136 | /* bfd_release frees everything allocated after it's arg. */ |
| 137 | goto loser; |
| 138 | |
| 139 | core_reg2sec (abfd)->size = sizeof (core->cd_fpregs); |
| 140 | core_reg2sec (abfd)->vma = (bfd_vma) -1; |
| 141 | core_reg2sec (abfd)->filepos = |
| 142 | (file_ptr) offsetof (struct corehdr, cd_fpregs); |
| 143 | |
| 144 | for (i = 0, n = 0; (i < MAX_CORE_SEGS) && (core->cd_segs[i].cs_type); i++) |
| 145 | { |
| 146 | const char *sname; |
| 147 | flagword flags; |
| 148 | |
| 149 | if (core->cd_segs[i].cs_offset == 0) |
| 150 | continue; |
| 151 | |
| 152 | switch (core->cd_segs[i].cs_type) |
| 153 | { |
| 154 | case COR_TYPE_DATA: |
| 155 | sname = ".data"; |
| 156 | flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
| 157 | break; |
| 158 | case COR_TYPE_STACK: |
| 159 | sname = ".stack"; |
| 160 | flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS; |
| 161 | break; |
| 162 | case COR_TYPE_LIBDATA: |
| 163 | sname = ".libdata"; |
| 164 | flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 165 | break; |
| 166 | case COR_TYPE_WRITE: |
| 167 | sname = ".writeable"; |
| 168 | flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 169 | break; |
| 170 | case COR_TYPE_MSC: |
| 171 | sname = ".misc"; |
| 172 | flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 173 | break; |
| 174 | default: |
| 175 | sname = ".unknown"; |
| 176 | flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 177 | break; |
| 178 | } |
| 179 | core_section (abfd, n) = bfd_make_section_anyway_with_flags (abfd, |
| 180 | sname, |
| 181 | flags); |
| 182 | if (core_section (abfd, n) == NULL) |
| 183 | goto loser; |
| 184 | |
| 185 | core_section (abfd, n)->size = core->cd_segs[i].cs_len; |
| 186 | core_section (abfd, n)->vma = core->cd_segs[i].cs_address; |
| 187 | core_section (abfd, n)->filepos = core->cd_segs[i].cs_offset; |
| 188 | core_section (abfd, n)->alignment_power = 2; |
| 189 | n++; |
| 190 | } |
| 191 | |
| 192 | return abfd->xvec; |
| 193 | } |
| 194 | |
| 195 | static char * |
| 196 | aix386_core_file_failing_command (bfd *abfd) |
| 197 | { |
| 198 | return core_hdr (abfd)->cd_comm; |
| 199 | } |
| 200 | |
| 201 | static int |
| 202 | aix386_core_file_failing_signal (bfd *abfd) |
| 203 | { |
| 204 | return core_hdr (abfd)->cd_cursig; |
| 205 | } |
| 206 | |
| 207 | #define aix386_core_file_matches_executable_p generic_core_file_matches_executable_p |
| 208 | |
| 209 | #define aix386_core_file_pid _bfd_nocore_core_file_pid |
| 210 | |
| 211 | /* If somebody calls any byte-swapping routines, shoot them. */ |
| 212 | |
| 213 | static void |
| 214 | swap_abort (void) |
| 215 | { |
| 216 | /* This way doesn't require any declaration for ANSI to fuck up. */ |
| 217 | abort (); |
| 218 | } |
| 219 | |
| 220 | #define NO_GET ((bfd_vma (*) (const void *)) swap_abort) |
| 221 | #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort) |
| 222 | #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort) |
| 223 | #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort) |
| 224 | #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort) |
| 225 | #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort) |
| 226 | |
| 227 | const bfd_target core_aix386_vec = |
| 228 | { |
| 229 | "aix386-core", |
| 230 | bfd_target_unknown_flavour, |
| 231 | BFD_ENDIAN_BIG, /* target byte order */ |
| 232 | BFD_ENDIAN_BIG, /* target headers byte order */ |
| 233 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 234 | HAS_LINENO | HAS_DEBUG | |
| 235 | HAS_SYMS | HAS_LOCALS | WP_TEXT), |
| 236 | |
| 237 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 238 | 0, /* leading underscore */ |
| 239 | ' ', /* ar_pad_char */ |
| 240 | 16, /* ar_max_namelen */ |
| 241 | 0, /* match priority. */ |
| 242 | NO_GET64, NO_GETS64, NO_PUT64, |
| 243 | NO_GET, NO_GETS, NO_PUT, |
| 244 | NO_GET, NO_GETS, NO_PUT, /* data */ |
| 245 | NO_GET64, NO_GETS64, NO_PUT64, |
| 246 | NO_GET, NO_GETS, NO_PUT, |
| 247 | NO_GET, NO_GETS, NO_PUT, /* hdrs */ |
| 248 | |
| 249 | {_bfd_dummy_target, _bfd_dummy_target, |
| 250 | _bfd_dummy_target, aix386_core_file_p}, |
| 251 | {bfd_false, bfd_false, /* bfd_create_object */ |
| 252 | bfd_false, bfd_false}, |
| 253 | {bfd_false, bfd_false, /* bfd_write_contents */ |
| 254 | bfd_false, bfd_false}, |
| 255 | |
| 256 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
| 257 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 258 | BFD_JUMP_TABLE_CORE (aix386), |
| 259 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 260 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
| 261 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 262 | BFD_JUMP_TABLE_WRITE (_bfd_generic), |
| 263 | BFD_JUMP_TABLE_LINK (_bfd_nolink), |
| 264 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 265 | |
| 266 | NULL, |
| 267 | |
| 268 | NULL |
| 269 | }; |