| 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 1988, 1989, 1991, 1992, 1993 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 23 | |
| 24 | /* To use this file on a particular host, configure the host with these |
| 25 | parameters in the config/h-HOST file: |
| 26 | |
| 27 | HDEFINES=-DAIX386_CORE=1 |
| 28 | HDEPFILES=aix386-core.o |
| 29 | */ |
| 30 | |
| 31 | #include "bfd.h" |
| 32 | #include "sysdep.h" |
| 33 | #include "libbfd.h" |
| 34 | #include "obstack.h" |
| 35 | #include "coff/i386.h" |
| 36 | #include "coff/internal.h" |
| 37 | #include "libcoff.h" |
| 38 | |
| 39 | #include <stdio.h> |
| 40 | #include <stddef.h> |
| 41 | #include <signal.h> |
| 42 | |
| 43 | #include <errno.h> |
| 44 | |
| 45 | #if defined (_AIX) && defined (_I386) |
| 46 | #define NOCHECKS /* this is for coredump.h */ |
| 47 | #define _h_USER /* avoid including user.h from coredump.h */ |
| 48 | #include <uinfo.h> |
| 49 | #include <sys/i386/coredump.h> |
| 50 | #endif /* _AIX && _I386 */ |
| 51 | |
| 52 | /* maybe this could work on some other i386 but I have not tried it |
| 53 | * mtranle@paris - Tue Sep 24 12:49:35 1991 |
| 54 | */ |
| 55 | |
| 56 | #ifndef COR_MAGIC |
| 57 | # define COR_MAGIC "core" |
| 58 | #endif |
| 59 | |
| 60 | /* need this cast because ptr is really void * */ |
| 61 | #define core_hdr(bfd) \ |
| 62 | (((bfd->tdata.trad_core_data))->hdr) |
| 63 | #define core_section(bfd,n) \ |
| 64 | (((bfd)->tdata.trad_core_data)->sections[n]) |
| 65 | #define core_regsec(bfd) \ |
| 66 | (((bfd)->tdata.trad_core_data)->reg_section) |
| 67 | #define core_reg2sec(bfd) \ |
| 68 | (((bfd)->tdata.trad_core_data)->reg2_section) |
| 69 | |
| 70 | /* These are stored in the bfd's tdata */ |
| 71 | struct trad_core_struct { |
| 72 | struct corehdr *hdr; /* core file header */ |
| 73 | asection *reg_section; |
| 74 | asection *reg2_section; |
| 75 | asection *sections[MAX_CORE_SEGS]; |
| 76 | }; |
| 77 | |
| 78 | static bfd_target * |
| 79 | aix386_core_file_p (abfd) |
| 80 | bfd *abfd; |
| 81 | { |
| 82 | int i,n; |
| 83 | unsigned char longbuf[4]; /* Raw bytes of various header fields */ |
| 84 | int core_size = sizeof (struct corehdr); |
| 85 | struct corehdr *core; |
| 86 | struct mergem { |
| 87 | struct trad_core_struct coredata; |
| 88 | struct corehdr internal_core; |
| 89 | } *mergem; |
| 90 | |
| 91 | if (bfd_read ((PTR)longbuf, 1, sizeof (longbuf), abfd) != sizeof (longbuf)) |
| 92 | { |
| 93 | if (bfd_get_error () != bfd_error_system_call) |
| 94 | bfd_set_error (bfd_error_wrong_format); |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | if (strncmp(longbuf,COR_MAGIC,4)) return 0; |
| 99 | |
| 100 | if (bfd_seek (abfd, 0L, false) < 0) return 0; |
| 101 | |
| 102 | mergem = (struct mergem *)bfd_zalloc (abfd, sizeof (struct mergem)); |
| 103 | if (mergem == NULL) |
| 104 | { |
| 105 | bfd_set_error (bfd_error_no_memory); |
| 106 | return 0; |
| 107 | } |
| 108 | |
| 109 | core = &mergem->internal_core; |
| 110 | |
| 111 | if ((bfd_read ((PTR) core, 1, core_size, abfd)) != core_size) |
| 112 | { |
| 113 | if (bfd_get_error () != bfd_error_system_call) |
| 114 | bfd_set_error (bfd_error_wrong_format); |
| 115 | bfd_release (abfd, (char *)mergem); |
| 116 | return 0; |
| 117 | } |
| 118 | |
| 119 | set_tdata (abfd, &mergem->coredata); |
| 120 | core_hdr (abfd) = core; |
| 121 | |
| 122 | /* create the sections. This is raunchy, but bfd_close wants to reclaim |
| 123 | them */ |
| 124 | core_regsec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection)); |
| 125 | if (core_regsec (abfd) == NULL) |
| 126 | { |
| 127 | loser: |
| 128 | bfd_set_error (bfd_error_no_memory); |
| 129 | bfd_release (abfd, (char *)mergem); |
| 130 | return 0; |
| 131 | } |
| 132 | core_reg2sec (abfd) = (asection *) bfd_zalloc (abfd, sizeof (asection)); |
| 133 | if (core_reg2sec (abfd) == NULL) |
| 134 | { |
| 135 | loser1: |
| 136 | bfd_release (abfd, core_regsec (abfd)); |
| 137 | goto loser; |
| 138 | } |
| 139 | |
| 140 | for (i=0, n=0 ; (i < MAX_CORE_SEGS) && (core->cd_segs[i].cs_type) ; i++) |
| 141 | { |
| 142 | if (core->cd_segs[i].cs_offset == 0) |
| 143 | continue; |
| 144 | core_section (abfd,n) = |
| 145 | (asection *) bfd_zalloc (abfd, sizeof (asection)); |
| 146 | if (core_section (abfd,n) == NULL) |
| 147 | { |
| 148 | int j; |
| 149 | if (n > 0) |
| 150 | { |
| 151 | for (j=0; j < n; j++) |
| 152 | bfd_release (abfd, core_section(abfd, j)); |
| 153 | } |
| 154 | bfd_release (abfd, (char *)mergem); |
| 155 | goto loser1; |
| 156 | } |
| 157 | |
| 158 | switch (core->cd_segs[i].cs_type) |
| 159 | { |
| 160 | case COR_TYPE_DATA: |
| 161 | core_section (abfd, n)->name = ".data"; |
| 162 | core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD + |
| 163 | SEC_HAS_CONTENTS); |
| 164 | break; |
| 165 | case COR_TYPE_STACK: |
| 166 | core_section (abfd, n)->name = ".stack"; |
| 167 | core_section (abfd, n)->flags = (SEC_ALLOC + SEC_LOAD + |
| 168 | SEC_HAS_CONTENTS); |
| 169 | break; |
| 170 | case COR_TYPE_LIBDATA: |
| 171 | core_section (abfd, n)->name = ".libdata"; |
| 172 | core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS); |
| 173 | break; |
| 174 | case COR_TYPE_WRITE: |
| 175 | core_section (abfd, n)->name = ".writeable"; |
| 176 | core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS); |
| 177 | break; |
| 178 | case COR_TYPE_MSC: |
| 179 | core_section (abfd, n)->name = ".misc"; |
| 180 | core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS); |
| 181 | break; |
| 182 | default: |
| 183 | core_section (abfd, n)->name = ".unknown"; |
| 184 | core_section (abfd, n)->flags = (SEC_ALLOC + SEC_HAS_CONTENTS); |
| 185 | break; |
| 186 | } |
| 187 | core_section (abfd, n)->_raw_size = core->cd_segs[i].cs_len; |
| 188 | core_section (abfd, n)->vma = core->cd_segs[i].cs_address; |
| 189 | core_section (abfd, n)->filepos = core->cd_segs[i].cs_offset; |
| 190 | core_section (abfd, n)->alignment_power = 2; |
| 191 | core_section (abfd, n)->next = NULL; |
| 192 | if (n > 0) |
| 193 | core_section (abfd, (n-1))->next = core_section (abfd, n); |
| 194 | |
| 195 | abfd->section_count = ++n; |
| 196 | } |
| 197 | |
| 198 | core_regsec (abfd)->name = ".reg"; |
| 199 | core_reg2sec (abfd)->name = ".reg2"; |
| 200 | |
| 201 | core_regsec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 202 | core_reg2sec (abfd)->flags = SEC_ALLOC + SEC_HAS_CONTENTS; |
| 203 | |
| 204 | core_regsec (abfd)->_raw_size = sizeof(core->cd_regs); |
| 205 | core_reg2sec (abfd)->_raw_size = sizeof(core->cd_fpregs); |
| 206 | |
| 207 | core_regsec (abfd)->vma = -1; |
| 208 | core_reg2sec (abfd)->vma = -1; |
| 209 | |
| 210 | /* We'll access the regs afresh in the core file, like any section: */ |
| 211 | core_regsec (abfd)->filepos = (file_ptr)offsetof(struct corehdr,cd_regs[0]); |
| 212 | core_reg2sec (abfd)->filepos = (file_ptr)offsetof(struct corehdr, |
| 213 | cd_fpregs); |
| 214 | |
| 215 | /* add the 2 reg fake sections to abfd */ |
| 216 | abfd->section_count += 2; |
| 217 | abfd->sections = core_regsec (abfd); |
| 218 | core_regsec (abfd)->next = core_reg2sec (abfd); |
| 219 | core_reg2sec (abfd)->next = core_section (abfd, 0); |
| 220 | |
| 221 | return abfd->xvec; |
| 222 | } |
| 223 | |
| 224 | static char * |
| 225 | aix386_core_file_failing_command (abfd) |
| 226 | bfd *abfd; |
| 227 | { |
| 228 | return core_hdr (abfd)->cd_comm; |
| 229 | } |
| 230 | |
| 231 | static int |
| 232 | aix386_core_file_failing_signal (abfd) |
| 233 | bfd *abfd; |
| 234 | { |
| 235 | return core_hdr (abfd)->cd_cursig; |
| 236 | } |
| 237 | |
| 238 | static boolean |
| 239 | aix386_core_file_matches_executable_p (core_bfd, exec_bfd) |
| 240 | bfd *core_bfd; |
| 241 | bfd *exec_bfd; |
| 242 | { |
| 243 | return true; /* FIXME, We have no way of telling at this |
| 244 | point */ |
| 245 | } |
| 246 | |
| 247 | /* If somebody calls any byte-swapping routines, shoot them. */ |
| 248 | void |
| 249 | swap_abort() |
| 250 | { |
| 251 | abort(); /* This way doesn't require any declaration for ANSI to fuck up */ |
| 252 | } |
| 253 | #define NO_GET ((PROTO(bfd_vma, (*), ( const bfd_byte *))) swap_abort ) |
| 254 | #define NO_GETS ((PROTO(bfd_signed_vma, (*), (const bfd_byte *))) swap_abort ) |
| 255 | #define NO_PUT ((PROTO(void, (*), (bfd_vma, bfd_byte *))) swap_abort ) |
| 256 | |
| 257 | bfd_target aix386_core_vec = |
| 258 | { |
| 259 | "aix386-core", |
| 260 | bfd_target_unknown_flavour, |
| 261 | true, /* target byte order */ |
| 262 | true, /* target headers byte order */ |
| 263 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 264 | HAS_LINENO | HAS_DEBUG | |
| 265 | HAS_SYMS | HAS_LOCALS | WP_TEXT), |
| 266 | |
| 267 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 268 | 0, /* leading underscore */ |
| 269 | ' ', /* ar_pad_char */ |
| 270 | 16, /* ar_max_namelen */ |
| 271 | 3, /* minimum alignment power */ |
| 272 | NO_GET, NO_GETS, NO_PUT, |
| 273 | NO_GET, NO_GETS, NO_PUT, |
| 274 | NO_GET, NO_GETS, NO_PUT, /* data */ |
| 275 | NO_GET, NO_GETS, NO_PUT, |
| 276 | NO_GET, NO_GETS, NO_PUT, |
| 277 | NO_GET, NO_GETS, NO_PUT, /* hdrs */ |
| 278 | |
| 279 | {_bfd_dummy_target, _bfd_dummy_target, |
| 280 | _bfd_dummy_target, aix386_core_file_p}, |
| 281 | {bfd_false, bfd_false, /* bfd_create_object */ |
| 282 | bfd_false, bfd_false}, |
| 283 | {bfd_false, bfd_false, /* bfd_write_contents */ |
| 284 | bfd_false, bfd_false}, |
| 285 | |
| 286 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
| 287 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 288 | BFD_JUMP_TABLE_CORE (aix386), |
| 289 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 290 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
| 291 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 292 | BFD_JUMP_TABLE_WRITE (_bfd_generic), |
| 293 | BFD_JUMP_TABLE_LINK (_bfd_nolink), |
| 294 | |
| 295 | (PTR) 0 |
| 296 | }; |