| 1 | /* BFD back-end for HPPA BSD core files. |
| 2 | Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 "bfd.h" |
| 37 | #include "sysdep.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 | static asection *make_bfd_asection |
| 52 | PARAMS ((bfd *, const char *, flagword, bfd_size_type, file_ptr, |
| 53 | unsigned int)); |
| 54 | static const bfd_target *hppabsd_core_core_file_p |
| 55 | PARAMS ((bfd *)); |
| 56 | static char *hppabsd_core_core_file_failing_command |
| 57 | PARAMS ((bfd *)); |
| 58 | static int hppabsd_core_core_file_failing_signal |
| 59 | PARAMS ((bfd *)); |
| 60 | static bfd_boolean hppabsd_core_core_file_matches_executable_p |
| 61 | PARAMS ((bfd *, bfd *)); |
| 62 | static void swap_abort |
| 63 | PARAMS ((void)); |
| 64 | |
| 65 | /* These are stored in the bfd's tdata. */ |
| 66 | |
| 67 | struct hppabsd_core_struct |
| 68 | { |
| 69 | int sig; |
| 70 | char cmd[MAXCOMLEN + 1]; |
| 71 | asection *data_section; |
| 72 | asection *stack_section; |
| 73 | asection *reg_section; |
| 74 | }; |
| 75 | |
| 76 | #define core_hdr(bfd) ((bfd)->tdata.hppabsd_core_data) |
| 77 | #define core_signal(bfd) (core_hdr(bfd)->sig) |
| 78 | #define core_command(bfd) (core_hdr(bfd)->cmd) |
| 79 | #define core_datasec(bfd) (core_hdr(bfd)->data_section) |
| 80 | #define core_stacksec(bfd) (core_hdr(bfd)->stack_section) |
| 81 | #define core_regsec(bfd) (core_hdr(bfd)->reg_section) |
| 82 | |
| 83 | static asection * |
| 84 | make_bfd_asection (abfd, name, flags, _raw_size, offset, alignment_power) |
| 85 | bfd *abfd; |
| 86 | const char *name; |
| 87 | flagword flags; |
| 88 | bfd_size_type _raw_size; |
| 89 | file_ptr offset; |
| 90 | unsigned int alignment_power; |
| 91 | { |
| 92 | asection *asect; |
| 93 | |
| 94 | asect = bfd_make_section (abfd, name); |
| 95 | if (!asect) |
| 96 | return NULL; |
| 97 | |
| 98 | asect->flags = flags; |
| 99 | asect->_raw_size = _raw_size; |
| 100 | asect->filepos = offset; |
| 101 | asect->alignment_power = alignment_power; |
| 102 | |
| 103 | return asect; |
| 104 | } |
| 105 | |
| 106 | static const bfd_target * |
| 107 | hppabsd_core_core_file_p (abfd) |
| 108 | bfd *abfd; |
| 109 | { |
| 110 | int val; |
| 111 | struct user u; |
| 112 | struct hppabsd_core_struct *coredata; |
| 113 | int clicksz; |
| 114 | |
| 115 | /* Try to read in the u-area. We will need information from this |
| 116 | to know how to grok the rest of the core structures. */ |
| 117 | val = bfd_bread ((void *) &u, (bfd_size_type) sizeof u, abfd); |
| 118 | if (val != sizeof u) |
| 119 | { |
| 120 | if (bfd_get_error () != bfd_error_system_call) |
| 121 | bfd_set_error (bfd_error_wrong_format); |
| 122 | return NULL; |
| 123 | } |
| 124 | |
| 125 | /* Get the page size out of the u structure. This will be different |
| 126 | for PA 1.0 machines and PA 1.1 machines. Yuk! */ |
| 127 | clicksz = u.u_pcb.pcb_pgsz; |
| 128 | |
| 129 | /* clicksz must be a power of two >= 2k. */ |
| 130 | if (clicksz < 0x800 |
| 131 | || clicksz != (clicksz & -clicksz)) |
| 132 | { |
| 133 | bfd_set_error (bfd_error_wrong_format); |
| 134 | return NULL; |
| 135 | } |
| 136 | |
| 137 | /* Sanity checks. Make sure the size of the core file matches the |
| 138 | the size computed from information within the core itself. */ |
| 139 | { |
| 140 | FILE *stream = bfd_cache_lookup (abfd); |
| 141 | struct stat statbuf; |
| 142 | if (stream == NULL || fstat (fileno (stream), &statbuf) < 0) |
| 143 | { |
| 144 | bfd_set_error (bfd_error_system_call); |
| 145 | return NULL; |
| 146 | } |
| 147 | if (NBPG * (UPAGES + u.u_dsize + u.u_ssize) > statbuf.st_size) |
| 148 | { |
| 149 | bfd_set_error (bfd_error_file_truncated); |
| 150 | return NULL; |
| 151 | } |
| 152 | if (clicksz * (UPAGES + u.u_dsize + u.u_ssize) < statbuf.st_size) |
| 153 | { |
| 154 | /* The file is too big. Maybe it's not a core file |
| 155 | or we otherwise have bad values for u_dsize and u_ssize). */ |
| 156 | bfd_set_error (bfd_error_wrong_format); |
| 157 | return NULL; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | /* OK, we believe you. You're a core file (sure, sure). */ |
| 162 | |
| 163 | coredata = (struct hppabsd_core_struct *) |
| 164 | bfd_zalloc (abfd, (bfd_size_type) sizeof (struct hppabsd_core_struct)); |
| 165 | if (!coredata) |
| 166 | return NULL; |
| 167 | |
| 168 | /* Make the core data and available via the tdata part of the BFD. */ |
| 169 | abfd->tdata.hppabsd_core_data = coredata; |
| 170 | |
| 171 | /* Create the sections. */ |
| 172 | core_stacksec (abfd) = make_bfd_asection (abfd, ".stack", |
| 173 | SEC_ALLOC + SEC_HAS_CONTENTS, |
| 174 | clicksz * u.u_ssize, |
| 175 | NBPG * (USIZE + KSTAKSIZE) |
| 176 | + clicksz * u.u_dsize, 2); |
| 177 | if (core_stacksec (abfd) == NULL) |
| 178 | goto fail; |
| 179 | core_stacksec (abfd)->vma = USRSTACK; |
| 180 | |
| 181 | core_datasec (abfd) = make_bfd_asection (abfd, ".data", |
| 182 | SEC_ALLOC + SEC_LOAD |
| 183 | + SEC_HAS_CONTENTS, |
| 184 | clicksz * u.u_dsize, |
| 185 | NBPG * (USIZE + KSTAKSIZE), 2); |
| 186 | if (core_datasec (abfd) == NULL) |
| 187 | goto fail; |
| 188 | core_datasec (abfd)->vma = UDATASEG; |
| 189 | |
| 190 | core_regsec (abfd) = make_bfd_asection (abfd, ".reg", |
| 191 | SEC_HAS_CONTENTS, |
| 192 | KSTAKSIZE * NBPG, |
| 193 | NBPG * USIZE, 2); |
| 194 | if (core_regsec (abfd) == NULL) |
| 195 | goto fail; |
| 196 | core_regsec (abfd)->vma = 0; |
| 197 | |
| 198 | strncpy (core_command (abfd), u.u_comm, MAXCOMLEN + 1); |
| 199 | core_signal (abfd) = u.u_code; |
| 200 | return abfd->xvec; |
| 201 | |
| 202 | fail: |
| 203 | bfd_release (abfd, abfd->tdata.any); |
| 204 | abfd->tdata.any = NULL; |
| 205 | bfd_section_list_clear (abfd); |
| 206 | return NULL; |
| 207 | } |
| 208 | |
| 209 | static char * |
| 210 | hppabsd_core_core_file_failing_command (abfd) |
| 211 | bfd *abfd; |
| 212 | { |
| 213 | return core_command (abfd); |
| 214 | } |
| 215 | |
| 216 | static int |
| 217 | hppabsd_core_core_file_failing_signal (abfd) |
| 218 | bfd *abfd; |
| 219 | { |
| 220 | return core_signal (abfd); |
| 221 | } |
| 222 | |
| 223 | static bfd_boolean |
| 224 | hppabsd_core_core_file_matches_executable_p (core_bfd, exec_bfd) |
| 225 | bfd *core_bfd, *exec_bfd; |
| 226 | { |
| 227 | /* There's no way to know this... */ |
| 228 | return TRUE; |
| 229 | } |
| 230 | \f |
| 231 | /* If somebody calls any byte-swapping routines, shoot them. */ |
| 232 | static void |
| 233 | swap_abort () |
| 234 | { |
| 235 | /* This way doesn't require any declaration for ANSI to fuck up. */ |
| 236 | abort (); |
| 237 | } |
| 238 | |
| 239 | #define NO_GET ((bfd_vma (*) PARAMS (( const bfd_byte *))) swap_abort ) |
| 240 | #define NO_PUT ((void (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort ) |
| 241 | #define NO_SIGNED_GET \ |
| 242 | ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort ) |
| 243 | |
| 244 | const bfd_target hppabsd_core_vec = |
| 245 | { |
| 246 | "hppabsd-core", |
| 247 | bfd_target_unknown_flavour, |
| 248 | BFD_ENDIAN_BIG, /* target byte order */ |
| 249 | BFD_ENDIAN_BIG, /* target headers byte order */ |
| 250 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 251 | HAS_LINENO | HAS_DEBUG | |
| 252 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 253 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ |
| 254 | 0, /* symbol prefix */ |
| 255 | ' ', /* ar_pad_char */ |
| 256 | 16, /* ar_max_namelen */ |
| 257 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit data */ |
| 258 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit data */ |
| 259 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit data */ |
| 260 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 64 bit hdrs */ |
| 261 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 32 bit hdrs */ |
| 262 | NO_GET, NO_SIGNED_GET, NO_PUT, /* 16 bit hdrs */ |
| 263 | |
| 264 | { /* bfd_check_format */ |
| 265 | _bfd_dummy_target, /* unknown format */ |
| 266 | _bfd_dummy_target, /* object file */ |
| 267 | _bfd_dummy_target, /* archive */ |
| 268 | hppabsd_core_core_file_p /* a core file */ |
| 269 | }, |
| 270 | { /* bfd_set_format */ |
| 271 | bfd_false, bfd_false, |
| 272 | bfd_false, bfd_false |
| 273 | }, |
| 274 | { /* bfd_write_contents */ |
| 275 | bfd_false, bfd_false, |
| 276 | bfd_false, bfd_false |
| 277 | }, |
| 278 | |
| 279 | BFD_JUMP_TABLE_GENERIC (_bfd_generic), |
| 280 | BFD_JUMP_TABLE_COPY (_bfd_generic), |
| 281 | BFD_JUMP_TABLE_CORE (hppabsd_core), |
| 282 | BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive), |
| 283 | BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols), |
| 284 | BFD_JUMP_TABLE_RELOCS (_bfd_norelocs), |
| 285 | BFD_JUMP_TABLE_WRITE (_bfd_generic), |
| 286 | BFD_JUMP_TABLE_LINK (_bfd_nolink), |
| 287 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 288 | |
| 289 | NULL, |
| 290 | |
| 291 | (PTR) 0 /* backend_data */ |
| 292 | }; |
| 293 | #endif |