bfd/hpux-core.c

   1 /* BFD back-end for HP/UX core files.
   2    Copyright 1993 Free Software Foundation, Inc.
   3    Written by Stu Grossman, Cygnus Support.
   4    Converted to back-end form by Ian Lance Taylor, Cygnus SUpport
   5
   6 This file is part of BFD, the Binary File Descriptor library.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 /* This file can only be compiled on systems which use HP/UX style
  23    core files.  In the config/XXXXXX.mh file for such a system add
  24       HDEFINES=-DHPUX_CORE
  25       HDEPFILES=hpux-core.o
  26    */
  27
  28 #include "bfd.h"
  29 #include "sysdep.h"
  30 #include "libbfd.h"
  31
  32 #if defined (HOST_HPPAHPUX) || defined (HOST_HP300HPUX)
  33
  34 /* FIXME: sys/core.h doesn't exist for HPUX version 7.  HPUX version
  35    5, 6, and 7 core files seem to be standard trad-core.c type core
  36    files; can we just use trad-core.c in addition to this file?  */
  37
  38 #include <sys/core.h>
  39 #include <sys/utsname.h>
  40
  41 #endif /* HOST_HPPAHPUX */
  42
  43 #ifdef HOST_HPPABSD
  44
  45 /* Not a very swift place to put it, but that's where the BSD port
  46    puts them.  */
  47 #include "/hpux/usr/include/sys/core.h"
  48
  49 #endif /* HOST_HPPABSD */
  50
  51 #include <stdio.h>
  52 #include <sys/types.h>
  53 #include <sys/param.h>
  54 #include <sys/dir.h>
  55 #include <signal.h>
  56 #include <machine/reg.h>
  57 #include <sys/user.h>           /* After a.out.h  */
  58 #include <sys/file.h>
  59 #include <errno.h>
  60
  61 /* These are stored in the bfd's tdata */
  62
  63 struct hpux_core_struct
  64 {
  65   int sig;
  66   char cmd[MAXCOMLEN + 1];
  67   asection *data_section;
  68   asection *stack_section;
  69   asection *reg_section;
  70 };
  71
  72 #define core_hdr(bfd) ((bfd)->tdata.hpux_core_data)
  73 #define core_signal(bfd) (core_hdr(bfd)->sig)
  74 #define core_command(bfd) (core_hdr(bfd)->cmd)
  75 #define core_datasec(bfd) (core_hdr(bfd)->data_section)
  76 #define core_stacksec(bfd) (core_hdr(bfd)->stack_section)
  77 #define core_regsec(bfd) (core_hdr(bfd)->reg_section)
  78
  79 static asection *
  80 make_bfd_asection (abfd, name, flags, _raw_size, vma, alignment_power)
  81      bfd *abfd;
  82      CONST char *name;
  83      flagword flags;
  84      bfd_size_type _raw_size;
  85      bfd_vma vma;
  86      unsigned int alignment_power;
  87 {
  88   asection *asect;
  89
  90   asect = bfd_make_section (abfd, name);
  91   if (!asect)
  92     return NULL;
  93
  94   asect->flags = flags;
  95   asect->_raw_size = _raw_size;
  96   asect->vma = vma;
  97   asect->filepos = bfd_tell (abfd);
  98   asect->alignment_power = alignment_power;
  99
 100   return asect;
 101 }
 102
 103 static asymbol *
 104 hpux_core_make_empty_symbol (abfd)
 105      bfd *abfd;
 106 {
 107   asymbol *new = (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
 108   if (new)
 109     new->the_bfd = abfd;
 110   return new;
 111 }
 112
 113 static bfd_target *
 114 hpux_core_core_file_p (abfd)
 115      bfd *abfd;
 116 {
 117   core_hdr (abfd) = (struct hpux_core_struct *)
 118     bfd_zalloc (abfd, sizeof (struct hpux_core_struct));
 119   if (!core_hdr (abfd))
 120     return NULL;
 121
 122   while (1)
 123     {
 124       int val;
 125       struct corehead core_header;
 126
 127       val = bfd_read ((void *) &core_header, 1, sizeof core_header, abfd);
 128       if (val <= 0)
 129         break;
 130       switch (core_header.type)
 131         {
 132         case CORE_KERNEL:
 133         case CORE_FORMAT:
 134           bfd_seek (abfd, core_header.len, SEEK_CUR);   /* Just skip this */
 135           break;
 136         case CORE_EXEC:
 137           {
 138             struct proc_exec proc_exec;
 139             if (bfd_read ((void *) &proc_exec, 1, core_header.len, abfd)
 140                 != core_header.len)
 141               break;
 142             strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1);
 143           }
 144           break;
 145         case CORE_PROC:
 146           {
 147             struct proc_info proc_info;
 148             core_regsec (abfd) = make_bfd_asection (abfd, ".reg",
 149                                                SEC_ALLOC + SEC_HAS_CONTENTS,
 150                                                     core_header.len,
 151                                 (int) &proc_info - (int) &proc_info.hw_regs,
 152                                                     2);
 153             if (bfd_read (&proc_info, 1, core_header.len, abfd)
 154                 != core_header.len)
 155               break;
 156             core_signal (abfd) = proc_info.sig;
 157           }
 158           if (!core_regsec (abfd))
 159             return NULL;
 160           break;
 161         case CORE_DATA:
 162           core_datasec (abfd) = make_bfd_asection (abfd, ".data",
 163                                     SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
 164                                                    core_header.len,
 165                                                    core_header.addr,
 166                                                    2);
 167           if (!core_datasec (abfd))
 168             return NULL;
 169           bfd_seek (abfd, core_header.len, SEEK_CUR);
 170           break;
 171         case CORE_STACK:
 172           core_stacksec (abfd) = make_bfd_asection (abfd, ".stack",
 173                                     SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
 174                                                     core_header.len,
 175                                                     core_header.addr,
 176                                                     2);
 177           if (!core_stacksec (abfd))
 178             return NULL;
 179           bfd_seek (abfd, core_header.len, SEEK_CUR);
 180           break;
 181         default:
 182           /* Falling into here is an error and should prevent this
 183              target from matching.  That way systems which use hpux
 184              cores along with other formats can still work.  */
 185           return 0;
 186         }
 187     }
 188
 189   /* OK, we believe you.  You're a core file (sure, sure).  */
 190
 191   return abfd->xvec;
 192 }
 193
 194 static char *
 195 hpux_core_core_file_failing_command (abfd)
 196      bfd *abfd;
 197 {
 198   return core_command (abfd);
 199 }
 200
 201 /* ARGSUSED */
 202 static int
 203 hpux_core_core_file_failing_signal (abfd)
 204      bfd *abfd;
 205 {
 206   return core_signal (abfd);
 207 }
 208
 209 /* ARGSUSED */
 210 static boolean
 211 hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd)
 212      bfd *core_bfd, *exec_bfd;
 213 {
 214   return true;                  /* FIXME, We have no way of telling at this point */
 215 }
 216 \f
 217 #define hpux_core_get_symtab_upper_bound _bfd_nosymbols_get_symtab_upper_bound
 218 #define hpux_core_get_symtab _bfd_nosymbols_get_symtab
 219 #define hpux_core_print_symbol _bfd_nosymbols_print_symbol
 220 #define hpux_core_get_symbol_info _bfd_nosymbols_get_symbol_info
 221 #define hpux_core_bfd_is_local_label _bfd_nosymbols_bfd_is_local_label
 222 #define hpux_core_get_lineno _bfd_nosymbols_get_lineno
 223 #define hpux_core_find_nearest_line _bfd_nosymbols_find_nearest_line
 224 #define hpux_core_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol
 225
 226 /* If somebody calls any byte-swapping routines, shoot them.  */
 227 void
 228 swap_abort()
 229 {
 230   abort(); /* This way doesn't require any declaration for ANSI to fuck up */
 231 }
 232 #define NO_GET  ((bfd_vma (*) PARAMS ((   const bfd_byte *))) swap_abort )
 233 #define NO_PUT  ((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
 234 #define NO_SIGNED_GET \
 235   ((bfd_signed_vma (*) PARAMS ((const bfd_byte *))) swap_abort )
 236
 237 bfd_target hpux_core_vec =
 238   {
 239     "hpux-core",
 240     bfd_target_unknown_flavour,
 241     true,                       /* target byte order */
 242     true,                       /* target headers byte order */
 243     (HAS_RELOC | EXEC_P |       /* object flags */
 244      HAS_LINENO | HAS_DEBUG |
 245      HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
 246     (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 247     0,                                                     /* symbol prefix */
 248     ' ',                                                   /* ar_pad_char */
 249     16,                                                    /* ar_max_namelen */
 250     3,                                                     /* minimum alignment power */
 251     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit data */
 252     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit data */
 253     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit data */
 254     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit hdrs */
 255     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit hdrs */
 256     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit hdrs */
 257
 258     {                           /* bfd_check_format */
 259      _bfd_dummy_target,         /* unknown format */
 260      _bfd_dummy_target,         /* object file */
 261      _bfd_dummy_target,         /* archive */
 262      hpux_core_core_file_p      /* a core file */
 263     },
 264     {                           /* bfd_set_format */
 265      bfd_false, bfd_false,
 266      bfd_false, bfd_false
 267     },
 268     {                           /* bfd_write_contents */
 269      bfd_false, bfd_false,
 270      bfd_false, bfd_false
 271     },
 272
 273        BFD_JUMP_TABLE_GENERIC (_bfd_generic),
 274        BFD_JUMP_TABLE_COPY (_bfd_generic),
 275        BFD_JUMP_TABLE_CORE (hpux_core),
 276        BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
 277        BFD_JUMP_TABLE_SYMBOLS (hpux_core),
 278        BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
 279        BFD_JUMP_TABLE_WRITE (_bfd_generic),
 280        BFD_JUMP_TABLE_LINK (_bfd_nolink),
 281
 282     (PTR) 0                     /* backend_data */
 283 };