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   new->the_bfd = abfd;
 109   return new;
 110 }
 111
 112 static bfd_target *
 113 hpux_core_core_file_p (abfd)
 114      bfd *abfd;
 115 {
 116   core_hdr (abfd) = (struct hpux_core_struct *)
 117     bfd_zalloc (abfd, sizeof (struct hpux_core_struct));
 118   if (!core_hdr (abfd))
 119     return NULL;
 120
 121   while (1)
 122     {
 123       int val;
 124       struct corehead core_header;
 125
 126       val = bfd_read ((void *) &core_header, 1, sizeof core_header, abfd);
 127       if (val <= 0)
 128         break;
 129       switch (core_header.type)
 130         {
 131         case CORE_KERNEL:
 132         case CORE_FORMAT:
 133           bfd_seek (abfd, core_header.len, SEEK_CUR);   /* Just skip this */
 134           break;
 135         case CORE_EXEC:
 136           {
 137             struct proc_exec proc_exec;
 138             bfd_read ((void *) &proc_exec, 1, core_header.len, abfd);
 139             strncpy (core_command (abfd), proc_exec.cmd, MAXCOMLEN + 1);
 140           }
 141           break;
 142         case CORE_PROC:
 143           {
 144             struct proc_info proc_info;
 145             core_regsec (abfd) = make_bfd_asection (abfd, ".reg",
 146                                                SEC_ALLOC + SEC_HAS_CONTENTS,
 147                                                     core_header.len,
 148                                 (int) &proc_info - (int) &proc_info.hw_regs,
 149                                                     2);
 150             bfd_read (&proc_info, 1, core_header.len, abfd);
 151             core_signal (abfd) = proc_info.sig;
 152           }
 153           if (!core_regsec (abfd))
 154             return NULL;
 155           break;
 156         case CORE_DATA:
 157           core_datasec (abfd) = make_bfd_asection (abfd, ".data",
 158                                     SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
 159                                                    core_header.len,
 160                                                    core_header.addr,
 161                                                    2);
 162           if (!core_datasec (abfd))
 163             return NULL;
 164           bfd_seek (abfd, core_header.len, SEEK_CUR);
 165           break;
 166         case CORE_STACK:
 167           core_stacksec (abfd) = make_bfd_asection (abfd, ".stack",
 168                                     SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS,
 169                                                     core_header.len,
 170                                                     core_header.addr,
 171                                                     2);
 172           if (!core_stacksec (abfd))
 173             return NULL;
 174           bfd_seek (abfd, core_header.len, SEEK_CUR);
 175           break;
 176         default:
 177           /* Falling into here is an error and should prevent this
 178              target from matching.  That way systems which use hpux
 179              cores along with other formats can still work.  */
 180           return 0;
 181         }
 182     }
 183
 184   /* OK, we believe you.  You're a core file (sure, sure).  */
 185
 186   return abfd->xvec;
 187 }
 188
 189 static char *
 190 hpux_core_core_file_failing_command (abfd)
 191      bfd *abfd;
 192 {
 193   return core_command (abfd);
 194 }
 195
 196 /* ARGSUSED */
 197 static int
 198 hpux_core_core_file_failing_signal (abfd)
 199      bfd *abfd;
 200 {
 201   return core_signal (abfd);
 202 }
 203
 204 /* ARGSUSED */
 205 static boolean
 206 hpux_core_core_file_matches_executable_p (core_bfd, exec_bfd)
 207      bfd *core_bfd, *exec_bfd;
 208 {
 209   return true;                  /* FIXME, We have no way of telling at this point */
 210 }
 211 \f
 212 /* No archive file support via this BFD */
 213 #define hpux_core_openr_next_archived_file      bfd_generic_openr_next_archived_file
 214 #define hpux_core_generic_stat_arch_elt         bfd_generic_stat_arch_elt
 215 #define hpux_core_slurp_armap                   bfd_false
 216 #define hpux_core_slurp_extended_name_table     bfd_true
 217 #define hpux_core_write_armap                   (boolean (*) PARAMS     \
 218     ((bfd *arch, unsigned int elength, struct orl *map, \
 219       unsigned int orl_count, int stridx))) bfd_false
 220 #define hpux_core_truncate_arname               bfd_dont_truncate_arname
 221
 222 #define hpux_core_close_and_cleanup             bfd_generic_close_and_cleanup
 223 #define hpux_core_set_section_contents          (boolean (*) PARAMS     \
 224         ((bfd *abfd, asection *section, PTR data, file_ptr offset,      \
 225         bfd_size_type count))) bfd_false
 226 #define hpux_core_get_section_contents          bfd_generic_get_section_contents
 227 #define hpux_core_new_section_hook              (boolean (*) PARAMS     \
 228         ((bfd *, sec_ptr))) bfd_true
 229 #define hpux_core_get_symtab_upper_bound        bfd_0u
 230 #define hpux_core_get_symtab                    (unsigned int (*) PARAMS \
 231         ((bfd *, struct symbol_cache_entry **))) bfd_0u
 232 #define hpux_core_get_reloc_upper_bound         (unsigned int (*) PARAMS \
 233         ((bfd *, sec_ptr))) bfd_0u
 234 #define hpux_core_canonicalize_reloc            (unsigned int (*) PARAMS \
 235         ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0u
 236 #define hpux_core_print_symbol                  (void (*) PARAMS        \
 237         ((bfd *, PTR, struct symbol_cache_entry  *,                     \
 238         bfd_print_symbol_type))) bfd_false
 239 #define hpux_core_get_symbol_info               (void (*) PARAMS        \
 240         ((bfd *, struct symbol_cache_entry  *,                  \
 241         symbol_info *))) bfd_false
 242 #define hpux_core_get_lineno                    (alent * (*) PARAMS     \
 243         ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr
 244 #define hpux_core_set_arch_mach                 (boolean (*) PARAMS     \
 245         ((bfd *, enum bfd_architecture, unsigned long))) bfd_false
 246 #define hpux_core_find_nearest_line             (boolean (*) PARAMS     \
 247         ((bfd *abfd, struct sec  *section,                              \
 248          struct symbol_cache_entry  **symbols,bfd_vma offset,           \
 249          CONST char **file, CONST char **func, unsigned int *line))) bfd_false
 250 #define hpux_core_sizeof_headers                (int (*) PARAMS \
 251         ((bfd *, boolean))) bfd_0
 252
 253 #define hpux_core_bfd_debug_info_start          bfd_void
 254 #define hpux_core_bfd_debug_info_end            bfd_void
 255 #define hpux_core_bfd_debug_info_accumulate     (void (*) PARAMS        \
 256         ((bfd *, struct sec *))) bfd_void
 257 #define hpux_core_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents
 258 #define hpux_core_bfd_relax_section             bfd_generic_relax_section
 259 #define hpux_core_bfd_reloc_type_lookup \
 260   ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr)
 261 #define hpux_core_bfd_make_debug_symbol \
 262   ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr)
 263 #define hpux_core_bfd_link_hash_table_create \
 264   ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr)
 265 #define hpux_core_bfd_link_add_symbols \
 266   ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 267 #define hpux_core_bfd_final_link \
 268   ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false)
 269
 270 /* If somebody calls any byte-swapping routines, shoot them.  */
 271 void
 272 swap_abort()
 273 {
 274   abort(); /* This way doesn't require any declaration for ANSI to fuck up */
 275 }
 276 #define NO_GET  ((bfd_vma (*) PARAMS ((         bfd_byte *))) swap_abort )
 277 #define NO_PUT  ((void    (*) PARAMS ((bfd_vma, bfd_byte *))) swap_abort )
 278 #define NO_SIGNED_GET ((bfd_signed_vma (*) PARAMS ((bfd_byte *))) swap_abort )
 279
 280 bfd_target hpux_core_vec =
 281   {
 282     "hpux-core",
 283     bfd_target_unknown_flavour,
 284     true,                       /* target byte order */
 285     true,                       /* target headers byte order */
 286     (HAS_RELOC | EXEC_P |       /* object flags */
 287      HAS_LINENO | HAS_DEBUG |
 288      HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
 289     (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
 290     0,                                                     /* symbol prefix */
 291     ' ',                                                   /* ar_pad_char */
 292     16,                                                    /* ar_max_namelen */
 293     3,                                                     /* minimum alignment power */
 294     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit data */
 295     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit data */
 296     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit data */
 297     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 64 bit hdrs */
 298     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 32 bit hdrs */
 299     NO_GET, NO_SIGNED_GET, NO_PUT,      /* 16 bit hdrs */
 300
 301     {                           /* bfd_check_format */
 302      _bfd_dummy_target,         /* unknown format */
 303      _bfd_dummy_target,         /* object file */
 304      _bfd_dummy_target,         /* archive */
 305      hpux_core_core_file_p      /* a core file */
 306     },
 307     {                           /* bfd_set_format */
 308      bfd_false, bfd_false,
 309      bfd_false, bfd_false
 310     },
 311     {                           /* bfd_write_contents */
 312      bfd_false, bfd_false,
 313      bfd_false, bfd_false
 314     },
 315
 316     JUMP_TABLE(hpux_core),
 317     (PTR) 0                     /* backend_data */
 318 };