gdb/core-sol2.c

   1 /* Machine independent support for Solaris 2 core files for GDB.
   2    Copyright 1994 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21
  22 /* Solaris comes with two flavours of core files, cores generated by
  23    an ELF executable and cores generated by programs that were
  24    run under BCP (the part of Solaris which allows it to run SunOS4
  25    a.out files).
  26    This file combines the core register fetching from core-regset.c
  27    and sparc-nat.c to be able to read both flavours.  */
  28
  29 #include "defs.h"
  30 #include <time.h>
  31 #include <sys/types.h>
  32 #include <sys/regset.h>
  33 #include <sys/procfs.h>
  34 #include <fcntl.h>
  35 #include <errno.h>
  36 #include "gdb_string.h"
  37
  38 #include "inferior.h"
  39 #include "target.h"
  40 #include "command.h"
  41 #include "gdbcore.h"
  42
  43 static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
  44
  45 static void
  46 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
  47      char *core_reg_sect;
  48      unsigned core_reg_size;
  49      int which;
  50      CORE_ADDR reg_addr;        /* Unused in this version */
  51 {
  52   prgregset_t prgregset;
  53   prfpregset_t prfpregset;
  54
  55   if (which == 0)
  56     {
  57       if (core_reg_size == sizeof (prgregset))
  58         {
  59           memcpy ((char *) &prgregset, core_reg_sect, sizeof (prgregset));
  60           supply_gregset (&prgregset);
  61         }
  62       else if (core_reg_size == sizeof (struct regs))
  63         {
  64 #define gregs ((struct regs *)core_reg_sect)
  65           /* G0 *always* holds 0.  */
  66           *(int *) &registers[REGISTER_BYTE (0)] = 0;
  67
  68           /* The globals and output registers.  */
  69           memcpy (&registers[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
  70                   15 * REGISTER_RAW_SIZE (G1_REGNUM));
  71           *(int *) &registers[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
  72           *(int *) &registers[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
  73           *(int *) &registers[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
  74           *(int *) &registers[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
  75
  76           /* My best guess at where to get the locals and input
  77              registers is exactly where they usually are, right above
  78              the stack pointer.  If the core dump was caused by a bus error
  79              from blowing away the stack pointer (as is possible) then this
  80              won't work, but it's worth the try. */
  81           {
  82             int sp;
  83
  84             sp = *(int *) &registers[REGISTER_BYTE (SP_REGNUM)];
  85             if (0 != target_read_memory (sp,
  86                                       &registers[REGISTER_BYTE (L0_REGNUM)],
  87                                          16 * REGISTER_RAW_SIZE (L0_REGNUM)))
  88               {
  89                 warning ("couldn't read input and local registers from core file\n");
  90               }
  91           }
  92         }
  93       else
  94         {
  95           warning ("wrong size gregset struct in core file");
  96         }
  97     }
  98   else if (which == 2)
  99     {
 100       if (core_reg_size == sizeof (prfpregset))
 101         {
 102           memcpy ((char *) &prfpregset, core_reg_sect, sizeof (prfpregset));
 103           supply_fpregset (&prfpregset);
 104         }
 105       else if (core_reg_size >= sizeof (struct fpu))
 106         {
 107 #define fpuregs  ((struct fpu *) core_reg_sect)
 108           memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &fpuregs->fpu_fr,
 109                   sizeof (fpuregs->fpu_fr));
 110           memcpy (&registers[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr,
 111                   sizeof (FPU_FSR_TYPE));
 112         }
 113       else
 114         {
 115           warning ("wrong size fpregset struct in core file");
 116         }
 117     }
 118 }
 119 \f
 120
 121 /* Register that we are able to handle solaris core file formats. */
 122
 123 static struct core_fns solaris_core_fns =
 124 {
 125   bfd_target_elf_flavour,
 126   fetch_core_registers,
 127   NULL
 128 };
 129
 130 void
 131 _initialize_core_solaris ()
 132 {
 133   add_core_fns (&solaris_core_fns);
 134 }