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, Boston, MA 02111-1307, USA.  */
  19
  20
  21 /* Solaris comes with two flavours of core files, cores generated by
  22    an ELF executable and cores generated by programs that were
  23    run under BCP (the part of Solaris which allows it to run SunOS4
  24    a.out files).
  25    This file combines the core register fetching from core-regset.c
  26    and sparc-nat.c to be able to read both flavours.  */
  27
  28 #include "defs.h"
  29 #include <time.h>
  30 #include <sys/types.h>
  31 #include <sys/regset.h>
  32 #include <sys/procfs.h>
  33 #include <fcntl.h>
  34 #include <errno.h>
  35 #include "gdb_string.h"
  36
  37 #include "inferior.h"
  38 #include "target.h"
  39 #include "command.h"
  40 #include "gdbcore.h"
  41
  42 static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
  43
  44 static void
  45 fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
  46      char *core_reg_sect;
  47      unsigned core_reg_size;
  48      int which;
  49      CORE_ADDR reg_addr;        /* Unused in this version */
  50 {
  51   prgregset_t prgregset;
  52   prfpregset_t prfpregset;
  53
  54   if (which == 0)
  55     {
  56       if (core_reg_size == sizeof (prgregset))
  57         {
  58           memcpy ((char *) &prgregset, core_reg_sect, sizeof (prgregset));
  59           supply_gregset (&prgregset);
  60         }
  61       else if (core_reg_size == sizeof (struct regs))
  62         {
  63 #define gregs ((struct regs *)core_reg_sect)
  64           /* G0 *always* holds 0.  */
  65           *(int *)&registers[REGISTER_BYTE (0)] = 0;
  66
  67           /* The globals and output registers.  */
  68           memcpy (&registers[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
  69                   15 * REGISTER_RAW_SIZE (G1_REGNUM));
  70           *(int *)&registers[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
  71           *(int *)&registers[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
  72           *(int *)&registers[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
  73           *(int *)&registers[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
  74
  75           /* My best guess at where to get the locals and input
  76              registers is exactly where they usually are, right above
  77              the stack pointer.  If the core dump was caused by a bus error
  78              from blowing away the stack pointer (as is possible) then this
  79              won't work, but it's worth the try. */
  80           {
  81             int sp;
  82
  83             sp = *(int *)&registers[REGISTER_BYTE (SP_REGNUM)];
  84             if (0 != target_read_memory (sp,
  85                                          &registers[REGISTER_BYTE (L0_REGNUM)],
  86                                          16 * REGISTER_RAW_SIZE (L0_REGNUM)))
  87               {
  88                 warning ("couldn't read input and local registers from core file\n");
  89               }
  90           }
  91         }
  92       else
  93         {
  94           warning ("wrong size gregset struct in core file");
  95         }
  96     }
  97   else if (which == 2)
  98     {
  99       if (core_reg_size == sizeof (prfpregset))
 100         {
 101           memcpy ((char *) &prfpregset, core_reg_sect, sizeof (prfpregset));
 102           supply_fpregset (&prfpregset);
 103         }
 104       else if (core_reg_size >= sizeof (struct fpu))
 105         {
 106 #define fpuregs  ((struct fpu *) core_reg_sect)
 107           memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &fpuregs->fpu_fr,
 108                   sizeof (fpuregs->fpu_fr));
 109           memcpy (&registers[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr,
 110                   sizeof (FPU_FSR_TYPE));
 111         }
 112       else
 113         {
 114           warning ("wrong size fpregset struct in core file");
 115         }
 116     }
 117 }
 118
 119 \f
 120 /* Register that we are able to handle solaris core file formats. */
 121
 122 static struct core_fns solaris_core_fns =
 123 {
 124   bfd_target_elf_flavour,
 125   fetch_core_registers,
 126   NULL
 127 };
 128
 129 void
 130 _initialize_core_solaris ()
 131 {
 132   add_core_fns (&solaris_core_fns);
 133 }