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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [core-sol2.c] - Blame information for rev 1765

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1 104 markom
/* Machine independent support for Solaris 2 core files for GDB.
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   Copyright 1994 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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/* Solaris comes with two flavours of core files, cores generated by
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   an ELF executable and cores generated by programs that were
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   run under BCP (the part of Solaris which allows it to run SunOS4
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   a.out files).
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   This file combines the core register fetching from core-regset.c
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   and sparc-nat.c to be able to read both flavours.  */
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#include "defs.h"
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#include <time.h>
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#include <sys/types.h>
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#include <sys/regset.h>
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#include <sys/procfs.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "gdb_string.h"
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#include "inferior.h"
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#include "target.h"
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#include "command.h"
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#include "gdbcore.h"
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static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
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static void
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fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
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     char *core_reg_sect;
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     unsigned core_reg_size;
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     int which;
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     CORE_ADDR reg_addr;        /* Unused in this version */
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{
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  prgregset_t prgregset;
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  prfpregset_t prfpregset;
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  if (which == 0)
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    {
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      if (core_reg_size == sizeof (prgregset))
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        {
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          memcpy ((char *) &prgregset, core_reg_sect, sizeof (prgregset));
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          supply_gregset (&prgregset);
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        }
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      else if (core_reg_size == sizeof (struct regs))
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        {
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#define gregs ((struct regs *)core_reg_sect)
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          /* G0 *always* holds 0.  */
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          *(int *) &registers[REGISTER_BYTE (0)] = 0;
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          /* The globals and output registers.  */
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          memcpy (&registers[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
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                  15 * REGISTER_RAW_SIZE (G1_REGNUM));
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          *(int *) &registers[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
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          *(int *) &registers[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
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          *(int *) &registers[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
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          *(int *) &registers[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
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          /* My best guess at where to get the locals and input
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             registers is exactly where they usually are, right above
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             the stack pointer.  If the core dump was caused by a bus error
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             from blowing away the stack pointer (as is possible) then this
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             won't work, but it's worth the try. */
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          {
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            int sp;
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            sp = *(int *) &registers[REGISTER_BYTE (SP_REGNUM)];
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            if (0 != target_read_memory (sp,
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                                      &registers[REGISTER_BYTE (L0_REGNUM)],
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                                         16 * REGISTER_RAW_SIZE (L0_REGNUM)))
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              {
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                warning ("couldn't read input and local registers from core file\n");
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              }
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          }
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        }
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      else
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        {
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          warning ("wrong size gregset struct in core file");
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        }
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    }
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  else if (which == 2)
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    {
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      if (core_reg_size == sizeof (prfpregset))
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        {
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          memcpy ((char *) &prfpregset, core_reg_sect, sizeof (prfpregset));
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          supply_fpregset (&prfpregset);
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        }
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      else if (core_reg_size >= sizeof (struct fpu))
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        {
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#define fpuregs  ((struct fpu *) core_reg_sect)
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          memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)], &fpuregs->fpu_fr,
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                  sizeof (fpuregs->fpu_fr));
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          memcpy (&registers[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr,
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                  sizeof (FPU_FSR_TYPE));
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        }
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      else
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        {
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          warning ("wrong size fpregset struct in core file");
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        }
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    }
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}
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/* Register that we are able to handle solaris core file formats. */
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static struct core_fns solaris_core_fns =
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{
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  bfd_target_elf_flavour,               /* core_flavour */
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  default_check_format,                 /* check_format */
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  default_core_sniffer,                 /* core_sniffer */
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  fetch_core_registers,                 /* core_read_registers */
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  NULL                                  /* next */
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};
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void
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_initialize_core_solaris ()
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{
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  add_core_fns (&solaris_core_fns);
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}

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