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sfurman |
/* Machine independent support for Solaris 2 core files for GDB.
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Copyright 1994, 1995, 1996, 1998, 1999, 2000, 2001
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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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#if defined (__sparcv9)
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/* Fails to get included by the Solaris system header files. */
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# include <v9/sys/privregs.h>
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#endif
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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 "regcache.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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/* Prototypes for supply_gregset etc. */
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#include "gregset.h"
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static void fetch_core_registers (char *, unsigned, int, CORE_ADDR);
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/* Fetch registers from core file data pointed to by CORE_REG_SECT. When
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WHICH is 0, the the general register set is fetched; when WHICH is
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2, the floating point registers are fetched. CORE_REG_SIZE is used
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to validate the size of the data pointed to by CORE_REG_SECT. REG_ADDR
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is unused. */
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static void
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fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
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CORE_ADDR reg_addr)
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{
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int i;
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if (which == 0)
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{
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prgregset_t prgregset;
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if (core_reg_size == sizeof (prgregset_t))
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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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#if defined (HAVE_PRGREGSET32_T)
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/* 32-bit corefile, 64-bit debugger. */
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else if (core_reg_size == sizeof (prgregset32_t))
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{
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prgreg32_t *core_gregs;
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/* Can't use memcpy here, because the core file contains
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32-bit regs; supply_register expects 64-bit regs. */
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core_gregs = (prgreg32_t *) core_reg_sect;
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for (i = 0; i < NPRGREG; i++)
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prgregset[i] = core_gregs[i];
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supply_gregset (&prgregset);
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}
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#endif /* HAVE_PRGREGSET32_T */
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else if (core_reg_size == sizeof (struct regs))
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{
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struct regs *gregs = (struct regs *) core_reg_sect;
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/* G0 *always* holds 0. */
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*(int *) ®isters[REGISTER_BYTE (0)] = 0;
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/* The globals and output registers. */
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memcpy (®isters[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
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15 * REGISTER_RAW_SIZE (G1_REGNUM));
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*(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
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*(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
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*(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
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*(int *) ®isters[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 *) ®isters[REGISTER_BYTE (SP_REGNUM)];
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if (0 != target_read_memory (sp,
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®isters[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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prfpregset_t prfpregset;
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if (core_reg_size == sizeof (prfpregset_t))
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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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#if defined (HAVE_PRFPREGSET32_T)
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/* 32-bit corefile, 64-bit debugger. */
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else if (core_reg_size == sizeof (prfpregset32_t))
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{
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prfpregset32_t *core_fpregset;
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/* Can't use memcpy here, because the core file contains
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32-bit regs; supply_fpregset expects 64-bit regs. */
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core_fpregset = (prfpregset32_t *) core_reg_sect;
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for (i = 0; i < 16; i++)
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prfpregset.pr_fr.pr_dregs[i] = core_fpregset->pr_fr.pr_dregs[i];
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while (i < 32)
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prfpregset.pr_fr.pr_dregs[i++] = 0;
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prfpregset.pr_fsr = core_fpregset->pr_fsr;
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prfpregset.pr_qcnt = core_fpregset->pr_qcnt;
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prfpregset.pr_q_entrysize = core_fpregset->pr_q_entrysize;
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prfpregset.pr_en = core_fpregset->pr_en;
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/* We will not use the pr_q array. */
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supply_fpregset (&prfpregset);
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}
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#endif /* HAVE_PRFPREGSET32_T */
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else if (core_reg_size >= sizeof (struct fpu))
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{
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struct fpu *fpuregs = (struct fpu *) core_reg_sect;
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memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &fpuregs->fpu_fr,
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sizeof (fpuregs->fpu_fr));
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memcpy (®isters[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 (void)
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{
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add_core_fns (&solaris_core_fns);
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}
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