/* Native support for the SGI Iris running IRIX version 4, for GDB.
- Copyright 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1995, 1996, 1999, 2000,
+ 2001 Free Software Foundation, Inc.
Implemented for Irix 4.x by Garrett A. Wollman.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "inferior.h"
+#include "gdbcore.h"
+#include "regcache.h"
#include <sys/time.h>
#include <sys/procfs.h>
#include <setjmp.h> /* For JB_XXX. */
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
/* Size of elements in jmpbuf */
#define JB_ELEMENT_SIZE 4
typedef unsigned int greg_t; /* why isn't this defined? */
+static void fetch_core_registers (char *, unsigned int, int, CORE_ADDR);
+
/*
* See the comment in m68k-tdep.c regarding the utility of these functions.
*/
-void
-supply_gregset (gregsetp)
- gregset_t *gregsetp;
+void
+supply_gregset (gregset_t *gregsetp)
{
register int regi;
- register greg_t *regp = (greg_t *)(gregsetp->gp_regs);
+ register greg_t *regp = (greg_t *) (gregsetp->gp_regs);
+ static char zerobuf[MAX_REGISTER_RAW_SIZE] =
+ {0};
/* FIXME: somewhere, there should be a #define for the meaning
of this magic number 32; we should use that. */
- for(regi = 0; regi < 32; regi++)
- supply_register (regi, (char *)(regp + regi));
+ for (regi = 0; regi < 32; regi++)
+ supply_register (regi, (char *) (regp + regi));
+
+ supply_register (PC_REGNUM, (char *) &(gregsetp->gp_pc));
+ supply_register (HI_REGNUM, (char *) &(gregsetp->gp_mdhi));
+ supply_register (LO_REGNUM, (char *) &(gregsetp->gp_mdlo));
+ supply_register (CAUSE_REGNUM, (char *) &(gregsetp->gp_cause));
- supply_register (PC_REGNUM, (char *)&(gregsetp->gp_pc));
- supply_register (HI_REGNUM, (char *)&(gregsetp->gp_mdhi));
- supply_register (LO_REGNUM, (char *)&(gregsetp->gp_mdlo));
- supply_register (PS_REGNUM, (char *)&(gregsetp->gp_cause));
+ /* Fill inaccessible registers with zero. */
+ supply_register (BADVADDR_REGNUM, zerobuf);
}
void
-fill_gregset (gregsetp, regno)
- gregset_t *gregsetp;
- int regno;
+fill_gregset (gregset_t *gregsetp, int regno)
{
int regi;
- register greg_t *regp = (greg_t *)(gregsetp->gp_regs);
- extern char registers[];
+ register greg_t *regp = (greg_t *) (gregsetp->gp_regs);
- /* same FIXME as above wrt 32*/
+ /* same FIXME as above wrt 32 */
for (regi = 0; regi < 32; regi++)
if ((regno == -1) || (regno == regi))
- *(regp + regi) = *(greg_t *) ®isters[REGISTER_BYTE (regi)];
+ *(regp + regi) = *(greg_t *) & registers[REGISTER_BYTE (regi)];
if ((regno == -1) || (regno == PC_REGNUM))
- gregsetp->gp_pc = *(greg_t *) ®isters[REGISTER_BYTE (PC_REGNUM)];
+ gregsetp->gp_pc = *(greg_t *) & registers[REGISTER_BYTE (PC_REGNUM)];
- if ((regno == -1) || (regno == PS_REGNUM))
- gregsetp->gp_cause = *(greg_t *) ®isters[REGISTER_BYTE (PS_REGNUM)];
+ if ((regno == -1) || (regno == CAUSE_REGNUM))
+ gregsetp->gp_cause = *(greg_t *) & registers[REGISTER_BYTE (CAUSE_REGNUM)];
if ((regno == -1) || (regno == HI_REGNUM))
- gregsetp->gp_mdhi = *(greg_t *) ®isters[REGISTER_BYTE (HI_REGNUM)];
+ gregsetp->gp_mdhi = *(greg_t *) & registers[REGISTER_BYTE (HI_REGNUM)];
if ((regno == -1) || (regno == LO_REGNUM))
- gregsetp->gp_mdlo = *(greg_t *) ®isters[REGISTER_BYTE (LO_REGNUM)];
+ gregsetp->gp_mdlo = *(greg_t *) & registers[REGISTER_BYTE (LO_REGNUM)];
}
/*
*/
void
-supply_fpregset (fpregsetp)
- fpregset_t *fpregsetp;
+supply_fpregset (fpregset_t *fpregsetp)
{
register int regi;
+ static char zerobuf[MAX_REGISTER_RAW_SIZE] =
+ {0};
for (regi = 0; regi < 32; regi++)
supply_register (FP0_REGNUM + regi,
- (char *)&fpregsetp->fp_r.fp_regs[regi]);
+ (char *) &fpregsetp->fp_r.fp_regs[regi]);
- supply_register (FCRCS_REGNUM, (char *)&fpregsetp->fp_csr);
+ supply_register (FCRCS_REGNUM, (char *) &fpregsetp->fp_csr);
/* FIXME: how can we supply FCRIR_REGNUM? SGI doesn't tell us. */
+ supply_register (FCRIR_REGNUM, zerobuf);
}
void
-fill_fpregset (fpregsetp, regno)
- fpregset_t *fpregsetp;
- int regno;
+fill_fpregset (fpregset_t *fpregsetp, int regno)
{
int regi;
char *from, *to;
- extern char registers[];
for (regi = FP0_REGNUM; regi < FP0_REGNUM + 32; regi++)
{
if ((regno == -1) || (regno == regi))
{
from = (char *) ®isters[REGISTER_BYTE (regi)];
- to = (char *) &(fpregsetp->fp_r.fp_regs[regi]);
- bcopy(from, to, REGISTER_RAW_SIZE (regi));
+ to = (char *) &(fpregsetp->fp_r.fp_regs[regi - FP0_REGNUM]);
+ memcpy (to, from, REGISTER_RAW_SIZE (regi));
}
}
if ((regno == -1) || (regno == FCRCS_REGNUM))
- fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE(FCRCS_REGNUM)];
+ fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)];
}
This routine returns true on success. */
int
-get_longjmp_target(pc)
- CORE_ADDR *pc;
+get_longjmp_target (CORE_ADDR *pc)
{
+ char *buf;
CORE_ADDR jb_addr;
- jb_addr = read_register(A0_REGNUM);
+ buf = alloca (TARGET_PTR_BIT / TARGET_CHAR_BIT);
+ jb_addr = read_register (A0_REGNUM);
- if (target_read_memory(jb_addr + JB_PC * JB_ELEMENT_SIZE, pc,
- sizeof(CORE_ADDR)))
+ if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
+ TARGET_PTR_BIT / TARGET_CHAR_BIT))
return 0;
- SWAP_TARGET_AND_HOST(pc, sizeof(CORE_ADDR));
+ *pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
return 1;
}
+
+/* Provide registers to GDB from a core file.
+
+ CORE_REG_SECT points to an array of bytes, which were obtained from
+ a core file which BFD thinks might contain register contents.
+ CORE_REG_SIZE is its size.
+
+ Normally, WHICH says which register set corelow suspects this is:
+ 0 --- the general-purpose register set
+ 2 --- the floating-point register set
+ However, for Irix 4, WHICH isn't used.
+
+ REG_ADDR is also unused. */
+
+static void
+fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
+ int which, CORE_ADDR reg_addr)
+{
+ if (core_reg_size != REGISTER_BYTES)
+ {
+ warning ("wrong size gregset struct in core file");
+ return;
+ }
+
+ memcpy ((char *) registers, core_reg_sect, core_reg_size);
+}
+\f
+
+/* Register that we are able to handle irix4 core file formats.
+ FIXME: is this really bfd_target_unknown_flavour? */
+
+static struct core_fns irix4_core_fns =
+{
+ bfd_target_unknown_flavour, /* core_flavour */
+ default_check_format, /* check_format */
+ default_core_sniffer, /* core_sniffer */
+ fetch_core_registers, /* core_read_registers */
+ NULL /* next */
+};
+
+void
+_initialize_core_irix4 (void)
+{
+ add_core_fns (&irix4_core_fns);
+}
projects / binutils.git / blobdiff