1999-04-16 03:35:26 +02:00
|
|
|
|
/* Native support for the SGI Iris running IRIX version 4, for GDB.
|
|
|
|
|
Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1995
|
|
|
|
|
Free Software Foundation, Inc.
|
|
|
|
|
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
|
|
|
|
|
and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
|
|
|
|
|
Implemented for Irix 4.x by Garrett A. Wollman.
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
This file is part of GDB.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
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.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
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.
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
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. */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
|
#include "inferior.h"
|
|
|
|
|
#include "gdbcore.h"
|
|
|
|
|
|
|
|
|
|
#include <sys/time.h>
|
|
|
|
|
#include <sys/procfs.h>
|
|
|
|
|
#include <setjmp.h> /* For JB_XXX. */
|
|
|
|
|
|
|
|
|
|
/* 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 PARAMS ((char *, unsigned int, int, CORE_ADDR));
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* See the comment in m68k-tdep.c regarding the utility of these functions.
|
|
|
|
|
*/
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
void
|
1999-04-16 03:35:26 +02:00
|
|
|
|
supply_gregset (gregsetp)
|
|
|
|
|
gregset_t *gregsetp;
|
|
|
|
|
{
|
|
|
|
|
register int regi;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
register greg_t *regp = (greg_t *) (gregsetp->gp_regs);
|
|
|
|
|
static char zerobuf[MAX_REGISTER_RAW_SIZE] =
|
|
|
|
|
{0};
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* FIXME: somewhere, there should be a #define for the meaning
|
|
|
|
|
of this magic number 32; we should use that. */
|
1999-07-07 22:19:36 +02:00
|
|
|
|
for (regi = 0; regi < 32; regi++)
|
|
|
|
|
supply_register (regi, (char *) (regp + regi));
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
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));
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* Fill inaccessible registers with zero. */
|
|
|
|
|
supply_register (BADVADDR_REGNUM, zerobuf);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
fill_gregset (gregsetp, regno)
|
|
|
|
|
gregset_t *gregsetp;
|
|
|
|
|
int regno;
|
|
|
|
|
{
|
|
|
|
|
int regi;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
register greg_t *regp = (greg_t *) (gregsetp->gp_regs);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
/* same FIXME as above wrt 32 */
|
1999-04-16 03:35:26 +02:00
|
|
|
|
for (regi = 0; regi < 32; regi++)
|
|
|
|
|
if ((regno == -1) || (regno == regi))
|
1999-07-07 22:19:36 +02:00
|
|
|
|
*(regp + regi) = *(greg_t *) & registers[REGISTER_BYTE (regi)];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
if ((regno == -1) || (regno == PC_REGNUM))
|
1999-07-07 22:19:36 +02:00
|
|
|
|
gregsetp->gp_pc = *(greg_t *) & registers[REGISTER_BYTE (PC_REGNUM)];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
if ((regno == -1) || (regno == CAUSE_REGNUM))
|
1999-07-07 22:19:36 +02:00
|
|
|
|
gregsetp->gp_cause = *(greg_t *) & registers[REGISTER_BYTE (CAUSE_REGNUM)];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
if ((regno == -1) || (regno == HI_REGNUM))
|
1999-07-07 22:19:36 +02:00
|
|
|
|
gregsetp->gp_mdhi = *(greg_t *) & registers[REGISTER_BYTE (HI_REGNUM)];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
if ((regno == -1) || (regno == LO_REGNUM))
|
1999-07-07 22:19:36 +02:00
|
|
|
|
gregsetp->gp_mdlo = *(greg_t *) & registers[REGISTER_BYTE (LO_REGNUM)];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Now we do the same thing for floating-point registers.
|
|
|
|
|
* We don't bother to condition on FP0_REGNUM since any
|
|
|
|
|
* reasonable MIPS configuration has an R3010 in it.
|
|
|
|
|
*
|
|
|
|
|
* Again, see the comments in m68k-tdep.c.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
supply_fpregset (fpregsetp)
|
|
|
|
|
fpregset_t *fpregsetp;
|
|
|
|
|
{
|
|
|
|
|
register int regi;
|
1999-07-07 22:19:36 +02:00
|
|
|
|
static char zerobuf[MAX_REGISTER_RAW_SIZE] =
|
|
|
|
|
{0};
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
for (regi = 0; regi < 32; regi++)
|
|
|
|
|
supply_register (FP0_REGNUM + regi,
|
1999-07-07 22:19:36 +02:00
|
|
|
|
(char *) &fpregsetp->fp_r.fp_regs[regi]);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
supply_register (FCRCS_REGNUM, (char *) &fpregsetp->fp_csr);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
|
|
|
|
|
/* 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;
|
|
|
|
|
{
|
|
|
|
|
int regi;
|
|
|
|
|
char *from, *to;
|
|
|
|
|
|
|
|
|
|
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 - FP0_REGNUM]);
|
1999-07-07 22:19:36 +02:00
|
|
|
|
memcpy (to, from, REGISTER_RAW_SIZE (regi));
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if ((regno == -1) || (regno == FCRCS_REGNUM))
|
1999-07-07 22:19:36 +02:00
|
|
|
|
fpregsetp->fp_csr = *(unsigned *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)];
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Figure out where the longjmp will land.
|
|
|
|
|
We expect the first arg to be a pointer to the jmp_buf structure from which
|
|
|
|
|
we extract the pc (JB_PC) that we will land at. The pc is copied into PC.
|
|
|
|
|
This routine returns true on success. */
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
|
get_longjmp_target (pc)
|
|
|
|
|
CORE_ADDR *pc;
|
|
|
|
|
{
|
|
|
|
|
char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
|
|
|
|
|
CORE_ADDR jb_addr;
|
|
|
|
|
|
|
|
|
|
jb_addr = read_register (A0_REGNUM);
|
|
|
|
|
|
|
|
|
|
if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
|
|
|
|
|
TARGET_PTR_BIT / TARGET_CHAR_BIT))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
*pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
|
|
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
|
|
|
|
|
char *core_reg_sect;
|
|
|
|
|
unsigned core_reg_size;
|
|
|
|
|
int which; /* Unused */
|
|
|
|
|
CORE_ADDR reg_addr; /* Unused */
|
|
|
|
|
{
|
|
|
|
|
if (core_reg_size != REGISTER_BYTES)
|
|
|
|
|
{
|
|
|
|
|
warning ("wrong size gregset struct in core file");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
memcpy ((char *) registers, core_reg_sect, core_reg_size);
|
1999-04-16 03:35:26 +02:00
|
|
|
|
}
|
|
|
|
|
|
1999-07-07 22:19:36 +02:00
|
|
|
|
|
1999-04-16 03:35:26 +02:00
|
|
|
|
/* 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,
|
|
|
|
|
fetch_core_registers,
|
|
|
|
|
NULL
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
_initialize_core_irix4 ()
|
|
|
|
|
{
|
|
|
|
|
add_core_fns (&irix4_core_fns);
|
|
|
|
|
}
|