158 lines
4.6 KiB
C
158 lines
4.6 KiB
C
/* Host-dependent code for Sun-3 for GDB, the GNU debugger.
|
||
Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
|
||
|
||
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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "inferior.h"
|
||
#include "gdbcore.h"
|
||
|
||
#include <sys/ptrace.h>
|
||
#define KERNEL /* To get floating point reg definitions */
|
||
#include <machine/reg.h>
|
||
|
||
static void fetch_core_registers PARAMS ((char *, unsigned, int, CORE_ADDR));
|
||
|
||
void
|
||
fetch_inferior_registers (regno)
|
||
int regno;
|
||
{
|
||
struct regs inferior_registers;
|
||
#ifdef FP0_REGNUM
|
||
struct fp_status inferior_fp_registers;
|
||
#endif
|
||
extern char registers[];
|
||
|
||
registers_fetched ();
|
||
|
||
ptrace (PTRACE_GETREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_registers);
|
||
#ifdef FP0_REGNUM
|
||
ptrace (PTRACE_GETFPREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_fp_registers);
|
||
#endif
|
||
|
||
memcpy (registers, &inferior_registers, 16 * 4);
|
||
#ifdef FP0_REGNUM
|
||
memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
|
||
sizeof inferior_fp_registers.fps_regs);
|
||
#endif
|
||
*(int *)®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
|
||
*(int *)®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
|
||
#ifdef FP0_REGNUM
|
||
memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)],
|
||
&inferior_fp_registers.fps_control,
|
||
sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
|
||
#endif
|
||
}
|
||
|
||
/* Store our register values back into the inferior.
|
||
If REGNO is -1, do this for all registers.
|
||
Otherwise, REGNO specifies which register (so we can save time). */
|
||
|
||
void
|
||
store_inferior_registers (regno)
|
||
int regno;
|
||
{
|
||
struct regs inferior_registers;
|
||
#ifdef FP0_REGNUM
|
||
struct fp_status inferior_fp_registers;
|
||
#endif
|
||
extern char registers[];
|
||
|
||
memcpy (&inferior_registers, registers, 16 * 4);
|
||
#ifdef FP0_REGNUM
|
||
memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
|
||
sizeof inferior_fp_registers.fps_regs);
|
||
#endif
|
||
inferior_registers.r_ps = *(int *)®isters[REGISTER_BYTE (PS_REGNUM)];
|
||
inferior_registers.r_pc = *(int *)®isters[REGISTER_BYTE (PC_REGNUM)];
|
||
|
||
#ifdef FP0_REGNUM
|
||
memcpy (&inferior_fp_registers.fps_control,
|
||
®isters[REGISTER_BYTE (FPC_REGNUM)],
|
||
sizeof inferior_fp_registers - sizeof inferior_fp_registers.fps_regs);
|
||
#endif
|
||
|
||
ptrace (PTRACE_SETREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_registers);
|
||
#if FP0_REGNUM
|
||
ptrace (PTRACE_SETFPREGS, inferior_pid,
|
||
(PTRACE_ARG3_TYPE) &inferior_fp_registers);
|
||
#endif
|
||
}
|
||
|
||
|
||
/* All of this stuff is only relevant if both host and target are sun3. */
|
||
/* Machine-dependent code for pulling registers out of a Sun-3 core file. */
|
||
|
||
static void
|
||
fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
|
||
char *core_reg_sect;
|
||
unsigned core_reg_size;
|
||
int which;
|
||
CORE_ADDR reg_addr; /* Unused in this version */
|
||
{
|
||
extern char registers[];
|
||
struct regs *regs = (struct regs *) core_reg_sect;
|
||
|
||
if (which == 0) {
|
||
if (core_reg_size < sizeof (struct regs))
|
||
error ("Can't find registers in core file");
|
||
|
||
memcpy (registers, (char *)regs, 16 * 4);
|
||
supply_register (PS_REGNUM, (char *)®s->r_ps);
|
||
supply_register (PC_REGNUM, (char *)®s->r_pc);
|
||
|
||
} else if (which == 2) {
|
||
|
||
#define fpustruct ((struct fpu *) core_reg_sect)
|
||
|
||
if (core_reg_size >= sizeof (struct fpu))
|
||
{
|
||
#ifdef FP0_REGNUM
|
||
memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)],
|
||
fpustruct->f_fpstatus.fps_regs,
|
||
sizeof fpustruct->f_fpstatus.fps_regs);
|
||
memcpy (®isters[REGISTER_BYTE (FPC_REGNUM)],
|
||
&fpustruct->f_fpstatus.fps_control,
|
||
sizeof fpustruct->f_fpstatus -
|
||
sizeof fpustruct->f_fpstatus.fps_regs);
|
||
#endif
|
||
}
|
||
else
|
||
fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
|
||
}
|
||
}
|
||
|
||
|
||
/* Register that we are able to handle sun3 core file formats.
|
||
FIXME: is this really bfd_target_unknown_flavour? */
|
||
|
||
static struct core_fns sun3_core_fns =
|
||
{
|
||
bfd_target_unknown_flavour,
|
||
fetch_core_registers,
|
||
NULL
|
||
};
|
||
|
||
void
|
||
_initialize_core_sun3 ()
|
||
{
|
||
add_core_fns (&sun3_core_fns);
|
||
}
|