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/* Low level MIPS interface to ptrace, for GDB when running under Unix.
Copyright (C) 1988, 1989, 1991 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.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#ifdef sgi
#include <sys/inst.h>
#else
#include <mips/inst.h>
#endif
#include "defs.h"
#include "frame.h"
#include "inferior.h"
#include "symtab.h"
#include "value.h"
#ifdef USG
#include <sys/types.h>
#endif
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
#include <sys/ioctl.h>
/* #include <fcntl.h> Can we live without this? */
#include "gdbcore.h"
#include <sys/user.h> /* After a.out.h */
#include <sys/file.h>
#include <sys/stat.h>
/* For now we stub this out; sgi format is super-hairy (and completely
different in the new release) */
#ifdef sgi
void
fetch_core_registers ()
{
return;
}
/* ARGSUSED */
void
fetch_inferior_registers (regno)
int regno;
{
return;
}
/* ARGSUSED */
void
store_inferior_registers (regno)
int regno;
{
return;
}
#else
/* Map gdb internal register number to ptrace address. */
#define REGISTER_PTRACE_ADDR(regno) \
(regno < 32 ? regno \
: regno == PC_REGNUM ? 96 \
: regno == CAUSE_REGNUM ? 97 \
: regno == HI_REGNUM ? 98 \
: regno == LO_REGNUM ? 99 \
: regno == FCRCS_REGNUM ? 100 \
: regno == FCRIR_REGNUM ? 101 \
: regno >= FP0_REGNUM ? regno - (FP0_REGNUM-32)\
: 0)
/* Get all registers from the inferior */
void
fetch_inferior_registers (regno)
int regno;
{
register unsigned int regaddr;
char buf[MAX_REGISTER_RAW_SIZE];
register int i;
registers_fetched ();
for (regno = 1; regno < NUM_REGS; regno++)
{
regaddr = REGISTER_PTRACE_ADDR (regno);
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
*(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0);
regaddr += sizeof (int);
}
supply_register (regno, buf);
}
}
/* 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;
{
register unsigned int regaddr;
char buf[80];
if (regno == 0)
return;
if (regno > 0)
{
regaddr = REGISTER_PTRACE_ADDR (regno);
errno = 0;
ptrace (6, inferior_pid, regaddr, read_register (regno));
if (errno != 0)
{
sprintf (buf, "writing register number %d", regno);
perror_with_name (buf);
}
}
else
{
for (regno = 0; regno < NUM_REGS; regno++)
{
if (regno == ZERO_REGNUM || regno == PS_REGNUM
|| regno == BADVADDR_REGNUM || regno == CAUSE_REGNUM
|| regno == FCRIR_REGNUM || regno == FP_REGNUM)
continue;
regaddr = register_addr (regno, 1);
errno = 0;
ptrace (6, inferior_pid, regaddr, read_register (regno));
if (errno != 0)
{
sprintf (buf, "writing all regs, number %d", regno);
perror_with_name (buf);
}
}
}
}
#endif /* sgi */
#if 0
void
fetch_core_registers ()
{
register int regno;
int val;
for (regno = 1; regno < NUM_REGS; regno++) {
char buf[MAX_REGISTER_RAW_SIZE];
val = bfd_seek (core_bfd, register_addr (regno, 0));
if (val < 0 || (val = bfd_read (core_bfd, buf, sizeof buf)) < 0) {
char buffer[50];
strcpy (buffer, "Reading register ");
strcat (buffer, reg_names[regno]);
perror_with_name (buffer);
}
supply_register (regno, buf);
}
}
#endif /* 0 */
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