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/* Native-dependent code for Alpha BSD's.
Copyright 2000, 2001, 2002 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 "regcache.h"
#include "alpha-tdep.h"
#include "alphabsd-tdep.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#ifdef HAVE_SYS_PROCFS_H
#include <sys/procfs.h>
#endif
#ifndef HAVE_GREGSET_T
typedef struct reg gregset_t;
#endif
#ifndef HAVE_FPREGSET_T
typedef struct fpreg fpregset_t;
#endif
#include "gregset.h"
/* Provide *regset() wrappers around the generic Alpha BSD register
supply/fill routines. */
void
supply_gregset (gregset_t *gregsetp)
{
alphabsd_supply_reg ((char *) gregsetp, -1);
}
void
fill_gregset (gregset_t *gregsetp, int regno)
{
alphabsd_fill_reg ((char *) gregsetp, regno);
}
void
supply_fpregset (fpregset_t *fpregsetp)
{
alphabsd_supply_fpreg ((char *) fpregsetp, -1);
}
void
fill_fpregset (fpregset_t *fpregsetp, int regno)
{
alphabsd_fill_fpreg ((char *) fpregsetp, regno);
}
/* Determine if PT_GETREGS fetches this register. */
static int
getregs_supplies (int regno)
{
return ((regno >= ALPHA_V0_REGNUM && regno <= ALPHA_ZERO_REGNUM)
|| regno >= PC_REGNUM);
}
/* Fetch register REGNO from the inferior. If REGNO is -1, do this
for all registers (including the floating point registers). */
void
fetch_inferior_registers (int regno)
{
if (regno == -1 || getregs_supplies (regno))
{
struct reg gregs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &gregs, 0) == -1)
perror_with_name ("Couldn't get registers");
alphabsd_supply_reg ((char *) &gregs, regno);
if (regno != -1)
return;
}
if (regno == -1 || regno >= FP0_REGNUM)
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
alphabsd_supply_fpreg ((char *) &fpregs, regno);
}
/* Reset virtual frame pointer. */
supply_register (FP_REGNUM, NULL);
}
/* Store register REGNO back into the inferior. If REGNO is -1, do
this for all registers (including the floating point registers). */
void
store_inferior_registers (int regno)
{
if (regno == -1 || getregs_supplies (regno))
{
struct reg gregs;
if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &gregs, 0) == -1)
perror_with_name ("Couldn't get registers");
alphabsd_fill_reg ((char *) &gregs, regno);
if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &gregs, 0) == -1)
perror_with_name ("Couldn't write registers");
if (regno != -1)
return;
}
if (regno == -1 || regno >= FP0_REGNUM)
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't get floating point status");
alphabsd_fill_fpreg ((char *) &fpregs, regno);
if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
perror_with_name ("Couldn't write floating point status");
}
}
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