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/* Native-dependent code for MIPS systems running NetBSD.
Copyright (C) 2000-2016 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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
#include "regcache.h"
#include "target.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "mips-tdep.h"
#include "mipsnbsd-tdep.h"
#include "inf-ptrace.h"
/* Determine if PT_GETREGS fetches this register. */
static int
getregs_supplies (struct gdbarch *gdbarch, int regno)
{
return ((regno) >= MIPS_ZERO_REGNUM
&& (regno) <= gdbarch_pc_regnum (gdbarch));
}
static void
mipsnbsd_fetch_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
if (regno == -1 || getregs_supplies (gdbarch, regno))
{
struct reg regs;
if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
mipsnbsd_supply_reg (regcache, (char *) ®s, regno);
if (regno != -1)
return;
}
if (regno == -1
|| regno >= gdbarch_fp0_regnum (get_regcache_arch (regcache)))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
mipsnbsd_supply_fpreg (regcache, (char *) &fpregs, regno);
}
}
static void
mipsnbsd_store_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
if (regno == -1 || getregs_supplies (gdbarch, regno))
{
struct reg regs;
if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
mipsnbsd_fill_reg (regcache, (char *) ®s, regno);
if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't write registers"));
if (regno != -1)
return;
}
if (regno == -1
|| regno >= gdbarch_fp0_regnum (get_regcache_arch (regcache)))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
mipsnbsd_fill_fpreg (regcache, (char *) &fpregs, regno);
if (ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't write floating point status"));
}
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_mipsnbsd_nat (void);
void
_initialize_mipsnbsd_nat (void)
{
struct target_ops *t;
t = inf_ptrace_target ();
t->to_fetch_registers = mipsnbsd_fetch_inferior_registers;
t->to_store_registers = mipsnbsd_store_inferior_registers;
add_target (t);
}
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