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/* Native-dependent code for NetBSD/sh.
Copyright (C) 2002-2017 Free Software Foundation, Inc.
Contributed by Wasabi Systems, 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 <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "sh-tdep.h"
#include "inf-ptrace.h"
#include "regcache.h"
/* Determine if PT_GETREGS fetches this register. */
#define GETREGS_SUPPLIES(gdbarch, regno) \
(((regno) >= R0_REGNUM && (regno) <= (R0_REGNUM + 15)) \
|| (regno) == gdbarch_pc_regnum (gdbarch) || (regno) == PR_REGNUM \
|| (regno) == MACH_REGNUM || (regno) == MACL_REGNUM \
|| (regno) == SR_REGNUM)
/* Sizeof `struct reg' in <machine/reg.h>. */
#define SHNBSD_SIZEOF_GREGS (21 * 4)
static void
shnbsd_fetch_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno))
{
struct reg inferior_registers;
if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
perror_with_name (_("Couldn't get registers"));
sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno,
(char *) &inferior_registers,
SHNBSD_SIZEOF_GREGS);
if (regno != -1)
return;
}
}
static void
shnbsd_store_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regno)
{
if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno))
{
struct reg inferior_registers;
if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
perror_with_name (_("Couldn't get registers"));
sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno,
(char *) &inferior_registers,
SHNBSD_SIZEOF_GREGS);
if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
(PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
perror_with_name (_("Couldn't set registers"));
if (regno != -1)
return;
}
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_shnbsd_nat (void);
void
_initialize_shnbsd_nat (void)
{
struct target_ops *t;
t = inf_ptrace_target ();
t->to_fetch_registers = shnbsd_fetch_inferior_registers;
t->to_store_registers = shnbsd_store_inferior_registers;
add_target (t);
}
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