127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
/* Native-dependent code for OpenBSD/mips64.
|
||
|
||
Copyright (C) 2004-2015 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 "inf-ptrace.h"
|
||
#include "obsd-nat.h"
|
||
|
||
/* Shorthand for some register numbers used below. */
|
||
#define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM
|
||
#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
|
||
#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
|
||
|
||
/* Supply the general-purpose registers stored in GREGS to REGCACHE. */
|
||
|
||
static void
|
||
mips64obsd_supply_gregset (struct regcache *regcache, const void *gregs)
|
||
{
|
||
const char *regs = gregs;
|
||
int regnum;
|
||
|
||
for (regnum = MIPS_ZERO_REGNUM; regnum <= MIPS_PC_REGNUM; regnum++)
|
||
regcache_raw_supply (regcache, regnum, regs + regnum * 8);
|
||
|
||
for (regnum = MIPS_FP0_REGNUM; regnum <= MIPS_FSR_REGNUM; regnum++)
|
||
regcache_raw_supply (regcache, regnum, regs + (regnum + 2) * 8);
|
||
}
|
||
|
||
/* Collect the general-purpose registers from REGCACHE and store them
|
||
in GREGS. */
|
||
|
||
static void
|
||
mips64obsd_collect_gregset (const struct regcache *regcache,
|
||
void *gregs, int regnum)
|
||
{
|
||
char *regs = gregs;
|
||
int i;
|
||
|
||
for (i = MIPS_ZERO_REGNUM; i <= MIPS_PC_REGNUM; i++)
|
||
{
|
||
if (regnum == -1 || regnum == i)
|
||
regcache_raw_collect (regcache, i, regs + i * 8);
|
||
}
|
||
|
||
for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
|
||
{
|
||
if (regnum == -1 || regnum == i)
|
||
regcache_raw_collect (regcache, i, regs + (i + 2) * 8);
|
||
}
|
||
}
|
||
|
||
|
||
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
|
||
for all registers. */
|
||
|
||
static void
|
||
mips64obsd_fetch_inferior_registers (struct target_ops *ops,
|
||
struct regcache *regcache, int regnum)
|
||
{
|
||
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"));
|
||
|
||
mips64obsd_supply_gregset (regcache, ®s);
|
||
}
|
||
|
||
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
|
||
this for all registers. */
|
||
|
||
static void
|
||
mips64obsd_store_inferior_registers (struct target_ops *ops,
|
||
struct regcache *regcache, int regnum)
|
||
{
|
||
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"));
|
||
|
||
mips64obsd_collect_gregset (regcache, ®s, regnum);
|
||
|
||
if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
|
||
(PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
||
perror_with_name (_("Couldn't write registers"));
|
||
}
|
||
|
||
|
||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||
void _initialize_mips64obsd_nat (void);
|
||
|
||
void
|
||
_initialize_mips64obsd_nat (void)
|
||
{
|
||
struct target_ops *t;
|
||
|
||
t = inf_ptrace_target ();
|
||
t->to_fetch_registers = mips64obsd_fetch_inferior_registers;
|
||
t->to_store_registers = mips64obsd_store_inferior_registers;
|
||
obsd_add_target (t);
|
||
}
|