133 lines
3.8 KiB
C
133 lines
3.8 KiB
C
/* Native-dependent code for FreeBSD/mips.
|
|
|
|
Copyright (C) 2017-2018 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 "fbsd-nat.h"
|
|
#include "mips-tdep.h"
|
|
#include "mips-fbsd-tdep.h"
|
|
#include "inf-ptrace.h"
|
|
|
|
/* Determine if PT_GETREGS fetches REGNUM. */
|
|
|
|
static bool
|
|
getregs_supplies (struct gdbarch *gdbarch, int regnum)
|
|
{
|
|
return (regnum >= MIPS_ZERO_REGNUM
|
|
&& regnum <= mips_regnum (gdbarch)->pc);
|
|
}
|
|
|
|
/* Determine if PT_GETFPREGS fetches REGNUM. */
|
|
|
|
static bool
|
|
getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
|
|
{
|
|
return (regnum >= mips_regnum (gdbarch)->fp0
|
|
&& regnum <= mips_regnum (gdbarch)->fp_implementation_revision);
|
|
}
|
|
|
|
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
|
|
for all registers. */
|
|
|
|
static void
|
|
mips_fbsd_fetch_inferior_registers (struct target_ops *ops,
|
|
struct regcache *regcache, int regnum)
|
|
{
|
|
pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
|
|
|
|
struct gdbarch *gdbarch = regcache->arch ();
|
|
if (regnum == -1 || getregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct reg regs;
|
|
|
|
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't get registers"));
|
|
|
|
mips_fbsd_supply_gregs (regcache, regnum, ®s, sizeof (register_t));
|
|
}
|
|
|
|
if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct fpreg fpregs;
|
|
|
|
if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
|
mips_fbsd_supply_fpregs (regcache, regnum, &fpregs,
|
|
sizeof (f_register_t));
|
|
}
|
|
}
|
|
|
|
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
|
|
this for all registers. */
|
|
|
|
static void
|
|
mips_fbsd_store_inferior_registers (struct target_ops *ops,
|
|
struct regcache *regcache, int regnum)
|
|
{
|
|
pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
|
|
|
|
struct gdbarch *gdbarch = regcache->arch ();
|
|
if (regnum == -1 || getregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct reg regs;
|
|
|
|
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't get registers"));
|
|
|
|
mips_fbsd_collect_gregs (regcache, regnum, (char *) ®s,
|
|
sizeof (register_t));
|
|
|
|
if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't write registers"));
|
|
}
|
|
|
|
if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
|
|
{
|
|
struct fpreg fpregs;
|
|
|
|
if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
|
mips_fbsd_collect_fpregs (regcache, regnum, (char *) &fpregs,
|
|
sizeof (f_register_t));
|
|
|
|
if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't write floating point status"));
|
|
}
|
|
}
|
|
|
|
void
|
|
_initialize_mips_fbsd_nat (void)
|
|
{
|
|
struct target_ops *t;
|
|
|
|
t = inf_ptrace_target ();
|
|
t->to_fetch_registers = mips_fbsd_fetch_inferior_registers;
|
|
t->to_store_registers = mips_fbsd_store_inferior_registers;
|
|
fbsd_nat_add_target (t);
|
|
}
|