/* Native-dependent code for AMD64 BSD's.

Copyright (C) 2003-2016 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"

/* We include <signal.h> to make sure `struct fxsave64' is defined on

NetBSD, since NetBSD's <machine/reg.h> needs it. */

#include <signal.h>

#include <sys/types.h>

#include <sys/ptrace.h>

#include <machine/reg.h>

#include "amd64-tdep.h"

#include "amd64-nat.h"

#include "x86-bsd-nat.h"

#include "inf-ptrace.h"



/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this

for all registers (including the floating-point registers). */

static void

amd64bsd_fetch_inferior_registers (struct target_ops *ops,

struct regcache *regcache, int regnum)

{

struct gdbarch *gdbarch = get_regcache_arch (regcache);

if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))

{

struct reg regs;

if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) &regs, 0) == -1)

perror_with_name (_("Couldn't get registers"));

amd64_supply_native_gregset (regcache, &regs, -1);

if (regnum != -1)

return;

}

if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))

{

struct fpreg fpregs;

#ifdef PT_GETXSTATE_INFO

void *xstateregs;

if (x86bsd_xsave_len != 0)

{

xstateregs = alloca (x86bsd_xsave_len);

if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) xstateregs, 0) == -1)

perror_with_name (_("Couldn't get extended state status"));

amd64_supply_xsave (regcache, -1, xstateregs);

return;

}

#endif

if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)

perror_with_name (_("Couldn't get floating point status"));

amd64_supply_fxsave (regcache, -1, &fpregs);

}

}

/* Store register REGNUM back into the inferior. If REGNUM is -1, do

this for all registers (including the floating-point registers). */

static void

amd64bsd_store_inferior_registers (struct target_ops *ops,

struct regcache *regcache, int regnum)

{

struct gdbarch *gdbarch = get_regcache_arch (regcache);

if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))

{

struct reg regs;

if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) &regs, 0) == -1)

perror_with_name (_("Couldn't get registers"));

amd64_collect_native_gregset (regcache, &regs, regnum);

if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) &regs, 0) == -1)

perror_with_name (_("Couldn't write registers"));

if (regnum != -1)

return;

}

if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))

{

struct fpreg fpregs;

#ifdef PT_GETXSTATE_INFO

void *xstateregs;

if (x86bsd_xsave_len != 0)

{

xstateregs = alloca (x86bsd_xsave_len);

if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) xstateregs, 0) == -1)

perror_with_name (_("Couldn't get extended state status"));

amd64_collect_xsave (regcache, regnum, xstateregs, 0);

if (ptrace (PT_SETXSTATE, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) xstateregs, x86bsd_xsave_len) == -1)

perror_with_name (_("Couldn't write extended state status"));

return;

}

#endif

if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)

perror_with_name (_("Couldn't get floating point status"));

amd64_collect_fxsave (regcache, regnum, &fpregs);

if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid),

(PTRACE_TYPE_ARG3) &fpregs, 0) == -1)

perror_with_name (_("Couldn't write floating point status"));

}

}

/* Create a prototype *BSD/amd64 target. The client can override it

with local methods. */

struct target_ops *

amd64bsd_target (void)

{

struct target_ops *t;

t = x86bsd_target ();

t->to_fetch_registers = amd64bsd_fetch_inferior_registers;

t->to_store_registers = amd64bsd_store_inferior_registers;

return t;

}