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/* Native-dependent code for AMD64 BSD's.
Copyright (C) 2003-2024 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 "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"
#include "amd64-bsd-nat.h"
static PTRACE_TYPE_RET
gdb_ptrace (PTRACE_TYPE_ARG1 request, ptid_t ptid, PTRACE_TYPE_ARG3 addr,
PTRACE_TYPE_ARG4 data)
{
#ifdef __NetBSD__
gdb_assert (data == 0);
/* Support for NetBSD threads: unlike other ptrace implementations in this
file, NetBSD requires that we pass both the pid and lwp. */
return ptrace (request, ptid.pid (), addr, ptid.lwp ());
#else
pid_t pid = get_ptrace_pid (ptid);
return ptrace (request, pid, addr, data);
#endif
}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating-point registers). */
void
amd64bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = regcache->arch ();
ptid_t ptid = regcache->ptid ();
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct reg regs;
if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
amd64_supply_native_gregset (regcache, ®s, -1);
if (regnum != -1)
return;
}
if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct fpreg fpregs;
if (gdb_ptrace (PT_GETFPREGS, 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). */
void
amd64bsd_store_inferior_registers (struct regcache *regcache, int regnum)
{
struct gdbarch *gdbarch = regcache->arch ();
ptid_t ptid = regcache->ptid ();
if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
{
struct reg regs;
if (gdb_ptrace (PT_GETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
amd64_collect_native_gregset (regcache, ®s, regnum);
if (gdb_ptrace (PT_SETREGS, ptid, (PTRACE_TYPE_ARG3) ®s, 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;
if (gdb_ptrace (PT_GETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
amd64_collect_fxsave (regcache, regnum, &fpregs);
if (gdb_ptrace (PT_SETFPREGS, ptid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't write floating point status"));
}
}
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