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- /* Native-dependent code for AMD64 BSD's.
- Copyright (C) 2003-2022 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"
- #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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