| /* 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")); |
| } |
| } |