1 /* Native-dependent code for AMD64 BSD's.
3 Copyright (C) 2003-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 /* We include <signal.h> to make sure `struct fxsave64' is defined on
26 NetBSD, since NetBSD's <machine/reg.h> needs it. */
28 #include <sys/types.h>
29 #include <sys/ptrace.h>
30 #include <machine/reg.h>
32 #include "amd64-tdep.h"
33 #include "amd64-nat.h"
34 #include "x86-bsd-nat.h"
35 #include "inf-ptrace.h"
38 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
39 for all registers (including the floating-point registers). */
42 amd64bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
44 struct gdbarch *gdbarch = regcache->arch ();
45 pid_t pid = get_ptrace_pid (regcache->ptid ());
46 #if defined(PT_GETFSBASE) || defined(PT_GETGSBASE)
47 const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
50 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
54 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
55 perror_with_name (_("Couldn't get registers"));
57 amd64_supply_native_gregset (regcache, ®s, -1);
63 if (regnum == -1 || regnum == tdep->fsbase_regnum)
67 if (ptrace (PT_GETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
68 perror_with_name (_("Couldn't get segment register fs_base"));
70 regcache->raw_supply (tdep->fsbase_regnum, &base);
76 if (regnum == -1 || regnum == tdep->fsbase_regnum + 1)
80 if (ptrace (PT_GETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
81 perror_with_name (_("Couldn't get segment register gs_base"));
83 regcache->raw_supply (tdep->fsbase_regnum + 1, &base);
89 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
92 #ifdef PT_GETXSTATE_INFO
95 if (x86bsd_xsave_len != 0)
97 xstateregs = alloca (x86bsd_xsave_len);
98 if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
100 perror_with_name (_("Couldn't get extended state status"));
102 amd64_supply_xsave (regcache, -1, xstateregs);
107 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
108 perror_with_name (_("Couldn't get floating point status"));
110 amd64_supply_fxsave (regcache, -1, &fpregs);
114 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
115 this for all registers (including the floating-point registers). */
118 amd64bsd_store_inferior_registers (struct regcache *regcache, int regnum)
120 struct gdbarch *gdbarch = regcache->arch ();
121 pid_t pid = get_ptrace_pid (regcache->ptid ());
122 #if defined(PT_SETFSBASE) || defined(PT_SETGSBASE)
123 const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
126 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
130 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
131 perror_with_name (_("Couldn't get registers"));
133 amd64_collect_native_gregset (regcache, ®s, regnum);
135 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
136 perror_with_name (_("Couldn't write registers"));
143 if (regnum == -1 || regnum == tdep->fsbase_regnum)
147 /* Clear the full base value to support 32-bit targets. */
149 regcache->raw_collect (tdep->fsbase_regnum, &base);
151 if (ptrace (PT_SETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
152 perror_with_name (_("Couldn't write segment register fs_base"));
158 if (regnum == -1 || regnum == tdep->fsbase_regnum + 1)
162 /* Clear the full base value to support 32-bit targets. */
164 regcache->raw_collect (tdep->fsbase_regnum + 1, &base);
166 if (ptrace (PT_SETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
167 perror_with_name (_("Couldn't write segment register gs_base"));
173 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
176 #ifdef PT_GETXSTATE_INFO
179 if (x86bsd_xsave_len != 0)
181 xstateregs = alloca (x86bsd_xsave_len);
182 if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
184 perror_with_name (_("Couldn't get extended state status"));
186 amd64_collect_xsave (regcache, regnum, xstateregs, 0);
188 if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs,
189 x86bsd_xsave_len) == -1)
190 perror_with_name (_("Couldn't write extended state status"));
195 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
196 perror_with_name (_("Couldn't get floating point status"));
198 amd64_collect_fxsave (regcache, regnum, &fpregs);
200 if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
201 perror_with_name (_("Couldn't write floating point status"));