1 /* Native-dependent code for AMD64 BSD's.
3 Copyright (C) 2003-2018 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 target_ops *ops,
43 struct regcache *regcache, int regnum)
45 struct gdbarch *gdbarch = regcache->arch ();
46 pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
48 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
52 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
53 perror_with_name (_("Couldn't get registers"));
55 amd64_supply_native_gregset (regcache, ®s, -1);
61 if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM)
65 if (ptrace (PT_GETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
66 perror_with_name (_("Couldn't get segment register fs_base"));
68 regcache_raw_supply (regcache, AMD64_FSBASE_REGNUM, &base);
74 if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM)
78 if (ptrace (PT_GETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
79 perror_with_name (_("Couldn't get segment register gs_base"));
81 regcache_raw_supply (regcache, AMD64_GSBASE_REGNUM, &base);
87 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
90 #ifdef PT_GETXSTATE_INFO
93 if (x86bsd_xsave_len != 0)
95 xstateregs = alloca (x86bsd_xsave_len);
96 if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
98 perror_with_name (_("Couldn't get extended state status"));
100 amd64_supply_xsave (regcache, -1, xstateregs);
105 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
106 perror_with_name (_("Couldn't get floating point status"));
108 amd64_supply_fxsave (regcache, -1, &fpregs);
112 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
113 this for all registers (including the floating-point registers). */
116 amd64bsd_store_inferior_registers (struct target_ops *ops,
117 struct regcache *regcache, int regnum)
119 struct gdbarch *gdbarch = regcache->arch ();
120 pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
122 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
126 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
127 perror_with_name (_("Couldn't get registers"));
129 amd64_collect_native_gregset (regcache, ®s, regnum);
131 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
132 perror_with_name (_("Couldn't write registers"));
139 if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM)
143 regcache_raw_collect (regcache, AMD64_FSBASE_REGNUM, &base);
145 if (ptrace (PT_SETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
146 perror_with_name (_("Couldn't write segment register fs_base"));
152 if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM)
156 regcache_raw_collect (regcache, AMD64_GSBASE_REGNUM, &base);
158 if (ptrace (PT_SETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1)
159 perror_with_name (_("Couldn't write segment register gs_base"));
165 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
168 #ifdef PT_GETXSTATE_INFO
171 if (x86bsd_xsave_len != 0)
173 xstateregs = alloca (x86bsd_xsave_len);
174 if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0)
176 perror_with_name (_("Couldn't get extended state status"));
178 amd64_collect_xsave (regcache, regnum, xstateregs, 0);
180 if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs,
181 x86bsd_xsave_len) == -1)
182 perror_with_name (_("Couldn't write extended state status"));
187 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
188 perror_with_name (_("Couldn't get floating point status"));
190 amd64_collect_fxsave (regcache, regnum, &fpregs);
192 if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
193 perror_with_name (_("Couldn't write floating point status"));
197 /* Create a prototype *BSD/amd64 target. The client can override it
198 with local methods. */
201 amd64bsd_target (void)
203 struct target_ops *t;
205 t = x86bsd_target ();
206 t->to_fetch_registers = amd64bsd_fetch_inferior_registers;
207 t->to_store_registers = amd64bsd_store_inferior_registers;