Commit | Line | Data |
---|---|---|
cced5e27 MK |
1 | /* Native-dependent code for AMD64 BSD's. |
2 | ||
e2882c85 | 3 | Copyright (C) 2003-2018 Free Software Foundation, Inc. |
cced5e27 MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
cced5e27 MK |
10 | (at your option) any later version. |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
cced5e27 MK |
19 | |
20 | #include "defs.h" | |
21 | #include "inferior.h" | |
22 | #include "regcache.h" | |
6a5c78a3 | 23 | #include "target.h" |
cced5e27 MK |
24 | |
25 | /* We include <signal.h> to make sure `struct fxsave64' is defined on | |
26 | NetBSD, since NetBSD's <machine/reg.h> needs it. */ | |
cced5e27 MK |
27 | #include <signal.h> |
28 | #include <sys/types.h> | |
29 | #include <sys/ptrace.h> | |
30 | #include <machine/reg.h> | |
31 | ||
85be1ca6 | 32 | #include "amd64-tdep.h" |
cced5e27 | 33 | #include "amd64-nat.h" |
03b62bbb | 34 | #include "x86-bsd-nat.h" |
6a5c78a3 | 35 | #include "inf-ptrace.h" |
cced5e27 MK |
36 | \f |
37 | ||
38 | /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this | |
39 | for all registers (including the floating-point registers). */ | |
40 | ||
6a5c78a3 | 41 | static void |
28439f5e PA |
42 | amd64bsd_fetch_inferior_registers (struct target_ops *ops, |
43 | struct regcache *regcache, int regnum) | |
cced5e27 | 44 | { |
ac7936df | 45 | struct gdbarch *gdbarch = regcache->arch (); |
49907934 | 46 | pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); |
f8028488 MD |
47 | |
48 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
cced5e27 MK |
49 | { |
50 | struct reg regs; | |
51 | ||
49907934 | 52 | if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 53 | perror_with_name (_("Couldn't get registers")); |
cced5e27 | 54 | |
56be3814 | 55 | amd64_supply_native_gregset (regcache, ®s, -1); |
cced5e27 MK |
56 | if (regnum != -1) |
57 | return; | |
58 | } | |
59 | ||
0aa37b65 JB |
60 | #ifdef PT_GETFSBASE |
61 | if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM) | |
62 | { | |
63 | register_t base; | |
64 | ||
65 | if (ptrace (PT_GETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
66 | perror_with_name (_("Couldn't get segment register fs_base")); | |
67 | ||
68 | regcache_raw_supply (regcache, AMD64_FSBASE_REGNUM, &base); | |
69 | if (regnum != -1) | |
70 | return; | |
71 | } | |
72 | #endif | |
73 | #ifdef PT_GETGSBASE | |
74 | if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM) | |
75 | { | |
76 | register_t base; | |
77 | ||
78 | if (ptrace (PT_GETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
79 | perror_with_name (_("Couldn't get segment register gs_base")); | |
80 | ||
81 | regcache_raw_supply (regcache, AMD64_GSBASE_REGNUM, &base); | |
82 | if (regnum != -1) | |
83 | return; | |
84 | } | |
85 | #endif | |
86 | ||
f8028488 | 87 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
cced5e27 MK |
88 | { |
89 | struct fpreg fpregs; | |
97de3545 | 90 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 91 | void *xstateregs; |
97de3545 | 92 | |
a3405d12 | 93 | if (x86bsd_xsave_len != 0) |
97de3545 | 94 | { |
a3405d12 | 95 | xstateregs = alloca (x86bsd_xsave_len); |
49907934 JB |
96 | if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0) |
97 | == -1) | |
97de3545 JB |
98 | perror_with_name (_("Couldn't get extended state status")); |
99 | ||
100 | amd64_supply_xsave (regcache, -1, xstateregs); | |
101 | return; | |
102 | } | |
103 | #endif | |
cced5e27 | 104 | |
49907934 | 105 | if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 106 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 107 | |
56be3814 | 108 | amd64_supply_fxsave (regcache, -1, &fpregs); |
cced5e27 MK |
109 | } |
110 | } | |
111 | ||
112 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do | |
113 | this for all registers (including the floating-point registers). */ | |
114 | ||
6a5c78a3 | 115 | static void |
28439f5e PA |
116 | amd64bsd_store_inferior_registers (struct target_ops *ops, |
117 | struct regcache *regcache, int regnum) | |
cced5e27 | 118 | { |
ac7936df | 119 | struct gdbarch *gdbarch = regcache->arch (); |
49907934 | 120 | pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); |
f8028488 MD |
121 | |
122 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
cced5e27 MK |
123 | { |
124 | struct reg regs; | |
125 | ||
49907934 | 126 | if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 127 | perror_with_name (_("Couldn't get registers")); |
cced5e27 | 128 | |
56be3814 | 129 | amd64_collect_native_gregset (regcache, ®s, regnum); |
cced5e27 | 130 | |
49907934 | 131 | if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 132 | perror_with_name (_("Couldn't write registers")); |
cced5e27 MK |
133 | |
134 | if (regnum != -1) | |
135 | return; | |
136 | } | |
137 | ||
0aa37b65 JB |
138 | #ifdef PT_SETFSBASE |
139 | if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM) | |
140 | { | |
141 | register_t base; | |
142 | ||
143 | regcache_raw_collect (regcache, AMD64_FSBASE_REGNUM, &base); | |
144 | ||
145 | if (ptrace (PT_SETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
146 | perror_with_name (_("Couldn't write segment register fs_base")); | |
147 | if (regnum != -1) | |
148 | return; | |
149 | } | |
150 | #endif | |
151 | #ifdef PT_SETGSBASE | |
152 | if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM) | |
153 | { | |
154 | register_t base; | |
155 | ||
156 | regcache_raw_collect (regcache, AMD64_GSBASE_REGNUM, &base); | |
157 | ||
158 | if (ptrace (PT_SETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
159 | perror_with_name (_("Couldn't write segment register gs_base")); | |
160 | if (regnum != -1) | |
161 | return; | |
162 | } | |
163 | #endif | |
164 | ||
f8028488 | 165 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
cced5e27 MK |
166 | { |
167 | struct fpreg fpregs; | |
97de3545 | 168 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 169 | void *xstateregs; |
97de3545 | 170 | |
a3405d12 | 171 | if (x86bsd_xsave_len != 0) |
97de3545 | 172 | { |
a3405d12 | 173 | xstateregs = alloca (x86bsd_xsave_len); |
49907934 JB |
174 | if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0) |
175 | == -1) | |
97de3545 JB |
176 | perror_with_name (_("Couldn't get extended state status")); |
177 | ||
178 | amd64_collect_xsave (regcache, regnum, xstateregs, 0); | |
179 | ||
49907934 JB |
180 | if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, |
181 | x86bsd_xsave_len) == -1) | |
97de3545 JB |
182 | perror_with_name (_("Couldn't write extended state status")); |
183 | return; | |
184 | } | |
185 | #endif | |
cced5e27 | 186 | |
49907934 | 187 | if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 188 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 189 | |
56be3814 | 190 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
cced5e27 | 191 | |
49907934 | 192 | if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 193 | perror_with_name (_("Couldn't write floating point status")); |
cced5e27 MK |
194 | } |
195 | } | |
6a5c78a3 MK |
196 | |
197 | /* Create a prototype *BSD/amd64 target. The client can override it | |
198 | with local methods. */ | |
199 | ||
200 | struct target_ops * | |
201 | amd64bsd_target (void) | |
202 | { | |
203 | struct target_ops *t; | |
204 | ||
a3405d12 | 205 | t = x86bsd_target (); |
6a5c78a3 MK |
206 | t->to_fetch_registers = amd64bsd_fetch_inferior_registers; |
207 | t->to_store_registers = amd64bsd_store_inferior_registers; | |
208 | return t; | |
209 | } |