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cced5e27 MK |
1 | /* Native-dependent code for AMD64 BSD's. |
2 | ||
b811d2c2 | 3 | Copyright (C) 2003-2020 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" |
9e38d619 | 36 | #include "amd64-bsd-nat.h" |
cced5e27 MK |
37 | \f |
38 | ||
39 | /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this | |
40 | for all registers (including the floating-point registers). */ | |
41 | ||
f6ac5f3d PA |
42 | void |
43 | amd64bsd_fetch_inferior_registers (struct regcache *regcache, int regnum) | |
cced5e27 | 44 | { |
ac7936df | 45 | struct gdbarch *gdbarch = regcache->arch (); |
222312d3 | 46 | pid_t pid = get_ptrace_pid (regcache->ptid ()); |
dd6876c9 JB |
47 | #if defined(PT_GETFSBASE) || defined(PT_GETGSBASE) |
48 | const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
49 | #endif | |
f8028488 MD |
50 | |
51 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
cced5e27 MK |
52 | { |
53 | struct reg regs; | |
54 | ||
49907934 | 55 | if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 56 | perror_with_name (_("Couldn't get registers")); |
cced5e27 | 57 | |
56be3814 | 58 | amd64_supply_native_gregset (regcache, ®s, -1); |
cced5e27 MK |
59 | if (regnum != -1) |
60 | return; | |
61 | } | |
62 | ||
0aa37b65 | 63 | #ifdef PT_GETFSBASE |
dd6876c9 | 64 | if (regnum == -1 || regnum == tdep->fsbase_regnum) |
0aa37b65 JB |
65 | { |
66 | register_t base; | |
67 | ||
68 | if (ptrace (PT_GETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
69 | perror_with_name (_("Couldn't get segment register fs_base")); | |
70 | ||
dd6876c9 | 71 | regcache->raw_supply (tdep->fsbase_regnum, &base); |
0aa37b65 JB |
72 | if (regnum != -1) |
73 | return; | |
74 | } | |
75 | #endif | |
76 | #ifdef PT_GETGSBASE | |
dd6876c9 | 77 | if (regnum == -1 || regnum == tdep->fsbase_regnum + 1) |
0aa37b65 JB |
78 | { |
79 | register_t base; | |
80 | ||
81 | if (ptrace (PT_GETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
82 | perror_with_name (_("Couldn't get segment register gs_base")); | |
83 | ||
dd6876c9 | 84 | regcache->raw_supply (tdep->fsbase_regnum + 1, &base); |
0aa37b65 JB |
85 | if (regnum != -1) |
86 | return; | |
87 | } | |
88 | #endif | |
89 | ||
f8028488 | 90 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
cced5e27 MK |
91 | { |
92 | struct fpreg fpregs; | |
97de3545 | 93 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 94 | void *xstateregs; |
97de3545 | 95 | |
a3405d12 | 96 | if (x86bsd_xsave_len != 0) |
97de3545 | 97 | { |
a3405d12 | 98 | xstateregs = alloca (x86bsd_xsave_len); |
49907934 JB |
99 | if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0) |
100 | == -1) | |
97de3545 JB |
101 | perror_with_name (_("Couldn't get extended state status")); |
102 | ||
103 | amd64_supply_xsave (regcache, -1, xstateregs); | |
104 | return; | |
105 | } | |
106 | #endif | |
cced5e27 | 107 | |
49907934 | 108 | if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 109 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 110 | |
56be3814 | 111 | amd64_supply_fxsave (regcache, -1, &fpregs); |
cced5e27 MK |
112 | } |
113 | } | |
114 | ||
115 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do | |
116 | this for all registers (including the floating-point registers). */ | |
117 | ||
f6ac5f3d PA |
118 | void |
119 | amd64bsd_store_inferior_registers (struct regcache *regcache, int regnum) | |
cced5e27 | 120 | { |
ac7936df | 121 | struct gdbarch *gdbarch = regcache->arch (); |
222312d3 | 122 | pid_t pid = get_ptrace_pid (regcache->ptid ()); |
dd6876c9 JB |
123 | #if defined(PT_SETFSBASE) || defined(PT_SETGSBASE) |
124 | const struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
125 | #endif | |
f8028488 MD |
126 | |
127 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
cced5e27 MK |
128 | { |
129 | struct reg regs; | |
130 | ||
49907934 | 131 | if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 132 | perror_with_name (_("Couldn't get registers")); |
cced5e27 | 133 | |
56be3814 | 134 | amd64_collect_native_gregset (regcache, ®s, regnum); |
cced5e27 | 135 | |
49907934 | 136 | if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 137 | perror_with_name (_("Couldn't write registers")); |
cced5e27 MK |
138 | |
139 | if (regnum != -1) | |
140 | return; | |
141 | } | |
142 | ||
0aa37b65 | 143 | #ifdef PT_SETFSBASE |
dd6876c9 | 144 | if (regnum == -1 || regnum == tdep->fsbase_regnum) |
0aa37b65 JB |
145 | { |
146 | register_t base; | |
147 | ||
dd6876c9 JB |
148 | /* Clear the full base value to support 32-bit targets. */ |
149 | base = 0; | |
150 | regcache->raw_collect (tdep->fsbase_regnum, &base); | |
0aa37b65 JB |
151 | |
152 | if (ptrace (PT_SETFSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
153 | perror_with_name (_("Couldn't write segment register fs_base")); | |
154 | if (regnum != -1) | |
155 | return; | |
156 | } | |
157 | #endif | |
158 | #ifdef PT_SETGSBASE | |
dd6876c9 | 159 | if (regnum == -1 || regnum == tdep->fsbase_regnum + 1) |
0aa37b65 JB |
160 | { |
161 | register_t base; | |
162 | ||
dd6876c9 JB |
163 | /* Clear the full base value to support 32-bit targets. */ |
164 | base = 0; | |
165 | regcache->raw_collect (tdep->fsbase_regnum + 1, &base); | |
0aa37b65 JB |
166 | |
167 | if (ptrace (PT_SETGSBASE, pid, (PTRACE_TYPE_ARG3) &base, 0) == -1) | |
168 | perror_with_name (_("Couldn't write segment register gs_base")); | |
169 | if (regnum != -1) | |
170 | return; | |
171 | } | |
172 | #endif | |
173 | ||
f8028488 | 174 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
cced5e27 MK |
175 | { |
176 | struct fpreg fpregs; | |
97de3545 | 177 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 178 | void *xstateregs; |
97de3545 | 179 | |
a3405d12 | 180 | if (x86bsd_xsave_len != 0) |
97de3545 | 181 | { |
a3405d12 | 182 | xstateregs = alloca (x86bsd_xsave_len); |
49907934 JB |
183 | if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0) |
184 | == -1) | |
97de3545 JB |
185 | perror_with_name (_("Couldn't get extended state status")); |
186 | ||
187 | amd64_collect_xsave (regcache, regnum, xstateregs, 0); | |
188 | ||
49907934 JB |
189 | if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, |
190 | x86bsd_xsave_len) == -1) | |
97de3545 JB |
191 | perror_with_name (_("Couldn't write extended state status")); |
192 | return; | |
193 | } | |
194 | #endif | |
cced5e27 | 195 | |
49907934 | 196 | if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 197 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 198 | |
56be3814 | 199 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
cced5e27 | 200 | |
49907934 | 201 | if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 202 | perror_with_name (_("Couldn't write floating point status")); |
cced5e27 MK |
203 | } |
204 | } |