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cced5e27 MK |
1 | /* Native-dependent code for AMD64 BSD's. |
2 | ||
61baf725 | 3 | Copyright (C) 2003-2017 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/>. */ |
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19 | |
20 | #include "defs.h" | |
21 | #include "inferior.h" | |
22 | #include "regcache.h" | |
6a5c78a3 | 23 | #include "target.h" |
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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" |
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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 | { |
f8028488 MD |
45 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
46 | ||
47 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
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48 | { |
49 | struct reg regs; | |
50 | ||
94309df7 | 51 | if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid), |
9f8e0089 | 52 | (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); |
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56 | if (regnum != -1) |
57 | return; | |
58 | } | |
59 | ||
f8028488 | 60 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
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61 | { |
62 | struct fpreg fpregs; | |
97de3545 | 63 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 64 | void *xstateregs; |
97de3545 | 65 | |
a3405d12 | 66 | if (x86bsd_xsave_len != 0) |
97de3545 | 67 | { |
a3405d12 | 68 | xstateregs = alloca (x86bsd_xsave_len); |
94309df7 | 69 | if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid), |
97de3545 JB |
70 | (PTRACE_TYPE_ARG3) xstateregs, 0) == -1) |
71 | perror_with_name (_("Couldn't get extended state status")); | |
72 | ||
73 | amd64_supply_xsave (regcache, -1, xstateregs); | |
74 | return; | |
75 | } | |
76 | #endif | |
cced5e27 | 77 | |
94309df7 | 78 | if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), |
9f8e0089 | 79 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 80 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 81 | |
56be3814 | 82 | amd64_supply_fxsave (regcache, -1, &fpregs); |
cced5e27 MK |
83 | } |
84 | } | |
85 | ||
86 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do | |
87 | this for all registers (including the floating-point registers). */ | |
88 | ||
6a5c78a3 | 89 | static void |
28439f5e PA |
90 | amd64bsd_store_inferior_registers (struct target_ops *ops, |
91 | struct regcache *regcache, int regnum) | |
cced5e27 | 92 | { |
f8028488 MD |
93 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
94 | ||
95 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
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96 | { |
97 | struct reg regs; | |
98 | ||
94309df7 | 99 | if (ptrace (PT_GETREGS, get_ptrace_pid (inferior_ptid), |
9f8e0089 | 100 | (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 101 | perror_with_name (_("Couldn't get registers")); |
cced5e27 | 102 | |
56be3814 | 103 | amd64_collect_native_gregset (regcache, ®s, regnum); |
cced5e27 | 104 | |
94309df7 | 105 | if (ptrace (PT_SETREGS, get_ptrace_pid (inferior_ptid), |
9f8e0089 | 106 | (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 107 | perror_with_name (_("Couldn't write registers")); |
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108 | |
109 | if (regnum != -1) | |
110 | return; | |
111 | } | |
112 | ||
f8028488 | 113 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
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114 | { |
115 | struct fpreg fpregs; | |
97de3545 | 116 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 117 | void *xstateregs; |
97de3545 | 118 | |
a3405d12 | 119 | if (x86bsd_xsave_len != 0) |
97de3545 | 120 | { |
a3405d12 | 121 | xstateregs = alloca (x86bsd_xsave_len); |
94309df7 | 122 | if (ptrace (PT_GETXSTATE, get_ptrace_pid (inferior_ptid), |
97de3545 JB |
123 | (PTRACE_TYPE_ARG3) xstateregs, 0) == -1) |
124 | perror_with_name (_("Couldn't get extended state status")); | |
125 | ||
126 | amd64_collect_xsave (regcache, regnum, xstateregs, 0); | |
127 | ||
94309df7 | 128 | if (ptrace (PT_SETXSTATE, get_ptrace_pid (inferior_ptid), |
a3405d12 | 129 | (PTRACE_TYPE_ARG3) xstateregs, x86bsd_xsave_len) == -1) |
97de3545 JB |
130 | perror_with_name (_("Couldn't write extended state status")); |
131 | return; | |
132 | } | |
133 | #endif | |
cced5e27 | 134 | |
94309df7 | 135 | if (ptrace (PT_GETFPREGS, get_ptrace_pid (inferior_ptid), |
9f8e0089 | 136 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 137 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 138 | |
56be3814 | 139 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
cced5e27 | 140 | |
94309df7 | 141 | if (ptrace (PT_SETFPREGS, get_ptrace_pid (inferior_ptid), |
9f8e0089 | 142 | (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 143 | perror_with_name (_("Couldn't write floating point status")); |
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144 | } |
145 | } | |
6a5c78a3 MK |
146 | |
147 | /* Create a prototype *BSD/amd64 target. The client can override it | |
148 | with local methods. */ | |
149 | ||
150 | struct target_ops * | |
151 | amd64bsd_target (void) | |
152 | { | |
153 | struct target_ops *t; | |
154 | ||
a3405d12 | 155 | t = x86bsd_target (); |
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156 | t->to_fetch_registers = amd64bsd_fetch_inferior_registers; |
157 | t->to_store_registers = amd64bsd_store_inferior_registers; | |
158 | return t; | |
159 | } |