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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 | 45 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
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 | ||
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); |
49907934 JB |
69 | if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0) |
70 | == -1) | |
97de3545 JB |
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 | |
49907934 | 78 | if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 79 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 80 | |
56be3814 | 81 | amd64_supply_fxsave (regcache, -1, &fpregs); |
cced5e27 MK |
82 | } |
83 | } | |
84 | ||
85 | /* Store register REGNUM back into the inferior. If REGNUM is -1, do | |
86 | this for all registers (including the floating-point registers). */ | |
87 | ||
6a5c78a3 | 88 | static void |
28439f5e PA |
89 | amd64bsd_store_inferior_registers (struct target_ops *ops, |
90 | struct regcache *regcache, int regnum) | |
cced5e27 | 91 | { |
f8028488 | 92 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
49907934 | 93 | pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache)); |
f8028488 MD |
94 | |
95 | if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) | |
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96 | { |
97 | struct reg regs; | |
98 | ||
49907934 | 99 | if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 100 | perror_with_name (_("Couldn't get registers")); |
cced5e27 | 101 | |
56be3814 | 102 | amd64_collect_native_gregset (regcache, ®s, regnum); |
cced5e27 | 103 | |
49907934 | 104 | if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) |
edefbb7c | 105 | perror_with_name (_("Couldn't write registers")); |
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106 | |
107 | if (regnum != -1) | |
108 | return; | |
109 | } | |
110 | ||
f8028488 | 111 | if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) |
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112 | { |
113 | struct fpreg fpregs; | |
97de3545 | 114 | #ifdef PT_GETXSTATE_INFO |
21002a63 | 115 | void *xstateregs; |
97de3545 | 116 | |
a3405d12 | 117 | if (x86bsd_xsave_len != 0) |
97de3545 | 118 | { |
a3405d12 | 119 | xstateregs = alloca (x86bsd_xsave_len); |
49907934 JB |
120 | if (ptrace (PT_GETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, 0) |
121 | == -1) | |
97de3545 JB |
122 | perror_with_name (_("Couldn't get extended state status")); |
123 | ||
124 | amd64_collect_xsave (regcache, regnum, xstateregs, 0); | |
125 | ||
49907934 JB |
126 | if (ptrace (PT_SETXSTATE, pid, (PTRACE_TYPE_ARG3) xstateregs, |
127 | x86bsd_xsave_len) == -1) | |
97de3545 JB |
128 | perror_with_name (_("Couldn't write extended state status")); |
129 | return; | |
130 | } | |
131 | #endif | |
cced5e27 | 132 | |
49907934 | 133 | if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 134 | perror_with_name (_("Couldn't get floating point status")); |
cced5e27 | 135 | |
56be3814 | 136 | amd64_collect_fxsave (regcache, regnum, &fpregs); |
cced5e27 | 137 | |
49907934 | 138 | if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) |
edefbb7c | 139 | perror_with_name (_("Couldn't write floating point status")); |
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140 | } |
141 | } | |
6a5c78a3 MK |
142 | |
143 | /* Create a prototype *BSD/amd64 target. The client can override it | |
144 | with local methods. */ | |
145 | ||
146 | struct target_ops * | |
147 | amd64bsd_target (void) | |
148 | { | |
149 | struct target_ops *t; | |
150 | ||
a3405d12 | 151 | t = x86bsd_target (); |
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152 | t->to_fetch_registers = amd64bsd_fetch_inferior_registers; |
153 | t->to_store_registers = amd64bsd_store_inferior_registers; | |
154 | return t; | |
155 | } |