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fa593d66 PA |
1 | /* GNU/Linux/x86-64 specific low level interface, for the in-process |
2 | agent library for GDB. | |
3 | ||
32d0add0 | 4 | Copyright (C) 2010-2015 Free Software Foundation, Inc. |
fa593d66 PA |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "server.h" | |
7c3a12ca | 22 | #include "tracepoint.h" |
fa593d66 PA |
23 | |
24 | /* Defined in auto-generated file amd64-linux.c. */ | |
25 | void init_registers_amd64_linux (void); | |
3aee8918 | 26 | extern const struct target_desc *tdesc_amd64_linux; |
fa593d66 PA |
27 | |
28 | /* fast tracepoints collect registers. */ | |
29 | ||
30 | #define FT_CR_RIP 0 | |
31 | #define FT_CR_EFLAGS 1 | |
32 | #define FT_CR_R8 2 | |
33 | #define FT_CR_R9 3 | |
34 | #define FT_CR_R10 4 | |
35 | #define FT_CR_R11 5 | |
36 | #define FT_CR_R12 6 | |
37 | #define FT_CR_R13 7 | |
38 | #define FT_CR_R14 8 | |
39 | #define FT_CR_R15 9 | |
40 | #define FT_CR_RAX 10 | |
41 | #define FT_CR_RBX 11 | |
42 | #define FT_CR_RCX 12 | |
43 | #define FT_CR_RDX 13 | |
44 | #define FT_CR_RSI 14 | |
45 | #define FT_CR_RDI 15 | |
46 | #define FT_CR_RBP 16 | |
47 | #define FT_CR_RSP 17 | |
48 | ||
49 | static const int x86_64_ft_collect_regmap[] = { | |
50 | FT_CR_RAX * 8, FT_CR_RBX * 8, FT_CR_RCX * 8, FT_CR_RDX * 8, | |
51 | FT_CR_RSI * 8, FT_CR_RDI * 8, FT_CR_RBP * 8, FT_CR_RSP * 8, | |
52 | FT_CR_R8 * 8, FT_CR_R9 * 8, FT_CR_R10 * 8, FT_CR_R11 * 8, | |
53 | FT_CR_R12 * 8, FT_CR_R13 * 8, FT_CR_R14 * 8, FT_CR_R15 * 8, | |
54 | FT_CR_RIP * 8, FT_CR_EFLAGS * 8 | |
55 | }; | |
56 | ||
57 | #define X86_64_NUM_FT_COLLECT_GREGS \ | |
58 | (sizeof (x86_64_ft_collect_regmap) / sizeof(x86_64_ft_collect_regmap[0])) | |
59 | ||
60 | void | |
61 | supply_fast_tracepoint_registers (struct regcache *regcache, | |
62 | const unsigned char *buf) | |
63 | { | |
64 | int i; | |
65 | ||
66 | for (i = 0; i < X86_64_NUM_FT_COLLECT_GREGS; i++) | |
67 | supply_register (regcache, i, | |
68 | ((char *) buf) + x86_64_ft_collect_regmap[i]); | |
69 | } | |
70 | ||
3c14e5a3 | 71 | IP_AGENT_EXPORT_FUNC ULONGEST |
6a271cae PA |
72 | gdb_agent_get_raw_reg (const unsigned char *raw_regs, int regnum) |
73 | { | |
35f5825a | 74 | if (regnum >= X86_64_NUM_FT_COLLECT_GREGS) |
6a271cae PA |
75 | return 0; |
76 | ||
77 | return *(ULONGEST *) (raw_regs + x86_64_ft_collect_regmap[regnum]); | |
78 | } | |
79 | ||
0fb4aa4b PA |
80 | #ifdef HAVE_UST |
81 | ||
82 | #include <ust/processor.h> | |
83 | ||
84 | /* "struct registers" is the UST object type holding the registers at | |
85 | the time of the static tracepoint marker call. This doesn't | |
86 | contain RIP, but we know what it must have been (the marker | |
87 | address). */ | |
88 | ||
89 | #define ST_REGENTRY(REG) \ | |
90 | { \ | |
91 | offsetof (struct registers, REG), \ | |
92 | sizeof (((struct registers *) NULL)->REG) \ | |
93 | } | |
94 | ||
95 | static struct | |
96 | { | |
97 | int offset; | |
98 | int size; | |
99 | } x86_64_st_collect_regmap[] = | |
100 | { | |
101 | ST_REGENTRY(rax), | |
102 | ST_REGENTRY(rbx), | |
103 | ST_REGENTRY(rcx), | |
104 | ST_REGENTRY(rdx), | |
105 | ST_REGENTRY(rsi), | |
106 | ST_REGENTRY(rdi), | |
107 | ST_REGENTRY(rbp), | |
108 | ST_REGENTRY(rsp), | |
109 | ST_REGENTRY(r8), | |
110 | ST_REGENTRY(r9), | |
111 | ST_REGENTRY(r10), | |
112 | ST_REGENTRY(r11), | |
113 | ST_REGENTRY(r12), | |
114 | ST_REGENTRY(r13), | |
115 | ST_REGENTRY(r14), | |
116 | ST_REGENTRY(r15), | |
117 | { -1, 0 }, | |
118 | ST_REGENTRY(rflags), | |
119 | ST_REGENTRY(cs), | |
120 | ST_REGENTRY(ss), | |
121 | }; | |
122 | ||
123 | #define X86_64_NUM_ST_COLLECT_GREGS \ | |
124 | (sizeof (x86_64_st_collect_regmap) / sizeof (x86_64_st_collect_regmap[0])) | |
125 | ||
126 | /* GDB's RIP register number. */ | |
127 | #define AMD64_RIP_REGNUM 16 | |
128 | ||
129 | void | |
130 | supply_static_tracepoint_registers (struct regcache *regcache, | |
131 | const unsigned char *buf, | |
132 | CORE_ADDR pc) | |
133 | { | |
134 | int i; | |
135 | unsigned long newpc = pc; | |
136 | ||
137 | supply_register (regcache, AMD64_RIP_REGNUM, &newpc); | |
138 | ||
139 | for (i = 0; i < X86_64_NUM_ST_COLLECT_GREGS; i++) | |
140 | if (x86_64_st_collect_regmap[i].offset != -1) | |
141 | { | |
142 | switch (x86_64_st_collect_regmap[i].size) | |
143 | { | |
144 | case 8: | |
145 | supply_register (regcache, i, | |
146 | ((char *) buf) | |
147 | + x86_64_st_collect_regmap[i].offset); | |
148 | break; | |
149 | case 2: | |
150 | { | |
151 | unsigned long reg | |
152 | = * (short *) (((char *) buf) | |
153 | + x86_64_st_collect_regmap[i].offset); | |
154 | reg &= 0xffff; | |
155 | supply_register (regcache, i, ®); | |
156 | } | |
157 | break; | |
158 | default: | |
159 | internal_error (__FILE__, __LINE__, | |
160 | "unhandled register size: %d", | |
161 | x86_64_st_collect_regmap[i].size); | |
162 | break; | |
163 | } | |
164 | } | |
165 | } | |
166 | ||
167 | #endif /* HAVE_UST */ | |
168 | ||
fa593d66 PA |
169 | void |
170 | initialize_low_tracepoint (void) | |
171 | { | |
172 | init_registers_amd64_linux (); | |
3aee8918 | 173 | ipa_tdesc = tdesc_amd64_linux; |
fa593d66 | 174 | } |