1 /* GNU/Linux/x86-64 specific low level interface, for the in-process
4 Copyright (C) 2010-2016 Free Software Foundation, Inc.
6 This file is part of GDB.
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.
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.
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/>. */
22 #include "tracepoint.h"
23 #include "linux-x86-tdesc.h"
25 /* Defined in auto-generated file amd64-linux.c. */
26 void init_registers_amd64_linux (void);
27 extern const struct target_desc
*tdesc_amd64_linux
;
29 /* fast tracepoints collect registers. */
32 #define FT_CR_EFLAGS 1
50 static const int x86_64_ft_collect_regmap
[] = {
51 FT_CR_RAX
* 8, FT_CR_RBX
* 8, FT_CR_RCX
* 8, FT_CR_RDX
* 8,
52 FT_CR_RSI
* 8, FT_CR_RDI
* 8, FT_CR_RBP
* 8, FT_CR_RSP
* 8,
53 FT_CR_R8
* 8, FT_CR_R9
* 8, FT_CR_R10
* 8, FT_CR_R11
* 8,
54 FT_CR_R12
* 8, FT_CR_R13
* 8, FT_CR_R14
* 8, FT_CR_R15
* 8,
55 FT_CR_RIP
* 8, FT_CR_EFLAGS
* 8
58 #define X86_64_NUM_FT_COLLECT_GREGS \
59 (sizeof (x86_64_ft_collect_regmap) / sizeof(x86_64_ft_collect_regmap[0]))
62 supply_fast_tracepoint_registers (struct regcache
*regcache
,
63 const unsigned char *buf
)
67 for (i
= 0; i
< X86_64_NUM_FT_COLLECT_GREGS
; i
++)
68 supply_register (regcache
, i
,
69 ((char *) buf
) + x86_64_ft_collect_regmap
[i
]);
72 IP_AGENT_EXPORT_FUNC ULONGEST
73 gdb_agent_get_raw_reg (const unsigned char *raw_regs
, int regnum
)
75 if (regnum
>= X86_64_NUM_FT_COLLECT_GREGS
)
78 return *(ULONGEST
*) (raw_regs
+ x86_64_ft_collect_regmap
[regnum
]);
83 #include <ust/processor.h>
85 /* "struct registers" is the UST object type holding the registers at
86 the time of the static tracepoint marker call. This doesn't
87 contain RIP, but we know what it must have been (the marker
90 #define ST_REGENTRY(REG) \
92 offsetof (struct registers, REG), \
93 sizeof (((struct registers *) NULL)->REG) \
100 } x86_64_st_collect_regmap
[] =
124 #define X86_64_NUM_ST_COLLECT_GREGS \
125 (sizeof (x86_64_st_collect_regmap) / sizeof (x86_64_st_collect_regmap[0]))
127 /* GDB's RIP register number. */
128 #define AMD64_RIP_REGNUM 16
131 supply_static_tracepoint_registers (struct regcache
*regcache
,
132 const unsigned char *buf
,
136 unsigned long newpc
= pc
;
138 supply_register (regcache
, AMD64_RIP_REGNUM
, &newpc
);
140 for (i
= 0; i
< X86_64_NUM_ST_COLLECT_GREGS
; i
++)
141 if (x86_64_st_collect_regmap
[i
].offset
!= -1)
143 switch (x86_64_st_collect_regmap
[i
].size
)
146 supply_register (regcache
, i
,
148 + x86_64_st_collect_regmap
[i
].offset
);
153 = * (short *) (((char *) buf
)
154 + x86_64_st_collect_regmap
[i
].offset
);
156 supply_register (regcache
, i
, ®
);
160 internal_error (__FILE__
, __LINE__
,
161 "unhandled register size: %d",
162 x86_64_st_collect_regmap
[i
].size
);
168 #endif /* HAVE_UST */
170 /* Return target_desc to use for IPA, given the tdesc index passed by
173 const struct target_desc
*
174 get_ipa_tdesc (int idx
)
179 return tdesc_amd64_linux
;
181 return tdesc_amd64_avx_linux
;
183 return tdesc_amd64_mpx_linux
;
184 case X86_TDESC_AVX512
:
185 return tdesc_amd64_avx512_linux
;
187 internal_error (__FILE__
, __LINE__
,
188 "unknown ipa tdesc index: %d", idx
);
189 return tdesc_amd64_linux
;
194 initialize_low_tracepoint (void)
196 init_registers_amd64_linux ();
197 init_registers_amd64_avx_linux ();
198 init_registers_amd64_mpx_linux ();
199 init_registers_amd64_avx512_linux ();