1 /* GNU/Linux/AArch64 specific low level interface, for the in-process
4 Copyright (C) 2015 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"
24 /* Defined in auto-generated file aarch64.c. */
25 void init_registers_aarch64 (void);
26 extern const struct target_desc
*tdesc_aarch64
;
28 /* Each register saved by the jump pad is in a 16 byte cell. */
37 #define FT_CR_GPR(n) (FT_CR_X0 + (n))
38 #define FT_CR_FPR(n) (FT_CR_GPR (31) + (n))
40 /* Mapping between registers collected by the jump pad and GDB's register
41 array layout used by regcache.
43 See linux-aarch64-low.c (aarch64_install_fast_tracepoint_jump_pad) for
46 static const int aarch64_ft_collect_regmap
[] = {
119 #define AARCH64_NUM_FT_COLLECT_GREGS \
120 (sizeof (aarch64_ft_collect_regmap) / sizeof(aarch64_ft_collect_regmap[0]))
122 /* Fill in REGCACHE with registers saved by the jump pad in BUF. */
125 supply_fast_tracepoint_registers (struct regcache
*regcache
,
126 const unsigned char *buf
)
130 for (i
= 0; i
< AARCH64_NUM_FT_COLLECT_GREGS
; i
++)
131 supply_register (regcache
, i
,
133 + (aarch64_ft_collect_regmap
[i
] * FT_CR_SIZE
));
136 IP_AGENT_EXPORT_FUNC ULONGEST
137 gdb_agent_get_raw_reg (const unsigned char *raw_regs
, int regnum
)
139 if (regnum
>= AARCH64_NUM_FT_COLLECT_GREGS
)
142 return *(ULONGEST
*) (raw_regs
143 + aarch64_ft_collect_regmap
[regnum
] * FT_CR_SIZE
);
147 initialize_low_tracepoint (void)
149 init_registers_aarch64 ();
150 ipa_tdesc
= tdesc_aarch64
;