| /* GNU/Linux/AArch64 specific low level interface, for the in-process |
| agent library for GDB. |
| |
| Copyright (C) 2015 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "server.h" |
| #include "tracepoint.h" |
| |
| /* Defined in auto-generated file aarch64.c. */ |
| void init_registers_aarch64 (void); |
| extern const struct target_desc *tdesc_aarch64; |
| |
| /* Each register saved by the jump pad is in a 16 byte cell. */ |
| #define FT_CR_SIZE 16 |
| |
| #define FT_CR_FPCR 0 |
| #define FT_CR_FPSR 1 |
| #define FT_CR_CPSR 2 |
| #define FT_CR_PC 3 |
| #define FT_CR_SP 4 |
| #define FT_CR_X0 5 |
| #define FT_CR_GPR(n) (FT_CR_X0 + (n)) |
| #define FT_CR_FPR(n) (FT_CR_GPR (31) + (n)) |
| |
| /* Mapping between registers collected by the jump pad and GDB's register |
| array layout used by regcache. |
| |
| See linux-aarch64-low.c (aarch64_install_fast_tracepoint_jump_pad) for |
| more details. */ |
| |
| static const int aarch64_ft_collect_regmap[] = { |
| FT_CR_GPR (0), |
| FT_CR_GPR (1), |
| FT_CR_GPR (2), |
| FT_CR_GPR (3), |
| FT_CR_GPR (4), |
| FT_CR_GPR (5), |
| FT_CR_GPR (6), |
| FT_CR_GPR (7), |
| FT_CR_GPR (8), |
| FT_CR_GPR (9), |
| FT_CR_GPR (10), |
| FT_CR_GPR (11), |
| FT_CR_GPR (12), |
| FT_CR_GPR (13), |
| FT_CR_GPR (14), |
| FT_CR_GPR (15), |
| FT_CR_GPR (16), |
| FT_CR_GPR (17), |
| FT_CR_GPR (18), |
| FT_CR_GPR (19), |
| FT_CR_GPR (20), |
| FT_CR_GPR (21), |
| FT_CR_GPR (22), |
| FT_CR_GPR (23), |
| FT_CR_GPR (24), |
| FT_CR_GPR (25), |
| FT_CR_GPR (26), |
| FT_CR_GPR (27), |
| FT_CR_GPR (28), |
| /* FP */ |
| FT_CR_GPR (29), |
| /* LR */ |
| FT_CR_GPR (30), |
| FT_CR_SP, |
| FT_CR_PC, |
| FT_CR_CPSR, |
| FT_CR_FPR (0), |
| FT_CR_FPR (1), |
| FT_CR_FPR (2), |
| FT_CR_FPR (3), |
| FT_CR_FPR (4), |
| FT_CR_FPR (5), |
| FT_CR_FPR (6), |
| FT_CR_FPR (7), |
| FT_CR_FPR (8), |
| FT_CR_FPR (9), |
| FT_CR_FPR (10), |
| FT_CR_FPR (11), |
| FT_CR_FPR (12), |
| FT_CR_FPR (13), |
| FT_CR_FPR (14), |
| FT_CR_FPR (15), |
| FT_CR_FPR (16), |
| FT_CR_FPR (17), |
| FT_CR_FPR (18), |
| FT_CR_FPR (19), |
| FT_CR_FPR (20), |
| FT_CR_FPR (21), |
| FT_CR_FPR (22), |
| FT_CR_FPR (23), |
| FT_CR_FPR (24), |
| FT_CR_FPR (25), |
| FT_CR_FPR (26), |
| FT_CR_FPR (27), |
| FT_CR_FPR (28), |
| FT_CR_FPR (29), |
| FT_CR_FPR (30), |
| FT_CR_FPR (31), |
| FT_CR_FPSR, |
| FT_CR_FPCR |
| }; |
| |
| #define AARCH64_NUM_FT_COLLECT_GREGS \ |
| (sizeof (aarch64_ft_collect_regmap) / sizeof(aarch64_ft_collect_regmap[0])) |
| |
| /* Fill in REGCACHE with registers saved by the jump pad in BUF. */ |
| |
| void |
| supply_fast_tracepoint_registers (struct regcache *regcache, |
| const unsigned char *buf) |
| { |
| int i; |
| |
| for (i = 0; i < AARCH64_NUM_FT_COLLECT_GREGS; i++) |
| supply_register (regcache, i, |
| ((char *) buf) |
| + (aarch64_ft_collect_regmap[i] * FT_CR_SIZE)); |
| } |
| |
| IP_AGENT_EXPORT_FUNC ULONGEST |
| gdb_agent_get_raw_reg (const unsigned char *raw_regs, int regnum) |
| { |
| if (regnum >= AARCH64_NUM_FT_COLLECT_GREGS) |
| return 0; |
| |
| return *(ULONGEST *) (raw_regs |
| + aarch64_ft_collect_regmap[regnum] * FT_CR_SIZE); |
| } |
| |
| void |
| initialize_low_tracepoint (void) |
| { |
| init_registers_aarch64 (); |
| ipa_tdesc = tdesc_aarch64; |
| } |