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| author | Yao Qi <yao.qi@linaro.org> | 2015-10-12 11:28:38 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2015-10-12 11:28:38 +0100 |
| commit | b6542f81d0894d69e7f12a73b94bf4adead75a5c (patch) | |
| tree | 931e149e5215f28a2536c30dff6d66016de34beb /gdb/aarch64-tdep.h | |
| parent | 246994ce350923199a4c952b38dcee5bcbe8c554 (diff) | |
| download | binutils-gdb-b6542f81d0894d69e7f12a73b94bf4adead75a5c.tar.gz | |
Support displaced stepping in aarch64-linux
This patch is to support displaced stepping in aarch64-linux. A
visitor is implemented for displaced stepping, and used to record
information to fixup pc after displaced stepping if needed. Some
emit_* functions are converted to macros, and moved to
arch/aarch64-insn.{c,h} so that they can be shared.
gdb:
2015-10-12 Yao Qi <yao.qi@linaro.org>
* aarch64-linux-tdep.c: Include arch-utils.h.
(aarch64_linux_init_abi): Call set_gdbarch_max_insn_length,
set_gdbarch_displaced_step_copy_insn,
set_gdbarch_displaced_step_fixup,
set_gdbarch_displaced_step_free_closure,
set_gdbarch_displaced_step_location,
and set_gdbarch_displaced_step_hw_singlestep.
* aarch64-tdep.c (struct displaced_step_closure): New.
(struct aarch64_displaced_step_data): New.
(aarch64_displaced_step_b): New function.
(aarch64_displaced_step_b_cond): Likewise.
(aarch64_register): Likewise.
(aarch64_displaced_step_cb): Likewise.
(aarch64_displaced_step_tb): Likewise.
(aarch64_displaced_step_adr): Likewise.
(aarch64_displaced_step_ldr_literal): Likewise.
(aarch64_displaced_step_others): Likewise.
(aarch64_displaced_step_copy_insn): Likewise.
(aarch64_displaced_step_fixup): Likewise.
(aarch64_displaced_step_hw_singlestep): Likewise.
* aarch64-tdep.h (DISPLACED_MODIFIED_INSNS): New macro.
(aarch64_displaced_step_copy_insn): Declare.
(aarch64_displaced_step_fixup): Declare.
(aarch64_displaced_step_hw_singlestep): Declare.
* arch/aarch64-insn.c (emit_insn): Moved from
gdbserver/linux-aarch64-low.c.
(emit_load_store): Likewise.
* arch/aarch64-insn.h (enum aarch64_opcodes): Moved from
gdbserver/linux-aarch64-low.c.
(struct aarch64_register): Likewise.
(struct aarch64_memory_operand): Likewise.
(ENCODE): Likewise.
(can_encode_int32): New macro.
(emit_b, emit_bcond, emit_cb, emit_ldr, emit_ldrsw): Likewise.
(emit_tb, emit_nop): Likewise.
(emit_insn): Declare.
(emit_load_store): Declare.
gdb/gdbserver:
2015-10-12 Yao Qi <yao.qi@linaro.org>
* linux-aarch64-low.c (enum aarch64_opcodes): Move to
arch/aarch64-insn.h.
(struct aarch64_memory_operand): Likewise.
(ENCODE): Likewise.
(emit_insn): Move to arch/aarch64-insn.c.
(emit_b, emit_bcond, emit_cb, emit_tb): Remove.
(emit_load_store): Move to arch/aarch64-insn.c.
(emit_ldr, emit_ldrb, emit_ldrsw, emit_nop): Remove.
(can_encode_int32): Remove.
Diffstat (limited to 'gdb/aarch64-tdep.h')
| -rw-r--r-- | gdb/aarch64-tdep.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gdb/aarch64-tdep.h b/gdb/aarch64-tdep.h index af209a95acc..6297170d426 100644 --- a/gdb/aarch64-tdep.h +++ b/gdb/aarch64-tdep.h @@ -69,6 +69,10 @@ enum aarch64_regnum /* Total number of general (X) registers. */ #define AARCH64_X_REGISTER_COUNT 32 +/* The maximum number of modified instructions generated for one + single-stepped instruction. */ +#define DISPLACED_MODIFIED_INSNS 1 + /* Target-dependent structure in gdbarch. */ struct gdbarch_tdep { @@ -98,4 +102,17 @@ extern struct target_desc *tdesc_aarch64; extern int aarch64_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR addr); +struct displaced_step_closure * + aarch64_displaced_step_copy_insn (struct gdbarch *gdbarch, + CORE_ADDR from, CORE_ADDR to, + struct regcache *regs); + +void aarch64_displaced_step_fixup (struct gdbarch *gdbarch, + struct displaced_step_closure *dsc, + CORE_ADDR from, CORE_ADDR to, + struct regcache *regs); + +int aarch64_displaced_step_hw_singlestep (struct gdbarch *gdbarch, + struct displaced_step_closure *closure); + #endif /* aarch64-tdep.h */ |