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Move target_read_uint32 out of aarch64_relocate_instruction 

This patch is to move target_read_uint32 out of
aarch64_relocate_instruction and pass INSN to
aarch64_relocate_instruction, so that it is cleaner, only decode
instructions.

gdb/gdbserver:

2015-10-12  Yao Qi  <yao.qi@linaro.org>

	* linux-aarch64-low.c (aarch64_relocate_instruction): Add
	argument insn.  Remove local variable insn.  Don't call
	target_read_uint32.
	(aarch64_install_fast_tracepoint_jump_pad): Call
	target_read_uint32.
This commit is contained in:
Yao Qi 2015-10-12 11:28:38 +01:00
parent 8240f4421f
commit 70b439f0a8
2 changed files with 14 additions and 7 deletions
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8
gdb/gdbserver/ChangeLog
View File

@ -1,3 +1,11 @@
2015-10-12 Yao Qi <yao.qi@linaro.org>
* linux-aarch64-low.c (aarch64_relocate_instruction): Add
argument insn. Remove local variable insn. Don't call
target_read_uint32.
(aarch64_install_fast_tracepoint_jump_pad): Call
target_read_uint32.
2015-09-30 Yao Qi <yao.qi@linaro.org>
* linux-aarch64-low.c (emit_movk): Shorten a long line.

13
gdb/gdbserver/linux-aarch64-low.c
View File

@ -1924,8 +1924,8 @@ can_encode_int32 (int32_t val, unsigned bits)
return rest == 0 || rest == -1;
}
/* Relocate an instruction from OLDLOC to *TO. This function will also
increment TO by the number of bytes the new instruction(s) take(s).
/* Relocate an instruction INSN from OLDLOC to *TO. This function will
also increment TO by the number of bytes the new instruction(s) take(s).
PC relative instructions need to be handled specifically:
@ -1937,11 +1937,10 @@ can_encode_int32 (int32_t val, unsigned bits)
- LDR/LDRSW (literal) */
static void
aarch64_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc)
aarch64_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc, uint32_t insn)
{
uint32_t buf[32];
uint32_t *p = buf;
uint32_t insn;
int is_bl;
int is64;
@ -1956,8 +1955,6 @@ aarch64_relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc)
unsigned bit;
int32_t offset;
target_read_uint32 (oldloc, &insn);
if (aarch64_decode_b (oldloc, insn, &is_bl, &offset))
{
offset = (oldloc - *to + offset);
@ -2120,6 +2117,7 @@ aarch64_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint,
uint32_t *p = buf;
int32_t offset;
int i;
uint32_t insn;
CORE_ADDR buildaddr = *jump_entry;
/* We need to save the current state on the stack both to restore it
@ -2422,7 +2420,8 @@ aarch64_install_fast_tracepoint_jump_pad (CORE_ADDR tpoint,
/* Now emit the relocated instruction. */
*adjusted_insn_addr = buildaddr;
aarch64_relocate_instruction (&buildaddr, tpaddr);
target_read_uint32 (tpaddr, &insn);
aarch64_relocate_instruction (&buildaddr, tpaddr, insn);
*adjusted_insn_addr_end = buildaddr;
/* We may not have been able to relocate the instruction. */