diff options
| author | Yao Qi <yao.qi@linaro.org> | 2016-08-19 14:49:31 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2016-08-19 14:50:09 +0100 |
| commit | 03bcd7394eefb9399f5ab97919a0463dea274c02 (patch) | |
| tree | e335381414a10fb5023b950ad6a3039355e47e8c | |
| parent | bbfa2517ded26c1ba9e1af37671565a1a5e6bbc6 (diff) | |
| download | binutils-gdb-03bcd7394eefb9399f5ab97919a0463dea274c02.tar.gz | |
[AArch64] Match instruction "STP with base register" in prologue
Nowadays, we only match pre-indexed STP in prologue. Due to the change
in gcc, https://gcc.gnu.org/ml/gcc-patches/2016-07/msg01933.html, it
may generate "STP with base register" in prologue, which GDB doesn't
handle. That is to say, previously GCC generates prologue like this,
sub sp, sp, #490
stp x29, x30, [sp, #-96]!
mov x29, sp
with the gcc patch above, GCC generates prologue like like this,
sub sp, sp, #4f0
stp x29, x30, [sp]
mov x29, sp
This patch is to teach GDB to recognize this instruction in prologue
analysis.
gdb:
2016-08-19 Yao Qi <yao.qi@linaro.org>
* aarch64-tdep.c (aarch64_analyze_prologue): Handle register
based STP instruction.
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/aarch64-tdep.c | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 50fc8deb409..db3527bf302 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2016-08-19 Yao Qi <yao.qi@linaro.org> + * aarch64-tdep.c (aarch64_analyze_prologue): Handle register + based STP instruction. + +2016-08-19 Yao Qi <yao.qi@linaro.org> + * completer.c (linespec_location_completer): Make file_to_match null-terminated. diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c index e97e2f41ddb..3b7e954424e 100644 --- a/gdb/aarch64-tdep.c +++ b/gdb/aarch64-tdep.c @@ -322,10 +322,11 @@ aarch64_analyze_prologue (struct gdbarch *gdbarch, is64 ? 8 : 4, regs[rt]); } else if ((inst.opcode->iclass == ldstpair_off - || inst.opcode->iclass == ldstpair_indexed) - && inst.operands[2].addr.preind + || (inst.opcode->iclass == ldstpair_indexed + && inst.operands[2].addr.preind)) && strcmp ("stp", inst.opcode->name) == 0) { + /* STP with addressing mode Pre-indexed and Base register. */ unsigned rt1 = inst.operands[0].reg.regno; unsigned rt2 = inst.operands[1].reg.regno; unsigned rn = inst.operands[2].addr.base_regno; |