diff options
| author | Sergey Fedorov <serge.fdrv@gmail.com> | 2015-11-10 13:37:32 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-11-10 13:37:32 +0000 |
| commit | 5c629f4ff4dc9ae79cc732f59a8df15ede796ff7 (patch) | |
| tree | 6df7cbdc257583f2afaba09d7b2f07a00cf940f2 /target-arm | |
| parent | a8b4f9585a0bf5186fca793ce2c5d754cd8ec49a (diff) | |
target-arm: Fix gdb singlestep handling in arm_debug_excp_handler()
Do not raise a CPU exception if no CPU breakpoint has fired, since
singlestep is also done by generating a debug internal exception. This
fixes a bug with singlestepping in gdbstub.
Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Message-id: 1446726361-18328-1-git-send-email-serge.fdrv@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/op_helper.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c index b5db345ccd..6cd54c8f7a 100644 --- a/target-arm/op_helper.c +++ b/target-arm/op_helper.c @@ -917,7 +917,13 @@ void arm_debug_excp_handler(CPUState *cs) uint64_t pc = is_a64(env) ? env->pc : env->regs[15]; bool same_el = (arm_debug_target_el(env) == arm_current_el(env)); - if (cpu_breakpoint_test(cs, pc, BP_GDB)) { + /* (1) GDB breakpoints should be handled first. + * (2) Do not raise a CPU exception if no CPU breakpoint has fired, + * since singlestep is also done by generating a debug internal + * exception. + */ + if (cpu_breakpoint_test(cs, pc, BP_GDB) + || !cpu_breakpoint_test(cs, pc, BP_CPU)) { return; } |