diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2018-03-23 18:26:46 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2018-03-23 18:26:46 +0000 |
| commit | 62b94f31d0df75187bb00684fc29e8639eacc0c5 (patch) | |
| tree | 1a8485426cbf1c4f8b7adb9308feaf89635c59fc /target/arm | |
| parent | 81621d9ab8a0f07956e67850b15eebf6d6992eec (diff) | |
| download | qemu-62b94f31d0df75187bb00684fc29e8639eacc0c5.tar.gz | |
target/arm: Set FSR for BKPT, BRK when raising exception
Now that we have a helper function specifically for the BRK and
BKPT instructions, we can set the exception.fsr there rather
than in arm_cpu_do_interrupt_aarch32(). This allows us to
use our new arm_debug_exception_fsr() helper.
In particular this fixes a bug where we were hardcoding the
short-form IFSR value, which is wrong if the target exception
level has LPAE enabled.
Fixes: https://bugs.launchpad.net/qemu/+bug/1756927
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180320134114.30418-4-peter.maydell@linaro.org
Diffstat (limited to 'target/arm')
| -rw-r--r-- | target/arm/helper.c | 1 | ||||
| -rw-r--r-- | target/arm/op_helper.c | 2 |
2 files changed, 2 insertions, 1 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 09893e3f72..dcb8476d9e 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -7910,7 +7910,6 @@ static void arm_cpu_do_interrupt_aarch32(CPUState *cs) offset = 0; break; case EXCP_BKPT: - env->exception.fsr = 2; /* Fall through to prefetch abort. */ case EXCP_PREFETCH_ABORT: A32_BANKED_CURRENT_REG_SET(env, ifsr, env->exception.fsr); diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index 75efff9edf..8e1e521193 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -488,6 +488,8 @@ void HELPER(exception_with_syndrome)(CPUARMState *env, uint32_t excp, */ void HELPER(exception_bkpt_insn)(CPUARMState *env, uint32_t syndrome) { + /* FSR will only be used if the debug target EL is AArch32. */ + env->exception.fsr = arm_debug_exception_fsr(env); raise_exception(env, EXCP_BKPT, syndrome, arm_debug_target_el(env)); } |