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authorAlex Bennée <alex.bennee@linaro.org>2015-12-17 13:37:15 +0000
committerPeter Maydell <peter.maydell@linaro.org>2015-12-17 13:37:15 +0000
commit26ae59348585e09d9386633984da211c87d52d4f (patch)
tree41a25d601aef25dd9377dcefd8102bc9f726f188 /target-arm
parent2ecb2027bc5033dfa92d00d708723053f9689564 (diff)
target-arm: kvm - support for single step
This adds support for single-step. There isn't much to do on the QEMU side as after we set-up the request for single step via the debug ioctl it is all handled within the kernel. The actual setting of the KVM_GUESTDBG_SINGLESTEP flag is already in the common code. If the kernel doesn't support guest debug the ioctl will simply error. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 1449599553-24713-4-git-send-email-alex.bennee@linaro.org 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/kvm64.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c
index 3b3929dc24..5f96cde603 100644
--- a/target-arm/kvm64.c
+++ b/target-arm/kvm64.c
@@ -534,6 +534,13 @@ bool kvm_arm_handle_debug(CPUState *cs, struct kvm_debug_exit_arch *debug_exit)
kvm_cpu_synchronize_state(cs);
switch (hsr_ec) {
+ case EC_SOFTWARESTEP:
+ if (cs->singlestep_enabled) {
+ return true;
+ } else {
+ error_report("Came out of SINGLE STEP when not enabled");
+ }
+ break;
case EC_AA64_BKPT:
if (kvm_find_sw_breakpoint(cs, env->pc)) {
return true;