From 26ae59348585e09d9386633984da211c87d52d4f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Alex=20Benn=C3=A9e?= Date: Thu, 17 Dec 2015 13:37:15 +0000 Subject: [PATCH] target-arm: kvm - support for single step MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Message-id: 1449599553-24713-4-git-send-email-alex.bennee@linaro.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- target-arm/kvm64.c | 7 +++++++ 1 file changed, 7 insertions(+) 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;