Pavel Dovgalyuk fda8458bd3 gdbstub: add reverse step support in replay mode ... GDB remote protocol supports two reverse debugging commands: reverse step and reverse continue. This patch adds support of the first one to the gdbstub. Reverse step is intended to step one instruction in the backwards direction. This is not possible in regular execution. But replayed execution is deterministic, therefore we can load one of the prior snapshots and proceed to the desired step. It is equivalent to stepping one instruction back. There should be at least one snapshot preceding the debugged part of the replay log. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> -- v4 changes: - inverted condition in cpu_handle_guest_debug (suggested by Alex Bennée) Message-Id: <160174522341.12451.1498758422543765253.stgit@pasha-ThinkPad-X280> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-10-06 08:34:49 +02:00
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kvm	kvm: kvm_init_vcpu take Error pointer	2020-10-05 16:41:22 +02:00
qtest	cpus: extract out qtest-specific code to accel/qtest	2020-10-05 16:41:22 +02:00
stubs	kvm: remove kvm specific functions from global includes	2020-10-05 16:41:22 +02:00
tcg	gdbstub: add reverse step support in replay mode	2020-10-06 08:34:49 +02:00
xen	meson: accel	2020-08-21 06:30:36 -04:00
accel.c	accel: Introduce the current_accel() wrapper	2020-01-24 20:59:11 +01:00
Kconfig	accel/Kconfig: Add the TCG selector	2020-07-10 18:02:21 -04:00
meson.build	cpus: extract out qtest-specific code to accel/qtest	2020-10-05 16:41:22 +02:00