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[Qemu-devel] [RFC V7 08/10] cpu-exec: trigger a debug request when rexec
From: |
fred . konrad |
Subject: |
[Qemu-devel] [RFC V7 08/10] cpu-exec: trigger a debug request when rexec stops. |
Date: |
Wed, 17 Sep 2014 10:26:48 +0200 |
From: KONRAD Frederic <address@hidden>
This allows QEMU to trigger a debug exception when rexec_dbg_requested
is set.
Signed-off-by: KONRAD Frederic <address@hidden>
---
cpu-exec.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/cpu-exec.c b/cpu-exec.c
index bd93165..be2070d 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -24,6 +24,7 @@
#include "qemu/atomic.h"
#include "sysemu/qtest.h"
#include "qemu/timer.h"
+#include "reverse-execution.h"
/* -icount align implementation. */
@@ -333,6 +334,18 @@ int cpu_exec(CPUArchState *env)
/* This must be volatile so it is not trashed by longjmp() */
volatile bool have_tb_lock = false;
+ #ifndef CONFIG_USER_ONLY
+ if (rexec_is_enabled() && rexec_dbg_requested()) {
+ /*
+ * Reverse execution need to stop right now.
+ * So just generate a EXCP_DEBUG.
+ */
+ cpu->exception_index = EXCP_DEBUG;
+ cpu_handle_debug_exception(env);
+ return EXCP_DEBUG;
+ }
+ #endif /* !CONFIG_USER_ONLY */
+
if (cpu->halted) {
if (!cpu_has_work(cpu)) {
return EXCP_HALTED;
--
1.9.0
- [Qemu-devel] [RFC V7 00/10] Reverse execution., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 01/10] migration: make qemu_savevm_state public., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 02/10] icount: introduce icount timer., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 03/10] icount: check for icount clock deadline when cpu loop exits., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 05/10] trace-events: add reverse-execution events., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 04/10] icount: make icount extra computed on icount clock as well., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 06/10] introduce reverse execution mechanism., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 08/10] cpu-exec: trigger a debug request when rexec stops.,
fred . konrad <=
- [Qemu-devel] [RFC V7 09/10] rexec: synchronize icount on the next event., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 10/10] rexec: allow to enable reverse execution., fred . konrad, 2014/09/17
- [Qemu-devel] [RFC V7 07/10] gdbstub: allow reverse execution in gdb stub., fred . konrad, 2014/09/17