[Qemu-devel] [PATCH 16/43] windbg: generate ExceptionStateChange

[Mihail Abakumov]

Added function for generate ExceptionStateChange packet.

Signed-off-by: Mihail Abakumov <mikhail.abaku...@ispras.ru>
Signed-off-by: Pavel Dovgalyuk <dovga...@ispras.ru>
Signed-off-by: Dmitriy Koltunov <koltu...@ispras.ru>
---
 include/exec/windbgstub-utils.h |    3 +++
 windbgstub-utils.c              |   21 ++++++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 791721d472..0b859cd6a8 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -101,6 +101,9 @@ typedef struct SizedBuf {
     buf.data = NULL;        \
     buf.size = 0;           \
 } while (false)
+
+SizedBuf kd_gen_exception_sc(CPUState *cpu);
+
 bool windbg_on_load(void);
 void windbg_on_exit(void);
 
diff --git a/windbgstub-utils.c b/windbgstub-utils.c
index 60f6705f7c..48d09ff424 100755
--- a/windbgstub-utils.c
+++ b/windbgstub-utils.c
@@ -34,7 +34,6 @@ static void kd_breakpoint_remove_range(CPUState *cpu, 
target_ulong base,
                                        target_ulong limit)
 {}
 
-__attribute__ ((unused)) /* unused yet */
 static void kd_init_state_change(CPUState *cpu,
                                  DBGKD_ANY_WAIT_STATE_CHANGE *sc)
 {
@@ -83,6 +82,26 @@ static void kd_init_state_change(CPUState *cpu,
     }
 }
 
+SizedBuf kd_gen_exception_sc(CPUState *cpu)
+{
+    CPUArchState *env = cpu->env_ptr;
+    SizedBuf buf;
+    SBUF_MALLOC(buf, sizeof(DBGKD_ANY_WAIT_STATE_CHANGE) + sizeof(int));
+
+    DBGKD_ANY_WAIT_STATE_CHANGE *sc = (DBGKD_ANY_WAIT_STATE_CHANGE *) buf.data;
+    kd_init_state_change(cpu, sc);
+
+    sc->NewState = DbgKdExceptionStateChange;
+    sc->NewState = ldl_p(&sc->NewState);
+
+    DBGKM_EXCEPTION_RECORD64 *exc = &sc->u.Exception.ExceptionRecord;
+    exc->ExceptionCode = 0x80000003;
+    exc->ExceptionCode = ldl_p(&exc->ExceptionCode);
+    exc->ExceptionAddress = ldtul_p(&env->eip);
+
+    return buf;
+}
+
 bool windbg_on_load(void)
 {
     CPUState *cpu = qemu_get_cpu(0);