[Qemu-devel] [PATCH 31/39] windbg: implement kd_api_continue

[Mikhail Abakumov]

Signed-off-by: Mikhail Abakumov <mikhail.abaku...@ispras.ru>
Signed-off-by: Pavel Dovgalyuk <dovga...@ispras.ru>
---
 include/exec/windbgstub-utils.h |    1 +
 windbgstub-utils.c              |   15 +++++++++++++++
 windbgstub.c                    |    5 +++++
 3 files changed, 21 insertions(+)

diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h
index 85b7322b82..2843ad055e 100644
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -73,6 +73,7 @@ void kd_api_get_context(CPUState *cs, PacketData *pd);
 void kd_api_set_context(CPUState *cs, PacketData *pd);
 void kd_api_write_breakpoint(CPUState *cs, PacketData *pd);
 void kd_api_restore_breakpoint(CPUState *cs, PacketData *pd);
+void kd_api_continue(CPUState *cs, PacketData *pd);
 void kd_api_read_control_space(CPUState *cs, PacketData *pd);
 void kd_api_write_control_space(CPUState *cs, PacketData *pd);
 void kd_api_clear_all_internal_breakpoints(CPUState *cs, PacketData *pd);
diff --git a/windbgstub-utils.c b/windbgstub-utils.c
index 67934442d9..ab88e36e2e 100644
--- a/windbgstub-utils.c
+++ b/windbgstub-utils.c
@@ -10,6 +10,7 @@
  */
 
 #include "exec/windbgstub-utils.h"
+#include "sysemu/sysemu.h"
 
 static const char *kd_api_names[] = {
     "DbgKdReadVirtualMemoryApi",
@@ -308,6 +309,20 @@ void kd_api_restore_breakpoint(CPUState *cs, PacketData 
*pd)
     }
 }
 
+void kd_api_continue(CPUState *cs, PacketData *pd)
+{
+    uint32_t status = ldl_p(&pd->m64.u.Continue2.ContinueStatus);
+    uint32_t trace = ldl_p(&pd->m64.u.Continue2.ControlSet.TraceFlag);
+    int ssFlag = trace ? SSTEP_ENABLE | SSTEP_NOIRQ | SSTEP_NOTIMER : 0;
+
+    if (NT_SUCCESS(status)) {
+        cpu_single_step(cs, ssFlag);
+        if (!runstate_needs_reset()) {
+            vm_start();
+        }
+    }
+}
+
 void kd_api_clear_all_internal_breakpoints(CPUState *cs, PacketData *pd)
 {
 }
diff --git a/windbgstub.c b/windbgstub.c
index 0e4ad6d009..d64bbc3f34 100644
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -183,6 +183,11 @@ static void windbg_process_manipulate_packet(WindbgState 
*state)
         kd_api_restore_breakpoint(cs, data);
         break;
 
+    case DbgKdContinueApi:
+    case DbgKdContinueApi2:
+        kd_api_continue(cs, data);
+        return;
+
     case DbgKdReadControlSpaceApi:
         kd_api_read_control_space(cs, data);
         break;