[Qemu-devel] [PATCH 36/43] windbg: implemented kd_api_continue

[Mihail Abakumov]

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 |    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 3d062ab9bb..f6a60292a2 100755
--- a/include/exec/windbgstub-utils.h
+++ b/include/exec/windbgstub-utils.h
@@ -108,6 +108,7 @@ void kd_api_get_context(CPUState *cpu, PacketData *pd);
 void kd_api_set_context(CPUState *cpu, PacketData *pd);
 void kd_api_write_breakpoint(CPUState *cpu, PacketData *pd);
 void kd_api_restore_breakpoint(CPUState *cpu, PacketData *pd);
+void kd_api_continue(CPUState *cpu, PacketData *pd);
 void kd_api_read_control_space(CPUState *cpu, PacketData *pd);
 void kd_api_write_control_space(CPUState *cpu, PacketData *pd);
 void kd_api_unsupported(CPUState *cpu, PacketData *pd);
diff --git a/windbgstub-utils.c b/windbgstub-utils.c
index c5d24c5d8e..8d5136f310 100755
--- a/windbgstub-utils.c
+++ b/windbgstub-utils.c
@@ -10,6 +10,7 @@
  */
 
 #include "exec/windbgstub-utils.h"
+#include "sysemu/sysemu.h"
 
 #define IS_LOCAL_BP_ENABLED(dr7, index) (((dr7) >> ((index) * 2)) & 1)
 
@@ -1029,6 +1030,20 @@ void kd_api_restore_breakpoint(CPUState *cpu, PacketData 
*pd)
     }
 }
 
+void kd_api_continue(CPUState *cpu, 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(cpu, ssFlag);
+        if (!runstate_needs_reset()) {
+            vm_start();
+        }
+    }
+}
+
 void kd_api_read_control_space(CPUState *cpu, PacketData *pd)
 {
     DBGKD_READ_MEMORY64 *mem = &pd->m64.u.ReadMemory;
diff --git a/windbgstub.c b/windbgstub.c
index 54564962a5..19a4f0184b 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -161,6 +161,11 @@ static void 
windbg_process_manipulate_packet(ParsingContext *ctx)
         kd_api_restore_breakpoint(cpu, &ctx->data);
         break;
 
+    case DbgKdContinueApi:
+    case DbgKdContinueApi2:
+        kd_api_continue(cpu, &ctx->data);
+        return;
+
     case DbgKdReadControlSpaceApi:
         kd_api_read_control_space(cpu, &ctx->data);
         break;