[Qemu-devel] [PATCH 13/43] windbg: handler of parsing context

[Mihail Abakumov]

Implemented handler of parsing context.

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>
---
 windbgstub.c |   36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/windbgstub.c b/windbgstub.c
index 2ebc161e33..d22eea70aa 100755
--- a/windbgstub.c
+++ b/windbgstub.c
@@ -11,6 +11,7 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
+#include "sysemu/sysemu.h"
 #include "chardev/char.h"
 #include "chardev/char-fe.h"
 #include "exec/windbgstub.h"
@@ -94,7 +95,6 @@ static void windbg_send_data_packet(uint8_t *data, uint16_t 
byte_count,
     windbg_state->data_packet_id ^= 1;
 }
 
-__attribute__ ((unused)) /* unused yet */
 static void windbg_send_control_packet(uint16_t type)
 {
     KD_PACKET packet = {
@@ -113,9 +113,41 @@ static void windbg_send_control_packet(uint16_t type)
     windbg_state->ctrl_packet_id ^= 1;
 }
 
-static void windbg_ctx_handler(ParsingContext *ctx)
+static void windbg_process_data_packet(ParsingContext *ctx)
 {}
 
+static void windbg_process_control_packet(ParsingContext *ctx)
+{}
+
+static void windbg_ctx_handler(ParsingContext *ctx)
+{
+    switch (ctx->result) {
+    case RESULT_NONE:
+        break;
+
+    case RESULT_BREAKIN_BYTE:
+        vm_stop(RUN_STATE_PAUSED);
+        break;
+
+    case RESULT_CONTROL_PACKET:
+        windbg_process_control_packet(ctx);
+        break;
+
+    case RESULT_DATA_PACKET:
+        windbg_process_data_packet(ctx);
+        break;
+
+    case RESULT_UNKNOWN_PACKET:
+    case RESULT_ERROR:
+        windbg_state->ctrl_packet_id = 0;
+        windbg_send_control_packet(PACKET_TYPE_KD_RESEND);
+        break;
+
+    default:
+        break;
+    }
+}
+
 static void windbg_read_byte(ParsingContext *ctx, uint8_t byte)
 {
     switch (ctx->state) {