Watchpoint support (previous commit got eaten by Savannah server crash).

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2479 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 18 insertions, 0 deletions

diff --git a/gdbstub.c b/gdbstub.c
index 57d97e340c..4d62a88916 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -856,6 +856,12 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
             if (cpu_breakpoint_insert(env, addr) < 0)
                 goto breakpoint_error;
             put_packet(s, "OK");
+#ifndef CONFIG_USER_ONLY
+        } else if (type == 2) {
+            if (cpu_watchpoint_insert(env, addr) < 0)
+                goto breakpoint_error;
+            put_packet(s, "OK");
+#endif
         } else {
         breakpoint_error:
             put_packet(s, "E22");
@@ -872,6 +878,11 @@ static int gdb_handle_packet(GDBState *s, CPUState *env, const char *line_buf)
         if (type == 0 || type == 1) {
             cpu_breakpoint_remove(env, addr);
             put_packet(s, "OK");
+#ifndef CONFIG_USER_ONLY
+        } else if (type == 2) {
+            cpu_watchpoint_remove(env, addr);
+            put_packet(s, "OK");
+#endif
         } else {
             goto breakpoint_error;
         }
@@ -914,6 +925,13 @@ static void gdb_vm_stopped(void *opaque, int reason)
     cpu_single_step(s->env, 0);
 
     if (reason == EXCP_DEBUG) {
+        if (s->env->watchpoint_hit) {
+            snprintf(buf, sizeof(buf), "T%02xwatch:%x;", SIGTRAP,
+                     s->env->watchpoint[s->env->watchpoint_hit - 1].vaddr);
+            put_packet(s, buf);
+            s->env->watchpoint_hit = 0;
+            return;
+        }
 	tb_flush(s->env);
         ret = SIGTRAP;
     } else if (reason == EXCP_INTERRUPT) {