DebugBreakProcess

[Eric Pouech <eric.pouech@wanadoo.fr>]

however, for implementing the Ctrl-C handling in winedbg, we really need
DebugBreakProcess to work
this API was (on i386) sending single step exception instead of
breakpoint exception
this patch takes care of it

A+
Name:          sig_trap
ChangeLog:     fixed DebugBreakProcess (now generates EXCEPTION_BREAKPOINT instead of EXCEPTION_SINGLE_STEP)
License:       X11
GenDate:       2002/06/01 19:21:53 UTC
ModifiedFiles: dlls/ntdll/signal_i386.c
AddedFiles:    
===================================================================
RCS file: /home/cvs/cvsroot/wine/wine/dlls/ntdll/signal_i386.c,v
retrieving revision 1.36
diff -u -u -r1.36 signal_i386.c
--- dlls/ntdll/signal_i386.c	31 May 2002 23:25:49 -0000	1.36
+++ dlls/ntdll/signal_i386.c	1 Jun 2002 12:27:32 -0000
@@ -765,8 +765,19 @@
     switch(trap_code)
     {
     case T_TRCTRAP:  /* Single-step exception */
-        rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
-        context->EFlags &= ~0x100;  /* clear single-step flag */
+        if (context->EFlags & 0x100)
+        {
+            rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
+            context->EFlags &= ~0x100;  /* clear single-step flag */
+        }
+        else
+        {
+            /* likely we get this because of a kill(SIGTRAP) on ourself, 
+             * so send a bp exception instead of a single step exception
+             */
+            TRACE("Spurious single step trap => breakpoint simulation\n");
+            rec.ExceptionCode = EXCEPTION_BREAKPOINT;
+        }
         break;
     case T_BPTFLT:   /* Breakpoint exception */
         rec.ExceptionAddress = (char *)rec.ExceptionAddress - 1;  /* back up over the int3 instruction */
@@ -963,17 +974,21 @@
  */
 static HANDLER_DEF(int_handler)
 {
-    EXCEPTION_RECORD rec;
-    CONTEXT context;
+    extern int CONSOLE_HandleCtrlC(void);
+    if (!CONSOLE_HandleCtrlC())
+    {
+        EXCEPTION_RECORD rec;
+        CONTEXT context;
 
-    save_context( &context, HANDLER_CONTEXT );
-    rec.ExceptionCode    = CONTROL_C_EXIT;
-    rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
-    rec.ExceptionRecord  = NULL;
-    rec.ExceptionAddress = (LPVOID)context.Eip;
-    rec.NumberParameters = 0;
-    EXC_RtlRaiseException( &rec, &context );
-    restore_context( &context, HANDLER_CONTEXT );
+        save_context( &context, HANDLER_CONTEXT );
+        rec.ExceptionCode    = CONTROL_C_EXIT;
+        rec.ExceptionFlags   = EXCEPTION_CONTINUABLE;
+        rec.ExceptionRecord  = NULL;
+        rec.ExceptionAddress = (LPVOID)context.Eip;
+        rec.NumberParameters = 0;
+        EXC_RtlRaiseException( &rec, &context );
+        restore_context( &context, HANDLER_CONTEXT );
+    }
 }