Peter Oberndorfer : winedbg: Show some info for msvcrt C++ exceptions.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0bfb26aa996a618b3160d7944f561353e46a2638
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0bfb26aa996a618b3160d7944f561353e46a2638

Author: Peter Oberndorfer <kumbayo84 at arcor.de>
Date:   Tue May 22 20:25:03 2007 +0200

winedbg: Show some info for msvcrt C++ exceptions.

---

 programs/winedbg/debugger.h   |    9 +++++++++
 programs/winedbg/tgt_active.c |    8 ++++++++
 2 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/programs/winedbg/debugger.h b/programs/winedbg/debugger.h
index 3ad2bd3..e09d5f3 100644
--- a/programs/winedbg/debugger.h
+++ b/programs/winedbg/debugger.h
@@ -141,6 +141,15 @@ struct dbg_breakpoint
     struct expr*        condition;
 };
 
+/* used for C++ exceptions in msvcrt
+ * parameters:
+ * [0] CXX_FRAME_MAGIC
+ * [1] pointer to exception object
+ * [2] pointer to type
+ */
+#define CXX_EXCEPTION                       0xe06d7363
+#define CXX_FRAME_MAGIC                     0x19930520
+
 /* Wine extension; Windows doesn't have a name for this code.  This is an
    undocumented exception understood by MS VC debugger, allowing the program
    to name a particular thread.  Search google.com or deja.com for "0x406d1388"
diff --git a/programs/winedbg/tgt_active.c b/programs/winedbg/tgt_active.c
index 21e8966..1698201 100644
--- a/programs/winedbg/tgt_active.c
+++ b/programs/winedbg/tgt_active.c
@@ -381,6 +381,14 @@ static DWORD dbg_handle_exception(const EXCEPTION_RECORD* rec, BOOL first_chance
 	case EXCEPTION_FLT_STACK_CHECK:
             dbg_printf("floating point stack check");
             break;
+        case CXX_EXCEPTION:
+            if(rec->NumberParameters == 3 && rec->ExceptionInformation[0] == CXX_FRAME_MAGIC)
+                dbg_printf("C++ exception(object = 0x%08lx, type = 0x%08lx)",
+                           rec->ExceptionInformation[1], rec->ExceptionInformation[2]);
+            else
+                dbg_printf("C++ exception with strange parameter count %d or magic 0x%08lx",
+                           rec->NumberParameters, rec->ExceptionInformation[0]);
+            break;
         default:
             dbg_printf("0x%08x", rec->ExceptionCode);
             break;