r262178 - Add ARM EHABI-related constants to unwind.h.

[Logan Chien via cfe-commits]

Author: logan
Date: Sun Feb 28 09:01:42 2016
New Revision: 262178

URL: http://llvm.org/viewvc/llvm-project?rev=262178&view=rev
Log:
Add ARM EHABI-related constants to unwind.h.

Adds a number of constants, defined in the ARM EHABI spec, to the Clang
lib/Headers/unwind.h header. This is prerequisite for landing
http://reviews.llvm.org/D15781, as previously discussed there.

Patch by Timon Van Overveldt.

Modified:
    cfe/trunk/lib/Headers/unwind.h

Modified: cfe/trunk/lib/Headers/unwind.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Headers/unwind.h?rev=262178&r1=262177&r2=262178&view=diff
==============================================================================
--- cfe/trunk/lib/Headers/unwind.h (original)
+++ cfe/trunk/lib/Headers/unwind.h Sun Feb 28 09:01:42 2016
@@ -79,6 +79,10 @@ struct _Unwind_Context;
 struct _Unwind_Exception;
 typedef enum {
   _URC_NO_REASON = 0,
+#if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \
+    !defined(__ARM_DWARF_EH__)
+  _URC_OK = 0, /* used by ARM EHABI */
+#endif
   _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
 
   _URC_FATAL_PHASE2_ERROR = 2,
@@ -88,7 +92,11 @@ typedef enum {
   _URC_END_OF_STACK = 5,
   _URC_HANDLER_FOUND = 6,
   _URC_INSTALL_CONTEXT = 7,
-  _URC_CONTINUE_UNWIND = 8
+  _URC_CONTINUE_UNWIND = 8,
+#if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \
+    !defined(__ARM_DWARF_EH__)
+  _URC_FAILURE = 9 /* used by ARM EHABI */
+#endif
 } _Unwind_Reason_Code;
 
 typedef enum {
@@ -150,6 +158,15 @@ typedef enum {
   _UVRSR_FAILED = 2
 } _Unwind_VRS_Result;
 
+#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__ARM_DWARF_EH__)
+typedef uint32_t _Unwind_State;
+#define _US_VIRTUAL_UNWIND_FRAME  ((_Unwind_State)0)
+#define _US_UNWIND_FRAME_STARTING ((_Unwind_State)1)
+#define _US_UNWIND_FRAME_RESUME   ((_Unwind_State)2)
+#define _US_ACTION_MASK           ((_Unwind_State)3)
+#define _US_FORCE_UNWIND          ((_Unwind_State)8)
+#endif
+
 _Unwind_VRS_Result _Unwind_VRS_Get(struct _Unwind_Context *__context,
   _Unwind_VRS_RegClass __regclass,
   uint32_t __regno,