1 files changed, 124 insertions, 0 deletions
diff --git a/clang/lib/Headers/unwind.h b/clang/lib/Headers/unwind.h
new file mode 100644
index 0000000..a065920
--- /dev/null
+++ b/clang/lib/Headers/unwind.h
@@ -0,0 +1,124 @@
+/*===---- unwind.h - Stack unwinding ----------------------------------------===
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+/* See "Data Definitions for libgcc_s" in the Linux Standard Base.*/
+
+#if __has_include_next(<unwind.h>)
+/* Darwin and libunwind provide an unwind.h. If that's available, use
+ * it. libunwind wraps some of its definitions in #ifdef _GNU_SOURCE,
+ * so define that around the include.*/
+# ifndef _GNU_SOURCE
+#  define _SHOULD_UNDEFINE_GNU_SOURCE
+#  define _GNU_SOURCE
+# endif
+// libunwind's unwind.h reflects the current visibility.  However, Mozilla
+// builds with -fvisibility=hidden and relies on gcc's unwind.h to reset the
+// visibility to default and export its contents.  gcc also allows users to
+// override its override by #defining HIDE_EXPORTS (but note, this only obeys
+// the user's -fvisibility setting; it doesn't hide any exports on its own).  We
+// imitate gcc's header here:
+# ifdef HIDE_EXPORTS
+#  include_next <unwind.h>
+# else
+#  pragma GCC visibility push(default)
+#  include_next <unwind.h>
+#  pragma GCC visibility pop
+# endif
+# ifdef _SHOULD_UNDEFINE_GNU_SOURCE
+#  undef _GNU_SOURCE
+#  undef _SHOULD_UNDEFINE_GNU_SOURCE
+# endif
+#else
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* It is a bit strange for a header to play with the visibility of the
+   symbols it declares, but this matches gcc's behavior and some programs
+   depend on it */
+#pragma GCC visibility push(default)
+
+struct _Unwind_Context;
+typedef enum {
+  _URC_NO_REASON = 0,
+  _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
+
+  _URC_FATAL_PHASE2_ERROR = 2,
+  _URC_FATAL_PHASE1_ERROR = 3,
+  _URC_NORMAL_STOP = 4,
+
+  _URC_END_OF_STACK = 5,
+  _URC_HANDLER_FOUND = 6,
+  _URC_INSTALL_CONTEXT = 7,
+  _URC_CONTINUE_UNWIND = 8
+} _Unwind_Reason_Code;
+
+
+#ifdef __arm__
+
+typedef enum { 
+  _UVRSC_CORE = 0,        /* integer register */ 
+  _UVRSC_VFP = 1,         /* vfp */ 
+  _UVRSC_WMMXD = 3,       /* Intel WMMX data register */ 
+  _UVRSC_WMMXC = 4        /* Intel WMMX control register */ 
+} _Unwind_VRS_RegClass; 
+
+typedef enum { 
+  _UVRSD_UINT32 = 0,  
+  _UVRSD_VFPX = 1,  
+  _UVRSD_UINT64 = 3,  
+  _UVRSD_FLOAT = 4,  
+  _UVRSD_DOUBLE = 5 
+} _Unwind_VRS_DataRepresentation; 
+
+typedef enum { 
+  _UVRSR_OK = 0,  
+  _UVRSR_NOT_IMPLEMENTED = 1,  
+  _UVRSR_FAILED = 2  
+} _Unwind_VRS_Result; 
+
+_Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *context,
+  _Unwind_VRS_RegClass regclass,
+  uint32_t regno,
+  _Unwind_VRS_DataRepresentation representation,
+  void *valuep);
+
+#else
+
+uintptr_t _Unwind_GetIP(struct _Unwind_Context* context);
+
+#endif
+
+typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context*, void*);
+_Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void*);
+
+#pragma GCC visibility pop
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif