Add a minimal unwind.h that knows how to forward to the system one in systems

that have it in /usr/include (only OS X Lion so far).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146140 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Headers/CMakeLists.txt b/lib/Headers/CMakeLists.txt
index 771cfcd9f5f83c3f740353ff70751d9b574cb4b7..af038301635c7616aa9b0849d623dff93b04c073 100644 (file)
--- a/lib/Headers/CMakeLists.txt
+++ b/lib/Headers/CMakeLists.txt
@@ -24,6 +24,7 @@ set(files
   x86intrin.h
   xmmintrin.h
   cpuid.h
+  unwind.h
   )
 
 set(output_dir ${LLVM_BINARY_DIR}/lib/clang/${CLANG_VERSION}/include)

diff --git a/lib/Headers/unwind.h b/lib/Headers/unwind.h
new file mode 100644 (file)
index 0000000..0e42ba4
--- /dev/null
+++ b/lib/Headers/unwind.h
@@ -0,0 +1,60 @@
+/*===---- 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 __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >=  1070
+/* Starting in OS X Lion the SDK includes a unwind.h. We should just use it. */
+#include_next <unwind.h>
+#else
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+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;
+
+uintptr_t _Unwind_GetIP(struct _Unwind_Context* context);
+typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context*, void*);
+_Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void*);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif