Index: third_party/libc++abi/include/unwind.h |
=================================================================== |
--- third_party/libc++abi/include/unwind.h (revision 0) |
+++ third_party/libc++abi/include/unwind.h (revision 0) |
@@ -0,0 +1,217 @@ |
+//===------------------------------- unwind.h -----------------------------===// |
+// |
+// The LLVM Compiler Infrastructure |
+// |
+// This file is dual licensed under the MIT and the University of Illinois Open |
+// Source Licenses. See LICENSE.TXT for details. |
+// |
+// |
+// C++ ABI Level 1 ABI documented at: |
+// http://mentorembedded.github.io/cxx-abi/abi-eh.html |
+// |
+//===----------------------------------------------------------------------===// |
+ |
+#ifndef __UNWIND_H__ |
+#define __UNWIND_H__ |
+ |
+#include <stdint.h> |
+#include <stddef.h> |
+ |
+#if defined(__APPLE__) |
+#define LIBUNWIND_UNAVAIL __attribute__ (( unavailable )) |
+#else |
+#define LIBUNWIND_UNAVAIL |
+#endif |
+ |
+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; |
+ |
+typedef enum { |
+ _UA_SEARCH_PHASE = 1, |
+ _UA_CLEANUP_PHASE = 2, |
+ _UA_HANDLER_FRAME = 4, |
+ _UA_FORCE_UNWIND = 8, |
+ _UA_END_OF_STACK = 16 // gcc extension to C++ ABI |
+} _Unwind_Action; |
+ |
+struct _Unwind_Context; // opaque |
+struct _Unwind_Exception; // forward declaration |
+ |
+struct _Unwind_Exception { |
+ uint64_t exception_class; |
+ void (*exception_cleanup)(_Unwind_Reason_Code reason, |
+ struct _Unwind_Exception *exc); |
+ uintptr_t private_1; // non-zero means forced unwind |
+ uintptr_t private_2; // holds sp that phase1 found for phase2 to use |
+#if !__LP64__ |
+ // The gcc implementation of _Unwind_Exception used attribute mode on the |
+ // above fields which had the side effect of causing this whole struct to |
+ // round up to 32 bytes in size. To be more explicit, we add pad fields |
+ // added for binary compatibility. |
+ uint32_t reserved[3]; |
+#endif |
+}; |
+ |
+typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) |
+ (int version, |
+ _Unwind_Action actions, |
+ uint64_t exceptionClass, |
+ struct _Unwind_Exception* exceptionObject, |
+ struct _Unwind_Context* context, |
+ void* stop_parameter ); |
+ |
+typedef _Unwind_Reason_Code (*__personality_routine) |
+ (int version, |
+ _Unwind_Action actions, |
+ uint64_t exceptionClass, |
+ struct _Unwind_Exception* exceptionObject, |
+ struct _Unwind_Context* context); |
+ |
+#ifdef __cplusplus |
+extern "C" { |
+#endif |
+ |
+// |
+// The following are the base functions documented by the C++ ABI |
+// |
+#if __arm__ |
+extern _Unwind_Reason_Code |
+ _Unwind_SjLj_RaiseException(struct _Unwind_Exception *exception_object); |
+extern void _Unwind_SjLj_Resume(struct _Unwind_Exception *exception_object); |
+#else |
+extern _Unwind_Reason_Code |
+ _Unwind_RaiseException(struct _Unwind_Exception *exception_object); |
+extern void _Unwind_Resume(struct _Unwind_Exception *exception_object); |
+#endif |
+extern void _Unwind_DeleteException(struct _Unwind_Exception *exception_object); |
+extern uintptr_t _Unwind_GetGR(struct _Unwind_Context *context, int index); |
+extern void _Unwind_SetGR(struct _Unwind_Context *context, int index, |
+ uintptr_t new_value); |
+extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *context); |
+extern void _Unwind_SetIP(struct _Unwind_Context *, uintptr_t new_value); |
+extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context *context); |
+extern uintptr_t |
+ _Unwind_GetLanguageSpecificData(struct _Unwind_Context *context); |
+#if __arm__ |
+extern _Unwind_Reason_Code |
+ _Unwind_SjLj_ForcedUnwind(struct _Unwind_Exception *exception_object, |
+ _Unwind_Stop_Fn stop, void *stop_parameter); |
+#else |
+extern _Unwind_Reason_Code |
+ _Unwind_ForcedUnwind(struct _Unwind_Exception *exception_object, |
+ _Unwind_Stop_Fn stop, void *stop_parameter); |
+#endif |
+ |
+#if __arm__ |
+typedef struct _Unwind_FunctionContext *_Unwind_FunctionContext_t; |
+extern void _Unwind_SjLj_Register(_Unwind_FunctionContext_t fc); |
+extern void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t fc); |
+#endif |
+ |
+// |
+// The following are semi-suppoted extensions to the C++ ABI |
+// |
+ |
+// |
+// called by __cxa_rethrow(). |
+// |
+#if __arm__ |
+extern _Unwind_Reason_Code |
+ _Unwind_SjLj_Resume_or_Rethrow(struct _Unwind_Exception *exception_object); |
+#else |
+extern _Unwind_Reason_Code |
+ _Unwind_Resume_or_Rethrow(struct _Unwind_Exception *exception_object); |
+#endif |
+ |
+// _Unwind_Backtrace() is a gcc extension that walks the stack and calls the |
+// _Unwind_Trace_Fn once per frame until it reaches the bottom of the stack |
+// or the _Unwind_Trace_Fn function returns something other than _URC_NO_REASON. |
+typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context *, |
+ void *); |
+extern _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void *); |
+ |
+// _Unwind_GetCFA is a gcc extension that can be called from within a |
+// personality handler to get the CFA (stack pointer before call) of |
+// current frame. |
+extern uintptr_t _Unwind_GetCFA(struct _Unwind_Context *); |
+ |
+ |
+// _Unwind_GetIPInfo is a gcc extension that can be called from within a |
+// personality handler. Similar to _Unwind_GetIP() but also returns in |
+// *ipBefore a non-zero value if the instruction pointer is at or before the |
+// instruction causing the unwind. Normally, in a function call, the IP returned |
+// is the return address which is after the call instruction and may be past the |
+// end of the function containing the call instruction. |
+extern uintptr_t _Unwind_GetIPInfo(struct _Unwind_Context *context, |
+ int *ipBefore); |
+ |
+ |
+// __register_frame() is used with dynamically generated code to register the |
+// FDE for a generated (JIT) code. The FDE must use pc-rel addressing to point |
+// to its function and optional LSDA. |
+// __register_frame() has existed in all versions of Mac OS X, but in 10.4 and |
+// 10.5 it was buggy and did not actually register the FDE with the unwinder. |
+// In 10.6 and later it does register properly. |
+extern void __register_frame(const void *fde); |
+extern void __deregister_frame(const void *fde); |
+ |
+// _Unwind_Find_FDE() will locate the FDE if the pc is in some function that has |
+// an associated FDE. Note, Mac OS X 10.6 and later, introduces "compact unwind |
+// info" which the runtime uses in preference to dwarf unwind info. This |
+// function will only work if the target function has an FDE but no compact |
+// unwind info. |
+struct dwarf_eh_bases { |
+ uintptr_t tbase; |
+ uintptr_t dbase; |
+ uintptr_t func; |
+}; |
+extern const void *_Unwind_Find_FDE(const void *pc, struct dwarf_eh_bases *); |
+ |
+ |
+// This function attempts to find the start (address of first instruction) of |
+// a function given an address inside the function. It only works if the |
+// function has an FDE (dwarf unwind info). |
+// This function is unimplemented on Mac OS X 10.6 and later. Instead, use |
+// _Unwind_Find_FDE() and look at the dwarf_eh_bases.func result. |
+extern void *_Unwind_FindEnclosingFunction(void *pc); |
+ |
+// Mac OS X does not support text-rel and data-rel addressing so these functions |
+// are unimplemented |
+extern uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context *context) |
+ LIBUNWIND_UNAVAIL; |
+extern uintptr_t _Unwind_GetTextRelBase(struct _Unwind_Context *context) |
+ LIBUNWIND_UNAVAIL; |
+ |
+// Mac OS X 10.4 and 10.5 had implementations of these functions in |
+// libgcc_s.dylib, but they never worked. |
+/// These functions are no longer available on Mac OS X. |
+extern void __register_frame_info_bases(const void *fde, void *ob, void *tb, |
+ void *db) LIBUNWIND_UNAVAIL; |
+extern void __register_frame_info(const void *fde, void *ob) |
+ LIBUNWIND_UNAVAIL; |
+extern void __register_frame_info_table_bases(const void *fde, void *ob, |
+ void *tb, void *db) |
+ LIBUNWIND_UNAVAIL; |
+extern void __register_frame_info_table(const void *fde, void *ob) |
+ LIBUNWIND_UNAVAIL; |
+extern void __register_frame_table(const void *fde) |
+ LIBUNWIND_UNAVAIL; |
+extern void *__deregister_frame_info(const void *fde) |
+ LIBUNWIND_UNAVAIL; |
+extern void *__deregister_frame_info_bases(const void *fde) |
+ LIBUNWIND_UNAVAIL; |
+ |
+#ifdef __cplusplus |
+} |
+#endif |
+ |
+#endif // __UNWIND_H__ |
Property changes on: third_party/libc++abi/include/unwind.h |
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Added: svn:eol-style |
+ LF |