blob: 19108d090c2fc164f1dd55c0180577fa58ce8c25 [file] [log] [blame]
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/mac/call_with_eh_frame.h"
#include <unwind.h>
#include "build/build_config.h"
#include "starboard/types.h"
namespace base {
namespace mac {
#if defined(OS_IOS)
// No iOS assembly implementation exists, so just call the block directly.
void CallWithEHFrame(void (^block)(void)) {
#else // OS_MACOSX
extern "C" _Unwind_Reason_Code __gxx_personality_v0(int,
struct _Unwind_Exception*,
struct _Unwind_Context*);
_Unwind_Reason_Code CxxPersonalityRoutine(
int version,
_Unwind_Action actions,
uint64_t exception_class,
struct _Unwind_Exception* exception_object,
struct _Unwind_Context* context) {
// Unwinding is a two-phase process: phase one searches for an exception
// handler, and phase two performs cleanup. For phase one, this custom
// personality will terminate the search. For phase two, this should delegate
// back to the standard personality routine.
if ((actions & _UA_SEARCH_PHASE) != 0) {
// Tell libunwind that this is the end of the stack. When it encounters the
// CallWithEHFrame, it will stop searching for an exception handler. The
// result is that no exception handler has been found higher on the stack,
// and any that are lower on the stack (e.g. in CFRunLoopRunSpecific), will
// now be skipped. Since this is reporting the end of the stack, and no
// exception handler will have been found, std::terminate() will be called.
return __gxx_personality_v0(version, actions, exception_class,
exception_object, context);
#endif // defined(OS_IOS)
} // namespace mac
} // namespace base