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Unified Diff: src/trap-handler/trap-handler.h

Issue 2723133003: Revert of [wasm] Initial signal handler (Closed)
Patch Set: Created 3 years, 10 months ago
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Index: src/trap-handler/trap-handler.h
diff --git a/src/trap-handler/trap-handler.h b/src/trap-handler/trap-handler.h
index 27830eab6c71e3d01443d397bbd9d91b99bcb40f..e6dd9bdca463c456af0b4fa75972e8facbc11cee 100644
--- a/src/trap-handler/trap-handler.h
+++ b/src/trap-handler/trap-handler.h
@@ -5,28 +5,9 @@
#ifndef V8_TRAP_HANDLER_H_
#define V8_TRAP_HANDLER_H_
-#include <signal.h>
-#include <stdint.h>
-#include <stdlib.h>
-
-#include "src/base/build_config.h"
-#include "src/flags.h"
-#include "src/globals.h"
-
-#if V8_OS_LINUX
-#include <ucontext.h>
-#endif
-
namespace v8 {
namespace internal {
namespace trap_handler {
-
-// TODO(eholk): Support trap handlers on other platforms.
-#if V8_TARGET_ARCH_X64 && V8_OS_LINUX
-#define V8_TRAP_HANDLER_SUPPORTED 1
-#else
-#define V8_TRAP_HANDLER_SUPPORTED 0
-#endif
struct ProtectedInstructionData {
// The offset of this instruction from the start of its code object.
@@ -38,56 +19,6 @@
intptr_t landing_offset;
};
-/// Adjusts the base code pointer.
-void UpdateHandlerDataCodePointer(int index, void* base);
-
-/// Adds the handler data to the place where the signal handler will find it.
-///
-/// This returns a number that can be used to identify the handler data to
-/// UpdateHandlerDataCodePointer and ReleaseHandlerData, or -1 on failure.
-int RegisterHandlerData(void* base, size_t size,
- size_t num_protected_instructions,
- ProtectedInstructionData* protected_instructions);
-
-/// Removes the data from the master list and frees any memory, if necessary.
-void ReleaseHandlerData(int index);
-
-#if V8_OS_WIN
-#define THREAD_LOCAL __declspec(thread)
-#elif V8_OS_ANDROID
-// TODO(eholk): fix this before enabling for trap handlers for Android.
-#define THREAD_LOCAL
-#else
-#define THREAD_LOCAL __thread
-#endif
-
-inline bool UseTrapHandler() {
- return FLAG_wasm_trap_handler && V8_TRAP_HANDLER_SUPPORTED;
-}
-
-extern THREAD_LOCAL bool g_thread_in_wasm_code;
-
-inline bool IsThreadInWasm() { return g_thread_in_wasm_code; }
-
-inline void SetThreadInWasm() {
- if (UseTrapHandler()) {
- DCHECK(!IsThreadInWasm());
- g_thread_in_wasm_code = true;
- }
-}
-inline void ClearThreadInWasm() {
- if (UseTrapHandler()) {
- DCHECK(IsThreadInWasm());
- g_thread_in_wasm_code = false;
- }
-}
-
-bool RegisterDefaultSignalHandler();
-
-#if V8_OS_LINUX
-bool TryHandleSignal(int signum, siginfo_t* info, ucontext_t* context);
-#endif // V8_OS_LINUX
-
} // namespace trap_handler
} // namespace internal
} // namespace v8
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