97562879b1
In file include/v8config.h we define: ifdef V8_OS_WIN ... if defined(_M_X64) || defined(__x86_64__) define V8_OS_WIN_X64 true endif and V8_OS_WIN_X64 is supposed to be defined when targeting X64 on Windows only. But this is wrong because V8_OS_WIN_X64 gets defined also on an ARM64 builds when the host machine is X64. It should instead be: ifdef V8_OS_WIN ... if defined(V8_TARGET_ARCH_X64) define V8_OS_WIN_X64 true endif Bug: v8:9090 Change-Id: I88e4c46bb6df1efa2070d4e1785081d71df96f0e Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1554222 Reviewed-by: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Paolo Severini <paolosev@microsoft.com> Cr-Commit-Position: refs/heads/master@{#60758}
102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
// Copyright 2019 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef V8_UNWINDING_INFO_WIN64_H_
|
|
#define V8_UNWINDING_INFO_WIN64_H_
|
|
|
|
#include "include/v8.h"
|
|
#include "include/v8config.h"
|
|
#include "src/globals.h"
|
|
|
|
#if defined(V8_OS_WIN_X64)
|
|
#include "src/base/win32-headers.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
namespace win64_unwindinfo {
|
|
|
|
#define CRASH_HANDLER_FUNCTION_NAME CrashForExceptionInNonABICompliantCodeRange
|
|
#define CRASH_HANDLER_FUNCTION_NAME_STRING \
|
|
"CrashForExceptionInNonABICompliantCodeRange"
|
|
|
|
static const int kPushRbpInstructionLength = 1;
|
|
static const int kMovRbpRspInstructionLength = 3;
|
|
static const int kRbpPrefixCodes = 2;
|
|
static const int kRbpPrefixLength =
|
|
kPushRbpInstructionLength + kMovRbpRspInstructionLength;
|
|
|
|
/**
|
|
* Returns true if V8 is configured to emit unwinding data for embedded in the
|
|
* pdata/xdata sections of the executable. Currently, this happens when V8 is
|
|
* built with "v8_win64_unwinding_info = true".
|
|
*/
|
|
bool CanEmitUnwindInfoForBuiltins();
|
|
|
|
/**
|
|
* Returns true if V8 if we can register unwinding data for the whole code range
|
|
* of an isolate or WASM module. The first page of the code range is reserved
|
|
* and writable, to be used to store unwind data, as documented in:
|
|
* https://docs.microsoft.com/en-us/cpp/build/exception-handling-x64.
|
|
* In jitless mode V8 does not allocate any executable memory itself so the only
|
|
* non-abi-compliant code range is in the embedded blob.
|
|
*/
|
|
bool CanRegisterUnwindInfoForNonABICompliantCodeRange();
|
|
|
|
/**
|
|
* Registers a custom exception handler for exceptions in V8-generated code.
|
|
*/
|
|
void SetUnhandledExceptionCallback(
|
|
v8::UnhandledExceptionCallback unhandled_exception_callback);
|
|
|
|
/**
|
|
* Returns a vector of bytes that contains the Win64 unwind data used for all
|
|
* V8 builtin functions.
|
|
*/
|
|
std::vector<uint8_t> GetUnwindInfoForBuiltinFunctions();
|
|
|
|
void RegisterNonABICompliantCodeRange(void* start, size_t size_in_bytes);
|
|
void UnregisterNonABICompliantCodeRange(void* start);
|
|
|
|
class BuiltinUnwindInfo {
|
|
public:
|
|
BuiltinUnwindInfo() : is_leaf_function_(true) {}
|
|
explicit BuiltinUnwindInfo(const std::vector<int>& fp_offsets)
|
|
: is_leaf_function_(false), fp_offsets_(fp_offsets) {}
|
|
|
|
bool is_leaf_function() const { return is_leaf_function_; }
|
|
const std::vector<int>& fp_offsets() const { return fp_offsets_; }
|
|
|
|
private:
|
|
bool is_leaf_function_;
|
|
std::vector<int> fp_offsets_;
|
|
};
|
|
|
|
class XdataEncoder {
|
|
public:
|
|
explicit XdataEncoder(const Assembler& assembler)
|
|
: assembler_(assembler), current_push_rbp_offset_(-1) {}
|
|
|
|
void onPushRbp();
|
|
void onMovRbpRsp();
|
|
|
|
BuiltinUnwindInfo unwinding_info() const {
|
|
return BuiltinUnwindInfo(fp_offsets_);
|
|
}
|
|
|
|
private:
|
|
const Assembler& assembler_;
|
|
std::vector<int> fp_offsets_;
|
|
int current_push_rbp_offset_;
|
|
};
|
|
|
|
} // namespace win64_unwindinfo
|
|
|
|
} // namespace internal
|
|
} // namespace v8
|
|
|
|
#endif // defined(V8_OS_WIN_X64)
|
|
|
|
#endif // V8_UNWINDING_INFO_WIN64_H_
|