3258b2690e
The "perf inject" command will place the generated function into a .text section, placed directly after the ELF header. As a result, source position addresses need to be adjusted according to the size of the ELF header, which is 0x40 for 64 bit architectures and 0x34 on 32 bit architectures. We would previously adjust the addresses with 0x40 regardless of the architecture. BUG= Review-Url: https://codereview.chromium.org/2783203005 Cr-Commit-Position: refs/heads/master@{#44325}
135 lines
4.4 KiB
C++
135 lines
4.4 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#ifndef V8_PERF_JIT_H_
|
|
#define V8_PERF_JIT_H_
|
|
|
|
#include "src/log.h"
|
|
|
|
namespace v8 {
|
|
namespace internal {
|
|
|
|
#if V8_OS_LINUX
|
|
|
|
// Linux perf tool logging support
|
|
class PerfJitLogger : public CodeEventLogger {
|
|
public:
|
|
PerfJitLogger();
|
|
virtual ~PerfJitLogger();
|
|
|
|
void CodeMoveEvent(AbstractCode* from, Address to) override;
|
|
void CodeDisableOptEvent(AbstractCode* code,
|
|
SharedFunctionInfo* shared) override {}
|
|
|
|
private:
|
|
void OpenJitDumpFile();
|
|
void CloseJitDumpFile();
|
|
void* OpenMarkerFile(int fd);
|
|
void CloseMarkerFile(void* marker_address);
|
|
|
|
uint64_t GetTimestamp();
|
|
void LogRecordedBuffer(AbstractCode* code, SharedFunctionInfo* shared,
|
|
const char* name, int length) override;
|
|
|
|
// Extension added to V8 log file name to get the low-level log name.
|
|
static const char kFilenameFormatString[];
|
|
static const int kFilenameBufferPadding;
|
|
|
|
// File buffer size of the low-level log. We don't use the default to
|
|
// minimize the associated overhead.
|
|
static const int kLogBufferSize = 2 * MB;
|
|
|
|
void LogWriteBytes(const char* bytes, int size);
|
|
void LogWriteHeader();
|
|
void LogWriteDebugInfo(Code* code, SharedFunctionInfo* shared);
|
|
void LogWriteUnwindingInfo(Code* code);
|
|
|
|
static const uint32_t kElfMachIA32 = 3;
|
|
static const uint32_t kElfMachX64 = 62;
|
|
static const uint32_t kElfMachARM = 40;
|
|
static const uint32_t kElfMachMIPS = 10;
|
|
static const uint32_t kElfMachARM64 = 183;
|
|
|
|
uint32_t GetElfMach() {
|
|
#if V8_TARGET_ARCH_IA32
|
|
return kElfMachIA32;
|
|
#elif V8_TARGET_ARCH_X64
|
|
return kElfMachX64;
|
|
#elif V8_TARGET_ARCH_ARM
|
|
return kElfMachARM;
|
|
#elif V8_TARGET_ARCH_MIPS
|
|
return kElfMachMIPS;
|
|
#elif V8_TARGET_ARCH_ARM64
|
|
return kElfMachARM64;
|
|
#else
|
|
UNIMPLEMENTED();
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
#if V8_TARGET_ARCH_32_BIT
|
|
static const int kElfHeaderSize = 0x34;
|
|
#elif V8_TARGET_ARCH_64_BIT
|
|
static const int kElfHeaderSize = 0x40;
|
|
#else
|
|
#error Unknown target architecture pointer size
|
|
#endif
|
|
|
|
// Per-process singleton file. We assume that there is one main isolate;
|
|
// to determine when it goes away, we keep reference count.
|
|
static base::LazyRecursiveMutex file_mutex_;
|
|
static FILE* perf_output_handle_;
|
|
static uint64_t reference_count_;
|
|
static void* marker_address_;
|
|
static uint64_t code_index_;
|
|
};
|
|
|
|
#else
|
|
|
|
// PerfJitLogger is only implemented on Linux
|
|
class PerfJitLogger : public CodeEventLogger {
|
|
public:
|
|
void CodeMoveEvent(AbstractCode* from, Address to) override {
|
|
UNIMPLEMENTED();
|
|
}
|
|
|
|
void CodeDisableOptEvent(AbstractCode* code,
|
|
SharedFunctionInfo* shared) override {
|
|
UNIMPLEMENTED();
|
|
}
|
|
|
|
void LogRecordedBuffer(AbstractCode* code, SharedFunctionInfo* shared,
|
|
const char* name, int length) override {
|
|
UNIMPLEMENTED();
|
|
}
|
|
};
|
|
|
|
#endif // V8_OS_LINUX
|
|
} // namespace internal
|
|
} // namespace v8
|
|
#endif
|