blob: d9ec03bd3711cfaffd597c18ce00287f91081384 [file] [log] [blame]
// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/globals.h"
#if defined(TARGET_ARCH_ARM64)
#include "vm/cpu.h"
#include "vm/cpuinfo.h"
#include "vm/simulator.h"
#if !defined(USING_SIMULATOR)
#include <sys/syscall.h> /* NOLINT */
#include <unistd.h> /* NOLINT */
#endif
namespace dart {
void CPU::FlushICache(uword start, uword size) {
#if !defined(USING_SIMULATOR)
// Nothing to do. Flushing no instructions.
if (size == 0) {
return;
}
// ARM recommends using the gcc intrinsic __clear_cache on Linux and Android.
// blogs.arm.com/software-enablement/141-caches-and-self-modifying-code/
#if defined(__linux__) || defined(ANDROID)
extern void __clear_cache(char*, char*);
char* beg = reinterpret_cast<char*>(start);
char* end = reinterpret_cast<char*>(start + size);
::__clear_cache(beg, end);
#else
#error FlushICache only tested/supported on Linux and Android
#endif
#endif
}
const char* CPU::Id() {
return
#if defined(USING_SIMULATOR)
"sim"
#endif // !defined(HOST_ARCH_ARM64)
"arm64";
}
const char* HostCPUFeatures::hardware_ = NULL;
#if defined(DEBUG)
bool HostCPUFeatures::initialized_ = false;
#endif
#if !defined(USING_SIMULATOR)
void HostCPUFeatures::InitOnce() {
CpuInfo::InitOnce();
hardware_ = CpuInfo::GetCpuModel();
#if defined(DEBUG)
initialized_ = true;
#endif
}
void HostCPUFeatures::Cleanup() {
DEBUG_ASSERT(initialized_);
#if defined(DEBUG)
initialized_ = false;
#endif
ASSERT(hardware_ != NULL);
free(const_cast<char*>(hardware_));
hardware_ = NULL;
CpuInfo::Cleanup();
}
#else // !defined(USING_SIMULATOR)
void HostCPUFeatures::InitOnce() {
CpuInfo::InitOnce();
hardware_ = CpuInfo::GetCpuModel();
#if defined(DEBUG)
initialized_ = true;
#endif
}
void HostCPUFeatures::Cleanup() {
DEBUG_ASSERT(initialized_);
#if defined(DEBUG)
initialized_ = false;
#endif
ASSERT(hardware_ != NULL);
free(const_cast<char*>(hardware_));
hardware_ = NULL;
CpuInfo::Cleanup();
}
#endif // !defined(USING_SIMULATOR)
} // namespace dart
#endif // defined TARGET_ARCH_ARM64