blob: 5b97d32d4cbda1661ba60f4a2cc3056a842c55db [file] [log] [blame]
// Copyright (c) 2013, 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_MIPS)
#include "vm/cpu.h"
#include "vm/cpuinfo.h"
#include "vm/simulator.h"
#if !defined(USING_SIMULATOR)
#include <asm/cachectl.h> /* NOLINT */
#include <sys/syscall.h> /* NOLINT */
#include <unistd.h> /* NOLINT */
#endif
namespace dart {
void CPU::FlushICache(uword start, uword size) {
#if !defined(USING_SIMULATOR)
int res;
// See http://www.linux-mips.org/wiki/Cacheflush_Syscall.
res = syscall(__NR_cacheflush, start, size, ICACHE);
ASSERT(res == 0);
#else // defined(HOST_ARCH_MIPS)
// When running in simulated mode we do not need to flush the ICache because
// we are not running on the actual hardware.
#endif // defined(HOST_ARCH_MIPS)
}
const char* CPU::Id() {
return
#if defined(USING_SIMULATOR)
"sim"
#endif // !defined(HOST_ARCH_MIPS)
"mips";
}
const char* HostCPUFeatures::hardware_ = NULL;
MIPSVersion HostCPUFeatures::mips_version_ = MIPSvUnknown;
#if defined(DEBUG)
bool HostCPUFeatures::initialized_ = false;
#endif
#if !defined(USING_SIMULATOR)
void HostCPUFeatures::InitOnce() {
CpuInfo::InitOnce();
hardware_ = CpuInfo::GetCpuModel();
// Has a floating point unit.
ASSERT(CpuInfo::FieldContains(kCpuInfoModel, "FPU"));
// We want to know the ISA version, but on MIPS, CpuInfo can't tell us, so
// we use the same ISA version that Dart's C++ compiler targeted.
#if defined(_MIPS_ARCH_MIPS32R2)
mips_version_ = MIPS32r2;
#elif defined(_MIPS_ARCH_MIPS32)
mips_version_ = MIPS32;
#endif
#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
void HostCPUFeatures::InitOnce() {
CpuInfo::InitOnce();
hardware_ = CpuInfo::GetCpuModel();
mips_version_ = MIPS32r2;
#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(HOST_ARCH_MIPS)
} // namespace dart
#endif // defined TARGET_ARCH_MIPS