mirror of
https://github.com/dart-lang/sdk
synced 2024-09-18 21:51:18 +00:00
436a06a381
Primarily, in Dart code, instead of using R31 as our stack pointer, on entry we copy it into a second register (R18) and use that as our stack pointer after moving R31 to the Dart stack limit. On calling back into C++ from Dart code, R31 is restored, and R18 is cached in the callee-saved register R26. R=regis@google.com Review URL: https://codereview.chromium.org//311903004 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@36930 260f80e4-7a28-3924-810f-c04153c831b5
79 lines
2 KiB
C++
79 lines
2 KiB
C++
// 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.
|
|
|
|
#ifndef VM_CPUINFO_H_
|
|
#define VM_CPUINFO_H_
|
|
|
|
#include "platform/assert.h"
|
|
#include "vm/allocation.h"
|
|
|
|
namespace dart {
|
|
|
|
// Indices into cpuinfo field name arrays.
|
|
enum CpuInfoIndices {
|
|
kCpuInfoProcessor = 0,
|
|
kCpuInfoModel = 1,
|
|
kCpuInfoHardware = 2,
|
|
kCpuInfoFeatures = 3,
|
|
kCpuInfoMax = 4,
|
|
};
|
|
|
|
// For Intel architectures, the method to use to get CPU information.
|
|
enum CpuInfoMethod {
|
|
// Use the cpuid instruction.
|
|
kCpuInfoCpuId,
|
|
|
|
// Use system calls.
|
|
kCpuInfoSystem,
|
|
|
|
// Use whatever the default is for a particular OS:
|
|
// Linux, Windows -> CpuId,
|
|
// Android, MacOS -> System.
|
|
kCpuInfoDefault,
|
|
};
|
|
|
|
class CpuInfo : public AllStatic {
|
|
public:
|
|
static void InitOnce();
|
|
static void Cleanup();
|
|
|
|
static const char* FieldName(CpuInfoIndices idx) {
|
|
ASSERT((idx >= 0) && (idx < kCpuInfoMax));
|
|
return fields_[idx];
|
|
}
|
|
|
|
// Returns true if the cpuinfo field contains the string.
|
|
static bool FieldContains(CpuInfoIndices idx, const char* search_string);
|
|
static bool FieldContainsByString(
|
|
const char* field, const char* search_string);
|
|
|
|
// Returns true if the cpuinfo field [field] exists and is non-empty.
|
|
static bool HasField(const char* field);
|
|
|
|
// Returns the field. Caller is responsible for freeing the result.
|
|
static const char* ExtractField(CpuInfoIndices idx);
|
|
static const char* ExtractFieldByString(const char* field);
|
|
|
|
// Returns the field describing the CPU model. Caller is responsible for
|
|
// freeing the result.
|
|
static const char* GetCpuModel() {
|
|
if (HasField(FieldName(kCpuInfoHardware))) {
|
|
return ExtractField(kCpuInfoHardware);
|
|
} else {
|
|
return "";
|
|
}
|
|
}
|
|
|
|
private:
|
|
// The method to use to acquire info about the CPU.
|
|
static CpuInfoMethod method_;
|
|
|
|
// Cpuinfo field names.
|
|
static const char* fields_[kCpuInfoMax];
|
|
};
|
|
|
|
} // namespace dart
|
|
|
|
#endif // VM_CPUINFO_H_
|