1// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#include "vm/globals.h"
6#if defined(TARGET_ARCH_IA32)
7
8#include "vm/cpu.h"
9#include "vm/cpu_ia32.h"
10
11#include "vm/compiler/assembler/assembler.h"
12#include "vm/constants.h"
13#include "vm/cpuinfo.h"
14#include "vm/heap/heap.h"
15#include "vm/isolate.h"
16#include "vm/object.h"
17
18namespace dart {
19
20DEFINE_FLAG(bool, use_sse41, true, "Use SSE 4.1 if available");
21
22void CPU::FlushICache(uword start, uword size) {
23 // Nothing to be done here.
24}
25
26const char* CPU::Id() {
27 return "ia32";
28}
29
30const char* HostCPUFeatures::hardware_ = nullptr;
31bool HostCPUFeatures::sse2_supported_ = false;
32bool HostCPUFeatures::sse4_1_supported_ = false;
33bool HostCPUFeatures::popcnt_supported_ = false;
34bool HostCPUFeatures::abm_supported_ = false;
35#if defined(DEBUG)
36bool HostCPUFeatures::initialized_ = false;
37#endif
38
39void HostCPUFeatures::Init() {
40 CpuInfo::Init();
41 hardware_ = CpuInfo::GetCpuModel();
42 sse2_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "sse2");
43 sse4_1_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "sse4_1") ||
44 CpuInfo::FieldContains(kCpuInfoFeatures, "sse4.1");
45 popcnt_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "popcnt");
46 abm_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "abm");
47#if defined(DEBUG)
48 initialized_ = true;
49#endif
50}
51
52void HostCPUFeatures::Cleanup() {
53 DEBUG_ASSERT(initialized_);
54#if defined(DEBUG)
55 initialized_ = false;
56#endif
57 ASSERT(hardware_ != NULL);
58 free(const_cast<char*>(hardware_));
59 hardware_ = NULL;
60 CpuInfo::Cleanup();
61}
62
63} // namespace dart
64
65#endif // defined TARGET_ARCH_IA32
66