zra@google.com
7c91e88e6e
When we detect ARMv6, instead of using movw and movt, this change loads each individual byte. Although this is not the best way to achieve this, a modification to store large constants in the object pool would be more invasive. Further, this change will be easier to back-out once ARMv6 is obsolete. R=regis@google.com Review URL: https://codereview.chromium.org//183803024 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@33442 260f80e4-7a28-3924-810f-c04153c831b5
129 lines
3.5 KiB
C++
129 lines
3.5 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_OS_LINUX)
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#include "vm/cpuinfo.h"
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#include "vm/cpuid.h"
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#include "vm/proccpuinfo.h"
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#include "platform/assert.h"
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// As with Windows, on IA32 and X64, we use the cpuid instruction.
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// The analogous instruction is privileged on ARM and MIPS, so we resort to
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// reading from /proc/cpuinfo.
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namespace dart {
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CpuInfoMethod CpuInfo::method_ = kCpuInfoDefault;
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const char* CpuInfo::fields_[kCpuInfoMax] = {0};
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void CpuInfo::InitOnce() {
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#if defined(HOST_ARCH_IA32) || defined(HOST_ARCH_X64)
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fields_[kCpuInfoProcessor] = "vendor_id";
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fields_[kCpuInfoModel] = "model name";
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fields_[kCpuInfoHardware] = "model name";
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fields_[kCpuInfoFeatures] = "flags";
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method_ = kCpuInfoCpuId;
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CpuId::InitOnce();
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#elif defined(HOST_ARCH_ARM)
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fields_[kCpuInfoProcessor] = "Processor";
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fields_[kCpuInfoModel] = "model name";
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fields_[kCpuInfoHardware] = "Hardware";
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fields_[kCpuInfoFeatures] = "Features";
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method_ = kCpuInfoSystem;
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ProcCpuInfo::InitOnce();
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#elif defined(HOST_ARCH_MIPS)
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fields_[kCpuInfoProcessor] = "system type";
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fields_[kCpuInfoModel] = "cpu model";
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fields_[kCpuInfoHardware] = "cpu model";
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fields_[kCpuInfoFeatures] = "ASEs implemented";
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method_ = kCpuInfoSystem;
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ProcCpuInfo::InitOnce();
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#else
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#error Unrecognized target architecture
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#endif
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}
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void CpuInfo::Cleanup() {
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if (method_ == kCpuInfoCpuId) {
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CpuId::Cleanup();
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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ProcCpuInfo::Cleanup();
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}
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}
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bool CpuInfo::FieldContains(CpuInfoIndices idx, const char* search_string) {
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if (method_ == kCpuInfoCpuId) {
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return strstr(CpuId::field(idx), search_string);
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::FieldContains(FieldName(idx), search_string);
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}
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}
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bool CpuInfo::FieldContainsByString(const char* field,
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const char* search_string) {
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if (method_ == kCpuInfoCpuId) {
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for (int i = 0; i < kCpuInfoMax; i++) {
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if (strcmp(field, fields_[i]) == 0) {
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return FieldContains(static_cast<CpuInfoIndices>(i), search_string);
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}
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}
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UNIMPLEMENTED();
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return false;
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::FieldContains(field, search_string);
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}
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}
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const char* CpuInfo::ExtractField(CpuInfoIndices idx) {
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if (method_ == kCpuInfoCpuId) {
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return CpuId::field(idx);
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::ExtractField(FieldName(idx));
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}
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}
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const char* CpuInfo::ExtractFieldByString(const char* field) {
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if (method_ == kCpuInfoCpuId) {
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for (int i = 0; i < kCpuInfoMax; i++) {
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if (strcmp(field, fields_[i]) == 0) {
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return ExtractField(static_cast<CpuInfoIndices>(i));
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}
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}
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UNIMPLEMENTED();
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return NULL;
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::ExtractField(field);
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}
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}
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bool CpuInfo::HasField(const char* field) {
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if (method_ == kCpuInfoCpuId) {
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return (strcmp(field, fields_[kCpuInfoProcessor]) == 0) ||
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(strcmp(field, fields_[kCpuInfoModel]) == 0) ||
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(strcmp(field, fields_[kCpuInfoHardware]) == 0) ||
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(strcmp(field, fields_[kCpuInfoFeatures]) == 0);
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} else {
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ASSERT(method_ == kCpuInfoSystem);
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return ProcCpuInfo::HasField(field);
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}
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}
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} // namespace dart
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#endif // defined(TARGET_OS_LINUX)
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