1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "compilers.h"
18
19#include "dex/mir_graph.h"
20#include "dex/quick/mir_to_lir.h"
21#include "elf_writer_quick.h"
22#include "mirror/art_method-inl.h"
23
24namespace art {
25
26extern "C" void ArtInitQuickCompilerContext(art::CompilerDriver* driver);
27extern "C" void ArtUnInitQuickCompilerContext(art::CompilerDriver* driver);
28extern "C" art::CompiledMethod* ArtQuickCompileMethod(art::CompilerDriver* driver,
29                                                      const art::DexFile::CodeItem* code_item,
30                                                      uint32_t access_flags,
31                                                      art::InvokeType invoke_type,
32                                                      uint16_t class_def_idx,
33                                                      uint32_t method_idx,
34                                                      jobject class_loader,
35                                                      const art::DexFile& dex_file);
36
37extern "C" art::CompiledMethod* ArtQuickJniCompileMethod(art::CompilerDriver* driver,
38                                                         uint32_t access_flags, uint32_t method_idx,
39                                                         const art::DexFile& dex_file);
40
41// Hack for CFI CIE initialization
42extern std::vector<uint8_t>* X86CFIInitialization(bool is_x86_64);
43
44void QuickCompiler::Init() const {
45  ArtInitQuickCompilerContext(GetCompilerDriver());
46}
47
48void QuickCompiler::UnInit() const {
49  ArtUnInitQuickCompilerContext(GetCompilerDriver());
50}
51
52CompiledMethod* QuickCompiler::Compile(const DexFile::CodeItem* code_item,
53                                       uint32_t access_flags,
54                                       InvokeType invoke_type,
55                                       uint16_t class_def_idx,
56                                       uint32_t method_idx,
57                                       jobject class_loader,
58                                       const DexFile& dex_file) const {
59  CompiledMethod* method = TryCompileWithSeaIR(code_item,
60                                               access_flags,
61                                               invoke_type,
62                                               class_def_idx,
63                                               method_idx,
64                                               class_loader,
65                                               dex_file);
66  if (method != nullptr) {
67    return method;
68  }
69
70  return ArtQuickCompileMethod(GetCompilerDriver(),
71                               code_item,
72                               access_flags,
73                               invoke_type,
74                               class_def_idx,
75                               method_idx,
76                               class_loader,
77                               dex_file);
78}
79
80CompiledMethod* QuickCompiler::JniCompile(uint32_t access_flags,
81                                          uint32_t method_idx,
82                                          const DexFile& dex_file) const {
83  return ArtQuickJniCompileMethod(GetCompilerDriver(), access_flags, method_idx, dex_file);
84}
85
86uintptr_t QuickCompiler::GetEntryPointOf(mirror::ArtMethod* method) const {
87  return reinterpret_cast<uintptr_t>(method->GetEntryPointFromQuickCompiledCode());
88}
89
90bool QuickCompiler::WriteElf(art::File* file,
91                             OatWriter* oat_writer,
92                             const std::vector<const art::DexFile*>& dex_files,
93                             const std::string& android_root,
94                             bool is_host) const {
95  return art::ElfWriterQuick::Create(file, oat_writer, dex_files, android_root, is_host,
96                                     *GetCompilerDriver());
97}
98
99Backend* QuickCompiler::GetCodeGenerator(CompilationUnit* cu, void* compilation_unit) const {
100  Mir2Lir* mir_to_lir = nullptr;
101  switch (cu->instruction_set) {
102    case kThumb2:
103      mir_to_lir = ArmCodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
104      break;
105    case kArm64:
106      mir_to_lir = Arm64CodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
107      break;
108    case kMips:
109      mir_to_lir = MipsCodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
110      break;
111    case kX86:
112      // Fall-through.
113    case kX86_64:
114      mir_to_lir = X86CodeGenerator(cu, cu->mir_graph.get(), &cu->arena);
115      break;
116    default:
117      LOG(FATAL) << "Unexpected instruction set: " << cu->instruction_set;
118  }
119
120  /* The number of compiler temporaries depends on backend so set it up now if possible */
121  if (mir_to_lir) {
122    size_t max_temps = mir_to_lir->GetMaxPossibleCompilerTemps();
123    bool set_max = cu->mir_graph->SetMaxAvailableNonSpecialCompilerTemps(max_temps);
124    CHECK(set_max);
125  }
126  return mir_to_lir;
127}
128
129std::vector<uint8_t>* QuickCompiler::GetCallFrameInformationInitialization(
130    const CompilerDriver& driver) const {
131  if (driver.GetInstructionSet() == kX86) {
132    return X86CFIInitialization(false);
133  }
134  if (driver.GetInstructionSet() == kX86_64) {
135    return X86CFIInitialization(true);
136  }
137  return nullptr;
138}
139
140CompiledMethod* OptimizingCompiler::Compile(const DexFile::CodeItem* code_item,
141                                            uint32_t access_flags,
142                                            InvokeType invoke_type,
143                                            uint16_t class_def_idx,
144                                            uint32_t method_idx,
145                                            jobject class_loader,
146                                            const DexFile& dex_file) const {
147  CompiledMethod* method = TryCompile(code_item, access_flags, invoke_type, class_def_idx,
148                                      method_idx, class_loader, dex_file);
149  if (method != nullptr) {
150    return method;
151  }
152
153  return QuickCompiler::Compile(code_item, access_flags, invoke_type, class_def_idx, method_idx,
154                                class_loader, dex_file);
155}
156
157}  // namespace art
158