1 /* 2 * Copyright (C) 2016 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 #ifndef ART_COMPILER_UTILS_X86_64_JNI_MACRO_ASSEMBLER_X86_64_H_ 18 #define ART_COMPILER_UTILS_X86_64_JNI_MACRO_ASSEMBLER_X86_64_H_ 19 20 #include <vector> 21 22 #include "assembler_x86_64.h" 23 #include "base/arena_containers.h" 24 #include "base/array_ref.h" 25 #include "base/enums.h" 26 #include "base/macros.h" 27 #include "offsets.h" 28 #include "utils/assembler.h" 29 #include "utils/jni_macro_assembler.h" 30 31 namespace art { 32 namespace x86_64 { 33 34 class X86_64JNIMacroAssembler FINAL : public JNIMacroAssemblerFwd<X86_64Assembler, 35 PointerSize::k64> { 36 public: X86_64JNIMacroAssembler(ArenaAllocator * arena)37 explicit X86_64JNIMacroAssembler(ArenaAllocator* arena) 38 : JNIMacroAssemblerFwd<X86_64Assembler, PointerSize::k64>(arena) {} ~X86_64JNIMacroAssembler()39 virtual ~X86_64JNIMacroAssembler() {} 40 41 // 42 // Overridden common assembler high-level functionality 43 // 44 45 // Emit code that will create an activation on the stack 46 void BuildFrame(size_t frame_size, 47 ManagedRegister method_reg, 48 ArrayRef<const ManagedRegister> callee_save_regs, 49 const ManagedRegisterEntrySpills& entry_spills) OVERRIDE; 50 51 // Emit code that will remove an activation from the stack 52 void RemoveFrame(size_t frame_size, ArrayRef<const ManagedRegister> callee_save_regs) 53 OVERRIDE; 54 55 void IncreaseFrameSize(size_t adjust) OVERRIDE; 56 void DecreaseFrameSize(size_t adjust) OVERRIDE; 57 58 // Store routines 59 void Store(FrameOffset offs, ManagedRegister src, size_t size) OVERRIDE; 60 void StoreRef(FrameOffset dest, ManagedRegister src) OVERRIDE; 61 void StoreRawPtr(FrameOffset dest, ManagedRegister src) OVERRIDE; 62 63 void StoreImmediateToFrame(FrameOffset dest, uint32_t imm, ManagedRegister scratch) OVERRIDE; 64 65 void StoreStackOffsetToThread(ThreadOffset64 thr_offs, 66 FrameOffset fr_offs, 67 ManagedRegister scratch) OVERRIDE; 68 69 void StoreStackPointerToThread(ThreadOffset64 thr_offs) OVERRIDE; 70 71 void StoreSpanning(FrameOffset dest, 72 ManagedRegister src, 73 FrameOffset in_off, 74 ManagedRegister scratch) OVERRIDE; 75 76 // Load routines 77 void Load(ManagedRegister dest, FrameOffset src, size_t size) OVERRIDE; 78 79 void LoadFromThread(ManagedRegister dest, ThreadOffset64 src, size_t size) OVERRIDE; 80 81 void LoadRef(ManagedRegister dest, FrameOffset src) OVERRIDE; 82 83 void LoadRef(ManagedRegister dest, 84 ManagedRegister base, 85 MemberOffset offs, 86 bool unpoison_reference) OVERRIDE; 87 88 void LoadRawPtr(ManagedRegister dest, ManagedRegister base, Offset offs) OVERRIDE; 89 90 void LoadRawPtrFromThread(ManagedRegister dest, ThreadOffset64 offs) OVERRIDE; 91 92 // Copying routines 93 void Move(ManagedRegister dest, ManagedRegister src, size_t size); 94 95 void CopyRawPtrFromThread(FrameOffset fr_offs, 96 ThreadOffset64 thr_offs, 97 ManagedRegister scratch) OVERRIDE; 98 99 void CopyRawPtrToThread(ThreadOffset64 thr_offs, FrameOffset fr_offs, ManagedRegister scratch) 100 OVERRIDE; 101 102 void CopyRef(FrameOffset dest, FrameOffset src, ManagedRegister scratch) OVERRIDE; 103 104 void Copy(FrameOffset dest, FrameOffset src, ManagedRegister scratch, size_t size) OVERRIDE; 105 106 void Copy(FrameOffset dest, 107 ManagedRegister src_base, 108 Offset src_offset, 109 ManagedRegister scratch, 110 size_t size) OVERRIDE; 111 112 void Copy(ManagedRegister dest_base, 113 Offset dest_offset, 114 FrameOffset src, 115 ManagedRegister scratch, 116 size_t size) OVERRIDE; 117 118 void Copy(FrameOffset dest, 119 FrameOffset src_base, 120 Offset src_offset, 121 ManagedRegister scratch, 122 size_t size) OVERRIDE; 123 124 void Copy(ManagedRegister dest, 125 Offset dest_offset, 126 ManagedRegister src, 127 Offset src_offset, 128 ManagedRegister scratch, 129 size_t size) OVERRIDE; 130 131 void Copy(FrameOffset dest, 132 Offset dest_offset, 133 FrameOffset src, 134 Offset src_offset, 135 ManagedRegister scratch, 136 size_t size) OVERRIDE; 137 138 void MemoryBarrier(ManagedRegister) OVERRIDE; 139 140 // Sign extension 141 void SignExtend(ManagedRegister mreg, size_t size) OVERRIDE; 142 143 // Zero extension 144 void ZeroExtend(ManagedRegister mreg, size_t size) OVERRIDE; 145 146 // Exploit fast access in managed code to Thread::Current() 147 void GetCurrentThread(ManagedRegister tr) OVERRIDE; 148 void GetCurrentThread(FrameOffset dest_offset, ManagedRegister scratch) OVERRIDE; 149 150 // Set up out_reg to hold a Object** into the handle scope, or to be null if the 151 // value is null and null_allowed. in_reg holds a possibly stale reference 152 // that can be used to avoid loading the handle scope entry to see if the value is 153 // null. 154 void CreateHandleScopeEntry(ManagedRegister out_reg, 155 FrameOffset handlescope_offset, 156 ManagedRegister in_reg, 157 bool null_allowed) OVERRIDE; 158 159 // Set up out_off to hold a Object** into the handle scope, or to be null if the 160 // value is null and null_allowed. 161 void CreateHandleScopeEntry(FrameOffset out_off, 162 FrameOffset handlescope_offset, 163 ManagedRegister scratch, 164 bool null_allowed) OVERRIDE; 165 166 // src holds a handle scope entry (Object**) load this into dst 167 virtual void LoadReferenceFromHandleScope(ManagedRegister dst, ManagedRegister src) OVERRIDE; 168 169 // Heap::VerifyObject on src. In some cases (such as a reference to this) we 170 // know that src may not be null. 171 void VerifyObject(ManagedRegister src, bool could_be_null) OVERRIDE; 172 void VerifyObject(FrameOffset src, bool could_be_null) OVERRIDE; 173 174 // Call to address held at [base+offset] 175 void Call(ManagedRegister base, Offset offset, ManagedRegister scratch) OVERRIDE; 176 void Call(FrameOffset base, Offset offset, ManagedRegister scratch) OVERRIDE; 177 void CallFromThread(ThreadOffset64 offset, ManagedRegister scratch) OVERRIDE; 178 179 // Generate code to check if Thread::Current()->exception_ is non-null 180 // and branch to a ExceptionSlowPath if it is. 181 void ExceptionPoll(ManagedRegister scratch, size_t stack_adjust) OVERRIDE; 182 183 // Create a new label that can be used with Jump/Bind calls. 184 std::unique_ptr<JNIMacroLabel> CreateLabel() OVERRIDE; 185 // Emit an unconditional jump to the label. 186 void Jump(JNIMacroLabel* label) OVERRIDE; 187 // Emit a conditional jump to the label by applying a unary condition test to the register. 188 void Jump(JNIMacroLabel* label, JNIMacroUnaryCondition cond, ManagedRegister test) OVERRIDE; 189 // Code at this offset will serve as the target for the Jump call. 190 void Bind(JNIMacroLabel* label) OVERRIDE; 191 192 private: 193 DISALLOW_COPY_AND_ASSIGN(X86_64JNIMacroAssembler); 194 }; 195 196 class X86_64JNIMacroLabel FINAL 197 : public JNIMacroLabelCommon<X86_64JNIMacroLabel, 198 art::Label, 199 kX86_64> { 200 public: AsX86_64()201 art::Label* AsX86_64() { 202 return AsPlatformLabel(); 203 } 204 }; 205 206 } // namespace x86_64 207 } // namespace art 208 209 #endif // ART_COMPILER_UTILS_X86_64_JNI_MACRO_ASSEMBLER_X86_64_H_ 210