Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_X87_MACRO_ASSEMBLER_X87_H_ |
| 6 | #define V8_X87_MACRO_ASSEMBLER_X87_H_ |
| 7 | |
| 8 | #include "src/assembler.h" |
| 9 | #include "src/bailout-reason.h" |
| 10 | #include "src/frames.h" |
| 11 | #include "src/globals.h" |
| 12 | |
| 13 | namespace v8 { |
| 14 | namespace internal { |
| 15 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 16 | // Give alias names to registers for calling conventions. |
| 17 | const Register kReturnRegister0 = {Register::kCode_eax}; |
| 18 | const Register kReturnRegister1 = {Register::kCode_edx}; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 19 | const Register kReturnRegister2 = {Register::kCode_edi}; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 20 | const Register kJSFunctionRegister = {Register::kCode_edi}; |
| 21 | const Register kContextRegister = {Register::kCode_esi}; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 22 | const Register kAllocateSizeRegister = {Register::kCode_edx}; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 23 | const Register kInterpreterAccumulatorRegister = {Register::kCode_eax}; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 24 | const Register kInterpreterBytecodeOffsetRegister = {Register::kCode_ecx}; |
| 25 | const Register kInterpreterBytecodeArrayRegister = {Register::kCode_edi}; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 26 | const Register kInterpreterDispatchTableRegister = {Register::kCode_esi}; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 27 | const Register kJavaScriptCallArgCountRegister = {Register::kCode_eax}; |
| 28 | const Register kJavaScriptCallNewTargetRegister = {Register::kCode_edx}; |
| 29 | const Register kRuntimeCallFunctionRegister = {Register::kCode_ebx}; |
| 30 | const Register kRuntimeCallArgCountRegister = {Register::kCode_eax}; |
| 31 | |
| 32 | // Spill slots used by interpreter dispatch calling convention. |
| 33 | const int kInterpreterDispatchTableSpillSlot = -1; |
| 34 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | // Convenience for platform-independent signatures. We do not normally |
| 36 | // distinguish memory operands from other operands on ia32. |
| 37 | typedef Operand MemOperand; |
| 38 | |
| 39 | enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; |
| 40 | enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; |
| 41 | enum PointersToHereCheck { |
| 42 | kPointersToHereMaybeInteresting, |
| 43 | kPointersToHereAreAlwaysInteresting |
| 44 | }; |
| 45 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 46 | enum RegisterValueType { REGISTER_VALUE_IS_SMI, REGISTER_VALUE_IS_INT32 }; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 47 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 48 | enum class ReturnAddressState { kOnStack, kNotOnStack }; |
| 49 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 50 | #ifdef DEBUG |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 51 | bool AreAliased(Register reg1, Register reg2, Register reg3 = no_reg, |
| 52 | Register reg4 = no_reg, Register reg5 = no_reg, |
| 53 | Register reg6 = no_reg, Register reg7 = no_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 54 | Register reg8 = no_reg); |
| 55 | #endif |
| 56 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 57 | // MacroAssembler implements a collection of frequently used macros. |
| 58 | class MacroAssembler: public Assembler { |
| 59 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 60 | MacroAssembler(Isolate* isolate, void* buffer, int size, |
| 61 | CodeObjectRequired create_code_object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 62 | |
| 63 | void Load(Register dst, const Operand& src, Representation r); |
| 64 | void Store(Register src, const Operand& dst, Representation r); |
| 65 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 66 | // Load a register with a long value as efficiently as possible. |
| 67 | void Set(Register dst, int32_t x) { |
| 68 | if (x == 0) { |
| 69 | xor_(dst, dst); |
| 70 | } else { |
| 71 | mov(dst, Immediate(x)); |
| 72 | } |
| 73 | } |
| 74 | void Set(const Operand& dst, int32_t x) { mov(dst, Immediate(x)); } |
| 75 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 76 | // Operations on roots in the root-array. |
| 77 | void LoadRoot(Register destination, Heap::RootListIndex index); |
| 78 | void StoreRoot(Register source, Register scratch, Heap::RootListIndex index); |
| 79 | void CompareRoot(Register with, Register scratch, Heap::RootListIndex index); |
| 80 | // These methods can only be used with constant roots (i.e. non-writable |
| 81 | // and not in new space). |
| 82 | void CompareRoot(Register with, Heap::RootListIndex index); |
| 83 | void CompareRoot(const Operand& with, Heap::RootListIndex index); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 84 | void PushRoot(Heap::RootListIndex index); |
| 85 | |
| 86 | // Compare the object in a register to a value and jump if they are equal. |
| 87 | void JumpIfRoot(Register with, Heap::RootListIndex index, Label* if_equal, |
| 88 | Label::Distance if_equal_distance = Label::kFar) { |
| 89 | CompareRoot(with, index); |
| 90 | j(equal, if_equal, if_equal_distance); |
| 91 | } |
| 92 | void JumpIfRoot(const Operand& with, Heap::RootListIndex index, |
| 93 | Label* if_equal, |
| 94 | Label::Distance if_equal_distance = Label::kFar) { |
| 95 | CompareRoot(with, index); |
| 96 | j(equal, if_equal, if_equal_distance); |
| 97 | } |
| 98 | |
| 99 | // Compare the object in a register to a value and jump if they are not equal. |
| 100 | void JumpIfNotRoot(Register with, Heap::RootListIndex index, |
| 101 | Label* if_not_equal, |
| 102 | Label::Distance if_not_equal_distance = Label::kFar) { |
| 103 | CompareRoot(with, index); |
| 104 | j(not_equal, if_not_equal, if_not_equal_distance); |
| 105 | } |
| 106 | void JumpIfNotRoot(const Operand& with, Heap::RootListIndex index, |
| 107 | Label* if_not_equal, |
| 108 | Label::Distance if_not_equal_distance = Label::kFar) { |
| 109 | CompareRoot(with, index); |
| 110 | j(not_equal, if_not_equal, if_not_equal_distance); |
| 111 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 112 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 113 | // These functions do not arrange the registers in any particular order so |
| 114 | // they are not useful for calls that can cause a GC. The caller can |
| 115 | // exclude up to 3 registers that do not need to be saved and restored. |
| 116 | void PushCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1 = no_reg, |
| 117 | Register exclusion2 = no_reg, |
| 118 | Register exclusion3 = no_reg); |
| 119 | void PopCallerSaved(SaveFPRegsMode fp_mode, Register exclusion1 = no_reg, |
| 120 | Register exclusion2 = no_reg, |
| 121 | Register exclusion3 = no_reg); |
| 122 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 123 | // --------------------------------------------------------------------------- |
| 124 | // GC Support |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 125 | enum RememberedSetFinalAction { kReturnAtEnd, kFallThroughAtEnd }; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 126 | |
| 127 | // Record in the remembered set the fact that we have a pointer to new space |
| 128 | // at the address pointed to by the addr register. Only works if addr is not |
| 129 | // in new space. |
| 130 | void RememberedSetHelper(Register object, // Used for debug code. |
| 131 | Register addr, Register scratch, |
| 132 | SaveFPRegsMode save_fp, |
| 133 | RememberedSetFinalAction and_then); |
| 134 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 135 | void CheckPageFlag(Register object, Register scratch, int mask, Condition cc, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 136 | Label* condition_met, |
| 137 | Label::Distance condition_met_distance = Label::kFar); |
| 138 | |
| 139 | void CheckPageFlagForMap( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 140 | Handle<Map> map, int mask, Condition cc, Label* condition_met, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 141 | Label::Distance condition_met_distance = Label::kFar); |
| 142 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 143 | // Check if object is in new space. Jumps if the object is not in new space. |
| 144 | // The register scratch can be object itself, but scratch will be clobbered. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 145 | void JumpIfNotInNewSpace(Register object, Register scratch, Label* branch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 146 | Label::Distance distance = Label::kFar) { |
| 147 | InNewSpace(object, scratch, zero, branch, distance); |
| 148 | } |
| 149 | |
| 150 | // Check if object is in new space. Jumps if the object is in new space. |
| 151 | // The register scratch can be object itself, but it will be clobbered. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 152 | void JumpIfInNewSpace(Register object, Register scratch, Label* branch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 153 | Label::Distance distance = Label::kFar) { |
| 154 | InNewSpace(object, scratch, not_zero, branch, distance); |
| 155 | } |
| 156 | |
| 157 | // Check if an object has a given incremental marking color. Also uses ecx! |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 158 | void HasColor(Register object, Register scratch0, Register scratch1, |
| 159 | Label* has_color, Label::Distance has_color_distance, |
| 160 | int first_bit, int second_bit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 161 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 162 | void JumpIfBlack(Register object, Register scratch0, Register scratch1, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 163 | Label* on_black, |
| 164 | Label::Distance on_black_distance = Label::kFar); |
| 165 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 166 | // Checks the color of an object. If the object is white we jump to the |
| 167 | // incremental marker. |
| 168 | void JumpIfWhite(Register value, Register scratch1, Register scratch2, |
| 169 | Label* value_is_white, Label::Distance distance); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 170 | |
| 171 | // Notify the garbage collector that we wrote a pointer into an object. |
| 172 | // |object| is the object being stored into, |value| is the object being |
| 173 | // stored. value and scratch registers are clobbered by the operation. |
| 174 | // The offset is the offset from the start of the object, not the offset from |
| 175 | // the tagged HeapObject pointer. For use with FieldOperand(reg, off). |
| 176 | void RecordWriteField( |
| 177 | Register object, int offset, Register value, Register scratch, |
| 178 | SaveFPRegsMode save_fp, |
| 179 | RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
| 180 | SmiCheck smi_check = INLINE_SMI_CHECK, |
| 181 | PointersToHereCheck pointers_to_here_check_for_value = |
| 182 | kPointersToHereMaybeInteresting); |
| 183 | |
| 184 | // As above, but the offset has the tag presubtracted. For use with |
| 185 | // Operand(reg, off). |
| 186 | void RecordWriteContextSlot( |
| 187 | Register context, int offset, Register value, Register scratch, |
| 188 | SaveFPRegsMode save_fp, |
| 189 | RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
| 190 | SmiCheck smi_check = INLINE_SMI_CHECK, |
| 191 | PointersToHereCheck pointers_to_here_check_for_value = |
| 192 | kPointersToHereMaybeInteresting) { |
| 193 | RecordWriteField(context, offset + kHeapObjectTag, value, scratch, save_fp, |
| 194 | remembered_set_action, smi_check, |
| 195 | pointers_to_here_check_for_value); |
| 196 | } |
| 197 | |
| 198 | // Notify the garbage collector that we wrote a pointer into a fixed array. |
| 199 | // |array| is the array being stored into, |value| is the |
| 200 | // object being stored. |index| is the array index represented as a |
| 201 | // Smi. All registers are clobbered by the operation RecordWriteArray |
| 202 | // filters out smis so it does not update the write barrier if the |
| 203 | // value is a smi. |
| 204 | void RecordWriteArray( |
| 205 | Register array, Register value, Register index, SaveFPRegsMode save_fp, |
| 206 | RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
| 207 | SmiCheck smi_check = INLINE_SMI_CHECK, |
| 208 | PointersToHereCheck pointers_to_here_check_for_value = |
| 209 | kPointersToHereMaybeInteresting); |
| 210 | |
| 211 | // For page containing |object| mark region covering |address| |
| 212 | // dirty. |object| is the object being stored into, |value| is the |
| 213 | // object being stored. The address and value registers are clobbered by the |
| 214 | // operation. RecordWrite filters out smis so it does not update the |
| 215 | // write barrier if the value is a smi. |
| 216 | void RecordWrite( |
| 217 | Register object, Register address, Register value, SaveFPRegsMode save_fp, |
| 218 | RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
| 219 | SmiCheck smi_check = INLINE_SMI_CHECK, |
| 220 | PointersToHereCheck pointers_to_here_check_for_value = |
| 221 | kPointersToHereMaybeInteresting); |
| 222 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 223 | // Notify the garbage collector that we wrote a code entry into a |
| 224 | // JSFunction. Only scratch is clobbered by the operation. |
| 225 | void RecordWriteCodeEntryField(Register js_function, Register code_entry, |
| 226 | Register scratch); |
| 227 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 228 | // For page containing |object| mark the region covering the object's map |
| 229 | // dirty. |object| is the object being stored into, |map| is the Map object |
| 230 | // that was stored. |
| 231 | void RecordWriteForMap(Register object, Handle<Map> map, Register scratch1, |
| 232 | Register scratch2, SaveFPRegsMode save_fp); |
| 233 | |
| 234 | // --------------------------------------------------------------------------- |
| 235 | // Debugger Support |
| 236 | |
| 237 | void DebugBreak(); |
| 238 | |
| 239 | // Generates function and stub prologue code. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 240 | void StubPrologue(StackFrame::Type type); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 241 | void Prologue(bool code_pre_aging); |
| 242 | |
| 243 | // Enter specific kind of exit frame. Expects the number of |
| 244 | // arguments in register eax and sets up the number of arguments in |
| 245 | // register edi and the pointer to the first argument in register |
| 246 | // esi. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 247 | void EnterExitFrame(int argc, bool save_doubles); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 248 | |
| 249 | void EnterApiExitFrame(int argc); |
| 250 | |
| 251 | // Leave the current exit frame. Expects the return value in |
| 252 | // register eax:edx (untouched) and the pointer to the first |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 253 | // argument in register esi (if pop_arguments == true). |
| 254 | void LeaveExitFrame(bool save_doubles, bool pop_arguments = true); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 255 | |
| 256 | // Leave the current exit frame. Expects the return value in |
| 257 | // register eax (untouched). |
| 258 | void LeaveApiExitFrame(bool restore_context); |
| 259 | |
| 260 | // Find the function context up the context chain. |
| 261 | void LoadContext(Register dst, int context_chain_length); |
| 262 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 263 | // Load the global proxy from the current context. |
| 264 | void LoadGlobalProxy(Register dst); |
| 265 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 266 | // Conditionally load the cached Array transitioned map of type |
| 267 | // transitioned_kind from the native context if the map in register |
| 268 | // map_in_out is the cached Array map in the native context of |
| 269 | // expected_kind. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 270 | void LoadTransitionedArrayMapConditional(ElementsKind expected_kind, |
| 271 | ElementsKind transitioned_kind, |
| 272 | Register map_in_out, |
| 273 | Register scratch, |
| 274 | Label* no_map_match); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 275 | |
| 276 | // Load the global function with the given index. |
| 277 | void LoadGlobalFunction(int index, Register function); |
| 278 | |
| 279 | // Load the initial map from the global function. The registers |
| 280 | // function and map can be the same. |
| 281 | void LoadGlobalFunctionInitialMap(Register function, Register map); |
| 282 | |
| 283 | // Push and pop the registers that can hold pointers. |
| 284 | void PushSafepointRegisters() { pushad(); } |
| 285 | void PopSafepointRegisters() { popad(); } |
| 286 | // Store the value in register/immediate src in the safepoint |
| 287 | // register stack slot for register dst. |
| 288 | void StoreToSafepointRegisterSlot(Register dst, Register src); |
| 289 | void StoreToSafepointRegisterSlot(Register dst, Immediate src); |
| 290 | void LoadFromSafepointRegisterSlot(Register dst, Register src); |
| 291 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 292 | // Nop, because x87 does not have a root register. |
| 293 | void InitializeRootRegister() {} |
| 294 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 295 | void LoadHeapObject(Register result, Handle<HeapObject> object); |
| 296 | void CmpHeapObject(Register reg, Handle<HeapObject> object); |
| 297 | void PushHeapObject(Handle<HeapObject> object); |
| 298 | |
| 299 | void LoadObject(Register result, Handle<Object> object) { |
| 300 | AllowDeferredHandleDereference heap_object_check; |
| 301 | if (object->IsHeapObject()) { |
| 302 | LoadHeapObject(result, Handle<HeapObject>::cast(object)); |
| 303 | } else { |
| 304 | Move(result, Immediate(object)); |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | void CmpObject(Register reg, Handle<Object> object) { |
| 309 | AllowDeferredHandleDereference heap_object_check; |
| 310 | if (object->IsHeapObject()) { |
| 311 | CmpHeapObject(reg, Handle<HeapObject>::cast(object)); |
| 312 | } else { |
| 313 | cmp(reg, Immediate(object)); |
| 314 | } |
| 315 | } |
| 316 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 317 | void CmpWeakValue(Register value, Handle<WeakCell> cell, Register scratch); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 318 | void GetWeakValue(Register value, Handle<WeakCell> cell); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 319 | void LoadWeakValue(Register value, Handle<WeakCell> cell, Label* miss); |
| 320 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 321 | // --------------------------------------------------------------------------- |
| 322 | // JavaScript invokes |
| 323 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 324 | // Removes current frame and its arguments from the stack preserving |
| 325 | // the arguments and a return address pushed to the stack for the next call. |
| 326 | // |ra_state| defines whether return address is already pushed to stack or |
| 327 | // not. Both |callee_args_count| and |caller_args_count_reg| do not include |
| 328 | // receiver. |callee_args_count| is not modified, |caller_args_count_reg| |
| 329 | // is trashed. |number_of_temp_values_after_return_address| specifies |
| 330 | // the number of words pushed to the stack after the return address. This is |
| 331 | // to allow "allocation" of scratch registers that this function requires |
| 332 | // by saving their values on the stack. |
| 333 | void PrepareForTailCall(const ParameterCount& callee_args_count, |
| 334 | Register caller_args_count_reg, Register scratch0, |
| 335 | Register scratch1, ReturnAddressState ra_state, |
| 336 | int number_of_temp_values_after_return_address); |
| 337 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 338 | // Invoke the JavaScript function code by either calling or jumping. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 339 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 340 | void InvokeFunctionCode(Register function, Register new_target, |
| 341 | const ParameterCount& expected, |
| 342 | const ParameterCount& actual, InvokeFlag flag, |
| 343 | const CallWrapper& call_wrapper); |
| 344 | |
| 345 | void FloodFunctionIfStepping(Register fun, Register new_target, |
| 346 | const ParameterCount& expected, |
| 347 | const ParameterCount& actual); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 348 | |
| 349 | // Invoke the JavaScript function in the given register. Changes the |
| 350 | // current context to the context in the function before invoking. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 351 | void InvokeFunction(Register function, Register new_target, |
| 352 | const ParameterCount& actual, InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 353 | const CallWrapper& call_wrapper); |
| 354 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 355 | void InvokeFunction(Register function, const ParameterCount& expected, |
| 356 | const ParameterCount& actual, InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 357 | const CallWrapper& call_wrapper); |
| 358 | |
| 359 | void InvokeFunction(Handle<JSFunction> function, |
| 360 | const ParameterCount& expected, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 361 | const ParameterCount& actual, InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 362 | const CallWrapper& call_wrapper); |
| 363 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 364 | void ShlPair(Register high, Register low, uint8_t imm8); |
| 365 | void ShlPair_cl(Register high, Register low); |
| 366 | void ShrPair(Register high, Register low, uint8_t imm8); |
| 367 | void ShrPair_cl(Register high, Register src); |
| 368 | void SarPair(Register high, Register low, uint8_t imm8); |
| 369 | void SarPair_cl(Register high, Register low); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 370 | |
| 371 | // Expression support |
| 372 | // Support for constant splitting. |
| 373 | bool IsUnsafeImmediate(const Immediate& x); |
| 374 | void SafeMove(Register dst, const Immediate& x); |
| 375 | void SafePush(const Immediate& x); |
| 376 | |
| 377 | // Compare object type for heap object. |
| 378 | // Incoming register is heap_object and outgoing register is map. |
| 379 | void CmpObjectType(Register heap_object, InstanceType type, Register map); |
| 380 | |
| 381 | // Compare instance type for map. |
| 382 | void CmpInstanceType(Register map, InstanceType type); |
| 383 | |
| 384 | // Check if a map for a JSObject indicates that the object has fast elements. |
| 385 | // Jump to the specified label if it does not. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 386 | void CheckFastElements(Register map, Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 387 | Label::Distance distance = Label::kFar); |
| 388 | |
| 389 | // Check if a map for a JSObject indicates that the object can have both smi |
| 390 | // and HeapObject elements. Jump to the specified label if it does not. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 391 | void CheckFastObjectElements(Register map, Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 392 | Label::Distance distance = Label::kFar); |
| 393 | |
| 394 | // Check if a map for a JSObject indicates that the object has fast smi only |
| 395 | // elements. Jump to the specified label if it does not. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 396 | void CheckFastSmiElements(Register map, Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 397 | Label::Distance distance = Label::kFar); |
| 398 | |
| 399 | // Check to see if maybe_number can be stored as a double in |
| 400 | // FastDoubleElements. If it can, store it at the index specified by key in |
| 401 | // the FastDoubleElements array elements, otherwise jump to fail. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 402 | void StoreNumberToDoubleElements(Register maybe_number, Register elements, |
| 403 | Register key, Register scratch, Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 404 | int offset = 0); |
| 405 | |
| 406 | // Compare an object's map with the specified map. |
| 407 | void CompareMap(Register obj, Handle<Map> map); |
| 408 | |
| 409 | // Check if the map of an object is equal to a specified map and branch to |
| 410 | // label if not. Skip the smi check if not required (object is known to be a |
| 411 | // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match |
| 412 | // against maps that are ElementsKind transition maps of the specified map. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 413 | void CheckMap(Register obj, Handle<Map> map, Label* fail, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 414 | SmiCheckType smi_check_type); |
| 415 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 416 | // Check if the map of an object is equal to a specified weak map and branch |
| 417 | // to a specified target if equal. Skip the smi check if not required |
| 418 | // (object is known to be a heap object) |
| 419 | void DispatchWeakMap(Register obj, Register scratch1, Register scratch2, |
| 420 | Handle<WeakCell> cell, Handle<Code> success, |
| 421 | SmiCheckType smi_check_type); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 422 | |
| 423 | // Check if the object in register heap_object is a string. Afterwards the |
| 424 | // register map contains the object map and the register instance_type |
| 425 | // contains the instance_type. The registers map and instance_type can be the |
| 426 | // same in which case it contains the instance type afterwards. Either of the |
| 427 | // registers map and instance_type can be the same as heap_object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 428 | Condition IsObjectStringType(Register heap_object, Register map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 429 | Register instance_type); |
| 430 | |
| 431 | // Check if the object in register heap_object is a name. Afterwards the |
| 432 | // register map contains the object map and the register instance_type |
| 433 | // contains the instance_type. The registers map and instance_type can be the |
| 434 | // same in which case it contains the instance type afterwards. Either of the |
| 435 | // registers map and instance_type can be the same as heap_object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 436 | Condition IsObjectNameType(Register heap_object, Register map, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 437 | Register instance_type); |
| 438 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 439 | // FCmp is similar to integer cmp, but requires unsigned |
| 440 | // jcc instructions (je, ja, jae, jb, jbe, je, and jz). |
| 441 | void FCmp(); |
| 442 | void FXamMinusZero(); |
| 443 | void FXamSign(); |
| 444 | void X87CheckIA(); |
| 445 | void X87SetRC(int rc); |
| 446 | void X87SetFPUCW(int cw); |
| 447 | |
| 448 | void ClampUint8(Register reg); |
| 449 | void ClampTOSToUint8(Register result_reg); |
| 450 | |
| 451 | void SlowTruncateToI(Register result_reg, Register input_reg, |
| 452 | int offset = HeapNumber::kValueOffset - kHeapObjectTag); |
| 453 | |
| 454 | void TruncateHeapNumberToI(Register result_reg, Register input_reg); |
| 455 | void TruncateX87TOSToI(Register result_reg); |
| 456 | |
| 457 | void X87TOSToI(Register result_reg, MinusZeroMode minus_zero_mode, |
| 458 | Label* lost_precision, Label* is_nan, Label* minus_zero, |
| 459 | Label::Distance dst = Label::kFar); |
| 460 | |
| 461 | // Smi tagging support. |
| 462 | void SmiTag(Register reg) { |
| 463 | STATIC_ASSERT(kSmiTag == 0); |
| 464 | STATIC_ASSERT(kSmiTagSize == 1); |
| 465 | add(reg, reg); |
| 466 | } |
| 467 | void SmiUntag(Register reg) { |
| 468 | sar(reg, kSmiTagSize); |
| 469 | } |
| 470 | |
| 471 | // Modifies the register even if it does not contain a Smi! |
| 472 | void SmiUntag(Register reg, Label* is_smi) { |
| 473 | STATIC_ASSERT(kSmiTagSize == 1); |
| 474 | sar(reg, kSmiTagSize); |
| 475 | STATIC_ASSERT(kSmiTag == 0); |
| 476 | j(not_carry, is_smi); |
| 477 | } |
| 478 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 479 | void LoadUint32NoSSE2(Register src) { |
| 480 | LoadUint32NoSSE2(Operand(src)); |
| 481 | } |
| 482 | void LoadUint32NoSSE2(const Operand& src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 483 | |
| 484 | // Jump the register contains a smi. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 485 | inline void JumpIfSmi(Register value, Label* smi_label, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 486 | Label::Distance distance = Label::kFar) { |
| 487 | test(value, Immediate(kSmiTagMask)); |
| 488 | j(zero, smi_label, distance); |
| 489 | } |
| 490 | // Jump if the operand is a smi. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 491 | inline void JumpIfSmi(Operand value, Label* smi_label, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 492 | Label::Distance distance = Label::kFar) { |
| 493 | test(value, Immediate(kSmiTagMask)); |
| 494 | j(zero, smi_label, distance); |
| 495 | } |
| 496 | // Jump if register contain a non-smi. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 497 | inline void JumpIfNotSmi(Register value, Label* not_smi_label, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 498 | Label::Distance distance = Label::kFar) { |
| 499 | test(value, Immediate(kSmiTagMask)); |
| 500 | j(not_zero, not_smi_label, distance); |
| 501 | } |
| 502 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 503 | // Jump if the value cannot be represented by a smi. |
| 504 | inline void JumpIfNotValidSmiValue(Register value, Register scratch, |
| 505 | Label* on_invalid, |
| 506 | Label::Distance distance = Label::kFar) { |
| 507 | mov(scratch, value); |
| 508 | add(scratch, Immediate(0x40000000U)); |
| 509 | j(sign, on_invalid, distance); |
| 510 | } |
| 511 | |
| 512 | // Jump if the unsigned integer value cannot be represented by a smi. |
| 513 | inline void JumpIfUIntNotValidSmiValue( |
| 514 | Register value, Label* on_invalid, |
| 515 | Label::Distance distance = Label::kFar) { |
| 516 | cmp(value, Immediate(0x40000000U)); |
| 517 | j(above_equal, on_invalid, distance); |
| 518 | } |
| 519 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 520 | void LoadInstanceDescriptors(Register map, Register descriptors); |
| 521 | void EnumLength(Register dst, Register map); |
| 522 | void NumberOfOwnDescriptors(Register dst, Register map); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 523 | void LoadAccessor(Register dst, Register holder, int accessor_index, |
| 524 | AccessorComponent accessor); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 525 | |
| 526 | template<typename Field> |
| 527 | void DecodeField(Register reg) { |
| 528 | static const int shift = Field::kShift; |
| 529 | static const int mask = Field::kMask >> Field::kShift; |
| 530 | if (shift != 0) { |
| 531 | sar(reg, shift); |
| 532 | } |
| 533 | and_(reg, Immediate(mask)); |
| 534 | } |
| 535 | |
| 536 | template<typename Field> |
| 537 | void DecodeFieldToSmi(Register reg) { |
| 538 | static const int shift = Field::kShift; |
| 539 | static const int mask = (Field::kMask >> Field::kShift) << kSmiTagSize; |
| 540 | STATIC_ASSERT((mask & (0x80000000u >> (kSmiTagSize - 1))) == 0); |
| 541 | STATIC_ASSERT(kSmiTag == 0); |
| 542 | if (shift < kSmiTagSize) { |
| 543 | shl(reg, kSmiTagSize - shift); |
| 544 | } else if (shift > kSmiTagSize) { |
| 545 | sar(reg, shift - kSmiTagSize); |
| 546 | } |
| 547 | and_(reg, Immediate(mask)); |
| 548 | } |
| 549 | |
| 550 | // Abort execution if argument is not a number, enabled via --debug-code. |
| 551 | void AssertNumber(Register object); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 552 | void AssertNotNumber(Register object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 553 | |
| 554 | // Abort execution if argument is not a smi, enabled via --debug-code. |
| 555 | void AssertSmi(Register object); |
| 556 | |
| 557 | // Abort execution if argument is a smi, enabled via --debug-code. |
| 558 | void AssertNotSmi(Register object); |
| 559 | |
| 560 | // Abort execution if argument is not a string, enabled via --debug-code. |
| 561 | void AssertString(Register object); |
| 562 | |
| 563 | // Abort execution if argument is not a name, enabled via --debug-code. |
| 564 | void AssertName(Register object); |
| 565 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 566 | // Abort execution if argument is not a JSFunction, enabled via --debug-code. |
| 567 | void AssertFunction(Register object); |
| 568 | |
| 569 | // Abort execution if argument is not a JSBoundFunction, |
| 570 | // enabled via --debug-code. |
| 571 | void AssertBoundFunction(Register object); |
| 572 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 573 | // Abort execution if argument is not a JSGeneratorObject, |
| 574 | // enabled via --debug-code. |
| 575 | void AssertGeneratorObject(Register object); |
| 576 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 577 | // Abort execution if argument is not a JSReceiver, enabled via --debug-code. |
| 578 | void AssertReceiver(Register object); |
| 579 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 580 | // Abort execution if argument is not undefined or an AllocationSite, enabled |
| 581 | // via --debug-code. |
| 582 | void AssertUndefinedOrAllocationSite(Register object); |
| 583 | |
| 584 | // --------------------------------------------------------------------------- |
| 585 | // Exception handling |
| 586 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 587 | // Push a new stack handler and link it into stack handler chain. |
| 588 | void PushStackHandler(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 589 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 590 | // Unlink the stack handler on top of the stack from the stack handler chain. |
| 591 | void PopStackHandler(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | |
| 593 | // --------------------------------------------------------------------------- |
| 594 | // Inline caching support |
| 595 | |
| 596 | // Generate code for checking access rights - used for security checks |
| 597 | // on access to global objects across environments. The holder register |
| 598 | // is left untouched, but the scratch register is clobbered. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 599 | void CheckAccessGlobalProxy(Register holder_reg, Register scratch1, |
| 600 | Register scratch2, Label* miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 601 | |
| 602 | void GetNumberHash(Register r0, Register scratch); |
| 603 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 604 | void LoadFromNumberDictionary(Label* miss, Register elements, Register key, |
| 605 | Register r0, Register r1, Register r2, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 606 | Register result); |
| 607 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 608 | // --------------------------------------------------------------------------- |
| 609 | // Allocation support |
| 610 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 611 | // Allocate an object in new space or old space. If the given space |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 612 | // is exhausted control continues at the gc_required label. The allocated |
| 613 | // object is returned in result and end of the new object is returned in |
| 614 | // result_end. The register scratch can be passed as no_reg in which case |
| 615 | // an additional object reference will be added to the reloc info. The |
| 616 | // returned pointers in result and result_end have not yet been tagged as |
| 617 | // heap objects. If result_contains_top_on_entry is true the content of |
| 618 | // result is known to be the allocation top on entry (could be result_end |
| 619 | // from a previous call). If result_contains_top_on_entry is true scratch |
| 620 | // should be no_reg as it is never used. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 621 | void Allocate(int object_size, Register result, Register result_end, |
| 622 | Register scratch, Label* gc_required, AllocationFlags flags); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 623 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 624 | void Allocate(int header_size, ScaleFactor element_size, |
| 625 | Register element_count, RegisterValueType element_count_type, |
| 626 | Register result, Register result_end, Register scratch, |
| 627 | Label* gc_required, AllocationFlags flags); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 628 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 629 | void Allocate(Register object_size, Register result, Register result_end, |
| 630 | Register scratch, Label* gc_required, AllocationFlags flags); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 631 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 632 | // FastAllocate is right now only used for folded allocations. It just |
| 633 | // increments the top pointer without checking against limit. This can only |
| 634 | // be done if it was proved earlier that the allocation will succeed. |
| 635 | void FastAllocate(int object_size, Register result, Register result_end, |
| 636 | AllocationFlags flags); |
| 637 | void FastAllocate(Register object_size, Register result, Register result_end, |
| 638 | AllocationFlags flags); |
| 639 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 640 | // Allocate a heap number in new space with undefined value. The |
| 641 | // register scratch2 can be passed as no_reg; the others must be |
| 642 | // valid registers. Returns tagged pointer in result register, or |
| 643 | // jumps to gc_required if new space is full. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 644 | void AllocateHeapNumber(Register result, Register scratch1, Register scratch2, |
| 645 | Label* gc_required, MutableMode mode = IMMUTABLE); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 646 | |
| 647 | // Allocate a sequential string. All the header fields of the string object |
| 648 | // are initialized. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 649 | void AllocateTwoByteString(Register result, Register length, |
| 650 | Register scratch1, Register scratch2, |
| 651 | Register scratch3, Label* gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 652 | void AllocateOneByteString(Register result, Register length, |
| 653 | Register scratch1, Register scratch2, |
| 654 | Register scratch3, Label* gc_required); |
| 655 | void AllocateOneByteString(Register result, int length, Register scratch1, |
| 656 | Register scratch2, Label* gc_required); |
| 657 | |
| 658 | // Allocate a raw cons string object. Only the map field of the result is |
| 659 | // initialized. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 660 | void AllocateTwoByteConsString(Register result, Register scratch1, |
| 661 | Register scratch2, Label* gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 662 | void AllocateOneByteConsString(Register result, Register scratch1, |
| 663 | Register scratch2, Label* gc_required); |
| 664 | |
| 665 | // Allocate a raw sliced string object. Only the map field of the result is |
| 666 | // initialized. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 667 | void AllocateTwoByteSlicedString(Register result, Register scratch1, |
| 668 | Register scratch2, Label* gc_required); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 669 | void AllocateOneByteSlicedString(Register result, Register scratch1, |
| 670 | Register scratch2, Label* gc_required); |
| 671 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 672 | // Allocate and initialize a JSValue wrapper with the specified {constructor} |
| 673 | // and {value}. |
| 674 | void AllocateJSValue(Register result, Register constructor, Register value, |
| 675 | Register scratch, Label* gc_required); |
| 676 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 677 | // Copy memory, byte-by-byte, from source to destination. Not optimized for |
| 678 | // long or aligned copies. |
| 679 | // The contents of index and scratch are destroyed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 680 | void CopyBytes(Register source, Register destination, Register length, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 681 | Register scratch); |
| 682 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 683 | // Initialize fields with filler values. Fields starting at |current_address| |
| 684 | // not including |end_address| are overwritten with the value in |filler|. At |
| 685 | // the end the loop, |current_address| takes the value of |end_address|. |
| 686 | void InitializeFieldsWithFiller(Register current_address, |
| 687 | Register end_address, Register filler); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 688 | |
| 689 | // --------------------------------------------------------------------------- |
| 690 | // Support functions. |
| 691 | |
| 692 | // Check a boolean-bit of a Smi field. |
| 693 | void BooleanBitTest(Register object, int field_offset, int bit_index); |
| 694 | |
| 695 | // Check if result is zero and op is negative. |
| 696 | void NegativeZeroTest(Register result, Register op, Label* then_label); |
| 697 | |
| 698 | // Check if result is zero and any of op1 and op2 are negative. |
| 699 | // Register scratch is destroyed, and it must be different from op2. |
| 700 | void NegativeZeroTest(Register result, Register op1, Register op2, |
| 701 | Register scratch, Label* then_label); |
| 702 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 703 | // Machine code version of Map::GetConstructor(). |
| 704 | // |temp| holds |result|'s map when done. |
| 705 | void GetMapConstructor(Register result, Register map, Register temp); |
| 706 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 707 | // Try to get function prototype of a function and puts the value in |
| 708 | // the result register. Checks that the function really is a |
| 709 | // function and jumps to the miss label if the fast checks fail. The |
| 710 | // function register will be untouched; the other registers may be |
| 711 | // clobbered. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 712 | void TryGetFunctionPrototype(Register function, Register result, |
| 713 | Register scratch, Label* miss); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 714 | |
| 715 | // Picks out an array index from the hash field. |
| 716 | // Register use: |
| 717 | // hash - holds the index's hash. Clobbered. |
| 718 | // index - holds the overwritten index on exit. |
| 719 | void IndexFromHash(Register hash, Register index); |
| 720 | |
| 721 | // --------------------------------------------------------------------------- |
| 722 | // Runtime calls |
| 723 | |
| 724 | // Call a code stub. Generate the code if necessary. |
| 725 | void CallStub(CodeStub* stub, TypeFeedbackId ast_id = TypeFeedbackId::None()); |
| 726 | |
| 727 | // Tail call a code stub (jump). Generate the code if necessary. |
| 728 | void TailCallStub(CodeStub* stub); |
| 729 | |
| 730 | // Return from a code stub after popping its arguments. |
| 731 | void StubReturn(int argc); |
| 732 | |
| 733 | // Call a runtime routine. |
| 734 | void CallRuntime(const Runtime::Function* f, int num_arguments, |
| 735 | SaveFPRegsMode save_doubles = kDontSaveFPRegs); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 736 | void CallRuntimeSaveDoubles(Runtime::FunctionId fid) { |
| 737 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 738 | CallRuntime(function, function->nargs, kSaveFPRegs); |
| 739 | } |
| 740 | |
| 741 | // Convenience function: Same as above, but takes the fid instead. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 742 | void CallRuntime(Runtime::FunctionId fid, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 743 | SaveFPRegsMode save_doubles = kDontSaveFPRegs) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 744 | const Runtime::Function* function = Runtime::FunctionForId(fid); |
| 745 | CallRuntime(function, function->nargs, save_doubles); |
| 746 | } |
| 747 | |
| 748 | // Convenience function: Same as above, but takes the fid instead. |
| 749 | void CallRuntime(Runtime::FunctionId fid, int num_arguments, |
| 750 | SaveFPRegsMode save_doubles = kDontSaveFPRegs) { |
| 751 | CallRuntime(Runtime::FunctionForId(fid), num_arguments, save_doubles); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 752 | } |
| 753 | |
| 754 | // Convenience function: call an external reference. |
| 755 | void CallExternalReference(ExternalReference ref, int num_arguments); |
| 756 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 757 | // Convenience function: tail call a runtime routine (jump). |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 758 | void TailCallRuntime(Runtime::FunctionId fid); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 759 | |
| 760 | // Before calling a C-function from generated code, align arguments on stack. |
| 761 | // After aligning the frame, arguments must be stored in esp[0], esp[4], |
| 762 | // etc., not pushed. The argument count assumes all arguments are word sized. |
| 763 | // Some compilers/platforms require the stack to be aligned when calling |
| 764 | // C++ code. |
| 765 | // Needs a scratch register to do some arithmetic. This register will be |
| 766 | // trashed. |
| 767 | void PrepareCallCFunction(int num_arguments, Register scratch); |
| 768 | |
| 769 | // Calls a C function and cleans up the space for arguments allocated |
| 770 | // by PrepareCallCFunction. The called function is not allowed to trigger a |
| 771 | // garbage collection, since that might move the code and invalidate the |
| 772 | // return address (unless this is somehow accounted for by the called |
| 773 | // function). |
| 774 | void CallCFunction(ExternalReference function, int num_arguments); |
| 775 | void CallCFunction(Register function, int num_arguments); |
| 776 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 777 | // Jump to a runtime routine. |
| 778 | void JumpToExternalReference(const ExternalReference& ext); |
| 779 | |
| 780 | // --------------------------------------------------------------------------- |
| 781 | // Utilities |
| 782 | |
| 783 | void Ret(); |
| 784 | |
| 785 | // Return and drop arguments from stack, where the number of arguments |
| 786 | // may be bigger than 2^16 - 1. Requires a scratch register. |
| 787 | void Ret(int bytes_dropped, Register scratch); |
| 788 | |
| 789 | // Emit code to discard a non-negative number of pointer-sized elements |
| 790 | // from the stack, clobbering only the esp register. |
| 791 | void Drop(int element_count); |
| 792 | |
| 793 | void Call(Label* target) { call(target); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 794 | void Call(Handle<Code> target, RelocInfo::Mode rmode) { call(target, rmode); } |
| 795 | void Jump(Handle<Code> target, RelocInfo::Mode rmode) { jmp(target, rmode); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 796 | void Push(Register src) { push(src); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 797 | void Push(const Operand& src) { push(src); } |
| 798 | void Push(Immediate value) { push(value); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 799 | void Pop(Register dst) { pop(dst); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 800 | void Pop(const Operand& dst) { pop(dst); } |
| 801 | void PushReturnAddressFrom(Register src) { push(src); } |
| 802 | void PopReturnAddressTo(Register dst) { pop(dst); } |
| 803 | |
| 804 | void Lzcnt(Register dst, Register src) { Lzcnt(dst, Operand(src)); } |
| 805 | void Lzcnt(Register dst, const Operand& src); |
| 806 | |
| 807 | void Tzcnt(Register dst, Register src) { Tzcnt(dst, Operand(src)); } |
| 808 | void Tzcnt(Register dst, const Operand& src); |
| 809 | |
| 810 | void Popcnt(Register dst, Register src) { Popcnt(dst, Operand(src)); } |
| 811 | void Popcnt(Register dst, const Operand& src); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 812 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 813 | // Move if the registers are not identical. |
| 814 | void Move(Register target, Register source); |
| 815 | |
| 816 | // Move a constant into a destination using the most efficient encoding. |
| 817 | void Move(Register dst, const Immediate& x); |
| 818 | void Move(const Operand& dst, const Immediate& x); |
| 819 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 820 | void Move(Register dst, Handle<Object> handle) { LoadObject(dst, handle); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 821 | void Move(Register dst, Smi* source) { Move(dst, Immediate(source)); } |
| 822 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 823 | // Push a handle value. |
| 824 | void Push(Handle<Object> handle) { push(Immediate(handle)); } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 825 | void Push(Smi* smi) { Push(Immediate(smi)); } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 826 | |
| 827 | Handle<Object> CodeObject() { |
| 828 | DCHECK(!code_object_.is_null()); |
| 829 | return code_object_; |
| 830 | } |
| 831 | |
| 832 | // Insert code to verify that the x87 stack has the specified depth (0-7) |
| 833 | void VerifyX87StackDepth(uint32_t depth); |
| 834 | |
| 835 | // Emit code for a truncating division by a constant. The dividend register is |
| 836 | // unchanged, the result is in edx, and eax gets clobbered. |
| 837 | void TruncatingDiv(Register dividend, int32_t divisor); |
| 838 | |
| 839 | // --------------------------------------------------------------------------- |
| 840 | // StatsCounter support |
| 841 | |
| 842 | void SetCounter(StatsCounter* counter, int value); |
| 843 | void IncrementCounter(StatsCounter* counter, int value); |
| 844 | void DecrementCounter(StatsCounter* counter, int value); |
| 845 | void IncrementCounter(Condition cc, StatsCounter* counter, int value); |
| 846 | void DecrementCounter(Condition cc, StatsCounter* counter, int value); |
| 847 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 848 | // --------------------------------------------------------------------------- |
| 849 | // Debugging |
| 850 | |
| 851 | // Calls Abort(msg) if the condition cc is not satisfied. |
| 852 | // Use --debug_code to enable. |
| 853 | void Assert(Condition cc, BailoutReason reason); |
| 854 | |
| 855 | void AssertFastElements(Register elements); |
| 856 | |
| 857 | // Like Assert(), but always enabled. |
| 858 | void Check(Condition cc, BailoutReason reason); |
| 859 | |
| 860 | // Print a message to stdout and abort execution. |
| 861 | void Abort(BailoutReason reason); |
| 862 | |
| 863 | // Check that the stack is aligned. |
| 864 | void CheckStackAlignment(); |
| 865 | |
| 866 | // Verify restrictions about code generated in stubs. |
| 867 | void set_generating_stub(bool value) { generating_stub_ = value; } |
| 868 | bool generating_stub() { return generating_stub_; } |
| 869 | void set_has_frame(bool value) { has_frame_ = value; } |
| 870 | bool has_frame() { return has_frame_; } |
| 871 | inline bool AllowThisStubCall(CodeStub* stub); |
| 872 | |
| 873 | // --------------------------------------------------------------------------- |
| 874 | // String utilities. |
| 875 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 876 | // Check whether the instance type represents a flat one-byte string. Jump to |
| 877 | // the label if not. If the instance type can be scratched specify same |
| 878 | // register for both instance type and scratch. |
| 879 | void JumpIfInstanceTypeIsNotSequentialOneByte( |
| 880 | Register instance_type, Register scratch, |
| 881 | Label* on_not_flat_one_byte_string); |
| 882 | |
| 883 | // Checks if both objects are sequential one-byte strings, and jumps to label |
| 884 | // if either is not. |
| 885 | void JumpIfNotBothSequentialOneByteStrings( |
| 886 | Register object1, Register object2, Register scratch1, Register scratch2, |
| 887 | Label* on_not_flat_one_byte_strings); |
| 888 | |
| 889 | // Checks if the given register or operand is a unique name |
| 890 | void JumpIfNotUniqueNameInstanceType(Register reg, Label* not_unique_name, |
| 891 | Label::Distance distance = Label::kFar) { |
| 892 | JumpIfNotUniqueNameInstanceType(Operand(reg), not_unique_name, distance); |
| 893 | } |
| 894 | |
| 895 | void JumpIfNotUniqueNameInstanceType(Operand operand, Label* not_unique_name, |
| 896 | Label::Distance distance = Label::kFar); |
| 897 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 898 | void EmitSeqStringSetCharCheck(Register string, Register index, |
| 899 | Register value, uint32_t encoding_mask); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 900 | |
| 901 | static int SafepointRegisterStackIndex(Register reg) { |
| 902 | return SafepointRegisterStackIndex(reg.code()); |
| 903 | } |
| 904 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 905 | // Load the type feedback vector from a JavaScript frame. |
| 906 | void EmitLoadTypeFeedbackVector(Register vector); |
| 907 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 908 | // Activation support. |
| 909 | void EnterFrame(StackFrame::Type type); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 910 | void EnterFrame(StackFrame::Type type, bool load_constant_pool_pointer_reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 911 | void LeaveFrame(StackFrame::Type type); |
| 912 | |
| 913 | // Expects object in eax and returns map with validated enum cache |
| 914 | // in eax. Assumes that any other register can be used as a scratch. |
| 915 | void CheckEnumCache(Label* call_runtime); |
| 916 | |
| 917 | // AllocationMemento support. Arrays may have an associated |
| 918 | // AllocationMemento object that can be checked for in order to pretransition |
| 919 | // to another type. |
| 920 | // On entry, receiver_reg should point to the array object. |
| 921 | // scratch_reg gets clobbered. |
| 922 | // If allocation info is present, conditional code is set to equal. |
| 923 | void TestJSArrayForAllocationMemento(Register receiver_reg, |
| 924 | Register scratch_reg, |
| 925 | Label* no_memento_found); |
| 926 | |
| 927 | void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, |
| 928 | Register scratch_reg, |
| 929 | Label* memento_found) { |
| 930 | Label no_memento_found; |
| 931 | TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, |
| 932 | &no_memento_found); |
| 933 | j(equal, memento_found); |
| 934 | bind(&no_memento_found); |
| 935 | } |
| 936 | |
| 937 | // Jumps to found label if a prototype map has dictionary elements. |
| 938 | void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, |
| 939 | Register scratch1, Label* found); |
| 940 | |
| 941 | private: |
| 942 | bool generating_stub_; |
| 943 | bool has_frame_; |
| 944 | // This handle will be patched with the code object on installation. |
| 945 | Handle<Object> code_object_; |
| 946 | |
| 947 | // Helper functions for generating invokes. |
| 948 | void InvokePrologue(const ParameterCount& expected, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 949 | const ParameterCount& actual, Label* done, |
| 950 | bool* definitely_mismatches, InvokeFlag flag, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 951 | Label::Distance done_distance, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 952 | const CallWrapper& call_wrapper); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 953 | |
| 954 | void EnterExitFramePrologue(); |
| 955 | void EnterExitFrameEpilogue(int argc, bool save_doubles); |
| 956 | |
| 957 | void LeaveExitFrameEpilogue(bool restore_context); |
| 958 | |
| 959 | // Allocation support helpers. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 960 | void LoadAllocationTopHelper(Register result, Register scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 961 | AllocationFlags flags); |
| 962 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 963 | void UpdateAllocationTopHelper(Register result_end, Register scratch, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 964 | AllocationFlags flags); |
| 965 | |
| 966 | // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 967 | void InNewSpace(Register object, Register scratch, Condition cc, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 968 | Label* condition_met, |
| 969 | Label::Distance condition_met_distance = Label::kFar); |
| 970 | |
| 971 | // Helper for finding the mark bits for an address. Afterwards, the |
| 972 | // bitmap register points at the word with the mark bits and the mask |
| 973 | // the position of the first bit. Uses ecx as scratch and leaves addr_reg |
| 974 | // unchanged. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 975 | inline void GetMarkBits(Register addr_reg, Register bitmap_reg, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 976 | Register mask_reg); |
| 977 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 978 | // Compute memory operands for safepoint stack slots. |
| 979 | Operand SafepointRegisterSlot(Register reg); |
| 980 | static int SafepointRegisterStackIndex(int reg_code); |
| 981 | |
| 982 | // Needs access to SafepointRegisterStackIndex for compiled frame |
| 983 | // traversal. |
| 984 | friend class StandardFrame; |
| 985 | }; |
| 986 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 987 | // The code patcher is used to patch (typically) small parts of code e.g. for |
| 988 | // debugging and other types of instrumentation. When using the code patcher |
| 989 | // the exact number of bytes specified must be emitted. Is not legal to emit |
| 990 | // relocation information. If any of these constraints are violated it causes |
| 991 | // an assertion. |
| 992 | class CodePatcher { |
| 993 | public: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 994 | CodePatcher(Isolate* isolate, byte* address, int size); |
| 995 | ~CodePatcher(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 996 | |
| 997 | // Macro assembler to emit code. |
| 998 | MacroAssembler* masm() { return &masm_; } |
| 999 | |
| 1000 | private: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1001 | byte* address_; // The address of the code being patched. |
| 1002 | int size_; // Number of bytes of the expected patch size. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1003 | MacroAssembler masm_; // Macro assembler used to generate the code. |
| 1004 | }; |
| 1005 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1006 | // ----------------------------------------------------------------------------- |
| 1007 | // Static helper functions. |
| 1008 | |
| 1009 | // Generate an Operand for loading a field from an object. |
| 1010 | inline Operand FieldOperand(Register object, int offset) { |
| 1011 | return Operand(object, offset - kHeapObjectTag); |
| 1012 | } |
| 1013 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1014 | // Generate an Operand for loading an indexed field from an object. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1015 | inline Operand FieldOperand(Register object, Register index, ScaleFactor scale, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1016 | int offset) { |
| 1017 | return Operand(object, index, scale, offset - kHeapObjectTag); |
| 1018 | } |
| 1019 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1020 | inline Operand FixedArrayElementOperand(Register array, Register index_as_smi, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1021 | int additional_offset = 0) { |
| 1022 | int offset = FixedArray::kHeaderSize + additional_offset * kPointerSize; |
| 1023 | return FieldOperand(array, index_as_smi, times_half_pointer_size, offset); |
| 1024 | } |
| 1025 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1026 | inline Operand ContextOperand(Register context, int index) { |
| 1027 | return Operand(context, Context::SlotOffset(index)); |
| 1028 | } |
| 1029 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1030 | inline Operand ContextOperand(Register context, Register index) { |
| 1031 | return Operand(context, index, times_pointer_size, Context::SlotOffset(0)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1032 | } |
| 1033 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1034 | inline Operand NativeContextOperand() { |
| 1035 | return ContextOperand(esi, Context::NATIVE_CONTEXT_INDEX); |
| 1036 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1037 | |
| 1038 | #ifdef GENERATED_CODE_COVERAGE |
| 1039 | extern void LogGeneratedCodeCoverage(const char* file_line); |
| 1040 | #define CODE_COVERAGE_STRINGIFY(x) #x |
| 1041 | #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) |
| 1042 | #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
| 1043 | #define ACCESS_MASM(masm) { \ |
| 1044 | byte* ia32_coverage_function = \ |
| 1045 | reinterpret_cast<byte*>(FUNCTION_ADDR(LogGeneratedCodeCoverage)); \ |
| 1046 | masm->pushfd(); \ |
| 1047 | masm->pushad(); \ |
| 1048 | masm->push(Immediate(reinterpret_cast<int>(&__FILE_LINE__))); \ |
| 1049 | masm->call(ia32_coverage_function, RelocInfo::RUNTIME_ENTRY); \ |
| 1050 | masm->pop(eax); \ |
| 1051 | masm->popad(); \ |
| 1052 | masm->popfd(); \ |
| 1053 | } \ |
| 1054 | masm-> |
| 1055 | #else |
| 1056 | #define ACCESS_MASM(masm) masm-> |
| 1057 | #endif |
| 1058 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1059 | } // namespace internal |
| 1060 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1061 | |
| 1062 | #endif // V8_X87_MACRO_ASSEMBLER_X87_H_ |