OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 5 #ifndef V8_PPC_MACRO_ASSEMBLER_PPC_H_ |
6 #define V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 6 #define V8_PPC_MACRO_ASSEMBLER_PPC_H_ |
7 | 7 |
8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
9 #include "src/bailout-reason.h" | 9 #include "src/bailout-reason.h" |
10 #include "src/frames.h" | 10 #include "src/frames.h" |
11 #include "src/globals.h" | 11 #include "src/globals.h" |
12 | 12 |
13 namespace v8 { | 13 namespace v8 { |
14 namespace internal { | 14 namespace internal { |
15 | 15 |
16 // ---------------------------------------------------------------------------- | 16 // ---------------------------------------------------------------------------- |
17 // Static helper functions | 17 // Static helper functions |
18 | 18 |
19 // Generate a MemOperand for loading a field from an object. | 19 // Generate a MemOperand for loading a field from an object. |
20 inline MemOperand FieldMemOperand(Register object, int offset) { | 20 inline MemOperand FieldMemOperand(Register object, int offset) { |
21 return MemOperand(object, offset - kHeapObjectTag); | 21 return MemOperand(object, offset - kHeapObjectTag); |
22 } | 22 } |
23 | 23 |
24 | 24 |
25 // Give alias names to registers | |
26 const Register cp = { kRegister_r7_Code }; // JavaScript context pointer. | |
27 const Register pp = { kRegister_r8_Code }; // Constant pool pointer. | |
28 const Register kRootRegister = { kRegister_r10_Code }; // Roots array pointer. | |
29 | |
30 // Flags used for AllocateHeapNumber | 25 // Flags used for AllocateHeapNumber |
31 enum TaggingMode { | 26 enum TaggingMode { |
32 // Tag the result. | 27 // Tag the result. |
33 TAG_RESULT, | 28 TAG_RESULT, |
34 // Don't tag | 29 // Don't tag |
35 DONT_TAG_RESULT | 30 DONT_TAG_RESULT |
36 }; | 31 }; |
37 | 32 |
38 | 33 |
39 enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; | 34 enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; |
40 enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; | 35 enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; |
41 enum PointersToHereCheck { | 36 enum PointersToHereCheck { |
42 kPointersToHereMaybeInteresting, | 37 kPointersToHereMaybeInteresting, |
43 kPointersToHereAreAlwaysInteresting | 38 kPointersToHereAreAlwaysInteresting |
44 }; | 39 }; |
45 enum LinkRegisterStatus { kLRHasNotBeenSaved, kLRHasBeenSaved }; | 40 enum LinkRegisterStatus { kLRHasNotBeenSaved, kLRHasBeenSaved }; |
46 | 41 |
47 | 42 |
48 Register GetRegisterThatIsNotOneOf(Register reg1, | 43 Register GetRegisterThatIsNotOneOf(Register reg1, Register reg2 = no_reg, |
49 Register reg2 = no_reg, | |
50 Register reg3 = no_reg, | 44 Register reg3 = no_reg, |
51 Register reg4 = no_reg, | 45 Register reg4 = no_reg, |
52 Register reg5 = no_reg, | 46 Register reg5 = no_reg, |
53 Register reg6 = no_reg); | 47 Register reg6 = no_reg); |
54 | 48 |
55 | 49 |
56 #ifdef DEBUG | 50 #ifdef DEBUG |
57 bool AreAliased(Register reg1, | 51 bool AreAliased(Register reg1, Register reg2, Register reg3 = no_reg, |
58 Register reg2, | 52 Register reg4 = no_reg, Register reg5 = no_reg, |
59 Register reg3 = no_reg, | 53 Register reg6 = no_reg, Register reg7 = no_reg, |
60 Register reg4 = no_reg, | |
61 Register reg5 = no_reg, | |
62 Register reg6 = no_reg, | |
63 Register reg7 = no_reg, | |
64 Register reg8 = no_reg); | 54 Register reg8 = no_reg); |
65 #endif | 55 #endif |
66 | 56 |
| 57 // These exist to provide portability between 32 and 64bit |
| 58 #if V8_TARGET_ARCH_PPC64 |
| 59 #define LoadPU ldu |
| 60 #define LoadPX ldx |
| 61 #define LoadPUX ldux |
| 62 #define StorePU stdu |
| 63 #define StorePX stdx |
| 64 #define StorePUX stdux |
| 65 #define ShiftLeftImm sldi |
| 66 #define ShiftRightImm srdi |
| 67 #define ClearLeftImm clrldi |
| 68 #define ClearRightImm clrrdi |
| 69 #define ShiftRightArithImm sradi |
| 70 #define ShiftLeft_ sld |
| 71 #define ShiftRight_ srd |
| 72 #define ShiftRightArith srad |
| 73 #define Mul mulld |
| 74 #define Div divd |
| 75 #else |
| 76 #define LoadPU lwzu |
| 77 #define LoadPX lwzx |
| 78 #define LoadPUX lwzux |
| 79 #define StorePU stwu |
| 80 #define StorePX stwx |
| 81 #define StorePUX stwux |
| 82 #define ShiftLeftImm slwi |
| 83 #define ShiftRightImm srwi |
| 84 #define ClearLeftImm clrlwi |
| 85 #define ClearRightImm clrrwi |
| 86 #define ShiftRightArithImm srawi |
| 87 #define ShiftLeft_ slw |
| 88 #define ShiftRight_ srw |
| 89 #define ShiftRightArith sraw |
| 90 #define Mul mullw |
| 91 #define Div divw |
| 92 #endif |
67 | 93 |
68 enum TargetAddressStorageMode { | |
69 CAN_INLINE_TARGET_ADDRESS, | |
70 NEVER_INLINE_TARGET_ADDRESS | |
71 }; | |
72 | 94 |
73 // MacroAssembler implements a collection of frequently used macros. | 95 // MacroAssembler implements a collection of frequently used macros. |
74 class MacroAssembler: public Assembler { | 96 class MacroAssembler : public Assembler { |
75 public: | 97 public: |
76 // The isolate parameter can be NULL if the macro assembler should | 98 // The isolate parameter can be NULL if the macro assembler should |
77 // not use isolate-dependent functionality. In this case, it's the | 99 // not use isolate-dependent functionality. In this case, it's the |
78 // responsibility of the caller to never invoke such function on the | 100 // responsibility of the caller to never invoke such function on the |
79 // macro assembler. | 101 // macro assembler. |
80 MacroAssembler(Isolate* isolate, void* buffer, int size); | 102 MacroAssembler(Isolate* isolate, void* buffer, int size); |
81 | 103 |
82 | 104 |
83 // Returns the size of a call in instructions. Note, the value returned is | 105 // Returns the size of a call in instructions. Note, the value returned is |
84 // only valid as long as no entries are added to the constant pool between | 106 // only valid as long as no entries are added to the constant pool between |
85 // checking the call size and emitting the actual call. | 107 // checking the call size and emitting the actual call. |
86 static int CallSize(Register target, Condition cond = al); | 108 static int CallSize(Register target); |
87 int CallSize(Address target, RelocInfo::Mode rmode, Condition cond = al); | 109 int CallSize(Address target, RelocInfo::Mode rmode, Condition cond = al); |
88 int CallStubSize(CodeStub* stub, | 110 static int CallSizeNotPredictableCodeSize(Address target, |
89 TypeFeedbackId ast_id = TypeFeedbackId::None(), | |
90 Condition cond = al); | |
91 static int CallSizeNotPredictableCodeSize(Isolate* isolate, | |
92 Address target, | |
93 RelocInfo::Mode rmode, | 111 RelocInfo::Mode rmode, |
94 Condition cond = al); | 112 Condition cond = al); |
95 | 113 |
96 // Jump, Call, and Ret pseudo instructions implementing inter-working. | 114 // Jump, Call, and Ret pseudo instructions implementing inter-working. |
97 void Jump(Register target, Condition cond = al); | 115 void Jump(Register target); |
98 void Jump(Address target, RelocInfo::Mode rmode, Condition cond = al); | 116 void JumpToJSEntry(Register target); |
| 117 void Jump(Address target, RelocInfo::Mode rmode, Condition cond = al, |
| 118 CRegister cr = cr7); |
99 void Jump(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al); | 119 void Jump(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al); |
100 void Call(Register target, Condition cond = al); | 120 void Call(Register target); |
101 void Call(Address target, RelocInfo::Mode rmode, | 121 void CallJSEntry(Register target); |
102 Condition cond = al, | 122 void Call(Address target, RelocInfo::Mode rmode, Condition cond = al); |
103 TargetAddressStorageMode mode = CAN_INLINE_TARGET_ADDRESS); | |
104 int CallSize(Handle<Code> code, | 123 int CallSize(Handle<Code> code, |
105 RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, | 124 RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, |
106 TypeFeedbackId ast_id = TypeFeedbackId::None(), | 125 TypeFeedbackId ast_id = TypeFeedbackId::None(), |
107 Condition cond = al); | 126 Condition cond = al); |
108 void Call(Handle<Code> code, | 127 void Call(Handle<Code> code, RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, |
109 RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, | |
110 TypeFeedbackId ast_id = TypeFeedbackId::None(), | 128 TypeFeedbackId ast_id = TypeFeedbackId::None(), |
111 Condition cond = al, | 129 Condition cond = al); |
112 TargetAddressStorageMode mode = CAN_INLINE_TARGET_ADDRESS); | |
113 void Ret(Condition cond = al); | 130 void Ret(Condition cond = al); |
114 | 131 |
115 // Emit code to discard a non-negative number of pointer-sized elements | 132 // Emit code to discard a non-negative number of pointer-sized elements |
116 // from the stack, clobbering only the sp register. | 133 // from the stack, clobbering only the sp register. |
117 void Drop(int count, Condition cond = al); | 134 void Drop(int count, Condition cond = al); |
118 | 135 |
119 void Ret(int drop, Condition cond = al); | 136 void Ret(int drop, Condition cond = al); |
120 | 137 |
121 // Swap two registers. If the scratch register is omitted then a slightly | 138 void Call(Label* target); |
122 // less efficient form using xor instead of mov is emitted. | |
123 void Swap(Register reg1, | |
124 Register reg2, | |
125 Register scratch = no_reg, | |
126 Condition cond = al); | |
127 | 139 |
128 void Mls(Register dst, Register src1, Register src2, Register srcA, | 140 // Emit call to the code we are currently generating. |
129 Condition cond = al); | 141 void CallSelf() { |
130 void And(Register dst, Register src1, const Operand& src2, | 142 Handle<Code> self(reinterpret_cast<Code**>(CodeObject().location())); |
131 Condition cond = al); | 143 Call(self, RelocInfo::CODE_TARGET); |
132 void Ubfx(Register dst, Register src, int lsb, int width, | 144 } |
133 Condition cond = al); | |
134 void Sbfx(Register dst, Register src, int lsb, int width, | |
135 Condition cond = al); | |
136 // The scratch register is not used for ARMv7. | |
137 // scratch can be the same register as src (in which case it is trashed), but | |
138 // not the same as dst. | |
139 void Bfi(Register dst, | |
140 Register src, | |
141 Register scratch, | |
142 int lsb, | |
143 int width, | |
144 Condition cond = al); | |
145 void Bfc(Register dst, Register src, int lsb, int width, Condition cond = al); | |
146 void Usat(Register dst, int satpos, const Operand& src, | |
147 Condition cond = al); | |
148 | |
149 void Call(Label* target); | |
150 void Push(Register src) { push(src); } | |
151 void Pop(Register dst) { pop(dst); } | |
152 | 145 |
153 // Register move. May do nothing if the registers are identical. | 146 // Register move. May do nothing if the registers are identical. |
154 void Move(Register dst, Handle<Object> value); | 147 void Move(Register dst, Handle<Object> value); |
155 void Move(Register dst, Register src, Condition cond = al); | 148 void Move(Register dst, Register src, Condition cond = al); |
156 void Move(Register dst, const Operand& src, SBit sbit = LeaveCC, | 149 void Move(DoubleRegister dst, DoubleRegister src); |
157 Condition cond = al) { | |
158 if (!src.is_reg() || !src.rm().is(dst) || sbit != LeaveCC) { | |
159 mov(dst, src, sbit, cond); | |
160 } | |
161 } | |
162 void Move(DwVfpRegister dst, DwVfpRegister src); | |
163 | 150 |
164 void Load(Register dst, const MemOperand& src, Representation r); | 151 void MultiPush(RegList regs); |
165 void Store(Register src, const MemOperand& dst, Representation r); | 152 void MultiPop(RegList regs); |
166 | 153 |
167 // Load an object from the root table. | 154 // Load an object from the root table. |
168 void LoadRoot(Register destination, | 155 void LoadRoot(Register destination, Heap::RootListIndex index, |
169 Heap::RootListIndex index, | |
170 Condition cond = al); | 156 Condition cond = al); |
171 // Store an object to the root table. | 157 // Store an object to the root table. |
172 void StoreRoot(Register source, | 158 void StoreRoot(Register source, Heap::RootListIndex index, |
173 Heap::RootListIndex index, | |
174 Condition cond = al); | 159 Condition cond = al); |
175 | 160 |
176 // --------------------------------------------------------------------------- | 161 // --------------------------------------------------------------------------- |
177 // GC Support | 162 // GC Support |
178 | 163 |
179 void IncrementalMarkingRecordWriteHelper(Register object, | 164 void IncrementalMarkingRecordWriteHelper(Register object, Register value, |
180 Register value, | |
181 Register address); | 165 Register address); |
182 | 166 |
183 enum RememberedSetFinalAction { | 167 enum RememberedSetFinalAction { kReturnAtEnd, kFallThroughAtEnd }; |
184 kReturnAtEnd, | |
185 kFallThroughAtEnd | |
186 }; | |
187 | 168 |
188 // Record in the remembered set the fact that we have a pointer to new space | 169 // Record in the remembered set the fact that we have a pointer to new space |
189 // at the address pointed to by the addr register. Only works if addr is not | 170 // at the address pointed to by the addr register. Only works if addr is not |
190 // in new space. | 171 // in new space. |
191 void RememberedSetHelper(Register object, // Used for debug code. | 172 void RememberedSetHelper(Register object, // Used for debug code. |
192 Register addr, | 173 Register addr, Register scratch, |
193 Register scratch, | |
194 SaveFPRegsMode save_fp, | 174 SaveFPRegsMode save_fp, |
195 RememberedSetFinalAction and_then); | 175 RememberedSetFinalAction and_then); |
196 | 176 |
197 void CheckPageFlag(Register object, | 177 void CheckPageFlag(Register object, Register scratch, int mask, Condition cc, |
198 Register scratch, | |
199 int mask, | |
200 Condition cc, | |
201 Label* condition_met); | 178 Label* condition_met); |
202 | 179 |
203 void CheckMapDeprecated(Handle<Map> map, | 180 void CheckMapDeprecated(Handle<Map> map, Register scratch, |
204 Register scratch, | |
205 Label* if_deprecated); | 181 Label* if_deprecated); |
206 | 182 |
207 // Check if object is in new space. Jumps if the object is not in new space. | 183 // Check if object is in new space. Jumps if the object is not in new space. |
208 // The register scratch can be object itself, but scratch will be clobbered. | 184 // The register scratch can be object itself, but scratch will be clobbered. |
209 void JumpIfNotInNewSpace(Register object, | 185 void JumpIfNotInNewSpace(Register object, Register scratch, Label* branch) { |
210 Register scratch, | |
211 Label* branch) { | |
212 InNewSpace(object, scratch, ne, branch); | 186 InNewSpace(object, scratch, ne, branch); |
213 } | 187 } |
214 | 188 |
215 // Check if object is in new space. Jumps if the object is in new space. | 189 // Check if object is in new space. Jumps if the object is in new space. |
216 // The register scratch can be object itself, but it will be clobbered. | 190 // The register scratch can be object itself, but it will be clobbered. |
217 void JumpIfInNewSpace(Register object, | 191 void JumpIfInNewSpace(Register object, Register scratch, Label* branch) { |
218 Register scratch, | |
219 Label* branch) { | |
220 InNewSpace(object, scratch, eq, branch); | 192 InNewSpace(object, scratch, eq, branch); |
221 } | 193 } |
222 | 194 |
223 // Check if an object has a given incremental marking color. | 195 // Check if an object has a given incremental marking color. |
224 void HasColor(Register object, | 196 void HasColor(Register object, Register scratch0, Register scratch1, |
225 Register scratch0, | 197 Label* has_color, int first_bit, int second_bit); |
226 Register scratch1, | |
227 Label* has_color, | |
228 int first_bit, | |
229 int second_bit); | |
230 | 198 |
231 void JumpIfBlack(Register object, | 199 void JumpIfBlack(Register object, Register scratch0, Register scratch1, |
232 Register scratch0, | |
233 Register scratch1, | |
234 Label* on_black); | 200 Label* on_black); |
235 | 201 |
236 // Checks the color of an object. If the object is already grey or black | 202 // Checks the color of an object. If the object is already grey or black |
237 // then we just fall through, since it is already live. If it is white and | 203 // then we just fall through, since it is already live. If it is white and |
238 // we can determine that it doesn't need to be scanned, then we just mark it | 204 // we can determine that it doesn't need to be scanned, then we just mark it |
239 // black and fall through. For the rest we jump to the label so the | 205 // black and fall through. For the rest we jump to the label so the |
240 // incremental marker can fix its assumptions. | 206 // incremental marker can fix its assumptions. |
241 void EnsureNotWhite(Register object, | 207 void EnsureNotWhite(Register object, Register scratch1, Register scratch2, |
242 Register scratch1, | 208 Register scratch3, Label* object_is_white_and_not_data); |
243 Register scratch2, | |
244 Register scratch3, | |
245 Label* object_is_white_and_not_data); | |
246 | 209 |
247 // Detects conservatively whether an object is data-only, i.e. it does need to | 210 // Detects conservatively whether an object is data-only, i.e. it does need to |
248 // be scanned by the garbage collector. | 211 // be scanned by the garbage collector. |
249 void JumpIfDataObject(Register value, | 212 void JumpIfDataObject(Register value, Register scratch, |
250 Register scratch, | |
251 Label* not_data_object); | 213 Label* not_data_object); |
252 | 214 |
253 // Notify the garbage collector that we wrote a pointer into an object. | 215 // Notify the garbage collector that we wrote a pointer into an object. |
254 // |object| is the object being stored into, |value| is the object being | 216 // |object| is the object being stored into, |value| is the object being |
255 // stored. value and scratch registers are clobbered by the operation. | 217 // stored. value and scratch registers are clobbered by the operation. |
256 // The offset is the offset from the start of the object, not the offset from | 218 // The offset is the offset from the start of the object, not the offset from |
257 // the tagged HeapObject pointer. For use with FieldOperand(reg, off). | 219 // the tagged HeapObject pointer. For use with FieldOperand(reg, off). |
258 void RecordWriteField( | 220 void RecordWriteField( |
259 Register object, | 221 Register object, int offset, Register value, Register scratch, |
260 int offset, | 222 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp, |
261 Register value, | |
262 Register scratch, | |
263 LinkRegisterStatus lr_status, | |
264 SaveFPRegsMode save_fp, | |
265 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, | 223 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
266 SmiCheck smi_check = INLINE_SMI_CHECK, | 224 SmiCheck smi_check = INLINE_SMI_CHECK, |
267 PointersToHereCheck pointers_to_here_check_for_value = | 225 PointersToHereCheck pointers_to_here_check_for_value = |
268 kPointersToHereMaybeInteresting); | 226 kPointersToHereMaybeInteresting); |
269 | 227 |
270 // As above, but the offset has the tag presubtracted. For use with | 228 // As above, but the offset has the tag presubtracted. For use with |
271 // MemOperand(reg, off). | 229 // MemOperand(reg, off). |
272 inline void RecordWriteContextSlot( | 230 inline void RecordWriteContextSlot( |
273 Register context, | 231 Register context, int offset, Register value, Register scratch, |
274 int offset, | 232 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp, |
275 Register value, | |
276 Register scratch, | |
277 LinkRegisterStatus lr_status, | |
278 SaveFPRegsMode save_fp, | |
279 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, | 233 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
280 SmiCheck smi_check = INLINE_SMI_CHECK, | 234 SmiCheck smi_check = INLINE_SMI_CHECK, |
281 PointersToHereCheck pointers_to_here_check_for_value = | 235 PointersToHereCheck pointers_to_here_check_for_value = |
282 kPointersToHereMaybeInteresting) { | 236 kPointersToHereMaybeInteresting) { |
283 RecordWriteField(context, | 237 RecordWriteField(context, offset + kHeapObjectTag, value, scratch, |
284 offset + kHeapObjectTag, | 238 lr_status, save_fp, remembered_set_action, smi_check, |
285 value, | |
286 scratch, | |
287 lr_status, | |
288 save_fp, | |
289 remembered_set_action, | |
290 smi_check, | |
291 pointers_to_here_check_for_value); | 239 pointers_to_here_check_for_value); |
292 } | 240 } |
293 | 241 |
294 void RecordWriteForMap( | 242 void RecordWriteForMap(Register object, Register map, Register dst, |
295 Register object, | 243 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp); |
296 Register map, | |
297 Register dst, | |
298 LinkRegisterStatus lr_status, | |
299 SaveFPRegsMode save_fp); | |
300 | 244 |
301 // For a given |object| notify the garbage collector that the slot |address| | 245 // For a given |object| notify the garbage collector that the slot |address| |
302 // has been written. |value| is the object being stored. The value and | 246 // has been written. |value| is the object being stored. The value and |
303 // address registers are clobbered by the operation. | 247 // address registers are clobbered by the operation. |
304 void RecordWrite( | 248 void RecordWrite( |
305 Register object, | 249 Register object, Register address, Register value, |
306 Register address, | 250 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp, |
307 Register value, | |
308 LinkRegisterStatus lr_status, | |
309 SaveFPRegsMode save_fp, | |
310 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, | 251 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
311 SmiCheck smi_check = INLINE_SMI_CHECK, | 252 SmiCheck smi_check = INLINE_SMI_CHECK, |
312 PointersToHereCheck pointers_to_here_check_for_value = | 253 PointersToHereCheck pointers_to_here_check_for_value = |
313 kPointersToHereMaybeInteresting); | 254 kPointersToHereMaybeInteresting); |
314 | 255 |
| 256 void Push(Register src) { push(src); } |
| 257 |
315 // Push a handle. | 258 // Push a handle. |
316 void Push(Handle<Object> handle); | 259 void Push(Handle<Object> handle); |
317 void Push(Smi* smi) { Push(Handle<Smi>(smi, isolate())); } | 260 void Push(Smi* smi) { Push(Handle<Smi>(smi, isolate())); } |
318 | 261 |
319 // Push two registers. Pushes leftmost register first (to highest address). | 262 // Push two registers. Pushes leftmost register first (to highest address). |
320 void Push(Register src1, Register src2, Condition cond = al) { | 263 void Push(Register src1, Register src2) { |
321 DCHECK(!src1.is(src2)); | 264 StorePU(src2, MemOperand(sp, -2 * kPointerSize)); |
322 if (src1.code() > src2.code()) { | 265 StoreP(src1, MemOperand(sp, kPointerSize)); |
323 stm(db_w, sp, src1.bit() | src2.bit(), cond); | |
324 } else { | |
325 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | |
326 str(src2, MemOperand(sp, 4, NegPreIndex), cond); | |
327 } | |
328 } | 266 } |
329 | 267 |
330 // Push three registers. Pushes leftmost register first (to highest address). | 268 // Push three registers. Pushes leftmost register first (to highest address). |
331 void Push(Register src1, Register src2, Register src3, Condition cond = al) { | 269 void Push(Register src1, Register src2, Register src3) { |
332 DCHECK(!src1.is(src2)); | 270 StorePU(src3, MemOperand(sp, -3 * kPointerSize)); |
333 DCHECK(!src2.is(src3)); | 271 StoreP(src2, MemOperand(sp, kPointerSize)); |
334 DCHECK(!src1.is(src3)); | 272 StoreP(src1, MemOperand(sp, 2 * kPointerSize)); |
335 if (src1.code() > src2.code()) { | |
336 if (src2.code() > src3.code()) { | |
337 stm(db_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
338 } else { | |
339 stm(db_w, sp, src1.bit() | src2.bit(), cond); | |
340 str(src3, MemOperand(sp, 4, NegPreIndex), cond); | |
341 } | |
342 } else { | |
343 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | |
344 Push(src2, src3, cond); | |
345 } | |
346 } | 273 } |
347 | 274 |
348 // Push four registers. Pushes leftmost register first (to highest address). | 275 // Push four registers. Pushes leftmost register first (to highest address). |
349 void Push(Register src1, | 276 void Push(Register src1, Register src2, Register src3, Register src4) { |
350 Register src2, | 277 StorePU(src4, MemOperand(sp, -4 * kPointerSize)); |
351 Register src3, | 278 StoreP(src3, MemOperand(sp, kPointerSize)); |
352 Register src4, | 279 StoreP(src2, MemOperand(sp, 2 * kPointerSize)); |
353 Condition cond = al) { | 280 StoreP(src1, MemOperand(sp, 3 * kPointerSize)); |
354 DCHECK(!src1.is(src2)); | |
355 DCHECK(!src2.is(src3)); | |
356 DCHECK(!src1.is(src3)); | |
357 DCHECK(!src1.is(src4)); | |
358 DCHECK(!src2.is(src4)); | |
359 DCHECK(!src3.is(src4)); | |
360 if (src1.code() > src2.code()) { | |
361 if (src2.code() > src3.code()) { | |
362 if (src3.code() > src4.code()) { | |
363 stm(db_w, | |
364 sp, | |
365 src1.bit() | src2.bit() | src3.bit() | src4.bit(), | |
366 cond); | |
367 } else { | |
368 stm(db_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
369 str(src4, MemOperand(sp, 4, NegPreIndex), cond); | |
370 } | |
371 } else { | |
372 stm(db_w, sp, src1.bit() | src2.bit(), cond); | |
373 Push(src3, src4, cond); | |
374 } | |
375 } else { | |
376 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | |
377 Push(src2, src3, src4, cond); | |
378 } | |
379 } | 281 } |
380 | 282 |
| 283 // Push five registers. Pushes leftmost register first (to highest address). |
| 284 void Push(Register src1, Register src2, Register src3, Register src4, |
| 285 Register src5) { |
| 286 StorePU(src5, MemOperand(sp, -5 * kPointerSize)); |
| 287 StoreP(src4, MemOperand(sp, kPointerSize)); |
| 288 StoreP(src3, MemOperand(sp, 2 * kPointerSize)); |
| 289 StoreP(src2, MemOperand(sp, 3 * kPointerSize)); |
| 290 StoreP(src1, MemOperand(sp, 4 * kPointerSize)); |
| 291 } |
| 292 |
| 293 void Pop(Register dst) { pop(dst); } |
| 294 |
381 // Pop two registers. Pops rightmost register first (from lower address). | 295 // Pop two registers. Pops rightmost register first (from lower address). |
382 void Pop(Register src1, Register src2, Condition cond = al) { | 296 void Pop(Register src1, Register src2) { |
383 DCHECK(!src1.is(src2)); | 297 LoadP(src2, MemOperand(sp, 0)); |
384 if (src1.code() > src2.code()) { | 298 LoadP(src1, MemOperand(sp, kPointerSize)); |
385 ldm(ia_w, sp, src1.bit() | src2.bit(), cond); | 299 addi(sp, sp, Operand(2 * kPointerSize)); |
386 } else { | |
387 ldr(src2, MemOperand(sp, 4, PostIndex), cond); | |
388 ldr(src1, MemOperand(sp, 4, PostIndex), cond); | |
389 } | |
390 } | 300 } |
391 | 301 |
392 // Pop three registers. Pops rightmost register first (from lower address). | 302 // Pop three registers. Pops rightmost register first (from lower address). |
393 void Pop(Register src1, Register src2, Register src3, Condition cond = al) { | 303 void Pop(Register src1, Register src2, Register src3) { |
394 DCHECK(!src1.is(src2)); | 304 LoadP(src3, MemOperand(sp, 0)); |
395 DCHECK(!src2.is(src3)); | 305 LoadP(src2, MemOperand(sp, kPointerSize)); |
396 DCHECK(!src1.is(src3)); | 306 LoadP(src1, MemOperand(sp, 2 * kPointerSize)); |
397 if (src1.code() > src2.code()) { | 307 addi(sp, sp, Operand(3 * kPointerSize)); |
398 if (src2.code() > src3.code()) { | |
399 ldm(ia_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
400 } else { | |
401 ldr(src3, MemOperand(sp, 4, PostIndex), cond); | |
402 ldm(ia_w, sp, src1.bit() | src2.bit(), cond); | |
403 } | |
404 } else { | |
405 Pop(src2, src3, cond); | |
406 ldr(src1, MemOperand(sp, 4, PostIndex), cond); | |
407 } | |
408 } | 308 } |
409 | 309 |
410 // Pop four registers. Pops rightmost register first (from lower address). | 310 // Pop four registers. Pops rightmost register first (from lower address). |
411 void Pop(Register src1, | 311 void Pop(Register src1, Register src2, Register src3, Register src4) { |
412 Register src2, | 312 LoadP(src4, MemOperand(sp, 0)); |
413 Register src3, | 313 LoadP(src3, MemOperand(sp, kPointerSize)); |
414 Register src4, | 314 LoadP(src2, MemOperand(sp, 2 * kPointerSize)); |
415 Condition cond = al) { | 315 LoadP(src1, MemOperand(sp, 3 * kPointerSize)); |
416 DCHECK(!src1.is(src2)); | 316 addi(sp, sp, Operand(4 * kPointerSize)); |
417 DCHECK(!src2.is(src3)); | |
418 DCHECK(!src1.is(src3)); | |
419 DCHECK(!src1.is(src4)); | |
420 DCHECK(!src2.is(src4)); | |
421 DCHECK(!src3.is(src4)); | |
422 if (src1.code() > src2.code()) { | |
423 if (src2.code() > src3.code()) { | |
424 if (src3.code() > src4.code()) { | |
425 ldm(ia_w, | |
426 sp, | |
427 src1.bit() | src2.bit() | src3.bit() | src4.bit(), | |
428 cond); | |
429 } else { | |
430 ldr(src4, MemOperand(sp, 4, PostIndex), cond); | |
431 ldm(ia_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
432 } | |
433 } else { | |
434 Pop(src3, src4, cond); | |
435 ldm(ia_w, sp, src1.bit() | src2.bit(), cond); | |
436 } | |
437 } else { | |
438 Pop(src2, src3, src4, cond); | |
439 ldr(src1, MemOperand(sp, 4, PostIndex), cond); | |
440 } | |
441 } | 317 } |
442 | 318 |
443 // Push a fixed frame, consisting of lr, fp, constant pool (if | 319 // Pop five registers. Pops rightmost register first (from lower address). |
444 // FLAG_enable_ool_constant_pool), context and JS function / marker id if | 320 void Pop(Register src1, Register src2, Register src3, Register src4, |
445 // marker_reg is a valid register. | 321 Register src5) { |
| 322 LoadP(src5, MemOperand(sp, 0)); |
| 323 LoadP(src4, MemOperand(sp, kPointerSize)); |
| 324 LoadP(src3, MemOperand(sp, 2 * kPointerSize)); |
| 325 LoadP(src2, MemOperand(sp, 3 * kPointerSize)); |
| 326 LoadP(src1, MemOperand(sp, 4 * kPointerSize)); |
| 327 addi(sp, sp, Operand(5 * kPointerSize)); |
| 328 } |
| 329 |
| 330 // Push a fixed frame, consisting of lr, fp, context and |
| 331 // JS function / marker id if marker_reg is a valid register. |
446 void PushFixedFrame(Register marker_reg = no_reg); | 332 void PushFixedFrame(Register marker_reg = no_reg); |
447 void PopFixedFrame(Register marker_reg = no_reg); | 333 void PopFixedFrame(Register marker_reg = no_reg); |
448 | 334 |
449 // Push and pop the registers that can hold pointers, as defined by the | 335 // Push and pop the registers that can hold pointers, as defined by the |
450 // RegList constant kSafepointSavedRegisters. | 336 // RegList constant kSafepointSavedRegisters. |
451 void PushSafepointRegisters(); | 337 void PushSafepointRegisters(); |
452 void PopSafepointRegisters(); | 338 void PopSafepointRegisters(); |
453 // Store value in register src in the safepoint stack slot for | 339 // Store value in register src in the safepoint stack slot for |
454 // register dst. | 340 // register dst. |
455 void StoreToSafepointRegisterSlot(Register src, Register dst); | 341 void StoreToSafepointRegisterSlot(Register src, Register dst); |
456 // Load the value of the src register from its safepoint stack slot | 342 // Load the value of the src register from its safepoint stack slot |
457 // into register dst. | 343 // into register dst. |
458 void LoadFromSafepointRegisterSlot(Register dst, Register src); | 344 void LoadFromSafepointRegisterSlot(Register dst, Register src); |
459 | 345 |
460 // Load two consecutive registers with two consecutive memory locations. | 346 // Flush the I-cache from asm code. You should use CpuFeatures::FlushICache |
461 void Ldrd(Register dst1, | 347 // from C. |
462 Register dst2, | 348 // Does not handle errors. |
463 const MemOperand& src, | 349 void FlushICache(Register address, size_t size, Register scratch); |
464 Condition cond = al); | |
465 | |
466 // Store two consecutive registers to two consecutive memory locations. | |
467 void Strd(Register src1, | |
468 Register src2, | |
469 const MemOperand& dst, | |
470 Condition cond = al); | |
471 | |
472 // Ensure that FPSCR contains values needed by JavaScript. | |
473 // We need the NaNModeControlBit to be sure that operations like | |
474 // vadd and vsub generate the Canonical NaN (if a NaN must be generated). | |
475 // In VFP3 it will be always the Canonical NaN. | |
476 // In VFP2 it will be either the Canonical NaN or the negative version | |
477 // of the Canonical NaN. It doesn't matter if we have two values. The aim | |
478 // is to be sure to never generate the hole NaN. | |
479 void VFPEnsureFPSCRState(Register scratch); | |
480 | 350 |
481 // If the value is a NaN, canonicalize the value else, do nothing. | 351 // If the value is a NaN, canonicalize the value else, do nothing. |
482 void VFPCanonicalizeNaN(const DwVfpRegister dst, | 352 void CanonicalizeNaN(const DoubleRegister dst, const DoubleRegister src); |
483 const DwVfpRegister src, | 353 void CanonicalizeNaN(const DoubleRegister value) { |
484 const Condition cond = al); | 354 CanonicalizeNaN(value, value); |
485 void VFPCanonicalizeNaN(const DwVfpRegister value, | |
486 const Condition cond = al) { | |
487 VFPCanonicalizeNaN(value, value, cond); | |
488 } | 355 } |
489 | 356 |
490 // Compare double values and move the result to the normal condition flags. | 357 // Converts the integer (untagged smi) in |src| to a double, storing |
491 void VFPCompareAndSetFlags(const DwVfpRegister src1, | 358 // the result to |double_dst| |
492 const DwVfpRegister src2, | 359 void ConvertIntToDouble(Register src, DoubleRegister double_dst); |
493 const Condition cond = al); | |
494 void VFPCompareAndSetFlags(const DwVfpRegister src1, | |
495 const double src2, | |
496 const Condition cond = al); | |
497 | 360 |
498 // Compare double values and then load the fpscr flags to a register. | 361 // Converts the unsigned integer (untagged smi) in |src| to |
499 void VFPCompareAndLoadFlags(const DwVfpRegister src1, | 362 // a double, storing the result to |double_dst| |
500 const DwVfpRegister src2, | 363 void ConvertUnsignedIntToDouble(Register src, DoubleRegister double_dst); |
501 const Register fpscr_flags, | |
502 const Condition cond = al); | |
503 void VFPCompareAndLoadFlags(const DwVfpRegister src1, | |
504 const double src2, | |
505 const Register fpscr_flags, | |
506 const Condition cond = al); | |
507 | 364 |
508 void Vmov(const DwVfpRegister dst, | 365 // Converts the integer (untagged smi) in |src| to |
509 const double imm, | 366 // a float, storing the result in |dst| |
510 const Register scratch = no_reg); | 367 // Warning: The value in |int_scrach| will be changed in the process! |
| 368 void ConvertIntToFloat(const DoubleRegister dst, const Register src, |
| 369 const Register int_scratch); |
511 | 370 |
512 void VmovHigh(Register dst, DwVfpRegister src); | 371 // Converts the double_input to an integer. Note that, upon return, |
513 void VmovHigh(DwVfpRegister dst, Register src); | 372 // the contents of double_dst will also hold the fixed point representation. |
514 void VmovLow(Register dst, DwVfpRegister src); | 373 void ConvertDoubleToInt64(const DoubleRegister double_input, |
515 void VmovLow(DwVfpRegister dst, Register src); | 374 #if !V8_TARGET_ARCH_PPC64 |
516 | 375 const Register dst_hi, |
517 // Loads the number from object into dst register. | 376 #endif |
518 // If |object| is neither smi nor heap number, |not_number| is jumped to | 377 const Register dst, const DoubleRegister double_dst, |
519 // with |object| still intact. | 378 FPRoundingMode rounding_mode = kRoundToZero); |
520 void LoadNumber(Register object, | |
521 LowDwVfpRegister dst, | |
522 Register heap_number_map, | |
523 Register scratch, | |
524 Label* not_number); | |
525 | |
526 // Loads the number from object into double_dst in the double format. | |
527 // Control will jump to not_int32 if the value cannot be exactly represented | |
528 // by a 32-bit integer. | |
529 // Floating point value in the 32-bit integer range that are not exact integer | |
530 // won't be loaded. | |
531 void LoadNumberAsInt32Double(Register object, | |
532 DwVfpRegister double_dst, | |
533 Register heap_number_map, | |
534 Register scratch, | |
535 LowDwVfpRegister double_scratch, | |
536 Label* not_int32); | |
537 | |
538 // Loads the number from object into dst as a 32-bit integer. | |
539 // Control will jump to not_int32 if the object cannot be exactly represented | |
540 // by a 32-bit integer. | |
541 // Floating point value in the 32-bit integer range that are not exact integer | |
542 // won't be converted. | |
543 void LoadNumberAsInt32(Register object, | |
544 Register dst, | |
545 Register heap_number_map, | |
546 Register scratch, | |
547 DwVfpRegister double_scratch0, | |
548 LowDwVfpRegister double_scratch1, | |
549 Label* not_int32); | |
550 | 379 |
551 // Generates function and stub prologue code. | 380 // Generates function and stub prologue code. |
552 void StubPrologue(); | 381 void StubPrologue(int prologue_offset = 0); |
553 void Prologue(bool code_pre_aging); | 382 void Prologue(bool code_pre_aging, int prologue_offset = 0); |
554 | 383 |
555 // Enter exit frame. | 384 // Enter exit frame. |
556 // stack_space - extra stack space, used for alignment before call to C. | 385 // stack_space - extra stack space, used for alignment before call to C. |
557 void EnterExitFrame(bool save_doubles, int stack_space = 0); | 386 void EnterExitFrame(bool save_doubles, int stack_space = 0); |
558 | 387 |
559 // Leave the current exit frame. Expects the return value in r0. | 388 // Leave the current exit frame. Expects the return value in r0. |
560 // Expect the number of values, pushed prior to the exit frame, to | 389 // Expect the number of values, pushed prior to the exit frame, to |
561 // remove in a register (or no_reg, if there is nothing to remove). | 390 // remove in a register (or no_reg, if there is nothing to remove). |
562 void LeaveExitFrame(bool save_doubles, | 391 void LeaveExitFrame(bool save_doubles, Register argument_count, |
563 Register argument_count, | |
564 bool restore_context); | 392 bool restore_context); |
565 | 393 |
566 // Get the actual activation frame alignment for target environment. | 394 // Get the actual activation frame alignment for target environment. |
567 static int ActivationFrameAlignment(); | 395 static int ActivationFrameAlignment(); |
568 | 396 |
569 void LoadContext(Register dst, int context_chain_length); | 397 void LoadContext(Register dst, int context_chain_length); |
570 | 398 |
571 // Conditionally load the cached Array transitioned map of type | 399 // Conditionally load the cached Array transitioned map of type |
572 // transitioned_kind from the native context if the map in register | 400 // transitioned_kind from the native context if the map in register |
573 // map_in_out is the cached Array map in the native context of | 401 // map_in_out is the cached Array map in the native context of |
574 // expected_kind. | 402 // expected_kind. |
575 void LoadTransitionedArrayMapConditional( | 403 void LoadTransitionedArrayMapConditional(ElementsKind expected_kind, |
576 ElementsKind expected_kind, | 404 ElementsKind transitioned_kind, |
577 ElementsKind transitioned_kind, | 405 Register map_in_out, |
578 Register map_in_out, | 406 Register scratch, |
579 Register scratch, | 407 Label* no_map_match); |
580 Label* no_map_match); | |
581 | 408 |
582 void LoadGlobalFunction(int index, Register function); | 409 void LoadGlobalFunction(int index, Register function); |
583 | 410 |
584 // Load the initial map from the global function. The registers | 411 // Load the initial map from the global function. The registers |
585 // function and map can be the same, function is then overwritten. | 412 // function and map can be the same, function is then overwritten. |
586 void LoadGlobalFunctionInitialMap(Register function, | 413 void LoadGlobalFunctionInitialMap(Register function, Register map, |
587 Register map, | |
588 Register scratch); | 414 Register scratch); |
589 | 415 |
590 void InitializeRootRegister() { | 416 void InitializeRootRegister() { |
591 ExternalReference roots_array_start = | 417 ExternalReference roots_array_start = |
592 ExternalReference::roots_array_start(isolate()); | 418 ExternalReference::roots_array_start(isolate()); |
593 mov(kRootRegister, Operand(roots_array_start)); | 419 mov(kRootRegister, Operand(roots_array_start)); |
594 } | 420 } |
595 | 421 |
| 422 // ---------------------------------------------------------------- |
| 423 // new PPC macro-assembler interfaces that are slightly higher level |
| 424 // than assembler-ppc and may generate variable length sequences |
| 425 |
| 426 // load a literal signed int value <value> to GPR <dst> |
| 427 void LoadIntLiteral(Register dst, int value); |
| 428 |
| 429 // load an SMI value <value> to GPR <dst> |
| 430 void LoadSmiLiteral(Register dst, Smi* smi); |
| 431 |
| 432 // load a literal double value <value> to FPR <result> |
| 433 void LoadDoubleLiteral(DoubleRegister result, double value, Register scratch); |
| 434 |
| 435 void LoadWord(Register dst, const MemOperand& mem, Register scratch); |
| 436 |
| 437 void LoadWordArith(Register dst, const MemOperand& mem, |
| 438 Register scratch = no_reg); |
| 439 |
| 440 void StoreWord(Register src, const MemOperand& mem, Register scratch); |
| 441 |
| 442 void LoadHalfWord(Register dst, const MemOperand& mem, Register scratch); |
| 443 |
| 444 void StoreHalfWord(Register src, const MemOperand& mem, Register scratch); |
| 445 |
| 446 void LoadByte(Register dst, const MemOperand& mem, Register scratch); |
| 447 |
| 448 void StoreByte(Register src, const MemOperand& mem, Register scratch); |
| 449 |
| 450 void LoadRepresentation(Register dst, const MemOperand& mem, Representation r, |
| 451 Register scratch = no_reg); |
| 452 |
| 453 void StoreRepresentation(Register src, const MemOperand& mem, |
| 454 Representation r, Register scratch = no_reg); |
| 455 |
| 456 // Move values between integer and floating point registers. |
| 457 void MovIntToDouble(DoubleRegister dst, Register src, Register scratch); |
| 458 void MovUnsignedIntToDouble(DoubleRegister dst, Register src, |
| 459 Register scratch); |
| 460 void MovInt64ToDouble(DoubleRegister dst, |
| 461 #if !V8_TARGET_ARCH_PPC64 |
| 462 Register src_hi, |
| 463 #endif |
| 464 Register src); |
| 465 #if V8_TARGET_ARCH_PPC64 |
| 466 void MovInt64ComponentsToDouble(DoubleRegister dst, Register src_hi, |
| 467 Register src_lo, Register scratch); |
| 468 #endif |
| 469 void MovDoubleLowToInt(Register dst, DoubleRegister src); |
| 470 void MovDoubleHighToInt(Register dst, DoubleRegister src); |
| 471 void MovDoubleToInt64( |
| 472 #if !V8_TARGET_ARCH_PPC64 |
| 473 Register dst_hi, |
| 474 #endif |
| 475 Register dst, DoubleRegister src); |
| 476 |
| 477 void Add(Register dst, Register src, intptr_t value, Register scratch); |
| 478 void Cmpi(Register src1, const Operand& src2, Register scratch, |
| 479 CRegister cr = cr7); |
| 480 void Cmpli(Register src1, const Operand& src2, Register scratch, |
| 481 CRegister cr = cr7); |
| 482 void Cmpwi(Register src1, const Operand& src2, Register scratch, |
| 483 CRegister cr = cr7); |
| 484 void Cmplwi(Register src1, const Operand& src2, Register scratch, |
| 485 CRegister cr = cr7); |
| 486 void And(Register ra, Register rs, const Operand& rb, RCBit rc = LeaveRC); |
| 487 void Or(Register ra, Register rs, const Operand& rb, RCBit rc = LeaveRC); |
| 488 void Xor(Register ra, Register rs, const Operand& rb, RCBit rc = LeaveRC); |
| 489 |
| 490 void AddSmiLiteral(Register dst, Register src, Smi* smi, Register scratch); |
| 491 void SubSmiLiteral(Register dst, Register src, Smi* smi, Register scratch); |
| 492 void CmpSmiLiteral(Register src1, Smi* smi, Register scratch, |
| 493 CRegister cr = cr7); |
| 494 void CmplSmiLiteral(Register src1, Smi* smi, Register scratch, |
| 495 CRegister cr = cr7); |
| 496 void AndSmiLiteral(Register dst, Register src, Smi* smi, Register scratch, |
| 497 RCBit rc = LeaveRC); |
| 498 |
| 499 // Set new rounding mode RN to FPSCR |
| 500 void SetRoundingMode(FPRoundingMode RN); |
| 501 |
| 502 // reset rounding mode to default (kRoundToNearest) |
| 503 void ResetRoundingMode(); |
| 504 |
| 505 // These exist to provide portability between 32 and 64bit |
| 506 void LoadP(Register dst, const MemOperand& mem, Register scratch = no_reg); |
| 507 void StoreP(Register src, const MemOperand& mem, Register scratch = no_reg); |
| 508 |
596 // --------------------------------------------------------------------------- | 509 // --------------------------------------------------------------------------- |
597 // JavaScript invokes | 510 // JavaScript invokes |
598 | 511 |
599 // Invoke the JavaScript function code by either calling or jumping. | 512 // Invoke the JavaScript function code by either calling or jumping. |
600 void InvokeCode(Register code, | 513 void InvokeCode(Register code, const ParameterCount& expected, |
601 const ParameterCount& expected, | 514 const ParameterCount& actual, InvokeFlag flag, |
602 const ParameterCount& actual, | |
603 InvokeFlag flag, | |
604 const CallWrapper& call_wrapper); | 515 const CallWrapper& call_wrapper); |
605 | 516 |
606 // Invoke the JavaScript function in the given register. Changes the | 517 // Invoke the JavaScript function in the given register. Changes the |
607 // current context to the context in the function before invoking. | 518 // current context to the context in the function before invoking. |
608 void InvokeFunction(Register function, | 519 void InvokeFunction(Register function, const ParameterCount& actual, |
609 const ParameterCount& actual, | 520 InvokeFlag flag, const CallWrapper& call_wrapper); |
610 InvokeFlag flag, | |
611 const CallWrapper& call_wrapper); | |
612 | 521 |
613 void InvokeFunction(Register function, | 522 void InvokeFunction(Register function, const ParameterCount& expected, |
614 const ParameterCount& expected, | 523 const ParameterCount& actual, InvokeFlag flag, |
615 const ParameterCount& actual, | |
616 InvokeFlag flag, | |
617 const CallWrapper& call_wrapper); | 524 const CallWrapper& call_wrapper); |
618 | 525 |
619 void InvokeFunction(Handle<JSFunction> function, | 526 void InvokeFunction(Handle<JSFunction> function, |
620 const ParameterCount& expected, | 527 const ParameterCount& expected, |
621 const ParameterCount& actual, | 528 const ParameterCount& actual, InvokeFlag flag, |
622 InvokeFlag flag, | |
623 const CallWrapper& call_wrapper); | 529 const CallWrapper& call_wrapper); |
624 | 530 |
625 void IsObjectJSObjectType(Register heap_object, | 531 void IsObjectJSObjectType(Register heap_object, Register map, |
626 Register map, | 532 Register scratch, Label* fail); |
627 Register scratch, | |
628 Label* fail); | |
629 | 533 |
630 void IsInstanceJSObjectType(Register map, | 534 void IsInstanceJSObjectType(Register map, Register scratch, Label* fail); |
631 Register scratch, | |
632 Label* fail); | |
633 | 535 |
634 void IsObjectJSStringType(Register object, | 536 void IsObjectJSStringType(Register object, Register scratch, Label* fail); |
635 Register scratch, | |
636 Label* fail); | |
637 | 537 |
638 void IsObjectNameType(Register object, | 538 void IsObjectNameType(Register object, Register scratch, Label* fail); |
639 Register scratch, | |
640 Label* fail); | |
641 | 539 |
642 // --------------------------------------------------------------------------- | 540 // --------------------------------------------------------------------------- |
643 // Debugger Support | 541 // Debugger Support |
644 | 542 |
645 void DebugBreak(); | 543 void DebugBreak(); |
646 | 544 |
647 // --------------------------------------------------------------------------- | 545 // --------------------------------------------------------------------------- |
648 // Exception handling | 546 // Exception handling |
649 | 547 |
650 // Push a new try handler and link into try handler chain. | 548 // Push a new try handler and link into try handler chain. |
651 void PushTryHandler(StackHandler::Kind kind, int handler_index); | 549 void PushTryHandler(StackHandler::Kind kind, int handler_index); |
652 | 550 |
653 // Unlink the stack handler on top of the stack from the try handler chain. | 551 // Unlink the stack handler on top of the stack from the try handler chain. |
654 // Must preserve the result register. | 552 // Must preserve the result register. |
655 void PopTryHandler(); | 553 void PopTryHandler(); |
656 | 554 |
657 // Passes thrown value to the handler of top of the try handler chain. | 555 // Passes thrown value to the handler of top of the try handler chain. |
658 void Throw(Register value); | 556 void Throw(Register value); |
659 | 557 |
660 // Propagates an uncatchable exception to the top of the current JS stack's | 558 // Propagates an uncatchable exception to the top of the current JS stack's |
661 // handler chain. | 559 // handler chain. |
662 void ThrowUncatchable(Register value); | 560 void ThrowUncatchable(Register value); |
663 | 561 |
664 // --------------------------------------------------------------------------- | 562 // --------------------------------------------------------------------------- |
665 // Inline caching support | 563 // Inline caching support |
666 | 564 |
667 // Generate code for checking access rights - used for security checks | 565 // Generate code for checking access rights - used for security checks |
668 // on access to global objects across environments. The holder register | 566 // on access to global objects across environments. The holder register |
669 // is left untouched, whereas both scratch registers are clobbered. | 567 // is left untouched, whereas both scratch registers are clobbered. |
670 void CheckAccessGlobalProxy(Register holder_reg, | 568 void CheckAccessGlobalProxy(Register holder_reg, Register scratch, |
671 Register scratch, | |
672 Label* miss); | 569 Label* miss); |
673 | 570 |
674 void GetNumberHash(Register t0, Register scratch); | 571 void GetNumberHash(Register t0, Register scratch); |
675 | 572 |
676 void LoadFromNumberDictionary(Label* miss, | 573 void LoadFromNumberDictionary(Label* miss, Register elements, Register key, |
677 Register elements, | 574 Register result, Register t0, Register t1, |
678 Register key, | |
679 Register result, | |
680 Register t0, | |
681 Register t1, | |
682 Register t2); | 575 Register t2); |
683 | 576 |
684 | 577 |
685 inline void MarkCode(NopMarkerTypes type) { | 578 inline void MarkCode(NopMarkerTypes type) { nop(type); } |
686 nop(type); | |
687 } | |
688 | 579 |
689 // Check if the given instruction is a 'type' marker. | 580 // Check if the given instruction is a 'type' marker. |
690 // i.e. check if is is a mov r<type>, r<type> (referenced as nop(type)) | 581 // i.e. check if is is a mov r<type>, r<type> (referenced as nop(type)) |
691 // These instructions are generated to mark special location in the code, | 582 // These instructions are generated to mark special location in the code, |
692 // like some special IC code. | 583 // like some special IC code. |
693 static inline bool IsMarkedCode(Instr instr, int type) { | 584 static inline bool IsMarkedCode(Instr instr, int type) { |
694 DCHECK((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER)); | 585 DCHECK((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER)); |
695 return IsNop(instr, type); | 586 return IsNop(instr, type); |
696 } | 587 } |
697 | 588 |
698 | 589 |
699 static inline int GetCodeMarker(Instr instr) { | 590 static inline int GetCodeMarker(Instr instr) { |
700 int dst_reg_offset = 12; | 591 int dst_reg_offset = 12; |
701 int dst_mask = 0xf << dst_reg_offset; | 592 int dst_mask = 0xf << dst_reg_offset; |
702 int src_mask = 0xf; | 593 int src_mask = 0xf; |
703 int dst_reg = (instr & dst_mask) >> dst_reg_offset; | 594 int dst_reg = (instr & dst_mask) >> dst_reg_offset; |
704 int src_reg = instr & src_mask; | 595 int src_reg = instr & src_mask; |
705 uint32_t non_register_mask = ~(dst_mask | src_mask); | 596 uint32_t non_register_mask = ~(dst_mask | src_mask); |
706 uint32_t mov_mask = al | 13 << 21; | 597 uint32_t mov_mask = al | 13 << 21; |
707 | 598 |
708 // Return <n> if we have a mov rn rn, else return -1. | 599 // Return <n> if we have a mov rn rn, else return -1. |
709 int type = ((instr & non_register_mask) == mov_mask) && | 600 int type = ((instr & non_register_mask) == mov_mask) && |
710 (dst_reg == src_reg) && | 601 (dst_reg == src_reg) && (FIRST_IC_MARKER <= dst_reg) && |
711 (FIRST_IC_MARKER <= dst_reg) && (dst_reg < LAST_CODE_MARKER) | 602 (dst_reg < LAST_CODE_MARKER) |
712 ? src_reg | 603 ? src_reg |
713 : -1; | 604 : -1; |
714 DCHECK((type == -1) || | 605 DCHECK((type == -1) || |
715 ((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER))); | 606 ((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER))); |
716 return type; | 607 return type; |
717 } | 608 } |
718 | 609 |
719 | 610 |
720 // --------------------------------------------------------------------------- | 611 // --------------------------------------------------------------------------- |
721 // Allocation support | 612 // Allocation support |
722 | 613 |
723 // Allocate an object in new space or old pointer space. The object_size is | 614 // Allocate an object in new space or old pointer space. The object_size is |
724 // specified either in bytes or in words if the allocation flag SIZE_IN_WORDS | 615 // specified either in bytes or in words if the allocation flag SIZE_IN_WORDS |
725 // is passed. If the space is exhausted control continues at the gc_required | 616 // is passed. If the space is exhausted control continues at the gc_required |
726 // label. The allocated object is returned in result. If the flag | 617 // label. The allocated object is returned in result. If the flag |
727 // tag_allocated_object is true the result is tagged as as a heap object. | 618 // tag_allocated_object is true the result is tagged as as a heap object. |
728 // All registers are clobbered also when control continues at the gc_required | 619 // All registers are clobbered also when control continues at the gc_required |
729 // label. | 620 // label. |
730 void Allocate(int object_size, | 621 void Allocate(int object_size, Register result, Register scratch1, |
731 Register result, | 622 Register scratch2, Label* gc_required, AllocationFlags flags); |
732 Register scratch1, | |
733 Register scratch2, | |
734 Label* gc_required, | |
735 AllocationFlags flags); | |
736 | 623 |
737 void Allocate(Register object_size, | 624 void Allocate(Register object_size, Register result, Register scratch1, |
738 Register result, | 625 Register scratch2, Label* gc_required, AllocationFlags flags); |
739 Register scratch1, | |
740 Register scratch2, | |
741 Label* gc_required, | |
742 AllocationFlags flags); | |
743 | 626 |
744 // Undo allocation in new space. The object passed and objects allocated after | 627 // Undo allocation in new space. The object passed and objects allocated after |
745 // it will no longer be allocated. The caller must make sure that no pointers | 628 // it will no longer be allocated. The caller must make sure that no pointers |
746 // are left to the object(s) no longer allocated as they would be invalid when | 629 // are left to the object(s) no longer allocated as they would be invalid when |
747 // allocation is undone. | 630 // allocation is undone. |
748 void UndoAllocationInNewSpace(Register object, Register scratch); | 631 void UndoAllocationInNewSpace(Register object, Register scratch); |
749 | 632 |
750 | 633 |
751 void AllocateTwoByteString(Register result, | 634 void AllocateTwoByteString(Register result, Register length, |
752 Register length, | 635 Register scratch1, Register scratch2, |
753 Register scratch1, | 636 Register scratch3, Label* gc_required); |
754 Register scratch2, | |
755 Register scratch3, | |
756 Label* gc_required); | |
757 void AllocateOneByteString(Register result, Register length, | 637 void AllocateOneByteString(Register result, Register length, |
758 Register scratch1, Register scratch2, | 638 Register scratch1, Register scratch2, |
759 Register scratch3, Label* gc_required); | 639 Register scratch3, Label* gc_required); |
760 void AllocateTwoByteConsString(Register result, | 640 void AllocateTwoByteConsString(Register result, Register length, |
761 Register length, | 641 Register scratch1, Register scratch2, |
762 Register scratch1, | |
763 Register scratch2, | |
764 Label* gc_required); | 642 Label* gc_required); |
765 void AllocateOneByteConsString(Register result, Register length, | 643 void AllocateOneByteConsString(Register result, Register length, |
766 Register scratch1, Register scratch2, | 644 Register scratch1, Register scratch2, |
767 Label* gc_required); | 645 Label* gc_required); |
768 void AllocateTwoByteSlicedString(Register result, | 646 void AllocateTwoByteSlicedString(Register result, Register length, |
769 Register length, | 647 Register scratch1, Register scratch2, |
770 Register scratch1, | |
771 Register scratch2, | |
772 Label* gc_required); | 648 Label* gc_required); |
773 void AllocateOneByteSlicedString(Register result, Register length, | 649 void AllocateOneByteSlicedString(Register result, Register length, |
774 Register scratch1, Register scratch2, | 650 Register scratch1, Register scratch2, |
775 Label* gc_required); | 651 Label* gc_required); |
776 | 652 |
777 // Allocates a heap number or jumps to the gc_required label if the young | 653 // Allocates a heap number or jumps to the gc_required label if the young |
778 // space is full and a scavenge is needed. All registers are clobbered also | 654 // space is full and a scavenge is needed. All registers are clobbered also |
779 // when control continues at the gc_required label. | 655 // when control continues at the gc_required label. |
780 void AllocateHeapNumber(Register result, | 656 void AllocateHeapNumber(Register result, Register scratch1, Register scratch2, |
781 Register scratch1, | 657 Register heap_number_map, Label* gc_required, |
782 Register scratch2, | |
783 Register heap_number_map, | |
784 Label* gc_required, | |
785 TaggingMode tagging_mode = TAG_RESULT, | 658 TaggingMode tagging_mode = TAG_RESULT, |
786 MutableMode mode = IMMUTABLE); | 659 MutableMode mode = IMMUTABLE); |
787 void AllocateHeapNumberWithValue(Register result, | 660 void AllocateHeapNumberWithValue(Register result, DoubleRegister value, |
788 DwVfpRegister value, | 661 Register scratch1, Register scratch2, |
789 Register scratch1, | |
790 Register scratch2, | |
791 Register heap_number_map, | 662 Register heap_number_map, |
792 Label* gc_required); | 663 Label* gc_required); |
793 | 664 |
794 // Copies a fixed number of fields of heap objects from src to dst. | 665 // Copies a fixed number of fields of heap objects from src to dst. |
795 void CopyFields(Register dst, | 666 void CopyFields(Register dst, Register src, RegList temps, int field_count); |
796 Register src, | |
797 LowDwVfpRegister double_scratch, | |
798 int field_count); | |
799 | 667 |
800 // Copies a number of bytes from src to dst. All registers are clobbered. On | 668 // Copies a number of bytes from src to dst. All registers are clobbered. On |
801 // exit src and dst will point to the place just after where the last byte was | 669 // exit src and dst will point to the place just after where the last byte was |
802 // read or written and length will be zero. | 670 // read or written and length will be zero. |
803 void CopyBytes(Register src, | 671 void CopyBytes(Register src, Register dst, Register length, Register scratch); |
804 Register dst, | 672 |
805 Register length, | 673 // Initialize fields with filler values. |count| fields starting at |
806 Register scratch); | 674 // |start_offset| are overwritten with the value in |filler|. At the end the |
| 675 // loop, |start_offset| points at the next uninitialized field. |count| is |
| 676 // assumed to be non-zero. |
| 677 void InitializeNFieldsWithFiller(Register start_offset, Register count, |
| 678 Register filler); |
807 | 679 |
808 // Initialize fields with filler values. Fields starting at |start_offset| | 680 // Initialize fields with filler values. Fields starting at |start_offset| |
809 // not including end_offset are overwritten with the value in |filler|. At | 681 // not including end_offset are overwritten with the value in |filler|. At |
810 // the end the loop, |start_offset| takes the value of |end_offset|. | 682 // the end the loop, |start_offset| takes the value of |end_offset|. |
811 void InitializeFieldsWithFiller(Register start_offset, | 683 void InitializeFieldsWithFiller(Register start_offset, Register end_offset, |
812 Register end_offset, | |
813 Register filler); | 684 Register filler); |
814 | 685 |
815 // --------------------------------------------------------------------------- | 686 // --------------------------------------------------------------------------- |
816 // Support functions. | 687 // Support functions. |
817 | 688 |
818 // Try to get function prototype of a function and puts the value in | 689 // Try to get function prototype of a function and puts the value in |
819 // the result register. Checks that the function really is a | 690 // the result register. Checks that the function really is a |
820 // function and jumps to the miss label if the fast checks fail. The | 691 // function and jumps to the miss label if the fast checks fail. The |
821 // function register will be untouched; the other registers may be | 692 // function register will be untouched; the other registers may be |
822 // clobbered. | 693 // clobbered. |
823 void TryGetFunctionPrototype(Register function, | 694 void TryGetFunctionPrototype(Register function, Register result, |
824 Register result, | 695 Register scratch, Label* miss, |
825 Register scratch, | |
826 Label* miss, | |
827 bool miss_on_bound_function = false); | 696 bool miss_on_bound_function = false); |
828 | 697 |
829 // Compare object type for heap object. heap_object contains a non-Smi | 698 // Compare object type for heap object. heap_object contains a non-Smi |
830 // whose object type should be compared with the given type. This both | 699 // whose object type should be compared with the given type. This both |
831 // sets the flags and leaves the object type in the type_reg register. | 700 // sets the flags and leaves the object type in the type_reg register. |
832 // It leaves the map in the map register (unless the type_reg and map register | 701 // It leaves the map in the map register (unless the type_reg and map register |
833 // are the same register). It leaves the heap object in the heap_object | 702 // are the same register). It leaves the heap object in the heap_object |
834 // register unless the heap_object register is the same register as one of the | 703 // register unless the heap_object register is the same register as one of the |
835 // other registers. | 704 // other registers. |
836 // Type_reg can be no_reg. In that case ip is used. | 705 // Type_reg can be no_reg. In that case ip is used. |
837 void CompareObjectType(Register heap_object, | 706 void CompareObjectType(Register heap_object, Register map, Register type_reg, |
838 Register map, | |
839 Register type_reg, | |
840 InstanceType type); | 707 InstanceType type); |
841 | 708 |
842 // Compare object type for heap object. Branch to false_label if type | 709 // Compare object type for heap object. Branch to false_label if type |
843 // is lower than min_type or greater than max_type. | 710 // is lower than min_type or greater than max_type. |
844 // Load map into the register map. | 711 // Load map into the register map. |
845 void CheckObjectTypeRange(Register heap_object, | 712 void CheckObjectTypeRange(Register heap_object, Register map, |
846 Register map, | 713 InstanceType min_type, InstanceType max_type, |
847 InstanceType min_type, | |
848 InstanceType max_type, | |
849 Label* false_label); | 714 Label* false_label); |
850 | 715 |
851 // Compare instance type in a map. map contains a valid map object whose | 716 // Compare instance type in a map. map contains a valid map object whose |
852 // object type should be compared with the given type. This both | 717 // object type should be compared with the given type. This both |
853 // sets the flags and leaves the object type in the type_reg register. | 718 // sets the flags and leaves the object type in the type_reg register. |
854 void CompareInstanceType(Register map, | 719 void CompareInstanceType(Register map, Register type_reg, InstanceType type); |
855 Register type_reg, | |
856 InstanceType type); | |
857 | 720 |
858 | 721 |
859 // Check if a map for a JSObject indicates that the object has fast elements. | 722 // Check if a map for a JSObject indicates that the object has fast elements. |
860 // Jump to the specified label if it does not. | 723 // Jump to the specified label if it does not. |
861 void CheckFastElements(Register map, | 724 void CheckFastElements(Register map, Register scratch, Label* fail); |
862 Register scratch, | |
863 Label* fail); | |
864 | 725 |
865 // Check if a map for a JSObject indicates that the object can have both smi | 726 // Check if a map for a JSObject indicates that the object can have both smi |
866 // and HeapObject elements. Jump to the specified label if it does not. | 727 // and HeapObject elements. Jump to the specified label if it does not. |
867 void CheckFastObjectElements(Register map, | 728 void CheckFastObjectElements(Register map, Register scratch, Label* fail); |
868 Register scratch, | |
869 Label* fail); | |
870 | 729 |
871 // Check if a map for a JSObject indicates that the object has fast smi only | 730 // Check if a map for a JSObject indicates that the object has fast smi only |
872 // elements. Jump to the specified label if it does not. | 731 // elements. Jump to the specified label if it does not. |
873 void CheckFastSmiElements(Register map, | 732 void CheckFastSmiElements(Register map, Register scratch, Label* fail); |
874 Register scratch, | |
875 Label* fail); | |
876 | 733 |
877 // Check to see if maybe_number can be stored as a double in | 734 // Check to see if maybe_number can be stored as a double in |
878 // FastDoubleElements. If it can, store it at the index specified by key in | 735 // FastDoubleElements. If it can, store it at the index specified by key in |
879 // the FastDoubleElements array elements. Otherwise jump to fail. | 736 // the FastDoubleElements array elements. Otherwise jump to fail. |
880 void StoreNumberToDoubleElements(Register value_reg, | 737 void StoreNumberToDoubleElements(Register value_reg, Register key_reg, |
881 Register key_reg, | 738 Register elements_reg, Register scratch1, |
882 Register elements_reg, | 739 DoubleRegister double_scratch, Label* fail, |
883 Register scratch1, | |
884 LowDwVfpRegister double_scratch, | |
885 Label* fail, | |
886 int elements_offset = 0); | 740 int elements_offset = 0); |
887 | 741 |
888 // Compare an object's map with the specified map and its transitioned | 742 // Compare an object's map with the specified map and its transitioned |
889 // elements maps if mode is ALLOW_ELEMENT_TRANSITION_MAPS. Condition flags are | 743 // elements maps if mode is ALLOW_ELEMENT_TRANSITION_MAPS. Condition flags are |
890 // set with result of map compare. If multiple map compares are required, the | 744 // set with result of map compare. If multiple map compares are required, the |
891 // compare sequences branches to early_success. | 745 // compare sequences branches to early_success. |
892 void CompareMap(Register obj, | 746 void CompareMap(Register obj, Register scratch, Handle<Map> map, |
893 Register scratch, | |
894 Handle<Map> map, | |
895 Label* early_success); | 747 Label* early_success); |
896 | 748 |
897 // As above, but the map of the object is already loaded into the register | 749 // As above, but the map of the object is already loaded into the register |
898 // which is preserved by the code generated. | 750 // which is preserved by the code generated. |
899 void CompareMap(Register obj_map, | 751 void CompareMap(Register obj_map, Handle<Map> map, Label* early_success); |
900 Handle<Map> map, | |
901 Label* early_success); | |
902 | 752 |
903 // Check if the map of an object is equal to a specified map and branch to | 753 // Check if the map of an object is equal to a specified map and branch to |
904 // label if not. Skip the smi check if not required (object is known to be a | 754 // label if not. Skip the smi check if not required (object is known to be a |
905 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match | 755 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match |
906 // against maps that are ElementsKind transition maps of the specified map. | 756 // against maps that are ElementsKind transition maps of the specified map. |
907 void CheckMap(Register obj, | 757 void CheckMap(Register obj, Register scratch, Handle<Map> map, Label* fail, |
908 Register scratch, | |
909 Handle<Map> map, | |
910 Label* fail, | |
911 SmiCheckType smi_check_type); | 758 SmiCheckType smi_check_type); |
912 | 759 |
913 | 760 |
914 void CheckMap(Register obj, | 761 void CheckMap(Register obj, Register scratch, Heap::RootListIndex index, |
915 Register scratch, | 762 Label* fail, SmiCheckType smi_check_type); |
916 Heap::RootListIndex index, | |
917 Label* fail, | |
918 SmiCheckType smi_check_type); | |
919 | 763 |
920 | 764 |
921 // Check if the map of an object is equal to a specified map and branch to a | 765 // Check if the map of an object is equal to a specified map and branch to a |
922 // specified target if equal. Skip the smi check if not required (object is | 766 // specified target if equal. Skip the smi check if not required (object is |
923 // known to be a heap object) | 767 // known to be a heap object) |
924 void DispatchMap(Register obj, | 768 void DispatchMap(Register obj, Register scratch, Handle<Map> map, |
925 Register scratch, | 769 Handle<Code> success, SmiCheckType smi_check_type); |
926 Handle<Map> map, | |
927 Handle<Code> success, | |
928 SmiCheckType smi_check_type); | |
929 | 770 |
930 | 771 |
931 // Compare the object in a register to a value from the root list. | 772 // Compare the object in a register to a value from the root list. |
932 // Uses the ip register as scratch. | 773 // Uses the ip register as scratch. |
933 void CompareRoot(Register obj, Heap::RootListIndex index); | 774 void CompareRoot(Register obj, Heap::RootListIndex index); |
934 | 775 |
935 | 776 |
936 // Load and check the instance type of an object for being a string. | 777 // Load and check the instance type of an object for being a string. |
937 // Loads the type into the second argument register. | 778 // Loads the type into the second argument register. |
938 // Returns a condition that will be enabled if the object was a string | 779 // Returns a condition that will be enabled if the object was a string. |
939 // and the passed-in condition passed. If the passed-in condition failed | 780 Condition IsObjectStringType(Register obj, Register type) { |
940 // then flags remain unchanged. | 781 LoadP(type, FieldMemOperand(obj, HeapObject::kMapOffset)); |
941 Condition IsObjectStringType(Register obj, | 782 lbz(type, FieldMemOperand(type, Map::kInstanceTypeOffset)); |
942 Register type, | 783 andi(r0, type, Operand(kIsNotStringMask)); |
943 Condition cond = al) { | |
944 ldr(type, FieldMemOperand(obj, HeapObject::kMapOffset), cond); | |
945 ldrb(type, FieldMemOperand(type, Map::kInstanceTypeOffset), cond); | |
946 tst(type, Operand(kIsNotStringMask), cond); | |
947 DCHECK_EQ(0, kStringTag); | 784 DCHECK_EQ(0, kStringTag); |
948 return eq; | 785 return eq; |
949 } | 786 } |
950 | 787 |
951 | 788 |
952 // Picks out an array index from the hash field. | 789 // Picks out an array index from the hash field. |
953 // Register use: | 790 // Register use: |
954 // hash - holds the index's hash. Clobbered. | 791 // hash - holds the index's hash. Clobbered. |
955 // index - holds the overwritten index on exit. | 792 // index - holds the overwritten index on exit. |
956 void IndexFromHash(Register hash, Register index); | 793 void IndexFromHash(Register hash, Register index); |
957 | 794 |
958 // Get the number of least significant bits from a register | 795 // Get the number of least significant bits from a register |
959 void GetLeastBitsFromSmi(Register dst, Register src, int num_least_bits); | 796 void GetLeastBitsFromSmi(Register dst, Register src, int num_least_bits); |
960 void GetLeastBitsFromInt32(Register dst, Register src, int mun_least_bits); | 797 void GetLeastBitsFromInt32(Register dst, Register src, int mun_least_bits); |
961 | 798 |
962 // Load the value of a smi object into a double register. | 799 // Load the value of a smi object into a double register. |
963 // The register value must be between d0 and d15. | 800 void SmiToDouble(DoubleRegister value, Register smi); |
964 void SmiToDouble(LowDwVfpRegister value, Register smi); | |
965 | 801 |
966 // Check if a double can be exactly represented as a signed 32-bit integer. | 802 // Check if a double can be exactly represented as a signed 32-bit integer. |
967 // Z flag set to one if true. | 803 // CR_EQ in cr7 is set if true. |
968 void TestDoubleIsInt32(DwVfpRegister double_input, | 804 void TestDoubleIsInt32(DoubleRegister double_input, Register scratch1, |
969 LowDwVfpRegister double_scratch); | 805 Register scratch2, DoubleRegister double_scratch); |
970 | 806 |
971 // Try to convert a double to a signed 32-bit integer. | 807 // Try to convert a double to a signed 32-bit integer. |
972 // Z flag set to one and result assigned if the conversion is exact. | 808 // CR_EQ in cr7 is set and result assigned if the conversion is exact. |
973 void TryDoubleToInt32Exact(Register result, | 809 void TryDoubleToInt32Exact(Register result, DoubleRegister double_input, |
974 DwVfpRegister double_input, | 810 Register scratch, DoubleRegister double_scratch); |
975 LowDwVfpRegister double_scratch); | |
976 | 811 |
977 // Floor a double and writes the value to the result register. | 812 // Floor a double and writes the value to the result register. |
978 // Go to exact if the conversion is exact (to be able to test -0), | 813 // Go to exact if the conversion is exact (to be able to test -0), |
979 // fall through calling code if an overflow occurred, else go to done. | 814 // fall through calling code if an overflow occurred, else go to done. |
980 // In return, input_high is loaded with high bits of input. | 815 // In return, input_high is loaded with high bits of input. |
981 void TryInt32Floor(Register result, | 816 void TryInt32Floor(Register result, DoubleRegister double_input, |
982 DwVfpRegister double_input, | 817 Register input_high, Register scratch, |
983 Register input_high, | 818 DoubleRegister double_scratch, Label* done, Label* exact); |
984 LowDwVfpRegister double_scratch, | |
985 Label* done, | |
986 Label* exact); | |
987 | 819 |
988 // Performs a truncating conversion of a floating point number as used by | 820 // Performs a truncating conversion of a floating point number as used by |
989 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. Goes to 'done' if it | 821 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. Goes to 'done' if it |
990 // succeeds, otherwise falls through if result is saturated. On return | 822 // succeeds, otherwise falls through if result is saturated. On return |
991 // 'result' either holds answer, or is clobbered on fall through. | 823 // 'result' either holds answer, or is clobbered on fall through. |
992 // | 824 // |
993 // Only public for the test code in test-code-stubs-arm.cc. | 825 // Only public for the test code in test-code-stubs-arm.cc. |
994 void TryInlineTruncateDoubleToI(Register result, | 826 void TryInlineTruncateDoubleToI(Register result, DoubleRegister input, |
995 DwVfpRegister input, | |
996 Label* done); | 827 Label* done); |
997 | 828 |
998 // Performs a truncating conversion of a floating point number as used by | 829 // Performs a truncating conversion of a floating point number as used by |
999 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. | 830 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. |
1000 // Exits with 'result' holding the answer. | 831 // Exits with 'result' holding the answer. |
1001 void TruncateDoubleToI(Register result, DwVfpRegister double_input); | 832 void TruncateDoubleToI(Register result, DoubleRegister double_input); |
1002 | 833 |
1003 // Performs a truncating conversion of a heap number as used by | 834 // Performs a truncating conversion of a heap number as used by |
1004 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. 'result' and 'input' | 835 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. 'result' and 'input' |
1005 // must be different registers. Exits with 'result' holding the answer. | 836 // must be different registers. Exits with 'result' holding the answer. |
1006 void TruncateHeapNumberToI(Register result, Register object); | 837 void TruncateHeapNumberToI(Register result, Register object); |
1007 | 838 |
1008 // Converts the smi or heap number in object to an int32 using the rules | 839 // Converts the smi or heap number in object to an int32 using the rules |
1009 // for ToInt32 as described in ECMAScript 9.5.: the value is truncated | 840 // for ToInt32 as described in ECMAScript 9.5.: the value is truncated |
1010 // and brought into the range -2^31 .. +2^31 - 1. 'result' and 'input' must be | 841 // and brought into the range -2^31 .. +2^31 - 1. 'result' and 'input' must be |
1011 // different registers. | 842 // different registers. |
1012 void TruncateNumberToI(Register object, | 843 void TruncateNumberToI(Register object, Register result, |
1013 Register result, | 844 Register heap_number_map, Register scratch1, |
1014 Register heap_number_map, | |
1015 Register scratch1, | |
1016 Label* not_int32); | 845 Label* not_int32); |
1017 | 846 |
1018 // Check whether d16-d31 are available on the CPU. The result is given by the | 847 // Overflow handling functions. |
1019 // Z condition flag: Z==0 if d16-d31 available, Z==1 otherwise. | 848 // Usage: call the appropriate arithmetic function and then call one of the |
1020 void CheckFor32DRegs(Register scratch); | 849 // flow control functions with the corresponding label. |
1021 | 850 |
1022 // Does a runtime check for 16/32 FP registers. Either way, pushes 32 double | 851 // Compute dst = left + right, setting condition codes. dst may be same as |
1023 // values to location, saving [d0..(d15|d31)]. | 852 // either left or right (or a unique register). left and right must not be |
1024 void SaveFPRegs(Register location, Register scratch); | 853 // the same register. |
| 854 void AddAndCheckForOverflow(Register dst, Register left, Register right, |
| 855 Register overflow_dst, Register scratch = r0); |
| 856 void AddAndCheckForOverflow(Register dst, Register left, intptr_t right, |
| 857 Register overflow_dst, Register scratch = r0); |
1025 | 858 |
1026 // Does a runtime check for 16/32 FP registers. Either way, pops 32 double | 859 // Compute dst = left - right, setting condition codes. dst may be same as |
1027 // values to location, restoring [d0..(d15|d31)]. | 860 // either left or right (or a unique register). left and right must not be |
1028 void RestoreFPRegs(Register location, Register scratch); | 861 // the same register. |
| 862 void SubAndCheckForOverflow(Register dst, Register left, Register right, |
| 863 Register overflow_dst, Register scratch = r0); |
| 864 |
| 865 void BranchOnOverflow(Label* label) { blt(label, cr0); } |
| 866 |
| 867 void BranchOnNoOverflow(Label* label) { bge(label, cr0); } |
| 868 |
| 869 void RetOnOverflow(void) { |
| 870 Label label; |
| 871 |
| 872 blt(&label, cr0); |
| 873 Ret(); |
| 874 bind(&label); |
| 875 } |
| 876 |
| 877 void RetOnNoOverflow(void) { |
| 878 Label label; |
| 879 |
| 880 bge(&label, cr0); |
| 881 Ret(); |
| 882 bind(&label); |
| 883 } |
| 884 |
| 885 // Pushes <count> double values to <location>, starting from d<first>. |
| 886 void SaveFPRegs(Register location, int first, int count); |
| 887 |
| 888 // Pops <count> double values from <location>, starting from d<first>. |
| 889 void RestoreFPRegs(Register location, int first, int count); |
1029 | 890 |
1030 // --------------------------------------------------------------------------- | 891 // --------------------------------------------------------------------------- |
1031 // Runtime calls | 892 // Runtime calls |
1032 | 893 |
1033 // Call a code stub. | 894 // Call a code stub. |
1034 void CallStub(CodeStub* stub, | 895 void CallStub(CodeStub* stub, TypeFeedbackId ast_id = TypeFeedbackId::None(), |
1035 TypeFeedbackId ast_id = TypeFeedbackId::None(), | |
1036 Condition cond = al); | 896 Condition cond = al); |
1037 | 897 |
1038 // Call a code stub. | 898 // Call a code stub. |
1039 void TailCallStub(CodeStub* stub, Condition cond = al); | 899 void TailCallStub(CodeStub* stub, Condition cond = al); |
1040 | 900 |
1041 // Call a runtime routine. | 901 // Call a runtime routine. |
1042 void CallRuntime(const Runtime::Function* f, | 902 void CallRuntime(const Runtime::Function* f, int num_arguments, |
1043 int num_arguments, | |
1044 SaveFPRegsMode save_doubles = kDontSaveFPRegs); | 903 SaveFPRegsMode save_doubles = kDontSaveFPRegs); |
1045 void CallRuntimeSaveDoubles(Runtime::FunctionId id) { | 904 void CallRuntimeSaveDoubles(Runtime::FunctionId id) { |
1046 const Runtime::Function* function = Runtime::FunctionForId(id); | 905 const Runtime::Function* function = Runtime::FunctionForId(id); |
1047 CallRuntime(function, function->nargs, kSaveFPRegs); | 906 CallRuntime(function, function->nargs, kSaveFPRegs); |
1048 } | 907 } |
1049 | 908 |
1050 // Convenience function: Same as above, but takes the fid instead. | 909 // Convenience function: Same as above, but takes the fid instead. |
1051 void CallRuntime(Runtime::FunctionId id, | 910 void CallRuntime(Runtime::FunctionId id, int num_arguments, |
1052 int num_arguments, | |
1053 SaveFPRegsMode save_doubles = kDontSaveFPRegs) { | 911 SaveFPRegsMode save_doubles = kDontSaveFPRegs) { |
1054 CallRuntime(Runtime::FunctionForId(id), num_arguments, save_doubles); | 912 CallRuntime(Runtime::FunctionForId(id), num_arguments, save_doubles); |
1055 } | 913 } |
1056 | 914 |
1057 // Convenience function: call an external reference. | 915 // Convenience function: call an external reference. |
1058 void CallExternalReference(const ExternalReference& ext, | 916 void CallExternalReference(const ExternalReference& ext, int num_arguments); |
1059 int num_arguments); | |
1060 | 917 |
1061 // Tail call of a runtime routine (jump). | 918 // Tail call of a runtime routine (jump). |
1062 // Like JumpToExternalReference, but also takes care of passing the number | 919 // Like JumpToExternalReference, but also takes care of passing the number |
1063 // of parameters. | 920 // of parameters. |
1064 void TailCallExternalReference(const ExternalReference& ext, | 921 void TailCallExternalReference(const ExternalReference& ext, |
1065 int num_arguments, | 922 int num_arguments, int result_size); |
1066 int result_size); | |
1067 | 923 |
1068 // Convenience function: tail call a runtime routine (jump). | 924 // Convenience function: tail call a runtime routine (jump). |
1069 void TailCallRuntime(Runtime::FunctionId fid, | 925 void TailCallRuntime(Runtime::FunctionId fid, int num_arguments, |
1070 int num_arguments, | |
1071 int result_size); | 926 int result_size); |
1072 | 927 |
1073 int CalculateStackPassedWords(int num_reg_arguments, | 928 int CalculateStackPassedWords(int num_reg_arguments, |
1074 int num_double_arguments); | 929 int num_double_arguments); |
1075 | 930 |
1076 // Before calling a C-function from generated code, align arguments on stack. | 931 // Before calling a C-function from generated code, align arguments on stack. |
1077 // After aligning the frame, non-register arguments must be stored in | 932 // After aligning the frame, non-register arguments must be stored in |
1078 // sp[0], sp[4], etc., not pushed. The argument count assumes all arguments | 933 // sp[0], sp[4], etc., not pushed. The argument count assumes all arguments |
1079 // are word sized. If double arguments are used, this function assumes that | 934 // are word sized. If double arguments are used, this function assumes that |
1080 // all double arguments are stored before core registers; otherwise the | 935 // all double arguments are stored before core registers; otherwise the |
1081 // correct alignment of the double values is not guaranteed. | 936 // correct alignment of the double values is not guaranteed. |
1082 // Some compilers/platforms require the stack to be aligned when calling | 937 // Some compilers/platforms require the stack to be aligned when calling |
1083 // C++ code. | 938 // C++ code. |
1084 // Needs a scratch register to do some arithmetic. This register will be | 939 // Needs a scratch register to do some arithmetic. This register will be |
1085 // trashed. | 940 // trashed. |
1086 void PrepareCallCFunction(int num_reg_arguments, | 941 void PrepareCallCFunction(int num_reg_arguments, int num_double_registers, |
1087 int num_double_registers, | |
1088 Register scratch); | 942 Register scratch); |
1089 void PrepareCallCFunction(int num_reg_arguments, | 943 void PrepareCallCFunction(int num_reg_arguments, Register scratch); |
1090 Register scratch); | |
1091 | 944 |
1092 // There are two ways of passing double arguments on ARM, depending on | 945 // There are two ways of passing double arguments on ARM, depending on |
1093 // whether soft or hard floating point ABI is used. These functions | 946 // whether soft or hard floating point ABI is used. These functions |
1094 // abstract parameter passing for the three different ways we call | 947 // abstract parameter passing for the three different ways we call |
1095 // C functions from generated code. | 948 // C functions from generated code. |
1096 void MovToFloatParameter(DwVfpRegister src); | 949 void MovToFloatParameter(DoubleRegister src); |
1097 void MovToFloatParameters(DwVfpRegister src1, DwVfpRegister src2); | 950 void MovToFloatParameters(DoubleRegister src1, DoubleRegister src2); |
1098 void MovToFloatResult(DwVfpRegister src); | 951 void MovToFloatResult(DoubleRegister src); |
1099 | 952 |
1100 // Calls a C function and cleans up the space for arguments allocated | 953 // Calls a C function and cleans up the space for arguments allocated |
1101 // by PrepareCallCFunction. The called function is not allowed to trigger a | 954 // by PrepareCallCFunction. The called function is not allowed to trigger a |
1102 // garbage collection, since that might move the code and invalidate the | 955 // garbage collection, since that might move the code and invalidate the |
1103 // return address (unless this is somehow accounted for by the called | 956 // return address (unless this is somehow accounted for by the called |
1104 // function). | 957 // function). |
1105 void CallCFunction(ExternalReference function, int num_arguments); | 958 void CallCFunction(ExternalReference function, int num_arguments); |
1106 void CallCFunction(Register function, int num_arguments); | 959 void CallCFunction(Register function, int num_arguments); |
1107 void CallCFunction(ExternalReference function, | 960 void CallCFunction(ExternalReference function, int num_reg_arguments, |
1108 int num_reg_arguments, | |
1109 int num_double_arguments); | 961 int num_double_arguments); |
1110 void CallCFunction(Register function, | 962 void CallCFunction(Register function, int num_reg_arguments, |
1111 int num_reg_arguments, | |
1112 int num_double_arguments); | 963 int num_double_arguments); |
1113 | 964 |
1114 void MovFromFloatParameter(DwVfpRegister dst); | 965 void MovFromFloatParameter(DoubleRegister dst); |
1115 void MovFromFloatResult(DwVfpRegister dst); | 966 void MovFromFloatResult(DoubleRegister dst); |
1116 | 967 |
1117 // Calls an API function. Allocates HandleScope, extracts returned value | 968 // Calls an API function. Allocates HandleScope, extracts returned value |
1118 // from handle and propagates exceptions. Restores context. stack_space | 969 // from handle and propagates exceptions. Restores context. stack_space |
1119 // - space to be unwound on exit (includes the call JS arguments space and | 970 // - space to be unwound on exit (includes the call JS arguments space and |
1120 // the additional space allocated for the fast call). | 971 // the additional space allocated for the fast call). |
1121 void CallApiFunctionAndReturn(Register function_address, | 972 void CallApiFunctionAndReturn(Register function_address, |
1122 ExternalReference thunk_ref, | 973 ExternalReference thunk_ref, int stack_space, |
1123 int stack_space, | |
1124 MemOperand return_value_operand, | 974 MemOperand return_value_operand, |
1125 MemOperand* context_restore_operand); | 975 MemOperand* context_restore_operand); |
1126 | 976 |
1127 // Jump to a runtime routine. | 977 // Jump to a runtime routine. |
1128 void JumpToExternalReference(const ExternalReference& builtin); | 978 void JumpToExternalReference(const ExternalReference& builtin); |
1129 | 979 |
1130 // Invoke specified builtin JavaScript function. Adds an entry to | 980 // Invoke specified builtin JavaScript function. Adds an entry to |
1131 // the unresolved list if the name does not resolve. | 981 // the unresolved list if the name does not resolve. |
1132 void InvokeBuiltin(Builtins::JavaScript id, | 982 void InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag, |
1133 InvokeFlag flag, | |
1134 const CallWrapper& call_wrapper = NullCallWrapper()); | 983 const CallWrapper& call_wrapper = NullCallWrapper()); |
1135 | 984 |
1136 // Store the code object for the given builtin in the target register and | 985 // Store the code object for the given builtin in the target register and |
1137 // setup the function in r1. | 986 // setup the function in r1. |
1138 void GetBuiltinEntry(Register target, Builtins::JavaScript id); | 987 void GetBuiltinEntry(Register target, Builtins::JavaScript id); |
1139 | 988 |
1140 // Store the function for the given builtin in the target register. | 989 // Store the function for the given builtin in the target register. |
1141 void GetBuiltinFunction(Register target, Builtins::JavaScript id); | 990 void GetBuiltinFunction(Register target, Builtins::JavaScript id); |
1142 | 991 |
1143 Handle<Object> CodeObject() { | 992 Handle<Object> CodeObject() { |
1144 DCHECK(!code_object_.is_null()); | 993 DCHECK(!code_object_.is_null()); |
1145 return code_object_; | 994 return code_object_; |
1146 } | 995 } |
1147 | 996 |
1148 | 997 |
1149 // Emit code for a truncating division by a constant. The dividend register is | 998 // Emit code for a truncating division by a constant. The dividend register is |
1150 // unchanged and ip gets clobbered. Dividend and result must be different. | 999 // unchanged and ip gets clobbered. Dividend and result must be different. |
1151 void TruncatingDiv(Register result, Register dividend, int32_t divisor); | 1000 void TruncatingDiv(Register result, Register dividend, int32_t divisor); |
1152 | 1001 |
1153 // --------------------------------------------------------------------------- | 1002 // --------------------------------------------------------------------------- |
1154 // StatsCounter support | 1003 // StatsCounter support |
1155 | 1004 |
1156 void SetCounter(StatsCounter* counter, int value, | 1005 void SetCounter(StatsCounter* counter, int value, Register scratch1, |
1157 Register scratch1, Register scratch2); | 1006 Register scratch2); |
1158 void IncrementCounter(StatsCounter* counter, int value, | 1007 void IncrementCounter(StatsCounter* counter, int value, Register scratch1, |
1159 Register scratch1, Register scratch2); | 1008 Register scratch2); |
1160 void DecrementCounter(StatsCounter* counter, int value, | 1009 void DecrementCounter(StatsCounter* counter, int value, Register scratch1, |
1161 Register scratch1, Register scratch2); | 1010 Register scratch2); |
1162 | 1011 |
1163 | 1012 |
1164 // --------------------------------------------------------------------------- | 1013 // --------------------------------------------------------------------------- |
1165 // Debugging | 1014 // Debugging |
1166 | 1015 |
1167 // Calls Abort(msg) if the condition cond is not satisfied. | 1016 // Calls Abort(msg) if the condition cond is not satisfied. |
1168 // Use --debug_code to enable. | 1017 // Use --debug_code to enable. |
1169 void Assert(Condition cond, BailoutReason reason); | 1018 void Assert(Condition cond, BailoutReason reason, CRegister cr = cr7); |
1170 void AssertFastElements(Register elements); | 1019 void AssertFastElements(Register elements); |
1171 | 1020 |
1172 // Like Assert(), but always enabled. | 1021 // Like Assert(), but always enabled. |
1173 void Check(Condition cond, BailoutReason reason); | 1022 void Check(Condition cond, BailoutReason reason, CRegister cr = cr7); |
1174 | 1023 |
1175 // Print a message to stdout and abort execution. | 1024 // Print a message to stdout and abort execution. |
1176 void Abort(BailoutReason msg); | 1025 void Abort(BailoutReason reason); |
1177 | 1026 |
1178 // Verify restrictions about code generated in stubs. | 1027 // Verify restrictions about code generated in stubs. |
1179 void set_generating_stub(bool value) { generating_stub_ = value; } | 1028 void set_generating_stub(bool value) { generating_stub_ = value; } |
1180 bool generating_stub() { return generating_stub_; } | 1029 bool generating_stub() { return generating_stub_; } |
1181 void set_has_frame(bool value) { has_frame_ = value; } | 1030 void set_has_frame(bool value) { has_frame_ = value; } |
1182 bool has_frame() { return has_frame_; } | 1031 bool has_frame() { return has_frame_; } |
1183 inline bool AllowThisStubCall(CodeStub* stub); | 1032 inline bool AllowThisStubCall(CodeStub* stub); |
1184 | 1033 |
1185 // EABI variant for double arguments in use. | |
1186 bool use_eabi_hardfloat() { | |
1187 #ifdef __arm__ | |
1188 return base::OS::ArmUsingHardFloat(); | |
1189 #elif USE_EABI_HARDFLOAT | |
1190 return true; | |
1191 #else | |
1192 return false; | |
1193 #endif | |
1194 } | |
1195 | |
1196 // --------------------------------------------------------------------------- | 1034 // --------------------------------------------------------------------------- |
1197 // Number utilities | 1035 // Number utilities |
1198 | 1036 |
1199 // Check whether the value of reg is a power of two and not zero. If not | 1037 // Check whether the value of reg is a power of two and not zero. If not |
1200 // control continues at the label not_power_of_two. If reg is a power of two | 1038 // control continues at the label not_power_of_two. If reg is a power of two |
1201 // the register scratch contains the value of (reg - 1) when control falls | 1039 // the register scratch contains the value of (reg - 1) when control falls |
1202 // through. | 1040 // through. |
1203 void JumpIfNotPowerOfTwoOrZero(Register reg, | 1041 void JumpIfNotPowerOfTwoOrZero(Register reg, Register scratch, |
1204 Register scratch, | |
1205 Label* not_power_of_two_or_zero); | 1042 Label* not_power_of_two_or_zero); |
1206 // Check whether the value of reg is a power of two and not zero. | 1043 // Check whether the value of reg is a power of two and not zero. |
1207 // Control falls through if it is, with scratch containing the mask | 1044 // Control falls through if it is, with scratch containing the mask |
1208 // value (reg - 1). | 1045 // value (reg - 1). |
1209 // Otherwise control jumps to the 'zero_and_neg' label if the value of reg is | 1046 // Otherwise control jumps to the 'zero_and_neg' label if the value of reg is |
1210 // zero or negative, or jumps to the 'not_power_of_two' label if the value is | 1047 // zero or negative, or jumps to the 'not_power_of_two' label if the value is |
1211 // strictly positive but not a power of two. | 1048 // strictly positive but not a power of two. |
1212 void JumpIfNotPowerOfTwoOrZeroAndNeg(Register reg, | 1049 void JumpIfNotPowerOfTwoOrZeroAndNeg(Register reg, Register scratch, |
1213 Register scratch, | |
1214 Label* zero_and_neg, | 1050 Label* zero_and_neg, |
1215 Label* not_power_of_two); | 1051 Label* not_power_of_two); |
1216 | 1052 |
1217 // --------------------------------------------------------------------------- | 1053 // --------------------------------------------------------------------------- |
1218 // Smi utilities | 1054 // Bit testing/extraction |
| 1055 // |
| 1056 // Bit numbering is such that the least significant bit is bit 0 |
| 1057 // (for consistency between 32/64-bit). |
1219 | 1058 |
1220 void SmiTag(Register reg, SBit s = LeaveCC) { | 1059 // Extract consecutive bits (defined by rangeStart - rangeEnd) from src |
1221 add(reg, reg, Operand(reg), s); | 1060 // and place them into the least significant bits of dst. |
1222 } | 1061 inline void ExtractBitRange(Register dst, Register src, int rangeStart, |
1223 void SmiTag(Register dst, Register src, SBit s = LeaveCC) { | 1062 int rangeEnd, RCBit rc = LeaveRC) { |
1224 add(dst, src, Operand(src), s); | 1063 DCHECK(rangeStart >= rangeEnd && rangeStart < kBitsPerPointer); |
| 1064 int rotate = (rangeEnd == 0) ? 0 : kBitsPerPointer - rangeEnd; |
| 1065 int width = rangeStart - rangeEnd + 1; |
| 1066 #if V8_TARGET_ARCH_PPC64 |
| 1067 rldicl(dst, src, rotate, kBitsPerPointer - width, rc); |
| 1068 #else |
| 1069 rlwinm(dst, src, rotate, kBitsPerPointer - width, kBitsPerPointer - 1, rc); |
| 1070 #endif |
1225 } | 1071 } |
1226 | 1072 |
1227 // Try to convert int32 to smi. If the value is to large, preserve | 1073 inline void ExtractBit(Register dst, Register src, uint32_t bitNumber, |
1228 // the original value and jump to not_a_smi. Destroys scratch and | 1074 RCBit rc = LeaveRC) { |
1229 // sets flags. | 1075 ExtractBitRange(dst, src, bitNumber, bitNumber, rc); |
1230 void TrySmiTag(Register reg, Label* not_a_smi) { | |
1231 TrySmiTag(reg, reg, not_a_smi); | |
1232 } | 1076 } |
1233 void TrySmiTag(Register reg, Register src, Label* not_a_smi) { | 1077 |
1234 SmiTag(ip, src, SetCC); | 1078 // Extract consecutive bits (defined by mask) from src and place them |
1235 b(vs, not_a_smi); | 1079 // into the least significant bits of dst. |
1236 mov(reg, ip); | 1080 inline void ExtractBitMask(Register dst, Register src, uintptr_t mask, |
| 1081 RCBit rc = LeaveRC) { |
| 1082 int start = kBitsPerPointer - 1; |
| 1083 int end; |
| 1084 uintptr_t bit = (1L << start); |
| 1085 |
| 1086 while (bit && (mask & bit) == 0) { |
| 1087 start--; |
| 1088 bit >>= 1; |
| 1089 } |
| 1090 end = start; |
| 1091 bit >>= 1; |
| 1092 |
| 1093 while (bit && (mask & bit)) { |
| 1094 end--; |
| 1095 bit >>= 1; |
| 1096 } |
| 1097 |
| 1098 // 1-bits in mask must be contiguous |
| 1099 DCHECK(bit == 0 || (mask & ((bit << 1) - 1)) == 0); |
| 1100 |
| 1101 ExtractBitRange(dst, src, start, end, rc); |
| 1102 } |
| 1103 |
| 1104 // Test single bit in value. |
| 1105 inline void TestBit(Register value, int bitNumber, Register scratch = r0) { |
| 1106 ExtractBitRange(scratch, value, bitNumber, bitNumber, SetRC); |
| 1107 } |
| 1108 |
| 1109 // Test consecutive bit range in value. Range is defined by |
| 1110 // rangeStart - rangeEnd. |
| 1111 inline void TestBitRange(Register value, int rangeStart, int rangeEnd, |
| 1112 Register scratch = r0) { |
| 1113 ExtractBitRange(scratch, value, rangeStart, rangeEnd, SetRC); |
| 1114 } |
| 1115 |
| 1116 // Test consecutive bit range in value. Range is defined by mask. |
| 1117 inline void TestBitMask(Register value, uintptr_t mask, |
| 1118 Register scratch = r0) { |
| 1119 ExtractBitMask(scratch, value, mask, SetRC); |
1237 } | 1120 } |
1238 | 1121 |
1239 | 1122 |
1240 void SmiUntag(Register reg, SBit s = LeaveCC) { | 1123 // --------------------------------------------------------------------------- |
1241 mov(reg, Operand::SmiUntag(reg), s); | 1124 // Smi utilities |
| 1125 |
| 1126 // Shift left by 1 |
| 1127 void SmiTag(Register reg, RCBit rc = LeaveRC) { SmiTag(reg, reg, rc); } |
| 1128 void SmiTag(Register dst, Register src, RCBit rc = LeaveRC) { |
| 1129 ShiftLeftImm(dst, src, Operand(kSmiShift), rc); |
1242 } | 1130 } |
1243 void SmiUntag(Register dst, Register src, SBit s = LeaveCC) { | 1131 |
1244 mov(dst, Operand::SmiUntag(src), s); | 1132 #if !V8_TARGET_ARCH_PPC64 |
| 1133 // Test for overflow < 0: use BranchOnOverflow() or BranchOnNoOverflow(). |
| 1134 void SmiTagCheckOverflow(Register reg, Register overflow); |
| 1135 void SmiTagCheckOverflow(Register dst, Register src, Register overflow); |
| 1136 |
| 1137 inline void JumpIfNotSmiCandidate(Register value, Register scratch, |
| 1138 Label* not_smi_label) { |
| 1139 // High bits must be identical to fit into an Smi |
| 1140 addis(scratch, value, Operand(0x40000000u >> 16)); |
| 1141 cmpi(scratch, Operand::Zero()); |
| 1142 blt(not_smi_label); |
| 1143 } |
| 1144 #endif |
| 1145 inline void TestUnsignedSmiCandidate(Register value, Register scratch) { |
| 1146 // The test is different for unsigned int values. Since we need |
| 1147 // the value to be in the range of a positive smi, we can't |
| 1148 // handle any of the high bits being set in the value. |
| 1149 TestBitRange(value, kBitsPerPointer - 1, kBitsPerPointer - 1 - kSmiShift, |
| 1150 scratch); |
| 1151 } |
| 1152 inline void JumpIfNotUnsignedSmiCandidate(Register value, Register scratch, |
| 1153 Label* not_smi_label) { |
| 1154 TestUnsignedSmiCandidate(value, scratch); |
| 1155 bne(not_smi_label, cr0); |
| 1156 } |
| 1157 |
| 1158 void SmiUntag(Register reg, RCBit rc = LeaveRC) { SmiUntag(reg, reg, rc); } |
| 1159 |
| 1160 void SmiUntag(Register dst, Register src, RCBit rc = LeaveRC) { |
| 1161 ShiftRightArithImm(dst, src, kSmiShift, rc); |
| 1162 } |
| 1163 |
| 1164 void SmiToPtrArrayOffset(Register dst, Register src) { |
| 1165 #if V8_TARGET_ARCH_PPC64 |
| 1166 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > kPointerSizeLog2); |
| 1167 ShiftRightArithImm(dst, src, kSmiShift - kPointerSizeLog2); |
| 1168 #else |
| 1169 STATIC_ASSERT(kSmiTag == 0 && kSmiShift < kPointerSizeLog2); |
| 1170 ShiftLeftImm(dst, src, Operand(kPointerSizeLog2 - kSmiShift)); |
| 1171 #endif |
| 1172 } |
| 1173 |
| 1174 void SmiToByteArrayOffset(Register dst, Register src) { SmiUntag(dst, src); } |
| 1175 |
| 1176 void SmiToShortArrayOffset(Register dst, Register src) { |
| 1177 #if V8_TARGET_ARCH_PPC64 |
| 1178 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > 1); |
| 1179 ShiftRightArithImm(dst, src, kSmiShift - 1); |
| 1180 #else |
| 1181 STATIC_ASSERT(kSmiTag == 0 && kSmiShift == 1); |
| 1182 if (!dst.is(src)) { |
| 1183 mr(dst, src); |
| 1184 } |
| 1185 #endif |
| 1186 } |
| 1187 |
| 1188 void SmiToIntArrayOffset(Register dst, Register src) { |
| 1189 #if V8_TARGET_ARCH_PPC64 |
| 1190 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > 2); |
| 1191 ShiftRightArithImm(dst, src, kSmiShift - 2); |
| 1192 #else |
| 1193 STATIC_ASSERT(kSmiTag == 0 && kSmiShift < 2); |
| 1194 ShiftLeftImm(dst, src, Operand(2 - kSmiShift)); |
| 1195 #endif |
| 1196 } |
| 1197 |
| 1198 #define SmiToFloatArrayOffset SmiToIntArrayOffset |
| 1199 |
| 1200 void SmiToDoubleArrayOffset(Register dst, Register src) { |
| 1201 #if V8_TARGET_ARCH_PPC64 |
| 1202 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > kDoubleSizeLog2); |
| 1203 ShiftRightArithImm(dst, src, kSmiShift - kDoubleSizeLog2); |
| 1204 #else |
| 1205 STATIC_ASSERT(kSmiTag == 0 && kSmiShift < kDoubleSizeLog2); |
| 1206 ShiftLeftImm(dst, src, Operand(kDoubleSizeLog2 - kSmiShift)); |
| 1207 #endif |
| 1208 } |
| 1209 |
| 1210 void SmiToArrayOffset(Register dst, Register src, int elementSizeLog2) { |
| 1211 if (kSmiShift < elementSizeLog2) { |
| 1212 ShiftLeftImm(dst, src, Operand(elementSizeLog2 - kSmiShift)); |
| 1213 } else if (kSmiShift > elementSizeLog2) { |
| 1214 ShiftRightArithImm(dst, src, kSmiShift - elementSizeLog2); |
| 1215 } else if (!dst.is(src)) { |
| 1216 mr(dst, src); |
| 1217 } |
| 1218 } |
| 1219 |
| 1220 void IndexToArrayOffset(Register dst, Register src, int elementSizeLog2, |
| 1221 bool isSmi) { |
| 1222 if (isSmi) { |
| 1223 SmiToArrayOffset(dst, src, elementSizeLog2); |
| 1224 } else { |
| 1225 ShiftLeftImm(dst, src, Operand(elementSizeLog2)); |
| 1226 } |
1245 } | 1227 } |
1246 | 1228 |
1247 // Untag the source value into destination and jump if source is a smi. | 1229 // Untag the source value into destination and jump if source is a smi. |
1248 // Souce and destination can be the same register. | 1230 // Souce and destination can be the same register. |
1249 void UntagAndJumpIfSmi(Register dst, Register src, Label* smi_case); | 1231 void UntagAndJumpIfSmi(Register dst, Register src, Label* smi_case); |
1250 | 1232 |
1251 // Untag the source value into destination and jump if source is not a smi. | 1233 // Untag the source value into destination and jump if source is not a smi. |
1252 // Souce and destination can be the same register. | 1234 // Souce and destination can be the same register. |
1253 void UntagAndJumpIfNotSmi(Register dst, Register src, Label* non_smi_case); | 1235 void UntagAndJumpIfNotSmi(Register dst, Register src, Label* non_smi_case); |
1254 | 1236 |
1255 // Test if the register contains a smi (Z == 0 (eq) if true). | 1237 inline void TestIfSmi(Register value, Register scratch) { |
1256 inline void SmiTst(Register value) { | 1238 TestBit(value, 0, scratch); // tst(value, Operand(kSmiTagMask)); |
1257 tst(value, Operand(kSmiTagMask)); | |
1258 } | 1239 } |
1259 inline void NonNegativeSmiTst(Register value) { | 1240 |
1260 tst(value, Operand(kSmiTagMask | kSmiSignMask)); | 1241 inline void TestIfPositiveSmi(Register value, Register scratch) { |
| 1242 STATIC_ASSERT((kSmiTagMask | kSmiSignMask) == |
| 1243 (intptr_t)(1UL << (kBitsPerPointer - 1) | 1)); |
| 1244 #if V8_TARGET_ARCH_PPC64 |
| 1245 rldicl(scratch, value, 1, kBitsPerPointer - 2, SetRC); |
| 1246 #else |
| 1247 rlwinm(scratch, value, 1, kBitsPerPointer - 2, kBitsPerPointer - 1, SetRC); |
| 1248 #endif |
1261 } | 1249 } |
1262 // Jump if the register contains a smi. | 1250 |
| 1251 // Jump the register contains a smi. |
1263 inline void JumpIfSmi(Register value, Label* smi_label) { | 1252 inline void JumpIfSmi(Register value, Label* smi_label) { |
1264 tst(value, Operand(kSmiTagMask)); | 1253 TestIfSmi(value, r0); |
1265 b(eq, smi_label); | 1254 beq(smi_label, cr0); // branch if SMI |
1266 } | 1255 } |
1267 // Jump if either of the registers contain a non-smi. | 1256 // Jump if either of the registers contain a non-smi. |
1268 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { | 1257 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { |
1269 tst(value, Operand(kSmiTagMask)); | 1258 TestIfSmi(value, r0); |
1270 b(ne, not_smi_label); | 1259 bne(not_smi_label, cr0); |
1271 } | 1260 } |
1272 // Jump if either of the registers contain a non-smi. | 1261 // Jump if either of the registers contain a non-smi. |
1273 void JumpIfNotBothSmi(Register reg1, Register reg2, Label* on_not_both_smi); | 1262 void JumpIfNotBothSmi(Register reg1, Register reg2, Label* on_not_both_smi); |
1274 // Jump if either of the registers contain a smi. | 1263 // Jump if either of the registers contain a smi. |
1275 void JumpIfEitherSmi(Register reg1, Register reg2, Label* on_either_smi); | 1264 void JumpIfEitherSmi(Register reg1, Register reg2, Label* on_either_smi); |
1276 | 1265 |
1277 // Abort execution if argument is a smi, enabled via --debug-code. | 1266 // Abort execution if argument is a smi, enabled via --debug-code. |
1278 void AssertNotSmi(Register object); | 1267 void AssertNotSmi(Register object); |
1279 void AssertSmi(Register object); | 1268 void AssertSmi(Register object); |
1280 | 1269 |
| 1270 |
| 1271 #if V8_TARGET_ARCH_PPC64 |
| 1272 inline void TestIfInt32(Register value, Register scratch1, Register scratch2, |
| 1273 CRegister cr = cr7) { |
| 1274 // High bits must be identical to fit into an 32-bit integer |
| 1275 srawi(scratch1, value, 31); |
| 1276 sradi(scratch2, value, 32); |
| 1277 cmp(scratch1, scratch2, cr); |
| 1278 } |
| 1279 #else |
| 1280 inline void TestIfInt32(Register hi_word, Register lo_word, Register scratch, |
| 1281 CRegister cr = cr7) { |
| 1282 // High bits must be identical to fit into an 32-bit integer |
| 1283 srawi(scratch, lo_word, 31); |
| 1284 cmp(scratch, hi_word, cr); |
| 1285 } |
| 1286 #endif |
| 1287 |
1281 // Abort execution if argument is not a string, enabled via --debug-code. | 1288 // Abort execution if argument is not a string, enabled via --debug-code. |
1282 void AssertString(Register object); | 1289 void AssertString(Register object); |
1283 | 1290 |
1284 // Abort execution if argument is not a name, enabled via --debug-code. | 1291 // Abort execution if argument is not a name, enabled via --debug-code. |
1285 void AssertName(Register object); | 1292 void AssertName(Register object); |
1286 | 1293 |
1287 // Abort execution if argument is not undefined or an AllocationSite, enabled | 1294 // Abort execution if argument is not undefined or an AllocationSite, enabled |
1288 // via --debug-code. | 1295 // via --debug-code. |
1289 void AssertUndefinedOrAllocationSite(Register object, Register scratch); | 1296 void AssertUndefinedOrAllocationSite(Register object, Register scratch); |
1290 | 1297 |
1291 // Abort execution if reg is not the root value with the given index, | 1298 // Abort execution if reg is not the root value with the given index, |
1292 // enabled via --debug-code. | 1299 // enabled via --debug-code. |
1293 void AssertIsRoot(Register reg, Heap::RootListIndex index); | 1300 void AssertIsRoot(Register reg, Heap::RootListIndex index); |
1294 | 1301 |
1295 // --------------------------------------------------------------------------- | 1302 // --------------------------------------------------------------------------- |
1296 // HeapNumber utilities | 1303 // HeapNumber utilities |
1297 | 1304 |
1298 void JumpIfNotHeapNumber(Register object, | 1305 void JumpIfNotHeapNumber(Register object, Register heap_number_map, |
1299 Register heap_number_map, | 1306 Register scratch, Label* on_not_heap_number); |
1300 Register scratch, | |
1301 Label* on_not_heap_number); | |
1302 | 1307 |
1303 // --------------------------------------------------------------------------- | 1308 // --------------------------------------------------------------------------- |
1304 // String utilities | 1309 // String utilities |
1305 | 1310 |
1306 // Generate code to do a lookup in the number string cache. If the number in | 1311 // Generate code to do a lookup in the number string cache. If the number in |
1307 // the register object is found in the cache the generated code falls through | 1312 // the register object is found in the cache the generated code falls through |
1308 // with the result in the result register. The object and the result register | 1313 // with the result in the result register. The object and the result register |
1309 // can be the same. If the number is not found in the cache the code jumps to | 1314 // can be the same. If the number is not found in the cache the code jumps to |
1310 // the label not_found with only the content of register object unchanged. | 1315 // the label not_found with only the content of register object unchanged. |
1311 void LookupNumberStringCache(Register object, | 1316 void LookupNumberStringCache(Register object, Register result, |
1312 Register result, | 1317 Register scratch1, Register scratch2, |
1313 Register scratch1, | 1318 Register scratch3, Label* not_found); |
1314 Register scratch2, | |
1315 Register scratch3, | |
1316 Label* not_found); | |
1317 | 1319 |
1318 // Checks if both objects are sequential one-byte strings and jumps to label | 1320 // Checks if both objects are sequential one-byte strings and jumps to label |
1319 // if either is not. Assumes that neither object is a smi. | 1321 // if either is not. Assumes that neither object is a smi. |
1320 void JumpIfNonSmisNotBothSequentialOneByteStrings(Register object1, | 1322 void JumpIfNonSmisNotBothSequentialOneByteStrings(Register object1, |
1321 Register object2, | 1323 Register object2, |
1322 Register scratch1, | 1324 Register scratch1, |
1323 Register scratch2, | 1325 Register scratch2, |
1324 Label* failure); | 1326 Label* failure); |
1325 | 1327 |
1326 // Checks if both objects are sequential one-byte strings and jumps to label | 1328 // Checks if both objects are sequential one-byte strings and jumps to label |
1327 // if either is not. | 1329 // if either is not. |
1328 void JumpIfNotBothSequentialOneByteStrings(Register first, Register second, | 1330 void JumpIfNotBothSequentialOneByteStrings(Register first, Register second, |
1329 Register scratch1, | 1331 Register scratch1, |
1330 Register scratch2, | 1332 Register scratch2, |
1331 Label* not_flat_one_byte_strings); | 1333 Label* not_flat_one_byte_strings); |
1332 | 1334 |
1333 // Checks if both instance types are sequential one-byte strings and jumps to | 1335 // Checks if both instance types are sequential one-byte strings and jumps to |
1334 // label if either is not. | 1336 // label if either is not. |
1335 void JumpIfBothInstanceTypesAreNotSequentialOneByte( | 1337 void JumpIfBothInstanceTypesAreNotSequentialOneByte( |
1336 Register first_object_instance_type, Register second_object_instance_type, | 1338 Register first_object_instance_type, Register second_object_instance_type, |
1337 Register scratch1, Register scratch2, Label* failure); | 1339 Register scratch1, Register scratch2, Label* failure); |
1338 | 1340 |
1339 // Check if instance type is sequential one-byte string and jump to label if | 1341 // Check if instance type is sequential one-byte string and jump to label if |
1340 // it is not. | 1342 // it is not. |
1341 void JumpIfInstanceTypeIsNotSequentialOneByte(Register type, Register scratch, | 1343 void JumpIfInstanceTypeIsNotSequentialOneByte(Register type, Register scratch, |
1342 Label* failure); | 1344 Label* failure); |
1343 | 1345 |
1344 void JumpIfNotUniqueNameInstanceType(Register reg, Label* not_unique_name); | 1346 void JumpIfNotUniqueNameInstanceType(Register reg, Label* not_unique_name); |
1345 | 1347 |
1346 void EmitSeqStringSetCharCheck(Register string, | 1348 void EmitSeqStringSetCharCheck(Register string, Register index, |
1347 Register index, | 1349 Register value, uint32_t encoding_mask); |
1348 Register value, | |
1349 uint32_t encoding_mask); | |
1350 | 1350 |
1351 // --------------------------------------------------------------------------- | 1351 // --------------------------------------------------------------------------- |
1352 // Patching helpers. | 1352 // Patching helpers. |
1353 | 1353 |
1354 // Get the location of a relocated constant (its address in the constant pool) | 1354 // Retrieve/patch the relocated value (lis/ori pair or constant pool load). |
1355 // from its load site. | 1355 void GetRelocatedValue(Register location, Register result, Register scratch); |
1356 void GetRelocatedValueLocation(Register ldr_location, Register result, | 1356 void SetRelocatedValue(Register location, Register scratch, |
1357 Register scratch); | 1357 Register new_value); |
1358 | |
1359 | 1358 |
1360 void ClampUint8(Register output_reg, Register input_reg); | 1359 void ClampUint8(Register output_reg, Register input_reg); |
1361 | 1360 |
1362 void ClampDoubleToUint8(Register result_reg, | 1361 // Saturate a value into 8-bit unsigned integer |
1363 DwVfpRegister input_reg, | 1362 // if input_value < 0, output_value is 0 |
1364 LowDwVfpRegister double_scratch); | 1363 // if input_value > 255, output_value is 255 |
| 1364 // otherwise output_value is the (int)input_value (round to nearest) |
| 1365 void ClampDoubleToUint8(Register result_reg, DoubleRegister input_reg, |
| 1366 DoubleRegister temp_double_reg); |
1365 | 1367 |
1366 | 1368 |
1367 void LoadInstanceDescriptors(Register map, Register descriptors); | 1369 void LoadInstanceDescriptors(Register map, Register descriptors); |
1368 void EnumLength(Register dst, Register map); | 1370 void EnumLength(Register dst, Register map); |
1369 void NumberOfOwnDescriptors(Register dst, Register map); | 1371 void NumberOfOwnDescriptors(Register dst, Register map); |
1370 | 1372 |
1371 template<typename Field> | 1373 template <typename Field> |
1372 void DecodeField(Register dst, Register src) { | 1374 void DecodeField(Register dst, Register src) { |
1373 Ubfx(dst, src, Field::kShift, Field::kSize); | 1375 ExtractBitRange(dst, src, Field::kShift + Field::kSize - 1, Field::kShift); |
1374 } | 1376 } |
1375 | 1377 |
1376 template<typename Field> | 1378 template <typename Field> |
1377 void DecodeField(Register reg) { | 1379 void DecodeField(Register reg) { |
1378 DecodeField<Field>(reg, reg); | 1380 DecodeField<Field>(reg, reg); |
1379 } | 1381 } |
1380 | 1382 |
1381 template<typename Field> | 1383 template <typename Field> |
1382 void DecodeFieldToSmi(Register dst, Register src) { | 1384 void DecodeFieldToSmi(Register dst, Register src) { |
1383 static const int shift = Field::kShift; | 1385 #if V8_TARGET_ARCH_PPC64 |
1384 static const int mask = Field::kMask >> shift << kSmiTagSize; | 1386 DecodeField<Field>(dst, src); |
1385 STATIC_ASSERT((mask & (0x80000000u >> (kSmiTagSize - 1))) == 0); | 1387 SmiTag(dst); |
1386 STATIC_ASSERT(kSmiTag == 0); | 1388 #else |
1387 if (shift < kSmiTagSize) { | 1389 // 32-bit can do this in one instruction: |
1388 mov(dst, Operand(src, LSL, kSmiTagSize - shift)); | 1390 int start = Field::kSize + kSmiShift - 1; |
1389 and_(dst, dst, Operand(mask)); | 1391 int end = kSmiShift; |
1390 } else if (shift > kSmiTagSize) { | 1392 int rotate = kSmiShift - Field::kShift; |
1391 mov(dst, Operand(src, LSR, shift - kSmiTagSize)); | 1393 if (rotate < 0) { |
1392 and_(dst, dst, Operand(mask)); | 1394 rotate += kBitsPerPointer; |
1393 } else { | |
1394 and_(dst, src, Operand(mask)); | |
1395 } | 1395 } |
| 1396 rlwinm(dst, src, rotate, kBitsPerPointer - start - 1, |
| 1397 kBitsPerPointer - end - 1); |
| 1398 #endif |
1396 } | 1399 } |
1397 | 1400 |
1398 template<typename Field> | 1401 template <typename Field> |
1399 void DecodeFieldToSmi(Register reg) { | 1402 void DecodeFieldToSmi(Register reg) { |
1400 DecodeField<Field>(reg, reg); | 1403 DecodeFieldToSmi<Field>(reg, reg); |
1401 } | 1404 } |
1402 | 1405 |
1403 // Activation support. | 1406 // Activation support. |
1404 void EnterFrame(StackFrame::Type type, | 1407 void EnterFrame(StackFrame::Type type, |
1405 bool load_constant_pool_pointer_reg = false); | 1408 bool load_constant_pool_pointer_reg = false); |
1406 // Returns the pc offset at which the frame ends. | 1409 // Returns the pc offset at which the frame ends. |
1407 int LeaveFrame(StackFrame::Type type); | 1410 int LeaveFrame(StackFrame::Type type, int stack_adjustment = 0); |
1408 | 1411 |
1409 // Expects object in r0 and returns map with validated enum cache | 1412 // Expects object in r0 and returns map with validated enum cache |
1410 // in r0. Assumes that any other register can be used as a scratch. | 1413 // in r0. Assumes that any other register can be used as a scratch. |
1411 void CheckEnumCache(Register null_value, Label* call_runtime); | 1414 void CheckEnumCache(Register null_value, Label* call_runtime); |
1412 | 1415 |
1413 // AllocationMemento support. Arrays may have an associated | 1416 // AllocationMemento support. Arrays may have an associated |
1414 // AllocationMemento object that can be checked for in order to pretransition | 1417 // AllocationMemento object that can be checked for in order to pretransition |
1415 // to another type. | 1418 // to another type. |
1416 // On entry, receiver_reg should point to the array object. | 1419 // On entry, receiver_reg should point to the array object. |
1417 // scratch_reg gets clobbered. | 1420 // scratch_reg gets clobbered. |
1418 // If allocation info is present, condition flags are set to eq. | 1421 // If allocation info is present, condition flags are set to eq. |
1419 void TestJSArrayForAllocationMemento(Register receiver_reg, | 1422 void TestJSArrayForAllocationMemento(Register receiver_reg, |
1420 Register scratch_reg, | 1423 Register scratch_reg, |
1421 Label* no_memento_found); | 1424 Label* no_memento_found); |
1422 | 1425 |
1423 void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, | 1426 void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, |
1424 Register scratch_reg, | 1427 Register scratch_reg, |
1425 Label* memento_found) { | 1428 Label* memento_found) { |
1426 Label no_memento_found; | 1429 Label no_memento_found; |
1427 TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, | 1430 TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, |
1428 &no_memento_found); | 1431 &no_memento_found); |
1429 b(eq, memento_found); | 1432 beq(memento_found); |
1430 bind(&no_memento_found); | 1433 bind(&no_memento_found); |
1431 } | 1434 } |
1432 | 1435 |
1433 // Jumps to found label if a prototype map has dictionary elements. | 1436 // Jumps to found label if a prototype map has dictionary elements. |
1434 void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, | 1437 void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, |
1435 Register scratch1, Label* found); | 1438 Register scratch1, Label* found); |
1436 | 1439 |
1437 private: | 1440 private: |
1438 void CallCFunctionHelper(Register function, | 1441 static const int kSmiShift = kSmiTagSize + kSmiShiftSize; |
1439 int num_reg_arguments, | 1442 |
| 1443 void CallCFunctionHelper(Register function, int num_reg_arguments, |
1440 int num_double_arguments); | 1444 int num_double_arguments); |
1441 | 1445 |
1442 void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al); | 1446 void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al, |
| 1447 CRegister cr = cr7); |
1443 | 1448 |
1444 // Helper functions for generating invokes. | 1449 // Helper functions for generating invokes. |
1445 void InvokePrologue(const ParameterCount& expected, | 1450 void InvokePrologue(const ParameterCount& expected, |
1446 const ParameterCount& actual, | 1451 const ParameterCount& actual, Handle<Code> code_constant, |
1447 Handle<Code> code_constant, | 1452 Register code_reg, Label* done, |
1448 Register code_reg, | 1453 bool* definitely_mismatches, InvokeFlag flag, |
1449 Label* done, | |
1450 bool* definitely_mismatches, | |
1451 InvokeFlag flag, | |
1452 const CallWrapper& call_wrapper); | 1454 const CallWrapper& call_wrapper); |
1453 | 1455 |
1454 void InitializeNewString(Register string, | 1456 void InitializeNewString(Register string, Register length, |
1455 Register length, | 1457 Heap::RootListIndex map_index, Register scratch1, |
1456 Heap::RootListIndex map_index, | |
1457 Register scratch1, | |
1458 Register scratch2); | 1458 Register scratch2); |
1459 | 1459 |
1460 // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace. | 1460 // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace. |
1461 void InNewSpace(Register object, | 1461 void InNewSpace(Register object, Register scratch, |
1462 Register scratch, | |
1463 Condition cond, // eq for new space, ne otherwise. | 1462 Condition cond, // eq for new space, ne otherwise. |
1464 Label* branch); | 1463 Label* branch); |
1465 | 1464 |
1466 // Helper for finding the mark bits for an address. Afterwards, the | 1465 // Helper for finding the mark bits for an address. Afterwards, the |
1467 // bitmap register points at the word with the mark bits and the mask | 1466 // bitmap register points at the word with the mark bits and the mask |
1468 // the position of the first bit. Leaves addr_reg unchanged. | 1467 // the position of the first bit. Leaves addr_reg unchanged. |
1469 inline void GetMarkBits(Register addr_reg, | 1468 inline void GetMarkBits(Register addr_reg, Register bitmap_reg, |
1470 Register bitmap_reg, | |
1471 Register mask_reg); | 1469 Register mask_reg); |
1472 | 1470 |
1473 // Helper for throwing exceptions. Compute a handler address and jump to | 1471 // Helper for throwing exceptions. Compute a handler address and jump to |
1474 // it. See the implementation for register usage. | 1472 // it. See the implementation for register usage. |
1475 void JumpToHandlerEntry(); | 1473 void JumpToHandlerEntry(); |
1476 | 1474 |
1477 // Compute memory operands for safepoint stack slots. | 1475 // Compute memory operands for safepoint stack slots. |
1478 static int SafepointRegisterStackIndex(int reg_code); | 1476 static int SafepointRegisterStackIndex(int reg_code); |
1479 MemOperand SafepointRegisterSlot(Register reg); | 1477 MemOperand SafepointRegisterSlot(Register reg); |
1480 MemOperand SafepointRegistersAndDoublesSlot(Register reg); | 1478 MemOperand SafepointRegistersAndDoublesSlot(Register reg); |
1481 | 1479 |
1482 // Loads the constant pool pointer (pp) register. | 1480 #if V8_OOL_CONSTANT_POOL |
1483 void LoadConstantPoolPointerRegister(); | 1481 // Loads the constant pool pointer (kConstantPoolRegister). |
| 1482 enum CodeObjectAccessMethod { CAN_USE_IP, CONSTRUCT_INTERNAL_REFERENCE }; |
| 1483 void LoadConstantPoolPointerRegister(CodeObjectAccessMethod access_method, |
| 1484 int ip_code_entry_delta = 0); |
| 1485 #endif |
1484 | 1486 |
1485 bool generating_stub_; | 1487 bool generating_stub_; |
1486 bool has_frame_; | 1488 bool has_frame_; |
1487 // This handle will be patched with the code object on installation. | 1489 // This handle will be patched with the code object on installation. |
1488 Handle<Object> code_object_; | 1490 Handle<Object> code_object_; |
1489 | 1491 |
1490 // Needs access to SafepointRegisterStackIndex for compiled frame | 1492 // Needs access to SafepointRegisterStackIndex for compiled frame |
1491 // traversal. | 1493 // traversal. |
1492 friend class StandardFrame; | 1494 friend class StandardFrame; |
1493 }; | 1495 }; |
1494 | 1496 |
1495 | 1497 |
1496 // The code patcher is used to patch (typically) small parts of code e.g. for | 1498 // The code patcher is used to patch (typically) small parts of code e.g. for |
1497 // debugging and other types of instrumentation. When using the code patcher | 1499 // debugging and other types of instrumentation. When using the code patcher |
1498 // the exact number of bytes specified must be emitted. It is not legal to emit | 1500 // the exact number of bytes specified must be emitted. It is not legal to emit |
1499 // relocation information. If any of these constraints are violated it causes | 1501 // relocation information. If any of these constraints are violated it causes |
1500 // an assertion to fail. | 1502 // an assertion to fail. |
1501 class CodePatcher { | 1503 class CodePatcher { |
1502 public: | 1504 public: |
1503 enum FlushICache { | 1505 enum FlushICache { FLUSH, DONT_FLUSH }; |
1504 FLUSH, | |
1505 DONT_FLUSH | |
1506 }; | |
1507 | 1506 |
1508 CodePatcher(byte* address, | 1507 CodePatcher(byte* address, int instructions, FlushICache flush_cache = FLUSH); |
1509 int instructions, | |
1510 FlushICache flush_cache = FLUSH); | |
1511 virtual ~CodePatcher(); | 1508 virtual ~CodePatcher(); |
1512 | 1509 |
1513 // Macro assembler to emit code. | 1510 // Macro assembler to emit code. |
1514 MacroAssembler* masm() { return &masm_; } | 1511 MacroAssembler* masm() { return &masm_; } |
1515 | 1512 |
1516 // Emit an instruction directly. | 1513 // Emit an instruction directly. |
1517 void Emit(Instr instr); | 1514 void Emit(Instr instr); |
1518 | 1515 |
1519 // Emit an address directly. | |
1520 void Emit(Address addr); | |
1521 | |
1522 // Emit the condition part of an instruction leaving the rest of the current | 1516 // Emit the condition part of an instruction leaving the rest of the current |
1523 // instruction unchanged. | 1517 // instruction unchanged. |
1524 void EmitCondition(Condition cond); | 1518 void EmitCondition(Condition cond); |
1525 | 1519 |
1526 private: | 1520 private: |
1527 byte* address_; // The address of the code being patched. | 1521 byte* address_; // The address of the code being patched. |
1528 int size_; // Number of bytes of the expected patch size. | 1522 int size_; // Number of bytes of the expected patch size. |
1529 MacroAssembler masm_; // Macro assembler used to generate the code. | 1523 MacroAssembler masm_; // Macro assembler used to generate the code. |
1530 FlushICache flush_cache_; // Whether to flush the I cache after patching. | 1524 FlushICache flush_cache_; // Whether to flush the I cache after patching. |
1531 }; | 1525 }; |
1532 | 1526 |
1533 | 1527 |
1534 // ----------------------------------------------------------------------------- | 1528 // ----------------------------------------------------------------------------- |
1535 // Static helper functions. | 1529 // Static helper functions. |
1536 | 1530 |
1537 inline MemOperand ContextOperand(Register context, int index) { | 1531 inline MemOperand ContextOperand(Register context, int index) { |
1538 return MemOperand(context, Context::SlotOffset(index)); | 1532 return MemOperand(context, Context::SlotOffset(index)); |
1539 } | 1533 } |
1540 | 1534 |
1541 | 1535 |
1542 inline MemOperand GlobalObjectOperand() { | 1536 inline MemOperand GlobalObjectOperand() { |
1543 return ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX); | 1537 return ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX); |
1544 } | 1538 } |
1545 | 1539 |
1546 | 1540 |
1547 #ifdef GENERATED_CODE_COVERAGE | 1541 #ifdef GENERATED_CODE_COVERAGE |
1548 #define CODE_COVERAGE_STRINGIFY(x) #x | 1542 #define CODE_COVERAGE_STRINGIFY(x) #x |
1549 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) | 1543 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) |
1550 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 1544 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
1551 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 1545 #define ACCESS_MASM(masm) \ |
| 1546 masm->stop(__FILE_LINE__); \ |
| 1547 masm-> |
1552 #else | 1548 #else |
1553 #define ACCESS_MASM(masm) masm-> | 1549 #define ACCESS_MASM(masm) masm-> |
1554 #endif | 1550 #endif |
| 1551 } |
| 1552 } // namespace v8::internal |
1555 | 1553 |
1556 | 1554 #endif // V8_PPC_MACRO_ASSEMBLER_PPC_H_ |
1557 } } // namespace v8::internal | |
1558 | |
1559 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | |
OLD | NEW |