OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // |
| 3 // Copyright IBM Corp. 2012, 2013. All rights reserved. |
| 4 // |
2 // Use of this source code is governed by a BSD-style license that can be | 5 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 6 // found in the LICENSE file. |
4 | 7 |
5 #ifndef V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 8 #ifndef V8_PPC_MACRO_ASSEMBLER_PPC_H_ |
6 #define V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 9 #define V8_PPC_MACRO_ASSEMBLER_PPC_H_ |
7 | 10 |
8 #include "src/assembler.h" | 11 #include "src/assembler.h" |
9 #include "src/frames.h" | 12 #include "src/frames.h" |
10 #include "src/globals.h" | 13 #include "src/globals.h" |
11 | 14 |
12 namespace v8 { | 15 namespace v8 { |
13 namespace internal { | 16 namespace internal { |
14 | 17 |
15 // ---------------------------------------------------------------------------- | 18 // ---------------------------------------------------------------------------- |
16 // Static helper functions | 19 // Static helper functions |
17 | 20 |
18 // Generate a MemOperand for loading a field from an object. | 21 // Generate a MemOperand for loading a field from an object. |
19 inline MemOperand FieldMemOperand(Register object, int offset) { | 22 inline MemOperand FieldMemOperand(Register object, int offset) { |
20 return MemOperand(object, offset - kHeapObjectTag); | 23 return MemOperand(object, offset - kHeapObjectTag); |
21 } | 24 } |
22 | 25 |
23 | 26 |
24 // Give alias names to registers | |
25 const Register cp = { kRegister_r7_Code }; // JavaScript context pointer. | |
26 const Register pp = { kRegister_r8_Code }; // Constant pool pointer. | |
27 const Register kRootRegister = { kRegister_r10_Code }; // Roots array pointer. | |
28 | |
29 // Flags used for AllocateHeapNumber | 27 // Flags used for AllocateHeapNumber |
30 enum TaggingMode { | 28 enum TaggingMode { |
31 // Tag the result. | 29 // Tag the result. |
32 TAG_RESULT, | 30 TAG_RESULT, |
33 // Don't tag | 31 // Don't tag |
34 DONT_TAG_RESULT | 32 DONT_TAG_RESULT |
35 }; | 33 }; |
36 | 34 |
37 | 35 |
38 enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; | 36 enum RememberedSetAction { EMIT_REMEMBERED_SET, OMIT_REMEMBERED_SET }; |
39 enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; | 37 enum SmiCheck { INLINE_SMI_CHECK, OMIT_SMI_CHECK }; |
40 enum PointersToHereCheck { | 38 enum PointersToHereCheck { |
41 kPointersToHereMaybeInteresting, | 39 kPointersToHereMaybeInteresting, |
42 kPointersToHereAreAlwaysInteresting | 40 kPointersToHereAreAlwaysInteresting |
43 }; | 41 }; |
44 enum LinkRegisterStatus { kLRHasNotBeenSaved, kLRHasBeenSaved }; | 42 enum LinkRegisterStatus { kLRHasNotBeenSaved, kLRHasBeenSaved }; |
45 | 43 |
46 | 44 |
47 Register GetRegisterThatIsNotOneOf(Register reg1, | 45 Register GetRegisterThatIsNotOneOf(Register reg1, Register reg2 = no_reg, |
48 Register reg2 = no_reg, | |
49 Register reg3 = no_reg, | 46 Register reg3 = no_reg, |
50 Register reg4 = no_reg, | 47 Register reg4 = no_reg, |
51 Register reg5 = no_reg, | 48 Register reg5 = no_reg, |
52 Register reg6 = no_reg); | 49 Register reg6 = no_reg); |
53 | 50 |
54 | 51 |
55 #ifdef DEBUG | 52 #ifdef DEBUG |
56 bool AreAliased(Register reg1, | 53 bool AreAliased(Register reg1, Register reg2, Register reg3 = no_reg, |
57 Register reg2, | 54 Register reg4 = no_reg, Register reg5 = no_reg, |
58 Register reg3 = no_reg, | 55 Register reg6 = no_reg, Register reg7 = no_reg, |
59 Register reg4 = no_reg, | |
60 Register reg5 = no_reg, | |
61 Register reg6 = no_reg, | |
62 Register reg7 = no_reg, | |
63 Register reg8 = no_reg); | 56 Register reg8 = no_reg); |
64 #endif | 57 #endif |
65 | 58 |
| 59 // These exist to provide portability between 32 and 64bit |
| 60 #if V8_TARGET_ARCH_PPC64 |
| 61 #define LoadPU ldu |
| 62 #define LoadPX ldx |
| 63 #define LoadPUX ldux |
| 64 #define StorePU stdu |
| 65 #define StorePX stdx |
| 66 #define StorePUX stdux |
| 67 #define ShiftLeftImm sldi |
| 68 #define ShiftRightImm srdi |
| 69 #define ClearLeftImm clrldi |
| 70 #define ClearRightImm clrrdi |
| 71 #define ShiftRightArithImm sradi |
| 72 #define ShiftLeft sld |
| 73 #define ShiftRight srd |
| 74 #define ShiftRightArith srad |
| 75 #define Mul mulld |
| 76 #define Div divd |
| 77 #else |
| 78 #define LoadPU lwzu |
| 79 #define LoadPX lwzx |
| 80 #define LoadPUX lwzux |
| 81 #define StorePU stwu |
| 82 #define StorePX stwx |
| 83 #define StorePUX stwux |
| 84 #define ShiftLeftImm slwi |
| 85 #define ShiftRightImm srwi |
| 86 #define ClearLeftImm clrlwi |
| 87 #define ClearRightImm clrrwi |
| 88 #define ShiftRightArithImm srawi |
| 89 #define ShiftLeft slw |
| 90 #define ShiftRight srw |
| 91 #define ShiftRightArith sraw |
| 92 #define Mul mullw |
| 93 #define Div divw |
| 94 #endif |
66 | 95 |
67 enum TargetAddressStorageMode { | |
68 CAN_INLINE_TARGET_ADDRESS, | |
69 NEVER_INLINE_TARGET_ADDRESS | |
70 }; | |
71 | 96 |
72 // MacroAssembler implements a collection of frequently used macros. | 97 // MacroAssembler implements a collection of frequently used macros. |
73 class MacroAssembler: public Assembler { | 98 class MacroAssembler : public Assembler { |
74 public: | 99 public: |
75 // The isolate parameter can be NULL if the macro assembler should | 100 // The isolate parameter can be NULL if the macro assembler should |
76 // not use isolate-dependent functionality. In this case, it's the | 101 // not use isolate-dependent functionality. In this case, it's the |
77 // responsibility of the caller to never invoke such function on the | 102 // responsibility of the caller to never invoke such function on the |
78 // macro assembler. | 103 // macro assembler. |
79 MacroAssembler(Isolate* isolate, void* buffer, int size); | 104 MacroAssembler(Isolate* isolate, void* buffer, int size); |
80 | 105 |
81 | 106 |
82 // Returns the size of a call in instructions. Note, the value returned is | 107 // Returns the size of a call in instructions. Note, the value returned is |
83 // only valid as long as no entries are added to the constant pool between | 108 // only valid as long as no entries are added to the constant pool between |
84 // checking the call size and emitting the actual call. | 109 // checking the call size and emitting the actual call. |
85 static int CallSize(Register target, Condition cond = al); | 110 static int CallSize(Register target, Condition cond = al); |
86 int CallSize(Address target, RelocInfo::Mode rmode, Condition cond = al); | 111 int CallSize(Address target, RelocInfo::Mode rmode, Condition cond = al); |
87 int CallStubSize(CodeStub* stub, | 112 static int CallSizeNotPredictableCodeSize(Address target, |
88 TypeFeedbackId ast_id = TypeFeedbackId::None(), | |
89 Condition cond = al); | |
90 static int CallSizeNotPredictableCodeSize(Isolate* isolate, | |
91 Address target, | |
92 RelocInfo::Mode rmode, | 113 RelocInfo::Mode rmode, |
93 Condition cond = al); | 114 Condition cond = al); |
94 | 115 |
95 // Jump, Call, and Ret pseudo instructions implementing inter-working. | 116 // Jump, Call, and Ret pseudo instructions implementing inter-working. |
96 void Jump(Register target, Condition cond = al); | 117 void Jump(Register target, Condition cond = al); |
97 void Jump(Address target, RelocInfo::Mode rmode, Condition cond = al); | 118 void Jump(Address target, RelocInfo::Mode rmode, Condition cond = al, |
| 119 CRegister cr = cr7); |
98 void Jump(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al); | 120 void Jump(Handle<Code> code, RelocInfo::Mode rmode, Condition cond = al); |
99 void Call(Register target, Condition cond = al); | 121 void Call(Register target, Condition cond = al); |
100 void Call(Address target, RelocInfo::Mode rmode, | 122 void Call(Address target, RelocInfo::Mode rmode, Condition cond = al); |
101 Condition cond = al, | |
102 TargetAddressStorageMode mode = CAN_INLINE_TARGET_ADDRESS); | |
103 int CallSize(Handle<Code> code, | 123 int CallSize(Handle<Code> code, |
104 RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, | 124 RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, |
105 TypeFeedbackId ast_id = TypeFeedbackId::None(), | 125 TypeFeedbackId ast_id = TypeFeedbackId::None(), |
106 Condition cond = al); | 126 Condition cond = al); |
107 void Call(Handle<Code> code, | 127 void Call(Handle<Code> code, RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, |
108 RelocInfo::Mode rmode = RelocInfo::CODE_TARGET, | |
109 TypeFeedbackId ast_id = TypeFeedbackId::None(), | 128 TypeFeedbackId ast_id = TypeFeedbackId::None(), |
110 Condition cond = al, | 129 Condition cond = al); |
111 TargetAddressStorageMode mode = CAN_INLINE_TARGET_ADDRESS); | |
112 void Ret(Condition cond = al); | 130 void Ret(Condition cond = al); |
113 | 131 |
114 // 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 |
115 // from the stack, clobbering only the sp register. | 133 // from the stack, clobbering only the sp register. |
116 void Drop(int count, Condition cond = al); | 134 void Drop(int count, Condition cond = al); |
117 | 135 |
118 void Ret(int drop, Condition cond = al); | 136 void Ret(int drop, Condition cond = al); |
119 | 137 |
120 // Swap two registers. If the scratch register is omitted then a slightly | 138 void Call(Label* target); |
121 // less efficient form using xor instead of mov is emitted. | |
122 void Swap(Register reg1, | |
123 Register reg2, | |
124 Register scratch = no_reg, | |
125 Condition cond = al); | |
126 | 139 |
127 void Mls(Register dst, Register src1, Register src2, Register srcA, | 140 // Emit call to the code we are currently generating. |
128 Condition cond = al); | 141 void CallSelf() { |
129 void And(Register dst, Register src1, const Operand& src2, | 142 Handle<Code> self(reinterpret_cast<Code**>(CodeObject().location())); |
130 Condition cond = al); | 143 Call(self, RelocInfo::CODE_TARGET); |
131 void Ubfx(Register dst, Register src, int lsb, int width, | 144 } |
132 Condition cond = al); | |
133 void Sbfx(Register dst, Register src, int lsb, int width, | |
134 Condition cond = al); | |
135 // The scratch register is not used for ARMv7. | |
136 // scratch can be the same register as src (in which case it is trashed), but | |
137 // not the same as dst. | |
138 void Bfi(Register dst, | |
139 Register src, | |
140 Register scratch, | |
141 int lsb, | |
142 int width, | |
143 Condition cond = al); | |
144 void Bfc(Register dst, Register src, int lsb, int width, Condition cond = al); | |
145 void Usat(Register dst, int satpos, const Operand& src, | |
146 Condition cond = al); | |
147 | |
148 void Call(Label* target); | |
149 void Push(Register src) { push(src); } | |
150 void Pop(Register dst) { pop(dst); } | |
151 | 145 |
152 // Register move. May do nothing if the registers are identical. | 146 // Register move. May do nothing if the registers are identical. |
153 void Move(Register dst, Handle<Object> value); | 147 void Move(Register dst, Handle<Object> value); |
154 void Move(Register dst, Register src, Condition cond = al); | 148 void Move(Register dst, Register src, Condition cond = al); |
155 void Move(Register dst, const Operand& src, SBit sbit = LeaveCC, | 149 void Move(DoubleRegister dst, DoubleRegister src); |
156 Condition cond = al) { | |
157 if (!src.is_reg() || !src.rm().is(dst) || sbit != LeaveCC) { | |
158 mov(dst, src, sbit, cond); | |
159 } | |
160 } | |
161 void Move(DwVfpRegister dst, DwVfpRegister src); | |
162 | 150 |
163 void Load(Register dst, const MemOperand& src, Representation r); | 151 void MultiPush(RegList regs); |
164 void Store(Register src, const MemOperand& dst, Representation r); | 152 void MultiPop(RegList regs); |
165 | 153 |
166 // Load an object from the root table. | 154 // Load an object from the root table. |
167 void LoadRoot(Register destination, | 155 void LoadRoot(Register destination, Heap::RootListIndex index, |
168 Heap::RootListIndex index, | |
169 Condition cond = al); | 156 Condition cond = al); |
170 // Store an object to the root table. | 157 // Store an object to the root table. |
171 void StoreRoot(Register source, | 158 void StoreRoot(Register source, Heap::RootListIndex index, |
172 Heap::RootListIndex index, | |
173 Condition cond = al); | 159 Condition cond = al); |
174 | 160 |
175 // --------------------------------------------------------------------------- | 161 // --------------------------------------------------------------------------- |
176 // GC Support | 162 // GC Support |
177 | 163 |
178 void IncrementalMarkingRecordWriteHelper(Register object, | 164 void IncrementalMarkingRecordWriteHelper(Register object, Register value, |
179 Register value, | |
180 Register address); | 165 Register address); |
181 | 166 |
182 enum RememberedSetFinalAction { | 167 enum RememberedSetFinalAction { kReturnAtEnd, kFallThroughAtEnd }; |
183 kReturnAtEnd, | |
184 kFallThroughAtEnd | |
185 }; | |
186 | 168 |
187 // 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 |
188 // 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 |
189 // in new space. | 171 // in new space. |
190 void RememberedSetHelper(Register object, // Used for debug code. | 172 void RememberedSetHelper(Register object, // Used for debug code. |
191 Register addr, | 173 Register addr, Register scratch, |
192 Register scratch, | |
193 SaveFPRegsMode save_fp, | 174 SaveFPRegsMode save_fp, |
194 RememberedSetFinalAction and_then); | 175 RememberedSetFinalAction and_then); |
195 | 176 |
196 void CheckPageFlag(Register object, | 177 void CheckPageFlag(Register object, Register scratch, int mask, Condition cc, |
197 Register scratch, | |
198 int mask, | |
199 Condition cc, | |
200 Label* condition_met); | 178 Label* condition_met); |
201 | 179 |
202 void CheckMapDeprecated(Handle<Map> map, | 180 void CheckMapDeprecated(Handle<Map> map, Register scratch, |
203 Register scratch, | |
204 Label* if_deprecated); | 181 Label* if_deprecated); |
205 | 182 |
206 // 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. |
207 // 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. |
208 void JumpIfNotInNewSpace(Register object, | 185 void JumpIfNotInNewSpace(Register object, Register scratch, Label* branch) { |
209 Register scratch, | |
210 Label* branch) { | |
211 InNewSpace(object, scratch, ne, branch); | 186 InNewSpace(object, scratch, ne, branch); |
212 } | 187 } |
213 | 188 |
214 // 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. |
215 // 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. |
216 void JumpIfInNewSpace(Register object, | 191 void JumpIfInNewSpace(Register object, Register scratch, Label* branch) { |
217 Register scratch, | |
218 Label* branch) { | |
219 InNewSpace(object, scratch, eq, branch); | 192 InNewSpace(object, scratch, eq, branch); |
220 } | 193 } |
221 | 194 |
222 // Check if an object has a given incremental marking color. | 195 // Check if an object has a given incremental marking color. |
223 void HasColor(Register object, | 196 void HasColor(Register object, Register scratch0, Register scratch1, |
224 Register scratch0, | 197 Label* has_color, int first_bit, int second_bit); |
225 Register scratch1, | |
226 Label* has_color, | |
227 int first_bit, | |
228 int second_bit); | |
229 | 198 |
230 void JumpIfBlack(Register object, | 199 void JumpIfBlack(Register object, Register scratch0, Register scratch1, |
231 Register scratch0, | |
232 Register scratch1, | |
233 Label* on_black); | 200 Label* on_black); |
234 | 201 |
235 // 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 |
236 // 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 |
237 // 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 |
238 // 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 |
239 // incremental marker can fix its assumptions. | 206 // incremental marker can fix its assumptions. |
240 void EnsureNotWhite(Register object, | 207 void EnsureNotWhite(Register object, Register scratch1, Register scratch2, |
241 Register scratch1, | 208 Register scratch3, Label* object_is_white_and_not_data); |
242 Register scratch2, | |
243 Register scratch3, | |
244 Label* object_is_white_and_not_data); | |
245 | 209 |
246 // 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 |
247 // be scanned by the garbage collector. | 211 // be scanned by the garbage collector. |
248 void JumpIfDataObject(Register value, | 212 void JumpIfDataObject(Register value, Register scratch, |
249 Register scratch, | |
250 Label* not_data_object); | 213 Label* not_data_object); |
251 | 214 |
252 // 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. |
253 // |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 |
254 // stored. value and scratch registers are clobbered by the operation. | 217 // stored. value and scratch registers are clobbered by the operation. |
255 // 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 |
256 // the tagged HeapObject pointer. For use with FieldOperand(reg, off). | 219 // the tagged HeapObject pointer. For use with FieldOperand(reg, off). |
257 void RecordWriteField( | 220 void RecordWriteField( |
258 Register object, | 221 Register object, int offset, Register value, Register scratch, |
259 int offset, | 222 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp, |
260 Register value, | |
261 Register scratch, | |
262 LinkRegisterStatus lr_status, | |
263 SaveFPRegsMode save_fp, | |
264 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, | 223 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
265 SmiCheck smi_check = INLINE_SMI_CHECK, | 224 SmiCheck smi_check = INLINE_SMI_CHECK, |
266 PointersToHereCheck pointers_to_here_check_for_value = | 225 PointersToHereCheck pointers_to_here_check_for_value = |
267 kPointersToHereMaybeInteresting); | 226 kPointersToHereMaybeInteresting); |
268 | 227 |
269 // 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 |
270 // MemOperand(reg, off). | 229 // MemOperand(reg, off). |
271 inline void RecordWriteContextSlot( | 230 inline void RecordWriteContextSlot( |
272 Register context, | 231 Register context, int offset, Register value, Register scratch, |
273 int offset, | 232 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp, |
274 Register value, | |
275 Register scratch, | |
276 LinkRegisterStatus lr_status, | |
277 SaveFPRegsMode save_fp, | |
278 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, | 233 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
279 SmiCheck smi_check = INLINE_SMI_CHECK, | 234 SmiCheck smi_check = INLINE_SMI_CHECK, |
280 PointersToHereCheck pointers_to_here_check_for_value = | 235 PointersToHereCheck pointers_to_here_check_for_value = |
281 kPointersToHereMaybeInteresting) { | 236 kPointersToHereMaybeInteresting) { |
282 RecordWriteField(context, | 237 RecordWriteField(context, offset + kHeapObjectTag, value, scratch, |
283 offset + kHeapObjectTag, | 238 lr_status, save_fp, remembered_set_action, smi_check, |
284 value, | |
285 scratch, | |
286 lr_status, | |
287 save_fp, | |
288 remembered_set_action, | |
289 smi_check, | |
290 pointers_to_here_check_for_value); | 239 pointers_to_here_check_for_value); |
291 } | 240 } |
292 | 241 |
293 void RecordWriteForMap( | 242 void RecordWriteForMap(Register object, Register map, Register dst, |
294 Register object, | 243 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp); |
295 Register map, | |
296 Register dst, | |
297 LinkRegisterStatus lr_status, | |
298 SaveFPRegsMode save_fp); | |
299 | 244 |
300 // 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| |
301 // 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 |
302 // address registers are clobbered by the operation. | 247 // address registers are clobbered by the operation. |
303 void RecordWrite( | 248 void RecordWrite( |
304 Register object, | 249 Register object, Register address, Register value, |
305 Register address, | 250 LinkRegisterStatus lr_status, SaveFPRegsMode save_fp, |
306 Register value, | |
307 LinkRegisterStatus lr_status, | |
308 SaveFPRegsMode save_fp, | |
309 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, | 251 RememberedSetAction remembered_set_action = EMIT_REMEMBERED_SET, |
310 SmiCheck smi_check = INLINE_SMI_CHECK, | 252 SmiCheck smi_check = INLINE_SMI_CHECK, |
311 PointersToHereCheck pointers_to_here_check_for_value = | 253 PointersToHereCheck pointers_to_here_check_for_value = |
312 kPointersToHereMaybeInteresting); | 254 kPointersToHereMaybeInteresting); |
313 | 255 |
| 256 void Push(Register src) { push(src); } |
| 257 |
314 // Push a handle. | 258 // Push a handle. |
315 void Push(Handle<Object> handle); | 259 void Push(Handle<Object> handle); |
316 void Push(Smi* smi) { Push(Handle<Smi>(smi, isolate())); } | 260 void Push(Smi* smi) { Push(Handle<Smi>(smi, isolate())); } |
317 | 261 |
318 // Push two registers. Pushes leftmost register first (to highest address). | 262 // Push two registers. Pushes leftmost register first (to highest address). |
319 void Push(Register src1, Register src2, Condition cond = al) { | 263 void Push(Register src1, Register src2) { |
320 DCHECK(!src1.is(src2)); | 264 StorePU(src1, MemOperand(sp, -kPointerSize)); |
321 if (src1.code() > src2.code()) { | 265 StorePU(src2, MemOperand(sp, -kPointerSize)); |
322 stm(db_w, sp, src1.bit() | src2.bit(), cond); | |
323 } else { | |
324 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | |
325 str(src2, MemOperand(sp, 4, NegPreIndex), cond); | |
326 } | |
327 } | 266 } |
328 | 267 |
329 // Push three registers. Pushes leftmost register first (to highest address). | 268 // Push three registers. Pushes leftmost register first (to highest address). |
330 void Push(Register src1, Register src2, Register src3, Condition cond = al) { | 269 void Push(Register src1, Register src2, Register src3) { |
331 DCHECK(!src1.is(src2)); | 270 StorePU(src1, MemOperand(sp, -kPointerSize)); |
332 DCHECK(!src2.is(src3)); | 271 StorePU(src2, MemOperand(sp, -kPointerSize)); |
333 DCHECK(!src1.is(src3)); | 272 StorePU(src3, MemOperand(sp, -kPointerSize)); |
334 if (src1.code() > src2.code()) { | |
335 if (src2.code() > src3.code()) { | |
336 stm(db_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
337 } else { | |
338 stm(db_w, sp, src1.bit() | src2.bit(), cond); | |
339 str(src3, MemOperand(sp, 4, NegPreIndex), cond); | |
340 } | |
341 } else { | |
342 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | |
343 Push(src2, src3, cond); | |
344 } | |
345 } | 273 } |
346 | 274 |
347 // Push four registers. Pushes leftmost register first (to highest address). | 275 // Push four registers. Pushes leftmost register first (to highest address). |
348 void Push(Register src1, | 276 void Push(Register src1, Register src2, Register src3, Register src4) { |
349 Register src2, | 277 StorePU(src1, MemOperand(sp, -kPointerSize)); |
350 Register src3, | 278 StorePU(src2, MemOperand(sp, -kPointerSize)); |
351 Register src4, | 279 StorePU(src3, MemOperand(sp, -kPointerSize)); |
352 Condition cond = al) { | 280 StorePU(src4, MemOperand(sp, -kPointerSize)); |
353 DCHECK(!src1.is(src2)); | |
354 DCHECK(!src2.is(src3)); | |
355 DCHECK(!src1.is(src3)); | |
356 DCHECK(!src1.is(src4)); | |
357 DCHECK(!src2.is(src4)); | |
358 DCHECK(!src3.is(src4)); | |
359 if (src1.code() > src2.code()) { | |
360 if (src2.code() > src3.code()) { | |
361 if (src3.code() > src4.code()) { | |
362 stm(db_w, | |
363 sp, | |
364 src1.bit() | src2.bit() | src3.bit() | src4.bit(), | |
365 cond); | |
366 } else { | |
367 stm(db_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
368 str(src4, MemOperand(sp, 4, NegPreIndex), cond); | |
369 } | |
370 } else { | |
371 stm(db_w, sp, src1.bit() | src2.bit(), cond); | |
372 Push(src3, src4, cond); | |
373 } | |
374 } else { | |
375 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | |
376 Push(src2, src3, src4, cond); | |
377 } | |
378 } | 281 } |
379 | 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(src1, MemOperand(sp, -kPointerSize)); |
| 287 StorePU(src2, MemOperand(sp, -kPointerSize)); |
| 288 StorePU(src3, MemOperand(sp, -kPointerSize)); |
| 289 StorePU(src4, MemOperand(sp, -kPointerSize)); |
| 290 StorePU(src5, MemOperand(sp, -kPointerSize)); |
| 291 } |
| 292 |
| 293 void Pop(Register dst) { pop(dst); } |
| 294 |
380 // Pop two registers. Pops rightmost register first (from lower address). | 295 // Pop two registers. Pops rightmost register first (from lower address). |
381 void Pop(Register src1, Register src2, Condition cond = al) { | 296 void Pop(Register src1, Register src2) { |
382 DCHECK(!src1.is(src2)); | 297 LoadP(src2, MemOperand(sp, 0)); |
383 if (src1.code() > src2.code()) { | 298 LoadP(src1, MemOperand(sp, kPointerSize)); |
384 ldm(ia_w, sp, src1.bit() | src2.bit(), cond); | 299 addi(sp, sp, Operand(2 * kPointerSize)); |
385 } else { | |
386 ldr(src2, MemOperand(sp, 4, PostIndex), cond); | |
387 ldr(src1, MemOperand(sp, 4, PostIndex), cond); | |
388 } | |
389 } | 300 } |
390 | 301 |
391 // Pop three registers. Pops rightmost register first (from lower address). | 302 // Pop three registers. Pops rightmost register first (from lower address). |
392 void Pop(Register src1, Register src2, Register src3, Condition cond = al) { | 303 void Pop(Register src1, Register src2, Register src3) { |
393 DCHECK(!src1.is(src2)); | 304 LoadP(src3, MemOperand(sp, 0)); |
394 DCHECK(!src2.is(src3)); | 305 LoadP(src2, MemOperand(sp, kPointerSize)); |
395 DCHECK(!src1.is(src3)); | 306 LoadP(src1, MemOperand(sp, 2 * kPointerSize)); |
396 if (src1.code() > src2.code()) { | 307 addi(sp, sp, Operand(3 * kPointerSize)); |
397 if (src2.code() > src3.code()) { | |
398 ldm(ia_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
399 } else { | |
400 ldr(src3, MemOperand(sp, 4, PostIndex), cond); | |
401 ldm(ia_w, sp, src1.bit() | src2.bit(), cond); | |
402 } | |
403 } else { | |
404 Pop(src2, src3, cond); | |
405 ldr(src1, MemOperand(sp, 4, PostIndex), cond); | |
406 } | |
407 } | 308 } |
408 | 309 |
409 // Pop four registers. Pops rightmost register first (from lower address). | 310 // Pop four registers. Pops rightmost register first (from lower address). |
410 void Pop(Register src1, | 311 void Pop(Register src1, Register src2, Register src3, Register src4) { |
411 Register src2, | 312 LoadP(src4, MemOperand(sp, 0)); |
412 Register src3, | 313 LoadP(src3, MemOperand(sp, kPointerSize)); |
413 Register src4, | 314 LoadP(src2, MemOperand(sp, 2 * kPointerSize)); |
414 Condition cond = al) { | 315 LoadP(src1, MemOperand(sp, 3 * kPointerSize)); |
415 DCHECK(!src1.is(src2)); | 316 addi(sp, sp, Operand(4 * kPointerSize)); |
416 DCHECK(!src2.is(src3)); | |
417 DCHECK(!src1.is(src3)); | |
418 DCHECK(!src1.is(src4)); | |
419 DCHECK(!src2.is(src4)); | |
420 DCHECK(!src3.is(src4)); | |
421 if (src1.code() > src2.code()) { | |
422 if (src2.code() > src3.code()) { | |
423 if (src3.code() > src4.code()) { | |
424 ldm(ia_w, | |
425 sp, | |
426 src1.bit() | src2.bit() | src3.bit() | src4.bit(), | |
427 cond); | |
428 } else { | |
429 ldr(src4, MemOperand(sp, 4, PostIndex), cond); | |
430 ldm(ia_w, sp, src1.bit() | src2.bit() | src3.bit(), cond); | |
431 } | |
432 } else { | |
433 Pop(src3, src4, cond); | |
434 ldm(ia_w, sp, src1.bit() | src2.bit(), cond); | |
435 } | |
436 } else { | |
437 Pop(src2, src3, src4, cond); | |
438 ldr(src1, MemOperand(sp, 4, PostIndex), cond); | |
439 } | |
440 } | 317 } |
441 | 318 |
442 // Push a fixed frame, consisting of lr, fp, constant pool (if | 319 // Pop five registers. Pops rightmost register first (from lower address). |
443 // FLAG_enable_ool_constant_pool), context and JS function / marker id if | 320 void Pop(Register src1, Register src2, Register src3, Register src4, |
444 // 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. |
445 void PushFixedFrame(Register marker_reg = no_reg); | 332 void PushFixedFrame(Register marker_reg = no_reg); |
446 void PopFixedFrame(Register marker_reg = no_reg); | 333 void PopFixedFrame(Register marker_reg = no_reg); |
447 | 334 |
448 // 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 |
449 // RegList constant kSafepointSavedRegisters. | 336 // RegList constant kSafepointSavedRegisters. |
450 void PushSafepointRegisters(); | 337 void PushSafepointRegisters(); |
451 void PopSafepointRegisters(); | 338 void PopSafepointRegisters(); |
452 // Store value in register src in the safepoint stack slot for | 339 // Store value in register src in the safepoint stack slot for |
453 // register dst. | 340 // register dst. |
454 void StoreToSafepointRegisterSlot(Register src, Register dst); | 341 void StoreToSafepointRegisterSlot(Register src, Register dst); |
455 // 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 |
456 // into register dst. | 343 // into register dst. |
457 void LoadFromSafepointRegisterSlot(Register dst, Register src); | 344 void LoadFromSafepointRegisterSlot(Register dst, Register src); |
458 | 345 |
459 // Load two consecutive registers with two consecutive memory locations. | 346 // Flush the I-cache from asm code. You should use CpuFeatures::FlushICache |
460 void Ldrd(Register dst1, | 347 // from C. |
461 Register dst2, | 348 // Does not handle errors. |
462 const MemOperand& src, | 349 void FlushICache(Register address, size_t size, Register scratch); |
463 Condition cond = al); | |
464 | |
465 // Store two consecutive registers to two consecutive memory locations. | |
466 void Strd(Register src1, | |
467 Register src2, | |
468 const MemOperand& dst, | |
469 Condition cond = al); | |
470 | |
471 // Ensure that FPSCR contains values needed by JavaScript. | |
472 // We need the NaNModeControlBit to be sure that operations like | |
473 // vadd and vsub generate the Canonical NaN (if a NaN must be generated). | |
474 // In VFP3 it will be always the Canonical NaN. | |
475 // In VFP2 it will be either the Canonical NaN or the negative version | |
476 // of the Canonical NaN. It doesn't matter if we have two values. The aim | |
477 // is to be sure to never generate the hole NaN. | |
478 void VFPEnsureFPSCRState(Register scratch); | |
479 | 350 |
480 // 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. |
481 void VFPCanonicalizeNaN(const DwVfpRegister dst, | 352 void CanonicalizeNaN(const DoubleRegister dst, const DoubleRegister src); |
482 const DwVfpRegister src, | 353 void CanonicalizeNaN(const DoubleRegister value) { |
483 const Condition cond = al); | 354 CanonicalizeNaN(value, value); |
484 void VFPCanonicalizeNaN(const DwVfpRegister value, | |
485 const Condition cond = al) { | |
486 VFPCanonicalizeNaN(value, value, cond); | |
487 } | 355 } |
488 | 356 |
489 // Compare double values and move the result to the normal condition flags. | 357 // Converts the integer (untagged smi) in |src| to a double, storing |
490 void VFPCompareAndSetFlags(const DwVfpRegister src1, | 358 // the result to |double_dst| |
491 const DwVfpRegister src2, | 359 void ConvertIntToDouble(Register src, DoubleRegister double_dst); |
492 const Condition cond = al); | |
493 void VFPCompareAndSetFlags(const DwVfpRegister src1, | |
494 const double src2, | |
495 const Condition cond = al); | |
496 | 360 |
497 // Compare double values and then load the fpscr flags to a register. | 361 // Converts the unsigned integer (untagged smi) in |src| to |
498 void VFPCompareAndLoadFlags(const DwVfpRegister src1, | 362 // a double, storing the result to |double_dst| |
499 const DwVfpRegister src2, | 363 void ConvertUnsignedIntToDouble(Register src, DoubleRegister double_dst); |
500 const Register fpscr_flags, | |
501 const Condition cond = al); | |
502 void VFPCompareAndLoadFlags(const DwVfpRegister src1, | |
503 const double src2, | |
504 const Register fpscr_flags, | |
505 const Condition cond = al); | |
506 | 364 |
507 void Vmov(const DwVfpRegister dst, | 365 // Converts the integer (untagged smi) in |src| to |
508 const double imm, | 366 // a float, storing the result in |dst| |
509 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); |
510 | 370 |
511 void VmovHigh(Register dst, DwVfpRegister src); | 371 // Converts the double_input to an integer. Note that, upon return, |
512 void VmovHigh(DwVfpRegister dst, Register src); | 372 // the contents of double_dst will also hold the fixed point representation. |
513 void VmovLow(Register dst, DwVfpRegister src); | 373 void ConvertDoubleToInt64(const DoubleRegister double_input, |
514 void VmovLow(DwVfpRegister dst, Register src); | 374 #if !V8_TARGET_ARCH_PPC64 |
515 | 375 const Register dst_hi, |
516 // Loads the number from object into dst register. | 376 #endif |
517 // If |object| is neither smi nor heap number, |not_number| is jumped to | 377 const Register dst, const DoubleRegister double_dst, |
518 // with |object| still intact. | 378 FPRoundingMode rounding_mode = kRoundToZero); |
519 void LoadNumber(Register object, | |
520 LowDwVfpRegister dst, | |
521 Register heap_number_map, | |
522 Register scratch, | |
523 Label* not_number); | |
524 | |
525 // Loads the number from object into double_dst in the double format. | |
526 // Control will jump to not_int32 if the value cannot be exactly represented | |
527 // by a 32-bit integer. | |
528 // Floating point value in the 32-bit integer range that are not exact integer | |
529 // won't be loaded. | |
530 void LoadNumberAsInt32Double(Register object, | |
531 DwVfpRegister double_dst, | |
532 Register heap_number_map, | |
533 Register scratch, | |
534 LowDwVfpRegister double_scratch, | |
535 Label* not_int32); | |
536 | |
537 // Loads the number from object into dst as a 32-bit integer. | |
538 // Control will jump to not_int32 if the object cannot be exactly represented | |
539 // by a 32-bit integer. | |
540 // Floating point value in the 32-bit integer range that are not exact integer | |
541 // won't be converted. | |
542 void LoadNumberAsInt32(Register object, | |
543 Register dst, | |
544 Register heap_number_map, | |
545 Register scratch, | |
546 DwVfpRegister double_scratch0, | |
547 LowDwVfpRegister double_scratch1, | |
548 Label* not_int32); | |
549 | 379 |
550 // Generates function and stub prologue code. | 380 // Generates function and stub prologue code. |
551 void StubPrologue(); | 381 void StubPrologue(); |
552 void Prologue(bool code_pre_aging); | 382 void Prologue(bool code_pre_aging); |
553 | 383 |
554 // Enter exit frame. | 384 // Enter exit frame. |
555 // 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. |
556 void EnterExitFrame(bool save_doubles, int stack_space = 0); | 386 void EnterExitFrame(bool save_doubles, int stack_space = 0); |
557 | 387 |
558 // Leave the current exit frame. Expects the return value in r0. | 388 // Leave the current exit frame. Expects the return value in r0. |
559 // 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 |
560 // 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). |
561 void LeaveExitFrame(bool save_doubles, | 391 void LeaveExitFrame(bool save_doubles, Register argument_count, |
562 Register argument_count, | |
563 bool restore_context); | 392 bool restore_context); |
564 | 393 |
565 // Get the actual activation frame alignment for target environment. | 394 // Get the actual activation frame alignment for target environment. |
566 static int ActivationFrameAlignment(); | 395 static int ActivationFrameAlignment(); |
567 | 396 |
568 void LoadContext(Register dst, int context_chain_length); | 397 void LoadContext(Register dst, int context_chain_length); |
569 | 398 |
570 // Conditionally load the cached Array transitioned map of type | 399 // Conditionally load the cached Array transitioned map of type |
571 // transitioned_kind from the native context if the map in register | 400 // transitioned_kind from the native context if the map in register |
572 // 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 |
573 // expected_kind. | 402 // expected_kind. |
574 void LoadTransitionedArrayMapConditional( | 403 void LoadTransitionedArrayMapConditional(ElementsKind expected_kind, |
575 ElementsKind expected_kind, | 404 ElementsKind transitioned_kind, |
576 ElementsKind transitioned_kind, | 405 Register map_in_out, |
577 Register map_in_out, | 406 Register scratch, |
578 Register scratch, | 407 Label* no_map_match); |
579 Label* no_map_match); | |
580 | 408 |
581 void LoadGlobalFunction(int index, Register function); | 409 void LoadGlobalFunction(int index, Register function); |
582 | 410 |
583 // Load the initial map from the global function. The registers | 411 // Load the initial map from the global function. The registers |
584 // function and map can be the same, function is then overwritten. | 412 // function and map can be the same, function is then overwritten. |
585 void LoadGlobalFunctionInitialMap(Register function, | 413 void LoadGlobalFunctionInitialMap(Register function, Register map, |
586 Register map, | |
587 Register scratch); | 414 Register scratch); |
588 | 415 |
589 void InitializeRootRegister() { | 416 void InitializeRootRegister() { |
590 ExternalReference roots_array_start = | 417 ExternalReference roots_array_start = |
591 ExternalReference::roots_array_start(isolate()); | 418 ExternalReference::roots_array_start(isolate()); |
592 mov(kRootRegister, Operand(roots_array_start)); | 419 mov(kRootRegister, Operand(roots_array_start)); |
593 } | 420 } |
594 | 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 bool updateForm = false); |
| 437 |
| 438 void LoadWordArith(Register dst, const MemOperand& mem, |
| 439 Register scratch = no_reg); |
| 440 |
| 441 void StoreWord(Register src, const MemOperand& mem, Register scratch, |
| 442 bool updateForm = false); |
| 443 |
| 444 void LoadHalfWord(Register dst, const MemOperand& mem, Register scratch, |
| 445 bool updateForm = false); |
| 446 |
| 447 void StoreHalfWord(Register src, const MemOperand& mem, Register scratch, |
| 448 bool updateForm = false); |
| 449 |
| 450 void LoadByte(Register dst, const MemOperand& mem, Register scratch, |
| 451 bool updateForm = false); |
| 452 |
| 453 void StoreByte(Register src, const MemOperand& mem, Register scratch, |
| 454 bool updateForm = false); |
| 455 |
| 456 void LoadRepresentation(Register dst, const MemOperand& mem, Representation r, |
| 457 Register scratch = no_reg); |
| 458 |
| 459 void StoreRepresentation(Register src, const MemOperand& mem, |
| 460 Representation r, Register scratch = no_reg); |
| 461 |
| 462 // Move values between integer and floating point registers. |
| 463 void MovIntToDouble(DoubleRegister dst, Register src, Register scratch); |
| 464 void MovUnsignedIntToDouble(DoubleRegister dst, Register src, |
| 465 Register scratch); |
| 466 void MovInt64ToDouble(DoubleRegister dst, |
| 467 #if !V8_TARGET_ARCH_PPC64 |
| 468 Register src_hi, |
| 469 #endif |
| 470 Register src); |
| 471 #if V8_TARGET_ARCH_PPC64 |
| 472 void MovInt64ComponentsToDouble(DoubleRegister dst, Register src_hi, |
| 473 Register src_lo, Register scratch); |
| 474 #endif |
| 475 void MovDoubleLowToInt(Register dst, DoubleRegister src); |
| 476 void MovDoubleHighToInt(Register dst, DoubleRegister src); |
| 477 void MovDoubleToInt64( |
| 478 #if !V8_TARGET_ARCH_PPC64 |
| 479 Register dst_hi, |
| 480 #endif |
| 481 Register dst, DoubleRegister src); |
| 482 |
| 483 void Add(Register dst, Register src, intptr_t value, Register scratch); |
| 484 void Cmpi(Register src1, const Operand& src2, Register scratch, |
| 485 CRegister cr = cr7); |
| 486 void Cmpli(Register src1, const Operand& src2, Register scratch, |
| 487 CRegister cr = cr7); |
| 488 void Cmpwi(Register src1, const Operand& src2, Register scratch, |
| 489 CRegister cr = cr7); |
| 490 void Cmplwi(Register src1, const Operand& src2, Register scratch, |
| 491 CRegister cr = cr7); |
| 492 void And(Register ra, Register rs, const Operand& rb, RCBit rc = LeaveRC); |
| 493 void Or(Register ra, Register rs, const Operand& rb, RCBit rc = LeaveRC); |
| 494 void Xor(Register ra, Register rs, const Operand& rb, RCBit rc = LeaveRC); |
| 495 |
| 496 void AddSmiLiteral(Register dst, Register src, Smi* smi, Register scratch); |
| 497 void SubSmiLiteral(Register dst, Register src, Smi* smi, Register scratch); |
| 498 void CmpSmiLiteral(Register src1, Smi* smi, Register scratch, |
| 499 CRegister cr = cr7); |
| 500 void CmplSmiLiteral(Register src1, Smi* smi, Register scratch, |
| 501 CRegister cr = cr7); |
| 502 void AndSmiLiteral(Register dst, Register src, Smi* smi, Register scratch, |
| 503 RCBit rc = LeaveRC); |
| 504 |
| 505 // Set new rounding mode RN to FPSCR |
| 506 void SetRoundingMode(FPRoundingMode RN); |
| 507 |
| 508 // reset rounding mode to default (kRoundToNearest) |
| 509 void ResetRoundingMode(); |
| 510 |
| 511 // These exist to provide portability between 32 and 64bit |
| 512 void LoadP(Register dst, const MemOperand& mem, Register scratch = no_reg); |
| 513 void StoreP(Register src, const MemOperand& mem, Register scratch = no_reg); |
| 514 |
595 // --------------------------------------------------------------------------- | 515 // --------------------------------------------------------------------------- |
596 // JavaScript invokes | 516 // JavaScript invokes |
597 | 517 |
598 // Invoke the JavaScript function code by either calling or jumping. | 518 // Invoke the JavaScript function code by either calling or jumping. |
599 void InvokeCode(Register code, | 519 void InvokeCode(Register code, const ParameterCount& expected, |
600 const ParameterCount& expected, | 520 const ParameterCount& actual, InvokeFlag flag, |
601 const ParameterCount& actual, | |
602 InvokeFlag flag, | |
603 const CallWrapper& call_wrapper); | 521 const CallWrapper& call_wrapper); |
604 | 522 |
605 // Invoke the JavaScript function in the given register. Changes the | 523 // Invoke the JavaScript function in the given register. Changes the |
606 // current context to the context in the function before invoking. | 524 // current context to the context in the function before invoking. |
607 void InvokeFunction(Register function, | 525 void InvokeFunction(Register function, const ParameterCount& actual, |
608 const ParameterCount& actual, | 526 InvokeFlag flag, const CallWrapper& call_wrapper); |
609 InvokeFlag flag, | |
610 const CallWrapper& call_wrapper); | |
611 | 527 |
612 void InvokeFunction(Register function, | 528 void InvokeFunction(Register function, const ParameterCount& expected, |
613 const ParameterCount& expected, | 529 const ParameterCount& actual, InvokeFlag flag, |
614 const ParameterCount& actual, | |
615 InvokeFlag flag, | |
616 const CallWrapper& call_wrapper); | 530 const CallWrapper& call_wrapper); |
617 | 531 |
618 void InvokeFunction(Handle<JSFunction> function, | 532 void InvokeFunction(Handle<JSFunction> function, |
619 const ParameterCount& expected, | 533 const ParameterCount& expected, |
620 const ParameterCount& actual, | 534 const ParameterCount& actual, InvokeFlag flag, |
621 InvokeFlag flag, | |
622 const CallWrapper& call_wrapper); | 535 const CallWrapper& call_wrapper); |
623 | 536 |
624 void IsObjectJSObjectType(Register heap_object, | 537 void IsObjectJSObjectType(Register heap_object, Register map, |
625 Register map, | 538 Register scratch, Label* fail); |
626 Register scratch, | |
627 Label* fail); | |
628 | 539 |
629 void IsInstanceJSObjectType(Register map, | 540 void IsInstanceJSObjectType(Register map, Register scratch, Label* fail); |
630 Register scratch, | |
631 Label* fail); | |
632 | 541 |
633 void IsObjectJSStringType(Register object, | 542 void IsObjectJSStringType(Register object, Register scratch, Label* fail); |
634 Register scratch, | |
635 Label* fail); | |
636 | 543 |
637 void IsObjectNameType(Register object, | 544 void IsObjectNameType(Register object, Register scratch, Label* fail); |
638 Register scratch, | |
639 Label* fail); | |
640 | 545 |
641 // --------------------------------------------------------------------------- | 546 // --------------------------------------------------------------------------- |
642 // Debugger Support | 547 // Debugger Support |
643 | 548 |
644 void DebugBreak(); | 549 void DebugBreak(); |
645 | 550 |
646 // --------------------------------------------------------------------------- | 551 // --------------------------------------------------------------------------- |
647 // Exception handling | 552 // Exception handling |
648 | 553 |
649 // Push a new try handler and link into try handler chain. | 554 // Push a new try handler and link into try handler chain. |
650 void PushTryHandler(StackHandler::Kind kind, int handler_index); | 555 void PushTryHandler(StackHandler::Kind kind, int handler_index); |
651 | 556 |
652 // Unlink the stack handler on top of the stack from the try handler chain. | 557 // Unlink the stack handler on top of the stack from the try handler chain. |
653 // Must preserve the result register. | 558 // Must preserve the result register. |
654 void PopTryHandler(); | 559 void PopTryHandler(); |
655 | 560 |
656 // Passes thrown value to the handler of top of the try handler chain. | 561 // Passes thrown value to the handler of top of the try handler chain. |
657 void Throw(Register value); | 562 void Throw(Register value); |
658 | 563 |
659 // Propagates an uncatchable exception to the top of the current JS stack's | 564 // Propagates an uncatchable exception to the top of the current JS stack's |
660 // handler chain. | 565 // handler chain. |
661 void ThrowUncatchable(Register value); | 566 void ThrowUncatchable(Register value); |
662 | 567 |
663 // --------------------------------------------------------------------------- | 568 // --------------------------------------------------------------------------- |
664 // Inline caching support | 569 // Inline caching support |
665 | 570 |
666 // Generate code for checking access rights - used for security checks | 571 // Generate code for checking access rights - used for security checks |
667 // on access to global objects across environments. The holder register | 572 // on access to global objects across environments. The holder register |
668 // is left untouched, whereas both scratch registers are clobbered. | 573 // is left untouched, whereas both scratch registers are clobbered. |
669 void CheckAccessGlobalProxy(Register holder_reg, | 574 void CheckAccessGlobalProxy(Register holder_reg, Register scratch, |
670 Register scratch, | |
671 Label* miss); | 575 Label* miss); |
672 | 576 |
673 void GetNumberHash(Register t0, Register scratch); | 577 void GetNumberHash(Register t0, Register scratch); |
674 | 578 |
675 void LoadFromNumberDictionary(Label* miss, | 579 void LoadFromNumberDictionary(Label* miss, Register elements, Register key, |
676 Register elements, | 580 Register result, Register t0, Register t1, |
677 Register key, | |
678 Register result, | |
679 Register t0, | |
680 Register t1, | |
681 Register t2); | 581 Register t2); |
682 | 582 |
683 | 583 |
684 inline void MarkCode(NopMarkerTypes type) { | 584 inline void MarkCode(NopMarkerTypes type) { nop(type); } |
685 nop(type); | |
686 } | |
687 | 585 |
688 // Check if the given instruction is a 'type' marker. | 586 // Check if the given instruction is a 'type' marker. |
689 // i.e. check if is is a mov r<type>, r<type> (referenced as nop(type)) | 587 // i.e. check if is is a mov r<type>, r<type> (referenced as nop(type)) |
690 // These instructions are generated to mark special location in the code, | 588 // These instructions are generated to mark special location in the code, |
691 // like some special IC code. | 589 // like some special IC code. |
692 static inline bool IsMarkedCode(Instr instr, int type) { | 590 static inline bool IsMarkedCode(Instr instr, int type) { |
693 DCHECK((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER)); | 591 DCHECK((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER)); |
694 return IsNop(instr, type); | 592 return IsNop(instr, type); |
695 } | 593 } |
696 | 594 |
697 | 595 |
698 static inline int GetCodeMarker(Instr instr) { | 596 static inline int GetCodeMarker(Instr instr) { |
699 int dst_reg_offset = 12; | 597 int dst_reg_offset = 12; |
700 int dst_mask = 0xf << dst_reg_offset; | 598 int dst_mask = 0xf << dst_reg_offset; |
701 int src_mask = 0xf; | 599 int src_mask = 0xf; |
702 int dst_reg = (instr & dst_mask) >> dst_reg_offset; | 600 int dst_reg = (instr & dst_mask) >> dst_reg_offset; |
703 int src_reg = instr & src_mask; | 601 int src_reg = instr & src_mask; |
704 uint32_t non_register_mask = ~(dst_mask | src_mask); | 602 uint32_t non_register_mask = ~(dst_mask | src_mask); |
705 uint32_t mov_mask = al | 13 << 21; | 603 uint32_t mov_mask = al | 13 << 21; |
706 | 604 |
707 // Return <n> if we have a mov rn rn, else return -1. | 605 // Return <n> if we have a mov rn rn, else return -1. |
708 int type = ((instr & non_register_mask) == mov_mask) && | 606 int type = ((instr & non_register_mask) == mov_mask) && |
709 (dst_reg == src_reg) && | 607 (dst_reg == src_reg) && (FIRST_IC_MARKER <= dst_reg) && |
710 (FIRST_IC_MARKER <= dst_reg) && (dst_reg < LAST_CODE_MARKER) | 608 (dst_reg < LAST_CODE_MARKER) |
711 ? src_reg | 609 ? src_reg |
712 : -1; | 610 : -1; |
713 DCHECK((type == -1) || | 611 DCHECK((type == -1) || |
714 ((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER))); | 612 ((FIRST_IC_MARKER <= type) && (type < LAST_CODE_MARKER))); |
715 return type; | 613 return type; |
716 } | 614 } |
717 | 615 |
718 | 616 |
719 // --------------------------------------------------------------------------- | 617 // --------------------------------------------------------------------------- |
720 // Allocation support | 618 // Allocation support |
721 | 619 |
722 // Allocate an object in new space or old pointer space. The object_size is | 620 // Allocate an object in new space or old pointer space. The object_size is |
723 // specified either in bytes or in words if the allocation flag SIZE_IN_WORDS | 621 // specified either in bytes or in words if the allocation flag SIZE_IN_WORDS |
724 // is passed. If the space is exhausted control continues at the gc_required | 622 // is passed. If the space is exhausted control continues at the gc_required |
725 // label. The allocated object is returned in result. If the flag | 623 // label. The allocated object is returned in result. If the flag |
726 // tag_allocated_object is true the result is tagged as as a heap object. | 624 // tag_allocated_object is true the result is tagged as as a heap object. |
727 // All registers are clobbered also when control continues at the gc_required | 625 // All registers are clobbered also when control continues at the gc_required |
728 // label. | 626 // label. |
729 void Allocate(int object_size, | 627 void Allocate(int object_size, Register result, Register scratch1, |
730 Register result, | 628 Register scratch2, Label* gc_required, AllocationFlags flags); |
731 Register scratch1, | |
732 Register scratch2, | |
733 Label* gc_required, | |
734 AllocationFlags flags); | |
735 | 629 |
736 void Allocate(Register object_size, | 630 void Allocate(Register object_size, Register result, Register scratch1, |
737 Register result, | 631 Register scratch2, Label* gc_required, AllocationFlags flags); |
738 Register scratch1, | |
739 Register scratch2, | |
740 Label* gc_required, | |
741 AllocationFlags flags); | |
742 | 632 |
743 // Undo allocation in new space. The object passed and objects allocated after | 633 // Undo allocation in new space. The object passed and objects allocated after |
744 // it will no longer be allocated. The caller must make sure that no pointers | 634 // it will no longer be allocated. The caller must make sure that no pointers |
745 // are left to the object(s) no longer allocated as they would be invalid when | 635 // are left to the object(s) no longer allocated as they would be invalid when |
746 // allocation is undone. | 636 // allocation is undone. |
747 void UndoAllocationInNewSpace(Register object, Register scratch); | 637 void UndoAllocationInNewSpace(Register object, Register scratch); |
748 | 638 |
749 | 639 |
750 void AllocateTwoByteString(Register result, | 640 void AllocateTwoByteString(Register result, Register length, |
751 Register length, | 641 Register scratch1, Register scratch2, |
752 Register scratch1, | 642 Register scratch3, Label* gc_required); |
753 Register scratch2, | 643 void AllocateAsciiString(Register result, Register length, Register scratch1, |
754 Register scratch3, | 644 Register scratch2, Register scratch3, |
755 Label* gc_required); | |
756 void AllocateAsciiString(Register result, | |
757 Register length, | |
758 Register scratch1, | |
759 Register scratch2, | |
760 Register scratch3, | |
761 Label* gc_required); | 645 Label* gc_required); |
762 void AllocateTwoByteConsString(Register result, | 646 void AllocateTwoByteConsString(Register result, Register length, |
763 Register length, | 647 Register scratch1, Register scratch2, |
764 Register scratch1, | |
765 Register scratch2, | |
766 Label* gc_required); | 648 Label* gc_required); |
767 void AllocateAsciiConsString(Register result, | 649 void AllocateAsciiConsString(Register result, Register length, |
768 Register length, | 650 Register scratch1, Register scratch2, |
769 Register scratch1, | |
770 Register scratch2, | |
771 Label* gc_required); | 651 Label* gc_required); |
772 void AllocateTwoByteSlicedString(Register result, | 652 void AllocateTwoByteSlicedString(Register result, Register length, |
773 Register length, | 653 Register scratch1, Register scratch2, |
774 Register scratch1, | |
775 Register scratch2, | |
776 Label* gc_required); | 654 Label* gc_required); |
777 void AllocateAsciiSlicedString(Register result, | 655 void AllocateAsciiSlicedString(Register result, Register length, |
778 Register length, | 656 Register scratch1, Register scratch2, |
779 Register scratch1, | |
780 Register scratch2, | |
781 Label* gc_required); | 657 Label* gc_required); |
782 | 658 |
783 // Allocates a heap number or jumps to the gc_required label if the young | 659 // Allocates a heap number or jumps to the gc_required label if the young |
784 // space is full and a scavenge is needed. All registers are clobbered also | 660 // space is full and a scavenge is needed. All registers are clobbered also |
785 // when control continues at the gc_required label. | 661 // when control continues at the gc_required label. |
786 void AllocateHeapNumber(Register result, | 662 void AllocateHeapNumber(Register result, Register scratch1, Register scratch2, |
787 Register scratch1, | 663 Register heap_number_map, Label* gc_required, |
788 Register scratch2, | |
789 Register heap_number_map, | |
790 Label* gc_required, | |
791 TaggingMode tagging_mode = TAG_RESULT, | 664 TaggingMode tagging_mode = TAG_RESULT, |
792 MutableMode mode = IMMUTABLE); | 665 MutableMode mode = IMMUTABLE); |
793 void AllocateHeapNumberWithValue(Register result, | 666 void AllocateHeapNumberWithValue(Register result, DoubleRegister value, |
794 DwVfpRegister value, | 667 Register scratch1, Register scratch2, |
795 Register scratch1, | |
796 Register scratch2, | |
797 Register heap_number_map, | 668 Register heap_number_map, |
798 Label* gc_required); | 669 Label* gc_required); |
799 | 670 |
800 // Copies a fixed number of fields of heap objects from src to dst. | 671 // Copies a fixed number of fields of heap objects from src to dst. |
801 void CopyFields(Register dst, | 672 void CopyFields(Register dst, Register src, RegList temps, int field_count); |
802 Register src, | |
803 LowDwVfpRegister double_scratch, | |
804 int field_count); | |
805 | 673 |
806 // Copies a number of bytes from src to dst. All registers are clobbered. On | 674 // Copies a number of bytes from src to dst. All registers are clobbered. On |
807 // exit src and dst will point to the place just after where the last byte was | 675 // exit src and dst will point to the place just after where the last byte was |
808 // read or written and length will be zero. | 676 // read or written and length will be zero. |
809 void CopyBytes(Register src, | 677 void CopyBytes(Register src, Register dst, Register length, Register scratch); |
810 Register dst, | 678 |
811 Register length, | 679 // Initialize fields with filler values. |count| fields starting at |
812 Register scratch); | 680 // |start_offset| are overwritten with the value in |filler|. At the end the |
| 681 // loop, |start_offset| points at the next uninitialized field. |count| is |
| 682 // assumed to be non-zero. |
| 683 void InitializeNFieldsWithFiller(Register start_offset, Register count, |
| 684 Register filler); |
813 | 685 |
814 // Initialize fields with filler values. Fields starting at |start_offset| | 686 // Initialize fields with filler values. Fields starting at |start_offset| |
815 // not including end_offset are overwritten with the value in |filler|. At | 687 // not including end_offset are overwritten with the value in |filler|. At |
816 // the end the loop, |start_offset| takes the value of |end_offset|. | 688 // the end the loop, |start_offset| takes the value of |end_offset|. |
817 void InitializeFieldsWithFiller(Register start_offset, | 689 void InitializeFieldsWithFiller(Register start_offset, Register end_offset, |
818 Register end_offset, | |
819 Register filler); | 690 Register filler); |
820 | 691 |
821 // --------------------------------------------------------------------------- | 692 // --------------------------------------------------------------------------- |
822 // Support functions. | 693 // Support functions. |
823 | 694 |
824 // Try to get function prototype of a function and puts the value in | 695 // Try to get function prototype of a function and puts the value in |
825 // the result register. Checks that the function really is a | 696 // the result register. Checks that the function really is a |
826 // function and jumps to the miss label if the fast checks fail. The | 697 // function and jumps to the miss label if the fast checks fail. The |
827 // function register will be untouched; the other registers may be | 698 // function register will be untouched; the other registers may be |
828 // clobbered. | 699 // clobbered. |
829 void TryGetFunctionPrototype(Register function, | 700 void TryGetFunctionPrototype(Register function, Register result, |
830 Register result, | 701 Register scratch, Label* miss, |
831 Register scratch, | |
832 Label* miss, | |
833 bool miss_on_bound_function = false); | 702 bool miss_on_bound_function = false); |
834 | 703 |
835 // Compare object type for heap object. heap_object contains a non-Smi | 704 // Compare object type for heap object. heap_object contains a non-Smi |
836 // whose object type should be compared with the given type. This both | 705 // whose object type should be compared with the given type. This both |
837 // sets the flags and leaves the object type in the type_reg register. | 706 // sets the flags and leaves the object type in the type_reg register. |
838 // It leaves the map in the map register (unless the type_reg and map register | 707 // It leaves the map in the map register (unless the type_reg and map register |
839 // are the same register). It leaves the heap object in the heap_object | 708 // are the same register). It leaves the heap object in the heap_object |
840 // register unless the heap_object register is the same register as one of the | 709 // register unless the heap_object register is the same register as one of the |
841 // other registers. | 710 // other registers. |
842 // Type_reg can be no_reg. In that case ip is used. | 711 // Type_reg can be no_reg. In that case ip is used. |
843 void CompareObjectType(Register heap_object, | 712 void CompareObjectType(Register heap_object, Register map, Register type_reg, |
844 Register map, | |
845 Register type_reg, | |
846 InstanceType type); | 713 InstanceType type); |
847 | 714 |
848 // Compare object type for heap object. Branch to false_label if type | 715 // Compare object type for heap object. Branch to false_label if type |
849 // is lower than min_type or greater than max_type. | 716 // is lower than min_type or greater than max_type. |
850 // Load map into the register map. | 717 // Load map into the register map. |
851 void CheckObjectTypeRange(Register heap_object, | 718 void CheckObjectTypeRange(Register heap_object, Register map, |
852 Register map, | 719 InstanceType min_type, InstanceType max_type, |
853 InstanceType min_type, | |
854 InstanceType max_type, | |
855 Label* false_label); | 720 Label* false_label); |
856 | 721 |
857 // Compare instance type in a map. map contains a valid map object whose | 722 // Compare instance type in a map. map contains a valid map object whose |
858 // object type should be compared with the given type. This both | 723 // object type should be compared with the given type. This both |
859 // sets the flags and leaves the object type in the type_reg register. | 724 // sets the flags and leaves the object type in the type_reg register. |
860 void CompareInstanceType(Register map, | 725 void CompareInstanceType(Register map, Register type_reg, InstanceType type); |
861 Register type_reg, | |
862 InstanceType type); | |
863 | 726 |
864 | 727 |
865 // Check if a map for a JSObject indicates that the object has fast elements. | 728 // Check if a map for a JSObject indicates that the object has fast elements. |
866 // Jump to the specified label if it does not. | 729 // Jump to the specified label if it does not. |
867 void CheckFastElements(Register map, | 730 void CheckFastElements(Register map, Register scratch, Label* fail); |
868 Register scratch, | |
869 Label* fail); | |
870 | 731 |
871 // Check if a map for a JSObject indicates that the object can have both smi | 732 // Check if a map for a JSObject indicates that the object can have both smi |
872 // and HeapObject elements. Jump to the specified label if it does not. | 733 // and HeapObject elements. Jump to the specified label if it does not. |
873 void CheckFastObjectElements(Register map, | 734 void CheckFastObjectElements(Register map, Register scratch, Label* fail); |
874 Register scratch, | |
875 Label* fail); | |
876 | 735 |
877 // Check if a map for a JSObject indicates that the object has fast smi only | 736 // Check if a map for a JSObject indicates that the object has fast smi only |
878 // elements. Jump to the specified label if it does not. | 737 // elements. Jump to the specified label if it does not. |
879 void CheckFastSmiElements(Register map, | 738 void CheckFastSmiElements(Register map, Register scratch, Label* fail); |
880 Register scratch, | |
881 Label* fail); | |
882 | 739 |
883 // Check to see if maybe_number can be stored as a double in | 740 // Check to see if maybe_number can be stored as a double in |
884 // FastDoubleElements. If it can, store it at the index specified by key in | 741 // FastDoubleElements. If it can, store it at the index specified by key in |
885 // the FastDoubleElements array elements. Otherwise jump to fail. | 742 // the FastDoubleElements array elements. Otherwise jump to fail. |
886 void StoreNumberToDoubleElements(Register value_reg, | 743 void StoreNumberToDoubleElements(Register value_reg, Register key_reg, |
887 Register key_reg, | 744 Register elements_reg, Register scratch1, |
888 Register elements_reg, | 745 DoubleRegister double_scratch, Label* fail, |
889 Register scratch1, | |
890 LowDwVfpRegister double_scratch, | |
891 Label* fail, | |
892 int elements_offset = 0); | 746 int elements_offset = 0); |
893 | 747 |
894 // Compare an object's map with the specified map and its transitioned | 748 // Compare an object's map with the specified map and its transitioned |
895 // elements maps if mode is ALLOW_ELEMENT_TRANSITION_MAPS. Condition flags are | 749 // elements maps if mode is ALLOW_ELEMENT_TRANSITION_MAPS. Condition flags are |
896 // set with result of map compare. If multiple map compares are required, the | 750 // set with result of map compare. If multiple map compares are required, the |
897 // compare sequences branches to early_success. | 751 // compare sequences branches to early_success. |
898 void CompareMap(Register obj, | 752 void CompareMap(Register obj, Register scratch, Handle<Map> map, |
899 Register scratch, | |
900 Handle<Map> map, | |
901 Label* early_success); | 753 Label* early_success); |
902 | 754 |
903 // As above, but the map of the object is already loaded into the register | 755 // As above, but the map of the object is already loaded into the register |
904 // which is preserved by the code generated. | 756 // which is preserved by the code generated. |
905 void CompareMap(Register obj_map, | 757 void CompareMap(Register obj_map, Handle<Map> map, Label* early_success); |
906 Handle<Map> map, | |
907 Label* early_success); | |
908 | 758 |
909 // Check if the map of an object is equal to a specified map and branch to | 759 // Check if the map of an object is equal to a specified map and branch to |
910 // label if not. Skip the smi check if not required (object is known to be a | 760 // label if not. Skip the smi check if not required (object is known to be a |
911 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match | 761 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match |
912 // against maps that are ElementsKind transition maps of the specified map. | 762 // against maps that are ElementsKind transition maps of the specified map. |
913 void CheckMap(Register obj, | 763 void CheckMap(Register obj, Register scratch, Handle<Map> map, Label* fail, |
914 Register scratch, | |
915 Handle<Map> map, | |
916 Label* fail, | |
917 SmiCheckType smi_check_type); | 764 SmiCheckType smi_check_type); |
918 | 765 |
919 | 766 |
920 void CheckMap(Register obj, | 767 void CheckMap(Register obj, Register scratch, Heap::RootListIndex index, |
921 Register scratch, | 768 Label* fail, SmiCheckType smi_check_type); |
922 Heap::RootListIndex index, | |
923 Label* fail, | |
924 SmiCheckType smi_check_type); | |
925 | 769 |
926 | 770 |
927 // Check if the map of an object is equal to a specified map and branch to a | 771 // Check if the map of an object is equal to a specified map and branch to a |
928 // specified target if equal. Skip the smi check if not required (object is | 772 // specified target if equal. Skip the smi check if not required (object is |
929 // known to be a heap object) | 773 // known to be a heap object) |
930 void DispatchMap(Register obj, | 774 void DispatchMap(Register obj, Register scratch, Handle<Map> map, |
931 Register scratch, | 775 Handle<Code> success, SmiCheckType smi_check_type); |
932 Handle<Map> map, | |
933 Handle<Code> success, | |
934 SmiCheckType smi_check_type); | |
935 | 776 |
936 | 777 |
937 // Compare the object in a register to a value from the root list. | 778 // Compare the object in a register to a value from the root list. |
938 // Uses the ip register as scratch. | 779 // Uses the ip register as scratch. |
939 void CompareRoot(Register obj, Heap::RootListIndex index); | 780 void CompareRoot(Register obj, Heap::RootListIndex index); |
940 | 781 |
941 | 782 |
942 // Load and check the instance type of an object for being a string. | 783 // Load and check the instance type of an object for being a string. |
943 // Loads the type into the second argument register. | 784 // Loads the type into the second argument register. |
944 // Returns a condition that will be enabled if the object was a string | 785 // Returns a condition that will be enabled if the object was a string. |
945 // and the passed-in condition passed. If the passed-in condition failed | 786 Condition IsObjectStringType(Register obj, Register type) { |
946 // then flags remain unchanged. | 787 LoadP(type, FieldMemOperand(obj, HeapObject::kMapOffset)); |
947 Condition IsObjectStringType(Register obj, | 788 lbz(type, FieldMemOperand(type, Map::kInstanceTypeOffset)); |
948 Register type, | 789 andi(r0, type, Operand(kIsNotStringMask)); |
949 Condition cond = al) { | |
950 ldr(type, FieldMemOperand(obj, HeapObject::kMapOffset), cond); | |
951 ldrb(type, FieldMemOperand(type, Map::kInstanceTypeOffset), cond); | |
952 tst(type, Operand(kIsNotStringMask), cond); | |
953 DCHECK_EQ(0, kStringTag); | 790 DCHECK_EQ(0, kStringTag); |
954 return eq; | 791 return eq; |
955 } | 792 } |
956 | 793 |
957 | 794 |
958 // Picks out an array index from the hash field. | 795 // Picks out an array index from the hash field. |
959 // Register use: | 796 // Register use: |
960 // hash - holds the index's hash. Clobbered. | 797 // hash - holds the index's hash. Clobbered. |
961 // index - holds the overwritten index on exit. | 798 // index - holds the overwritten index on exit. |
962 void IndexFromHash(Register hash, Register index); | 799 void IndexFromHash(Register hash, Register index); |
963 | 800 |
964 // Get the number of least significant bits from a register | 801 // Get the number of least significant bits from a register |
965 void GetLeastBitsFromSmi(Register dst, Register src, int num_least_bits); | 802 void GetLeastBitsFromSmi(Register dst, Register src, int num_least_bits); |
966 void GetLeastBitsFromInt32(Register dst, Register src, int mun_least_bits); | 803 void GetLeastBitsFromInt32(Register dst, Register src, int mun_least_bits); |
967 | 804 |
968 // Load the value of a smi object into a double register. | 805 // Load the value of a smi object into a double register. |
969 // The register value must be between d0 and d15. | 806 void SmiToDouble(DoubleRegister value, Register smi); |
970 void SmiToDouble(LowDwVfpRegister value, Register smi); | |
971 | 807 |
972 // Check if a double can be exactly represented as a signed 32-bit integer. | 808 // Check if a double can be exactly represented as a signed 32-bit integer. |
973 // Z flag set to one if true. | 809 // CR_EQ in cr7 is set if true. |
974 void TestDoubleIsInt32(DwVfpRegister double_input, | 810 void TestDoubleIsInt32(DoubleRegister double_input, Register scratch1, |
975 LowDwVfpRegister double_scratch); | 811 Register scratch2, DoubleRegister double_scratch); |
976 | 812 |
977 // Try to convert a double to a signed 32-bit integer. | 813 // Try to convert a double to a signed 32-bit integer. |
978 // Z flag set to one and result assigned if the conversion is exact. | 814 // CR_EQ in cr7 is set and result assigned if the conversion is exact. |
979 void TryDoubleToInt32Exact(Register result, | 815 void TryDoubleToInt32Exact(Register result, DoubleRegister double_input, |
980 DwVfpRegister double_input, | 816 Register scratch, DoubleRegister double_scratch); |
981 LowDwVfpRegister double_scratch); | |
982 | 817 |
983 // Floor a double and writes the value to the result register. | 818 // Floor a double and writes the value to the result register. |
984 // Go to exact if the conversion is exact (to be able to test -0), | 819 // Go to exact if the conversion is exact (to be able to test -0), |
985 // fall through calling code if an overflow occurred, else go to done. | 820 // fall through calling code if an overflow occurred, else go to done. |
986 // In return, input_high is loaded with high bits of input. | 821 // In return, input_high is loaded with high bits of input. |
987 void TryInt32Floor(Register result, | 822 void TryInt32Floor(Register result, DoubleRegister double_input, |
988 DwVfpRegister double_input, | 823 Register input_high, Register scratch, |
989 Register input_high, | 824 DoubleRegister double_scratch, Label* done, Label* exact); |
990 LowDwVfpRegister double_scratch, | |
991 Label* done, | |
992 Label* exact); | |
993 | 825 |
994 // Performs a truncating conversion of a floating point number as used by | 826 // Performs a truncating conversion of a floating point number as used by |
995 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. Goes to 'done' if it | 827 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. Goes to 'done' if it |
996 // succeeds, otherwise falls through if result is saturated. On return | 828 // succeeds, otherwise falls through if result is saturated. On return |
997 // 'result' either holds answer, or is clobbered on fall through. | 829 // 'result' either holds answer, or is clobbered on fall through. |
998 // | 830 // |
999 // Only public for the test code in test-code-stubs-arm.cc. | 831 // Only public for the test code in test-code-stubs-arm.cc. |
1000 void TryInlineTruncateDoubleToI(Register result, | 832 void TryInlineTruncateDoubleToI(Register result, DoubleRegister input, |
1001 DwVfpRegister input, | |
1002 Label* done); | 833 Label* done); |
1003 | 834 |
1004 // Performs a truncating conversion of a floating point number as used by | 835 // Performs a truncating conversion of a floating point number as used by |
1005 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. | 836 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. |
1006 // Exits with 'result' holding the answer. | 837 // Exits with 'result' holding the answer. |
1007 void TruncateDoubleToI(Register result, DwVfpRegister double_input); | 838 void TruncateDoubleToI(Register result, DoubleRegister double_input); |
1008 | 839 |
1009 // Performs a truncating conversion of a heap number as used by | 840 // Performs a truncating conversion of a heap number as used by |
1010 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. 'result' and 'input' | 841 // the JS bitwise operations. See ECMA-262 9.5: ToInt32. 'result' and 'input' |
1011 // must be different registers. Exits with 'result' holding the answer. | 842 // must be different registers. Exits with 'result' holding the answer. |
1012 void TruncateHeapNumberToI(Register result, Register object); | 843 void TruncateHeapNumberToI(Register result, Register object); |
1013 | 844 |
1014 // Converts the smi or heap number in object to an int32 using the rules | 845 // Converts the smi or heap number in object to an int32 using the rules |
1015 // for ToInt32 as described in ECMAScript 9.5.: the value is truncated | 846 // for ToInt32 as described in ECMAScript 9.5.: the value is truncated |
1016 // and brought into the range -2^31 .. +2^31 - 1. 'result' and 'input' must be | 847 // and brought into the range -2^31 .. +2^31 - 1. 'result' and 'input' must be |
1017 // different registers. | 848 // different registers. |
1018 void TruncateNumberToI(Register object, | 849 void TruncateNumberToI(Register object, Register result, |
1019 Register result, | 850 Register heap_number_map, Register scratch1, |
1020 Register heap_number_map, | |
1021 Register scratch1, | |
1022 Label* not_int32); | 851 Label* not_int32); |
1023 | 852 |
1024 // Check whether d16-d31 are available on the CPU. The result is given by the | 853 // Overflow handling functions. |
1025 // Z condition flag: Z==0 if d16-d31 available, Z==1 otherwise. | 854 // Usage: call the appropriate arithmetic function and then call one of the |
1026 void CheckFor32DRegs(Register scratch); | 855 // flow control functions with the corresponding label. |
1027 | 856 |
1028 // Does a runtime check for 16/32 FP registers. Either way, pushes 32 double | 857 // Compute dst = left + right, setting condition codes. dst may be same as |
1029 // values to location, saving [d0..(d15|d31)]. | 858 // either left or right (or a unique register). left and right must not be |
1030 void SaveFPRegs(Register location, Register scratch); | 859 // the same register. |
| 860 void AddAndCheckForOverflow(Register dst, Register left, Register right, |
| 861 Register overflow_dst, Register scratch = r0); |
1031 | 862 |
1032 // Does a runtime check for 16/32 FP registers. Either way, pops 32 double | 863 // Compute dst = left - right, setting condition codes. dst may be same as |
1033 // values to location, restoring [d0..(d15|d31)]. | 864 // either left or right (or a unique register). left and right must not be |
1034 void RestoreFPRegs(Register location, Register scratch); | 865 // the same register. |
| 866 void SubAndCheckForOverflow(Register dst, Register left, Register right, |
| 867 Register overflow_dst, Register scratch = r0); |
| 868 |
| 869 void BranchOnOverflow(Label* label) { blt(label, cr0); } |
| 870 |
| 871 void BranchOnNoOverflow(Label* label) { bge(label, cr0); } |
| 872 |
| 873 void RetOnOverflow(void) { |
| 874 Label label; |
| 875 |
| 876 blt(&label, cr0); |
| 877 Ret(); |
| 878 bind(&label); |
| 879 } |
| 880 |
| 881 void RetOnNoOverflow(void) { |
| 882 Label label; |
| 883 |
| 884 bge(&label, cr0); |
| 885 Ret(); |
| 886 bind(&label); |
| 887 } |
| 888 |
| 889 // Pushes <count> double values to <location>, starting from d<first>. |
| 890 void SaveFPRegs(Register location, int first, int count); |
| 891 |
| 892 // Pops <count> double values from <location>, starting from d<first>. |
| 893 void RestoreFPRegs(Register location, int first, int count); |
1035 | 894 |
1036 // --------------------------------------------------------------------------- | 895 // --------------------------------------------------------------------------- |
1037 // Runtime calls | 896 // Runtime calls |
1038 | 897 |
1039 // Call a code stub. | 898 // Call a code stub. |
1040 void CallStub(CodeStub* stub, | 899 void CallStub(CodeStub* stub, TypeFeedbackId ast_id = TypeFeedbackId::None(), |
1041 TypeFeedbackId ast_id = TypeFeedbackId::None(), | |
1042 Condition cond = al); | 900 Condition cond = al); |
1043 | 901 |
1044 // Call a code stub. | 902 // Call a code stub. |
1045 void TailCallStub(CodeStub* stub, Condition cond = al); | 903 void TailCallStub(CodeStub* stub, Condition cond = al); |
1046 | 904 |
1047 // Call a runtime routine. | 905 // Call a runtime routine. |
1048 void CallRuntime(const Runtime::Function* f, | 906 void CallRuntime(const Runtime::Function* f, int num_arguments, |
1049 int num_arguments, | |
1050 SaveFPRegsMode save_doubles = kDontSaveFPRegs); | 907 SaveFPRegsMode save_doubles = kDontSaveFPRegs); |
1051 void CallRuntimeSaveDoubles(Runtime::FunctionId id) { | 908 void CallRuntimeSaveDoubles(Runtime::FunctionId id) { |
1052 const Runtime::Function* function = Runtime::FunctionForId(id); | 909 const Runtime::Function* function = Runtime::FunctionForId(id); |
1053 CallRuntime(function, function->nargs, kSaveFPRegs); | 910 CallRuntime(function, function->nargs, kSaveFPRegs); |
1054 } | 911 } |
1055 | 912 |
1056 // Convenience function: Same as above, but takes the fid instead. | 913 // Convenience function: Same as above, but takes the fid instead. |
1057 void CallRuntime(Runtime::FunctionId id, | 914 void CallRuntime(Runtime::FunctionId id, int num_arguments, |
1058 int num_arguments, | |
1059 SaveFPRegsMode save_doubles = kDontSaveFPRegs) { | 915 SaveFPRegsMode save_doubles = kDontSaveFPRegs) { |
1060 CallRuntime(Runtime::FunctionForId(id), num_arguments, save_doubles); | 916 CallRuntime(Runtime::FunctionForId(id), num_arguments, save_doubles); |
1061 } | 917 } |
1062 | 918 |
1063 // Convenience function: call an external reference. | 919 // Convenience function: call an external reference. |
1064 void CallExternalReference(const ExternalReference& ext, | 920 void CallExternalReference(const ExternalReference& ext, int num_arguments); |
1065 int num_arguments); | |
1066 | 921 |
1067 // Tail call of a runtime routine (jump). | 922 // Tail call of a runtime routine (jump). |
1068 // Like JumpToExternalReference, but also takes care of passing the number | 923 // Like JumpToExternalReference, but also takes care of passing the number |
1069 // of parameters. | 924 // of parameters. |
1070 void TailCallExternalReference(const ExternalReference& ext, | 925 void TailCallExternalReference(const ExternalReference& ext, |
1071 int num_arguments, | 926 int num_arguments, int result_size); |
1072 int result_size); | |
1073 | 927 |
1074 // Convenience function: tail call a runtime routine (jump). | 928 // Convenience function: tail call a runtime routine (jump). |
1075 void TailCallRuntime(Runtime::FunctionId fid, | 929 void TailCallRuntime(Runtime::FunctionId fid, int num_arguments, |
1076 int num_arguments, | |
1077 int result_size); | 930 int result_size); |
1078 | 931 |
1079 int CalculateStackPassedWords(int num_reg_arguments, | 932 int CalculateStackPassedWords(int num_reg_arguments, |
1080 int num_double_arguments); | 933 int num_double_arguments); |
1081 | 934 |
1082 // Before calling a C-function from generated code, align arguments on stack. | 935 // Before calling a C-function from generated code, align arguments on stack. |
1083 // After aligning the frame, non-register arguments must be stored in | 936 // After aligning the frame, non-register arguments must be stored in |
1084 // sp[0], sp[4], etc., not pushed. The argument count assumes all arguments | 937 // sp[0], sp[4], etc., not pushed. The argument count assumes all arguments |
1085 // are word sized. If double arguments are used, this function assumes that | 938 // are word sized. If double arguments are used, this function assumes that |
1086 // all double arguments are stored before core registers; otherwise the | 939 // all double arguments are stored before core registers; otherwise the |
1087 // correct alignment of the double values is not guaranteed. | 940 // correct alignment of the double values is not guaranteed. |
1088 // Some compilers/platforms require the stack to be aligned when calling | 941 // Some compilers/platforms require the stack to be aligned when calling |
1089 // C++ code. | 942 // C++ code. |
1090 // Needs a scratch register to do some arithmetic. This register will be | 943 // Needs a scratch register to do some arithmetic. This register will be |
1091 // trashed. | 944 // trashed. |
1092 void PrepareCallCFunction(int num_reg_arguments, | 945 void PrepareCallCFunction(int num_reg_arguments, int num_double_registers, |
1093 int num_double_registers, | |
1094 Register scratch); | 946 Register scratch); |
1095 void PrepareCallCFunction(int num_reg_arguments, | 947 void PrepareCallCFunction(int num_reg_arguments, Register scratch); |
1096 Register scratch); | |
1097 | 948 |
1098 // There are two ways of passing double arguments on ARM, depending on | 949 // There are two ways of passing double arguments on ARM, depending on |
1099 // whether soft or hard floating point ABI is used. These functions | 950 // whether soft or hard floating point ABI is used. These functions |
1100 // abstract parameter passing for the three different ways we call | 951 // abstract parameter passing for the three different ways we call |
1101 // C functions from generated code. | 952 // C functions from generated code. |
1102 void MovToFloatParameter(DwVfpRegister src); | 953 void MovToFloatParameter(DoubleRegister src); |
1103 void MovToFloatParameters(DwVfpRegister src1, DwVfpRegister src2); | 954 void MovToFloatParameters(DoubleRegister src1, DoubleRegister src2); |
1104 void MovToFloatResult(DwVfpRegister src); | 955 void MovToFloatResult(DoubleRegister src); |
1105 | 956 |
1106 // Calls a C function and cleans up the space for arguments allocated | 957 // Calls a C function and cleans up the space for arguments allocated |
1107 // by PrepareCallCFunction. The called function is not allowed to trigger a | 958 // by PrepareCallCFunction. The called function is not allowed to trigger a |
1108 // garbage collection, since that might move the code and invalidate the | 959 // garbage collection, since that might move the code and invalidate the |
1109 // return address (unless this is somehow accounted for by the called | 960 // return address (unless this is somehow accounted for by the called |
1110 // function). | 961 // function). |
1111 void CallCFunction(ExternalReference function, int num_arguments); | 962 void CallCFunction(ExternalReference function, int num_arguments); |
1112 void CallCFunction(Register function, int num_arguments); | 963 void CallCFunction(Register function, int num_arguments); |
1113 void CallCFunction(ExternalReference function, | 964 void CallCFunction(ExternalReference function, int num_reg_arguments, |
1114 int num_reg_arguments, | |
1115 int num_double_arguments); | 965 int num_double_arguments); |
1116 void CallCFunction(Register function, | 966 void CallCFunction(Register function, int num_reg_arguments, |
1117 int num_reg_arguments, | |
1118 int num_double_arguments); | 967 int num_double_arguments); |
1119 | 968 |
1120 void MovFromFloatParameter(DwVfpRegister dst); | 969 void MovFromFloatParameter(DoubleRegister dst); |
1121 void MovFromFloatResult(DwVfpRegister dst); | 970 void MovFromFloatResult(DoubleRegister dst); |
1122 | 971 |
1123 // Calls an API function. Allocates HandleScope, extracts returned value | 972 // Calls an API function. Allocates HandleScope, extracts returned value |
1124 // from handle and propagates exceptions. Restores context. stack_space | 973 // from handle and propagates exceptions. Restores context. stack_space |
1125 // - space to be unwound on exit (includes the call JS arguments space and | 974 // - space to be unwound on exit (includes the call JS arguments space and |
1126 // the additional space allocated for the fast call). | 975 // the additional space allocated for the fast call). |
1127 void CallApiFunctionAndReturn(Register function_address, | 976 void CallApiFunctionAndReturn(Register function_address, |
1128 ExternalReference thunk_ref, | 977 ExternalReference thunk_ref, int stack_space, |
1129 int stack_space, | |
1130 MemOperand return_value_operand, | 978 MemOperand return_value_operand, |
1131 MemOperand* context_restore_operand); | 979 MemOperand* context_restore_operand); |
1132 | 980 |
1133 // Jump to a runtime routine. | 981 // Jump to a runtime routine. |
1134 void JumpToExternalReference(const ExternalReference& builtin); | 982 void JumpToExternalReference(const ExternalReference& builtin); |
1135 | 983 |
1136 // Invoke specified builtin JavaScript function. Adds an entry to | 984 // Invoke specified builtin JavaScript function. Adds an entry to |
1137 // the unresolved list if the name does not resolve. | 985 // the unresolved list if the name does not resolve. |
1138 void InvokeBuiltin(Builtins::JavaScript id, | 986 void InvokeBuiltin(Builtins::JavaScript id, InvokeFlag flag, |
1139 InvokeFlag flag, | |
1140 const CallWrapper& call_wrapper = NullCallWrapper()); | 987 const CallWrapper& call_wrapper = NullCallWrapper()); |
1141 | 988 |
1142 // Store the code object for the given builtin in the target register and | 989 // Store the code object for the given builtin in the target register and |
1143 // setup the function in r1. | 990 // setup the function in r1. |
1144 void GetBuiltinEntry(Register target, Builtins::JavaScript id); | 991 void GetBuiltinEntry(Register target, Builtins::JavaScript id); |
1145 | 992 |
1146 // Store the function for the given builtin in the target register. | 993 // Store the function for the given builtin in the target register. |
1147 void GetBuiltinFunction(Register target, Builtins::JavaScript id); | 994 void GetBuiltinFunction(Register target, Builtins::JavaScript id); |
1148 | 995 |
1149 Handle<Object> CodeObject() { | 996 Handle<Object> CodeObject() { |
1150 DCHECK(!code_object_.is_null()); | 997 DCHECK(!code_object_.is_null()); |
1151 return code_object_; | 998 return code_object_; |
1152 } | 999 } |
1153 | 1000 |
1154 | 1001 |
1155 // Emit code for a truncating division by a constant. The dividend register is | 1002 // Emit code for a truncating division by a constant. The dividend register is |
1156 // unchanged and ip gets clobbered. Dividend and result must be different. | 1003 // unchanged and ip gets clobbered. Dividend and result must be different. |
1157 void TruncatingDiv(Register result, Register dividend, int32_t divisor); | 1004 void TruncatingDiv(Register result, Register dividend, int32_t divisor); |
1158 | 1005 |
1159 // --------------------------------------------------------------------------- | 1006 // --------------------------------------------------------------------------- |
1160 // StatsCounter support | 1007 // StatsCounter support |
1161 | 1008 |
1162 void SetCounter(StatsCounter* counter, int value, | 1009 void SetCounter(StatsCounter* counter, int value, Register scratch1, |
1163 Register scratch1, Register scratch2); | 1010 Register scratch2); |
1164 void IncrementCounter(StatsCounter* counter, int value, | 1011 void IncrementCounter(StatsCounter* counter, int value, Register scratch1, |
1165 Register scratch1, Register scratch2); | 1012 Register scratch2); |
1166 void DecrementCounter(StatsCounter* counter, int value, | 1013 void DecrementCounter(StatsCounter* counter, int value, Register scratch1, |
1167 Register scratch1, Register scratch2); | 1014 Register scratch2); |
1168 | 1015 |
1169 | 1016 |
1170 // --------------------------------------------------------------------------- | 1017 // --------------------------------------------------------------------------- |
1171 // Debugging | 1018 // Debugging |
1172 | 1019 |
1173 // Calls Abort(msg) if the condition cond is not satisfied. | 1020 // Calls Abort(msg) if the condition cond is not satisfied. |
1174 // Use --debug_code to enable. | 1021 // Use --debug_code to enable. |
1175 void Assert(Condition cond, BailoutReason reason); | 1022 void Assert(Condition cond, BailoutReason reason, CRegister cr = cr7); |
1176 void AssertFastElements(Register elements); | 1023 void AssertFastElements(Register elements); |
1177 | 1024 |
1178 // Like Assert(), but always enabled. | 1025 // Like Assert(), but always enabled. |
1179 void Check(Condition cond, BailoutReason reason); | 1026 void Check(Condition cond, BailoutReason reason, CRegister cr = cr7); |
1180 | 1027 |
1181 // Print a message to stdout and abort execution. | 1028 // Print a message to stdout and abort execution. |
1182 void Abort(BailoutReason msg); | 1029 void Abort(BailoutReason reason); |
1183 | 1030 |
1184 // Verify restrictions about code generated in stubs. | 1031 // Verify restrictions about code generated in stubs. |
1185 void set_generating_stub(bool value) { generating_stub_ = value; } | 1032 void set_generating_stub(bool value) { generating_stub_ = value; } |
1186 bool generating_stub() { return generating_stub_; } | 1033 bool generating_stub() { return generating_stub_; } |
1187 void set_has_frame(bool value) { has_frame_ = value; } | 1034 void set_has_frame(bool value) { has_frame_ = value; } |
1188 bool has_frame() { return has_frame_; } | 1035 bool has_frame() { return has_frame_; } |
1189 inline bool AllowThisStubCall(CodeStub* stub); | 1036 inline bool AllowThisStubCall(CodeStub* stub); |
1190 | 1037 |
1191 // EABI variant for double arguments in use. | |
1192 bool use_eabi_hardfloat() { | |
1193 #ifdef __arm__ | |
1194 return base::OS::ArmUsingHardFloat(); | |
1195 #elif USE_EABI_HARDFLOAT | |
1196 return true; | |
1197 #else | |
1198 return false; | |
1199 #endif | |
1200 } | |
1201 | |
1202 // --------------------------------------------------------------------------- | 1038 // --------------------------------------------------------------------------- |
1203 // Number utilities | 1039 // Number utilities |
1204 | 1040 |
1205 // Check whether the value of reg is a power of two and not zero. If not | 1041 // Check whether the value of reg is a power of two and not zero. If not |
1206 // control continues at the label not_power_of_two. If reg is a power of two | 1042 // control continues at the label not_power_of_two. If reg is a power of two |
1207 // the register scratch contains the value of (reg - 1) when control falls | 1043 // the register scratch contains the value of (reg - 1) when control falls |
1208 // through. | 1044 // through. |
1209 void JumpIfNotPowerOfTwoOrZero(Register reg, | 1045 void JumpIfNotPowerOfTwoOrZero(Register reg, Register scratch, |
1210 Register scratch, | |
1211 Label* not_power_of_two_or_zero); | 1046 Label* not_power_of_two_or_zero); |
1212 // Check whether the value of reg is a power of two and not zero. | 1047 // Check whether the value of reg is a power of two and not zero. |
1213 // Control falls through if it is, with scratch containing the mask | 1048 // Control falls through if it is, with scratch containing the mask |
1214 // value (reg - 1). | 1049 // value (reg - 1). |
1215 // Otherwise control jumps to the 'zero_and_neg' label if the value of reg is | 1050 // Otherwise control jumps to the 'zero_and_neg' label if the value of reg is |
1216 // zero or negative, or jumps to the 'not_power_of_two' label if the value is | 1051 // zero or negative, or jumps to the 'not_power_of_two' label if the value is |
1217 // strictly positive but not a power of two. | 1052 // strictly positive but not a power of two. |
1218 void JumpIfNotPowerOfTwoOrZeroAndNeg(Register reg, | 1053 void JumpIfNotPowerOfTwoOrZeroAndNeg(Register reg, Register scratch, |
1219 Register scratch, | |
1220 Label* zero_and_neg, | 1054 Label* zero_and_neg, |
1221 Label* not_power_of_two); | 1055 Label* not_power_of_two); |
1222 | 1056 |
1223 // --------------------------------------------------------------------------- | 1057 // --------------------------------------------------------------------------- |
1224 // Smi utilities | 1058 // Bit testing/extraction |
| 1059 // |
| 1060 // Bit numbering is such that the least significant bit is bit 0 |
| 1061 // (for consistency between 32/64-bit). |
1225 | 1062 |
1226 void SmiTag(Register reg, SBit s = LeaveCC) { | 1063 // Extract consecutive bits (defined by rangeStart - rangeEnd) from src |
1227 add(reg, reg, Operand(reg), s); | 1064 // and place them into the least significant bits of dst. |
1228 } | 1065 inline void ExtractBitRange(Register dst, Register src, int rangeStart, |
1229 void SmiTag(Register dst, Register src, SBit s = LeaveCC) { | 1066 int rangeEnd, RCBit rc = LeaveRC) { |
1230 add(dst, src, Operand(src), s); | 1067 DCHECK(rangeStart >= rangeEnd && rangeStart < kBitsPerPointer); |
| 1068 int rotate = (rangeEnd == 0) ? 0 : kBitsPerPointer - rangeEnd; |
| 1069 int width = rangeStart - rangeEnd + 1; |
| 1070 #if V8_TARGET_ARCH_PPC64 |
| 1071 rldicl(dst, src, rotate, kBitsPerPointer - width, rc); |
| 1072 #else |
| 1073 rlwinm(dst, src, rotate, kBitsPerPointer - width, kBitsPerPointer - 1, rc); |
| 1074 #endif |
1231 } | 1075 } |
1232 | 1076 |
1233 // Try to convert int32 to smi. If the value is to large, preserve | 1077 inline void ExtractBit(Register dst, Register src, uint32_t bitNumber, |
1234 // the original value and jump to not_a_smi. Destroys scratch and | 1078 RCBit rc = LeaveRC) { |
1235 // sets flags. | 1079 ExtractBitRange(dst, src, bitNumber, bitNumber, rc); |
1236 void TrySmiTag(Register reg, Label* not_a_smi) { | |
1237 TrySmiTag(reg, reg, not_a_smi); | |
1238 } | 1080 } |
1239 void TrySmiTag(Register reg, Register src, Label* not_a_smi) { | 1081 |
1240 SmiTag(ip, src, SetCC); | 1082 // Extract consecutive bits (defined by mask) from src and place them |
1241 b(vs, not_a_smi); | 1083 // into the least significant bits of dst. |
1242 mov(reg, ip); | 1084 inline void ExtractBitMask(Register dst, Register src, uintptr_t mask, |
| 1085 RCBit rc = LeaveRC) { |
| 1086 int start = kBitsPerPointer - 1; |
| 1087 int end; |
| 1088 uintptr_t bit = (1L << start); |
| 1089 |
| 1090 while (bit && (mask & bit) == 0) { |
| 1091 start--; |
| 1092 bit >>= 1; |
| 1093 } |
| 1094 end = start; |
| 1095 bit >>= 1; |
| 1096 |
| 1097 while (bit && (mask & bit)) { |
| 1098 end--; |
| 1099 bit >>= 1; |
| 1100 } |
| 1101 |
| 1102 // 1-bits in mask must be contiguous |
| 1103 DCHECK(bit == 0 || (mask & ((bit << 1) - 1)) == 0); |
| 1104 |
| 1105 ExtractBitRange(dst, src, start, end, rc); |
| 1106 } |
| 1107 |
| 1108 // Test single bit in value. |
| 1109 inline void TestBit(Register value, int bitNumber, Register scratch = r0) { |
| 1110 ExtractBitRange(scratch, value, bitNumber, bitNumber, SetRC); |
| 1111 } |
| 1112 |
| 1113 // Test consecutive bit range in value. Range is defined by |
| 1114 // rangeStart - rangeEnd. |
| 1115 inline void TestBitRange(Register value, int rangeStart, int rangeEnd, |
| 1116 Register scratch = r0) { |
| 1117 ExtractBitRange(scratch, value, rangeStart, rangeEnd, SetRC); |
| 1118 } |
| 1119 |
| 1120 // Test consecutive bit range in value. Range is defined by mask. |
| 1121 inline void TestBitMask(Register value, uintptr_t mask, |
| 1122 Register scratch = r0) { |
| 1123 ExtractBitMask(scratch, value, mask, SetRC); |
1243 } | 1124 } |
1244 | 1125 |
1245 | 1126 |
1246 void SmiUntag(Register reg, SBit s = LeaveCC) { | 1127 // --------------------------------------------------------------------------- |
1247 mov(reg, Operand::SmiUntag(reg), s); | 1128 // Smi utilities |
| 1129 |
| 1130 // Shift left by 1 |
| 1131 void SmiTag(Register reg, RCBit rc = LeaveRC) { SmiTag(reg, reg, rc); } |
| 1132 void SmiTag(Register dst, Register src, RCBit rc = LeaveRC) { |
| 1133 ShiftLeftImm(dst, src, Operand(kSmiShift), rc); |
1248 } | 1134 } |
1249 void SmiUntag(Register dst, Register src, SBit s = LeaveCC) { | 1135 |
1250 mov(dst, Operand::SmiUntag(src), s); | 1136 #if !V8_TARGET_ARCH_PPC64 |
| 1137 // Test for overflow < 0: use BranchOnOverflow() or BranchOnNoOverflow(). |
| 1138 void SmiTagCheckOverflow(Register reg, Register overflow); |
| 1139 void SmiTagCheckOverflow(Register dst, Register src, Register overflow); |
| 1140 |
| 1141 inline void JumpIfNotSmiCandidate(Register value, Register scratch, |
| 1142 Label* not_smi_label) { |
| 1143 // High bits must be identical to fit into an Smi |
| 1144 addis(scratch, value, Operand(0x40000000u >> 16)); |
| 1145 cmpi(scratch, Operand::Zero()); |
| 1146 blt(not_smi_label); |
| 1147 } |
| 1148 #endif |
| 1149 inline void TestUnsignedSmiCandidate(Register value, Register scratch) { |
| 1150 // The test is different for unsigned int values. Since we need |
| 1151 // the value to be in the range of a positive smi, we can't |
| 1152 // handle any of the high bits being set in the value. |
| 1153 TestBitRange(value, kBitsPerPointer - 1, kBitsPerPointer - 1 - kSmiShift, |
| 1154 scratch); |
| 1155 } |
| 1156 inline void JumpIfNotUnsignedSmiCandidate(Register value, Register scratch, |
| 1157 Label* not_smi_label) { |
| 1158 TestUnsignedSmiCandidate(value, scratch); |
| 1159 bne(not_smi_label, cr0); |
| 1160 } |
| 1161 |
| 1162 void SmiUntag(Register reg, RCBit rc = LeaveRC) { SmiUntag(reg, reg, rc); } |
| 1163 |
| 1164 void SmiUntag(Register dst, Register src, RCBit rc = LeaveRC) { |
| 1165 ShiftRightArithImm(dst, src, kSmiShift, rc); |
| 1166 } |
| 1167 |
| 1168 void SmiToPtrArrayOffset(Register dst, Register src) { |
| 1169 #if V8_TARGET_ARCH_PPC64 |
| 1170 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > kPointerSizeLog2); |
| 1171 ShiftRightArithImm(dst, src, kSmiShift - kPointerSizeLog2); |
| 1172 #else |
| 1173 STATIC_ASSERT(kSmiTag == 0 && kSmiShift < kPointerSizeLog2); |
| 1174 ShiftLeftImm(dst, src, Operand(kPointerSizeLog2 - kSmiShift)); |
| 1175 #endif |
| 1176 } |
| 1177 |
| 1178 void SmiToByteArrayOffset(Register dst, Register src) { SmiUntag(dst, src); } |
| 1179 |
| 1180 void SmiToShortArrayOffset(Register dst, Register src) { |
| 1181 #if V8_TARGET_ARCH_PPC64 |
| 1182 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > 1); |
| 1183 ShiftRightArithImm(dst, src, kSmiShift - 1); |
| 1184 #else |
| 1185 STATIC_ASSERT(kSmiTag == 0 && kSmiShift == 1); |
| 1186 if (!dst.is(src)) { |
| 1187 mr(dst, src); |
| 1188 } |
| 1189 #endif |
| 1190 } |
| 1191 |
| 1192 void SmiToIntArrayOffset(Register dst, Register src) { |
| 1193 #if V8_TARGET_ARCH_PPC64 |
| 1194 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > 2); |
| 1195 ShiftRightArithImm(dst, src, kSmiShift - 2); |
| 1196 #else |
| 1197 STATIC_ASSERT(kSmiTag == 0 && kSmiShift < 2); |
| 1198 ShiftLeftImm(dst, src, Operand(2 - kSmiShift)); |
| 1199 #endif |
| 1200 } |
| 1201 |
| 1202 #define SmiToFloatArrayOffset SmiToIntArrayOffset |
| 1203 |
| 1204 void SmiToDoubleArrayOffset(Register dst, Register src) { |
| 1205 #if V8_TARGET_ARCH_PPC64 |
| 1206 STATIC_ASSERT(kSmiTag == 0 && kSmiShift > kDoubleSizeLog2); |
| 1207 ShiftRightArithImm(dst, src, kSmiShift - kDoubleSizeLog2); |
| 1208 #else |
| 1209 STATIC_ASSERT(kSmiTag == 0 && kSmiShift < kDoubleSizeLog2); |
| 1210 ShiftLeftImm(dst, src, Operand(kDoubleSizeLog2 - kSmiShift)); |
| 1211 #endif |
| 1212 } |
| 1213 |
| 1214 void SmiToArrayOffset(Register dst, Register src, int elementSizeLog2) { |
| 1215 if (kSmiShift < elementSizeLog2) { |
| 1216 ShiftLeftImm(dst, src, Operand(elementSizeLog2 - kSmiShift)); |
| 1217 } else if (kSmiShift > elementSizeLog2) { |
| 1218 ShiftRightArithImm(dst, src, kSmiShift - elementSizeLog2); |
| 1219 } else if (!dst.is(src)) { |
| 1220 mr(dst, src); |
| 1221 } |
| 1222 } |
| 1223 |
| 1224 void IndexToArrayOffset(Register dst, Register src, int elementSizeLog2, |
| 1225 bool isSmi) { |
| 1226 if (isSmi) { |
| 1227 SmiToArrayOffset(dst, src, elementSizeLog2); |
| 1228 } else { |
| 1229 ShiftLeftImm(dst, src, Operand(elementSizeLog2)); |
| 1230 } |
1251 } | 1231 } |
1252 | 1232 |
1253 // Untag the source value into destination and jump if source is a smi. | 1233 // Untag the source value into destination and jump if source is a smi. |
1254 // Souce and destination can be the same register. | 1234 // Souce and destination can be the same register. |
1255 void UntagAndJumpIfSmi(Register dst, Register src, Label* smi_case); | 1235 void UntagAndJumpIfSmi(Register dst, Register src, Label* smi_case); |
1256 | 1236 |
1257 // Untag the source value into destination and jump if source is not a smi. | 1237 // Untag the source value into destination and jump if source is not a smi. |
1258 // Souce and destination can be the same register. | 1238 // Souce and destination can be the same register. |
1259 void UntagAndJumpIfNotSmi(Register dst, Register src, Label* non_smi_case); | 1239 void UntagAndJumpIfNotSmi(Register dst, Register src, Label* non_smi_case); |
1260 | 1240 |
1261 // Test if the register contains a smi (Z == 0 (eq) if true). | 1241 inline void TestIfSmi(Register value, Register scratch) { |
1262 inline void SmiTst(Register value) { | 1242 TestBit(value, 0, scratch); // tst(value, Operand(kSmiTagMask)); |
1263 tst(value, Operand(kSmiTagMask)); | |
1264 } | 1243 } |
1265 inline void NonNegativeSmiTst(Register value) { | 1244 |
1266 tst(value, Operand(kSmiTagMask | kSmiSignMask)); | 1245 inline void TestIfPositiveSmi(Register value, Register scratch) { |
| 1246 STATIC_ASSERT((kSmiTagMask | kSmiSignMask) == |
| 1247 (intptr_t)(1UL << (kBitsPerPointer - 1) | 1)); |
| 1248 #if V8_TARGET_ARCH_PPC64 |
| 1249 rldicl(scratch, value, 1, kBitsPerPointer - 2, SetRC); |
| 1250 #else |
| 1251 rlwinm(scratch, value, 1, kBitsPerPointer - 2, kBitsPerPointer - 1, SetRC); |
| 1252 #endif |
1267 } | 1253 } |
1268 // Jump if the register contains a smi. | 1254 |
| 1255 // Jump the register contains a smi. |
1269 inline void JumpIfSmi(Register value, Label* smi_label) { | 1256 inline void JumpIfSmi(Register value, Label* smi_label) { |
1270 tst(value, Operand(kSmiTagMask)); | 1257 TestIfSmi(value, r0); |
1271 b(eq, smi_label); | 1258 beq(smi_label, cr0); // branch if SMI |
1272 } | 1259 } |
1273 // Jump if either of the registers contain a non-smi. | 1260 // Jump if either of the registers contain a non-smi. |
1274 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { | 1261 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { |
1275 tst(value, Operand(kSmiTagMask)); | 1262 TestIfSmi(value, r0); |
1276 b(ne, not_smi_label); | 1263 bne(not_smi_label, cr0); |
1277 } | 1264 } |
1278 // Jump if either of the registers contain a non-smi. | 1265 // Jump if either of the registers contain a non-smi. |
1279 void JumpIfNotBothSmi(Register reg1, Register reg2, Label* on_not_both_smi); | 1266 void JumpIfNotBothSmi(Register reg1, Register reg2, Label* on_not_both_smi); |
1280 // Jump if either of the registers contain a smi. | 1267 // Jump if either of the registers contain a smi. |
1281 void JumpIfEitherSmi(Register reg1, Register reg2, Label* on_either_smi); | 1268 void JumpIfEitherSmi(Register reg1, Register reg2, Label* on_either_smi); |
1282 | 1269 |
1283 // Abort execution if argument is a smi, enabled via --debug-code. | 1270 // Abort execution if argument is a smi, enabled via --debug-code. |
1284 void AssertNotSmi(Register object); | 1271 void AssertNotSmi(Register object); |
1285 void AssertSmi(Register object); | 1272 void AssertSmi(Register object); |
1286 | 1273 |
| 1274 |
| 1275 #if V8_TARGET_ARCH_PPC64 |
| 1276 inline void TestIfInt32(Register value, Register scratch1, Register scratch2, |
| 1277 CRegister cr = cr7) { |
| 1278 // High bits must be identical to fit into an 32-bit integer |
| 1279 srawi(scratch1, value, 31); |
| 1280 sradi(scratch2, value, 32); |
| 1281 cmp(scratch1, scratch2, cr); |
| 1282 } |
| 1283 #else |
| 1284 inline void TestIfInt32(Register hi_word, Register lo_word, Register scratch, |
| 1285 CRegister cr = cr7) { |
| 1286 // High bits must be identical to fit into an 32-bit integer |
| 1287 srawi(scratch, lo_word, 31); |
| 1288 cmp(scratch, hi_word, cr); |
| 1289 } |
| 1290 #endif |
| 1291 |
1287 // Abort execution if argument is not a string, enabled via --debug-code. | 1292 // Abort execution if argument is not a string, enabled via --debug-code. |
1288 void AssertString(Register object); | 1293 void AssertString(Register object); |
1289 | 1294 |
1290 // Abort execution if argument is not a name, enabled via --debug-code. | 1295 // Abort execution if argument is not a name, enabled via --debug-code. |
1291 void AssertName(Register object); | 1296 void AssertName(Register object); |
1292 | 1297 |
1293 // Abort execution if argument is not undefined or an AllocationSite, enabled | 1298 // Abort execution if argument is not undefined or an AllocationSite, enabled |
1294 // via --debug-code. | 1299 // via --debug-code. |
1295 void AssertUndefinedOrAllocationSite(Register object, Register scratch); | 1300 void AssertUndefinedOrAllocationSite(Register object, Register scratch); |
1296 | 1301 |
1297 // Abort execution if reg is not the root value with the given index, | 1302 // Abort execution if reg is not the root value with the given index, |
1298 // enabled via --debug-code. | 1303 // enabled via --debug-code. |
1299 void AssertIsRoot(Register reg, Heap::RootListIndex index); | 1304 void AssertIsRoot(Register reg, Heap::RootListIndex index); |
1300 | 1305 |
1301 // --------------------------------------------------------------------------- | 1306 // --------------------------------------------------------------------------- |
1302 // HeapNumber utilities | 1307 // HeapNumber utilities |
1303 | 1308 |
1304 void JumpIfNotHeapNumber(Register object, | 1309 void JumpIfNotHeapNumber(Register object, Register heap_number_map, |
1305 Register heap_number_map, | 1310 Register scratch, Label* on_not_heap_number); |
1306 Register scratch, | |
1307 Label* on_not_heap_number); | |
1308 | 1311 |
1309 // --------------------------------------------------------------------------- | 1312 // --------------------------------------------------------------------------- |
1310 // String utilities | 1313 // String utilities |
1311 | 1314 |
1312 // Generate code to do a lookup in the number string cache. If the number in | 1315 // Generate code to do a lookup in the number string cache. If the number in |
1313 // the register object is found in the cache the generated code falls through | 1316 // the register object is found in the cache the generated code falls through |
1314 // with the result in the result register. The object and the result register | 1317 // with the result in the result register. The object and the result register |
1315 // can be the same. If the number is not found in the cache the code jumps to | 1318 // can be the same. If the number is not found in the cache the code jumps to |
1316 // the label not_found with only the content of register object unchanged. | 1319 // the label not_found with only the content of register object unchanged. |
1317 void LookupNumberStringCache(Register object, | 1320 void LookupNumberStringCache(Register object, Register result, |
1318 Register result, | 1321 Register scratch1, Register scratch2, |
1319 Register scratch1, | 1322 Register scratch3, Label* not_found); |
1320 Register scratch2, | |
1321 Register scratch3, | |
1322 Label* not_found); | |
1323 | 1323 |
1324 // Checks if both objects are sequential ASCII strings and jumps to label | 1324 // Checks if both objects are sequential ASCII strings and jumps to label |
1325 // if either is not. Assumes that neither object is a smi. | 1325 // if either is not. Assumes that neither object is a smi. |
1326 void JumpIfNonSmisNotBothSequentialAsciiStrings(Register object1, | 1326 void JumpIfNonSmisNotBothSequentialAsciiStrings(Register object1, |
1327 Register object2, | 1327 Register object2, |
1328 Register scratch1, | 1328 Register scratch1, |
1329 Register scratch2, | 1329 Register scratch2, |
1330 Label* failure); | 1330 Label* failure); |
1331 | 1331 |
1332 // Checks if both objects are sequential ASCII strings and jumps to label | 1332 // Checks if both objects are sequential ASCII strings and jumps to label |
1333 // if either is not. | 1333 // if either is not. |
1334 void JumpIfNotBothSequentialAsciiStrings(Register first, | 1334 void JumpIfNotBothSequentialAsciiStrings(Register first, Register second, |
1335 Register second, | 1335 Register scratch1, Register scratch2, |
1336 Register scratch1, | |
1337 Register scratch2, | |
1338 Label* not_flat_ascii_strings); | 1336 Label* not_flat_ascii_strings); |
1339 | 1337 |
1340 // Checks if both instance types are sequential ASCII strings and jumps to | 1338 // Checks if both instance types are sequential ASCII strings and jumps to |
1341 // label if either is not. | 1339 // label if either is not. |
1342 void JumpIfBothInstanceTypesAreNotSequentialAscii( | 1340 void JumpIfBothInstanceTypesAreNotSequentialAscii( |
1343 Register first_object_instance_type, | 1341 Register first_object_instance_type, Register second_object_instance_type, |
1344 Register second_object_instance_type, | 1342 Register scratch1, Register scratch2, Label* failure); |
1345 Register scratch1, | |
1346 Register scratch2, | |
1347 Label* failure); | |
1348 | 1343 |
1349 // Check if instance type is sequential ASCII string and jump to label if | 1344 // Check if instance type is sequential ASCII string and jump to label if |
1350 // it is not. | 1345 // it is not. |
1351 void JumpIfInstanceTypeIsNotSequentialAscii(Register type, | 1346 void JumpIfInstanceTypeIsNotSequentialAscii(Register type, Register scratch, |
1352 Register scratch, | |
1353 Label* failure); | 1347 Label* failure); |
1354 | 1348 |
1355 void JumpIfNotUniqueName(Register reg, Label* not_unique_name); | 1349 void JumpIfNotUniqueName(Register reg, Label* not_unique_name); |
1356 | 1350 |
1357 void EmitSeqStringSetCharCheck(Register string, | 1351 void EmitSeqStringSetCharCheck(Register string, Register index, |
1358 Register index, | 1352 Register value, uint32_t encoding_mask); |
1359 Register value, | |
1360 uint32_t encoding_mask); | |
1361 | 1353 |
1362 // --------------------------------------------------------------------------- | 1354 // --------------------------------------------------------------------------- |
1363 // Patching helpers. | 1355 // Patching helpers. |
1364 | 1356 |
1365 // Get the location of a relocated constant (its address in the constant pool) | 1357 // Retrieve/patch the relocated value (lis/ori pair or constant pool load). |
1366 // from its load site. | 1358 void GetRelocatedValue(Register location, Register result, Register scratch); |
1367 void GetRelocatedValueLocation(Register ldr_location, Register result, | 1359 void SetRelocatedValue(Register location, Register scratch, |
1368 Register scratch); | 1360 Register new_value); |
1369 | |
1370 | 1361 |
1371 void ClampUint8(Register output_reg, Register input_reg); | 1362 void ClampUint8(Register output_reg, Register input_reg); |
1372 | 1363 |
1373 void ClampDoubleToUint8(Register result_reg, | 1364 // Saturate a value into 8-bit unsigned integer |
1374 DwVfpRegister input_reg, | 1365 // if input_value < 0, output_value is 0 |
1375 LowDwVfpRegister double_scratch); | 1366 // if input_value > 255, output_value is 255 |
| 1367 // otherwise output_value is the (int)input_value (round to nearest) |
| 1368 void ClampDoubleToUint8(Register result_reg, DoubleRegister input_reg, |
| 1369 DoubleRegister temp_double_reg); |
1376 | 1370 |
1377 | 1371 |
1378 void LoadInstanceDescriptors(Register map, Register descriptors); | 1372 void LoadInstanceDescriptors(Register map, Register descriptors); |
1379 void EnumLength(Register dst, Register map); | 1373 void EnumLength(Register dst, Register map); |
1380 void NumberOfOwnDescriptors(Register dst, Register map); | 1374 void NumberOfOwnDescriptors(Register dst, Register map); |
1381 | 1375 |
1382 template<typename Field> | 1376 template <typename Field> |
1383 void DecodeField(Register dst, Register src) { | 1377 void DecodeField(Register dst, Register src) { |
1384 Ubfx(dst, src, Field::kShift, Field::kSize); | 1378 ExtractBitRange(dst, src, Field::kShift + Field::kSize - 1, Field::kShift); |
1385 } | 1379 } |
1386 | 1380 |
1387 template<typename Field> | 1381 template <typename Field> |
1388 void DecodeField(Register reg) { | 1382 void DecodeField(Register reg) { |
1389 DecodeField<Field>(reg, reg); | 1383 DecodeField<Field>(reg, reg); |
1390 } | 1384 } |
1391 | 1385 |
1392 template<typename Field> | 1386 template <typename Field> |
1393 void DecodeFieldToSmi(Register dst, Register src) { | 1387 void DecodeFieldToSmi(Register dst, Register src) { |
1394 static const int shift = Field::kShift; | 1388 #if V8_TARGET_ARCH_PPC64 |
1395 static const int mask = Field::kMask >> shift << kSmiTagSize; | 1389 DecodeField<Field>(dst, src); |
1396 STATIC_ASSERT((mask & (0x80000000u >> (kSmiTagSize - 1))) == 0); | 1390 SmiTag(dst); |
1397 STATIC_ASSERT(kSmiTag == 0); | 1391 #else |
1398 if (shift < kSmiTagSize) { | 1392 // 32-bit can do this in one instruction: |
1399 mov(dst, Operand(src, LSL, kSmiTagSize - shift)); | 1393 int start = Field::kSize + kSmiShift - 1; |
1400 and_(dst, dst, Operand(mask)); | 1394 int end = kSmiShift; |
1401 } else if (shift > kSmiTagSize) { | 1395 int rotate = kSmiShift - Field::kShift; |
1402 mov(dst, Operand(src, LSR, shift - kSmiTagSize)); | 1396 if (rotate < 0) { |
1403 and_(dst, dst, Operand(mask)); | 1397 rotate += kBitsPerPointer; |
1404 } else { | |
1405 and_(dst, src, Operand(mask)); | |
1406 } | 1398 } |
| 1399 rlwinm(dst, src, rotate, kBitsPerPointer - start - 1, |
| 1400 kBitsPerPointer - end - 1); |
| 1401 #endif |
1407 } | 1402 } |
1408 | 1403 |
1409 template<typename Field> | 1404 template <typename Field> |
1410 void DecodeFieldToSmi(Register reg) { | 1405 void DecodeFieldToSmi(Register reg) { |
1411 DecodeField<Field>(reg, reg); | 1406 DecodeFieldToSmi<Field>(reg, reg); |
1412 } | 1407 } |
1413 | 1408 |
1414 // Activation support. | 1409 // Activation support. |
1415 void EnterFrame(StackFrame::Type type, bool load_constant_pool = false); | 1410 void EnterFrame(StackFrame::Type type, bool load_constant_pool = false); |
1416 // Returns the pc offset at which the frame ends. | 1411 // Returns the pc offset at which the frame ends. |
1417 int LeaveFrame(StackFrame::Type type); | 1412 int LeaveFrame(StackFrame::Type type); |
1418 | 1413 |
1419 // Expects object in r0 and returns map with validated enum cache | 1414 // Expects object in r0 and returns map with validated enum cache |
1420 // in r0. Assumes that any other register can be used as a scratch. | 1415 // in r0. Assumes that any other register can be used as a scratch. |
1421 void CheckEnumCache(Register null_value, Label* call_runtime); | 1416 void CheckEnumCache(Register null_value, Label* call_runtime); |
1422 | 1417 |
1423 // AllocationMemento support. Arrays may have an associated | 1418 // AllocationMemento support. Arrays may have an associated |
1424 // AllocationMemento object that can be checked for in order to pretransition | 1419 // AllocationMemento object that can be checked for in order to pretransition |
1425 // to another type. | 1420 // to another type. |
1426 // On entry, receiver_reg should point to the array object. | 1421 // On entry, receiver_reg should point to the array object. |
1427 // scratch_reg gets clobbered. | 1422 // scratch_reg gets clobbered. |
1428 // If allocation info is present, condition flags are set to eq. | 1423 // If allocation info is present, condition flags are set to eq. |
1429 void TestJSArrayForAllocationMemento(Register receiver_reg, | 1424 void TestJSArrayForAllocationMemento(Register receiver_reg, |
1430 Register scratch_reg, | 1425 Register scratch_reg, |
1431 Label* no_memento_found); | 1426 Label* no_memento_found); |
1432 | 1427 |
1433 void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, | 1428 void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, |
1434 Register scratch_reg, | 1429 Register scratch_reg, |
1435 Label* memento_found) { | 1430 Label* memento_found) { |
1436 Label no_memento_found; | 1431 Label no_memento_found; |
1437 TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, | 1432 TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, |
1438 &no_memento_found); | 1433 &no_memento_found); |
1439 b(eq, memento_found); | 1434 beq(memento_found); |
1440 bind(&no_memento_found); | 1435 bind(&no_memento_found); |
1441 } | 1436 } |
1442 | 1437 |
1443 // Jumps to found label if a prototype map has dictionary elements. | 1438 // Jumps to found label if a prototype map has dictionary elements. |
1444 void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, | 1439 void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, |
1445 Register scratch1, Label* found); | 1440 Register scratch1, Label* found); |
1446 | 1441 |
1447 private: | 1442 private: |
1448 void CallCFunctionHelper(Register function, | 1443 static const int kSmiShift = kSmiTagSize + kSmiShiftSize; |
1449 int num_reg_arguments, | 1444 |
| 1445 void CallCFunctionHelper(Register function, int num_reg_arguments, |
1450 int num_double_arguments); | 1446 int num_double_arguments); |
1451 | 1447 |
1452 void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al); | 1448 void Jump(intptr_t target, RelocInfo::Mode rmode, Condition cond = al, |
| 1449 CRegister cr = cr7); |
1453 | 1450 |
1454 // Helper functions for generating invokes. | 1451 // Helper functions for generating invokes. |
1455 void InvokePrologue(const ParameterCount& expected, | 1452 void InvokePrologue(const ParameterCount& expected, |
1456 const ParameterCount& actual, | 1453 const ParameterCount& actual, Handle<Code> code_constant, |
1457 Handle<Code> code_constant, | 1454 Register code_reg, Label* done, |
1458 Register code_reg, | 1455 bool* definitely_mismatches, InvokeFlag flag, |
1459 Label* done, | |
1460 bool* definitely_mismatches, | |
1461 InvokeFlag flag, | |
1462 const CallWrapper& call_wrapper); | 1456 const CallWrapper& call_wrapper); |
1463 | 1457 |
1464 void InitializeNewString(Register string, | 1458 void InitializeNewString(Register string, Register length, |
1465 Register length, | 1459 Heap::RootListIndex map_index, Register scratch1, |
1466 Heap::RootListIndex map_index, | |
1467 Register scratch1, | |
1468 Register scratch2); | 1460 Register scratch2); |
1469 | 1461 |
1470 // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace. | 1462 // Helper for implementing JumpIfNotInNewSpace and JumpIfInNewSpace. |
1471 void InNewSpace(Register object, | 1463 void InNewSpace(Register object, Register scratch, |
1472 Register scratch, | |
1473 Condition cond, // eq for new space, ne otherwise. | 1464 Condition cond, // eq for new space, ne otherwise. |
1474 Label* branch); | 1465 Label* branch); |
1475 | 1466 |
1476 // Helper for finding the mark bits for an address. Afterwards, the | 1467 // Helper for finding the mark bits for an address. Afterwards, the |
1477 // bitmap register points at the word with the mark bits and the mask | 1468 // bitmap register points at the word with the mark bits and the mask |
1478 // the position of the first bit. Leaves addr_reg unchanged. | 1469 // the position of the first bit. Leaves addr_reg unchanged. |
1479 inline void GetMarkBits(Register addr_reg, | 1470 inline void GetMarkBits(Register addr_reg, Register bitmap_reg, |
1480 Register bitmap_reg, | |
1481 Register mask_reg); | 1471 Register mask_reg); |
1482 | 1472 |
1483 // Helper for throwing exceptions. Compute a handler address and jump to | 1473 // Helper for throwing exceptions. Compute a handler address and jump to |
1484 // it. See the implementation for register usage. | 1474 // it. See the implementation for register usage. |
1485 void JumpToHandlerEntry(); | 1475 void JumpToHandlerEntry(); |
1486 | 1476 |
1487 // Compute memory operands for safepoint stack slots. | 1477 // Compute memory operands for safepoint stack slots. |
1488 static int SafepointRegisterStackIndex(int reg_code); | 1478 static int SafepointRegisterStackIndex(int reg_code); |
1489 MemOperand SafepointRegisterSlot(Register reg); | 1479 MemOperand SafepointRegisterSlot(Register reg); |
1490 MemOperand SafepointRegistersAndDoublesSlot(Register reg); | 1480 MemOperand SafepointRegistersAndDoublesSlot(Register reg); |
1491 | 1481 |
1492 // Loads the constant pool pointer (pp) register. | 1482 #if V8_OOL_CONSTANT_POOL |
| 1483 // Loads the constant pool pointer (kConstantPoolRegister). |
1493 void LoadConstantPoolPointerRegister(); | 1484 void LoadConstantPoolPointerRegister(); |
| 1485 #endif |
1494 | 1486 |
1495 bool generating_stub_; | 1487 bool generating_stub_; |
1496 bool has_frame_; | 1488 bool has_frame_; |
1497 // This handle will be patched with the code object on installation. | 1489 // This handle will be patched with the code object on installation. |
1498 Handle<Object> code_object_; | 1490 Handle<Object> code_object_; |
1499 | 1491 |
1500 // Needs access to SafepointRegisterStackIndex for compiled frame | 1492 // Needs access to SafepointRegisterStackIndex for compiled frame |
1501 // traversal. | 1493 // traversal. |
1502 friend class StandardFrame; | 1494 friend class StandardFrame; |
1503 }; | 1495 }; |
1504 | 1496 |
1505 | 1497 |
1506 // 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 |
1507 // debugging and other types of instrumentation. When using the code patcher | 1499 // debugging and other types of instrumentation. When using the code patcher |
1508 // 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 |
1509 // relocation information. If any of these constraints are violated it causes | 1501 // relocation information. If any of these constraints are violated it causes |
1510 // an assertion to fail. | 1502 // an assertion to fail. |
1511 class CodePatcher { | 1503 class CodePatcher { |
1512 public: | 1504 public: |
1513 enum FlushICache { | 1505 enum FlushICache { FLUSH, DONT_FLUSH }; |
1514 FLUSH, | |
1515 DONT_FLUSH | |
1516 }; | |
1517 | 1506 |
1518 CodePatcher(byte* address, | 1507 CodePatcher(byte* address, int instructions, FlushICache flush_cache = FLUSH); |
1519 int instructions, | |
1520 FlushICache flush_cache = FLUSH); | |
1521 virtual ~CodePatcher(); | 1508 virtual ~CodePatcher(); |
1522 | 1509 |
1523 // Macro assembler to emit code. | 1510 // Macro assembler to emit code. |
1524 MacroAssembler* masm() { return &masm_; } | 1511 MacroAssembler* masm() { return &masm_; } |
1525 | 1512 |
1526 // Emit an instruction directly. | 1513 // Emit an instruction directly. |
1527 void Emit(Instr instr); | 1514 void Emit(Instr instr); |
1528 | 1515 |
1529 // Emit an address directly. | |
1530 void Emit(Address addr); | |
1531 | |
1532 // 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 |
1533 // instruction unchanged. | 1517 // instruction unchanged. |
1534 void EmitCondition(Condition cond); | 1518 void EmitCondition(Condition cond); |
1535 | 1519 |
1536 private: | 1520 private: |
1537 byte* address_; // The address of the code being patched. | 1521 byte* address_; // The address of the code being patched. |
1538 int size_; // Number of bytes of the expected patch size. | 1522 int size_; // Number of bytes of the expected patch size. |
1539 MacroAssembler masm_; // Macro assembler used to generate the code. | 1523 MacroAssembler masm_; // Macro assembler used to generate the code. |
1540 FlushICache flush_cache_; // Whether to flush the I cache after patching. | 1524 FlushICache flush_cache_; // Whether to flush the I cache after patching. |
1541 }; | 1525 }; |
1542 | 1526 |
1543 | 1527 |
| 1528 #if V8_OOL_CONSTANT_POOL |
1544 class FrameAndConstantPoolScope { | 1529 class FrameAndConstantPoolScope { |
1545 public: | 1530 public: |
1546 FrameAndConstantPoolScope(MacroAssembler* masm, StackFrame::Type type) | 1531 FrameAndConstantPoolScope(MacroAssembler* masm, StackFrame::Type type) |
1547 : masm_(masm), | 1532 : masm_(masm), |
1548 type_(type), | 1533 type_(type), |
1549 old_has_frame_(masm->has_frame()), | 1534 old_has_frame_(masm->has_frame()), |
1550 old_constant_pool_available_(masm->is_constant_pool_available()) { | 1535 old_constant_pool_available_(masm->is_constant_pool_available()) { |
1551 // We only want to enable constant pool access for non-manual frame scopes | 1536 // We only want to enable constant pool access for non-manual frame scopes |
1552 // to ensure the constant pool pointer is valid throughout the scope. | 1537 // to ensure the constant pool pointer is valid throughout the scope. |
1553 DCHECK(type_ != StackFrame::MANUAL && type_ != StackFrame::NONE); | 1538 DCHECK(type_ != StackFrame::MANUAL && type_ != StackFrame::NONE); |
1554 masm->set_has_frame(true); | 1539 masm->set_has_frame(true); |
1555 masm->set_constant_pool_available(true); | 1540 masm->set_constant_pool_available(true); |
1556 masm->EnterFrame(type, !old_constant_pool_available_); | 1541 masm->EnterFrame(type, !old_constant_pool_available_); |
1557 } | 1542 } |
1558 | 1543 |
1559 ~FrameAndConstantPoolScope() { | 1544 ~FrameAndConstantPoolScope() { |
1560 masm_->LeaveFrame(type_); | 1545 masm_->LeaveFrame(type_); |
(...skipping 12 matching lines...) Expand all Loading... |
1573 } | 1558 } |
1574 | 1559 |
1575 private: | 1560 private: |
1576 MacroAssembler* masm_; | 1561 MacroAssembler* masm_; |
1577 StackFrame::Type type_; | 1562 StackFrame::Type type_; |
1578 bool old_has_frame_; | 1563 bool old_has_frame_; |
1579 bool old_constant_pool_available_; | 1564 bool old_constant_pool_available_; |
1580 | 1565 |
1581 DISALLOW_IMPLICIT_CONSTRUCTORS(FrameAndConstantPoolScope); | 1566 DISALLOW_IMPLICIT_CONSTRUCTORS(FrameAndConstantPoolScope); |
1582 }; | 1567 }; |
| 1568 #else |
| 1569 #define FrameAndConstantPoolScope FrameScope |
| 1570 #endif |
1583 | 1571 |
1584 | 1572 |
| 1573 #if V8_OOL_CONSTANT_POOL |
1585 // Class for scoping the the unavailability of constant pool access. | 1574 // Class for scoping the the unavailability of constant pool access. |
1586 class ConstantPoolUnavailableScope { | 1575 class ConstantPoolUnavailableScope { |
1587 public: | 1576 public: |
1588 explicit ConstantPoolUnavailableScope(MacroAssembler* masm) | 1577 explicit ConstantPoolUnavailableScope(MacroAssembler* masm) |
1589 : masm_(masm), | 1578 : masm_(masm), |
1590 old_constant_pool_available_(masm->is_constant_pool_available()) { | 1579 old_constant_pool_available_(masm->is_constant_pool_available()) { |
1591 if (FLAG_enable_ool_constant_pool) { | 1580 if (FLAG_enable_ool_constant_pool) { |
1592 masm_->set_constant_pool_available(false); | 1581 masm_->set_constant_pool_available(false); |
1593 } | 1582 } |
1594 } | 1583 } |
1595 ~ConstantPoolUnavailableScope() { | 1584 ~ConstantPoolUnavailableScope() { |
1596 if (FLAG_enable_ool_constant_pool) { | 1585 if (FLAG_enable_ool_constant_pool) { |
1597 masm_->set_constant_pool_available(old_constant_pool_available_); | 1586 masm_->set_constant_pool_available(old_constant_pool_available_); |
1598 } | 1587 } |
1599 } | 1588 } |
1600 | 1589 |
1601 private: | 1590 private: |
1602 MacroAssembler* masm_; | 1591 MacroAssembler* masm_; |
1603 int old_constant_pool_available_; | 1592 int old_constant_pool_available_; |
1604 | 1593 |
1605 DISALLOW_IMPLICIT_CONSTRUCTORS(ConstantPoolUnavailableScope); | 1594 DISALLOW_IMPLICIT_CONSTRUCTORS(ConstantPoolUnavailableScope); |
1606 }; | 1595 }; |
| 1596 #endif |
1607 | 1597 |
1608 | 1598 |
1609 // ----------------------------------------------------------------------------- | 1599 // ----------------------------------------------------------------------------- |
1610 // Static helper functions. | 1600 // Static helper functions. |
1611 | 1601 |
1612 inline MemOperand ContextOperand(Register context, int index) { | 1602 inline MemOperand ContextOperand(Register context, int index) { |
1613 return MemOperand(context, Context::SlotOffset(index)); | 1603 return MemOperand(context, Context::SlotOffset(index)); |
1614 } | 1604 } |
1615 | 1605 |
1616 | 1606 |
1617 inline MemOperand GlobalObjectOperand() { | 1607 inline MemOperand GlobalObjectOperand() { |
1618 return ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX); | 1608 return ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX); |
1619 } | 1609 } |
1620 | 1610 |
1621 | 1611 |
1622 #ifdef GENERATED_CODE_COVERAGE | 1612 #ifdef GENERATED_CODE_COVERAGE |
1623 #define CODE_COVERAGE_STRINGIFY(x) #x | 1613 #define CODE_COVERAGE_STRINGIFY(x) #x |
1624 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) | 1614 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) |
1625 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 1615 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
1626 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 1616 #define ACCESS_MASM(masm) \ |
| 1617 masm->stop(__FILE_LINE__); \ |
| 1618 masm-> |
1627 #else | 1619 #else |
1628 #define ACCESS_MASM(masm) masm-> | 1620 #define ACCESS_MASM(masm) masm-> |
1629 #endif | 1621 #endif |
| 1622 } |
| 1623 } // namespace v8::internal |
1630 | 1624 |
1631 | 1625 #endif // V8_PPC_MACRO_ASSEMBLER_PPC_H_ |
1632 } } // namespace v8::internal | |
1633 | |
1634 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | |
OLD | NEW |