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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 28 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
29 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 29 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
30 | 30 |
31 #include "assembler.h" | 31 #include "assembler.h" |
32 #include "type-info.h" | |
33 | 32 |
34 namespace v8 { | 33 namespace v8 { |
35 namespace internal { | 34 namespace internal { |
36 | 35 |
37 // Flags used for the AllocateInNewSpace functions. | 36 // Flags used for the AllocateInNewSpace functions. |
38 enum AllocationFlags { | 37 enum AllocationFlags { |
39 // No special flags. | 38 // No special flags. |
40 NO_ALLOCATION_FLAGS = 0, | 39 NO_ALLOCATION_FLAGS = 0, |
41 // Return the pointer to the allocated already tagged as a heap object. | 40 // Return the pointer to the allocated already tagged as a heap object. |
42 TAG_OBJECT = 1 << 0, | 41 TAG_OBJECT = 1 << 0, |
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238 void SmiTag(Register reg) { | 237 void SmiTag(Register reg) { |
239 ASSERT(kSmiTag == 0); | 238 ASSERT(kSmiTag == 0); |
240 ASSERT(kSmiTagSize == 1); | 239 ASSERT(kSmiTagSize == 1); |
241 add(reg, Operand(reg)); | 240 add(reg, Operand(reg)); |
242 } | 241 } |
243 void SmiUntag(Register reg) { | 242 void SmiUntag(Register reg) { |
244 sar(reg, kSmiTagSize); | 243 sar(reg, kSmiTagSize); |
245 } | 244 } |
246 | 245 |
247 // Modifies the register even if it does not contain a Smi! | 246 // Modifies the register even if it does not contain a Smi! |
248 void SmiUntag(Register reg, TypeInfo info, Label* non_smi) { | |
249 ASSERT(kSmiTagSize == 1); | |
250 sar(reg, kSmiTagSize); | |
251 if (info.IsSmi()) { | |
252 ASSERT(kSmiTag == 0); | |
253 j(carry, non_smi); | |
254 } | |
255 } | |
256 | |
257 // Modifies the register even if it does not contain a Smi! | |
258 void SmiUntag(Register reg, Label* is_smi) { | 247 void SmiUntag(Register reg, Label* is_smi) { |
259 ASSERT(kSmiTagSize == 1); | 248 ASSERT(kSmiTagSize == 1); |
260 sar(reg, kSmiTagSize); | 249 sar(reg, kSmiTagSize); |
261 ASSERT(kSmiTag == 0); | 250 ASSERT(kSmiTag == 0); |
262 j(not_carry, is_smi); | 251 j(not_carry, is_smi); |
263 } | 252 } |
264 | 253 |
265 // Jump the register contains a smi. | 254 // Jump the register contains a smi. |
266 inline void JumpIfSmi(Register value, Label* smi_label) { | 255 inline void JumpIfSmi(Register value, Label* smi_label) { |
267 test(value, Immediate(kSmiTagMask)); | 256 test(value, Immediate(kSmiTagMask)); |
268 j(zero, smi_label, not_taken); | 257 j(zero, smi_label, not_taken); |
269 } | 258 } |
270 // Jump if register contain a non-smi. | 259 // Jump if register contain a non-smi. |
271 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { | 260 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { |
272 test(value, Immediate(kSmiTagMask)); | 261 test(value, Immediate(kSmiTagMask)); |
273 j(not_zero, not_smi_label, not_taken); | 262 j(not_zero, not_smi_label, not_taken); |
274 } | 263 } |
275 | 264 |
276 // Assumes input is a heap object. | |
277 void JumpIfNotNumber(Register reg, TypeInfo info, Label* on_not_number); | |
278 | |
279 // Assumes input is a heap number. Jumps on things out of range. Also jumps | |
280 // on the min negative int32. Ignores frational parts. | |
281 void ConvertToInt32(Register dst, | |
282 Register src, // Can be the same as dst. | |
283 Register scratch, // Can be no_reg or dst, but not src. | |
284 TypeInfo info, | |
285 Label* on_not_int32); | |
286 | |
287 void LoadPowerOf2(XMMRegister dst, Register scratch, int power); | 265 void LoadPowerOf2(XMMRegister dst, Register scratch, int power); |
288 | 266 |
289 // Abort execution if argument is not a number. Used in debug code. | 267 // Abort execution if argument is not a number. Used in debug code. |
290 void AbortIfNotNumber(Register object); | 268 void AbortIfNotNumber(Register object); |
291 | 269 |
292 // Abort execution if argument is not a smi. Used in debug code. | 270 // Abort execution if argument is not a smi. Used in debug code. |
293 void AbortIfNotSmi(Register object); | 271 void AbortIfNotSmi(Register object); |
294 | 272 |
295 // Abort execution if argument is a smi. Used in debug code. | 273 // Abort execution if argument is a smi. Used in debug code. |
296 void AbortIfSmi(Register object); | 274 void AbortIfSmi(Register object); |
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755 } \ | 733 } \ |
756 masm-> | 734 masm-> |
757 #else | 735 #else |
758 #define ACCESS_MASM(masm) masm-> | 736 #define ACCESS_MASM(masm) masm-> |
759 #endif | 737 #endif |
760 | 738 |
761 | 739 |
762 } } // namespace v8::internal | 740 } } // namespace v8::internal |
763 | 741 |
764 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 742 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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