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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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251 } | 251 } |
252 | 252 |
253 // Modifies the register even if it does not contain a Smi! | 253 // Modifies the register even if it does not contain a Smi! |
254 void SmiUntag(Register reg, Label* is_smi) { | 254 void SmiUntag(Register reg, Label* is_smi) { |
255 ASSERT(kSmiTagSize == 1); | 255 ASSERT(kSmiTagSize == 1); |
256 sar(reg, kSmiTagSize); | 256 sar(reg, kSmiTagSize); |
257 ASSERT(kSmiTag == 0); | 257 ASSERT(kSmiTag == 0); |
258 j(not_carry, is_smi); | 258 j(not_carry, is_smi); |
259 } | 259 } |
260 | 260 |
| 261 // Jump the register contains a smi. |
| 262 inline void JumpIfSmi(Register value, Label* smi_label) { |
| 263 test(value, Immediate(kSmiTagMask)); |
| 264 j(zero, smi_label, not_taken); |
| 265 } |
| 266 // Jump if register contain a non-smi. |
| 267 inline void JumpIfNotSmi(Register value, Label* not_smi_label) { |
| 268 test(value, Immediate(kSmiTagMask)); |
| 269 j(not_zero, not_smi_label, not_taken); |
| 270 } |
| 271 |
261 // Assumes input is a heap object. | 272 // Assumes input is a heap object. |
262 void JumpIfNotNumber(Register reg, TypeInfo info, Label* on_not_number); | 273 void JumpIfNotNumber(Register reg, TypeInfo info, Label* on_not_number); |
263 | 274 |
264 // Assumes input is a heap number. Jumps on things out of range. Also jumps | 275 // Assumes input is a heap number. Jumps on things out of range. Also jumps |
265 // on the min negative int32. Ignores frational parts. | 276 // on the min negative int32. Ignores frational parts. |
266 void ConvertToInt32(Register dst, | 277 void ConvertToInt32(Register dst, |
267 Register src, // Can be the same as dst. | 278 Register src, // Can be the same as dst. |
268 Register scratch, // Can be no_reg or dst, but not src. | 279 Register scratch, // Can be no_reg or dst, but not src. |
269 TypeInfo info, | 280 TypeInfo info, |
270 Label* on_not_int32); | 281 Label* on_not_int32); |
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756 } \ | 767 } \ |
757 masm-> | 768 masm-> |
758 #else | 769 #else |
759 #define ACCESS_MASM(masm) masm-> | 770 #define ACCESS_MASM(masm) masm-> |
760 #endif | 771 #endif |
761 | 772 |
762 | 773 |
763 } } // namespace v8::internal | 774 } } // namespace v8::internal |
764 | 775 |
765 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 776 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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