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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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| 268 | 268 |
| 269 void ClampUint8(Register reg); | 269 void ClampUint8(Register reg); |
| 270 | 270 |
| 271 void ClampDoubleToUint8(XMMRegister input_reg, | 271 void ClampDoubleToUint8(XMMRegister input_reg, |
| 272 XMMRegister scratch_reg, | 272 XMMRegister scratch_reg, |
| 273 Register result_reg); | 273 Register result_reg); |
| 274 | 274 |
| 275 | 275 |
| 276 // Smi tagging support. | 276 // Smi tagging support. |
| 277 void SmiTag(Register reg) { | 277 void SmiTag(Register reg) { |
| 278 ASSERT(kSmiTag == 0); | 278 STATIC_ASSERT(kSmiTag == 0); |
| 279 ASSERT(kSmiTagSize == 1); | 279 STATIC_ASSERT(kSmiTagSize == 1); |
| 280 add(reg, Operand(reg)); | 280 add(reg, Operand(reg)); |
| 281 } | 281 } |
| 282 void SmiUntag(Register reg) { | 282 void SmiUntag(Register reg) { |
| 283 sar(reg, kSmiTagSize); | 283 sar(reg, kSmiTagSize); |
| 284 } | 284 } |
| 285 | 285 |
| 286 // Modifies the register even if it does not contain a Smi! | 286 // Modifies the register even if it does not contain a Smi! |
| 287 void SmiUntag(Register reg, Label* is_smi) { | 287 void SmiUntag(Register reg, Label* is_smi) { |
| 288 ASSERT(kSmiTagSize == 1); | 288 STATIC_ASSERT(kSmiTagSize == 1); |
| 289 sar(reg, kSmiTagSize); | 289 sar(reg, kSmiTagSize); |
| 290 ASSERT(kSmiTag == 0); | 290 STATIC_ASSERT(kSmiTag == 0); |
| 291 j(not_carry, is_smi); | 291 j(not_carry, is_smi); |
| 292 } | 292 } |
| 293 | 293 |
| 294 // Jump the register contains a smi. | 294 // Jump the register contains a smi. |
| 295 inline void JumpIfSmi(Register value, | 295 inline void JumpIfSmi(Register value, |
| 296 Label* smi_label, | 296 Label* smi_label, |
| 297 Label::Distance distance = Label::kFar) { | 297 Label::Distance distance = Label::kFar) { |
| 298 test(value, Immediate(kSmiTagMask)); | 298 test(value, Immediate(kSmiTagMask)); |
| 299 j(zero, smi_label, distance); | 299 j(zero, smi_label, distance); |
| 300 } | 300 } |
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| 799 } \ | 799 } \ |
| 800 masm-> | 800 masm-> |
| 801 #else | 801 #else |
| 802 #define ACCESS_MASM(masm) masm-> | 802 #define ACCESS_MASM(masm) masm-> |
| 803 #endif | 803 #endif |
| 804 | 804 |
| 805 | 805 |
| 806 } } // namespace v8::internal | 806 } } // namespace v8::internal |
| 807 | 807 |
| 808 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 808 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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