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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #if V8_TARGET_ARCH_IA32 | 5 #if V8_TARGET_ARCH_IA32 |
| 6 | 6 |
| 7 #include "src/base/bits.h" | 7 #include "src/base/bits.h" |
| 8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
| 9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
| 10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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| 268 __ neg(ecx); | 268 __ neg(ecx); |
| 269 if (stash_exponent_copy) { | 269 if (stash_exponent_copy) { |
| 270 __ mov(result_reg, MemOperand(esp, 0)); | 270 __ mov(result_reg, MemOperand(esp, 0)); |
| 271 } else { | 271 } else { |
| 272 __ mov(result_reg, exponent_operand); | 272 __ mov(result_reg, exponent_operand); |
| 273 } | 273 } |
| 274 __ and_(result_reg, | 274 __ and_(result_reg, |
| 275 Immediate(static_cast<uint32_t>(Double::kSignificandMask >> 32))); | 275 Immediate(static_cast<uint32_t>(Double::kSignificandMask >> 32))); |
| 276 __ add(result_reg, | 276 __ add(result_reg, |
| 277 Immediate(static_cast<uint32_t>(Double::kHiddenBit >> 32))); | 277 Immediate(static_cast<uint32_t>(Double::kHiddenBit >> 32))); |
| 278 __ shrd(result_reg, scratch1); | 278 __ shrd_cl(scratch1, result_reg); |
| 279 __ shr_cl(result_reg); | 279 __ shr_cl(result_reg); |
| 280 __ test(ecx, Immediate(32)); | 280 __ test(ecx, Immediate(32)); |
| 281 __ cmov(not_equal, scratch1, result_reg); | 281 __ cmov(not_equal, scratch1, result_reg); |
| 282 } | 282 } |
| 283 | 283 |
| 284 // If the double was negative, negate the integer result. | 284 // If the double was negative, negate the integer result. |
| 285 __ bind(&check_negative); | 285 __ bind(&check_negative); |
| 286 __ mov(result_reg, scratch1); | 286 __ mov(result_reg, scratch1); |
| 287 __ neg(result_reg); | 287 __ neg(result_reg); |
| 288 if (stash_exponent_copy) { | 288 if (stash_exponent_copy) { |
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| 5902 return_value_operand, NULL); | 5902 return_value_operand, NULL); |
| 5903 } | 5903 } |
| 5904 | 5904 |
| 5905 | 5905 |
| 5906 #undef __ | 5906 #undef __ |
| 5907 | 5907 |
| 5908 } // namespace internal | 5908 } // namespace internal |
| 5909 } // namespace v8 | 5909 } // namespace v8 |
| 5910 | 5910 |
| 5911 #endif // V8_TARGET_ARCH_IA32 | 5911 #endif // V8_TARGET_ARCH_IA32 |
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