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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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2380 STATIC_ASSERT(kAsciiStringTag != 0); | 2380 STATIC_ASSERT(kAsciiStringTag != 0); |
2381 __ testb(result, Immediate(kStringEncodingMask)); | 2381 __ testb(result, Immediate(kStringEncodingMask)); |
2382 __ j(not_zero, &ascii_string); | 2382 __ j(not_zero, &ascii_string); |
2383 | 2383 |
2384 // Two-byte string. | 2384 // Two-byte string. |
2385 // Load the two-byte character code into the result register. | 2385 // Load the two-byte character code into the result register. |
2386 STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); | 2386 STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize == 1); |
2387 if (instr->index()->IsConstantOperand()) { | 2387 if (instr->index()->IsConstantOperand()) { |
2388 __ movzxwl(result, | 2388 __ movzxwl(result, |
2389 FieldOperand(string, | 2389 FieldOperand(string, |
2390 SeqTwoByteString::kHeaderSize + | 2390 SeqTwoByteString::kHeaderSize + |
2391 (kUC16Size * const_index))); | 2391 (kUC16Size * const_index))); |
2392 } else { | 2392 } else { |
2393 __ movzxwl(result, FieldOperand(string, | 2393 __ movzxwl(result, FieldOperand(string, |
2394 index, | 2394 index, |
2395 times_2, | 2395 times_2, |
2396 SeqTwoByteString::kHeaderSize)); | 2396 SeqTwoByteString::kHeaderSize)); |
2397 } | 2397 } |
2398 __ jmp(&done); | 2398 __ jmp(&done); |
2399 | 2399 |
2400 // ASCII string. | 2400 // ASCII string. |
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3057 RegisterEnvironmentForDeoptimization(environment); | 3057 RegisterEnvironmentForDeoptimization(environment); |
3058 ASSERT(osr_pc_offset_ == -1); | 3058 ASSERT(osr_pc_offset_ == -1); |
3059 osr_pc_offset_ = masm()->pc_offset(); | 3059 osr_pc_offset_ = masm()->pc_offset(); |
3060 } | 3060 } |
3061 | 3061 |
3062 #undef __ | 3062 #undef __ |
3063 | 3063 |
3064 } } // namespace v8::internal | 3064 } } // namespace v8::internal |
3065 | 3065 |
3066 #endif // V8_TARGET_ARCH_X64 | 3066 #endif // V8_TARGET_ARCH_X64 |
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