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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 // 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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377 b(eq, &done); | 377 b(eq, &done); |
378 mov(dst, Operand::Zero(), LeaveCC, mi); // 0 if negative. | 378 mov(dst, Operand::Zero(), LeaveCC, mi); // 0 if negative. |
379 mov(dst, Operand(satval), LeaveCC, pl); // satval if positive. | 379 mov(dst, Operand(satval), LeaveCC, pl); // satval if positive. |
380 bind(&done); | 380 bind(&done); |
381 } else { | 381 } else { |
382 usat(dst, satpos, src, cond); | 382 usat(dst, satpos, src, cond); |
383 } | 383 } |
384 } | 384 } |
385 | 385 |
386 | 386 |
387 void MacroAssembler::Load(Register dst, | |
388 const MemOperand& src, | |
389 Representation r) { | |
390 ASSERT(!r.IsDouble()); | |
391 if (r.IsInteger8()) { | |
392 ldrsb(dst, src); | |
393 } else if (r.IsUInteger8()) { | |
394 ldrb(dst, src); | |
395 } else if (r.IsInteger16()) { | |
396 ldrsh(dst, src); | |
397 } else if (r.IsUInteger16()) { | |
398 ldrh(dst, src); | |
399 } else { | |
400 ldr(dst, src); | |
401 } | |
402 } | |
403 | |
404 | |
405 void MacroAssembler::Store(Register src, | |
406 const MemOperand& dst, | |
407 Representation r) { | |
408 ASSERT(!r.IsDouble()); | |
409 if (r.IsInteger8() || r.IsUInteger8()) { | |
410 strb(src, dst); | |
411 } else if (r.IsInteger16() || r.IsUInteger16()) { | |
412 strh(src, dst); | |
413 } else { | |
414 str(src, dst); | |
415 } | |
416 } | |
417 | |
418 | |
419 void MacroAssembler::LoadRoot(Register destination, | 387 void MacroAssembler::LoadRoot(Register destination, |
420 Heap::RootListIndex index, | 388 Heap::RootListIndex index, |
421 Condition cond) { | 389 Condition cond) { |
422 if (CpuFeatures::IsSupported(MOVW_MOVT_IMMEDIATE_LOADS) && | 390 if (CpuFeatures::IsSupported(MOVW_MOVT_IMMEDIATE_LOADS) && |
423 isolate()->heap()->RootCanBeTreatedAsConstant(index) && | 391 isolate()->heap()->RootCanBeTreatedAsConstant(index) && |
424 !predictable_code_size()) { | 392 !predictable_code_size()) { |
425 // The CPU supports fast immediate values, and this root will never | 393 // The CPU supports fast immediate values, and this root will never |
426 // change. We will load it as a relocatable immediate value. | 394 // change. We will load it as a relocatable immediate value. |
427 Handle<Object> root(&isolate()->heap()->roots_array_start()[index]); | 395 Handle<Object> root(&isolate()->heap()->roots_array_start()[index]); |
428 mov(destination, Operand(root), LeaveCC, cond); | 396 mov(destination, Operand(root), LeaveCC, cond); |
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4050 void CodePatcher::EmitCondition(Condition cond) { | 4018 void CodePatcher::EmitCondition(Condition cond) { |
4051 Instr instr = Assembler::instr_at(masm_.pc_); | 4019 Instr instr = Assembler::instr_at(masm_.pc_); |
4052 instr = (instr & ~kCondMask) | cond; | 4020 instr = (instr & ~kCondMask) | cond; |
4053 masm_.emit(instr); | 4021 masm_.emit(instr); |
4054 } | 4022 } |
4055 | 4023 |
4056 | 4024 |
4057 } } // namespace v8::internal | 4025 } } // namespace v8::internal |
4058 | 4026 |
4059 #endif // V8_TARGET_ARCH_ARM | 4027 #endif // V8_TARGET_ARCH_ARM |
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