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Issue 10832342: Rename "global context" to "native context", (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 4 months ago
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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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3358 3358
3359 DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); 3359 DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr);
3360 // Having marked this instruction as a call we can use any 3360 // Having marked this instruction as a call we can use any
3361 // registers. 3361 // registers.
3362 ASSERT(ToDoubleRegister(instr->result()).is(f0)); 3362 ASSERT(ToDoubleRegister(instr->result()).is(f0));
3363 ASSERT(ToRegister(instr->InputAt(0)).is(a0)); 3363 ASSERT(ToRegister(instr->InputAt(0)).is(a0));
3364 3364
3365 static const int kSeedSize = sizeof(uint32_t); 3365 static const int kSeedSize = sizeof(uint32_t);
3366 STATIC_ASSERT(kPointerSize == kSeedSize); 3366 STATIC_ASSERT(kPointerSize == kSeedSize);
3367 3367
3368 __ lw(a0, FieldMemOperand(a0, GlobalObject::kGlobalContextOffset)); 3368 __ lw(a0, FieldMemOperand(a0, GlobalObject::kNativeContextOffset));
3369 static const int kRandomSeedOffset = 3369 static const int kRandomSeedOffset =
3370 FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize; 3370 FixedArray::kHeaderSize + Context::RANDOM_SEED_INDEX * kPointerSize;
3371 __ lw(a2, FieldMemOperand(a0, kRandomSeedOffset)); 3371 __ lw(a2, FieldMemOperand(a0, kRandomSeedOffset));
3372 // a2: FixedArray of the global context's random seeds 3372 // a2: FixedArray of the native context's random seeds
3373 3373
3374 // Load state[0]. 3374 // Load state[0].
3375 __ lw(a1, FieldMemOperand(a2, ByteArray::kHeaderSize)); 3375 __ lw(a1, FieldMemOperand(a2, ByteArray::kHeaderSize));
3376 __ Branch(deferred->entry(), eq, a1, Operand(zero_reg)); 3376 __ Branch(deferred->entry(), eq, a1, Operand(zero_reg));
3377 // Load state[1]. 3377 // Load state[1].
3378 __ lw(a0, FieldMemOperand(a2, ByteArray::kHeaderSize + kSeedSize)); 3378 __ lw(a0, FieldMemOperand(a2, ByteArray::kHeaderSize + kSeedSize));
3379 // a1: state[0]. 3379 // a1: state[0].
3380 // a0: state[1]. 3380 // a0: state[1].
3381 3381
3382 // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16) 3382 // state[0] = 18273 * (state[0] & 0xFFFF) + (state[0] >> 16)
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5328 __ Subu(scratch, result, scratch); 5328 __ Subu(scratch, result, scratch);
5329 __ lw(result, FieldMemOperand(scratch, 5329 __ lw(result, FieldMemOperand(scratch,
5330 FixedArray::kHeaderSize - kPointerSize)); 5330 FixedArray::kHeaderSize - kPointerSize));
5331 __ bind(&done); 5331 __ bind(&done);
5332 } 5332 }
5333 5333
5334 5334
5335 #undef __ 5335 #undef __
5336 5336
5337 } } // namespace v8::internal 5337 } } // namespace v8::internal
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