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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_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
6 | 6 |
7 // Note on Mips implementation: | 7 // Note on Mips implementation: |
8 // | 8 // |
9 // The result_register() for mips is the 'v0' register, which is defined | 9 // The result_register() for mips is the 'v0' register, which is defined |
10 // by the ABI to contain function return values. However, the first | 10 // by the ABI to contain function return values. However, the first |
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4269 __ Mul(scratch3, scratch2, array_length, scratch1); | 4269 __ Mul(scratch3, scratch2, array_length, scratch1); |
4270 // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are | 4270 // Check for smi overflow. No overflow if higher 33 bits of 64-bit result are |
4271 // zero. | 4271 // zero. |
4272 __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); | 4272 __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); |
4273 __ And(scratch3, scratch2, Operand(0x80000000)); | 4273 __ And(scratch3, scratch2, Operand(0x80000000)); |
4274 __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); | 4274 __ Branch(&bailout, ne, scratch3, Operand(zero_reg)); |
4275 __ AdduAndCheckForOverflow(string_length, string_length, scratch2, scratch3); | 4275 __ AdduAndCheckForOverflow(string_length, string_length, scratch2, scratch3); |
4276 __ BranchOnOverflow(&bailout, scratch3); | 4276 __ BranchOnOverflow(&bailout, scratch3); |
4277 __ SmiUntag(string_length); | 4277 __ SmiUntag(string_length); |
4278 | 4278 |
| 4279 // Bailout for large object allocations. |
| 4280 __ Branch(&bailout, gt, string_length, |
| 4281 Operand(Page::kMaxRegularHeapObjectSize)); |
| 4282 |
4279 // Get first element in the array to free up the elements register to be used | 4283 // Get first element in the array to free up the elements register to be used |
4280 // for the result. | 4284 // for the result. |
4281 __ Addu(element, | 4285 __ Addu(element, |
4282 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); | 4286 elements, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
4283 result = elements; // End of live range for elements. | 4287 result = elements; // End of live range for elements. |
4284 elements = no_reg; | 4288 elements = no_reg; |
4285 // Live values in registers: | 4289 // Live values in registers: |
4286 // element: First array element | 4290 // element: First array element |
4287 // separator: Separator string | 4291 // separator: Separator string |
4288 // string_length: Length of result string (not smi) | 4292 // string_length: Length of result string (not smi) |
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5256 reinterpret_cast<uint32_t>( | 5260 reinterpret_cast<uint32_t>( |
5257 isolate->builtins()->OsrAfterStackCheck()->entry())); | 5261 isolate->builtins()->OsrAfterStackCheck()->entry())); |
5258 return OSR_AFTER_STACK_CHECK; | 5262 return OSR_AFTER_STACK_CHECK; |
5259 } | 5263 } |
5260 | 5264 |
5261 | 5265 |
5262 } // namespace internal | 5266 } // namespace internal |
5263 } // namespace v8 | 5267 } // namespace v8 |
5264 | 5268 |
5265 #endif // V8_TARGET_ARCH_MIPS | 5269 #endif // V8_TARGET_ARCH_MIPS |
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