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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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5043 } | 5043 } |
5044 | 5044 |
5045 | 5045 |
5046 void MacroAssembler::EmitSeqStringSetCharCheck(Register string, | 5046 void MacroAssembler::EmitSeqStringSetCharCheck(Register string, |
5047 Register index, | 5047 Register index, |
5048 Register value, | 5048 Register value, |
5049 Register scratch, | 5049 Register scratch, |
5050 uint32_t encoding_mask) { | 5050 uint32_t encoding_mask) { |
5051 Label is_object; | 5051 Label is_object; |
5052 SmiTst(string, at); | 5052 SmiTst(string, at); |
5053 ThrowIf(eq, kNonObject, at, Operand(zero_reg)); | 5053 Check(ne, kNonObject, at, Operand(zero_reg)); |
5054 | 5054 |
5055 lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); | 5055 lw(at, FieldMemOperand(string, HeapObject::kMapOffset)); |
5056 lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); | 5056 lbu(at, FieldMemOperand(at, Map::kInstanceTypeOffset)); |
5057 | 5057 |
5058 andi(at, at, kStringRepresentationMask | kStringEncodingMask); | 5058 andi(at, at, kStringRepresentationMask | kStringEncodingMask); |
5059 li(scratch, Operand(encoding_mask)); | 5059 li(scratch, Operand(encoding_mask)); |
5060 ThrowIf(ne, kUnexpectedStringType, at, Operand(scratch)); | 5060 Check(eq, kUnexpectedStringType, at, Operand(scratch)); |
5061 | 5061 |
5062 // The index is assumed to be untagged coming in, tag it to compare with the | 5062 // The index is assumed to be untagged coming in, tag it to compare with the |
5063 // string length without using a temp register, it is restored at the end of | 5063 // string length without using a temp register, it is restored at the end of |
5064 // this function. | 5064 // this function. |
5065 Label index_tag_ok, index_tag_bad; | 5065 Label index_tag_ok, index_tag_bad; |
5066 TrySmiTag(index, scratch, &index_tag_bad); | 5066 TrySmiTag(index, scratch, &index_tag_bad); |
5067 Branch(&index_tag_ok); | 5067 Branch(&index_tag_ok); |
5068 bind(&index_tag_bad); | 5068 bind(&index_tag_bad); |
5069 Throw(kIndexIsTooLarge); | 5069 Abort(kIndexIsTooLarge); |
5070 bind(&index_tag_ok); | 5070 bind(&index_tag_ok); |
5071 | 5071 |
5072 lw(at, FieldMemOperand(string, String::kLengthOffset)); | 5072 lw(at, FieldMemOperand(string, String::kLengthOffset)); |
5073 ThrowIf(ge, kIndexIsTooLarge, index, Operand(at)); | 5073 Check(lt, kIndexIsTooLarge, index, Operand(at)); |
5074 | 5074 |
5075 ASSERT(Smi::FromInt(0) == 0); | 5075 ASSERT(Smi::FromInt(0) == 0); |
5076 ThrowIf(lt, kIndexIsNegative, index, Operand(zero_reg)); | 5076 Check(ge, kIndexIsNegative, index, Operand(zero_reg)); |
5077 | 5077 |
5078 SmiUntag(index, index); | 5078 SmiUntag(index, index); |
5079 } | 5079 } |
5080 | 5080 |
5081 | 5081 |
5082 void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, | 5082 void MacroAssembler::PrepareCallCFunction(int num_reg_arguments, |
5083 int num_double_arguments, | 5083 int num_double_arguments, |
5084 Register scratch) { | 5084 Register scratch) { |
5085 int frame_alignment = ActivationFrameAlignment(); | 5085 int frame_alignment = ActivationFrameAlignment(); |
5086 | 5086 |
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5745 opcode == BGTZL); | 5745 opcode == BGTZL); |
5746 opcode = (cond == eq) ? BEQ : BNE; | 5746 opcode = (cond == eq) ? BEQ : BNE; |
5747 instr = (instr & ~kOpcodeMask) | opcode; | 5747 instr = (instr & ~kOpcodeMask) | opcode; |
5748 masm_.emit(instr); | 5748 masm_.emit(instr); |
5749 } | 5749 } |
5750 | 5750 |
5751 | 5751 |
5752 } } // namespace v8::internal | 5752 } } // namespace v8::internal |
5753 | 5753 |
5754 #endif // V8_TARGET_ARCH_MIPS | 5754 #endif // V8_TARGET_ARCH_MIPS |
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