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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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107 | 107 |
108 | 108 |
109 // Check if object is in new space. | 109 // Check if object is in new space. |
110 // scratch can be object itself, but it will be clobbered. | 110 // scratch can be object itself, but it will be clobbered. |
111 void InNewSpace(Register object, | 111 void InNewSpace(Register object, |
112 Register scratch, | 112 Register scratch, |
113 Condition cc, // eq for new space, ne otherwise | 113 Condition cc, // eq for new space, ne otherwise |
114 Label* branch); | 114 Label* branch); |
115 | 115 |
116 | 116 |
117 // Set the remebered set bit for an offset into an | 117 // For the page containing |object| mark the region covering [object+offset] |
118 // object. RecordWriteHelper only works if the object is not in new | 118 // dirty. The object address must be in the first 8K of an allocated page. |
119 // space. | |
120 void RecordWriteHelper(Register object, Register offset, Register scracth); | 119 void RecordWriteHelper(Register object, Register offset, Register scracth); |
121 | 120 |
122 // Sets the remembered set bit for [address+offset], where address is the | 121 // For the page containing |object| mark the region covering [object+offset] |
123 // address of the heap object 'object'. The address must be in the first 8K | 122 // dirty. The object address must be in the first 8K of an allocated page. |
124 // of an allocated page. The 'scratch' register is used in the | 123 // The 'scratch' register is used in the implementation and all 3 registers |
125 // implementation and all 3 registers are clobbered by the operation, as | 124 // are clobbered by the operation, as well as the ip register. |
126 // well as the ip register. | |
127 void RecordWrite(Register object, Register offset, Register scratch); | 125 void RecordWrite(Register object, Register offset, Register scratch); |
128 | 126 |
129 // Push two registers. Pushes leftmost register first (to highest address). | 127 // Push two registers. Pushes leftmost register first (to highest address). |
130 void Push(Register src1, Register src2, Condition cond = al) { | 128 void Push(Register src1, Register src2, Condition cond = al) { |
131 ASSERT(!src1.is(src2)); | 129 ASSERT(!src1.is(src2)); |
132 if (src1.code() > src2.code()) { | 130 if (src1.code() > src2.code()) { |
133 stm(db_w, sp, src1.bit() | src2.bit(), cond); | 131 stm(db_w, sp, src1.bit() | src2.bit(), cond); |
134 } else { | 132 } else { |
135 str(src1, MemOperand(sp, 4, NegPreIndex), cond); | 133 str(src1, MemOperand(sp, 4, NegPreIndex), cond); |
136 str(src2, MemOperand(sp, 4, NegPreIndex), cond); | 134 str(src2, MemOperand(sp, 4, NegPreIndex), cond); |
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657 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 655 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
658 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 656 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
659 #else | 657 #else |
660 #define ACCESS_MASM(masm) masm-> | 658 #define ACCESS_MASM(masm) masm-> |
661 #endif | 659 #endif |
662 | 660 |
663 | 661 |
664 } } // namespace v8::internal | 662 } } // namespace v8::internal |
665 | 663 |
666 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 664 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ |
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