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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 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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30 | 30 |
31 #include "cpu.h" | 31 #include "cpu.h" |
32 | 32 |
33 namespace v8 { namespace internal { | 33 namespace v8 { namespace internal { |
34 | 34 |
35 Condition NegateCondition(Condition cc) { | 35 Condition NegateCondition(Condition cc) { |
36 return static_cast<Condition>(cc ^ 1); | 36 return static_cast<Condition>(cc ^ 1); |
37 } | 37 } |
38 | 38 |
39 | 39 |
40 // ----------------------------------------------------------------------------- | |
41 // Implementation of Assembler | |
42 | |
43 #define EMIT(x) \ | |
44 *pc_++ = (x) | |
iposva
2009/05/22 15:50:23
Is there any particular reason why this has to be
| |
45 | |
46 | |
47 void Assembler::emit_rex_64(Register reg, Register rm_reg) { | |
48 EMIT(0x48 | (reg.code() & 0x8) >> 1 | rm_reg.code() >> 3); | |
49 } | |
50 | |
51 | |
52 void Assembler::emit_rex_64(Register reg, const Operand& op) { | |
53 EMIT(0x48 | (reg.code() & 0x8) >> 1 | op.rex_); | |
54 } | |
55 | |
56 | |
57 void Assembler::set_target_address_at(byte* location, byte* value) { | |
58 UNIMPLEMENTED(); | |
59 } | |
60 | |
61 | |
62 byte* Assembler::target_address_at(byte* location) { | |
63 UNIMPLEMENTED(); | |
64 return NULL; | |
65 } | |
66 | |
67 #undef EMIT | |
68 | |
69 | |
70 // ----------------------------------------------------------------------------- | |
71 // Implementation of RelocInfo | |
72 | |
40 // The modes possibly affected by apply must be in kApplyMask. | 73 // The modes possibly affected by apply must be in kApplyMask. |
41 void RelocInfo::apply(int delta) { | 74 void RelocInfo::apply(int delta) { |
42 if (rmode_ == RUNTIME_ENTRY || IsCodeTarget(rmode_)) { | 75 if (rmode_ == RUNTIME_ENTRY || IsCodeTarget(rmode_)) { |
43 intptr_t* p = reinterpret_cast<intptr_t*>(pc_); | 76 intptr_t* p = reinterpret_cast<intptr_t*>(pc_); |
44 *p -= delta; // relocate entry | 77 *p -= delta; // relocate entry |
45 } else if (rmode_ == JS_RETURN && IsCallInstruction()) { | 78 } else if (rmode_ == JS_RETURN && IsCallInstruction()) { |
46 // Special handling of js_return when a break point is set (call | 79 // Special handling of js_return when a break point is set (call |
47 // instruction has been inserted). | 80 // instruction has been inserted). |
48 intptr_t* p = reinterpret_cast<intptr_t*>(pc_ + 1); | 81 intptr_t* p = reinterpret_cast<intptr_t*>(pc_ + 1); |
49 *p -= delta; // relocate entry | 82 *p -= delta; // relocate entry |
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64 Address RelocInfo::target_address_address() { | 97 Address RelocInfo::target_address_address() { |
65 ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY); | 98 ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY); |
66 return reinterpret_cast<Address>(pc_); | 99 return reinterpret_cast<Address>(pc_); |
67 } | 100 } |
68 | 101 |
69 | 102 |
70 void RelocInfo::set_target_address(Address target) { | 103 void RelocInfo::set_target_address(Address target) { |
71 ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY); | 104 ASSERT(IsCodeTarget(rmode_) || rmode_ == RUNTIME_ENTRY); |
72 Assembler::set_target_address_at(pc_, target); | 105 Assembler::set_target_address_at(pc_, target); |
73 } | 106 } |
74 | |
75 | |
76 void Assembler::set_target_address_at(byte* location, byte* value) { | |
77 UNIMPLEMENTED(); | |
78 } | |
79 | |
80 | |
81 byte* Assembler::target_address_at(byte* location) { | |
82 UNIMPLEMENTED(); | |
83 return NULL; | |
84 } | |
85 | |
86 | |
87 Object* RelocInfo::target_object() { | 107 Object* RelocInfo::target_object() { |
88 ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); | 108 ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); |
89 return *reinterpret_cast<Object**>(pc_); | 109 return *reinterpret_cast<Object**>(pc_); |
90 } | 110 } |
91 | 111 |
92 | 112 |
93 Object** RelocInfo::target_object_address() { | 113 Object** RelocInfo::target_object_address() { |
94 ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); | 114 ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); |
95 return reinterpret_cast<Object**>(pc_); | 115 return reinterpret_cast<Object**>(pc_); |
96 } | 116 } |
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186 | 206 |
187 | 207 |
188 Operand::Operand(Register reg) { | 208 Operand::Operand(Register reg) { |
189 // reg | 209 // reg |
190 set_modrm(3, reg); | 210 set_modrm(3, reg); |
191 } | 211 } |
192 | 212 |
193 } } // namespace v8::internal | 213 } } // namespace v8::internal |
194 | 214 |
195 #endif // V8_X64_ASSEMBLER_X64_INL_H_ | 215 #endif // V8_X64_ASSEMBLER_X64_INL_H_ |
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