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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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121 #else | 121 #else |
122 // set lr for return at current pc + 8 | 122 // set lr for return at current pc + 8 |
123 mov(lr, Operand(pc), LeaveCC, cond); | 123 mov(lr, Operand(pc), LeaveCC, cond); |
124 mov(pc, Operand(target), LeaveCC, cond); | 124 mov(pc, Operand(target), LeaveCC, cond); |
125 #endif | 125 #endif |
126 } | 126 } |
127 | 127 |
128 | 128 |
129 void MacroAssembler::Call(intptr_t target, RelocInfo::Mode rmode, | 129 void MacroAssembler::Call(intptr_t target, RelocInfo::Mode rmode, |
130 Condition cond) { | 130 Condition cond) { |
131 #if !defined(__arm__) | |
132 if (rmode == RelocInfo::RUNTIME_ENTRY) { | |
133 mov(r2, Operand(target, rmode), LeaveCC, cond); | |
134 // Set lr for return at current pc + 8. | |
135 mov(lr, Operand(pc), LeaveCC, cond); | |
136 // Emit a ldr<cond> pc, [pc + offset of target in constant pool]. | |
137 // Notify the simulator of the transition to C code. | |
138 swi(assembler::arm::call_rt_r2); | |
139 } else { | |
140 // set lr for return at current pc + 8 | |
141 mov(lr, Operand(pc), LeaveCC, cond); | |
142 // emit a ldr<cond> pc, [pc + offset of target in constant pool] | |
143 mov(pc, Operand(target, rmode), LeaveCC, cond); | |
144 } | |
145 #else | |
146 // Set lr for return at current pc + 8. | 131 // Set lr for return at current pc + 8. |
147 mov(lr, Operand(pc), LeaveCC, cond); | 132 mov(lr, Operand(pc), LeaveCC, cond); |
148 // Emit a ldr<cond> pc, [pc + offset of target in constant pool]. | 133 // Emit a ldr<cond> pc, [pc + offset of target in constant pool]. |
149 mov(pc, Operand(target, rmode), LeaveCC, cond); | 134 mov(pc, Operand(target, rmode), LeaveCC, cond); |
150 #endif // !defined(__arm__) | |
151 // If USE_BLX is defined, we could emit a 'mov ip, target', followed by a | 135 // If USE_BLX is defined, we could emit a 'mov ip, target', followed by a |
152 // 'blx ip'; however, the code would not be shorter than the above sequence | 136 // 'blx ip'; however, the code would not be shorter than the above sequence |
153 // and the target address of the call would be referenced by the first | 137 // and the target address of the call would be referenced by the first |
154 // instruction rather than the second one, which would make it harder to patch | 138 // instruction rather than the second one, which would make it harder to patch |
155 // (two instructions before the return address, instead of one). | 139 // (two instructions before the return address, instead of one). |
156 ASSERT(kTargetAddrToReturnAddrDist == sizeof(Instr)); | 140 ASSERT(kTargetAddrToReturnAddrDist == sizeof(Instr)); |
157 } | 141 } |
158 | 142 |
159 | 143 |
160 void MacroAssembler::Call(byte* target, RelocInfo::Mode rmode, | 144 void MacroAssembler::Call(byte* target, RelocInfo::Mode rmode, |
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950 #endif | 934 #endif |
951 mov(r0, Operand(p0)); | 935 mov(r0, Operand(p0)); |
952 push(r0); | 936 push(r0); |
953 mov(r0, Operand(Smi::FromInt(p1 - p0))); | 937 mov(r0, Operand(Smi::FromInt(p1 - p0))); |
954 push(r0); | 938 push(r0); |
955 CallRuntime(Runtime::kAbort, 2); | 939 CallRuntime(Runtime::kAbort, 2); |
956 // will not return here | 940 // will not return here |
957 } | 941 } |
958 | 942 |
959 } } // namespace v8::internal | 943 } } // namespace v8::internal |
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