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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 106 | 106 |
| 107 void VirtualFrame::AllocateStackSlots() { | 107 void VirtualFrame::AllocateStackSlots() { |
| 108 int count = local_count(); | 108 int count = local_count(); |
| 109 if (count > 0) { | 109 if (count > 0) { |
| 110 Comment cmnt(masm(), "[ Allocate space for locals"); | 110 Comment cmnt(masm(), "[ Allocate space for locals"); |
| 111 // The locals are initialized to a constant (the undefined value), but | 111 // The locals are initialized to a constant (the undefined value), but |
| 112 // we sync them with the actual frame to allocate space for spilling | 112 // we sync them with the actual frame to allocate space for spilling |
| 113 // them later. First sync everything above the stack pointer so we can | 113 // them later. First sync everything above the stack pointer so we can |
| 114 // use pushes to allocate and initialize the locals. | 114 // use pushes to allocate and initialize the locals. |
| 115 SyncRange(stack_pointer_ + 1, element_count() - 1); | 115 SyncRange(stack_pointer_ + 1, element_count() - 1); |
| 116 Handle<Object> undefined = Factory::undefined_value(); | 116 Handle<Object> undefined = FACTORY->undefined_value(); |
| 117 FrameElement initial_value = | 117 FrameElement initial_value = |
| 118 FrameElement::ConstantElement(undefined, FrameElement::SYNCED); | 118 FrameElement::ConstantElement(undefined, FrameElement::SYNCED); |
| 119 if (count < kLocalVarBound) { | 119 if (count < kLocalVarBound) { |
| 120 // For fewer locals the unrolled loop is more compact. | 120 // For fewer locals the unrolled loop is more compact. |
| 121 | 121 |
| 122 // Hope for one of the first eight registers, where the push operation | 122 // Hope for one of the first eight registers, where the push operation |
| 123 // takes only one byte (kScratchRegister needs the REX.W bit). | 123 // takes only one byte (kScratchRegister needs the REX.W bit). |
| 124 Result tmp = cgen()->allocator()->Allocate(); | 124 Result tmp = cgen()->allocator()->Allocate(); |
| 125 ASSERT(tmp.is_valid()); | 125 ASSERT(tmp.is_valid()); |
| 126 __ movq(tmp.reg(), undefined, RelocInfo::EMBEDDED_OBJECT); | 126 __ movq(tmp.reg(), undefined, RelocInfo::EMBEDDED_OBJECT); |
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| 1012 while (i <= end) { | 1012 while (i <= end) { |
| 1013 SyncElementByPushing(i); | 1013 SyncElementByPushing(i); |
| 1014 i++; | 1014 i++; |
| 1015 } | 1015 } |
| 1016 } | 1016 } |
| 1017 | 1017 |
| 1018 | 1018 |
| 1019 //------------------------------------------------------------------------------ | 1019 //------------------------------------------------------------------------------ |
| 1020 // Virtual frame stub and IC calling functions. | 1020 // Virtual frame stub and IC calling functions. |
| 1021 | 1021 |
| 1022 Result VirtualFrame::CallRuntime(Runtime::Function* f, int arg_count) { | 1022 Result VirtualFrame::CallRuntime(const Runtime::Function* f, int arg_count) { |
| 1023 PrepareForCall(arg_count, arg_count); | 1023 PrepareForCall(arg_count, arg_count); |
| 1024 ASSERT(cgen()->HasValidEntryRegisters()); | 1024 ASSERT(cgen()->HasValidEntryRegisters()); |
| 1025 __ CallRuntime(f, arg_count); | 1025 __ CallRuntime(f, arg_count); |
| 1026 Result result = cgen()->allocator()->Allocate(rax); | 1026 Result result = cgen()->allocator()->Allocate(rax); |
| 1027 ASSERT(result.is_valid()); | 1027 ASSERT(result.is_valid()); |
| 1028 return result; | 1028 return result; |
| 1029 } | 1029 } |
| 1030 | 1030 |
| 1031 | 1031 |
| 1032 Result VirtualFrame::CallRuntime(Runtime::FunctionId id, int arg_count) { | 1032 Result VirtualFrame::CallRuntime(Runtime::FunctionId id, int arg_count) { |
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| 1108 a->ToRegister(a_reg); | 1108 a->ToRegister(a_reg); |
| 1109 } | 1109 } |
| 1110 a->Unuse(); | 1110 a->Unuse(); |
| 1111 b->Unuse(); | 1111 b->Unuse(); |
| 1112 } | 1112 } |
| 1113 | 1113 |
| 1114 | 1114 |
| 1115 Result VirtualFrame::CallLoadIC(RelocInfo::Mode mode) { | 1115 Result VirtualFrame::CallLoadIC(RelocInfo::Mode mode) { |
| 1116 // Name and receiver are on the top of the frame. Both are dropped. | 1116 // Name and receiver are on the top of the frame. Both are dropped. |
| 1117 // The IC expects name in rcx and receiver in rax. | 1117 // The IC expects name in rcx and receiver in rax. |
| 1118 Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); | 1118 Handle<Code> ic(Isolate::Current()->builtins()->builtin( |
| 1119 Builtins::LoadIC_Initialize)); |
| 1119 Result name = Pop(); | 1120 Result name = Pop(); |
| 1120 Result receiver = Pop(); | 1121 Result receiver = Pop(); |
| 1121 PrepareForCall(0, 0); | 1122 PrepareForCall(0, 0); |
| 1122 MoveResultsToRegisters(&name, &receiver, rcx, rax); | 1123 MoveResultsToRegisters(&name, &receiver, rcx, rax); |
| 1123 | 1124 |
| 1124 return RawCallCodeObject(ic, mode); | 1125 return RawCallCodeObject(ic, mode); |
| 1125 } | 1126 } |
| 1126 | 1127 |
| 1127 | 1128 |
| 1128 Result VirtualFrame::CallKeyedLoadIC(RelocInfo::Mode mode) { | 1129 Result VirtualFrame::CallKeyedLoadIC(RelocInfo::Mode mode) { |
| 1129 // Key and receiver are on top of the frame. Put them in rax and rdx. | 1130 // Key and receiver are on top of the frame. Put them in rax and rdx. |
| 1130 Result key = Pop(); | 1131 Result key = Pop(); |
| 1131 Result receiver = Pop(); | 1132 Result receiver = Pop(); |
| 1132 PrepareForCall(0, 0); | 1133 PrepareForCall(0, 0); |
| 1133 MoveResultsToRegisters(&key, &receiver, rax, rdx); | 1134 MoveResultsToRegisters(&key, &receiver, rax, rdx); |
| 1134 | 1135 |
| 1135 Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); | 1136 Handle<Code> ic(Isolate::Current()->builtins()->builtin( |
| 1137 Builtins::KeyedLoadIC_Initialize)); |
| 1136 return RawCallCodeObject(ic, mode); | 1138 return RawCallCodeObject(ic, mode); |
| 1137 } | 1139 } |
| 1138 | 1140 |
| 1139 | 1141 |
| 1140 Result VirtualFrame::CallStoreIC(Handle<String> name, | 1142 Result VirtualFrame::CallStoreIC(Handle<String> name, |
| 1141 bool is_contextual, | 1143 bool is_contextual, |
| 1142 StrictModeFlag strict_mode) { | 1144 StrictModeFlag strict_mode) { |
| 1143 // Value and (if not contextual) receiver are on top of the frame. | 1145 // Value and (if not contextual) receiver are on top of the frame. |
| 1144 // The IC expects name in rcx, value in rax, and receiver in rdx. | 1146 // The IC expects name in rcx, value in rax, and receiver in rdx. |
| 1145 Handle<Code> ic(Builtins::builtin( | 1147 Handle<Code> ic(Isolate::Current()->builtins()->builtin( |
| 1146 (strict_mode == kStrictMode) ? Builtins::StoreIC_Initialize_Strict | 1148 (strict_mode == kStrictMode) ? Builtins::StoreIC_Initialize_Strict |
| 1147 : Builtins::StoreIC_Initialize)); | 1149 : Builtins::StoreIC_Initialize)); |
| 1148 Result value = Pop(); | 1150 Result value = Pop(); |
| 1149 RelocInfo::Mode mode; | 1151 RelocInfo::Mode mode; |
| 1150 if (is_contextual) { | 1152 if (is_contextual) { |
| 1151 PrepareForCall(0, 0); | 1153 PrepareForCall(0, 0); |
| 1152 value.ToRegister(rax); | 1154 value.ToRegister(rax); |
| 1153 __ movq(rdx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); | 1155 __ movq(rdx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 1154 value.Unuse(); | 1156 value.Unuse(); |
| 1155 mode = RelocInfo::CODE_TARGET_CONTEXT; | 1157 mode = RelocInfo::CODE_TARGET_CONTEXT; |
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| 1201 __ xchg(rax, rcx); | 1203 __ xchg(rax, rcx); |
| 1202 } else { | 1204 } else { |
| 1203 __ xchg(rax, rcx); | 1205 __ xchg(rax, rcx); |
| 1204 __ xchg(rax, rdx); | 1206 __ xchg(rax, rdx); |
| 1205 } | 1207 } |
| 1206 value.Unuse(); | 1208 value.Unuse(); |
| 1207 key.Unuse(); | 1209 key.Unuse(); |
| 1208 receiver.Unuse(); | 1210 receiver.Unuse(); |
| 1209 } | 1211 } |
| 1210 | 1212 |
| 1211 Handle<Code> ic(Builtins::builtin( | 1213 Handle<Code> ic(Isolate::Current()->builtins()->builtin( |
| 1212 (strict_mode == kStrictMode) ? Builtins::KeyedStoreIC_Initialize_Strict | 1214 (strict_mode == kStrictMode) ? Builtins::KeyedStoreIC_Initialize_Strict |
| 1213 : Builtins::KeyedStoreIC_Initialize)); | 1215 : Builtins::KeyedStoreIC_Initialize)); |
| 1214 return RawCallCodeObject(ic, RelocInfo::CODE_TARGET); | 1216 return RawCallCodeObject(ic, RelocInfo::CODE_TARGET); |
| 1215 } | 1217 } |
| 1216 | 1218 |
| 1217 | 1219 |
| 1218 Result VirtualFrame::CallCallIC(RelocInfo::Mode mode, | 1220 Result VirtualFrame::CallCallIC(RelocInfo::Mode mode, |
| 1219 int arg_count, | 1221 int arg_count, |
| 1220 int loop_nesting) { | 1222 int loop_nesting) { |
| 1221 // Function name, arguments, and receiver are found on top of the frame | 1223 // Function name, arguments, and receiver are found on top of the frame |
| 1222 // and dropped by the call. The IC expects the name in rcx and the rest | 1224 // and dropped by the call. The IC expects the name in rcx and the rest |
| 1223 // on the stack, and drops them all. | 1225 // on the stack, and drops them all. |
| 1224 InLoopFlag in_loop = loop_nesting > 0 ? IN_LOOP : NOT_IN_LOOP; | 1226 InLoopFlag in_loop = loop_nesting > 0 ? IN_LOOP : NOT_IN_LOOP; |
| 1225 Handle<Code> ic = StubCache::ComputeCallInitialize(arg_count, in_loop); | 1227 Handle<Code> ic = |
| 1228 ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop); |
| 1226 Result name = Pop(); | 1229 Result name = Pop(); |
| 1227 // Spill args, receiver, and function. The call will drop args and | 1230 // Spill args, receiver, and function. The call will drop args and |
| 1228 // receiver. | 1231 // receiver. |
| 1229 PrepareForCall(arg_count + 1, arg_count + 1); | 1232 PrepareForCall(arg_count + 1, arg_count + 1); |
| 1230 name.ToRegister(rcx); | 1233 name.ToRegister(rcx); |
| 1231 name.Unuse(); | 1234 name.Unuse(); |
| 1232 return RawCallCodeObject(ic, mode); | 1235 return RawCallCodeObject(ic, mode); |
| 1233 } | 1236 } |
| 1234 | 1237 |
| 1235 | 1238 |
| 1236 Result VirtualFrame::CallKeyedCallIC(RelocInfo::Mode mode, | 1239 Result VirtualFrame::CallKeyedCallIC(RelocInfo::Mode mode, |
| 1237 int arg_count, | 1240 int arg_count, |
| 1238 int loop_nesting) { | 1241 int loop_nesting) { |
| 1239 // Function name, arguments, and receiver are found on top of the frame | 1242 // Function name, arguments, and receiver are found on top of the frame |
| 1240 // and dropped by the call. The IC expects the name in rcx and the rest | 1243 // and dropped by the call. The IC expects the name in rcx and the rest |
| 1241 // on the stack, and drops them all. | 1244 // on the stack, and drops them all. |
| 1242 InLoopFlag in_loop = loop_nesting > 0 ? IN_LOOP : NOT_IN_LOOP; | 1245 InLoopFlag in_loop = loop_nesting > 0 ? IN_LOOP : NOT_IN_LOOP; |
| 1243 Handle<Code> ic = | 1246 Handle<Code> ic = |
| 1244 StubCache::ComputeKeyedCallInitialize(arg_count, in_loop); | 1247 ISOLATE->stub_cache()->ComputeKeyedCallInitialize(arg_count, in_loop); |
| 1245 Result name = Pop(); | 1248 Result name = Pop(); |
| 1246 // Spill args, receiver, and function. The call will drop args and | 1249 // Spill args, receiver, and function. The call will drop args and |
| 1247 // receiver. | 1250 // receiver. |
| 1248 PrepareForCall(arg_count + 1, arg_count + 1); | 1251 PrepareForCall(arg_count + 1, arg_count + 1); |
| 1249 name.ToRegister(rcx); | 1252 name.ToRegister(rcx); |
| 1250 name.Unuse(); | 1253 name.Unuse(); |
| 1251 return RawCallCodeObject(ic, mode); | 1254 return RawCallCodeObject(ic, mode); |
| 1252 } | 1255 } |
| 1253 | 1256 |
| 1254 | 1257 |
| 1255 Result VirtualFrame::CallConstructor(int arg_count) { | 1258 Result VirtualFrame::CallConstructor(int arg_count) { |
| 1256 // Arguments, receiver, and function are on top of the frame. The | 1259 // Arguments, receiver, and function are on top of the frame. The |
| 1257 // IC expects arg count in rax, function in rdi, and the arguments | 1260 // IC expects arg count in rax, function in rdi, and the arguments |
| 1258 // and receiver on the stack. | 1261 // and receiver on the stack. |
| 1259 Handle<Code> ic(Builtins::builtin(Builtins::JSConstructCall)); | 1262 Handle<Code> ic(Isolate::Current()->builtins()->builtin( |
| 1263 Builtins::JSConstructCall)); |
| 1260 // Duplicate the function before preparing the frame. | 1264 // Duplicate the function before preparing the frame. |
| 1261 PushElementAt(arg_count); | 1265 PushElementAt(arg_count); |
| 1262 Result function = Pop(); | 1266 Result function = Pop(); |
| 1263 PrepareForCall(arg_count + 1, arg_count + 1); // Spill function and args. | 1267 PrepareForCall(arg_count + 1, arg_count + 1); // Spill function and args. |
| 1264 function.ToRegister(rdi); | 1268 function.ToRegister(rdi); |
| 1265 | 1269 |
| 1266 // Constructors are called with the number of arguments in register | 1270 // Constructors are called with the number of arguments in register |
| 1267 // rax for now. Another option would be to have separate construct | 1271 // rax for now. Another option would be to have separate construct |
| 1268 // call trampolines per different arguments counts encountered. | 1272 // call trampolines per different arguments counts encountered. |
| 1269 Result num_args = cgen()->allocator()->Allocate(rax); | 1273 Result num_args = cgen()->allocator()->Allocate(rax); |
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| 1283 Adjust(kHandlerSize - 1); | 1287 Adjust(kHandlerSize - 1); |
| 1284 __ PushTryHandler(IN_JAVASCRIPT, type); | 1288 __ PushTryHandler(IN_JAVASCRIPT, type); |
| 1285 } | 1289 } |
| 1286 | 1290 |
| 1287 | 1291 |
| 1288 #undef __ | 1292 #undef __ |
| 1289 | 1293 |
| 1290 } } // namespace v8::internal | 1294 } } // namespace v8::internal |
| 1291 | 1295 |
| 1292 #endif // V8_TARGET_ARCH_X64 | 1296 #endif // V8_TARGET_ARCH_X64 |
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