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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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123 info_ = info; | 123 info_ = info; |
124 SetFunctionPosition(function()); | 124 SetFunctionPosition(function()); |
125 Comment cmnt(masm_, "[ function compiled by full code generator"); | 125 Comment cmnt(masm_, "[ function compiled by full code generator"); |
126 | 126 |
127 #ifdef DEBUG | 127 #ifdef DEBUG |
128 if (strlen(FLAG_stop_at) > 0 && | 128 if (strlen(FLAG_stop_at) > 0 && |
129 info->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { | 129 info->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { |
130 __ int3(); | 130 __ int3(); |
131 } | 131 } |
132 #endif | 132 #endif |
| 133 |
| 134 // Strict mode functions need to replace the receiver with undefined |
| 135 // when called as functions (without an explicit receiver |
| 136 // object). rcx is zero for method calls and non-zero for function |
| 137 // calls. |
| 138 if (info->is_strict_mode()) { |
| 139 Label ok; |
| 140 __ testq(rcx, rcx); |
| 141 __ j(zero, &ok, Label::kNear); |
| 142 // +1 for return address. |
| 143 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
| 144 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
| 145 __ movq(Operand(rsp, receiver_offset), kScratchRegister); |
| 146 __ bind(&ok); |
| 147 } |
| 148 |
133 __ push(rbp); // Caller's frame pointer. | 149 __ push(rbp); // Caller's frame pointer. |
134 __ movq(rbp, rsp); | 150 __ movq(rbp, rsp); |
135 __ push(rsi); // Callee's context. | 151 __ push(rsi); // Callee's context. |
136 __ push(rdi); // Callee's JS Function. | 152 __ push(rdi); // Callee's JS Function. |
137 | 153 |
138 { Comment cmnt(masm_, "[ Allocate locals"); | 154 { Comment cmnt(masm_, "[ Allocate locals"); |
139 int locals_count = scope()->num_stack_slots(); | 155 int locals_count = scope()->num_stack_slots(); |
140 if (locals_count == 1) { | 156 if (locals_count == 1) { |
141 __ PushRoot(Heap::kUndefinedValueRootIndex); | 157 __ PushRoot(Heap::kUndefinedValueRootIndex); |
142 } else if (locals_count > 1) { | 158 } else if (locals_count > 1) { |
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1997 for (int i = 0; i < arg_count; i++) { | 2013 for (int i = 0; i < arg_count; i++) { |
1998 VisitForStackValue(args->at(i)); | 2014 VisitForStackValue(args->at(i)); |
1999 } | 2015 } |
2000 __ Move(rcx, name); | 2016 __ Move(rcx, name); |
2001 } | 2017 } |
2002 // Record source position for debugger. | 2018 // Record source position for debugger. |
2003 SetSourcePosition(expr->position()); | 2019 SetSourcePosition(expr->position()); |
2004 // Call the IC initialization code. | 2020 // Call the IC initialization code. |
2005 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; | 2021 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
2006 Handle<Code> ic = | 2022 Handle<Code> ic = |
2007 ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop); | 2023 ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop, mode); |
2008 EmitCallIC(ic, mode, expr->id()); | 2024 EmitCallIC(ic, mode, expr->id()); |
2009 RecordJSReturnSite(expr); | 2025 RecordJSReturnSite(expr); |
2010 // Restore context register. | 2026 // Restore context register. |
2011 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); | 2027 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
2012 context()->Plug(rax); | 2028 context()->Plug(rax); |
2013 } | 2029 } |
2014 | 2030 |
2015 | 2031 |
2016 void FullCodeGenerator::EmitKeyedCallWithIC(Call* expr, | 2032 void FullCodeGenerator::EmitKeyedCallWithIC(Call* expr, |
2017 Expression* key, | 2033 Expression* key) { |
2018 RelocInfo::Mode mode) { | |
2019 // Load the key. | 2034 // Load the key. |
2020 VisitForAccumulatorValue(key); | 2035 VisitForAccumulatorValue(key); |
2021 | 2036 |
2022 // Swap the name of the function and the receiver on the stack to follow | 2037 // Swap the name of the function and the receiver on the stack to follow |
2023 // the calling convention for call ICs. | 2038 // the calling convention for call ICs. |
2024 __ pop(rcx); | 2039 __ pop(rcx); |
2025 __ push(rax); | 2040 __ push(rax); |
2026 __ push(rcx); | 2041 __ push(rcx); |
2027 | 2042 |
2028 // Load the arguments. | 2043 // Load the arguments. |
2029 ZoneList<Expression*>* args = expr->arguments(); | 2044 ZoneList<Expression*>* args = expr->arguments(); |
2030 int arg_count = args->length(); | 2045 int arg_count = args->length(); |
2031 { PreservePositionScope scope(masm()->positions_recorder()); | 2046 { PreservePositionScope scope(masm()->positions_recorder()); |
2032 for (int i = 0; i < arg_count; i++) { | 2047 for (int i = 0; i < arg_count; i++) { |
2033 VisitForStackValue(args->at(i)); | 2048 VisitForStackValue(args->at(i)); |
2034 } | 2049 } |
2035 } | 2050 } |
2036 // Record source position for debugger. | 2051 // Record source position for debugger. |
2037 SetSourcePosition(expr->position()); | 2052 SetSourcePosition(expr->position()); |
2038 // Call the IC initialization code. | 2053 // Call the IC initialization code. |
2039 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; | 2054 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
2040 Handle<Code> ic = | 2055 Handle<Code> ic = |
2041 ISOLATE->stub_cache()->ComputeKeyedCallInitialize(arg_count, in_loop); | 2056 ISOLATE->stub_cache()->ComputeKeyedCallInitialize(arg_count, in_loop); |
2042 __ movq(rcx, Operand(rsp, (arg_count + 1) * kPointerSize)); // Key. | 2057 __ movq(rcx, Operand(rsp, (arg_count + 1) * kPointerSize)); // Key. |
2043 EmitCallIC(ic, mode, expr->id()); | 2058 EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id()); |
2044 RecordJSReturnSite(expr); | 2059 RecordJSReturnSite(expr); |
2045 // Restore context register. | 2060 // Restore context register. |
2046 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); | 2061 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
2047 context()->DropAndPlug(1, rax); // Drop the key still on the stack. | 2062 context()->DropAndPlug(1, rax); // Drop the key still on the stack. |
2048 } | 2063 } |
2049 | 2064 |
2050 | 2065 |
2051 void FullCodeGenerator::EmitCallWithStub(Call* expr, CallFunctionFlags flags) { | 2066 void FullCodeGenerator::EmitCallWithStub(Call* expr, CallFunctionFlags flags) { |
2052 // Code common for calls using the call stub. | 2067 // Code common for calls using the call stub. |
2053 ZoneList<Expression*>* args = expr->arguments(); | 2068 ZoneList<Expression*>* args = expr->arguments(); |
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2144 } | 2159 } |
2145 | 2160 |
2146 // The runtime call returns a pair of values in rax (function) and | 2161 // The runtime call returns a pair of values in rax (function) and |
2147 // rdx (receiver). Touch up the stack with the right values. | 2162 // rdx (receiver). Touch up the stack with the right values. |
2148 __ movq(Operand(rsp, (arg_count + 0) * kPointerSize), rdx); | 2163 __ movq(Operand(rsp, (arg_count + 0) * kPointerSize), rdx); |
2149 __ movq(Operand(rsp, (arg_count + 1) * kPointerSize), rax); | 2164 __ movq(Operand(rsp, (arg_count + 1) * kPointerSize), rax); |
2150 } | 2165 } |
2151 // Record source position for debugger. | 2166 // Record source position for debugger. |
2152 SetSourcePosition(expr->position()); | 2167 SetSourcePosition(expr->position()); |
2153 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; | 2168 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
2154 CallFunctionStub stub(arg_count, in_loop, RECEIVER_MIGHT_BE_VALUE); | 2169 CallFunctionStub stub(arg_count, in_loop, RECEIVER_MIGHT_BE_IMPLICIT); |
2155 __ CallStub(&stub); | 2170 __ CallStub(&stub); |
2156 RecordJSReturnSite(expr); | 2171 RecordJSReturnSite(expr); |
2157 // Restore context register. | 2172 // Restore context register. |
2158 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); | 2173 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
2159 context()->DropAndPlug(1, rax); | 2174 context()->DropAndPlug(1, rax); |
2160 } else if (var != NULL && !var->is_this() && var->is_global()) { | 2175 } else if (var != NULL && !var->is_this() && var->is_global()) { |
2161 // Call to a global variable. | 2176 // Call to a global variable. |
2162 // Push global object as receiver for the call IC lookup. | 2177 // Push global object as receiver for the call IC lookup. |
2163 __ push(GlobalObjectOperand()); | 2178 __ push(GlobalObjectOperand()); |
2164 EmitCallWithIC(expr, var->name(), RelocInfo::CODE_TARGET_CONTEXT); | 2179 EmitCallWithIC(expr, var->name(), RelocInfo::CODE_TARGET_CONTEXT); |
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2193 __ jmp(&call, Label::kNear); | 2208 __ jmp(&call, Label::kNear); |
2194 __ bind(&done); | 2209 __ bind(&done); |
2195 // Push function. | 2210 // Push function. |
2196 __ push(rax); | 2211 __ push(rax); |
2197 // Push global receiver. | 2212 // Push global receiver. |
2198 __ movq(rbx, GlobalObjectOperand()); | 2213 __ movq(rbx, GlobalObjectOperand()); |
2199 __ push(FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); | 2214 __ push(FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
2200 __ bind(&call); | 2215 __ bind(&call); |
2201 } | 2216 } |
2202 | 2217 |
2203 // The receiver is either the global receiver or a JSObject found by | 2218 // The receiver is either the global receiver or an object found |
2204 // LoadContextSlot. | 2219 // by LoadContextSlot. That object could be the hole if the |
2205 EmitCallWithStub(expr, NO_CALL_FUNCTION_FLAGS); | 2220 // receiver is implicitly the global object. |
| 2221 EmitCallWithStub(expr, RECEIVER_MIGHT_BE_IMPLICIT); |
2206 } else if (fun->AsProperty() != NULL) { | 2222 } else if (fun->AsProperty() != NULL) { |
2207 // Call to an object property. | 2223 // Call to an object property. |
2208 Property* prop = fun->AsProperty(); | 2224 Property* prop = fun->AsProperty(); |
2209 Literal* key = prop->key()->AsLiteral(); | 2225 Literal* key = prop->key()->AsLiteral(); |
2210 if (key != NULL && key->handle()->IsSymbol()) { | 2226 if (key != NULL && key->handle()->IsSymbol()) { |
2211 // Call to a named property, use call IC. | 2227 // Call to a named property, use call IC. |
2212 { PreservePositionScope scope(masm()->positions_recorder()); | 2228 { PreservePositionScope scope(masm()->positions_recorder()); |
2213 VisitForStackValue(prop->obj()); | 2229 VisitForStackValue(prop->obj()); |
2214 } | 2230 } |
2215 EmitCallWithIC(expr, key->handle(), RelocInfo::CODE_TARGET); | 2231 EmitCallWithIC(expr, key->handle(), RelocInfo::CODE_TARGET); |
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2238 // Push result (function). | 2254 // Push result (function). |
2239 __ push(rax); | 2255 __ push(rax); |
2240 // Push Global receiver. | 2256 // Push Global receiver. |
2241 __ movq(rcx, GlobalObjectOperand()); | 2257 __ movq(rcx, GlobalObjectOperand()); |
2242 __ push(FieldOperand(rcx, GlobalObject::kGlobalReceiverOffset)); | 2258 __ push(FieldOperand(rcx, GlobalObject::kGlobalReceiverOffset)); |
2243 EmitCallWithStub(expr, NO_CALL_FUNCTION_FLAGS); | 2259 EmitCallWithStub(expr, NO_CALL_FUNCTION_FLAGS); |
2244 } else { | 2260 } else { |
2245 { PreservePositionScope scope(masm()->positions_recorder()); | 2261 { PreservePositionScope scope(masm()->positions_recorder()); |
2246 VisitForStackValue(prop->obj()); | 2262 VisitForStackValue(prop->obj()); |
2247 } | 2263 } |
2248 EmitKeyedCallWithIC(expr, prop->key(), RelocInfo::CODE_TARGET); | 2264 EmitKeyedCallWithIC(expr, prop->key()); |
2249 } | 2265 } |
2250 } | 2266 } |
2251 } else { | 2267 } else { |
2252 { PreservePositionScope scope(masm()->positions_recorder()); | 2268 { PreservePositionScope scope(masm()->positions_recorder()); |
2253 VisitForStackValue(fun); | 2269 VisitForStackValue(fun); |
2254 } | 2270 } |
2255 // Load global receiver object. | 2271 // Load global receiver object. |
2256 __ movq(rbx, GlobalObjectOperand()); | 2272 __ movq(rbx, GlobalObjectOperand()); |
2257 __ push(FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); | 2273 __ push(FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
2258 // Emit function call. | 2274 // Emit function call. |
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3585 // Push the arguments ("left-to-right"). | 3601 // Push the arguments ("left-to-right"). |
3586 int arg_count = args->length(); | 3602 int arg_count = args->length(); |
3587 for (int i = 0; i < arg_count; i++) { | 3603 for (int i = 0; i < arg_count; i++) { |
3588 VisitForStackValue(args->at(i)); | 3604 VisitForStackValue(args->at(i)); |
3589 } | 3605 } |
3590 | 3606 |
3591 if (expr->is_jsruntime()) { | 3607 if (expr->is_jsruntime()) { |
3592 // Call the JS runtime function using a call IC. | 3608 // Call the JS runtime function using a call IC. |
3593 __ Move(rcx, expr->name()); | 3609 __ Move(rcx, expr->name()); |
3594 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; | 3610 InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 3611 RelocInfo::Mode mode = RelocInfo::CODE_TARGET; |
3595 Handle<Code> ic = | 3612 Handle<Code> ic = |
3596 ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop); | 3613 ISOLATE->stub_cache()->ComputeCallInitialize(arg_count, in_loop, mode); |
3597 EmitCallIC(ic, RelocInfo::CODE_TARGET, expr->id()); | 3614 EmitCallIC(ic, mode, expr->id()); |
3598 // Restore context register. | 3615 // Restore context register. |
3599 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); | 3616 __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
3600 } else { | 3617 } else { |
3601 __ CallRuntime(expr->function(), arg_count); | 3618 __ CallRuntime(expr->function(), arg_count); |
3602 } | 3619 } |
3603 context()->Plug(rax); | 3620 context()->Plug(rax); |
3604 } | 3621 } |
3605 | 3622 |
3606 | 3623 |
3607 void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { | 3624 void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { |
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4295 __ ret(0); | 4312 __ ret(0); |
4296 } | 4313 } |
4297 | 4314 |
4298 | 4315 |
4299 #undef __ | 4316 #undef __ |
4300 | 4317 |
4301 | 4318 |
4302 } } // namespace v8::internal | 4319 } } // namespace v8::internal |
4303 | 4320 |
4304 #endif // V8_TARGET_ARCH_X64 | 4321 #endif // V8_TARGET_ARCH_X64 |
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