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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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1020 // 2. Get the function to call (passed as receiver) from the stack, check | 1020 // 2. Get the function to call (passed as receiver) from the stack, check |
1021 // if it is a function. | 1021 // if it is a function. |
1022 Label slow, non_function; | 1022 Label slow, non_function; |
1023 __ Peek(function, Operand(argc, LSL, kXRegSizeInBytesLog2)); | 1023 __ Peek(function, Operand(argc, LSL, kXRegSizeInBytesLog2)); |
1024 __ JumpIfSmi(function, &non_function); | 1024 __ JumpIfSmi(function, &non_function); |
1025 __ JumpIfNotObjectType(function, scratch1, receiver_type, | 1025 __ JumpIfNotObjectType(function, scratch1, receiver_type, |
1026 JS_FUNCTION_TYPE, &slow); | 1026 JS_FUNCTION_TYPE, &slow); |
1027 | 1027 |
1028 // 3a. Patch the first argument if necessary when calling a function. | 1028 // 3a. Patch the first argument if necessary when calling a function. |
1029 Label shift_arguments; | 1029 Label shift_arguments; |
1030 __ Mov(call_type, call_type_JS_func); | 1030 __ Mov(call_type, static_cast<int>(call_type_JS_func)); |
1031 { Label convert_to_object, use_global_receiver, patch_receiver; | 1031 { Label convert_to_object, use_global_receiver, patch_receiver; |
1032 // Change context eagerly in case we need the global receiver. | 1032 // Change context eagerly in case we need the global receiver. |
1033 __ Ldr(cp, FieldMemOperand(function, JSFunction::kContextOffset)); | 1033 __ Ldr(cp, FieldMemOperand(function, JSFunction::kContextOffset)); |
1034 | 1034 |
1035 // Do not transform the receiver for strict mode functions. | 1035 // Do not transform the receiver for strict mode functions. |
1036 // Also do not transform the receiver for native (Compilerhints already in | 1036 // Also do not transform the receiver for native (Compilerhints already in |
1037 // x3). | 1037 // x3). |
1038 __ Ldr(scratch1, | 1038 __ Ldr(scratch1, |
1039 FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset)); | 1039 FieldMemOperand(function, JSFunction::kSharedFunctionInfoOffset)); |
1040 __ Ldr(scratch2.W(), | 1040 __ Ldr(scratch2.W(), |
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1071 __ Mov(receiver, x0); | 1071 __ Mov(receiver, x0); |
1072 | 1072 |
1073 __ Pop(argc); | 1073 __ Pop(argc); |
1074 __ SmiUntag(argc); | 1074 __ SmiUntag(argc); |
1075 | 1075 |
1076 // Exit the internal frame. | 1076 // Exit the internal frame. |
1077 } | 1077 } |
1078 | 1078 |
1079 // Restore the function and flag in the registers. | 1079 // Restore the function and flag in the registers. |
1080 __ Peek(function, Operand(argc, LSL, kXRegSizeInBytesLog2)); | 1080 __ Peek(function, Operand(argc, LSL, kXRegSizeInBytesLog2)); |
1081 __ Mov(call_type, call_type_JS_func); | 1081 __ Mov(call_type, static_cast<int>(call_type_JS_func)); |
1082 __ B(&patch_receiver); | 1082 __ B(&patch_receiver); |
1083 | 1083 |
1084 __ Bind(&use_global_receiver); | 1084 __ Bind(&use_global_receiver); |
1085 __ Ldr(receiver, GlobalObjectMemOperand()); | 1085 __ Ldr(receiver, GlobalObjectMemOperand()); |
1086 __ Ldr(receiver, | 1086 __ Ldr(receiver, |
1087 FieldMemOperand(receiver, GlobalObject::kGlobalReceiverOffset)); | 1087 FieldMemOperand(receiver, GlobalObject::kGlobalReceiverOffset)); |
1088 | 1088 |
1089 | 1089 |
1090 __ Bind(&patch_receiver); | 1090 __ Bind(&patch_receiver); |
1091 __ Sub(scratch1, argc, 1); | 1091 __ Sub(scratch1, argc, 1); |
1092 __ Poke(receiver, Operand(scratch1, LSL, kXRegSizeInBytesLog2)); | 1092 __ Poke(receiver, Operand(scratch1, LSL, kXRegSizeInBytesLog2)); |
1093 | 1093 |
1094 __ B(&shift_arguments); | 1094 __ B(&shift_arguments); |
1095 } | 1095 } |
1096 | 1096 |
1097 // 3b. Check for function proxy. | 1097 // 3b. Check for function proxy. |
1098 __ Bind(&slow); | 1098 __ Bind(&slow); |
1099 __ Mov(call_type, call_type_func_proxy); | 1099 __ Mov(call_type, static_cast<int>(call_type_func_proxy)); |
1100 __ Cmp(receiver_type, JS_FUNCTION_PROXY_TYPE); | 1100 __ Cmp(receiver_type, JS_FUNCTION_PROXY_TYPE); |
1101 __ B(eq, &shift_arguments); | 1101 __ B(eq, &shift_arguments); |
1102 __ Bind(&non_function); | 1102 __ Bind(&non_function); |
1103 __ Mov(call_type, call_type_non_func); | 1103 __ Mov(call_type, static_cast<int>(call_type_non_func)); |
1104 | 1104 |
1105 // 3c. Patch the first argument when calling a non-function. The | 1105 // 3c. Patch the first argument when calling a non-function. The |
1106 // CALL_NON_FUNCTION builtin expects the non-function callee as | 1106 // CALL_NON_FUNCTION builtin expects the non-function callee as |
1107 // receiver, so overwrite the first argument which will ultimately | 1107 // receiver, so overwrite the first argument which will ultimately |
1108 // become the receiver. | 1108 // become the receiver. |
1109 // call type (0: JS function, 1: function proxy, 2: non-function) | 1109 // call type (0: JS function, 1: function proxy, 2: non-function) |
1110 __ Sub(scratch1, argc, 1); | 1110 __ Sub(scratch1, argc, 1); |
1111 __ Poke(function, Operand(scratch1, LSL, kXRegSizeInBytesLog2)); | 1111 __ Poke(function, Operand(scratch1, LSL, kXRegSizeInBytesLog2)); |
1112 | 1112 |
1113 // 4. Shift arguments and return address one slot down on the stack | 1113 // 4. Shift arguments and return address one slot down on the stack |
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1131 __ Drop(1); | 1131 __ Drop(1); |
1132 } | 1132 } |
1133 | 1133 |
1134 // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin, | 1134 // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin, |
1135 // or a function proxy via CALL_FUNCTION_PROXY. | 1135 // or a function proxy via CALL_FUNCTION_PROXY. |
1136 // call type (0: JS function, 1: function proxy, 2: non-function) | 1136 // call type (0: JS function, 1: function proxy, 2: non-function) |
1137 { Label js_function, non_proxy; | 1137 { Label js_function, non_proxy; |
1138 __ Cbz(call_type, &js_function); | 1138 __ Cbz(call_type, &js_function); |
1139 // Expected number of arguments is 0 for CALL_NON_FUNCTION. | 1139 // Expected number of arguments is 0 for CALL_NON_FUNCTION. |
1140 __ Mov(x2, 0); | 1140 __ Mov(x2, 0); |
1141 __ Cmp(call_type, call_type_func_proxy); | 1141 __ Cmp(call_type, static_cast<int>(call_type_func_proxy)); |
1142 __ B(ne, &non_proxy); | 1142 __ B(ne, &non_proxy); |
1143 | 1143 |
1144 __ Push(function); // Re-add proxy object as additional argument. | 1144 __ Push(function); // Re-add proxy object as additional argument. |
1145 __ Add(argc, argc, 1); | 1145 __ Add(argc, argc, 1); |
1146 __ GetBuiltinFunction(function, Builtins::CALL_FUNCTION_PROXY); | 1146 __ GetBuiltinFunction(function, Builtins::CALL_FUNCTION_PROXY); |
1147 __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), | 1147 __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
1148 RelocInfo::CODE_TARGET); | 1148 RelocInfo::CODE_TARGET); |
1149 | 1149 |
1150 __ Bind(&non_proxy); | 1150 __ Bind(&non_proxy); |
1151 __ GetBuiltinFunction(function, Builtins::CALL_NON_FUNCTION); | 1151 __ GetBuiltinFunction(function, Builtins::CALL_NON_FUNCTION); |
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1470 __ Bind(&dont_adapt_arguments); | 1470 __ Bind(&dont_adapt_arguments); |
1471 __ Jump(x3); | 1471 __ Jump(x3); |
1472 } | 1472 } |
1473 | 1473 |
1474 | 1474 |
1475 #undef __ | 1475 #undef __ |
1476 | 1476 |
1477 } } // namespace v8::internal | 1477 } } // namespace v8::internal |
1478 | 1478 |
1479 #endif // V8_TARGET_ARCH_ARM | 1479 #endif // V8_TARGET_ARCH_ARM |
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