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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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