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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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| 577   __ mov(argument, r0); | 577   __ mov(argument, r0); | 
| 578   __ IncrementCounter(counters->string_ctor_conversions(), 1, r3, r4); | 578   __ IncrementCounter(counters->string_ctor_conversions(), 1, r3, r4); | 
| 579   __ b(&argument_is_string); | 579   __ b(&argument_is_string); | 
| 580 | 580 | 
| 581   // Invoke the conversion builtin and put the result into r2. | 581   // Invoke the conversion builtin and put the result into r2. | 
| 582   __ bind(&convert_argument); | 582   __ bind(&convert_argument); | 
| 583   __ push(function);  // Preserve the function. | 583   __ push(function);  // Preserve the function. | 
| 584   __ IncrementCounter(counters->string_ctor_conversions(), 1, r3, r4); | 584   __ IncrementCounter(counters->string_ctor_conversions(), 1, r3, r4); | 
| 585   __ EnterInternalFrame(); | 585   __ EnterInternalFrame(); | 
| 586   __ push(r0); | 586   __ push(r0); | 
| 587   __ InvokeBuiltin(Builtins::TO_STRING, CALL_JS); | 587   __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION); | 
| 588   __ LeaveInternalFrame(); | 588   __ LeaveInternalFrame(); | 
| 589   __ pop(function); | 589   __ pop(function); | 
| 590   __ mov(argument, r0); | 590   __ mov(argument, r0); | 
| 591   __ b(&argument_is_string); | 591   __ b(&argument_is_string); | 
| 592 | 592 | 
| 593   // Load the empty string into r2, remove the receiver from the | 593   // Load the empty string into r2, remove the receiver from the | 
| 594   // stack, and jump back to the case where the argument is a string. | 594   // stack, and jump back to the case where the argument is a string. | 
| 595   __ bind(&no_arguments); | 595   __ bind(&no_arguments); | 
| 596   __ LoadRoot(argument, Heap::kEmptyStringRootIndex); | 596   __ LoadRoot(argument, Heap::kEmptyStringRootIndex); | 
| 597   __ Drop(1); | 597   __ Drop(1); | 
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| 1263     __ b(lt, &convert_to_object); | 1263     __ b(lt, &convert_to_object); | 
| 1264     __ cmp(r3, Operand(LAST_JS_OBJECT_TYPE)); | 1264     __ cmp(r3, Operand(LAST_JS_OBJECT_TYPE)); | 
| 1265     __ b(le, &shift_arguments); | 1265     __ b(le, &shift_arguments); | 
| 1266 | 1266 | 
| 1267     __ bind(&convert_to_object); | 1267     __ bind(&convert_to_object); | 
| 1268     __ EnterInternalFrame();  // In order to preserve argument count. | 1268     __ EnterInternalFrame();  // In order to preserve argument count. | 
| 1269     __ mov(r0, Operand(r0, LSL, kSmiTagSize));  // Smi-tagged. | 1269     __ mov(r0, Operand(r0, LSL, kSmiTagSize));  // Smi-tagged. | 
| 1270     __ push(r0); | 1270     __ push(r0); | 
| 1271 | 1271 | 
| 1272     __ push(r2); | 1272     __ push(r2); | 
| 1273     __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_JS); | 1273     __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); | 
| 1274     __ mov(r2, r0); | 1274     __ mov(r2, r0); | 
| 1275 | 1275 | 
| 1276     __ pop(r0); | 1276     __ pop(r0); | 
| 1277     __ mov(r0, Operand(r0, ASR, kSmiTagSize)); | 1277     __ mov(r0, Operand(r0, ASR, kSmiTagSize)); | 
| 1278     __ LeaveInternalFrame(); | 1278     __ LeaveInternalFrame(); | 
| 1279     // Restore the function to r1. | 1279     // Restore the function to r1. | 
| 1280     __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); | 1280     __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); | 
| 1281     __ jmp(&patch_receiver); | 1281     __ jmp(&patch_receiver); | 
| 1282 | 1282 | 
| 1283     // Use the global receiver object from the called function as the | 1283     // Use the global receiver object from the called function as the | 
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| 1371   const int kArgsOffset     =  2 * kPointerSize; | 1371   const int kArgsOffset     =  2 * kPointerSize; | 
| 1372   const int kRecvOffset     =  3 * kPointerSize; | 1372   const int kRecvOffset     =  3 * kPointerSize; | 
| 1373   const int kFunctionOffset =  4 * kPointerSize; | 1373   const int kFunctionOffset =  4 * kPointerSize; | 
| 1374 | 1374 | 
| 1375   __ EnterInternalFrame(); | 1375   __ EnterInternalFrame(); | 
| 1376 | 1376 | 
| 1377   __ ldr(r0, MemOperand(fp, kFunctionOffset));  // get the function | 1377   __ ldr(r0, MemOperand(fp, kFunctionOffset));  // get the function | 
| 1378   __ push(r0); | 1378   __ push(r0); | 
| 1379   __ ldr(r0, MemOperand(fp, kArgsOffset));  // get the args array | 1379   __ ldr(r0, MemOperand(fp, kArgsOffset));  // get the args array | 
| 1380   __ push(r0); | 1380   __ push(r0); | 
| 1381   __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_JS); | 1381   __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); | 
| 1382 | 1382 | 
| 1383   // Check the stack for overflow. We are not trying need to catch | 1383   // Check the stack for overflow. We are not trying need to catch | 
| 1384   // interruptions (e.g. debug break and preemption) here, so the "real stack | 1384   // interruptions (e.g. debug break and preemption) here, so the "real stack | 
| 1385   // limit" is checked. | 1385   // limit" is checked. | 
| 1386   Label okay; | 1386   Label okay; | 
| 1387   __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); | 1387   __ LoadRoot(r2, Heap::kRealStackLimitRootIndex); | 
| 1388   // Make r2 the space we have left. The stack might already be overflowed | 1388   // Make r2 the space we have left. The stack might already be overflowed | 
| 1389   // here which will cause r2 to become negative. | 1389   // here which will cause r2 to become negative. | 
| 1390   __ sub(r2, sp, r2); | 1390   __ sub(r2, sp, r2); | 
| 1391   // Check if the arguments will overflow the stack. | 1391   // Check if the arguments will overflow the stack. | 
| 1392   __ cmp(r2, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize)); | 1392   __ cmp(r2, Operand(r0, LSL, kPointerSizeLog2 - kSmiTagSize)); | 
| 1393   __ b(gt, &okay);  // Signed comparison. | 1393   __ b(gt, &okay);  // Signed comparison. | 
| 1394 | 1394 | 
| 1395   // Out of stack space. | 1395   // Out of stack space. | 
| 1396   __ ldr(r1, MemOperand(fp, kFunctionOffset)); | 1396   __ ldr(r1, MemOperand(fp, kFunctionOffset)); | 
| 1397   __ push(r1); | 1397   __ push(r1); | 
| 1398   __ push(r0); | 1398   __ push(r0); | 
| 1399   __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_JS); | 1399   __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); | 
| 1400   // End of stack check. | 1400   // End of stack check. | 
| 1401 | 1401 | 
| 1402   // Push current limit and index. | 1402   // Push current limit and index. | 
| 1403   __ bind(&okay); | 1403   __ bind(&okay); | 
| 1404   __ push(r0);  // limit | 1404   __ push(r0);  // limit | 
| 1405   __ mov(r1, Operand(0, RelocInfo::NONE));  // initial index | 1405   __ mov(r1, Operand(0, RelocInfo::NONE));  // initial index | 
| 1406   __ push(r1); | 1406   __ push(r1); | 
| 1407 | 1407 | 
| 1408   // Change context eagerly to get the right global object if necessary. | 1408   // Change context eagerly to get the right global object if necessary. | 
| 1409   __ ldr(r0, MemOperand(fp, kFunctionOffset)); | 1409   __ ldr(r0, MemOperand(fp, kFunctionOffset)); | 
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| 1435   // r0: receiver | 1435   // r0: receiver | 
| 1436   __ CompareObjectType(r0, r1, r1, FIRST_JS_OBJECT_TYPE); | 1436   __ CompareObjectType(r0, r1, r1, FIRST_JS_OBJECT_TYPE); | 
| 1437   __ b(lt, &call_to_object); | 1437   __ b(lt, &call_to_object); | 
| 1438   __ cmp(r1, Operand(LAST_JS_OBJECT_TYPE)); | 1438   __ cmp(r1, Operand(LAST_JS_OBJECT_TYPE)); | 
| 1439   __ b(le, &push_receiver); | 1439   __ b(le, &push_receiver); | 
| 1440 | 1440 | 
| 1441   // Convert the receiver to a regular object. | 1441   // Convert the receiver to a regular object. | 
| 1442   // r0: receiver | 1442   // r0: receiver | 
| 1443   __ bind(&call_to_object); | 1443   __ bind(&call_to_object); | 
| 1444   __ push(r0); | 1444   __ push(r0); | 
| 1445   __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_JS); | 1445   __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); | 
| 1446   __ b(&push_receiver); | 1446   __ b(&push_receiver); | 
| 1447 | 1447 | 
| 1448   // Use the current global receiver object as the receiver. | 1448   // Use the current global receiver object as the receiver. | 
| 1449   __ bind(&use_global_receiver); | 1449   __ bind(&use_global_receiver); | 
| 1450   const int kGlobalOffset = | 1450   const int kGlobalOffset = | 
| 1451       Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; | 1451       Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; | 
| 1452   __ ldr(r0, FieldMemOperand(cp, kGlobalOffset)); | 1452   __ ldr(r0, FieldMemOperand(cp, kGlobalOffset)); | 
| 1453   __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalContextOffset)); | 1453   __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalContextOffset)); | 
| 1454   __ ldr(r0, FieldMemOperand(r0, kGlobalOffset)); | 1454   __ ldr(r0, FieldMemOperand(r0, kGlobalOffset)); | 
| 1455   __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset)); | 1455   __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalReceiverOffset)); | 
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| 1625   __ bind(&dont_adapt_arguments); | 1625   __ bind(&dont_adapt_arguments); | 
| 1626   __ Jump(r3); | 1626   __ Jump(r3); | 
| 1627 } | 1627 } | 
| 1628 | 1628 | 
| 1629 | 1629 | 
| 1630 #undef __ | 1630 #undef __ | 
| 1631 | 1631 | 
| 1632 } }  // namespace v8::internal | 1632 } }  // namespace v8::internal | 
| 1633 | 1633 | 
| 1634 #endif  // V8_TARGET_ARCH_ARM | 1634 #endif  // V8_TARGET_ARCH_ARM | 
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