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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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47 __ JumpToBuiltin(ExternalReference(id)); | 47 __ JumpToBuiltin(ExternalReference(id)); |
48 } | 48 } |
49 | 49 |
50 | 50 |
51 void Builtins::Generate_JSConstructCall(MacroAssembler* masm) { | 51 void Builtins::Generate_JSConstructCall(MacroAssembler* masm) { |
52 // ----------- S t a t e ------------- | 52 // ----------- S t a t e ------------- |
53 // -- eax: number of arguments | 53 // -- eax: number of arguments |
54 // -- edi: constructor function | 54 // -- edi: constructor function |
55 // ----------------------------------- | 55 // ----------------------------------- |
56 | 56 |
| 57 Label non_function_call; |
| 58 // Check that function is not a smi. |
| 59 __ test(edi, Immediate(kSmiTagMask)); |
| 60 __ j(zero, &non_function_call); |
| 61 // Check that function is a JSFunction. |
| 62 __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); |
| 63 __ j(not_equal, &non_function_call); |
| 64 |
57 // Enter a construct frame. | 65 // Enter a construct frame. |
58 __ EnterConstructFrame(); | 66 __ EnterConstructFrame(); |
59 | 67 |
60 // Store a smi-tagged arguments count on the stack. | 68 // Store a smi-tagged arguments count on the stack. |
61 __ shl(eax, kSmiTagSize); | 69 __ shl(eax, kSmiTagSize); |
62 __ push(eax); | 70 __ push(eax); |
63 | 71 |
64 // Push the function to invoke on the stack. | 72 // Push the function to invoke on the stack. |
65 __ push(edi); | 73 __ push(edi); |
66 | 74 |
67 // Try to allocate the object without transitioning into C code. If any of the | 75 // Try to allocate the object without transitioning into C code. If any of the |
68 // preconditions is not met, the code bails out to the runtime call. | 76 // preconditions is not met, the code bails out to the runtime call. |
69 Label rt_call, allocated; | 77 Label rt_call, allocated; |
70 if (FLAG_inline_new) { | 78 if (FLAG_inline_new) { |
71 Label undo_allocation; | 79 Label undo_allocation; |
72 #ifdef ENABLE_DEBUGGER_SUPPORT | 80 #ifdef ENABLE_DEBUGGER_SUPPORT |
73 ExternalReference debug_step_in_fp = | 81 ExternalReference debug_step_in_fp = |
74 ExternalReference::debug_step_in_fp_address(); | 82 ExternalReference::debug_step_in_fp_address(); |
75 __ cmp(Operand::StaticVariable(debug_step_in_fp), Immediate(0)); | 83 __ cmp(Operand::StaticVariable(debug_step_in_fp), Immediate(0)); |
76 __ j(not_equal, &rt_call); | 84 __ j(not_equal, &rt_call); |
77 #endif | 85 #endif |
78 // Check that function is not a Smi. | |
79 __ test(edi, Immediate(kSmiTagMask)); | |
80 __ j(zero, &rt_call); | |
81 // Check that function is a JSFunction | |
82 __ CmpObjectType(edi, JS_FUNCTION_TYPE, eax); | |
83 __ j(not_equal, &rt_call); | |
84 | 86 |
85 // Verified that the constructor is a JSFunction. | 87 // Verified that the constructor is a JSFunction. |
86 // Load the initial map and verify that it is in fact a map. | 88 // Load the initial map and verify that it is in fact a map. |
87 // edi: constructor | 89 // edi: constructor |
88 __ mov(eax, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); | 90 __ mov(eax, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); |
89 // Will both indicate a NULL and a Smi | 91 // Will both indicate a NULL and a Smi |
90 __ test(eax, Immediate(kSmiTagMask)); | 92 __ test(eax, Immediate(kSmiTagMask)); |
91 __ j(zero, &rt_call); | 93 __ j(zero, &rt_call); |
92 // edi: constructor | 94 // edi: constructor |
93 // eax: initial map (if proven valid below) | 95 // eax: initial map (if proven valid below) |
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295 __ bind(&exit); | 297 __ bind(&exit); |
296 __ mov(ebx, Operand(esp, kPointerSize)); // get arguments count | 298 __ mov(ebx, Operand(esp, kPointerSize)); // get arguments count |
297 __ LeaveConstructFrame(); | 299 __ LeaveConstructFrame(); |
298 | 300 |
299 // Remove caller arguments from the stack and return. | 301 // Remove caller arguments from the stack and return. |
300 ASSERT(kSmiTagSize == 1 && kSmiTag == 0); | 302 ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
301 __ pop(ecx); | 303 __ pop(ecx); |
302 __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver | 304 __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver |
303 __ push(ecx); | 305 __ push(ecx); |
304 __ ret(0); | 306 __ ret(0); |
| 307 |
| 308 // edi: called object |
| 309 // eax: number of arguments |
| 310 __ bind(&non_function_call); |
| 311 |
| 312 // Set expected number of arguments to zero (not changing eax). |
| 313 __ Set(ebx, Immediate(0)); |
| 314 __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION); |
| 315 __ jmp(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), |
| 316 RelocInfo::CODE_TARGET); |
305 } | 317 } |
306 | 318 |
307 | 319 |
308 static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, | 320 static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
309 bool is_construct) { | 321 bool is_construct) { |
310 // Clear the context before we push it when entering the JS frame. | 322 // Clear the context before we push it when entering the JS frame. |
311 __ xor_(esi, Operand(esi)); // clear esi | 323 __ xor_(esi, Operand(esi)); // clear esi |
312 | 324 |
313 // Enter an internal frame. | 325 // Enter an internal frame. |
314 __ EnterInternalFrame(); | 326 __ EnterInternalFrame(); |
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749 // Dont adapt arguments. | 761 // Dont adapt arguments. |
750 // ------------------------------------------- | 762 // ------------------------------------------- |
751 __ bind(&dont_adapt_arguments); | 763 __ bind(&dont_adapt_arguments); |
752 __ jmp(Operand(edx)); | 764 __ jmp(Operand(edx)); |
753 } | 765 } |
754 | 766 |
755 | 767 |
756 #undef __ | 768 #undef __ |
757 | 769 |
758 } } // namespace v8::internal | 770 } } // namespace v8::internal |
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