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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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| 263 // r0: actual number of argument | 263 // r0: actual number of argument |
| 264 { Label done; | 264 { Label done; |
| 265 __ tst(r0, Operand(r0)); | 265 __ tst(r0, Operand(r0)); |
| 266 __ b(ne, &done); | 266 __ b(ne, &done); |
| 267 __ mov(r2, Operand(Factory::undefined_value())); | 267 __ mov(r2, Operand(Factory::undefined_value())); |
| 268 __ push(r2); | 268 __ push(r2); |
| 269 __ add(r0, r0, Operand(1)); | 269 __ add(r0, r0, Operand(1)); |
| 270 __ bind(&done); | 270 __ bind(&done); |
| 271 } | 271 } |
| 272 | 272 |
| 273 // 2. Get the function to call. Already in r1. | 273 // 2. Get the function to call from the stack. |
| 274 // r0: actual number of argument | 274 // r0: actual number of argument |
| 275 { Label done, non_function, function; | 275 { Label done, non_function, function; |
| 276 __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); | 276 __ ldr(r1, MemOperand(sp, r0, LSL, kPointerSizeLog2)); |
| 277 __ tst(r1, Operand(kSmiTagMask)); | 277 __ tst(r1, Operand(kSmiTagMask)); |
| 278 __ b(eq, &non_function); | 278 __ b(eq, &non_function); |
| 279 __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset)); | 279 __ ldr(r2, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 280 __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset)); | 280 __ ldrb(r2, FieldMemOperand(r2, Map::kInstanceTypeOffset)); |
| 281 __ cmp(r2, Operand(JS_FUNCTION_TYPE)); | 281 __ cmp(r2, Operand(JS_FUNCTION_TYPE)); |
| 282 __ b(eq, &function); | 282 __ b(eq, &function); |
| 283 | 283 |
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| 353 | 353 |
| 354 __ bind(&done); | 354 __ bind(&done); |
| 355 } | 355 } |
| 356 | 356 |
| 357 // 4. Shift stuff one slot down the stack | 357 // 4. Shift stuff one slot down the stack |
| 358 // r0: actual number of arguments (including call() receiver) | 358 // r0: actual number of arguments (including call() receiver) |
| 359 // r1: function | 359 // r1: function |
| 360 { Label loop; | 360 { Label loop; |
| 361 // Calculate the copy start address (destination). Copy end address is sp. | 361 // Calculate the copy start address (destination). Copy end address is sp. |
| 362 __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2)); | 362 __ add(r2, sp, Operand(r0, LSL, kPointerSizeLog2)); |
| 363 __ add(r2, r2, Operand(kPointerSize)); // copy receiver too |
| 363 | 364 |
| 364 __ bind(&loop); | 365 __ bind(&loop); |
| 365 __ ldr(ip, MemOperand(r2, -kPointerSize)); | 366 __ ldr(ip, MemOperand(r2, -kPointerSize)); |
| 366 __ str(ip, MemOperand(r2)); | 367 __ str(ip, MemOperand(r2)); |
| 367 __ sub(r2, r2, Operand(kPointerSize)); | 368 __ sub(r2, r2, Operand(kPointerSize)); |
| 368 __ cmp(r2, sp); | 369 __ cmp(r2, sp); |
| 369 __ b(ne, &loop); | 370 __ b(ne, &loop); |
| 370 } | 371 } |
| 371 | 372 |
| 372 // 5. Adjust the actual number of arguments and remove the top element. | 373 // 5. Adjust the actual number of arguments and remove the top element. |
| 373 // r0: actual number of arguments (including call() receiver) | 374 // r0: actual number of arguments (including call() receiver) |
| 374 // r1: function | 375 // r1: function |
| 375 __ sub(r0, r0, Operand(1)); | 376 __ sub(r0, r0, Operand(1)); |
| 376 __ add(sp, sp, Operand(kPointerSize)); | 377 __ add(sp, sp, Operand(kPointerSize)); |
| 377 | 378 |
| 378 // 6. Get the code for the function or the non-function builtin. | 379 // 6. Get the code for the function or the non-function builtin. |
| 379 // If number of expected arguments matches, then call. Otherwise restart | 380 // If number of expected arguments matches, then call. Otherwise restart |
| 380 // the arguments adaptor stub. | 381 // the arguments adaptor stub. |
| 381 // r0: actual number of arguments | 382 // r0: actual number of arguments |
| 382 // r1: function | 383 // r1: function |
| 383 { Label invoke; | 384 { Label invoke; |
| 384 __ tst(r1, r1); | 385 __ tst(r1, r1); |
| 385 __ b(ne, &invoke); | 386 __ b(ne, &invoke); |
| 386 // __ stop("Generate_ArgumentsAdaptorTrampoline - non-function call"); | |
| 387 __ mov(r2, Operand(0)); // expected arguments is 0 for CALL_NON_FUNCTION | 387 __ mov(r2, Operand(0)); // expected arguments is 0 for CALL_NON_FUNCTION |
| 388 __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION); | 388 __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION); |
| 389 __ Jump(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), code_target); | 389 __ Jump(Handle<Code>(builtin(ArgumentsAdaptorTrampoline)), code_target); |
| 390 | 390 |
| 391 __ bind(&invoke); | 391 __ bind(&invoke); |
| 392 __ ldr(r3, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); | 392 __ ldr(r3, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 393 __ ldr(r2, | 393 __ ldr(r2, |
| 394 FieldMemOperand(r3, | 394 FieldMemOperand(r3, |
| 395 SharedFunctionInfo::kFormalParameterCountOffset)); | 395 SharedFunctionInfo::kFormalParameterCountOffset)); |
| 396 __ ldr(r3, | 396 __ ldr(r3, |
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| 828 } | 828 } |
| 829 | 829 |
| 830 void Builtins::Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm) { | 830 void Builtins::Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm) { |
| 831 // Generate nothing as CodeStub CallFunction is not used on ARM. | 831 // Generate nothing as CodeStub CallFunction is not used on ARM. |
| 832 } | 832 } |
| 833 | 833 |
| 834 | 834 |
| 835 #undef __ | 835 #undef __ |
| 836 | 836 |
| 837 } } // namespace v8::internal | 837 } } // namespace v8::internal |
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