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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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| 46 // but won't touch other registers except in special cases. | 46 // but won't touch other registers except in special cases. |
| 47 // | 47 // |
| 48 // Per the MIPS ABI, register t9 must be used for indirect function call | 48 // Per the MIPS ABI, register t9 must be used for indirect function call |
| 49 // via 'jalr t9' or 'jr t9' instructions. This is relied upon by gcc when | 49 // via 'jalr t9' or 'jr t9' instructions. This is relied upon by gcc when |
| 50 // trying to update gp register for position-independent-code. Whenever | 50 // trying to update gp register for position-independent-code. Whenever |
| 51 // MIPS generated code calls C code, it must be via t9 register. | 51 // MIPS generated code calls C code, it must be via t9 register. |
| 52 | 52 |
| 53 | 53 |
| 54 // Register aliases. | 54 // Register aliases. |
| 55 // cp is assumed to be a callee saved register. | 55 // cp is assumed to be a callee saved register. |
| 56 const Register lithiumScratchReg = s3; // Scratch register. | 56 const Register kLithiumScratchReg = s3; // Scratch register. |
| 57 const Register lithiumScratchReg2 = s4; // Scratch register. | 57 const Register kLithiumScratchReg2 = s4; // Scratch register. |
| 58 const Register condReg = s5; // Simulated (partial) condition code for mips. | 58 const Register kCondReg = s5; // Simulated (partial) condition code for mips. |
| 59 const Register roots = s6; // Roots array pointer. | 59 const Register kRootRegister = s6; // Roots array pointer. |
| 60 const Register cp = s7; // JavaScript context pointer. | 60 const Register cp = s7; // JavaScript context pointer. |
| 61 const Register fp = s8_fp; // Alias for fp. | 61 const Register fp = s8_fp; // Alias for fp. |
| 62 const DoubleRegister lithiumScratchDouble = f30; // Double scratch register. | 62 const DoubleRegister kLithiumScratchDouble = f30; // Double scratch register. |
| 63 | 63 |
| 64 // Flags used for the AllocateInNewSpace functions. | 64 // Flags used for the AllocateInNewSpace functions. |
| 65 enum AllocationFlags { | 65 enum AllocationFlags { |
| 66 // No special flags. | 66 // No special flags. |
| 67 NO_ALLOCATION_FLAGS = 0, | 67 NO_ALLOCATION_FLAGS = 0, |
| 68 // Return the pointer to the allocated already tagged as a heap object. | 68 // Return the pointer to the allocated already tagged as a heap object. |
| 69 TAG_OBJECT = 1 << 0, | 69 TAG_OBJECT = 1 << 0, |
| 70 // The content of the result register already contains the allocation top in | 70 // The content of the result register already contains the allocation top in |
| 71 // new space. | 71 // new space. |
| 72 RESULT_CONTAINS_TOP = 1 << 1, | 72 RESULT_CONTAINS_TOP = 1 << 1, |
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| 398 // --------------------------------------------------------------------------- | 398 // --------------------------------------------------------------------------- |
| 399 // Inline caching support. | 399 // Inline caching support. |
| 400 | 400 |
| 401 // Generate code for checking access rights - used for security checks | 401 // Generate code for checking access rights - used for security checks |
| 402 // on access to global objects across environments. The holder register | 402 // on access to global objects across environments. The holder register |
| 403 // is left untouched, whereas both scratch registers are clobbered. | 403 // is left untouched, whereas both scratch registers are clobbered. |
| 404 void CheckAccessGlobalProxy(Register holder_reg, | 404 void CheckAccessGlobalProxy(Register holder_reg, |
| 405 Register scratch, | 405 Register scratch, |
| 406 Label* miss); | 406 Label* miss); |
| 407 | 407 |
| 408 void GetNumberHash(Register reg0, Register scratch); |
| 408 | 409 |
| 409 void LoadFromNumberDictionary(Label* miss, | 410 void LoadFromNumberDictionary(Label* miss, |
| 410 Register elements, | 411 Register elements, |
| 411 Register key, | 412 Register key, |
| 412 Register result, | 413 Register result, |
| 413 Register reg0, | 414 Register reg0, |
| 414 Register reg1, | 415 Register reg1, |
| 415 Register reg2); | 416 Register reg2); |
| 416 | 417 |
| 417 | 418 |
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| 782 void LoadContext(Register dst, int context_chain_length); | 783 void LoadContext(Register dst, int context_chain_length); |
| 783 | 784 |
| 784 void LoadGlobalFunction(int index, Register function); | 785 void LoadGlobalFunction(int index, Register function); |
| 785 | 786 |
| 786 // Load the initial map from the global function. The registers | 787 // Load the initial map from the global function. The registers |
| 787 // function and map can be the same, function is then overwritten. | 788 // function and map can be the same, function is then overwritten. |
| 788 void LoadGlobalFunctionInitialMap(Register function, | 789 void LoadGlobalFunctionInitialMap(Register function, |
| 789 Register map, | 790 Register map, |
| 790 Register scratch); | 791 Register scratch); |
| 791 | 792 |
| 793 void InitializeRootRegister() { |
| 794 ExternalReference roots_array_start = |
| 795 ExternalReference::roots_array_start(isolate()); |
| 796 li(kRootRegister, Operand(roots_array_start)); |
| 797 } |
| 792 | 798 |
| 793 // ------------------------------------------------------------------------- | 799 // ------------------------------------------------------------------------- |
| 794 // JavaScript invokes. | 800 // JavaScript invokes. |
| 795 | 801 |
| 796 // Setup call kind marking in t1. The method takes t1 as an | 802 // Set up call kind marking in t1. The method takes t1 as an |
| 797 // explicit first parameter to make the code more readable at the | 803 // explicit first parameter to make the code more readable at the |
| 798 // call sites. | 804 // call sites. |
| 799 void SetCallKind(Register dst, CallKind kind); | 805 void SetCallKind(Register dst, CallKind kind); |
| 800 | 806 |
| 801 // Invoke the JavaScript function code by either calling or jumping. | 807 // Invoke the JavaScript function code by either calling or jumping. |
| 802 void InvokeCode(Register code, | 808 void InvokeCode(Register code, |
| 803 const ParameterCount& expected, | 809 const ParameterCount& expected, |
| 804 const ParameterCount& actual, | 810 const ParameterCount& actual, |
| 805 InvokeFlag flag, | 811 InvokeFlag flag, |
| 806 const CallWrapper& call_wrapper, | 812 const CallWrapper& call_wrapper, |
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| 1448 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) | 1454 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x) |
| 1449 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 1455 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
| 1450 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 1456 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
| 1451 #else | 1457 #else |
| 1452 #define ACCESS_MASM(masm) masm-> | 1458 #define ACCESS_MASM(masm) masm-> |
| 1453 #endif | 1459 #endif |
| 1454 | 1460 |
| 1455 } } // namespace v8::internal | 1461 } } // namespace v8::internal |
| 1456 | 1462 |
| 1457 #endif // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_ | 1463 #endif // V8_MIPS_MACRO_ASSEMBLER_MIPS_H_ |
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