| regop.isa (6442:580a6fbc7585) | regop.isa (6443:fa4e81c993d0) |
|---|---|
| 1// Copyright (c) 2007-2008 The Hewlett-Packard Development Company 2// All rights reserved. 3// 4// Redistribution and use of this software in source and binary forms, 5// with or without modification, are permitted provided that the 6// following conditions are met: 7// 8// The software must be used only for Non-Commercial Use which means any --- 686 unchanged lines hidden (view full) --- 695 ''' 696 697 class Sra(RegOp): 698 code = ''' 699 uint8_t shiftAmt = (op2 & ((dataSize == 8) ? mask(6) : mask(5))); 700 // Because what happens to the bits shift -in- on a right shift 701 // is not defined in the C/C++ standard, we have to sign extend 702 // them manually to be sure. | 1// Copyright (c) 2007-2008 The Hewlett-Packard Development Company 2// All rights reserved. 3// 4// Redistribution and use of this software in source and binary forms, 5// with or without modification, are permitted provided that the 6// following conditions are met: 7// 8// The software must be used only for Non-Commercial Use which means any --- 686 unchanged lines hidden (view full) --- 695 ''' 696 697 class Sra(RegOp): 698 code = ''' 699 uint8_t shiftAmt = (op2 & ((dataSize == 8) ? mask(6) : mask(5))); 700 // Because what happens to the bits shift -in- on a right shift 701 // is not defined in the C/C++ standard, we have to sign extend 702 // them manually to be sure. |
| 703 uint64_t arithMask = | 703 uint64_t arithMask = (shiftAmt == 0) ? 0 : |
| 704 -bits(psrc1, dataSize * 8 - 1) << (dataSize * 8 - shiftAmt); 705 DestReg = merge(DestReg, (psrc1 >> shiftAmt) | arithMask, dataSize); 706 ''' 707 flag_code = ''' 708 // If the shift amount is zero, no flags should be modified. 709 if (shiftAmt) { 710 //Zero out any flags we might modify. This way we only have to 711 //worry about setting them. --- 594 unchanged lines hidden --- | 704 -bits(psrc1, dataSize * 8 - 1) << (dataSize * 8 - shiftAmt); 705 DestReg = merge(DestReg, (psrc1 >> shiftAmt) | arithMask, dataSize); 706 ''' 707 flag_code = ''' 708 // If the shift amount is zero, no flags should be modified. 709 if (shiftAmt) { 710 //Zero out any flags we might modify. This way we only have to 711 //worry about setting them. --- 594 unchanged lines hidden --- |