42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 * 55 * Authors: Gabe Black 56 */ 57 58#include "arch/x86/insts/microregop.hh" 59#include "arch/x86/miscregs.hh" 60#include "base/condcodes.hh" 61#include <string> 62 63namespace X86ISA 64{ 65 uint64_t RegOpBase::genFlags(uint64_t oldFlags, uint64_t flagMask, 66 uint64_t _dest, uint64_t _src1, uint64_t _src2, 67 bool subtract) const 68 { 69 DPRINTF(X86, "flagMask = %#x\n", flagMask); 70 if (_destRegIdx[0] & IntFoldBit) { 71 _dest >>= 8; 72 } 73 uint64_t flags = oldFlags & ~flagMask; 74 if(flagMask & (ECFBit | CFBit)) 75 { 76 if(findCarry(dataSize*8, _dest, _src1, _src2)) 77 flags |= (flagMask & (ECFBit | CFBit)); 78 if(subtract) 79 flags ^= (flagMask & (ECFBit | CFBit)); 80 } 81 if(flagMask & PFBit && !findParity(8, _dest)) 82 flags |= PFBit; 83 if(flagMask & AFBit) 84 { 85 if(findCarry(4, _dest, _src1, _src2)) 86 flags |= AFBit; 87 if(subtract) 88 flags ^= AFBit; 89 } 90 if(flagMask & (EZFBit | ZFBit) && findZero(dataSize*8, _dest)) 91 flags |= (flagMask & (EZFBit | ZFBit)); 92 if(flagMask & SFBit && findNegative(dataSize*8, _dest)) 93 flags |= SFBit; 94 if(flagMask & OFBit && findOverflow(dataSize*8, _dest, _src1, _src2)) 95 flags |= OFBit; 96 return flags; 97 } 98 99 std::string RegOp::generateDisassembly(Addr pc, 100 const SymbolTable *symtab) const 101 { 102 std::stringstream response; 103 104 printMnemonic(response, instMnem, mnemonic); 105 printDestReg(response, 0, dataSize); 106 response << ", "; 107 printSrcReg(response, 0, dataSize); 108 response << ", "; 109 printSrcReg(response, 1, dataSize); 110 return response.str(); 111 } 112 113 std::string RegOpImm::generateDisassembly(Addr pc, 114 const SymbolTable *symtab) const 115 { 116 std::stringstream response; 117 118 printMnemonic(response, instMnem, mnemonic); 119 printDestReg(response, 0, dataSize); 120 response << ", "; 121 printSrcReg(response, 0, dataSize); 122 ccprintf(response, ", %#x", imm8); 123 return response.str(); 124 } 125}
| 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 * 37 * Authors: Gabe Black 38 */ 39 40#include "arch/x86/insts/microregop.hh" 41#include "arch/x86/miscregs.hh" 42#include "base/condcodes.hh" 43#include <string> 44 45namespace X86ISA 46{ 47 uint64_t RegOpBase::genFlags(uint64_t oldFlags, uint64_t flagMask, 48 uint64_t _dest, uint64_t _src1, uint64_t _src2, 49 bool subtract) const 50 { 51 DPRINTF(X86, "flagMask = %#x\n", flagMask); 52 if (_destRegIdx[0] & IntFoldBit) { 53 _dest >>= 8; 54 } 55 uint64_t flags = oldFlags & ~flagMask; 56 if(flagMask & (ECFBit | CFBit)) 57 { 58 if(findCarry(dataSize*8, _dest, _src1, _src2)) 59 flags |= (flagMask & (ECFBit | CFBit)); 60 if(subtract) 61 flags ^= (flagMask & (ECFBit | CFBit)); 62 } 63 if(flagMask & PFBit && !findParity(8, _dest)) 64 flags |= PFBit; 65 if(flagMask & AFBit) 66 { 67 if(findCarry(4, _dest, _src1, _src2)) 68 flags |= AFBit; 69 if(subtract) 70 flags ^= AFBit; 71 } 72 if(flagMask & (EZFBit | ZFBit) && findZero(dataSize*8, _dest)) 73 flags |= (flagMask & (EZFBit | ZFBit)); 74 if(flagMask & SFBit && findNegative(dataSize*8, _dest)) 75 flags |= SFBit; 76 if(flagMask & OFBit && findOverflow(dataSize*8, _dest, _src1, _src2)) 77 flags |= OFBit; 78 return flags; 79 } 80 81 std::string RegOp::generateDisassembly(Addr pc, 82 const SymbolTable *symtab) const 83 { 84 std::stringstream response; 85 86 printMnemonic(response, instMnem, mnemonic); 87 printDestReg(response, 0, dataSize); 88 response << ", "; 89 printSrcReg(response, 0, dataSize); 90 response << ", "; 91 printSrcReg(response, 1, dataSize); 92 return response.str(); 93 } 94 95 std::string RegOpImm::generateDisassembly(Addr pc, 96 const SymbolTable *symtab) const 97 { 98 std::stringstream response; 99 100 printMnemonic(response, instMnem, mnemonic); 101 printDestReg(response, 0, dataSize); 102 response << ", "; 103 printSrcReg(response, 0, dataSize); 104 ccprintf(response, ", %#x", imm8); 105 return response.str(); 106 } 107}
|