microregop.cc (4679:0b39fa8f5eb8) microregop.cc (4688:82d7cbf0e66d)
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *

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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"
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
5 * Redistribution and use of this software in source and binary forms,
6 * with or without modification, are permitted provided that the
7 * following conditions are met:
8 *

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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"
59#include <string>
60
61namespace X86ISA
62{
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) const
67 {
68 uint64_t flags = oldFlags & ~flagMask;
69 if(flagMask & CFBit && findCarry(dataSize, _dest, _src1, _src2))
70 flags |= CFBit;
71 if(flagMask & PFBit && findParity(dataSize, _dest))
72 flags |= PFBit;
73 if(flagMask & ECFBit && findCarry(dataSize, _dest, _src1, _src2))
74 flags |= ECFBit;
75 if(flagMask & AFBit && findCarry(4, _dest, _src1, _src2))
76 flags |= AFBit;
77 if(flagMask & EZFBit && findZero(dataSize, _dest))
78 flags |= EZFBit;
79 if(flagMask & ZFBit && findZero(dataSize, _dest))
80 flags |= ZFBit;
81 if(flagMask & SFBit && findNegative(dataSize, _dest))
82 flags |= SFBit;
83 if(flagMask & OFBit && findOverflow(dataSize, _dest, _src1, _src2))
84 flags |= OFBit;
85 return flags;
86 }
87
88 bool RegOpBase::checkCondition(uint64_t flags) const
89 {
90 CCFlagBits ccflags = flags;
91 switch(ext)
92 {
93 case ConditionTests::True:
94 return true;
95 case ConditionTests::ECF:
96 return ccflags.ECF;
97 case ConditionTests::EZF:
98 return ccflags.EZF;
99 case ConditionTests::SZnZF:
100 return !(!ccflags.EZF & ccflags.ZF);
101 case ConditionTests::MSTRZ:
102 panic("This condition is not implemented!");
103 case ConditionTests::STRZ:
104 panic("This condition is not implemented!");
105 case ConditionTests::MSTRC:
106 panic("This condition is not implemented!");
107 case ConditionTests::STRZnZF:
108 panic("This condition is not implemented!");
109 case ConditionTests::OF:
110 return ccflags.OF;
111 case ConditionTests::CF:
112 return ccflags.CF;
113 case ConditionTests::ZF:
114 return ccflags.ZF;
115 case ConditionTests::CvZF:
116 return ccflags.CF | ccflags.ZF;
117 case ConditionTests::SF:
118 return ccflags.SF;
119 case ConditionTests::PF:
120 return ccflags.PF;
121 case ConditionTests::SxOF:
122 return ccflags.SF ^ ccflags.OF;
123 case ConditionTests::SxOvZF:
124 return ccflags.SF ^ ccflags.OF | ccflags.ZF;
125 case ConditionTests::False:
126 return false;
127 case ConditionTests::NotECF:
128 return !ccflags.ECF;
129 case ConditionTests::NotEZF:
130 return !ccflags.EZF;
131 case ConditionTests::NotSZnZF:
132 return !ccflags.EZF & ccflags.ZF;
133 case ConditionTests::NotMSTRZ:
134 panic("This condition is not implemented!");
135 case ConditionTests::NotSTRZ:
136 panic("This condition is not implemented!");
137 case ConditionTests::NotMSTRC:
138 panic("This condition is not implemented!");
139 case ConditionTests::NotSTRZnZF:
140 panic("This condition is not implemented!");
141 case ConditionTests::NotOF:
142 return !ccflags.OF;
143 case ConditionTests::NotCF:
144 return !ccflags.CF;
145 case ConditionTests::NotZF:
146 return !ccflags.ZF;
147 case ConditionTests::NotCvZF:
148 return !(ccflags.CF | ccflags.ZF);
149 case ConditionTests::NotSF:
150 return !ccflags.SF;
151 case ConditionTests::NotPF:
152 return !ccflags.PF;
153 case ConditionTests::NotSxOF:
154 return !(ccflags.SF ^ ccflags.OF);
155 case ConditionTests::NotSxOvZF:
156 return !(ccflags.SF ^ ccflags.OF | ccflags.ZF);
157 }
158 panic("Unknown condition: %d\n", ext);
159 return true;
160 }
161
63 std::string RegOp::generateDisassembly(Addr pc,
64 const SymbolTable *symtab) const
65 {
66 std::stringstream response;
67
68 printMnemonic(response, instMnem, mnemonic);
69 printReg(response, dest);
70 response << ", ";

--- 19 unchanged lines hidden --- 		162 std::string RegOp::generateDisassembly(Addr pc,
163 const SymbolTable *symtab) const
164 {
165 std::stringstream response;
166
167 printMnemonic(response, instMnem, mnemonic);
168 printReg(response, dest);
169 response << ", ";

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