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 *
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use. Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
17 *
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 * Director of Intellectual Property Licensing
21 * Office of Strategy and Technology
22 * Hewlett-Packard Company
23 * 1501 Page Mill Road
24 * Palo Alto, California 94304
25 *
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer. Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution. Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission. No right of
34 * sublicense is granted herewith. Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses. Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
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(Sparc, "flagMask = %#x\n", flagMask);
70 uint64_t flags = oldFlags & ~flagMask;
71 if(flagMask & CFBit)
72 if(findCarry(dataSize*8, _dest, _src1, _src2))
73 flags |= CFBit;
74 if(subtract)
75 flags ^= CFBit;
76 if(flagMask & PFBit && findParity(dataSize*8, _dest))
77 flags |= PFBit;
78 if(flagMask & ECFBit && findCarry(dataSize*8, _dest, _src1, _src2))
79 flags |= ECFBit;
80 if(flagMask & AFBit)
81 if(findCarry(4, _dest, _src1, _src2))
82 flags |= AFBit;
83 if(subtract)
84 flags ^= AFBit;
85 if(flagMask & EZFBit && findZero(dataSize*8, _dest))
86 flags |= EZFBit;
87 if(flagMask & ZFBit && findZero(dataSize*8, _dest))
88 flags |= ZFBit;
89 if(flagMask & SFBit && findNegative(dataSize*8, _dest))
90 flags |= SFBit;
91 if(flagMask & OFBit && findOverflow(dataSize*8, _dest, _src1, _src2))
92 flags |= OFBit;
93 return flags;
94 }
95
96 bool RegOpBase::checkCondition(uint64_t flags) const
97 {
98 CCFlagBits ccflags = flags;
99 switch(ext)
100 {
101 case ConditionTests::True:
102 return true;
103 case ConditionTests::ECF:
104 return ccflags.ECF;
105 case ConditionTests::EZF:
106 return ccflags.EZF;
107 case ConditionTests::SZnZF:
108 return !(!ccflags.EZF & ccflags.ZF);
109 case ConditionTests::MSTRZ:
110 panic("This condition is not implemented!");
111 case ConditionTests::STRZ:
112 panic("This condition is not implemented!");
113 case ConditionTests::MSTRC:
114 panic("This condition is not implemented!");
115 case ConditionTests::STRZnZF:
116 panic("This condition is not implemented!");
117 case ConditionTests::OF:
118 return ccflags.OF;
119 case ConditionTests::CF:
120 return ccflags.CF;
121 case ConditionTests::ZF:
122 return ccflags.ZF;
123 case ConditionTests::CvZF:
124 return ccflags.CF | ccflags.ZF;
125 case ConditionTests::SF:
126 return ccflags.SF;
127 case ConditionTests::PF:
128 return ccflags.PF;
129 case ConditionTests::SxOF:
130 return ccflags.SF ^ ccflags.OF;
131 case ConditionTests::SxOvZF:
132 return ccflags.SF ^ ccflags.OF | ccflags.ZF;
133 case ConditionTests::False:
134 return false;
135 case ConditionTests::NotECF:
136 return !ccflags.ECF;
137 case ConditionTests::NotEZF:
138 return !ccflags.EZF;
139 case ConditionTests::NotSZnZF:
140 return !ccflags.EZF & ccflags.ZF;
141 case ConditionTests::NotMSTRZ:
142 panic("This condition is not implemented!");
143 case ConditionTests::NotSTRZ:
144 panic("This condition is not implemented!");
145 case ConditionTests::NotMSTRC:
146 panic("This condition is not implemented!");
147 case ConditionTests::NotSTRZnZF:
148 panic("This condition is not implemented!");
149 case ConditionTests::NotOF:
150 return !ccflags.OF;
151 case ConditionTests::NotCF:
152 return !ccflags.CF;
153 case ConditionTests::NotZF:
154 return !ccflags.ZF;
155 case ConditionTests::NotCvZF:
156 return !(ccflags.CF | ccflags.ZF);
157 case ConditionTests::NotSF:
158 return !ccflags.SF;
159 case ConditionTests::NotPF:
160 return !ccflags.PF;
161 case ConditionTests::NotSxOF:
162 return !(ccflags.SF ^ ccflags.OF);
163 case ConditionTests::NotSxOvZF:
164 return !(ccflags.SF ^ ccflags.OF | ccflags.ZF);
165 }
166 panic("Unknown condition: %d\n", ext);
167 return true;
168 }
169
170 std::string RegOp::generateDisassembly(Addr pc,
171 const SymbolTable *symtab) const
172 {
173 std::stringstream response;
174
175 printMnemonic(response, instMnem, mnemonic);
| 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 *
9 * The software must be used only for Non-Commercial Use which means any
10 * use which is NOT directed to receiving any direct monetary
11 * compensation for, or commercial advantage from such use. Illustrative
12 * examples of non-commercial use are academic research, personal study,
13 * teaching, education and corporate research & development.
14 * Illustrative examples of commercial use are distributing products for
15 * commercial advantage and providing services using the software for
16 * commercial advantage.
17 *
18 * If you wish to use this software or functionality therein that may be
19 * covered by patents for commercial use, please contact:
20 * Director of Intellectual Property Licensing
21 * Office of Strategy and Technology
22 * Hewlett-Packard Company
23 * 1501 Page Mill Road
24 * Palo Alto, California 94304
25 *
26 * Redistributions of source code must retain the above copyright notice,
27 * this list of conditions and the following disclaimer. Redistributions
28 * in binary form must reproduce the above copyright notice, this list of
29 * conditions and the following disclaimer in the documentation and/or
30 * other materials provided with the distribution. Neither the name of
31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
32 * contributors may be used to endorse or promote products derived from
33 * this software without specific prior written permission. No right of
34 * sublicense is granted herewith. Derivatives of the software and
35 * output created using the software may be prepared, but only for
36 * Non-Commercial Uses. Derivatives of the software may be shared with
37 * others provided: (i) the others agree to abide by the list of
38 * conditions herein which includes the Non-Commercial Use restrictions;
39 * and (ii) such Derivatives of the software include the above copyright
40 * notice to acknowledge the contribution from this software where
41 * applicable, this list of conditions and the disclaimer below.
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(Sparc, "flagMask = %#x\n", flagMask);
70 uint64_t flags = oldFlags & ~flagMask;
71 if(flagMask & CFBit)
72 if(findCarry(dataSize*8, _dest, _src1, _src2))
73 flags |= CFBit;
74 if(subtract)
75 flags ^= CFBit;
76 if(flagMask & PFBit && findParity(dataSize*8, _dest))
77 flags |= PFBit;
78 if(flagMask & ECFBit && findCarry(dataSize*8, _dest, _src1, _src2))
79 flags |= ECFBit;
80 if(flagMask & AFBit)
81 if(findCarry(4, _dest, _src1, _src2))
82 flags |= AFBit;
83 if(subtract)
84 flags ^= AFBit;
85 if(flagMask & EZFBit && findZero(dataSize*8, _dest))
86 flags |= EZFBit;
87 if(flagMask & ZFBit && findZero(dataSize*8, _dest))
88 flags |= ZFBit;
89 if(flagMask & SFBit && findNegative(dataSize*8, _dest))
90 flags |= SFBit;
91 if(flagMask & OFBit && findOverflow(dataSize*8, _dest, _src1, _src2))
92 flags |= OFBit;
93 return flags;
94 }
95
96 bool RegOpBase::checkCondition(uint64_t flags) const
97 {
98 CCFlagBits ccflags = flags;
99 switch(ext)
100 {
101 case ConditionTests::True:
102 return true;
103 case ConditionTests::ECF:
104 return ccflags.ECF;
105 case ConditionTests::EZF:
106 return ccflags.EZF;
107 case ConditionTests::SZnZF:
108 return !(!ccflags.EZF & ccflags.ZF);
109 case ConditionTests::MSTRZ:
110 panic("This condition is not implemented!");
111 case ConditionTests::STRZ:
112 panic("This condition is not implemented!");
113 case ConditionTests::MSTRC:
114 panic("This condition is not implemented!");
115 case ConditionTests::STRZnZF:
116 panic("This condition is not implemented!");
117 case ConditionTests::OF:
118 return ccflags.OF;
119 case ConditionTests::CF:
120 return ccflags.CF;
121 case ConditionTests::ZF:
122 return ccflags.ZF;
123 case ConditionTests::CvZF:
124 return ccflags.CF | ccflags.ZF;
125 case ConditionTests::SF:
126 return ccflags.SF;
127 case ConditionTests::PF:
128 return ccflags.PF;
129 case ConditionTests::SxOF:
130 return ccflags.SF ^ ccflags.OF;
131 case ConditionTests::SxOvZF:
132 return ccflags.SF ^ ccflags.OF | ccflags.ZF;
133 case ConditionTests::False:
134 return false;
135 case ConditionTests::NotECF:
136 return !ccflags.ECF;
137 case ConditionTests::NotEZF:
138 return !ccflags.EZF;
139 case ConditionTests::NotSZnZF:
140 return !ccflags.EZF & ccflags.ZF;
141 case ConditionTests::NotMSTRZ:
142 panic("This condition is not implemented!");
143 case ConditionTests::NotSTRZ:
144 panic("This condition is not implemented!");
145 case ConditionTests::NotMSTRC:
146 panic("This condition is not implemented!");
147 case ConditionTests::NotSTRZnZF:
148 panic("This condition is not implemented!");
149 case ConditionTests::NotOF:
150 return !ccflags.OF;
151 case ConditionTests::NotCF:
152 return !ccflags.CF;
153 case ConditionTests::NotZF:
154 return !ccflags.ZF;
155 case ConditionTests::NotCvZF:
156 return !(ccflags.CF | ccflags.ZF);
157 case ConditionTests::NotSF:
158 return !ccflags.SF;
159 case ConditionTests::NotPF:
160 return !ccflags.PF;
161 case ConditionTests::NotSxOF:
162 return !(ccflags.SF ^ ccflags.OF);
163 case ConditionTests::NotSxOvZF:
164 return !(ccflags.SF ^ ccflags.OF | ccflags.ZF);
165 }
166 panic("Unknown condition: %d\n", ext);
167 return true;
168 }
169
170 std::string RegOp::generateDisassembly(Addr pc,
171 const SymbolTable *symtab) const
172 {
173 std::stringstream response;
174
175 printMnemonic(response, instMnem, mnemonic);
|