microregop.cc (6440:78d25904f66a) microregop.cc (7087:fb8d5786ff30)
1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
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:
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder. You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
8 *
13 *
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
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
32 * contributors may be used to endorse or promote products derived from
22 * 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.
23 * this software without specific prior written permission.
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}