1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
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.
13 *
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
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
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 <string>
41
42#include "arch/x86/insts/microregop.hh"
43#include "arch/x86/regs/misc.hh"
44#include "base/condcodes.hh"
| 1/*
2 * Copyright (c) 2007 The Hewlett-Packard Development Company
3 * All rights reserved.
4 *
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.
13 *
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
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
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 <string>
41
42#include "arch/x86/insts/microregop.hh"
43#include "arch/x86/regs/misc.hh"
44#include "base/condcodes.hh"
|
45
46namespace X86ISA
47{
48 uint64_t RegOpBase::genFlags(uint64_t oldFlags, uint64_t flagMask,
49 uint64_t _dest, uint64_t _src1, uint64_t _src2,
50 bool subtract) const
51 {
52 DPRINTF(X86, "flagMask = %#x\n", flagMask);
53 uint64_t flags = oldFlags & ~flagMask;
54 if(flagMask & (ECFBit | CFBit))
55 {
56 if(findCarry(dataSize*8, _dest, _src1, _src2))
57 flags |= (flagMask & (ECFBit | CFBit));
58 if(subtract)
59 flags ^= (flagMask & (ECFBit | CFBit));
60 }
61 if(flagMask & PFBit && !findParity(8, _dest))
62 flags |= PFBit;
63 if(flagMask & AFBit)
64 {
65 if(findCarry(4, _dest, _src1, _src2))
66 flags |= AFBit;
67 if(subtract)
68 flags ^= AFBit;
69 }
70 if(flagMask & (EZFBit | ZFBit) && findZero(dataSize*8, _dest))
71 flags |= (flagMask & (EZFBit | ZFBit));
72 if(flagMask & SFBit && findNegative(dataSize*8, _dest))
73 flags |= SFBit;
74 if(flagMask & OFBit && findOverflow(dataSize*8, _dest, _src1, _src2))
75 flags |= OFBit;
76 return flags;
77 }
78
79 std::string RegOp::generateDisassembly(Addr pc,
80 const SymbolTable *symtab) const
81 {
82 std::stringstream response;
83
84 printMnemonic(response, instMnem, mnemonic);
85 printDestReg(response, 0, dataSize);
86 response << ", ";
87 printSrcReg(response, 0, dataSize);
88 response << ", ";
89 printSrcReg(response, 1, dataSize);
90 return response.str();
91 }
92
93 std::string RegOpImm::generateDisassembly(Addr pc,
94 const SymbolTable *symtab) const
95 {
96 std::stringstream response;
97
98 printMnemonic(response, instMnem, mnemonic);
99 printDestReg(response, 0, dataSize);
100 response << ", ";
101 printSrcReg(response, 0, dataSize);
102 ccprintf(response, ", %#x", imm8);
103 return response.str();
104 }
105}
| 46
47namespace X86ISA
48{
49 uint64_t RegOpBase::genFlags(uint64_t oldFlags, uint64_t flagMask,
50 uint64_t _dest, uint64_t _src1, uint64_t _src2,
51 bool subtract) const
52 {
53 DPRINTF(X86, "flagMask = %#x\n", flagMask);
54 uint64_t flags = oldFlags & ~flagMask;
55 if(flagMask & (ECFBit | CFBit))
56 {
57 if(findCarry(dataSize*8, _dest, _src1, _src2))
58 flags |= (flagMask & (ECFBit | CFBit));
59 if(subtract)
60 flags ^= (flagMask & (ECFBit | CFBit));
61 }
62 if(flagMask & PFBit && !findParity(8, _dest))
63 flags |= PFBit;
64 if(flagMask & AFBit)
65 {
66 if(findCarry(4, _dest, _src1, _src2))
67 flags |= AFBit;
68 if(subtract)
69 flags ^= AFBit;
70 }
71 if(flagMask & (EZFBit | ZFBit) && findZero(dataSize*8, _dest))
72 flags |= (flagMask & (EZFBit | ZFBit));
73 if(flagMask & SFBit && findNegative(dataSize*8, _dest))
74 flags |= SFBit;
75 if(flagMask & OFBit && findOverflow(dataSize*8, _dest, _src1, _src2))
76 flags |= OFBit;
77 return flags;
78 }
79
80 std::string RegOp::generateDisassembly(Addr pc,
81 const SymbolTable *symtab) const
82 {
83 std::stringstream response;
84
85 printMnemonic(response, instMnem, mnemonic);
86 printDestReg(response, 0, dataSize);
87 response << ", ";
88 printSrcReg(response, 0, dataSize);
89 response << ", ";
90 printSrcReg(response, 1, dataSize);
91 return response.str();
92 }
93
94 std::string RegOpImm::generateDisassembly(Addr pc,
95 const SymbolTable *symtab) const
96 {
97 std::stringstream response;
98
99 printMnemonic(response, instMnem, mnemonic);
100 printDestReg(response, 0, dataSize);
101 response << ", ";
102 printSrcReg(response, 0, dataSize);
103 ccprintf(response, ", %#x", imm8);
104 return response.str();
105 }
106}
|