static_inst.cc revision 5232 
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/static_inst.hh"
59#include "arch/x86/segmentregs.hh"
60
61namespace X86ISA
62{
63    void X86StaticInst::printMnemonic(std::ostream &os,
64            const char * mnemonic) const
65    {
66        ccprintf(os, "\t%s   ", mnemonic);
67    }
68
69    void X86StaticInst::printMnemonic(std::ostream &os,
70            const char * instMnemonic, const char * mnemonic) const
71    {
72        ccprintf(os, "\t%s : %s   ", instMnemonic, mnemonic);
73    }
74
75    void X86StaticInst::printSegment(std::ostream &os, int segment) const
76    {
77        switch (segment)
78        {
79          case SEGMENT_REG_ES:
80            ccprintf(os, "ES");
81            break;
82          case SEGMENT_REG_CS:
83            ccprintf(os, "CS");
84            break;
85          case SEGMENT_REG_SS:
86            ccprintf(os, "SS");
87            break;
88          case SEGMENT_REG_DS:
89            ccprintf(os, "DS");
90            break;
91          case SEGMENT_REG_FS:
92            ccprintf(os, "FS");
93            break;
94          case SEGMENT_REG_GS:
95            ccprintf(os, "GS");
96            break;
97          case SEGMENT_REG_INT:
98            ccprintf(os, "INT");
99            break;
100          default:
101            panic("Unrecognized segment %d\n", segment);
102        }
103    }
104
105    void
106    X86StaticInst::printSrcReg(std::ostream &os, int reg, int size) const
107    {
108        if(_numSrcRegs > reg)
109            printReg(os, _srcRegIdx[reg], size);
110    }
111
112    void
113    X86StaticInst::printDestReg(std::ostream &os, int reg, int size) const
114    {
115        if(_numDestRegs > reg)
116            printReg(os, _destRegIdx[reg], size);
117    }
118
119    void
120    X86StaticInst::printReg(std::ostream &os, int reg, int size) const
121    {
122        assert(size == 1 || size == 2 || size == 4 || size == 8);
123        static const char * abcdFormats[9] =
124            {"", "%s",  "%sx",  "", "e%sx", "", "", "", "r%sx"};
125        static const char * piFormats[9] =
126            {"", "%s",  "%s",   "", "e%s",  "", "", "", "r%s"};
127        static const char * longFormats[9] =
128            {"", "r%sb", "r%sw", "", "r%sd", "", "", "", "r%s"};
129        static const char * microFormats[9] =
130            {"", "t%db", "t%dw", "", "t%dd", "", "", "", "t%d"};
131
132        if (reg < FP_Base_DepTag) {
133            const char * suffix = "";
134            bool fold = reg & (1 << 6);
135            reg &= ~(1 << 6);
136
137            if(fold)
138            {
139                suffix = "h";
140                reg -= 4;
141            }
142            else if(reg < 8 && size == 1)
143                suffix = "l";
144
145            switch (reg) {
146              case INTREG_RAX:
147                ccprintf(os, abcdFormats[size], "a");
148                break;
149              case INTREG_RBX:
150                ccprintf(os, abcdFormats[size], "b");
151                break;
152              case INTREG_RCX:
153                ccprintf(os, abcdFormats[size], "c");
154                break;
155              case INTREG_RDX:
156                ccprintf(os, abcdFormats[size], "d");
157                break;
158              case INTREG_RSP:
159                ccprintf(os, piFormats[size], "sp");
160                break;
161              case INTREG_RBP:
162                ccprintf(os, piFormats[size], "bp");
163                break;
164              case INTREG_RSI:
165                ccprintf(os, piFormats[size], "si");
166                break;
167              case INTREG_RDI:
168                ccprintf(os, piFormats[size], "di");
169                break;
170              case INTREG_R8W:
171                ccprintf(os, longFormats[size], "8");
172                break;
173              case INTREG_R9W:
174                ccprintf(os, longFormats[size], "9");
175                break;
176              case INTREG_R10W:
177                ccprintf(os, longFormats[size], "10");
178                break;
179              case INTREG_R11W:
180                ccprintf(os, longFormats[size], "11");
181                break;
182              case INTREG_R12W:
183                ccprintf(os, longFormats[size], "12");
184                break;
185              case INTREG_R13W:
186                ccprintf(os, longFormats[size], "13");
187                break;
188              case INTREG_R14W:
189                ccprintf(os, longFormats[size], "14");
190                break;
191              case INTREG_R15W:
192                ccprintf(os, longFormats[size], "15");
193                break;
194              default:
195                ccprintf(os, microFormats[size], reg - NUM_INTREGS);
196            }
197            ccprintf(os, suffix);
198        } else if (reg < Ctrl_Base_DepTag) {
199            int fpindex = reg - FP_Base_DepTag;
200            if(fpindex < NumMMXRegs) {
201                ccprintf(os, "%%mmx%d", reg - FP_Base_DepTag);
202                return;
203            }
204            fpindex -= NumMMXRegs;
205            if(fpindex < NumXMMRegs * 2) {
206                ccprintf(os, "%%xmm%d_%s", fpindex / 2,
207                        (fpindex % 2) ? "high": "low");
208                return;
209            }
210            fpindex -= NumXMMRegs * 2;
211            if(fpindex < NumMicroFpRegs) {
212                ccprintf(os, "%%ufp%d", fpindex);
213                return;
214            }
215            fpindex -= NumMicroFpRegs;
216            ccprintf(os, "%%st(%d)", fpindex);
217        } else {
218            switch (reg - Ctrl_Base_DepTag) {
219              default:
220                ccprintf(os, "%%ctrl%d", reg - Ctrl_Base_DepTag);
221            }
222        }
223    }
224
225    std::string X86StaticInst::generateDisassembly(Addr pc,
226        const SymbolTable *symtab) const
227    {
228        std::stringstream ss;
229
230        printMnemonic(ss, mnemonic);
231
232        return ss.str();
233    }
234}
235