static_inst.hh revision 12616:4b463b4dc098 
1/*
2 * Copyright (c) 2006-2007 The Regents of The University of Michigan
3 * All rights reserved.
4 * Copyright 2017 Google Inc.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Gabe Black
30 */
31#ifndef __ARCH_SPARC_INSTS_STATIC_INST_HH__
32#define __ARCH_SPARC_INSTS_STATIC_INST_HH__
33
34#include <cstdint>
35
36#include "base/trace.hh"
37#include "cpu/exec_context.hh"
38#include "cpu/static_inst.hh"
39
40namespace SparcISA
41{
42
43enum CondTest
44{
45    Always=0x8,
46    Never=0x0,
47    NotEqual=0x9,
48    Equal=0x1,
49    Greater=0xA,
50    LessOrEqual=0x2,
51    GreaterOrEqual=0xB,
52    Less=0x3,
53    GreaterUnsigned=0xC,
54    LessOrEqualUnsigned=0x4,
55    CarryClear=0xD,
56    CarrySet=0x5,
57    Positive=0xE,
58    Negative=0x6,
59    OverflowClear=0xF,
60    OverflowSet=0x7
61};
62
63extern const char *CondTestAbbrev[];
64
65enum FpCondTest
66{
67    FAlways=0x8,
68    FNever=0x0,
69    FUnordered=0x7,
70    FGreater=0x6,
71    FUnorderedOrGreater=0x5,
72    FLess=0x4,
73    FUnorderedOrLess=0x3,
74    FLessOrGreater=0x2,
75    FNotEqual=0x1,
76    FEqual=0x9,
77    FUnorderedOrEqual=0xA,
78    FGreaterOrEqual=0xB,
79    FUnorderedOrGreaterOrEqual=0xC,
80    FLessOrEqual=0xD,
81    FUnorderedOrLessOrEqual=0xE,
82    FOrdered=0xF
83};
84
85/**
86 * Base class for all SPARC static instructions.
87 */
88class SparcStaticInst : public StaticInst
89{
90  protected:
91    using StaticInst::StaticInst;
92
93    std::string generateDisassembly(
94            Addr pc, const SymbolTable *symtab) const override;
95
96    static void printMnemonic(std::ostream &os, const char *mnemonic);
97    static void printReg(std::ostream &os, RegId reg);
98
99    void printSrcReg(std::ostream &os, int reg) const;
100    void printDestReg(std::ostream &os, int reg) const;
101
102    void printRegArray(std::ostream &os,
103        const RegId indexArray[], int num) const;
104
105    void advancePC(PCState &pcState) const override;
106
107    static bool passesFpCondition(uint32_t fcc, uint32_t condition);
108    static bool passesCondition(uint32_t codes, uint32_t condition);
109
110    size_t
111    asBytes(void *buf, size_t size) override
112    {
113        return simpleAsBytes(buf, size, machInst);
114    }
115};
116
117}
118
119#endif //__ARCH_SPARC_INSTS_STATIC_INST_HH__
120