pred_inst.hh (7099:1949ba4db2cf) pred_inst.hh (7110:7d27bd3e7ffb)
1/* Copyright (c) 2007-2008 The Florida State University
1/*
2 * Copyright (c) 2010 ARM Limited
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 * Copyright (c) 2007-2008 The Florida State University
2 * All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the

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56 condCode((ConditionCode)(unsigned)machInst.condCode)
57 {
58 }
59};
60
61/**
62 * Base class for predicated immediate operations.
63 */
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the

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69 condCode((ConditionCode)(unsigned)machInst.condCode)
70 {
71 }
72};
73
74/**
75 * Base class for predicated immediate operations.
76 */
64class PredImmOp : public PredOp
77class PredImmOpBase : public PredOp
65{
66 protected:
67
68 uint32_t imm;
78{
79 protected:
80
81 uint32_t imm;
69 uint32_t rotate;
70 uint32_t rotated_imm;
71 uint32_t rotated_carry;
72
73 /// Constructor
82 uint32_t rotated_imm;
83 uint32_t rotated_carry;
84
85 /// Constructor
86 PredImmOpBase(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
87 PredOp(mnem, _machInst, __opClass),
88 imm(machInst.imm), rotated_imm(0), rotated_carry(0)
89 {
90 }
91
92 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
93};
94
95/**
96 * Base class for regular predicated immediate operations.
97 */
98class PredImmOp : public PredImmOpBase
99{
100 protected:
101
102 uint32_t rotate;
103
104 /// Constructor
74 PredImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
105 PredImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
75 PredOp(mnem, _machInst, __opClass),
76 imm(machInst.imm), rotate(machInst.rotate << 1),
77 rotated_imm(0), rotated_carry(0)
106 PredImmOpBase(mnem, _machInst, __opClass),
107 rotate(machInst.rotate << 1)
78 {
79 rotated_imm = rotate_imm(imm, rotate);
80 if (rotate != 0)
108 {
109 rotated_imm = rotate_imm(imm, rotate);
110 if (rotate != 0)
81 rotated_carry = (rotated_imm >> 31) & 1;
111 rotated_carry = bits(rotated_imm, 31);
82 }
112 }
113};
83
114
84 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
115/**
116 * Base class for modified predicated immediate operations.
117 */
118class PredModImmOp : public PredImmOpBase
119{
120 protected:
121
122 uint8_t ctrlImm;
123 uint8_t dataImm;
124
125
126 /// Constructor
127 PredModImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
128 PredImmOpBase(mnem, _machInst, __opClass),
129 ctrlImm(bits(machInst.instBits, 26) << 3 |
130 bits(machInst.instBits, 14, 12)),
131 dataImm(bits(machInst.instBits, 7, 0))
132 {
133 rotated_imm = modified_imm(ctrlImm, dataImm);
134 rotated_carry = bits(rotated_imm, 31);
135 }
85};
86
87/**
88 * Base class for predicated integer operations.
89 */
90class PredIntOp : public PredOp
91{
92 protected:

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137
138/**
139 * Base class for predicated integer operations.
140 */
141class PredIntOp : public PredOp
142{
143 protected:

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