branch.hh (6253:988a001820f8) branch.hh (7099:1949ba4db2cf)
1/* 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

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47 protected:
48 /// Cached program counter from last disassembly
49 mutable Addr cachedPC;
50
51 /// Cached symbol table pointer from last disassembly
52 mutable const SymbolTable *cachedSymtab;
53
54 /// Constructor
1/* 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

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47 protected:
48 /// Cached program counter from last disassembly
49 mutable Addr cachedPC;
50
51 /// Cached symbol table pointer from last disassembly
52 mutable const SymbolTable *cachedSymtab;
53
54 /// Constructor
55 PCDependentDisassembly(const char *mnem, MachInst _machInst,
55 PCDependentDisassembly(const char *mnem, ExtMachInst _machInst,
56 OpClass __opClass)
57 : PredOp(mnem, _machInst, __opClass),
58 cachedPC(0), cachedSymtab(0)
59 {
60 }
61
62 const std::string &
63 disassemble(Addr pc, const SymbolTable *symtab) const;

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69 */
70class Branch : public PCDependentDisassembly
71{
72 protected:
73 /// target address (signed) Displacement .
74 int32_t disp;
75
76 /// Constructor.
56 OpClass __opClass)
57 : PredOp(mnem, _machInst, __opClass),
58 cachedPC(0), cachedSymtab(0)
59 {
60 }
61
62 const std::string &
63 disassemble(Addr pc, const SymbolTable *symtab) const;

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69 */
70class Branch : public PCDependentDisassembly
71{
72 protected:
73 /// target address (signed) Displacement .
74 int32_t disp;
75
76 /// Constructor.
77 Branch(const char *mnem, MachInst _machInst, OpClass __opClass)
77 Branch(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
78 : PCDependentDisassembly(mnem, _machInst, __opClass),
79 disp(machInst.offset << 2)
80 {
81 //If Bit 26 is 1 then Sign Extend
82 if ( (disp & 0x02000000) > 0 ) {
83 disp |= 0xFC000000;
84 }
85 }

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92
93/**
94 * Base class for branch and exchange instructions on the ARM
95 */
96class BranchExchange : public PredOp
97{
98 protected:
99 /// Constructor
78 : PCDependentDisassembly(mnem, _machInst, __opClass),
79 disp(machInst.offset << 2)
80 {
81 //If Bit 26 is 1 then Sign Extend
82 if ( (disp & 0x02000000) > 0 ) {
83 disp |= 0xFC000000;
84 }
85 }

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92
93/**
94 * Base class for branch and exchange instructions on the ARM
95 */
96class BranchExchange : public PredOp
97{
98 protected:
99 /// Constructor
100 BranchExchange(const char *mnem, MachInst _machInst,
100 BranchExchange(const char *mnem, ExtMachInst _machInst,
101 OpClass __opClass)
102 : PredOp(mnem, _machInst, __opClass)
103 {
104 }
105
106 std::string
107 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
108};

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118
119 /// Displacement to target address (signed).
120 int32_t disp;
121
122 uint32_t target;
123
124 public:
125 /// Constructor
101 OpClass __opClass)
102 : PredOp(mnem, _machInst, __opClass)
103 {
104 }
105
106 std::string
107 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
108};

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118
119 /// Displacement to target address (signed).
120 int32_t disp;
121
122 uint32_t target;
123
124 public:
125 /// Constructor
126 Jump(const char *mnem, MachInst _machInst, OpClass __opClass)
126 Jump(const char *mnem, ExtMachInst _machInst, OpClass __opClass)
127 : PCDependentDisassembly(mnem, _machInst, __opClass),
128 disp(machInst.offset << 2)
129 {
130 }
131
132 Addr branchTarget(ThreadContext *tc) const;
133
134 std::string
135 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
136};
137}
138
139#endif //__ARCH_ARM_INSTS_BRANCH_HH__
127 : PCDependentDisassembly(mnem, _machInst, __opClass),
128 disp(machInst.offset << 2)
129 {
130 }
131
132 Addr branchTarget(ThreadContext *tc) const;
133
134 std::string
135 generateDisassembly(Addr pc, const SymbolTable *symtab) const;
136};
137}
138
139#endif //__ARCH_ARM_INSTS_BRANCH_HH__