gem5 v24.0.0.0
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branch.cc
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1/*
2 * Copyright (c) 2006-2007 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
30
32//
33// Branch instructions
34//
35
36namespace gem5
37{
38
39namespace SparcISA
40{
41
42template class BranchNBits<19>;
43template class BranchNBits<22>;
44template class BranchNBits<30>;
45
46std::string
48{
49 std::stringstream response;
50
51 printMnemonic(response, mnemonic);
52 printRegArray(response, &srcRegIdx(0), _numSrcRegs);
54 response << ", ";
55 printDestReg(response, 0);
56
57 return response.str();
58}
59
60std::string
62 Addr pc, const loader::SymbolTable *symtab) const
63{
64 std::stringstream response;
65
66 printMnemonic(response, mnemonic);
67 printRegArray(response, &srcRegIdx(0), _numSrcRegs);
68 if (_numSrcRegs > 0)
69 response << ", ";
70 ccprintf(response, "0x%x", imm);
71 if (_numDestRegs > 0)
72 response << ", ";
73 printDestReg(response, 0);
74
75 return response.str();
76}
77
78std::string
80 Addr pc, const loader::SymbolTable *symtab) const
81{
82 std::stringstream response;
83
84 Addr target = disp + pc;
85
86 printMnemonic(response, mnemonic);
87 ccprintf(response, "%#x", target);
88
90 if (symtab && (it = symtab->findNearest(target)) != symtab->end()) {
91 ccprintf(response, " <%s", it->name());
92 if (it->address() != target)
93 ccprintf(response, "+%d>", target - it->address());
94 else
95 ccprintf(response, ">");
96 }
97
98 return response.str();
99}
100
101} // namespace SparcISA
102} // namespace gem5
std::string generateDisassembly(Addr pc, const loader::SymbolTable *symtab) const override
Internal function to generate disassembly string.
Definition branch.cc:79
std::string generateDisassembly(Addr pc, const loader::SymbolTable *symtab) const override
Internal function to generate disassembly string.
Definition branch.cc:61
std::string generateDisassembly(Addr pc, const loader::SymbolTable *symtab) const override
Internal function to generate disassembly string.
Definition branch.cc:47
void printRegArray(std::ostream &os, const RegId *indexArray, int num) const
static void printMnemonic(std::ostream &os, const char *mnemonic)
void printDestReg(std::ostream &os, int reg) const
uint8_t _numSrcRegs
See numSrcRegs().
uint8_t _numDestRegs
See numDestRegs().
const char * mnemonic
Base mnemonic (e.g., "add").
const RegId & srcRegIdx(int i) const
Return logical index (architectural reg num) of i'th source reg.
SymbolVector::const_iterator const_iterator
Definition symtab.hh:272
const_iterator end() const
Definition symtab.hh:278
const_iterator findNearest(Addr addr, Addr &next_addr) const
Find the nearest symbol equal to or less than the supplied address (e.g., the label for the enclosing...
Definition symtab.hh:474
Bitfield< 4 > pc
Copyright (c) 2024 - Pranith Kumar Copyright (c) 2020 Inria All rights reserved.
Definition binary32.hh:36
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition types.hh:147
void ccprintf(cp::Print &print)
Definition cprintf.hh:130

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