branch.cc revision 6691
16691Stjones1@inf.ed.ac.uk/* 26691Stjones1@inf.ed.ac.uk * Copyright (c) 2009 The University of Edinburgh 36691Stjones1@inf.ed.ac.uk * All rights reserved. 46691Stjones1@inf.ed.ac.uk * 56691Stjones1@inf.ed.ac.uk * Redistribution and use in source and binary forms, with or without 66691Stjones1@inf.ed.ac.uk * modification, are permitted provided that the following conditions are 76691Stjones1@inf.ed.ac.uk * met: redistributions of source code must retain the above copyright 86691Stjones1@inf.ed.ac.uk * notice, this list of conditions and the following disclaimer; 96691Stjones1@inf.ed.ac.uk * redistributions in binary form must reproduce the above copyright 106691Stjones1@inf.ed.ac.uk * notice, this list of conditions and the following disclaimer in the 116691Stjones1@inf.ed.ac.uk * documentation and/or other materials provided with the distribution; 126691Stjones1@inf.ed.ac.uk * neither the name of the copyright holders nor the names of its 136691Stjones1@inf.ed.ac.uk * contributors may be used to endorse or promote products derived from 146691Stjones1@inf.ed.ac.uk * this software without specific prior written permission. 156691Stjones1@inf.ed.ac.uk * 166691Stjones1@inf.ed.ac.uk * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176691Stjones1@inf.ed.ac.uk * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186691Stjones1@inf.ed.ac.uk * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196691Stjones1@inf.ed.ac.uk * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206691Stjones1@inf.ed.ac.uk * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216691Stjones1@inf.ed.ac.uk * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226691Stjones1@inf.ed.ac.uk * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236691Stjones1@inf.ed.ac.uk * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246691Stjones1@inf.ed.ac.uk * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256691Stjones1@inf.ed.ac.uk * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266691Stjones1@inf.ed.ac.uk * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276691Stjones1@inf.ed.ac.uk * 286691Stjones1@inf.ed.ac.uk * Authors: Timothy M. Jones 296691Stjones1@inf.ed.ac.uk */ 306691Stjones1@inf.ed.ac.uk 316691Stjones1@inf.ed.ac.uk#include "arch/power/insts/branch.hh" 326691Stjones1@inf.ed.ac.uk#include "base/loader/symtab.hh" 336691Stjones1@inf.ed.ac.uk 346691Stjones1@inf.ed.ac.ukusing namespace PowerISA; 356691Stjones1@inf.ed.ac.uk 366691Stjones1@inf.ed.ac.ukconst std::string & 376691Stjones1@inf.ed.ac.ukPCDependentDisassembly::disassemble(Addr pc, const SymbolTable *symtab) const 386691Stjones1@inf.ed.ac.uk{ 396691Stjones1@inf.ed.ac.uk if (!cachedDisassembly || 406691Stjones1@inf.ed.ac.uk pc != cachedPC || symtab != cachedSymtab) 416691Stjones1@inf.ed.ac.uk { 426691Stjones1@inf.ed.ac.uk if (cachedDisassembly) 436691Stjones1@inf.ed.ac.uk delete cachedDisassembly; 446691Stjones1@inf.ed.ac.uk 456691Stjones1@inf.ed.ac.uk cachedDisassembly = 466691Stjones1@inf.ed.ac.uk new std::string(generateDisassembly(pc, symtab)); 476691Stjones1@inf.ed.ac.uk cachedPC = pc; 486691Stjones1@inf.ed.ac.uk cachedSymtab = symtab; 496691Stjones1@inf.ed.ac.uk } 506691Stjones1@inf.ed.ac.uk 516691Stjones1@inf.ed.ac.uk return *cachedDisassembly; 526691Stjones1@inf.ed.ac.uk} 536691Stjones1@inf.ed.ac.uk 546691Stjones1@inf.ed.ac.ukAddr 556691Stjones1@inf.ed.ac.ukBranchPCRel::branchTarget(Addr pc) const 566691Stjones1@inf.ed.ac.uk{ 576691Stjones1@inf.ed.ac.uk return (uint32_t)(pc + disp); 586691Stjones1@inf.ed.ac.uk} 596691Stjones1@inf.ed.ac.uk 606691Stjones1@inf.ed.ac.ukstd::string 616691Stjones1@inf.ed.ac.ukBranchPCRel::generateDisassembly(Addr pc, const SymbolTable *symtab) const 626691Stjones1@inf.ed.ac.uk{ 636691Stjones1@inf.ed.ac.uk std::stringstream ss; 646691Stjones1@inf.ed.ac.uk 656691Stjones1@inf.ed.ac.uk ccprintf(ss, "%-10s ", mnemonic); 666691Stjones1@inf.ed.ac.uk 676691Stjones1@inf.ed.ac.uk Addr target = pc + disp; 686691Stjones1@inf.ed.ac.uk 696691Stjones1@inf.ed.ac.uk std::string str; 706691Stjones1@inf.ed.ac.uk if (symtab && symtab->findSymbol(target, str)) 716691Stjones1@inf.ed.ac.uk ss << str; 726691Stjones1@inf.ed.ac.uk else 736691Stjones1@inf.ed.ac.uk ccprintf(ss, "0x%x", target); 746691Stjones1@inf.ed.ac.uk 756691Stjones1@inf.ed.ac.uk return ss.str(); 766691Stjones1@inf.ed.ac.uk} 776691Stjones1@inf.ed.ac.uk 786691Stjones1@inf.ed.ac.ukAddr 796691Stjones1@inf.ed.ac.ukBranchNonPCRel::branchTarget(Addr pc) const 806691Stjones1@inf.ed.ac.uk{ 816691Stjones1@inf.ed.ac.uk return targetAddr; 826691Stjones1@inf.ed.ac.uk} 836691Stjones1@inf.ed.ac.uk 846691Stjones1@inf.ed.ac.ukstd::string 856691Stjones1@inf.ed.ac.ukBranchNonPCRel::generateDisassembly(Addr pc, const SymbolTable *symtab) const 866691Stjones1@inf.ed.ac.uk{ 876691Stjones1@inf.ed.ac.uk std::stringstream ss; 886691Stjones1@inf.ed.ac.uk 896691Stjones1@inf.ed.ac.uk ccprintf(ss, "%-10s ", mnemonic); 906691Stjones1@inf.ed.ac.uk 916691Stjones1@inf.ed.ac.uk std::string str; 926691Stjones1@inf.ed.ac.uk if (symtab && symtab->findSymbol(targetAddr, str)) 936691Stjones1@inf.ed.ac.uk ss << str; 946691Stjones1@inf.ed.ac.uk else 956691Stjones1@inf.ed.ac.uk ccprintf(ss, "0x%x", targetAddr); 966691Stjones1@inf.ed.ac.uk 976691Stjones1@inf.ed.ac.uk return ss.str(); 986691Stjones1@inf.ed.ac.uk} 996691Stjones1@inf.ed.ac.uk 1006691Stjones1@inf.ed.ac.ukAddr 1016691Stjones1@inf.ed.ac.ukBranchPCRelCond::branchTarget(Addr pc) const 1026691Stjones1@inf.ed.ac.uk{ 1036691Stjones1@inf.ed.ac.uk return (uint32_t)(pc + disp); 1046691Stjones1@inf.ed.ac.uk} 1056691Stjones1@inf.ed.ac.uk 1066691Stjones1@inf.ed.ac.ukstd::string 1076691Stjones1@inf.ed.ac.ukBranchPCRelCond::generateDisassembly(Addr pc, const SymbolTable *symtab) const 1086691Stjones1@inf.ed.ac.uk{ 1096691Stjones1@inf.ed.ac.uk std::stringstream ss; 1106691Stjones1@inf.ed.ac.uk 1116691Stjones1@inf.ed.ac.uk ccprintf(ss, "%-10s ", mnemonic); 1126691Stjones1@inf.ed.ac.uk 1136691Stjones1@inf.ed.ac.uk ss << bo << ", " << bi << ", "; 1146691Stjones1@inf.ed.ac.uk 1156691Stjones1@inf.ed.ac.uk Addr target = pc + disp; 1166691Stjones1@inf.ed.ac.uk 1176691Stjones1@inf.ed.ac.uk std::string str; 1186691Stjones1@inf.ed.ac.uk if (symtab && symtab->findSymbol(target, str)) 1196691Stjones1@inf.ed.ac.uk ss << str; 1206691Stjones1@inf.ed.ac.uk else 1216691Stjones1@inf.ed.ac.uk ccprintf(ss, "0x%x", target); 1226691Stjones1@inf.ed.ac.uk 1236691Stjones1@inf.ed.ac.uk return ss.str(); 1246691Stjones1@inf.ed.ac.uk} 1256691Stjones1@inf.ed.ac.uk 1266691Stjones1@inf.ed.ac.ukAddr 1276691Stjones1@inf.ed.ac.ukBranchNonPCRelCond::branchTarget(Addr pc) const 1286691Stjones1@inf.ed.ac.uk{ 1296691Stjones1@inf.ed.ac.uk return targetAddr; 1306691Stjones1@inf.ed.ac.uk} 1316691Stjones1@inf.ed.ac.uk 1326691Stjones1@inf.ed.ac.ukstd::string 1336691Stjones1@inf.ed.ac.ukBranchNonPCRelCond::generateDisassembly(Addr pc, 1346691Stjones1@inf.ed.ac.uk const SymbolTable *symtab) const 1356691Stjones1@inf.ed.ac.uk{ 1366691Stjones1@inf.ed.ac.uk std::stringstream ss; 1376691Stjones1@inf.ed.ac.uk 1386691Stjones1@inf.ed.ac.uk ccprintf(ss, "%-10s ", mnemonic); 1396691Stjones1@inf.ed.ac.uk 1406691Stjones1@inf.ed.ac.uk ss << bo << ", " << bi << ", "; 1416691Stjones1@inf.ed.ac.uk 1426691Stjones1@inf.ed.ac.uk std::string str; 1436691Stjones1@inf.ed.ac.uk if (symtab && symtab->findSymbol(targetAddr, str)) 1446691Stjones1@inf.ed.ac.uk ss << str; 1456691Stjones1@inf.ed.ac.uk else 1466691Stjones1@inf.ed.ac.uk ccprintf(ss, "0x%x", targetAddr); 1476691Stjones1@inf.ed.ac.uk 1486691Stjones1@inf.ed.ac.uk return ss.str(); 1496691Stjones1@inf.ed.ac.uk} 1506691Stjones1@inf.ed.ac.uk 1516691Stjones1@inf.ed.ac.ukAddr 1526691Stjones1@inf.ed.ac.ukBranchRegCond::branchTarget(ThreadContext *tc) const 1536691Stjones1@inf.ed.ac.uk{ 1546691Stjones1@inf.ed.ac.uk uint32_t regVal = tc->readIntReg(_srcRegIdx[_numSrcRegs - 1]); 1556691Stjones1@inf.ed.ac.uk return (regVal & 0xfffffffc); 1566691Stjones1@inf.ed.ac.uk} 1576691Stjones1@inf.ed.ac.uk 1586691Stjones1@inf.ed.ac.ukstd::string 1596691Stjones1@inf.ed.ac.ukBranchRegCond::generateDisassembly(Addr pc, 1606691Stjones1@inf.ed.ac.uk const SymbolTable *symtab) const 1616691Stjones1@inf.ed.ac.uk{ 1626691Stjones1@inf.ed.ac.uk std::stringstream ss; 1636691Stjones1@inf.ed.ac.uk 1646691Stjones1@inf.ed.ac.uk ccprintf(ss, "%-10s ", mnemonic); 1656691Stjones1@inf.ed.ac.uk 1666691Stjones1@inf.ed.ac.uk ss << bo << ", " << bi << ", "; 1676691Stjones1@inf.ed.ac.uk 1686691Stjones1@inf.ed.ac.uk return ss.str(); 1696691Stjones1@inf.ed.ac.uk} 170