int
main(int argc, char *argv[])
{
// Parse command-line
int argno=1;
for (/*void*/; argno<argc && '-'==argv[argno][0]; ++argno) {
if (!strcmp(argv[argno], "--")) {
++argno;
break;
} else {
std::cerr <<argv[0] <<": unrecognized switch: " <<argv[argno] <<"\n";
exit(1);
}
}
if (argno+1!=argc) {
std::cerr <<"usage: " <<argv[0] <<" [SWITCHES] [--] SPECIMEN\n";
exit(1);
}
std::string specimen_name = argv[argno++];
// Open the file
rose_addr_t start_va = 0;
MemoryMap map;
size_t file_size = map.insertFile(specimen_name, start_va);
map.at(start_va).limit(file_size).changeAccess(MemoryMap::EXECUTABLE, 0);
// Try to disassemble every byte, and print the CALL/FARCALL targets
size_t ninsns=0, nerrors=0;
Disassembler *disassembler = new DisassemblerX86(4);
for (rose_addr_t offset=0; offset<file_size; ++offset) {
try {
rose_addr_t insn_va = start_va + offset;
SgAsmX86Instruction *insn = isSgAsmX86Instruction(disassembler->disassembleOne(&map, insn_va));
if (insn && (x86_call==insn->get_kind() || x86_farcall==insn->get_kind())) {
++ninsns;
rose_addr_t target_va;
if (insn->getBranchTarget(&target_va))
std::cout <<StringUtility::addrToString(insn_va) <<": " <<StringUtility::addrToString(target_va) <<"\n";
}
} catch (const Disassembler::Exception &e) {
++nerrors;
}
}
std::cerr <<specimen_name <<": " <<ninsns <<" instructions; " <<nerrors <<" errors\n";
return 0;
}
virtual void visit(SgNode* n) {
SgAsmX86Instruction* insn = isSgAsmX86Instruction(n);
if (!insn) return;
if (insn->get_kind() != x86_call) return;
//cerr << "Found call xxx at " << hex << insn->get_address() << endl;
uint64_t tgtAddr;
if (!insn->getBranchTarget(&tgtAddr)) return;
//cerr << "Found call at " << hex << insn->get_address() << " with known target " << hex << tgtAddr << endl;
SgAsmInstruction* tgt = info->getInstructionAtAddress(tgtAddr);
if (!tgt) return;
//cerr << "Found target insn" << endl;
SgNode* f = tgt;
while (f && !isSgAsmBlock(f) && !isSgAsmFunction(f)) f = f->get_parent();
if (!f) return;
//cerr << "Found function of target" << endl;
uint64_t next = insn->get_address() + insn->get_raw_bytes().size();
info->returnTargets[isSgAsmStatement(f)].insert(next);
}
// see base class
bool
SgAsmX86Instruction::isFunctionCallFast(const std::vector<SgAsmInstruction*>& insns, rose_addr_t *target, rose_addr_t *return_va)
{
if (insns.empty())
return false;
SgAsmX86Instruction *last = isSgAsmX86Instruction(insns.back());
if (!last)
return false;
// Quick method based only on the kind of instruction
if (x86_call==last->get_kind() || x86_farcall==last->get_kind()) {
last->getBranchTarget(target);
if (return_va)
*return_va = last->get_address() + last->get_size();
return true;
}
return false;
}
