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Disassemble functions per-BB #64

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Mar 21, 2025
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Disassemble functions per-BB #64

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64 changes: 32 additions & 32 deletions disassemble/disassemble.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -58,46 +58,46 @@ int main(int argc, char** argv) {
InstructionDecoder decoder((const void *)nullptr, 1, sts->getArch());
for(auto fit = all.begin(); fit != all.end(); ++fit) {
Function* f = *fit;
// get address of entry point for current function
Address crtAddr = f->addr();
int instr_count = 0;
auto fbl = f->blocks().end();
fbl--;
Block* b = *fbl;
Address lastAddr = b->end();
// if current function has zero instructions, d o n t output it
if(crtAddr == lastAddr)
// if current function has zero basic blocks, d o n t output it
if(f->blocks().empty())
continue;
cout << "\n\n" << hex << setfill('0') << setw(2 * sts->getAddressWidth()) << f->addr() << " <" << f->name() << ">:\n";
while(crtAddr < lastAddr) {
// decode current instruction
const unsigned char *instr_ptr = (const unsigned char *)f->isrc()->getPtrToInstruction(crtAddr);
instr = decoder.decode(instr_ptr);
auto fbl = f->blocks().end();
fbl--;
for (Block *b : f->blocks()) {
Address crtAddr = b->start();
Address lastAddr = b->end();
while(crtAddr < lastAddr) {
// decode current instruction
const unsigned char *instr_ptr = (const unsigned char *)f->isrc()->getPtrToInstruction(crtAddr);
instr = decoder.decode(instr_ptr);

// failed to decode the instruction
if (instr.size() == 0)
break;
// failed to decode the instruction
if (instr.size() == 0)
break;

// pretty print it
cout << hex << setfill(' ') << setw(8) << crtAddr << ": ";
for (size_t i = 0; i < instr.size() && i < l1_width; i++) {
cout << hex << setfill('0') << setw(2) << (unsigned)instr_ptr[i] << " ";
}
for (size_t i = min(instr.size(), (size_t)l1_width); i < 8; i++) {
cout << " ";
}
cout << instr.format() << "\n";
if (instr.size() > l1_width) {
cout << hex << setfill(' ') << setw(8) << crtAddr + l1_width << ": ";
for (size_t i = l1_width; i < instr.size(); i++) {
// pretty print it
cout << hex << setfill(' ') << setw(8) << crtAddr << ": ";
for (size_t i = 0; i < instr.size() && i < l1_width; i++) {
cout << hex << setfill('0') << setw(2) << (unsigned)instr_ptr[i] << " ";
}
cout << "\n";
}
for (size_t i = min(instr.size(), (size_t)l1_width); i < 8; i++) {
cout << " ";
}
cout << instr.format() << "\n";
if (instr.size() > l1_width) {
cout << hex << setfill(' ') << setw(8) << crtAddr + l1_width << ": ";
for (size_t i = l1_width; i < instr.size(); i++) {
cout << hex << setfill('0') << setw(2) << (unsigned)instr_ptr[i] << " ";
}
cout << "\n";
}

// go to the address of the next instruction
crtAddr += instr.size();
instr_count++;
// go to the address of the next instruction
crtAddr += instr.size();
instr_count++;
}
}
}
return 0;
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