status_t
ArchitectureX8664::DisassembleCode(FunctionDebugInfo* function,
const void* buffer, size_t bufferSize, DisassembledCode*& _sourceCode)
{
DisassembledCode* source = new(std::nothrow) DisassembledCode(
fAssemblyLanguage);
if (source == NULL)
return B_NO_MEMORY;
BReference<DisassembledCode> sourceReference(source, true);
// init disassembler
DisassemblerX8664 disassembler;
status_t error = disassembler.Init(function->Address(), buffer, bufferSize);
if (error != B_OK)
return error;
// add a function name line
BString functionName(function->PrettyName());
if (!source->AddCommentLine((functionName << ':').String()))
return B_NO_MEMORY;
// disassemble the instructions
BString line;
target_addr_t instructionAddress;
target_size_t instructionSize;
bool breakpointAllowed;
while (disassembler.GetNextInstruction(line, instructionAddress,
instructionSize, breakpointAllowed) == B_OK) {
// TODO: Respect breakpointAllowed!
if (!source->AddInstructionLine(line, instructionAddress,
instructionSize)) {
return B_NO_MEMORY;
}
}
_sourceCode = sourceReference.Detach();
return B_OK;
}
status_t
ElfFile::CreateSymbolLookup(uint64 textDelta, ElfSymbolLookup*& _lookup) const
{
// Get the symbol table + corresponding string section. There may be two
// symbol tables: the dynamic and the non-dynamic one. The former contains
// only the symbols needed at run-time. The latter, if existing, is likely
// more complete. So try to find and use the latter one, falling back to the
// former.
ElfSection* symbolSection;
ElfSection* stringSection;
if (!_FindSymbolSections(symbolSection, stringSection, SHT_SYMTAB)
&& !_FindSymbolSections(symbolSection, stringSection, SHT_DYNSYM)) {
return B_ENTRY_NOT_FOUND;
}
// create a source with a segment for each section
SymbolLookupSource* source = new(std::nothrow) SymbolLookupSource(fFD);
if (source == NULL)
return B_NO_MEMORY;
BReference<SymbolLookupSource> sourceReference(source, true);
if (!source->AddSegment(symbolSection->Offset(), symbolSection->Size(),
symbolSection->Offset())
|| !source->AddSegment(stringSection->Offset(), stringSection->Size(),
stringSection->Offset())) {
return B_NO_MEMORY;
}
// create the lookup
size_t symbolTableEntrySize = Is64Bit()
? sizeof(ElfClass64::Sym) : sizeof(ElfClass32::Sym);
uint32 symbolCount = uint32(symbolSection->Size() / symbolTableEntrySize);
return ElfSymbolLookup::Create(source, symbolSection->Offset(), 0,
stringSection->Offset(), symbolCount, symbolTableEntrySize, textDelta,
f64Bit, fSwappedByteOrder, true, _lookup);
}
