//============================================================================
// main : Entry point.
//----------------------------------------------------------------------------
func main() {
var dwarfData *dwarf.Data
var theFile *macho.File
var theErr os.Error
var relativeAddress uint64
var runtimeAddress uint64
var loadAddress uint64
var segmentAddress uint64
var pathMacho string
var pathDsym string
// Parse our arguments
flag.Uint64Var(&runtimeAddress, "raddr", 0, "")
flag.Uint64Var(&loadAddress, "laddr", 0, "")
flag.StringVar(&pathMacho, "macho", "", "")
flag.StringVar(&pathDsym, "dsym", "", "")
flag.Parse()
if runtimeAddress == 0 || loadAddress == 0 || pathMacho == "" || pathDsym == "" {
printHelp()
}
// Find the text segment address
theFile, theErr = macho.Open(pathMacho)
if theErr != nil {
fatalError("Can't open Mach-O file: " + theErr.String())
}
segmentAddress = theFile.Segment("__TEXT").Addr
theFile.Close()
// Calculate the target address
relativeAddress = runtimeAddress - loadAddress
gTargetAddress = segmentAddress + relativeAddress
// Find the target
theFile, theErr = macho.Open(pathDsym)
if theErr != nil {
fatalError("Can't open .dsym file: " + theErr.String())
}
dwarfData, theErr = theFile.DWARF()
if theErr != nil {
fatalError("Can't find DWARF info: " + theErr.String())
}
processChildren(dwarfData.Reader(), 0, false)
theFile.Close()
}
// Open an input file.
func open(name string) (*file, error) {
efile, err := Open(name)
var mfile *macho.File
if err != nil {
var merr error
mfile, merr = macho.Open(name)
if merr != nil {
return nil, err
}
}
r := &file{elf: efile, macho: mfile}
if efile != nil {
r.dwarf, err = efile.DWARF()
} else {
r.dwarf, err = mfile.DWARF()
}
if err != nil {
return nil, err
}
var syms []sym
if efile != nil {
esyms, err := efile.Symbols()
if err != nil {
return nil, err
}
syms = make([]sym, 0, len(esyms))
for _, s := range esyms {
if ST_TYPE(s.Info) == STT_FUNC {
syms = append(syms, sym{s.Name, uintptr(s.Value)})
}
}
} else {
syms = make([]sym, 0, len(mfile.Symtab.Syms))
for _, s := range mfile.Symtab.Syms {
syms = append(syms, sym{s.Name, uintptr(s.Value)})
}
}
r.symsByName = make([]sym, len(syms))
copy(r.symsByName, syms)
sort.Sort(symsByName(r.symsByName))
r.symsByAddr = syms
sort.Sort(symsByAddr(r.symsByAddr))
return r, nil
}
