func loadDwarfData(f *os.File) (*dwarf.Data, error) {
if obj, err := elf.NewFile(f); err == nil {
return obj.DWARF()
}
if obj, err := macho.NewFile(f); err == nil {
return obj.DWARF()
}
return nil, fmt.Errorf("unrecognized binary format")
}
func loadExecutable(f *os.File) (*arch.Architecture, *dwarf.Data, error) {
// TODO: How do we detect NaCl?
if obj, err := elf.NewFile(f); err == nil {
dwarfData, err := obj.DWARF()
if err != nil {
return nil, nil, err
}
switch obj.Machine {
case elf.EM_ARM:
return &arch.ARM, dwarfData, nil
case elf.EM_386:
switch obj.Class {
case elf.ELFCLASS32:
return &arch.X86, dwarfData, nil
case elf.ELFCLASS64:
return &arch.AMD64, dwarfData, nil
}
case elf.EM_X86_64:
return &arch.AMD64, dwarfData, nil
}
return nil, nil, fmt.Errorf("unrecognized ELF architecture")
}
if obj, err := macho.NewFile(f); err == nil {
dwarfData, err := obj.DWARF()
if err != nil {
return nil, nil, err
}
/* TODO
table, err := parseMachO(obj)
if err != nil {
return nil, nil, err
}
*/
switch obj.Cpu {
case macho.Cpu386:
return &arch.X86, dwarfData, nil
case macho.CpuAmd64:
return &arch.AMD64, dwarfData, nil
}
return nil, nil, fmt.Errorf("unrecognized Mach-O architecture")
}
return nil, nil, fmt.Errorf("unrecognized binary format")
}
func (dbp *Process) findExecutable(path string) (*elf.File, error) {
if path == "" {
path = fmt.Sprintf("/proc/%d/exe", dbp.Pid)
}
f, err := os.OpenFile(path, 0, os.ModePerm)
if err != nil {
return nil, err
}
elfFile, err := elf.NewFile(f)
if err != nil {
return nil, err
}
dbp.dwarf, err = elfFile.DWARF()
if err != nil {
return nil, err
}
return elfFile, nil
}