func producer(debugfile *elf.File, dwzfile *elf.File, debug_package string, debug_file string) []string {
var output []string
// iterate over all CUs present in debugfile
d, e := debugfile.DWARF() // increases memory usage by 2x to 3x!
if e != nil {
log.Println(e, debug_package, debug_file)
return output
}
reader := d.Reader()
for {
entry, err := reader.Next()
if err != nil {
log.Println(err, debug_file, debug_package)
break
}
if entry == nil {
break
}
if entry.Tag == dwarf.TagCompileUnit {
for _, f := range entry.Field {
if f.Attr == dwarf.AttrName {
switch f.Val.(type) {
case string:
output = append(output, f.Val.(string))
case dwarf.OffsetStrpAlt:
output = append(output, (string)(f.Val.(dwarf.OffsetStrpAlt)))
case dwarf.OffsetRefAlt:
log.Panic("DW_FORM_GNU_ref_alt handling missing for dwarf.AttrName ;(")
default:
panic("form unhandled for dwarf.AttrName, expect the unexpected ;(")
}
} else if f.Attr == dwarf.AttrProducer {
switch f.Val.(type) {
case string:
output = append(output, f.Val.(string))
case dwarf.OffsetStrpAlt:
output = append(output, dwzparser(dwzfile, (int64)(f.Val.(dwarf.OffsetStrpAlt)), debug_package, debug_file))
case dwarf.OffsetRefAlt:
log.Panic("DW_FORM_GNU_ref_alt handling missing for dwarf.AttrProducer ;(")
default:
panic("form unhandled for dwarf.AttrProducer, expect the unexpected ;(")
}
}
}
}
}
// log.Println(output)
return output
}
func printDwarfInformation(f *elf.File) {
dwarf, err := f.DWARF()
if err != nil {
log.Printf("failed getting DWARF info: %s", err)
return
}
rd := dwarf.Reader()
for {
entry, err := rd.Next()
if err != nil {
log.Printf("failed getting next DWARF entry: %s", err)
return
}
if entry == nil {
// All done
return
}
log.Printf("got entry with tag: %s, and offset %d", entry.Tag, entry.Offset)
for _, field := range entry.Field {
log.Printf("\t%s: %v", field.Attr, field.Val)
}
}
}
func producer(debugfile *elf.File, dwzfile *elf.File, debug_package string, debug_file string) []string {
var output []string
// iterate over all CUs present in debugfile
d, e := debugfile.DWARF() // increases memory usage by 2x to 3x!
if e != nil {
log.Println(e, debug_package, debug_file)
return output
}
reader := d.Reader()
for {
entry, err := reader.Next()
if err != nil {
log.Println(err, debug_file, debug_package)
break
}
if entry == nil {
break
}
if entry.Tag == dwarf.TagCompileUnit {
for _, f := range entry.Field {
if f.Attr == dwarf.AttrName {
switch f.Val.(type) {
case string:
output = append(output, f.Val.(string))
default:
// distinguish between dwarf.OffsetStrpAlt, and dwarf.OffsetRefAlt
switch f.Class {
case dwarf.ClassStringAlt:
output = append(output, dwzparser(dwzfile, (int64)(f.Val.(int64)), debug_package, debug_file)) // this are filenames!
dummy := 0
_ = dummy
// panic("dwarf.ClassStringAlt is not handled currently in dwarf.AttrName, expect the unexpected ;(")
case dwarf.ClassReferenceAlt:
panic("dwarf.ClassReferenceAlt is not handled currently in dwarf.AttrName, expect the unexpected ;(")
default:
panic("form unhandled for dwarf.AttrName, expect the unexpected ;(")
}
}
} else if f.Attr == dwarf.AttrProducer {
switch f.Val.(type) {
case string:
output = append(output, f.Val.(string))
default:
// distinguish between dwarf.OffsetStrpAlt, and dwarf.OffsetRefAlt
switch f.Class {
case dwarf.ClassStringAlt:
output = append(output, dwzparser(dwzfile, (int64)(f.Val.(int64)), debug_package, debug_file))
case dwarf.ClassReferenceAlt:
panic("dwarf.ClassReferenceAlt is not handled currently in dwarf.AttrProducer, expect the unexpected ;(")
default:
panic("form unhandled for dwarf.AttrProducer, expect the unexpected ;(")
}
}
}
}
}
}
// log.Println(output)
return output
}