| DWARF_GET_ABBREV(3) | Library Functions Manual | DWARF_GET_ABBREV(3) | 
dwarf_get_abbrev —
#include <libdwarf.h>
int
  
  dwarf_get_abbrev(Dwarf_Debug
    dbg, Dwarf_Unsigned offset,
    Dwarf_Abbrev *ret_abbrev,
    Dwarf_Unsigned *length, Dwarf_Unsigned
    *attr_count, Dwarf_Error *err);
dwarf_get_abbrev() retrieves information about
  an abbreviation from the DWARF abbreviations section,
  “.debug_abbrev”. Abbreviation information is returned using an
  opaque descriptor of type Dwarf_Abbrev. The returned
  Dwarf_Abbrev descriptor may then be passed to the other
  abbreviation related APIs in the DWARF(3) API to retrieve specific information
  about the abbreviation.
Argument dbg should reference a DWARF debug context allocated using dwarf_init(3).
Argument offset should be an offset, relative to the “.debug_abbrev” section, to the start of an abbreviation entry.
Argument ret_abbrev should point to a location that will hold a pointer to the returned Dwarf_Abbrev descriptor.
Argument length should point to a location that will hold the number of bytes used by the abbrevation in the DWARF “.debug_abbrev” section.
Argument attr_count should point to a location that will hold the number of attributes in the abbrevation.
If argument err is not
    NULL, it will be used to store error information in
    case of an error.
dwarf_dealloc() with the
  allocation type DW_DLA_ABBREV to free the memory area
  when the Dwarf_Abbrev descriptor is no longer needed.
dwarf_get_abbrev() returns
  DW_DLV_OK when it succeeds. It returns
  DW_DLV_NO_ENTRY if there is no abbreviation
  information at offset offset. In case of an error, it
  returns DW_DLV_ERROR and sets the argument
  err.
Dwarf_Debug dbg;
Dwarf_Abbrev ab;
Dwarf_Off aboff;
Dwarf_Unsigned length, attr_count;
Dwarf_Half tag;
Dwarf_Error de;
int ret;
while ((ret = dwarf_next_cu_header(dbg, NULL, NULL, &aboff,
    NULL, NULL, &de)) ==  DW_DLV_OK) {
	while ((ret = dwarf_get_abbrev(re->dbg, aboff, &ab, &length,
	    &attr_count, &de)) == DW_DLV_OK) {
		if (length == 1)	/* Last entry. */
			break;
		aboff += length;
		if (dwarf_get_abbrev_tag(ab, &tag, &de) != DW_DLV_OK) {
			warnx("dwarf_get_abbrev_tag failed: %s",
			    dwarf_errmsg(de));
			continue;
		}
	if (ret != DW_DLV_OK)
		warnx("dwarf_get_abbrev: %s", dwarf_errmsg(de));
}
if (ret == DW_DLV_ERROR)
	warnx("dwarf_next_cu_header: %s", dwarf_errmsg(de));
dwarf_get_abbrev() can fail with:
DW_DLE_ARGUMENT]NULL.DW_DLE_NO_ENTRY]| March 27, 2011 | NetBSD 10.0 |