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dwarf_get_abbrev_tag(3) [freebsd man page]

DWARF_GET_ABBREV_TAG(3) 				   BSD Library Functions Manual 				   DWARF_GET_ABBREV_TAG(3)

NAME
dwarf_get_abbrev_tag -- retrieve the tag for an abbreviation LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> int dwarf_get_abbrev_tag(Dwarf_Abbrev abbrev, Dwarf_Half *ret, Dwarf_Error *err); DESCRIPTION
Function dwarf_get_abbrev_tag() retrieves the tag for the abbreviation entry descriptor referenced by argument abbrev. Argument ret should point to a location which will hold the returned abbreviation tag. If argument err is not NULL, it will be used to store error information in case of an error. RETURN VALUES
Function dwarf_get_abbrev_tag() returns DW_DLV_OK when it succeeds. In case of an error, it returns DW_DLV_ERROR and sets the argument err. ERRORS
Function dwarf_get_abbrev_tag() can fail with: [DW_DLE_ARGUMENT] Either of arguments abbrev or ret was NULL. SEE ALSO
dwarf(3), dwarf_get_abbrev(3), dwarf_get_abbrev_code(3), dwarf_get_abbrev_children_flag(3), dwarf_get_abbrev_entry(3) BSD
March 13, 2011 BSD

Check Out this Related Man Page

DWARF_GET_ABBREV_ENTRY(3)				   BSD Library Functions Manual 				 DWARF_GET_ABBREV_ENTRY(3)

NAME
dwarf_get_abbrev_entry -- retrieve attribute information from an abbreviation descriptor LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> int dwarf_get_abbrev_entry(Dwarf_Abbrev abbrev, Dwarf_Signed ndx, Dwarf_Half *code, Dwarf_Signed *form, Dwarf_Off *offset, Dwarf_Error *err); DESCRIPTION
Function dwarf_get_abbrev_entry() retrieves attribute information from a DWARF abbreviation descriptor. Argument abbrev should be a valid abbreviation descriptor, as returned by function dwarf_get_abbrev(3). Argument ndx specifies the 0-based index of the attribute. The total count of the attributes contained in the abbreviation entry can be retrieved using the function dwarf_get_abbrev(3). Argument code should point to a location which will hold a returned attribute code. Argument form should point to a location which will hold the returned form of the attribute. Argument offset should point to a location which will hold a returned offset, relative to the ``.debug_abbrev'' section, for the specified attribute. If argument err is not NULL, it will be used to return an error descriptor in case of an error. RETURN VALUES
Function dwarf_get_abbrev_entry() returns DW_DLV_OK when it succeeds. It returns DW_DLV_NO_ENTRY if the attribute index specified by argu- ment ndx is out of range. In case of an error, it returns DW_DLV_ERROR and sets the argument err. ERRORS
Function dwarf_get_abbrev_entry() can fail with: [DW_DLE_ARGUMENT] One of the arguments abbrev, code, form or offset was NULL. [DW_DLE_NO_ENTRY] The attribute index specified by argument ndx was out of range. EXAMPLE
To loop through all the attribute entries contained in the abbreviation section, use: Dwarf_Debug dbg; Dwarf_Abbrev ab; Dwarf_Off aboff, atoff; Dwarf_Signed form; Dwarf_Half attr; Dwarf_Unsigned length, attr_count; Dwarf_Error de; int i, ret; /* ...allocate 'dbg' using dwarf_init(3) ... */ while ((ret = dwarf_next_cu_header(dbg, NULL, NULL, &aboff, NULL, NULL, &de)) == DW_DLV_OK) { while ((ret = dwarf_get_abbrev(dbg, aboff, &ab, &length, &attr_count, &de)) == DW_DLV_OK) { if (length == 1) /* Last entry. */ break; aboff += length; for (i = 0; (Dwarf_Unsigned) i < attr_count; i++) { if (dwarf_get_abbrev_entry(ab, i, &attr, &form, &atoff, &de) != DW_DLV_OK) { warnx("dwarf_get_abbrev_entry failed:" " %s", dwarf_errmsg(de)); continue; } /* .. use the retrieved information ... */ } } 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)); SEE ALSO
dwarf(3), dwarf_get_abbrev(3) BSD
April 02, 2011 BSD

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