DWARF_ATTROFFSET(3) BSD Library Functions Manual DWARF_ATTROFFSET(3)NAME
dwarf_attroffset -- retrieve the section-relative offset of an attribute descriptor
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h>
int
dwarf_attroffset(Dwarf_Attribute at, Dwarf_Off *ret_off, Dwarf_Error *err);
DESCRIPTION
Function dwarf_attroffset() retrieves the section-relative offset of the attribute descriptor referenced by argument at.
Argument ret_off should point to a location that is to hold the returned section-relative offset. If argument err is non-NULL, it is used to
return an error descriptor in case of an error.
RETURN VALUES
On success, function dwarf_attroffset() returns DW_DLV_OK.
In case of an error, it returns DW_DLV_ERROR and sets argument err.
COMPATIBILITY
This function is an extension to the DWARF(3) API.
ERRORS
The dwarf_attroffset() function may fail with the following errors:
[DW_DLE_ARGUMENT] Either of the arguments at or ret_off was NULL.
SEE ALSO dwarf(3), dwarf_attr(3)BSD December 20, 2014 BSD
Check Out this Related Man Page
DWARF_FORMREF(3) BSD Library Functions Manual DWARF_FORMREF(3)NAME
dwarf_formref, dwarf_global_formref -- retrieve offsets for REFERENCE class attributes
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h>
int
dwarf_formref(Dwarf_Attribute attr, Dwarf_Off *retoffset, Dwarf_Error *err);
int
dwarf_global_formref(Dwarf_Attribute attr, Dwarf_Off *retoffset, Dwarf_Error *err);
DESCRIPTION
These functions return the offsets associated with a DWARF attribute descriptor.
Function dwarf_formref() returns the compilation unit relative offset of the descriptor referenced by argument attr in the location pointed
to by argument retoffset. Argument attr must be a reference that is local to a compilation unit. Permitted forms for argument attr are
DW_FORM_ref1, DW_FORM_ref2, DW_FORM_ref4, DW_FORM_ref8 and DW_FORM_ref_udata.
Function dwarf_global_formref() returns the section-relative offset of the descriptor referenced by argument attr in the location pointed to
by argument retoffset. Argument attr should be a legal REFERENCE class form. Permitted forms for argument attr are: DW_FORM_ref_addr,
DW_FORM_ref_udata, DW_FORM_ref1, DW_FORM_ref2, DW_FORM_ref4, DW_FORM_ref8 and DW_FORM_sec_offset. The returned offset is relative to the
start of the ``.debug_info'' ELF section.
If argument err is not NULL, it will be used to return an error descriptor in case of an error.
RETURN VALUES
These functions return DW_DLV_OK on success. In case of an error, these functions return DW_DLV_ERROR and sets argument err.
ERRORS
These functions may fail with the following errors:
[DW_DLE_ARGUMENT] Either of arguments attr or retoffset was NULL.
[DW_DLE_ATTR_FORM_BAD] The attribute referenced by argument attr was not of a permitted kind.
SEE ALSO dwarf(3), dwarf_attr(3), dwarf_formblock(3), dwarf_formflag(3), dwarf_formsdata(3), dwarf_formsig8(3), dwarf_formstring(3),
dwarf_formudata(3), dwarf_hasattr(3)BSD June 21, 2010 BSD
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