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dwarf_formblock(3) [freebsd man page]

DWARF_FORMBLOCK(3)					   BSD Library Functions Manual 					DWARF_FORMBLOCK(3)

NAME
dwarf_formblock -- return the value of a BLOCK attribute LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> int dwarf_formblock(Dwarf_Attribute attr, Dwarf_Block **ret, Dwarf_Error *err); DESCRIPTION
Function dwarf_formblock() sets the location pointed to by argument ret to a pointer to a Dwarf_Block structure containing the value of the attribute referenced by argument attr. The form of argument attr must be one of DW_FORM_block, DW_FORM_block1, DW_FORM_block2 or DW_FORM_block4. If argument err is not NULL, it will be used to return an error descriptor in case of an error. Memory Management The memory area referenced by the returned pointer is managed by the DWARF(3) library. The application should not attempt to free this mem- ory area. Portable code may indicate that the memory area is to be freed by by using dwarf_dealloc(3). RETURN VALUES
Function dwarf_formblock() returns DW_DLV_OK on success. In case of an error, it returns DW_DLV_ERROR and sets argument err. ERRORS
Function dwarf_formblock() may fail with the following errors: [DW_DLE_ARGUMENT] Either of arguments attr or ret 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_formflag(3), dwarf_formref(3), dwarf_formsdata(3), dwarf_formsig8(3), dwarf_formstring(3), dwarf_formudata(3), dwarf_hasattr(3) BSD
July 23, 2010 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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