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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_HASFORM(3)					   BSD Library Functions Manual 					  DWARF_HASFORM(3)

NAME
dwarf_hasform, dwarf_whatform, dwarf_whatform_direct -- query attribute forms LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> int dwarf_hasform(Dwarf_Attribute attr, Dwarf_Half form, Dwarf_Bool *ret, Dwarf_Error *err); int dwarf_whatform(Dwarf_Attribute attr, Dwarf_Half *retform, Dwarf_Error *err); int dwarf_whatform_direct(Dwarf_Attribute attr, Dwarf_Half *retform, Dwarf_Error *err); DESCRIPTION
Function dwarf_hasform() indicates whether the DWARF attribute denoted by argument attr has the attribute form specified by argument form. If the attribute has the specified form, then argument ret is set to a non-zero value, otherwise it is set to zero. If argument err is non- NULL, it will be used to return an error descriptor in case of an error. Function dwarf_whatform() sets the location specified by argument retform to the attribute form code for the DWARF attribute referenced by argument attr. If the attribute referenced by argument attr has an indirect form attribute, this function will return the final form for the attribute. If argument err is non-NULL, it will be used to return an error descriptor in case of an error. Function dwarf_whatform_direct() sets the location specified by argument retform to the attribute form code for the DWARF attribute refer- enced by argument attr. If the form is an indirect form, the function sets the location specified by argument retform to DW_FORM_indirect. If argument err is non-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_ERR and set argument err. ERRORS
These functions may fail with the following errors: [DW_DLE_ARGUMENT] Any of the arguments attr, ret, or retform was NULL. SEE ALSO
dwarf(3), dwarf_attr(3), dwarf_hasattr(3) BSD
May 22, 2010 BSD

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