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DWARF_GET_FUNCS(3) FreeBSD Library Functions Manual DWARF_GET_FUNCS(3) NAME dwarf_get_funcs, dwarf_func_cu_offset, dwarf_func_die_offset, dwarf_func_name_offsets, dwarf_funcname - retrieve information about static functions LIBRARY DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS #include <libdwarf.h> int dwarf_get_funcs(Dwarf_Debug dbg, Dwarf_Func **funcs, Dwarf_Signed *nfuncs, Dwarf_Error *err); int dwarf_func_cu_offset(Dwarf_Func func, Dwarf_Off *cu_offset, Dwarf_Error *err); int dwarf_func_die_offset(Dwarf_Func func, Dwarf_Off *die_offset, Dwarf_Error *err); int dwarf_func_name_offsets(Dwarf_Func func, char **name, Dwarf_Off *die_offset, Dwarf_Off *cu_die_offset, Dwarf_Error *err); int dwarf_funcname(Dwarf_Func func, char **name, Dwarf_Error *err); DESCRIPTION These functions retrieve information about static functions from the lookup tables in the (SGI-specific) ".debug_funcnames" section. Information about these functions is returned using opaque descriptors of type Dwarf_Func. Applications need to use the functions described below to retrieve the name and offset information contained in these descriptors. Function dwarf_get_funcs() retrieves descriptors for all the static functions associated with the DWARF debug context specified by argument dbg. The argument funcs should point to a location that will be set to a pointer to an array of Dwarf_Func descriptors. The argument nfuncs should point to a location that will be set to the number of descriptors returned. Function dwarf_func_cu_offset() returns the offset, relative to the ".debug_info" section, of the compilation unit that contains the debugging information entry associated with the argument func. Argument cu_offset should point to a location that will hold the returned offset. Function dwarf_func_die_offset() retrieves the offset, relative to the ".debug_info" section, of the debugging information entry associated with the argument func, and stores it into the location pointed to by the argument die_offset. Function dwarf_func_name_offsets() retrieves the name and offsets for the debugging information entry for argument func. Argument name should associated with argument func. Function dwarf_funcname() sets the location pointed to by argument name to a pointer to a NUL-terminated string holding the name of the debugging information entry associated with the argument func. Memory Management The memory area used for the array of Dwarf_Func descriptors returned in argument funcs by function dwarf_get_funcs() is owned by the DWARF Access Library (libdwarf, -ldwarf). Application code should not attempt to directly free this pointer. Portable code should instead use the function dwarf_funcs_dealloc(3) to indicate that the memory area may be freed. The memory area used for the string returned in the name argument to functions dwarf_func_name_offsets() and dwarf_funcname() is owned by the DWARF Access Library (libdwarf, -ldwarf). Portable code should indicate that the memory area can be freed using the dwarf_dealloc(3) function. Error Returns If argument err is not NULL, these functions will use it to store error information, in case of an error. RETURN VALUES On success, these functions returns DW_DLV_OK. In case of an error, they return DW_DLV_ERROR and set the argument err. ERRORS These functions may fail with the following errors: [DW_DLE_ARGUMENT] One of the arguments cu_die_offset, cu_offset, dbg, die_offset, func, funcs, name, or nfuncs was NULL. [DW_DLE_NO_ENTRY] The DWARF debugging context referenced by argument dbg did not contain information about static functions. SEE ALSO dwarf(3), dwarf_funcs_dealloc(3), dwarf_get_cu_die_offset_given_cu_header_offset(3) FreeBSD 14.0-RELEASE-p11 April 10, 2011 FreeBSD 14.0-RELEASE-p11