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dwarf_get_funcs(3) [freebsd man page]

DWARF_GET_FUNCS(3)					   BSD 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 debug- ging 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 point to a location which will be set to a pointer to a NUL-terminated string containing the name of the associated debugging informa- tion entry. Argument die_offset should point to a location which will be set to the offset, relative to the ``.debug_info'' section, of the associated debugging information entry. Argument cu_die_offset should point to a location which will be set to the offset, relative to the ``.debug_info'' section, of the first debugging information entry in the compilation unit 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) func- tion. 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_get_cu_die_offset_given_cu_header_offset(3), dwarf_funcs_dealloc(3) BSD
April 10, 2011 BSD
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