DWARF_INIT(3) | Library Functions Manual | DWARF_INIT(3) |
int
dwarf_init(int fd, int mode, Dwarf_Handler errhand, Dwarf_Ptr errarg, Dwarf_Debug *ret, Dwarf_Error *err);
in
dwarf_elf_init(Elf *elf, int mode, Dwarf_Handler errhand, Dwarf_Ptr errarg, Dwarf_Debug *ret, Dwarf_Error *err);
For function dwarf_init(), argument fd denotes an open file descriptor referencing a compilation object. Function dwarf_init() implicitly allocates an Elf descriptor for argument fd.
For function dwarf_elf_init(), argument elf denotes a descriptor returned by elf_begin(3) or elf_memory(3).
Argument mode specifies the access mode desired. It should be at least as permissive as the mode with which the file descriptor fd or the ELF descriptor elf was created with. Legal values for argument mode are:
Argument errhand denotes a function to be called in case of an error. If this argument is NULL then a default error handling scheme is used. See dwarf(3) for a description of the error handling scheme used by the DWARF(3) library.
Argument errarg is passed to the error handler function denoted by argument errhand when it is invoked.
Argument ret points to the memory location that will hold a Dwarf_Debug reference on a successful call these functions.
Argument err references a memory location that would hold a Dwarf_Error descriptor in case of an error.
Dwarf_Error err; Dwarf_Debug dbg; if (dwarf_init(fd, DW_DLC_READ, NULL, NULL, &dbg, &err) != DW_DLV_OK) errx(EXIT_FAILURE, "dwarf_init: %s", dwarf_errmsg(err));
November 9, 2011 | NetBSD 7.2 |