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A.1 Non-Stab Symbol Types

The following types are used by the linker and assembler, not by stab directives. Since this document does not attempt to describe aspects of object file format other than the debugging format, no details are given.

0x0 N_UNDF
Undefined symbol
0x2 N_ABS
File scope absolute symbol
0x3 N_ABS | N_EXT
External absolute symbol
0x4 N_TEXT
File scope text symbol
0x5 N_TEXT | N_EXT
External text symbol
0x6 N_DATA
File scope data symbol
0x7 N_DATA | N_EXT
External data symbol
0x8 N_BSS
File scope BSS symbol
0x9 N_BSS | N_EXT
External BSS symbol
0x0c N_FN_SEQ
Same as N_FN, for Sequent compilers
0x0a N_INDR
Symbol is indirected to another symbol
0x12 N_COMM
Common—visible after shared library dynamic link
0x14 N_SETA
0x15 N_SETA | N_EXT
Absolute set element
0x16 N_SETT
0x17 N_SETT | N_EXT
Text segment set element
0x18 N_SETD
0x19 N_SETD | N_EXT
Data segment set element
0x1a N_SETB
0x1b N_SETB | N_EXT
BSS segment set element
0x1c N_SETV
0x1d N_SETV | N_EXT
Pointer to set vector
0x1e N_WARNING
Print a warning message during linking
0x1f N_FN
File name of a .o file