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36 * @(#)nlist.h 8.2 (Berkeley) 1/21/94
41 #ifndef _SYS_NLIST_AOUT_H_
42 #define _SYS_NLIST_AOUT_H_
45 * Symbol table entries in a.out files.
49 * Layout of each symbol. The "#ifdef _AOUT_INCLUDE_" is so that
50 * programs including nlist.h can initialize nlist structures
56 const char *n_name; /* symbol name (in memory) */
57 long n_strx; /* file string table offset (on disk) */
60 const char *n_name; /* symbol name (in memory) */
62 unsigned char n_type; /* type defines */
63 char n_other; /* ".type" and binding information */
64 short n_desc; /* used by stab entries */
65 unsigned long n_value; /* address/value of the symbol */
68 #define n_hash n_desc /* used internally by ld(1); XXX */
73 #define N_UNDF 0x00 /* undefined */
74 #define N_ABS 0x02 /* absolute address */
75 #define N_TEXT 0x04 /* text segment */
76 #define N_DATA 0x06 /* data segment */
77 #define N_BSS 0x08 /* bss segment */
78 #define N_INDR 0x0a /* alias definition */
79 #define N_SIZE 0x0c /* pseudo type, defines a symbol's size */
80 #define N_COMM 0x12 /* common reference */
82 #define N_SETA 0x14 /* Absolute set element symbol */
83 #define N_SETT 0x16 /* Text set element symbol */
84 #define N_SETD 0x18 /* Data set element symbol */
85 #define N_SETB 0x1a /* Bss set element symbol */
86 #define N_SETV 0x1c /* Pointer to set vector in data area. */
87 /* end GNU extensions */
88 #define N_FN 0x1e /* file name (N_EXT on) */
89 #define N_WARN 0x1e /* warning message (N_EXT off) */
91 #define N_EXT 0x01 /* external (global) bit, OR'ed in */
92 #define N_TYPE 0x1e /* mask for all the type bits */
93 #define N_STAB 0xe0 /* mask for debugger symbols -- stab(5) */
96 * Defines for n_other. It contains the ".type" (AUX) field in the least
97 * significant 4 bits, and the binding (for weak symbols) in the most
100 #define N_AUX(p) ((p)->n_other & 0xf)
101 #define N_BIND(p) (((unsigned int)(p)->n_other >> 4) & 0xf)
102 #define N_OTHER(r, v) (((unsigned int)(r) << 4) | ((v) & 0xf))
104 #define AUX_OBJECT 1 /* data object */
105 #define AUX_FUNC 2 /* function */
107 /*#define BIND_LOCAL 0 not used */
108 /*#define BIND_GLOBAL 1 not used */
109 #define BIND_WEAK 2 /* weak binding */
111 #define N_FORMAT "%08x" /* namelist value format; XXX */
113 #endif /* !_SYS_NLIST_AOUT_H_ */