1 /* stabs.h a.out stabs */ 2 /* (c) 2015 Frank Wille */ 3 4 #ifndef STABS_H 5 #define STABS_H 6 7 /* stab definition node, created by .stab* directives */ 8 struct stabdef { 9 struct stabdef *next; 10 union { 11 char *ptr; 12 int32_t idx; 13 } name; 14 int type; 15 int other; 16 int desc; 17 symbol *base; 18 taddr value; 19 }; 20 21 extern struct stabdef *first_nlist,*last_nlist; 22 23 24 /* Symbol table entry format */ 25 struct nlist32 { 26 int32_t n_strx; /* string table offset */ 27 uint8_t n_type; /* type defines */ 28 int8_t n_other; /* spare */ 29 int16_t n_desc; /* used by stab entries */ 30 uint32_t n_value; /* address/value of the symbol */ 31 }; 32 33 #define N_EXT 0x01 /* external (global) bit, OR'ed in */ 34 #define N_TYPE 0x1e /* mask for all the type bits */ 35 #define N_STAB 0x0e0 /* mask for debugger symbols */ 36 37 /* symbol types */ 38 #define N_UNDF 0x00 /* undefined */ 39 #define N_ABS 0x02 /* absolute address */ 40 #define N_TEXT 0x04 /* text segment */ 41 #define N_DATA 0x06 /* data segment */ 42 #define N_BSS 0x08 /* bss segment */ 43 #define N_INDR 0x0a /* alias definition */ 44 #define N_SIZE 0x0c /* pseudo type, defines a symbol's size */ 45 #define N_WEAKU 0x0d /* GNU: Weak undefined symbol */ 46 #define N_WEAKA 0x0e /* GNU: Weak absolute symbol */ 47 #define N_WEAKT 0x0f /* GNU: Weak text symbol */ 48 #define N_WEAKD 0x10 /* GNU: Weak data symbol */ 49 #define N_WEAKB 0x11 /* GNU: Weak bss symbol */ 50 #define N_COMM 0x12 /* common reference */ 51 #define N_SETA 0x14 /* absolute set element symbol */ 52 #define N_SETT 0x16 /* text set element symbol */ 53 #define N_SETD 0x18 /* data set element symbol */ 54 #define N_SETB 0x1a /* bss set element symbol */ 55 #define N_SETV 0x1c /* set vector symbol */ 56 #define N_FN 0x1e /* file name (N_EXT on) */ 57 #define N_WARN 0x1e /* warning message (N_EXT off) */ 58 59 /* debugging symbols */ 60 #define N_GSYM 0x20 /* global symbol */ 61 #define N_FNAME 0x22 /* F77 function name */ 62 #define N_FUN 0x24 /* procedure name */ 63 #define N_STSYM 0x26 /* data segment variable */ 64 #define N_LCSYM 0x28 /* bss segment variable */ 65 #define N_MAIN 0x2a /* main function name */ 66 #define N_PC 0x30 /* global Pascal symbol */ 67 #define N_RSYM 0x40 /* register variable */ 68 #define N_SLINE 0x44 /* text segment line number */ 69 #define N_DSLINE 0x46 /* data segment line number */ 70 #define N_BSLINE 0x48 /* bss segment line number */ 71 #define N_SSYM 0x60 /* structure/union element */ 72 #define N_SO 0x64 /* main source file name */ 73 #define N_LSYM 0x80 /* stack variable */ 74 #define N_BINCL 0x82 /* include file beginning */ 75 #define N_SOL 0x84 /* included source file name */ 76 #define N_PSYM 0xa0 /* parameter variable */ 77 #define N_EINCL 0xa2 /* include file end */ 78 #define N_ENTRY 0xa4 /* alternate entry point */ 79 #define N_LBRAC 0xc0 /* left bracket */ 80 #define N_EXCL 0xc2 /* deleted include file */ 81 #define N_RBRAC 0xe0 /* right bracket */ 82 #define N_BCOMM 0xe2 /* begin common */ 83 #define N_ECOMM 0xe4 /* end common */ 84 #define N_ECOML 0xe8 /* end common (local name) */ 85 #define N_LENG 0xfe /* length of preceding entry */ 86 87 /* n_other & 0x0f */ 88 #define AUX_UNKNOWN 0 89 #define AUX_OBJECT 1 90 #define AUX_FUNC 2 91 #define AUX_LABEL 3 92 #define AUX_IGNORE 0xff /* vlink-specific, used to ignore this symbol */ 93 /* n_other & 0xf0 >> 4 */ 94 #define BIND_LOCAL 0 /* not used? */ 95 #define BIND_GLOBAL 1 /* not used? */ 96 #define BIND_WEAK 2 97 98 #endif /* STABS_H */ 99