1#ifndef __A_OUT_GNU_H__ 2#define __A_OUT_GNU_H__ 3 4#include <bits/a.out.h> 5 6#define __GNU_EXEC_MACROS__ 7 8struct exec 9{ 10 unsigned long a_info; /* Use macros N_MAGIC, etc for access. */ 11 unsigned int a_text; /* Length of text, in bytes. */ 12 unsigned int a_data; /* Length of data, in bytes. */ 13 unsigned int a_bss; /* Length of uninitialized data area for file, in bytes. */ 14 unsigned int a_syms; /* Length of symbol table data in file, in bytes. */ 15 unsigned int a_entry; /* Start address. */ 16 unsigned int a_trsize;/* Length of relocation info for text, in bytes. */ 17 unsigned int a_drsize;/* Length of relocation info for data, in bytes. */ 18}; 19 20enum machine_type 21{ 22 M_OLDSUN2 = 0, 23 M_68010 = 1, 24 M_68020 = 2, 25 M_SPARC = 3, 26 M_386 = 100, 27 M_MIPS1 = 151, 28 M_MIPS2 = 152 29}; 30 31#define N_MAGIC(exec) ((exec).a_info & 0xffff) 32#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) 33#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) 34#define N_SET_INFO(exec, magic, type, flags) \ 35 ((exec).a_info = ((magic) & 0xffff) \ 36 | (((int)(type) & 0xff) << 16) \ 37 | (((flags) & 0xff) << 24)) 38#define N_SET_MAGIC(exec, magic) \ 39 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff)) 40#define N_SET_MACHTYPE(exec, machtype) \ 41 ((exec).a_info = \ 42 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) 43#define N_SET_FLAGS(exec, flags) \ 44 ((exec).a_info = \ 45 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) 46 47/* Code indicating object file or impure executable. */ 48#define OMAGIC 0407 49/* Code indicating pure executable. */ 50#define NMAGIC 0410 51/* Code indicating demand-paged executable. */ 52#define ZMAGIC 0413 53/* This indicates a demand-paged executable with the header in the text. 54 The first page is unmapped to help trap NULL pointer references. */ 55#define QMAGIC 0314 56/* Code indicating core file. */ 57#define CMAGIC 0421 58 59#define N_TRSIZE(a) ((a).a_trsize) 60#define N_DRSIZE(a) ((a).a_drsize) 61#define N_SYMSIZE(a) ((a).a_syms) 62#define N_BADMAG(x) \ 63 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \ 64 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC) 65#define _N_HDROFF(x) (1024 - sizeof (struct exec)) 66#define N_TXTOFF(x) \ 67 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ 68 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) 69#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) 70#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) 71#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) 72#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) 73#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) 74 75/* Address of text segment in memory after it is loaded. */ 76#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? 4096 : 0) 77 78/* Address of data segment in memory after it is loaded. */ 79#define SEGMENT_SIZE 1024 80 81#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) 82#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 83 84#define N_DATADDR(x) \ 85 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ 86 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 87#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 88 89#if !defined (N_NLIST_DECLARED) 90struct nlist 91{ 92 union 93 { 94 char *n_name; 95 struct nlist *n_next; 96 long n_strx; 97 } n_un; 98 unsigned char n_type; 99 char n_other; 100 short n_desc; 101 unsigned long n_value; 102}; 103#endif /* no N_NLIST_DECLARED. */ 104 105#define N_UNDF 0 106#define N_ABS 2 107#define N_TEXT 4 108#define N_DATA 6 109#define N_BSS 8 110#define N_FN 15 111#define N_EXT 1 112#define N_TYPE 036 113#define N_STAB 0340 114#define N_INDR 0xa 115#define N_SETA 0x14 /* Absolute set element symbol. */ 116#define N_SETT 0x16 /* Text set element symbol. */ 117#define N_SETD 0x18 /* Data set element symbol. */ 118#define N_SETB 0x1A /* Bss set element symbol. */ 119#define N_SETV 0x1C /* Pointer to set vector in data area. */ 120 121#if !defined (N_RELOCATION_INFO_DECLARED) 122/* This structure describes a single relocation to be performed. 123 The text-relocation section of the file is a vector of these structures, 124 all of which apply to the text section. 125 Likewise, the data-relocation section applies to the data section. */ 126 127struct relocation_info 128{ 129 int r_address; 130 unsigned int r_symbolnum:24; 131 unsigned int r_pcrel:1; 132 unsigned int r_length:2; 133 unsigned int r_extern:1; 134 unsigned int r_pad:4; 135}; 136#endif /* no N_RELOCATION_INFO_DECLARED. */ 137 138#endif /* __A_OUT_GNU_H__ */ 139