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 8 struct 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 20 enum 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) 90 struct 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. */ 126 127 struct 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
