1 #ifndef __A_OUT_GNU_H__ 2 #define __A_OUT_GNU_H__ 3 4 #define __GNU_EXEC_MACROS__ 5 6 #ifndef __STRUCT_EXEC_OVERRIDE__ 7 8 #include <asm/a.out.h> 9 10 #endif /* __STRUCT_EXEC_OVERRIDE__ */ 11 12 /* these go in the N_MACHTYPE field */ 13 enum machine_type { 14 #if defined (M_OLDSUN2) 15 M__OLDSUN2 = M_OLDSUN2, 16 #else 17 M_OLDSUN2 = 0, 18 #endif 19 #if defined (M_68010) 20 M__68010 = M_68010, 21 #else 22 M_68010 = 1, 23 #endif 24 #if defined (M_68020) 25 M__68020 = M_68020, 26 #else 27 M_68020 = 2, 28 #endif 29 #if defined (M_SPARC) 30 M__SPARC = M_SPARC, 31 #else 32 M_SPARC = 3, 33 #endif 34 /* skip a bunch so we don't run into any of sun's numbers */ 35 M_386 = 100, 36 M_MIPS1 = 151, /* MIPS R3000/R3000 binary */ 37 M_MIPS2 = 152 /* MIPS R6000/R4000 binary */ 38 }; 39 40 #if !defined (N_MAGIC) 41 #define N_MAGIC(exec) ((exec).a_info & 0xffff) 42 #endif 43 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) 44 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) 45 #define N_SET_INFO(exec, magic, type, flags) \ 46 ((exec).a_info = ((magic) & 0xffff) \ 47 | (((int)(type) & 0xff) << 16) \ 48 | (((flags) & 0xff) << 24)) 49 #define N_SET_MAGIC(exec, magic) \ 50 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) 51 52 #define N_SET_MACHTYPE(exec, machtype) \ 53 ((exec).a_info = \ 54 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) 55 56 #define N_SET_FLAGS(exec, flags) \ 57 ((exec).a_info = \ 58 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) 59 60 /* Code indicating object file or impure executable. */ 61 #define OMAGIC 0407 62 /* Code indicating pure executable. */ 63 #define NMAGIC 0410 64 /* Code indicating demand-paged executable. */ 65 #define ZMAGIC 0413 66 /* This indicates a demand-paged executable with the header in the text. 67 The first page is unmapped to help trap NULL pointer references */ 68 #define QMAGIC 0314 69 70 /* Code indicating core file. */ 71 #define CMAGIC 0421 72 73 #if !defined (N_BADMAG) 74 #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ 75 && N_MAGIC(x) != NMAGIC \ 76 && N_MAGIC(x) != ZMAGIC \ 77 && N_MAGIC(x) != QMAGIC) 78 #endif 79 80 #define _N_HDROFF(x) (1024 - sizeof (struct exec)) 81 82 #if !defined (N_TXTOFF) 83 #define N_TXTOFF(x) \ 84 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ 85 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) 86 #endif 87 88 #if !defined (N_DATOFF) 89 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) 90 #endif 91 92 #if !defined (N_TRELOFF) 93 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) 94 #endif 95 96 #if !defined (N_DRELOFF) 97 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) 98 #endif 99 100 #if !defined (N_SYMOFF) 101 #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) 102 #endif 103 104 #if !defined (N_STROFF) 105 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) 106 #endif 107 108 /* Address of text segment in memory after it is loaded. */ 109 #if !defined (N_TXTADDR) 110 #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0) 111 #endif 112 113 /* Address of data segment in memory after it is loaded. 114 Note that it is up to you to define SEGMENT_SIZE 115 on machines not listed here. */ 116 #if defined(vax) || defined(hp300) || defined(pyr) 117 #define SEGMENT_SIZE page_size 118 #endif 119 #ifdef sony 120 #define SEGMENT_SIZE 0x2000 121 #endif /* Sony. */ 122 #ifdef is68k 123 #define SEGMENT_SIZE 0x20000 124 #endif 125 #if defined(m68k) && defined(PORTAR) 126 #define PAGE_SIZE 0x400 127 #define SEGMENT_SIZE PAGE_SIZE 128 #endif 129 130 #ifdef linux 131 #include <asm/page.h> 132 #if defined(__i386__) || defined(__mc68000__) 133 #define SEGMENT_SIZE 1024 134 #else 135 #ifndef SEGMENT_SIZE 136 #define SEGMENT_SIZE PAGE_SIZE 137 #endif 138 #endif 139 #endif 140 141 #define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE) 142 143 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 144 145 #ifndef N_DATADDR 146 #define N_DATADDR(x) \ 147 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ 148 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 149 #endif 150 151 /* Address of bss segment in memory after it is loaded. */ 152 #if !defined (N_BSSADDR) 153 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 154 #endif 155 156 #if !defined (N_NLIST_DECLARED) 158 struct nlist { 159 union { 160 char *n_name; 161 struct nlist *n_next; 162 long n_strx; 163 } n_un; 164 unsigned char n_type; 165 char n_other; 166 short n_desc; 167 unsigned long n_value; 168 }; 169 #endif /* no N_NLIST_DECLARED. */ 170 171 #if !defined (N_UNDF) 172 #define N_UNDF 0 173 #endif 174 #if !defined (N_ABS) 175 #define N_ABS 2 176 #endif 177 #if !defined (N_TEXT) 178 #define N_TEXT 4 179 #endif 180 #if !defined (N_DATA) 181 #define N_DATA 6 182 #endif 183 #if !defined (N_BSS) 184 #define N_BSS 8 185 #endif 186 #if !defined (N_FN) 187 #define N_FN 15 188 #endif 189 190 #if !defined (N_EXT) 191 #define N_EXT 1 192 #endif 193 #if !defined (N_TYPE) 194 #define N_TYPE 036 195 #endif 196 #if !defined (N_STAB) 197 #define N_STAB 0340 198 #endif 199 200 /* The following type indicates the definition of a symbol as being 201 an indirect reference to another symbol. The other symbol 202 appears as an undefined reference, immediately following this symbol. 203 204 Indirection is asymmetrical. The other symbol's value will be used 205 to satisfy requests for the indirect symbol, but not vice versa. 206 If the other symbol does not have a definition, libraries will 207 be searched to find a definition. */ 208 #define N_INDR 0xa 209 210 /* The following symbols refer to set elements. 211 All the N_SET[ATDB] symbols with the same name form one set. 212 Space is allocated for the set in the text section, and each set 213 element's value is stored into one word of the space. 214 The first word of the space is the length of the set (number of elements). 215 216 The address of the set is made into an N_SETV symbol 217 whose name is the same as the name of the set. 218 This symbol acts like a N_DATA global symbol 219 in that it can satisfy undefined external references. */ 220 221 /* These appear as input to LD, in a .o file. */ 222 #define N_SETA 0x14 /* Absolute set element symbol */ 223 #define N_SETT 0x16 /* Text set element symbol */ 224 #define N_SETD 0x18 /* Data set element symbol */ 225 #define N_SETB 0x1A /* Bss set element symbol */ 226 227 /* This is output from LD. */ 228 #define N_SETV 0x1C /* Pointer to set vector in data area. */ 229 230 #if !defined (N_RELOCATION_INFO_DECLARED) 232 /* This structure describes a single relocation to be performed. 233 The text-relocation section of the file is a vector of these structures, 234 all of which apply to the text section. 235 Likewise, the data-relocation section applies to the data section. */ 236 237 struct relocation_info 238 { 239 /* Address (within segment) to be relocated. */ 240 int r_address; 241 /* The meaning of r_symbolnum depends on r_extern. */ 242 unsigned int r_symbolnum:24; 243 /* Nonzero means value is a pc-relative offset 244 and it should be relocated for changes in its own address 245 as well as for changes in the symbol or section specified. */ 246 unsigned int r_pcrel:1; 247 /* Length (as exponent of 2) of the field to be relocated. 248 Thus, a value of 2 indicates 1<<2 bytes. */ 249 unsigned int r_length:2; 250 /* 1 => relocate with value of symbol. 251 r_symbolnum is the index of the symbol 252 in file's the symbol table. 253 0 => relocate with the address of a segment. 254 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS 255 (the N_EXT bit may be set also, but signifies nothing). */ 256 unsigned int r_extern:1; 257 /* Four bits that aren't used, but when writing an object file 258 it is desirable to clear them. */ 259 #ifdef NS32K 260 unsigned r_bsr:1; 261 unsigned r_disp:1; 262 unsigned r_pad:2; 263 #else 264 unsigned int r_pad:4; 265 #endif 266 }; 267 #endif /* no N_RELOCATION_INFO_DECLARED. */ 268 269 270 #endif /* __A_OUT_GNU_H__ */ 271
