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 #if !defined(SEGMENT_SIZE) 131 #ifdef linux 132 #if defined(__i386__) || defined(__mc68000__) 133 #define SEGMENT_SIZE 1024 134 #elif defined(__sparc__) 135 #define SEGMENT_SIZE 0x2000 136 #else 137 #if defined(PAGE_SIZE) 138 #define SEGMENT_SIZE PAGE_SIZE 139 #endif 140 #endif 141 #endif 142 #endif 143 144 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) 145 146 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 147 148 #ifndef N_DATADDR 149 #define N_DATADDR(x) \ 150 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ 151 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 152 #endif 153 154 /* Address of bss segment in memory after it is loaded. */ 155 #if !defined (N_BSSADDR) 156 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 157 #endif 158 159 #if !defined (N_NLIST_DECLARED) 160 struct nlist { 161 union { 162 char *n_name; 163 struct nlist *n_next; 164 long n_strx; 165 } n_un; 166 unsigned char n_type; 167 char n_other; 168 short n_desc; 169 unsigned long n_value; 170 }; 171 #endif /* no N_NLIST_DECLARED. */ 172 173 #if !defined (N_UNDF) 174 #define N_UNDF 0 175 #endif 176 #if !defined (N_ABS) 177 #define N_ABS 2 178 #endif 179 #if !defined (N_TEXT) 180 #define N_TEXT 4 181 #endif 182 #if !defined (N_DATA) 183 #define N_DATA 6 184 #endif 185 #if !defined (N_BSS) 186 #define N_BSS 8 187 #endif 188 #if !defined (N_FN) 189 #define N_FN 15 190 #endif 191 192 #if !defined (N_EXT) 193 #define N_EXT 1 194 #endif 195 #if !defined (N_TYPE) 196 #define N_TYPE 036 197 #endif 198 #if !defined (N_STAB) 199 #define N_STAB 0340 200 #endif 201 202 /* The following type indicates the definition of a symbol as being 203 an indirect reference to another symbol. The other symbol 204 appears as an undefined reference, immediately following this symbol. 205 206 Indirection is asymmetrical. The other symbol's value will be used 207 to satisfy requests for the indirect symbol, but not vice versa. 208 If the other symbol does not have a definition, libraries will 209 be searched to find a definition. */ 210 #define N_INDR 0xa 211 212 /* The following symbols refer to set elements. 213 All the N_SET[ATDB] symbols with the same name form one set. 214 Space is allocated for the set in the text section, and each set 215 element's value is stored into one word of the space. 216 The first word of the space is the length of the set (number of elements). 217 218 The address of the set is made into an N_SETV symbol 219 whose name is the same as the name of the set. 220 This symbol acts like a N_DATA global symbol 221 in that it can satisfy undefined external references. */ 222 223 /* These appear as input to LD, in a .o file. */ 224 #define N_SETA 0x14 /* Absolute set element symbol */ 225 #define N_SETT 0x16 /* Text set element symbol */ 226 #define N_SETD 0x18 /* Data set element symbol */ 227 #define N_SETB 0x1A /* Bss set element symbol */ 228 229 /* This is output from LD. */ 230 #define N_SETV 0x1C /* Pointer to set vector in data area. */ 231 232 #if !defined (N_RELOCATION_INFO_DECLARED) 233 /* This structure describes a single relocation to be performed. 234 The text-relocation section of the file is a vector of these structures, 235 all of which apply to the text section. 236 Likewise, the data-relocation section applies to the data section. */ 237 238 struct relocation_info 239 { 240 /* Address (within segment) to be relocated. */ 241 int r_address; 242 /* The meaning of r_symbolnum depends on r_extern. */ 243 unsigned int r_symbolnum:24; 244 /* Nonzero means value is a pc-relative offset 245 and it should be relocated for changes in its own address 246 as well as for changes in the symbol or section specified. */ 247 unsigned int r_pcrel:1; 248 /* Length (as exponent of 2) of the field to be relocated. 249 Thus, a value of 2 indicates 1<<2 bytes. */ 250 unsigned int r_length:2; 251 /* 1 => relocate with value of symbol. 252 r_symbolnum is the index of the symbol 253 in file's the symbol table. 254 0 => relocate with the address of a segment. 255 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS 256 (the N_EXT bit may be set also, but signifies nothing). */ 257 unsigned int r_extern:1; 258 /* Four bits that aren't used, but when writing an object file 259 it is desirable to clear them. */ 260 #ifdef NS32K 261 unsigned r_bsr:1; 262 unsigned r_disp:1; 263 unsigned r_pad:2; 264 #else 265 unsigned int r_pad:4; 266 #endif 267 }; 268 #endif /* no N_RELOCATION_INFO_DECLARED. */ 269 270 271 #endif /* __A_OUT_GNU_H__ */ 272