1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI__A_OUT_GNU_H__ 3 #define _UAPI__A_OUT_GNU_H__ 4 5 #define __GNU_EXEC_MACROS__ 6 7 #ifndef __STRUCT_EXEC_OVERRIDE__ 8 9 #include <asm/a.out.h> 10 11 #endif /* __STRUCT_EXEC_OVERRIDE__ */ 12 13 #ifndef __ASSEMBLY__ 14 15 /* these go in the N_MACHTYPE field */ 16 enum machine_type { 17 #if defined (M_OLDSUN2) 18 M__OLDSUN2 = M_OLDSUN2, 19 #else 20 M_OLDSUN2 = 0, 21 #endif 22 #if defined (M_68010) 23 M__68010 = M_68010, 24 #else 25 M_68010 = 1, 26 #endif 27 #if defined (M_68020) 28 M__68020 = M_68020, 29 #else 30 M_68020 = 2, 31 #endif 32 #if defined (M_SPARC) 33 M__SPARC = M_SPARC, 34 #else 35 M_SPARC = 3, 36 #endif 37 /* skip a bunch so we don't run into any of sun's numbers */ 38 M_386 = 100, 39 M_MIPS1 = 151, /* MIPS R3000/R3000 binary */ 40 M_MIPS2 = 152 /* MIPS R6000/R4000 binary */ 41 }; 42 43 #if !defined (N_MAGIC) 44 #define N_MAGIC(exec) ((exec).a_info & 0xffff) 45 #endif 46 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) 47 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) 48 #define N_SET_INFO(exec, magic, type, flags) \ 49 ((exec).a_info = ((magic) & 0xffff) \ 50 | (((int)(type) & 0xff) << 16) \ 51 | (((flags) & 0xff) << 24)) 52 #define N_SET_MAGIC(exec, magic) \ 53 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) 54 55 #define N_SET_MACHTYPE(exec, machtype) \ 56 ((exec).a_info = \ 57 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) 58 59 #define N_SET_FLAGS(exec, flags) \ 60 ((exec).a_info = \ 61 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) 62 63 /* Code indicating object file or impure executable. */ 64 #define OMAGIC 0407 65 /* Code indicating pure executable. */ 66 #define NMAGIC 0410 67 /* Code indicating demand-paged executable. */ 68 #define ZMAGIC 0413 69 /* This indicates a demand-paged executable with the header in the text. 70 The first page is unmapped to help trap NULL pointer references */ 71 #define QMAGIC 0314 72 73 /* Code indicating core file. */ 74 #define CMAGIC 0421 75 76 #if !defined (N_BADMAG) 77 #define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ 78 && N_MAGIC(x) != NMAGIC \ 79 && N_MAGIC(x) != ZMAGIC \ 80 && N_MAGIC(x) != QMAGIC) 81 #endif 82 83 #define _N_HDROFF(x) (1024 - sizeof (struct exec)) 84 85 #if !defined (N_TXTOFF) 86 #define N_TXTOFF(x) \ 87 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ 88 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) 89 #endif 90 91 #if !defined (N_DATOFF) 92 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) 93 #endif 94 95 #if !defined (N_TRELOFF) 96 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) 97 #endif 98 99 #if !defined (N_DRELOFF) 100 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) 101 #endif 102 103 #if !defined (N_SYMOFF) 104 #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) 105 #endif 106 107 #if !defined (N_STROFF) 108 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) 109 #endif 110 111 /* Address of text segment in memory after it is loaded. */ 112 #if !defined (N_TXTADDR) 113 #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0) 114 #endif 115 116 /* Address of data segment in memory after it is loaded. */ 117 #ifndef __KERNEL__ 118 #include <unistd.h> 119 #endif 120 #if defined(__i386__) || defined(__mc68000__) 121 #define SEGMENT_SIZE 1024 122 #else 123 #ifndef SEGMENT_SIZE 124 #ifndef __KERNEL__ 125 #define SEGMENT_SIZE getpagesize() 126 #endif 127 #endif 128 #endif 129 130 #define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE) 131 132 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 133 134 #ifndef N_DATADDR 135 #define N_DATADDR(x) \ 136 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ 137 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 138 #endif 139 140 /* Address of bss segment in memory after it is loaded. */ 141 #if !defined (N_BSSADDR) 142 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 143 #endif 144 145 #if !defined (N_NLIST_DECLARED) 147 struct nlist { 148 union { 149 char *n_name; 150 struct nlist *n_next; 151 long n_strx; 152 } n_un; 153 unsigned char n_type; 154 char n_other; 155 short n_desc; 156 unsigned long n_value; 157 }; 158 #endif /* no N_NLIST_DECLARED. */ 159 160 #if !defined (N_UNDF) 161 #define N_UNDF 0 162 #endif 163 #if !defined (N_ABS) 164 #define N_ABS 2 165 #endif 166 #if !defined (N_TEXT) 167 #define N_TEXT 4 168 #endif 169 #if !defined (N_DATA) 170 #define N_DATA 6 171 #endif 172 #if !defined (N_BSS) 173 #define N_BSS 8 174 #endif 175 #if !defined (N_FN) 176 #define N_FN 15 177 #endif 178 179 #if !defined (N_EXT) 180 #define N_EXT 1 181 #endif 182 #if !defined (N_TYPE) 183 #define N_TYPE 036 184 #endif 185 #if !defined (N_STAB) 186 #define N_STAB 0340 187 #endif 188 189 /* The following type indicates the definition of a symbol as being 190 an indirect reference to another symbol. The other symbol 191 appears as an undefined reference, immediately following this symbol. 192 193 Indirection is asymmetrical. The other symbol's value will be used 194 to satisfy requests for the indirect symbol, but not vice versa. 195 If the other symbol does not have a definition, libraries will 196 be searched to find a definition. */ 197 #define N_INDR 0xa 198 199 /* The following symbols refer to set elements. 200 All the N_SET[ATDB] symbols with the same name form one set. 201 Space is allocated for the set in the text section, and each set 202 element's value is stored into one word of the space. 203 The first word of the space is the length of the set (number of elements). 204 205 The address of the set is made into an N_SETV symbol 206 whose name is the same as the name of the set. 207 This symbol acts like a N_DATA global symbol 208 in that it can satisfy undefined external references. */ 209 210 /* These appear as input to LD, in a .o file. */ 211 #define N_SETA 0x14 /* Absolute set element symbol */ 212 #define N_SETT 0x16 /* Text set element symbol */ 213 #define N_SETD 0x18 /* Data set element symbol */ 214 #define N_SETB 0x1A /* Bss set element symbol */ 215 216 /* This is output from LD. */ 217 #define N_SETV 0x1C /* Pointer to set vector in data area. */ 218 219 #if !defined (N_RELOCATION_INFO_DECLARED) 221 /* This structure describes a single relocation to be performed. 222 The text-relocation section of the file is a vector of these structures, 223 all of which apply to the text section. 224 Likewise, the data-relocation section applies to the data section. */ 225 226 struct relocation_info 227 { 228 /* Address (within segment) to be relocated. */ 229 int r_address; 230 /* The meaning of r_symbolnum depends on r_extern. */ 231 unsigned int r_symbolnum:24; 232 /* Nonzero means value is a pc-relative offset 233 and it should be relocated for changes in its own address 234 as well as for changes in the symbol or section specified. */ 235 unsigned int r_pcrel:1; 236 /* Length (as exponent of 2) of the field to be relocated. 237 Thus, a value of 2 indicates 1<<2 bytes. */ 238 unsigned int r_length:2; 239 /* 1 => relocate with value of symbol. 240 r_symbolnum is the index of the symbol 241 in file's the symbol table. 242 0 => relocate with the address of a segment. 243 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS 244 (the N_EXT bit may be set also, but signifies nothing). */ 245 unsigned int r_extern:1; 246 /* Four bits that aren't used, but when writing an object file 247 it is desirable to clear them. */ 248 unsigned int r_pad:4; 249 }; 250 #endif /* no N_RELOCATION_INFO_DECLARED. */ 251 252 #endif /*__ASSEMBLY__ */ 253 #endif /* _UAPI__A_OUT_GNU_H__ */ 254
