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 #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 #ifndef __KERNEL__ 115 #include <unistd.h> 116 #endif 117 #if defined(__i386__) || defined(__mc68000__) 118 #define SEGMENT_SIZE 1024 119 #else 120 #ifndef SEGMENT_SIZE 121 #ifndef __KERNEL__ 122 #define SEGMENT_SIZE getpagesize() 123 #endif 124 #endif 125 #endif 126 127 #define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE) 128 129 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 130 131 #ifndef N_DATADDR 132 #define N_DATADDR(x) \ 133 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ 134 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 135 #endif 136 137 /* Address of bss segment in memory after it is loaded. */ 138 #if !defined (N_BSSADDR) 139 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 140 #endif 141 142 #if !defined (N_NLIST_DECLARED) 143 struct nlist { 144 union { 145 char *n_name; 146 struct nlist *n_next; 147 long n_strx; 148 } n_un; 149 unsigned char n_type; 150 char n_other; 151 short n_desc; 152 unsigned long n_value; 153 }; 154 #endif /* no N_NLIST_DECLARED. */ 155 156 #if !defined (N_UNDF) 157 #define N_UNDF 0 158 #endif 159 #if !defined (N_ABS) 160 #define N_ABS 2 161 #endif 162 #if !defined (N_TEXT) 163 #define N_TEXT 4 164 #endif 165 #if !defined (N_DATA) 166 #define N_DATA 6 167 #endif 168 #if !defined (N_BSS) 169 #define N_BSS 8 170 #endif 171 #if !defined (N_FN) 172 #define N_FN 15 173 #endif 174 175 #if !defined (N_EXT) 176 #define N_EXT 1 177 #endif 178 #if !defined (N_TYPE) 179 #define N_TYPE 036 180 #endif 181 #if !defined (N_STAB) 182 #define N_STAB 0340 183 #endif 184 185 /* The following type indicates the definition of a symbol as being 186 an indirect reference to another symbol. The other symbol 187 appears as an undefined reference, immediately following this symbol. 188 189 Indirection is asymmetrical. The other symbol's value will be used 190 to satisfy requests for the indirect symbol, but not vice versa. 191 If the other symbol does not have a definition, libraries will 192 be searched to find a definition. */ 193 #define N_INDR 0xa 194 195 /* The following symbols refer to set elements. 196 All the N_SET[ATDB] symbols with the same name form one set. 197 Space is allocated for the set in the text section, and each set 198 element's value is stored into one word of the space. 199 The first word of the space is the length of the set (number of elements). 200 201 The address of the set is made into an N_SETV symbol 202 whose name is the same as the name of the set. 203 This symbol acts like a N_DATA global symbol 204 in that it can satisfy undefined external references. */ 205 206 /* These appear as input to LD, in a .o file. */ 207 #define N_SETA 0x14 /* Absolute set element symbol */ 208 #define N_SETT 0x16 /* Text set element symbol */ 209 #define N_SETD 0x18 /* Data set element symbol */ 210 #define N_SETB 0x1A /* Bss set element symbol */ 211 212 /* This is output from LD. */ 213 #define N_SETV 0x1C /* Pointer to set vector in data area. */ 214 215 #if !defined (N_RELOCATION_INFO_DECLARED) 216 /* This structure describes a single relocation to be performed. 217 The text-relocation section of the file is a vector of these structures, 218 all of which apply to the text section. 219 Likewise, the data-relocation section applies to the data section. */ 220 221 struct relocation_info 222 { 223 /* Address (within segment) to be relocated. */ 224 int r_address; 225 /* The meaning of r_symbolnum depends on r_extern. */ 226 unsigned int r_symbolnum:24; 227 /* Nonzero means value is a pc-relative offset 228 and it should be relocated for changes in its own address 229 as well as for changes in the symbol or section specified. */ 230 unsigned int r_pcrel:1; 231 /* Length (as exponent of 2) of the field to be relocated. 232 Thus, a value of 2 indicates 1<<2 bytes. */ 233 unsigned int r_length:2; 234 /* 1 => relocate with value of symbol. 235 r_symbolnum is the index of the symbol 236 in file's the symbol table. 237 0 => relocate with the address of a segment. 238 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS 239 (the N_EXT bit may be set also, but signifies nothing). */ 240 unsigned int r_extern:1; 241 /* Four bits that aren't used, but when writing an object file 242 it is desirable to clear them. */ 243 unsigned int r_pad:4; 244 }; 245 #endif /* no N_RELOCATION_INFO_DECLARED. */ 246 247 #endif /*__ASSEMBLY__ */ 248 #endif /* _UAPI__A_OUT_GNU_H__ */ 249