include/uapi/linux/a.out.h

   1 #ifndef _UAPI__A_OUT_GNU_H__
   2 #define _UAPI__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 #ifndef __ASSEMBLY__
  13
  14 /* these go in the N_MACHTYPE field */
  15 enum machine_type {
  16 #if defined (M_OLDSUN2)
  17   M__OLDSUN2 = M_OLDSUN2,
  18 #else
  19   M_OLDSUN2 = 0,
  20 #endif
  21 #if defined (M_68010)
  22   M__68010 = M_68010,
  23 #else
  24   M_68010 = 1,
  25 #endif
  26 #if defined (M_68020)
  27   M__68020 = M_68020,
  28 #else
  29   M_68020 = 2,
  30 #endif
  31 #if defined (M_SPARC)
  32   M__SPARC = M_SPARC,
  33 #else
  34   M_SPARC = 3,
  35 #endif
  36   /* skip a bunch so we don't run into any of sun's numbers */
  37   M_386 = 100,
  38   M_MIPS1 = 151,        /* MIPS R3000/R3000 binary */
  39   M_MIPS2 = 152         /* MIPS R6000/R4000 binary */
  40 };
  41
  42 #if !defined (N_MAGIC)
  43 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
  44 #endif
  45 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
  46 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
  47 #define N_SET_INFO(exec, magic, type, flags) \
  48         ((exec).a_info = ((magic) & 0xffff) \
  49          | (((int)(type) & 0xff) << 16) \
  50          | (((flags) & 0xff) << 24))
  51 #define N_SET_MAGIC(exec, magic) \
  52         ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
  53
  54 #define N_SET_MACHTYPE(exec, machtype) \
  55         ((exec).a_info = \
  56          ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
  57
  58 #define N_SET_FLAGS(exec, flags) \
  59         ((exec).a_info = \
  60          ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
  61
  62 /* Code indicating object file or impure executable.  */
  63 #define OMAGIC 0407
  64 /* Code indicating pure executable.  */
  65 #define NMAGIC 0410
  66 /* Code indicating demand-paged executable.  */
  67 #define ZMAGIC 0413
  68 /* This indicates a demand-paged executable with the header in the text.
  69    The first page is unmapped to help trap NULL pointer references */
  70 #define QMAGIC 0314
  71
  72 /* Code indicating core file.  */
  73 #define CMAGIC 0421
  74
  75 #if !defined (N_BADMAG)
  76 #define N_BADMAG(x)       (N_MAGIC(x) != OMAGIC         \
  77                         && N_MAGIC(x) != NMAGIC         \
  78                         && N_MAGIC(x) != ZMAGIC \
  79                         && N_MAGIC(x) != QMAGIC)
  80 #endif
  81
  82 #define _N_HDROFF(x) (1024 - sizeof (struct exec))
  83
  84 #if !defined (N_TXTOFF)
  85 #define N_TXTOFF(x) \
  86  (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
  87   (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
  88 #endif
  89
  90 #if !defined (N_DATOFF)
  91 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
  92 #endif
  93
  94 #if !defined (N_TRELOFF)
  95 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
  96 #endif
  97
  98 #if !defined (N_DRELOFF)
  99 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
 100 #endif
 101
 102 #if !defined (N_SYMOFF)
 103 #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
 104 #endif
 105
 106 #if !defined (N_STROFF)
 107 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
 108 #endif
 109
 110 /* Address of text segment in memory after it is loaded.  */
 111 #if !defined (N_TXTADDR)
 112 #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0)
 113 #endif
 114
 115 /* Address of data segment in memory after it is loaded.
 116    Note that it is up to you to define SEGMENT_SIZE
 117    on machines not listed here.  */
 118 #if defined(vax) || defined(hp300) || defined(pyr)
 119 #define SEGMENT_SIZE page_size
 120 #endif
 121 #ifdef  sony
 122 #define SEGMENT_SIZE    0x2000
 123 #endif  /* Sony.  */
 124 #ifdef is68k
 125 #define SEGMENT_SIZE 0x20000
 126 #endif
 127 #if defined(m68k) && defined(PORTAR)
 128 #define PAGE_SIZE 0x400
 129 #define SEGMENT_SIZE PAGE_SIZE
 130 #endif
 131
 132 #ifdef linux
 133 #ifndef __KERNEL__
 134 #include <unistd.h>
 135 #endif
 136 #if defined(__i386__) || defined(__mc68000__)
 137 #define SEGMENT_SIZE    1024
 138 #else
 139 #ifndef SEGMENT_SIZE
 140 #ifndef __KERNEL__
 141 #define SEGMENT_SIZE   getpagesize()
 142 #endif
 143 #endif
 144 #endif
 145 #endif
 146
 147 #define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)
 148
 149 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
 150
 151 #ifndef N_DATADDR
 152 #define N_DATADDR(x) \
 153     (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
 154      : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
 155 #endif
 156
 157 /* Address of bss segment in memory after it is loaded.  */
 158 #if !defined (N_BSSADDR)
 159 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
 160 #endif
 161 \f
 162 #if !defined (N_NLIST_DECLARED)
 163 struct nlist {
 164   union {
 165     char *n_name;
 166     struct nlist *n_next;
 167     long n_strx;
 168   } n_un;
 169   unsigned char n_type;
 170   char n_other;
 171   short n_desc;
 172   unsigned long n_value;
 173 };
 174 #endif /* no N_NLIST_DECLARED.  */
 175
 176 #if !defined (N_UNDF)
 177 #define N_UNDF 0
 178 #endif
 179 #if !defined (N_ABS)
 180 #define N_ABS 2
 181 #endif
 182 #if !defined (N_TEXT)
 183 #define N_TEXT 4
 184 #endif
 185 #if !defined (N_DATA)
 186 #define N_DATA 6
 187 #endif
 188 #if !defined (N_BSS)
 189 #define N_BSS 8
 190 #endif
 191 #if !defined (N_FN)
 192 #define N_FN 15
 193 #endif
 194
 195 #if !defined (N_EXT)
 196 #define N_EXT 1
 197 #endif
 198 #if !defined (N_TYPE)
 199 #define N_TYPE 036
 200 #endif
 201 #if !defined (N_STAB)
 202 #define N_STAB 0340
 203 #endif
 204
 205 /* The following type indicates the definition of a symbol as being
 206    an indirect reference to another symbol.  The other symbol
 207    appears as an undefined reference, immediately following this symbol.
 208
 209    Indirection is asymmetrical.  The other symbol's value will be used
 210    to satisfy requests for the indirect symbol, but not vice versa.
 211    If the other symbol does not have a definition, libraries will
 212    be searched to find a definition.  */
 213 #define N_INDR 0xa
 214
 215 /* The following symbols refer to set elements.
 216    All the N_SET[ATDB] symbols with the same name form one set.
 217    Space is allocated for the set in the text section, and each set
 218    element's value is stored into one word of the space.
 219    The first word of the space is the length of the set (number of elements).
 220
 221    The address of the set is made into an N_SETV symbol
 222    whose name is the same as the name of the set.
 223    This symbol acts like a N_DATA global symbol
 224    in that it can satisfy undefined external references.  */
 225
 226 /* These appear as input to LD, in a .o file.  */
 227 #define N_SETA  0x14            /* Absolute set element symbol */
 228 #define N_SETT  0x16            /* Text set element symbol */
 229 #define N_SETD  0x18            /* Data set element symbol */
 230 #define N_SETB  0x1A            /* Bss set element symbol */
 231
 232 /* This is output from LD.  */
 233 #define N_SETV  0x1C            /* Pointer to set vector in data area.  */
 234 \f
 235 #if !defined (N_RELOCATION_INFO_DECLARED)
 236 /* This structure describes a single relocation to be performed.
 237    The text-relocation section of the file is a vector of these structures,
 238    all of which apply to the text section.
 239    Likewise, the data-relocation section applies to the data section.  */
 240
 241 struct relocation_info
 242 {
 243   /* Address (within segment) to be relocated.  */
 244   int r_address;
 245   /* The meaning of r_symbolnum depends on r_extern.  */
 246   unsigned int r_symbolnum:24;
 247   /* Nonzero means value is a pc-relative offset
 248      and it should be relocated for changes in its own address
 249      as well as for changes in the symbol or section specified.  */
 250   unsigned int r_pcrel:1;
 251   /* Length (as exponent of 2) of the field to be relocated.
 252      Thus, a value of 2 indicates 1<<2 bytes.  */
 253   unsigned int r_length:2;
 254   /* 1 => relocate with value of symbol.
 255           r_symbolnum is the index of the symbol
 256           in file's the symbol table.
 257      0 => relocate with the address of a segment.
 258           r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
 259           (the N_EXT bit may be set also, but signifies nothing).  */
 260   unsigned int r_extern:1;
 261   /* Four bits that aren't used, but when writing an object file
 262      it is desirable to clear them.  */
 263 #ifdef NS32K
 264   unsigned r_bsr:1;
 265   unsigned r_disp:1;
 266   unsigned r_pad:2;
 267 #else
 268   unsigned int r_pad:4;
 269 #endif
 270 };
 271 #endif /* no N_RELOCATION_INFO_DECLARED.  */
 272
 273 #endif /*__ASSEMBLY__ */
 274 #endif /* _UAPI__A_OUT_GNU_H__ */