sysdeps/unix/sysv/linux/alpha/a.out.h

   1 #ifndef __A_OUT_GNU_H__
   2 #define __A_OUT_GNU_H__
   3
   4 #include <bits/a.out.h>
   5
   6 #define __GNU_EXEC_MACROS__
   7
   8 /*
   9  * OSF/1 ECOFF header structs.  ECOFF files consist of:
  10  *      - a file header (struct filehdr),
  11  *      - an a.out header (struct aouthdr),
  12  *      - one or more section headers (struct scnhdr).
  13  *        The filhdr's "f_nscns" field contains the
  14  *        number of section headers.
  15  */
  16
  17 struct filehdr
  18 {
  19   /* OSF/1 "file" header */
  20   unsigned short f_magic, f_nscns;
  21   unsigned int   f_timdat;
  22   unsigned long  f_symptr;
  23   unsigned int   f_nsyms;
  24   unsigned short f_opthdr, f_flags;
  25 };
  26
  27 struct aouthdr
  28 {
  29   unsigned long info;           /* After that it looks quite normal..  */
  30   unsigned long tsize;
  31   unsigned long dsize;
  32   unsigned long bsize;
  33   unsigned long entry;
  34   unsigned long text_start;     /* With a few additions that actually make sense.  */
  35   unsigned long data_start;
  36   unsigned long bss_start;
  37   unsigned int  gprmask, fprmask; /* Bitmask of general & floating point regs used in binary.  */
  38   unsigned long gpvalue;
  39 };
  40
  41 struct scnhdr
  42 {
  43   char           s_name[8];
  44   unsigned long  s_paddr;
  45   unsigned long  s_vaddr;
  46   unsigned long  s_size;
  47   unsigned long  s_scnptr;
  48   unsigned long  s_relptr;
  49   unsigned long  s_lnnoptr;
  50   unsigned short s_nreloc;
  51   unsigned short s_nlnno;
  52   unsigned int   s_flags;
  53 };
  54
  55 struct exec
  56 {
  57   /* OSF/1 "file" header */
  58   struct filehdr fh;
  59   struct aouthdr ah;
  60 };
  61
  62 #define a_info          ah.info
  63 #define a_text          ah.tsize
  64 #define a_data          ah.dsize
  65 #define a_bss           ah.bsize
  66 #define a_entry         ah.entry
  67 #define a_textstart     ah.text_start
  68 #define a_datastart     ah.data_start
  69 #define a_bssstart      ah.bss_start
  70 #define a_gprmask       ah.gprmask
  71 #define a_fprmask       ah.fprmask
  72 #define a_gpvalue       ah.gpvalue
  73
  74
  75 #define AOUTHSZ         sizeof(struct aouthdr)
  76 #define SCNHSZ          sizeof(struct scnhdr)
  77 #define SCNROUND        16
  78
  79 enum machine_type
  80 {
  81   M_OLDSUN2 = 0,
  82   M_68010 = 1,
  83   M_68020 = 2,
  84   M_SPARC = 3,
  85   M_386 = 100,
  86   M_MIPS1 = 151,
  87   M_MIPS2 = 152
  88 };
  89
  90 #define N_MAGIC(exec)   ((exec).a_info & 0xffff)
  91 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
  92 #define N_FLAGS(exec)   (((exec).a_info >> 24) & 0xff)
  93 #define N_SET_INFO(exec, magic, type, flags) \
  94   ((exec).a_info = ((magic) & 0xffff)                                   \
  95    | (((int)(type) & 0xff) << 16)                                       \
  96    | (((flags) & 0xff) << 24))
  97 #define N_SET_MAGIC(exec, magic) \
  98   ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff))
  99 #define N_SET_MACHTYPE(exec, machtype) \
 100   ((exec).a_info =                                                      \
 101    ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
 102 #define N_SET_FLAGS(exec, flags) \
 103   ((exec).a_info =                                                      \
 104    ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
 105
 106 /* Code indicating object file or impure executable.  */
 107 #define OMAGIC 0407
 108 /* Code indicating pure executable.  */
 109 #define NMAGIC 0410
 110 /* Code indicating demand-paged executable.  */
 111 #define ZMAGIC 0413
 112 /* This indicates a demand-paged executable with the header in the text.
 113    The first page is unmapped to help trap NULL pointer references.  */
 114 #define QMAGIC 0314
 115 /* Code indicating core file.  */
 116 #define CMAGIC 0421
 117
 118 #define N_TRSIZE(x)     0
 119 #define N_DRSIZE(x)     0
 120 #define N_SYMSIZE(x)    0
 121 #define N_BADMAG(x) \
 122   (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC                         \
 123    && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC)
 124 #define _N_HDROFF(x)    (1024 - sizeof (struct exec))
 125 #define N_TXTOFF(x) \
 126   ((long) N_MAGIC(x) == ZMAGIC ? 0 :                                    \
 127    (sizeof (struct exec) + (x).fh.f_nscns * SCNHSZ + SCNROUND - 1)      \
 128    & ~(SCNROUND - 1))
 129
 130 #define N_DATOFF(x)     (N_TXTOFF(x) + (x).a_text)
 131 #define N_TRELOFF(x)    (N_DATOFF(x) + (x).a_data)
 132 #define N_DRELOFF(x)    (N_TRELOFF(x) + N_TRSIZE(x))
 133 #define N_SYMOFF(x)     (N_DRELOFF(x) + N_DRSIZE(x))
 134 #define N_STROFF(x)     (N_SYMOFF(x) + N_SYMSIZE(x))
 135
 136 /* Address of text segment in memory after it is loaded.  */
 137 #define N_TXTADDR(x)    ((x).a_textstart)
 138
 139 /* Address of data segment in memory after it is loaded.  */
 140 #define SEGMENT_SIZE    1024
 141
 142 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
 143 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
 144
 145 #define N_DATADDR(x)    ((x).a_datastart)
 146 #define N_BSSADDR(x)    ((x).a_bssstart)
 147
 148 #if !defined (N_NLIST_DECLARED)
 149 struct nlist
 150 {
 151   union
 152     {
 153       char *n_name;
 154       struct nlist *n_next;
 155       long n_strx;
 156     } n_un;
 157   unsigned char n_type;
 158   char n_other;
 159   short n_desc;
 160   unsigned long n_value;
 161 };
 162 #endif /* no N_NLIST_DECLARED.  */
 163
 164 #define N_UNDF  0
 165 #define N_ABS   2
 166 #define N_TEXT  4
 167 #define N_DATA  6
 168 #define N_BSS   8
 169 #define N_FN    15
 170 #define N_EXT   1
 171 #define N_TYPE  036
 172 #define N_STAB  0340
 173 #define N_INDR  0xa
 174 #define N_SETA  0x14    /* Absolute set element symbol.  */
 175 #define N_SETT  0x16    /* Text set element symbol.  */
 176 #define N_SETD  0x18    /* Data set element symbol.  */
 177 #define N_SETB  0x1A    /* Bss set element symbol.  */
 178 #define N_SETV  0x1C    /* Pointer to set vector in data area.  */
 179
 180 #if !defined (N_RELOCATION_INFO_DECLARED)
 181 /* This structure describes a single relocation to be performed.
 182    The text-relocation section of the file is a vector of these structures,
 183    all of which apply to the text section.
 184    Likewise, the data-relocation section applies to the data section.  */
 185
 186 struct relocation_info
 187 {
 188   int r_address;
 189   unsigned int r_symbolnum:24;
 190   unsigned int r_pcrel:1;
 191   unsigned int r_length:2;
 192   unsigned int r_extern:1;
 193   unsigned int r_pad:4;
 194 };
 195 #endif /* no N_RELOCATION_INFO_DECLARED.  */
 196
 197 #endif /* __A_OUT_GNU_H__ */