linux/arch/alpha/include/asm/a.out.h
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   1#ifndef __ALPHA_A_OUT_H__
   2#define __ALPHA_A_OUT_H__
   3
   4#include <linux/types.h>
   5
   6/*
   7 * OSF/1 ECOFF header structs.  ECOFF files consist of:
   8 *      - a file header (struct filehdr),
   9 *      - an a.out header (struct aouthdr),
  10 *      - one or more section headers (struct scnhdr). 
  11 *        The filhdr's "f_nscns" field contains the
  12 *        number of section headers.
  13 */
  14
  15struct filehdr
  16{
  17        /* OSF/1 "file" header */
  18        __u16 f_magic, f_nscns;
  19        __u32 f_timdat;
  20        __u64 f_symptr;
  21        __u32 f_nsyms;
  22        __u16 f_opthdr, f_flags;
  23};
  24
  25struct aouthdr
  26{
  27        __u64 info;             /* after that it looks quite normal.. */
  28        __u64 tsize;
  29        __u64 dsize;
  30        __u64 bsize;
  31        __u64 entry;
  32        __u64 text_start;       /* with a few additions that actually make sense */
  33        __u64 data_start;
  34        __u64 bss_start;
  35        __u32 gprmask, fprmask; /* bitmask of general & floating point regs used in binary */
  36        __u64 gpvalue;
  37};
  38
  39struct scnhdr
  40{
  41        char    s_name[8];
  42        __u64   s_paddr;
  43        __u64   s_vaddr;
  44        __u64   s_size;
  45        __u64   s_scnptr;
  46        __u64   s_relptr;
  47        __u64   s_lnnoptr;
  48        __u16   s_nreloc;
  49        __u16   s_nlnno;
  50        __u32   s_flags;
  51};
  52
  53struct exec
  54{
  55        /* OSF/1 "file" header */
  56        struct filehdr          fh;
  57        struct aouthdr          ah;
  58};
  59
  60/*
  61 * Define's so that the kernel exec code can access the a.out header
  62 * fields...
  63 */
  64#define a_info          ah.info
  65#define a_text          ah.tsize
  66#define a_data          ah.dsize
  67#define a_bss           ah.bsize
  68#define a_entry         ah.entry
  69#define a_textstart     ah.text_start
  70#define a_datastart     ah.data_start
  71#define a_bssstart      ah.bss_start
  72#define a_gprmask       ah.gprmask
  73#define a_fprmask       ah.fprmask
  74#define a_gpvalue       ah.gpvalue
  75
  76#define N_TXTADDR(x) ((x).a_textstart)
  77#define N_DATADDR(x) ((x).a_datastart)
  78#define N_BSSADDR(x) ((x).a_bssstart)
  79#define N_DRSIZE(x) 0
  80#define N_TRSIZE(x) 0
  81#define N_SYMSIZE(x) 0
  82
  83#define AOUTHSZ         sizeof(struct aouthdr)
  84#define SCNHSZ          sizeof(struct scnhdr)
  85#define SCNROUND        16
  86
  87#define N_TXTOFF(x) \
  88  ((long) N_MAGIC(x) == ZMAGIC ? 0 : \
  89   (sizeof(struct exec) + (x).fh.f_nscns*SCNHSZ + SCNROUND - 1) & ~(SCNROUND - 1))
  90
  91#ifdef __KERNEL__
  92
  93/* Assume that start addresses below 4G belong to a TASO application.
  94   Unfortunately, there is no proper bit in the exec header to check.
  95   Worse, we have to notice the start address before swapping to use
  96   /sbin/loader, which of course is _not_ a TASO application.  */
  97#define SET_AOUT_PERSONALITY(BFPM, EX) \
  98        set_personality (((BFPM->taso || EX.ah.entry < 0x100000000L \
  99                           ? ADDR_LIMIT_32BIT : 0) | PER_OSF4))
 100
 101#endif /* __KERNEL__ */
 102#endif /* __A_OUT_GNU_H__ */
 103
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