include/asm-sparc64/a.out.h

   1 /* $Id: a.out.h,v 1.8 2002/02/09 19:49:31 davem Exp $ */
   2 #ifndef __SPARC64_A_OUT_H__
   3 #define __SPARC64_A_OUT_H__
   4
   5 #define SPARC_PGSIZE    0x2000        /* Thanks to the sun4 architecture... */
   6 #define SEGMENT_SIZE    SPARC_PGSIZE  /* whee... */
   7
   8 #ifndef __ASSEMBLY__
   9
  10 struct exec {
  11         unsigned char a_dynamic:1;      /* A __DYNAMIC is in this image */
  12         unsigned char a_toolversion:7;
  13         unsigned char a_machtype;
  14         unsigned short a_info;
  15         unsigned int a_text;            /* length of text, in bytes */
  16         unsigned int a_data;            /* length of data, in bytes */
  17         unsigned int a_bss;             /* length of bss, in bytes */
  18         unsigned int a_syms;            /* length of symbol table, in bytes */
  19         unsigned int a_entry;           /* where program begins */
  20         unsigned int a_trsize;
  21         unsigned int a_drsize;
  22 };
  23
  24 #endif /* !__ASSEMBLY__ */
  25
  26 /* Where in the file does the text information begin? */
  27 #define N_TXTOFF(x)     (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
  28
  29 /* Where do the Symbols start? */
  30 #define N_SYMOFF(x)     (N_TXTOFF(x) + (x).a_text +   \
  31                          (x).a_data + (x).a_trsize +  \
  32                          (x).a_drsize)
  33
  34 /* Where does text segment go in memory after being loaded? */
  35 #define N_TXTADDR(x)    (unsigned long)(((N_MAGIC(x) == ZMAGIC) &&      \
  36                          ((x).a_entry < SPARC_PGSIZE)) ?                \
  37                           0 : SPARC_PGSIZE)
  38
  39 /* And same for the data segment.. */
  40 #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ?         \
  41                       (N_TXTADDR(x) + (x).a_text)  \
  42                        : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
  43
  44 #define N_TRSIZE(a)     ((a).a_trsize)
  45 #define N_DRSIZE(a)     ((a).a_drsize)
  46 #define N_SYMSIZE(a)    ((a).a_syms)
  47
  48 #ifndef __ASSEMBLY__
  49
  50 /*
  51  * Sparc relocation types
  52  */
  53 enum reloc_type
  54 {
  55         RELOC_8,
  56         RELOC_16,
  57         RELOC_32,       /* simplest relocs */
  58         RELOC_DISP8,
  59         RELOC_DISP16,
  60         RELOC_DISP32,   /* Disp's (pc-rel) */
  61         RELOC_WDISP30,
  62         RELOC_WDISP22,  /* SR word disp's */
  63         RELOC_HI22,
  64         RELOC_22,       /* SR 22-bit relocs */
  65         RELOC_13,
  66         RELOC_LO10,     /* SR 13&10-bit relocs */
  67         RELOC_SFA_BASE,
  68         RELOC_SFA_OFF13, /* SR S.F.A. relocs */
  69         RELOC_BASE10,
  70         RELOC_BASE13,
  71         RELOC_BASE22,   /* base_relative pic */
  72         RELOC_PC10,
  73         RELOC_PC22,     /* special pc-rel pic */
  74         RELOC_JMP_TBL,  /* jmp_tbl_rel in pic */
  75         RELOC_SEGOFF16, /* ShLib offset-in-seg */
  76         RELOC_GLOB_DAT,
  77         RELOC_JMP_SLOT,
  78         RELOC_RELATIVE  /* rtld relocs */
  79 };
  80
  81 /*
  82  * Format of a relocation datum.
  83  */
  84 struct relocation_info /* used when header.a_machtype == M_SPARC */
  85 {
  86         unsigned int    r_address;  /* relocation addr */
  87         unsigned int    r_index:24; /* segment index or symbol index */
  88         unsigned int    r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
  89         int             r_pad:2;    /* <unused> */
  90         enum reloc_type r_type:5;   /* type of relocation to perform */
  91         int             r_addend;   /* addend for relocation value */
  92 };
  93
  94 #define N_RELOCATION_INFO_DECLARED 1
  95
  96 #ifdef __KERNEL__
  97
  98 #define STACK_TOP32     ((1UL << 32UL) - PAGE_SIZE)
  99 #define STACK_TOP64     (0x0000080000000000UL - (1UL << 32UL))
 100
 101 #define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
 102                    STACK_TOP32 : STACK_TOP64)
 103
 104 #endif
 105
 106 #endif /* !(__ASSEMBLY__) */
 107
 108 #endif /* !(__SPARC64_A_OUT_H__) */