include/asm-sparc/a.out.h

   1 /* $Id: a.out.h,v 1.13 2000/01/09 10:46:53 anton Exp $ */
   2 #ifndef __SPARC_A_OUT_H__
   3 #define __SPARC_A_OUT_H__
   4
   5 #define SPARC_PGSIZE    0x2000        /* Thanks to the sun4 architecture... */
   6 #define SEGMENT_SIZE    SPARC_PGSIZE  /* whee... */
   7
   8 struct exec {
   9         unsigned char a_dynamic:1;      /* A __DYNAMIC is in this image */
  10         unsigned char a_toolversion:7;
  11         unsigned char a_machtype;
  12         unsigned short a_info;
  13         unsigned long a_text;           /* length of text, in bytes */
  14         unsigned long a_data;           /* length of data, in bytes */
  15         unsigned long a_bss;            /* length of bss, in bytes */
  16         unsigned long a_syms;           /* length of symbol table, in bytes */
  17         unsigned long a_entry;          /* where program begins */
  18         unsigned long a_trsize;
  19         unsigned long a_drsize;
  20 };
  21
  22 /* Where in the file does the text information begin? */
  23 #define N_TXTOFF(x)     (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
  24
  25 /* Where do the Symbols start? */
  26 #define N_SYMOFF(x)     (N_TXTOFF(x) + (x).a_text +   \
  27                          (x).a_data + (x).a_trsize +  \
  28                          (x).a_drsize)
  29
  30 /* Where does text segment go in memory after being loaded? */
  31 #define N_TXTADDR(x)    (((N_MAGIC(x) == ZMAGIC) &&        \
  32                          ((x).a_entry < SPARC_PGSIZE)) ?   \
  33                           0 : SPARC_PGSIZE)
  34
  35 /* And same for the data segment.. */
  36 #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ?         \
  37                       (N_TXTADDR(x) + (x).a_text)  \
  38                        : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
  39
  40 #define N_TRSIZE(a)     ((a).a_trsize)
  41 #define N_DRSIZE(a)     ((a).a_drsize)
  42 #define N_SYMSIZE(a)    ((a).a_syms)
  43
  44 /*
  45  * Sparc relocation types
  46  */
  47 enum reloc_type
  48 {
  49         RELOC_8,
  50         RELOC_16,
  51         RELOC_32,       /* simplest relocs */
  52         RELOC_DISP8,
  53         RELOC_DISP16,
  54         RELOC_DISP32,   /* Disp's (pc-rel) */
  55         RELOC_WDISP30,
  56         RELOC_WDISP22,  /* SR word disp's */
  57         RELOC_HI22,
  58         RELOC_22,       /* SR 22-bit relocs */
  59         RELOC_13,
  60         RELOC_LO10,     /* SR 13&10-bit relocs */
  61         RELOC_SFA_BASE,
  62         RELOC_SFA_OFF13, /* SR S.F.A. relocs */
  63         RELOC_BASE10,
  64         RELOC_BASE13,
  65         RELOC_BASE22,   /* base_relative pic */
  66         RELOC_PC10,
  67         RELOC_PC22,     /* special pc-rel pic */
  68         RELOC_JMP_TBL,  /* jmp_tbl_rel in pic */
  69         RELOC_SEGOFF16, /* ShLib offset-in-seg */
  70         RELOC_GLOB_DAT,
  71         RELOC_JMP_SLOT,
  72         RELOC_RELATIVE  /* rtld relocs */
  73 };
  74
  75 /*
  76  * Format of a relocation datum.
  77  */
  78 struct relocation_info /* used when header.a_machtype == M_SPARC */
  79 {
  80         unsigned long   r_address;  /* relocation addr */
  81         unsigned int    r_index:24; /* segment index or symbol index */
  82         unsigned int    r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
  83         unsigned int    r_pad:2;    /* <unused> */
  84         enum reloc_type r_type:5;   /* type of relocation to perform */
  85         long            r_addend;   /* addend for relocation value */
  86 };
  87
  88 #define N_RELOCATION_INFO_DECLARED 1
  89
  90 #ifdef __KERNEL__
  91
  92 #include <asm/page.h>
  93
  94 #define STACK_TOP       (PAGE_OFFSET - PAGE_SIZE)
  95 #define STACK_TOP_MAX   STACK_TOP
  96
  97 #endif /* __KERNEL__ */
  98
  99 #endif /* __SPARC_A_OUT_H__ */