include/asm-sparc/a.out.h

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