text: /* $Id: a.out.h,v 1.8 2002/02/09 19:49:31 davem Exp $ */
  #ifndef __SPARC64_A_OUT_H__
  #define __SPARC64_A_OUT_H__
  
  #define SPARC_PGSIZE    0x2000        /* Thanks to the sun4 architecture... */
  #define SEGMENT_SIZE    SPARC_PGSIZE  /* whee... */
  
  #ifndef __ASSEMBLY__
  
  struct exec {
  	unsigned char a_dynamic:1;      /* A __DYNAMIC is in this image */
  	unsigned char a_toolversion:7;
  	unsigned char a_machtype;
  	unsigned short a_info;
  	unsigned int a_text;		/* length of text, in bytes */
  	unsigned int a_data;		/* length of data, in bytes */
  	unsigned int a_bss;		/* length of bss, in bytes */
  	unsigned int a_syms;		/* length of symbol table, in bytes */
  	unsigned int a_entry;		/* where program begins */
  	unsigned int a_trsize;
  	unsigned int a_drsize;
  };
  
  #endif /* !__ASSEMBLY__ */
  
  /* Where in the file does the text information begin? */
  #define N_TXTOFF(x)     (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec))
  
  /* Where do the Symbols start? */
  #define N_SYMOFF(x)     (N_TXTOFF(x) + (x).a_text +   \
                           (x).a_data + (x).a_trsize +  \
                           (x).a_drsize)
  
  /* Where does text segment go in memory after being loaded? */
  #define N_TXTADDR(x)    (unsigned long)(((N_MAGIC(x) == ZMAGIC) &&      \
  	                 ((x).a_entry < SPARC_PGSIZE)) ?   		\
                            0 : SPARC_PGSIZE)
  
  /* And same for the data segment.. */
  #define N_DATADDR(x) (N_MAGIC(x)==OMAGIC ?         \
                        (N_TXTADDR(x) + (x).a_text)  \
                         : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
  
  #define N_TRSIZE(a)	((a).a_trsize)
  #define N_DRSIZE(a)	((a).a_drsize)
  #define N_SYMSIZE(a)	((a).a_syms)
  
  #ifndef __ASSEMBLY__
  
  /*
   * Sparc relocation types
   */
  enum reloc_type
  {
  	RELOC_8,
  	RELOC_16,
  	RELOC_32,	/* simplest relocs */
  	RELOC_DISP8,
  	RELOC_DISP16,
  	RELOC_DISP32,	/* Disp's (pc-rel) */
  	RELOC_WDISP30,
  	RELOC_WDISP22,  /* SR word disp's */
  	RELOC_HI22,
  	RELOC_22,	/* SR 22-bit relocs */
  	RELOC_13,
  	RELOC_LO10,	/* SR 13&10-bit relocs */
  	RELOC_SFA_BASE,
  	RELOC_SFA_OFF13, /* SR S.F.A. relocs */
  	RELOC_BASE10,
  	RELOC_BASE13,
  	RELOC_BASE22,	/* base_relative pic */
  	RELOC_PC10,
  	RELOC_PC22,	/* special pc-rel pic */
  	RELOC_JMP_TBL,	/* jmp_tbl_rel in pic */
  	RELOC_SEGOFF16,	/* ShLib offset-in-seg */
  	RELOC_GLOB_DAT,
  	RELOC_JMP_SLOT,
  	RELOC_RELATIVE 	/* rtld relocs */
  };
  
  /*
   * Format of a relocation datum.
   */
  struct relocation_info /* used when header.a_machtype == M_SPARC */
  {
          unsigned int    r_address;  /* relocation addr */
          unsigned int    r_index:24; /* segment index or symbol index */
          unsigned int    r_extern:1; /* if F, r_index==SEG#; if T, SYM idx */
          int             r_pad:2;    /* <unused> */
          enum reloc_type r_type:5;   /* type of relocation to perform */
          int             r_addend;   /* addend for relocation value */
  };
  
  #define N_RELOCATION_INFO_DECLARED 1
  
  #ifdef __KERNEL__
  
  #define STACK_TOP32	((1UL << 32UL) - PAGE_SIZE)
  #define STACK_TOP64	(0x0000080000000000UL - (1UL << 32UL))
  
  #define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
  		   STACK_TOP32 : STACK_TOP64)
  
  #endif
  
  #endif /* !(__ASSEMBLY__) */
  
  #endif /* !(__SPARC64_A_OUT_H__) */
  