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/* $Id: a.out.h,v 1.13 2000/01/09 10:46:53 anton Exp $ */
#ifndef __SPARC_A_OUT_H__
#define __SPARC_A_OUT_H__
#define SPARC_PGSIZE 0x2000 /* Thanks to the sun4 architecture... */
#define SEGMENT_SIZE SPARC_PGSIZE /* whee... */
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 long a_text; /* length of text, in bytes */
unsigned long a_data; /* length of data, in bytes */
unsigned long a_bss; /* length of bss, in bytes */
unsigned long a_syms; /* length of symbol table, in bytes */
unsigned long a_entry; /* where program begins */
unsigned long a_trsize;
unsigned long a_drsize;
};
/* 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) (((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) \
: (_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)
/*
* 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 long 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 */
long r_addend; /* addend for relocation value */
};
#define N_RELOCATION_INFO_DECLARED 1
#ifdef __KERNEL__
#include <asm/page.h>
#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
#endif /* __KERNEL__ */
#endif /* __SPARC_A_OUT_H__ */
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