/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __A_OUT_GNU_H__
#define __A_OUT_GNU_H__

#define __GNU_EXEC_MACROS__

#ifndef __STRUCT_EXEC_OVERRIDE__

#include <asm/a.out.h>

#endif /* __STRUCT_EXEC_OVERRIDE__ */

#ifndef __ASSEMBLY__

/* these go in the N_MACHTYPE field */
enum machine_type {
#if defined (M_OLDSUN2)
  M__OLDSUN2 = M_OLDSUN2,
#else
  M_OLDSUN2 = 0,
#endif
#if defined (M_68010)
  M__68010 = M_68010,
#else
  M_68010 = 1,
#endif
#if defined (M_68020)
  M__68020 = M_68020,
#else
  M_68020 = 2,
#endif
#if defined (M_SPARC)
  M__SPARC = M_SPARC,
#else
  M_SPARC = 3,
#endif
  /* skip a bunch so we don't run into any of sun's numbers */
  M_386 = 100,
  M_MIPS1 = 151,	/* MIPS R3000/R3000 binary */
  M_MIPS2 = 152		/* MIPS R6000/R4000 binary */
};

#if !defined (N_MAGIC)
#define N_MAGIC(exec) ((exec).a_info & 0xffff)
#endif
#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
#define N_SET_INFO(exec, magic, type, flags) \
	((exec).a_info = ((magic) & 0xffff) \
	 | (((int)(type) & 0xff) << 16) \
	 | (((flags) & 0xff) << 24))
#define N_SET_MAGIC(exec, magic) \
	((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))

#define N_SET_MACHTYPE(exec, machtype) \
	((exec).a_info = \
	 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))

#define N_SET_FLAGS(exec, flags) \
	((exec).a_info = \
	 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))

/* Code indicating object file or impure executable.  */
#define OMAGIC 0407
/* Code indicating pure executable.  */
#define NMAGIC 0410
/* Code indicating demand-paged executable.  */
#define ZMAGIC 0413
/* This indicates a demand-paged executable with the header in the text. 
   The first page is unmapped to help trap NULL pointer references */
#define QMAGIC 0314

/* Code indicating core file.  */
#define CMAGIC 0421

#if !defined (N_BADMAG)
#define N_BADMAG(x)	  (N_MAGIC(x) != OMAGIC		\
			&& N_MAGIC(x) != NMAGIC		\
  			&& N_MAGIC(x) != ZMAGIC \
		        && N_MAGIC(x) != QMAGIC)
#endif

#define _N_HDROFF(x) (1024 - sizeof (struct exec))

#if !defined (N_TXTOFF)
#define N_TXTOFF(x) \
 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
  (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
#endif

#if !defined (N_DATOFF)
#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)
#endif

#if !defined (N_TRELOFF)
#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)
#endif

#if !defined (N_DRELOFF)
#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))
#endif

#if !defined (N_SYMOFF)
#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))
#endif

#if !defined (N_STROFF)
#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))
#endif

/* Address of text segment in memory after it is loaded.  */
#if !defined (N_TXTADDR)
#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0)
#endif

/* Address of data segment in memory after it is loaded. */
#include <unistd.h>
#if defined(__i386__) || defined(__mc68000__)
#define SEGMENT_SIZE	1024
#else
#ifndef SEGMENT_SIZE
#define SEGMENT_SIZE   getpagesize()
#endif
#endif

#define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)

#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)

#ifndef N_DATADDR
#define N_DATADDR(x) \
    (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \
     : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
#endif

/* Address of bss segment in memory after it is loaded.  */
#if !defined (N_BSSADDR)
#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
#endif
