--- /dev/null
+++ b/include/a.out.h
@@ -0,0 +1,138 @@
+#ifndef __A_OUT_GNU_H__
+#define __A_OUT_GNU_H__
+
+#include <bits/a.out.h>
+
+#define __GNU_EXEC_MACROS__
+
+struct exec
+{
+  unsigned long a_info;	/* Use macros N_MAGIC, etc for access.  */
+  unsigned int a_text;	/* Length of text, in bytes.  */
+  unsigned int a_data;	/* Length of data, in bytes.  */
+  unsigned int a_bss;	/* Length of uninitialized data area for file, in bytes.  */
+  unsigned int a_syms;	/* Length of symbol table data in file, in bytes.  */
+  unsigned int a_entry;	/* Start address.  */
+  unsigned int a_trsize;/* Length of relocation info for text, in bytes.  */
+  unsigned int a_drsize;/* Length of relocation info for data, in bytes.  */
+};
+
+enum machine_type
+{
+  M_OLDSUN2 = 0,
+  M_68010 = 1,
+  M_68020 = 2,
+  M_SPARC = 3,
+  M_386 = 100,
+  M_MIPS1 = 151,
+  M_MIPS2 = 152
+};
+
+#define N_MAGIC(exec)	((exec).a_info & 0xffff)
+#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
+
+#define N_TRSIZE(a)	((a).a_trsize)
+#define N_DRSIZE(a)	((a).a_drsize)
+#define N_SYMSIZE(a)	((a).a_syms)
+#define N_BADMAG(x) \
+  (N_MAGIC(x) != OMAGIC	&& N_MAGIC(x) != NMAGIC				\
+   && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC)
+#define _N_HDROFF(x)	(1024 - sizeof (struct exec))
+#define N_TXTOFF(x) \
+  (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) :	\
+   (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
+#define N_DATOFF(x)	(N_TXTOFF(x) + (x).a_text)
+#define N_TRELOFF(x)	(N_DATOFF(x) + (x).a_data)
+#define N_DRELOFF(x)	(N_TRELOFF(x) + N_TRSIZE(x))
+#define N_SYMOFF(x)	(N_DRELOFF(x) + N_DRSIZE(x))
+#define N_STROFF(x)	(N_SYMOFF(x) + N_SYMSIZE(x))
+
+/* Address of text segment in memory after it is loaded.  */
+#define N_TXTADDR(x)	(N_MAGIC(x) == QMAGIC ? 4096 : 0)
+
+/* Address of data segment in memory after it is loaded.  */
+#define SEGMENT_SIZE	1024
+
+#define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1))
+#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)
+
+#define N_DATADDR(x) \
+  (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x))				\
+   : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))
+#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
+
+#if !defined (N_NLIST_DECLARED)
+struct nlist
+{
+  union
+    {
+      char *n_name;
+      struct nlist *n_next;
+      long n_strx;
+    } n_un;
+  unsigned char n_type;
+  char n_other;
+  short n_desc;
+  unsigned long n_value;
+};
+#endif /* no N_NLIST_DECLARED.  */
+
+#define N_UNDF	0
+#define N_ABS	2
+#define N_TEXT	4
+#define N_DATA	6
+#define N_BSS	8
+#define N_FN	15
+#define N_EXT	1
+#define N_TYPE	036
+#define N_STAB	0340
+#define N_INDR	0xa
+#define	N_SETA	0x14	/* Absolute set element symbol.  */
+#define	N_SETT	0x16	/* Text set element symbol.  */
+#define	N_SETD	0x18	/* Data set element symbol.  */
+#define	N_SETB	0x1A	/* Bss set element symbol.  */
+#define N_SETV	0x1C	/* Pointer to set vector in data area.  */
+
+#if !defined (N_RELOCATION_INFO_DECLARED)
+/* This structure describes a single relocation to be performed.
+   The text-relocation section of the file is a vector of these structures,
+   all of which apply to the text section.
+   Likewise, the data-relocation section applies to the data section.  */
+
+struct relocation_info
+{
+  int r_address;
+  unsigned int r_symbolnum:24;
+  unsigned int r_pcrel:1;
+  unsigned int r_length:2;
+  unsigned int r_extern:1;
+  unsigned int r_pad:4;
+};
+#endif /* no N_RELOCATION_INFO_DECLARED.  */
+
+#endif /* __A_OUT_GNU_H__ */
--- /dev/null
+++ b/include/bits/a.out.h
@@ -0,0 +1,13 @@
+#ifndef __A_OUT_GNU_H__
+# error "Never use <bits/a.out.h> directly; include <a.out.h> instead."
+#endif
+
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+
+/* Signal to users of this header that this architecture really doesn't
+   support a.out binary format.  */
+#define __NO_A_OUT_SUPPORT 1
+
+#endif