2010-01-25 Robert Millan <rmh.grub@aybabtu.com>

* stage2/imgact_aout.h: Rewrite using aout.h from GRUB 1.97.2 as
	a base.
	* stage2/boot.c (load_image): Remove a.out handler for *BSD kernels.

ChangeLog

@@ -1,3 +1,9 @@
+2010-01-25  Robert Millan  <rmh.grub@aybabtu.com>
+
+	* stage2/imgact_aout.h: Rewrite using aout.h from GRUB 1.97.2 as
+	a base.
+	* stage2/boot.c (load_image): Remove a.out handler for *BSD kernels.
+
 2010-01-21  Robert Millan  <rmh.grub@aybabtu.com>
 
 	* configure.ac: Remove `--enable-example-kernel' option.

stage2/boot.c

@@ -169,53 +169,6 @@ load_image (char *kernel, char *arg, kernel_t suggested_type,
       exec_type = 2;
       str = "kludge";
     }
-  else if (len > sizeof (struct exec) && !N_BADMAG ((*(pu.aout))))
-    {
-      entry_addr = (entry_func) pu.aout->a_entry;
-
-      if (type == KERNEL_TYPE_NONE)
-	{
-	  /*
-	   *  If it doesn't have a Multiboot header, then presume
-	   *  it is either a FreeBSD or NetBSD executable.  If so,
-	   *  then use a magic number of normal ordering, ZMAGIC to
-	   *  determine if it is FreeBSD.
-	   *
-	   *  This is all because freebsd and netbsd seem to require
-	   *  masking out some address bits...  differently for each
-	   *  one...  plus of course we need to know which booting
-	   *  method to use.
-	   */
-	  entry_addr = (entry_func) ((int) entry_addr & 0xFFFFFF);
-	  
-	  if (buffer[0] == 0xb && buffer[1] == 1)
-	    {
-	      type = KERNEL_TYPE_FREEBSD;
-	      cur_addr = (int) entry_addr;
-	      str2 = "FreeBSD";
-	    }
-	  else
-	    {
-	      type = KERNEL_TYPE_NETBSD;
-	      cur_addr = (int) entry_addr & 0xF00000;
-	      if (N_GETMAGIC ((*(pu.aout))) != NMAGIC)
-		align_4k = 0;
-	      str2 = "NetBSD";
-	    }
-	}
-
-      /* first offset into file */
-      grub_seek (N_TXTOFF (*(pu.aout)));
-      text_len = pu.aout->a_text;
-      data_len = pu.aout->a_data;
-      bss_len = pu.aout->a_bss;
-
-      if (cur_addr < 0x100000)
-	errnum = ERR_BELOW_1MB;
-
-      exec_type = 1;
-      str = "a.out";
-    }
   else if (lh->boot_flag == BOOTSEC_SIGNATURE
 	   && lh->setup_sects <= LINUX_MAX_SETUP_SECTS)
     {

stage2/imgact_aout.h

@@ -1,4 +1,3 @@
-
 /*-
  * Copyright (c) 1992, 1993
  *      The Regents of the University of California.  All rights reserved.
@@ -11,10 +10,6 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
@@ -32,127 +27,22 @@
  * SUCH DAMAGE.
  *
  *      from: @(#)exec.h        8.1 (Berkeley) 6/11/93
- *	$Id$
+ * $FreeBSD$
- */
-/*
- *  11/23/95 - Kludge to get "ntohl" null macro added.  -- ESB
- *           - and for __LDPGSZ
  */
 
-#ifndef	_IMGACT_AOUT_H_
+#ifndef GRUB_AOUT_HEADER
-#define	_IMGACT_AOUT_H_
+#define GRUB_AOUT_HEADER 1
-
-/* XXX ESB */
-#define ntohl(x) ((x << 24) | ((x & 0xFF00) << 8) \
-		  | ((x >> 8) & 0xFF00) | (x >> 24))
-#define htonl(x) ntohl(x)
-#define __LDPGSZ 0x1000
-
-#define N_GETMAGIC(ex) \
-	( (ex).a_midmag & 0xffff )
-#define N_GETMID(ex) \
-	( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETMID_NET(ex) : \
-	((ex).a_midmag >> 16) & 0x03ff )
-#define N_GETFLAG(ex) \
-	( (N_GETMAGIC_NET(ex) == ZMAGIC) ? N_GETFLAG_NET(ex) : \
-	((ex).a_midmag >> 26) & 0x3f )
-#define N_SETMAGIC(ex,mag,mid,flag) \
-	( (ex).a_midmag = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
-	((mag) & 0xffff) )
-
-#define N_GETMAGIC_NET(ex) \
-	(ntohl((ex).a_midmag) & 0xffff)
-#define N_GETMID_NET(ex) \
-	((ntohl((ex).a_midmag) >> 16) & 0x03ff)
-#define N_GETFLAG_NET(ex) \
-	((ntohl((ex).a_midmag) >> 26) & 0x3f)
-#define N_SETMAGIC_NET(ex,mag,mid,flag) \
-	( (ex).a_midmag = htonl( (((flag)&0x3f)<<26) | (((mid)&0x03ff)<<16) | \
-	(((mag)&0xffff)) ) )
-
-#define N_ALIGN(ex,x) \
-	(N_GETMAGIC(ex) == ZMAGIC || N_GETMAGIC(ex) == QMAGIC || \
-	 N_GETMAGIC_NET(ex) == ZMAGIC || N_GETMAGIC_NET(ex) == QMAGIC ? \
-	 ((x) + __LDPGSZ - 1) & ~(unsigned long)(__LDPGSZ - 1) : (x))
-
-/* Valid magic number check. */
-#define	N_BADMAG(ex) \
-	(N_GETMAGIC(ex) != OMAGIC && N_GETMAGIC(ex) != NMAGIC && \
-	 N_GETMAGIC(ex) != ZMAGIC && N_GETMAGIC(ex) != QMAGIC && \
-	 N_GETMAGIC_NET(ex) != OMAGIC && N_GETMAGIC_NET(ex) != NMAGIC && \
-	 N_GETMAGIC_NET(ex) != ZMAGIC && N_GETMAGIC_NET(ex) != QMAGIC)
-
-
-/* Address of the bottom of the text segment. */
-#define N_TXTADDR(ex) \
-	((N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC || \
-	N_GETMAGIC(ex) == ZMAGIC) ? 0 : __LDPGSZ)
-
-/* Address of the bottom of the data segment. */
-#define N_DATADDR(ex) \
-	N_ALIGN(ex, N_TXTADDR(ex) + (ex).a_text)
-
-/* Text segment offset. */
-#define	N_TXTOFF(ex) \
-	(N_GETMAGIC(ex) == ZMAGIC ? __LDPGSZ : (N_GETMAGIC(ex) == QMAGIC || \
-	N_GETMAGIC_NET(ex) == ZMAGIC) ? 0 : sizeof(struct exec))
-
-/* Data segment offset. */
-#define	N_DATOFF(ex) \
-	N_ALIGN(ex, N_TXTOFF(ex) + (ex).a_text)
-
-/* Relocation table offset. */
-#define N_RELOFF(ex) \
-	N_ALIGN(ex, N_DATOFF(ex) + (ex).a_data)
-
-/* Symbol table offset. */
-#define N_SYMOFF(ex) \
-	(N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)
-
-/* String table offset. */
-#define	N_STROFF(ex) 	(N_SYMOFF(ex) + (ex).a_syms)
-
-/*
- * Header prepended to each a.out file.
- * only manipulate the a_midmag field via the
- * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros in a.out.h
- */
 
 struct exec
-  {
+{
-    unsigned long a_midmag;	/* htonl(flags<<26 | mid<<16 | magic) */
+  unsigned int a_midmag;	/* htonl(flags<<26 | mid<<16 | magic) */
-    unsigned long a_text;	/* text segment size */
+  unsigned int a_text;		/* text segment size */
-    unsigned long a_data;	/* initialized data size */
+  unsigned int a_data;		/* initialized data size */
-    unsigned long a_bss;	/* uninitialized data size */
+  unsigned int a_bss;		/* uninitialized data size */
-    unsigned long a_syms;	/* symbol table size */
+  unsigned int a_syms;		/* symbol table size */
-    unsigned long a_entry;	/* entry point */
+  unsigned int a_entry;		/* entry point */
-    unsigned long a_trsize;	/* text relocation size */
+  unsigned int a_trsize;	/* text relocation size */
-    unsigned long a_drsize;	/* data relocation size */
+  unsigned int a_drsize;	/* data relocation size */
-  };
+};
-#define a_magic a_midmag	/* XXX Hack to work with current kern_execve.c */
 
-/* a_magic */
+#endif /* ! GRUB_AOUT_HEADER */
-#define	OMAGIC          0x107	/* 0407 old impure format */
-#define	NMAGIC          0x108	/* 0410 read-only text */
-#define	ZMAGIC          0x10b	/* 0413 demand load format */
-#define QMAGIC          0xcc	/* 0314 "compact" demand load format */
-
-/* a_mid */
-#define	MID_ZERO	0	/* unknown - implementation dependent */
-#define	MID_SUN010	1	/* sun 68010/68020 binary */
-#define	MID_SUN020	2	/* sun 68020-only binary */
-#define MID_I386	134	/* i386 BSD binary */
-#define MID_SPARC	138	/* sparc */
-#define	MID_HP200	200	/* hp200 (68010) BSD binary */
-#define	MID_HP300	300	/* hp300 (68020+68881) BSD binary */
-#define	MID_HPUX	0x20C	/* hp200/300 HP-UX binary */
-#define	MID_HPUX800     0x20B	/* hp800 HP-UX binary */
-
-/*
- * a_flags
- */
-#define EX_PIC		0x10	/* contains position independant code */
-#define EX_DYNAMIC	0x20	/* contains run-time link-edit info */
-#define EX_DPMASK	0x30	/* mask for the above */
-
-#endif /* !_IMGACT_AOUT_H_ */