2006-02-20 Thomas Schwinge <tschwinge@gnu.org>

Remove unused and unsupported code.  Consult the file
	`DEVELOPMENT' for details.  Partly based on suggestions by
	Gianluca Guida <glguida@gmail.com>.

	* i386/dos/dos_buf.c: Remove file.
	* i386/dos/dos_check_err.c: Likewise.
	* i386/dos/dos_close.c: Likewise.
	* i386/dos/dos_fstat.c: Likewise.
	* i386/dos/dos_gettimeofday.c: Likewise.
	* i386/dos/dos_io.h: Likewise.
	* i386/dos/dos_open.c: Likewise.
	* i386/dos/dos_read.c: Likewise.
	* i386/dos/dos_rename.c: Likewise.
	* i386/dos/dos_seek.c: Likewise.
	* i386/dos/dos_tcgetattr.c: Likewise.
	* i386/dos/dos_unlink.c: Likewise.
	* i386/dos/dos_write.c: Likewise.
	* i386/dos/i16/gdt.h: Likewise.
	* i386/dos/i16/gdt_sels.h: Likewise.
	* i386/dos/i16/i16_crt0.S: Likewise.
	* i386/dos/i16/i16_crt0.h: Likewise.
	* i386/dos/i16/i16_dos.h: Likewise.
	* i386/dos/i16/i16_dos_mem.c: Likewise.
	* i386/dos/i16/i16_exit.c: Likewise.
	* i386/dos/i16/i16_main.c: Likewise.
	* i386/dos/i16/i16_putchar.c: Likewise.
	* i386/dos/i16/i16_vcpi.c: Likewise.
	* i386/dos/i16/i16_xms.c: Likewise.
	* i386/dos/i16/idt.h: Likewise.
	* i386/dos/i16/phys_mem_sources.h: Likewise.
	* i386/dos/putchar.c: Likewise.

1 files changed, 0 insertions, 182 deletions

diff --git a/i386/dos/i16/i16_dos_mem.c b/i386/dos/i16/i16_dos_mem.c
deleted file mode 100644
index e78398db..00000000
--- a/i386/dos/i16/i16_dos_mem.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/* 
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- *      Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/code16.h>
-#include <mach/machine/vm_types.h>
-
-#include "i16_dos.h"
-#include "config.h"
-
-
-
-/* These aren't static because vcpi and dpmi code need to grab DOS memory
-   before we've switched to protected mode and memory has been collected.  */
-vm_offset_t dos_mem_phys_free_mem;
-vm_size_t dos_mem_phys_free_size;
-
-
-CODE32
-
-void dos_mem_collect(void)
-{
-	if (dos_mem_phys_free_mem)
-	{
-		phys_mem_add(dos_mem_phys_free_mem, dos_mem_phys_free_size);
-		dos_mem_phys_free_mem = 0;
-	}
-}
-
-CODE16
-
-void i16_dos_mem_check()
-{
-	unsigned short paras = 0xf000;
-	int dos_mem_seg;
-
-	/* Allocate as big a chunk of memory as we can find.  */
-	do
-	{
-		if (paras == 0)
-			return;
-		dos_mem_seg = i16_dos_alloc(&paras);
-	}
-	while (dos_mem_seg < 0);
-
-	dos_mem_phys_free_mem = dos_mem_seg << 4;
-	dos_mem_phys_free_size = paras << 4;
-
-#ifdef ENABLE_CODE_CHECK
-	i16_code_copy();
-#endif
-}
-
-
-#ifdef ENABLE_CODE_CHECK
-
-/* Big humongo kludge to help in finding random code-trashing bugs.
-   We copy the entire text segment upon initialization,
-   and then check it later as necessary.  */
-
-#include <mach/machine/proc_reg.h>
-#include "vm_param.h"
-
-extern char etext[], i16_entry_2[];
-
-static int code_copy_seg;
-
-static int i16_code_copy()
-{
-	int text_size = (int)etext & ~0xf;
-	int i;
-
-	if (dos_mem_phys_free_size < text_size)
-		return;
-
-	code_copy_seg = dos_mem_phys_free_mem >> 4;
-	dos_mem_phys_free_mem += text_size;
-	dos_mem_phys_free_size -= text_size;
-
-	set_fs(code_copy_seg);
-	for (i = 0; i < text_size; i += 4)
-		asm volatile("
-			movl (%%ebx),%%eax
-			movl %%eax,%%fs:(%%ebx)
-		" : : "b" (i) : "eax");
-}
-
-void i16_code_check(int dummy)
-{
-	int text_size = (int)etext & ~0xf;
-	int i, old, new;
-	int found = 0;
-
-	if (!code_copy_seg)
-		return;
-
-	set_fs(code_copy_seg);
-	for (i = (int)i16_entry_2; i < text_size; i += 4)
-	{
-		asm volatile("
-			movl (%%ebx),%%eax
-			movl %%fs:(%%ebx),%%ecx
-		" : "=a" (new), "=c" (old) : "b" (i));
-		if (old != new)
-		{
-			found = 1;
-			i16_writehexw(i);
-			i16_putchar(' ');
-			i16_writehexl(old);
-			i16_putchar(' ');
-			i16_writehexl(new);
-			i16_putchar('\r');
-			i16_putchar('\n');
-		}
-	}
-	if (found)
-	{
-		code_copy_seg = 0;
-		i16_writehexl((&dummy)[-1]);
-		i16_die(" DOS extender code trashed!");
-	}
-}
-
-CODE32
-
-void code_check(int dummy)
-{
-	int text_size = (int)etext & ~0xf;
-	unsigned char *new = 0, *old = (void*)phystokv(code_copy_seg*16);
-	int found = 0;
-	int i;
-
-	if (!code_copy_seg)
-		return;
-
-	for (i = (int)i16_entry_2; (i < text_size) && (found < 10); i++)
-	{
-		/* In several places we have to self-modify an int instruction,
-		   or the segment value in an absolute long jmp instruction,
-		   so ignore any changes preceded by those opcodes.  */
-		if ((new[i] != old[i])
-		    && (old[i-1] != 0xcd)
-		    && (old[i-6] != 0xea))
-		{
-			if (!found)
-			{
-				found = 1;
-				about_to_die(1);
-			}
-			printf("%08x addr %04x was %02x now %02x\n",
-				(&dummy)[-1], i, old[i], new[i]);
-		}
-	}
-	if (found)
-	{
-		code_copy_seg = 0;
-		die("%08x DOS extender code trashed!", (&dummy)[-1]);
-	}
-}
-
-CODE16
-
-#endif ENABLE_CODE_CHECK