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, 175 deletions

diff --git a/i386/dos/i16/i16_xms.c b/i386/dos/i16/i16_xms.c
deleted file mode 100644
index ba75d5c..0000000
--- a/i386/dos/i16/i16_xms.c
+++ /dev/null
@@ -1,175 +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 <mach/machine/far_ptr.h>
-#include <mach/machine/asm.h>
-
-#include "i16_a20.h"
-#include "phys_mem.h"
-#include "debug.h"
-
-
-struct far_pointer_16 xms_control;
-
-#define CALL_XMS "lcallw "SEXT(xms_control)
-
-
-static vm_offset_t xms_phys_free_mem;
-static vm_size_t xms_phys_free_size;
-
-static short free_handle;
-static char free_handle_allocated;
-static char free_handle_locked;
-
-
-CODE32
-
-void xms_mem_collect(void)
-{
-	if (xms_phys_free_mem)
-	{
-		phys_mem_add(xms_phys_free_mem, xms_phys_free_size);
-		xms_phys_free_mem = 0;
-	}
-}
-
-CODE16
-
-static void i16_xms_enable_a20(void)
-{
-	short success;
-	asm volatile(CALL_XMS : "=a" (success) : "a" (0x0500) : "ebx");
-	if (!success)
-		i16_die("XMS error: can't enable A20 line");
-}
-
-static void i16_xms_disable_a20(void)
-{
-	short success;
-	asm volatile(CALL_XMS : "=a" (success) : "a" (0x0600) : "ebx");
-	if (!success)
-		i16_die("XMS error: can't disable A20 line");
-}
-
-void i16_xms_check()
-{
-	unsigned short rc;
-	unsigned short free_k;
-
-	/* Check for an XMS server.  */
-	asm volatile("
-		int $0x2f
-	" : "=a" (rc)
-	  : "a" (0x4300));
-	if ((rc & 0xff) != 0x80)
-		return;
-
-	/* Get XMS driver's control function.  */
-	asm volatile("
-		pushl	%%ds
-		pushl	%%es
-		int	$0x2f
-		movw	%%es,%0
-		popl	%%es
-		popl	%%ds
-	" : "=r" (xms_control.seg), "=b" (xms_control.ofs)
-	  : "a" (0x4310));
-
-	/* See how much memory is available.  */
-	asm volatile(CALL_XMS
-	  : "=a" (free_k)
-	  : "a" (0x0800)
-	  : "ebx", "edx");
-	if (free_k * 1024 == 0)
-		return;
-
-	xms_phys_free_size = (unsigned)free_k * 1024;
-
-	/* Grab the biggest memory block we can get.  */
-	asm volatile(CALL_XMS
-	  : "=a" (rc), "=d" (free_handle)
-	  : "a" (0x0900), "d" (free_k)
-	  : "ebx");
-	if (!rc)
-		i16_die("XMS error: can't allocate extended memory");
-
-	free_handle_allocated = 1;
-
-	/* Lock it down.  */
-	asm volatile(CALL_XMS "
-		shll	$16,%%edx
-		movw	%%bx,%%dx
-	" : "=a" (rc), "=d" (xms_phys_free_mem)
-	  : "a" (0x0c00), "d" (free_handle)
-	  : "ebx");
-	if (!rc)
-		i16_die("XMS error: can't lock down extended memory");
-
-	free_handle_locked = 1;
-
-	/* We need to update phys_mem_max here
-	   instead of just letting phys_mem_add() do it
-	   when the memory is collected with phys_mem_collect(),
-	   because VCPI initialization needs to know the top of physical memory
-	   before phys_mem_collect() is called.
-	   See i16_vcpi.c for the gross details.  */
-	if (phys_mem_max < xms_phys_free_mem + xms_phys_free_size)
-		phys_mem_max = xms_phys_free_mem + xms_phys_free_size;
-
-	i16_enable_a20 = i16_xms_enable_a20;
-	i16_disable_a20 = i16_xms_disable_a20;
-
-	do_debug(i16_puts("XMS detected"));
-}
-
-void i16_xms_shutdown()
-{
-	unsigned short rc;
-
-	if (free_handle_locked)
-	{
-		/* Unlock our memory block.  */
-		asm volatile(CALL_XMS
-		  : "=a" (rc)
-		  : "a" (0x0d00), "d" (free_handle)
-		  : "ebx");
-		free_handle_locked = 0;
-		if (!rc)
-			i16_die("XMS error: can't unlock extended memory");
-	}
-
-	if (free_handle_allocated)
-	{
-		/* Free the memory block.  */
-		asm volatile(CALL_XMS
-		  : "=a" (rc)
-		  : "a" (0x0a00), "d" (free_handle)
-		  : "ebx");
-		free_handle_allocated = 0;
-		if (!rc)
-			i16_die("XMS error: can't free extended memory");
-	}
-}
-