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, 158 deletions

diff --git a/i386/dos/dos_open.c b/i386/dos/dos_open.c
deleted file mode 100644
index 7e6ef2bf..00000000
--- a/i386/dos/dos_open.c
+++ /dev/null
@@ -1,158 +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 <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <errno.h>
-
-#include "dos_io.h"
-#include "vm_param.h"
-#include "debug.h"
-
-int dos_open(const char *s, int flags, int mode, dos_fd_t *out_fh)
-{
-	struct real_call_data real_call_data;
-	int err = EINVAL; /*XXX*/
-	vm_offset_t dos_buf_phys = (vm_offset_t)kvtophys(dos_buf);
-
-	assert(dos_buf); assert(dos_buf_phys);
-	assert(dos_buf_phys < 0x100000);
-
-	dos_init_rcd(&real_call_data);
-
-	if (strlen(s)+1 > DOS_BUF_SIZE)
-		return E2BIG;
-	strcpy(dos_buf, s);
-	real_call_data.ds = dos_buf_phys >> 4;
-	real_call_data.edx = dos_buf_phys & 15;
-
-	/* Possible situations:
-
-	-	3d
-	C	3d || 3c
-	 T	3d (ensure that it exists), close, 3c
-	CT	3c
-	  X	3d
-	C X	3d (ensure that it doesn't exist), 3c
-	 TX	3d (ensure that it exists), close, 3c
-	CTX	3d (ensure that it doesn't exist), 3c
-	*/
-
-	if ((flags & (O_CREAT | O_EXCL | O_TRUNC)) != (O_CREAT | O_TRUNC))
-	{
-		/* First try opening the file with function 0x3D.  */
-		real_call_data.eax = 0x3d40 | (flags & O_ACCMODE);
-		real_call_data.ecx = 0;
-		real_int(0x21, &real_call_data);
-		err = dos_check_err(&real_call_data);
-		if (!err)
-			*out_fh = real_call_data.eax & 0xffff;
-	}
-
-	/* Now based on the result, determine what to do next.  */
-	switch (flags & (O_CREAT | O_EXCL | O_TRUNC))
-	{
-		case 0:
-		case 0 | O_EXCL:
-			if (!err)
-				goto success;
-			else
-				return err;
-		case O_CREAT:
-			if (!err)
-				goto success;
-			else
-				break;
-		case O_CREAT | O_EXCL:
-		case O_CREAT | O_TRUNC | O_EXCL:
-			if (!err)
-			{
-				/* The file exists, but wasn't supposed to.
-				   Close it and return an error.  */
-				dos_close(real_call_data.eax & 0xffff);
-				return EEXIST;
-			}
-			else
-				break;
-		case O_TRUNC:
-		case O_TRUNC | O_EXCL:
-			if (!err)
-			{
-				/* We've verified that the file exists -
-				   now close it and reopen it with CREAT
-				   so it'll be truncated as requested.  */
-				dos_close(real_call_data.eax & 0xffff);
-				break;
-			}
-			else
-				return err;
-		case O_CREAT | O_TRUNC:
-			/* This is the one case in which
-			   we didn't try to open the file above at all.
-			   Just fall on through and open it with CREAT.  */
-			break;
-	}
-
-	/* Now try opening the file with DOS's CREAT call,
-	   which truncates the file if it already exists.  */
-	real_call_data.eax = 0x3c00;
-	real_call_data.ecx = mode & S_IWUSR ? 0 : 1;
-	real_int(0x21, &real_call_data);
-	if (!(err = dos_check_err(&real_call_data)))
-	{
-		*out_fh = real_call_data.eax & 0xffff;
-
-		/* We don't have to worry about O_APPEND here,
-		   because we know the file starts out empty.  */
-
-		return 0;
-	}
-
-	return err;
-
-	success:
-
-	/* If the caller requested append access,
-	   just seek to the end of the file once on open.
-	   We can't implement full POSIX behavior here without help,
-	   since DOS file descriptors don't have an append mode.
-	   To get full POSIX behavior,
-	   the caller must seek to the end of the file before every write.
-	   However, seeking to the end only on open
-	   is probably enough for most typical uses.  */
-	if (flags & O_APPEND)
-	{
-		vm_offset_t newpos;
-		err = dos_seek(*out_fh, 0, SEEK_END, &newpos);
-		if (err)
-		{
-			dos_close(*out_fh);
-			return err;
-		}
-	}
-
-	return 0;
-}
-