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/pc/NOTES: Remove file.
	* i386/pc/debug.h: Likewise.
	* i386/pc/exit.c: Likewise.
	* i386/pc/gdt.h: Likewise.
	* i386/pc/gdt_sels.h: Likewise.
	* i386/pc/i16/i16_a20.c: Likewise.
	* i386/pc/i16/i16_a20.h: Likewise.
	* i386/pc/i16/i16_bios.h: Likewise.
	* i386/pc/i16/i16_exit.c: Likewise.
	* i386/pc/i16/i16_ext_mem.c: Likewise.
	* i386/pc/i16/i16_init.c: Likewise.
	* i386/pc/i16/i16_main.c: Likewise.
	* i386/pc/i16/i16_pic.c: Likewise.
	* i386/pc/i16/i16_putchar.c: Likewise.
	* i386/pc/i16/i16_raw.c: Likewise.
	* i386/pc/i16/i16_raw_test_a20.S: Likewise.
	* i386/pc/i16/i16_real_int.S: Likewise.
	* i386/pc/i16/i16_switch.h: Likewise.
	* i386/pc/i16/phys_mem_collect.c: Likewise.
	* i386/pc/i16/phys_mem_sources.h: Likewise.
	* i386/pc/i16/raw_exit.c: Likewise.
	* i386/pc/i16/raw_real_int.c: Likewise.
	* i386/pc/ipl.h: Likewise.
	* i386/pc/irq.h: Likewise.
	* i386/pc/irq_list.h: Likewise.
	* i386/pc/pc_asm.sym: Likewise.
	* i386/pc/phys_mem.h: Likewise.
	* i386/pc/phys_mem_add.c: Likewise.
	* i386/pc/pic.c: Likewise.
	* i386/pc/pic.h: Likewise.
	* i386/pc/putchar.c: Likewise.
	* i386/pc/real.h: Likewise.
	* i386/pc/real_tss.c: Likewise.
	* i386/pc/real_tss.h: Likewise.
	* i386/pc/real_tss_def.S: Likewise.
	* i386/pc/rv86/config.h: Likewise.
	* i386/pc/rv86/gdt_sels.h: Likewise.
	* i386/pc/rv86/idt_irq_init.c: Likewise.
	* i386/pc/rv86/rv86_real_int.c: Likewise.
	* i386/pc/rv86/rv86_real_int_asm.S: Likewise.
	* i386/pc/rv86/rv86_reflect_irq.S: Likewise.
	* i386/pc/rv86/rv86_trap_handler.S: Likewise.
	* i386/pc/rv86/trap_handler.S: Likewise.

1 files changed, 0 insertions, 167 deletions

diff --git a/i386/pc/rv86/rv86_trap_handler.S b/i386/pc/rv86/rv86_trap_handler.S
deleted file mode 100644
index 793f6b6..0000000
--- a/i386/pc/rv86/rv86_trap_handler.S
+++ /dev/null
@@ -1,167 +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/asm.h>
-#include <mach/machine/eflags.h>
-
-#include "i386_asm.h"
-#include "trap.h"
-#include "trap_asm.h"
-
-	.text
-
-ENTRY(rv86_trap_handler)
-	cmpl	$T_GENERAL_PROTECTION,TR_TRAPNO(%esp)
-	jz	gpf_from_v86
-
-	UNEXPECTED_TRAP
-
-gpf_from_v86:
-
-	/* Load the linear/physical-address data segment,
-	   for easy access to real-mode memory.  */
-	movl	$LINEAR_DS,%eax
-	movw	%ax,%ds
-
-	/* Find the physical address of the trapping instruction (ebx).  */
-	movzwl	TR_CS(%esp),%ebx
-	shll	$4,%ebx
-	addl	TR_EIP(%esp),%ebx
-
-	/* See if we're just trying to get out of v86 mode.  */
-	cmpl	%ss:EXT(rv86_return_int_pa),%ebx
-	je	EXT(rv86_return)
-
-	/* Check the instruction (al).  */
-	movb	(%ebx),%al
-	cmpb	$0xcd,%al
-	je	gpf_int_n
-
-	UNEXPECTED_TRAP
-
-
-gpf_int_n:
-
-	/* Bump the ip past the int instruction.  */
-	addw	$2,TR_EIP(%esp)
-
-	/* Find the real mode interrupt vector number (esi).  */
-	movzbl	1(%ebx),%esi
-
-	/* See if it's a copy-extended-memory interrupt request;
-	   if so, just handle it here.  */
-	cmpl	$0x15,%esi
-	jne	1f
-	cmpb	$0x87,TR_EAX+1(%esp)
-	je	copy_ext_mem
-1:
-
-	/* XXX The stuff down here is essentially the same as in moss.  */
-
-reflect_v86_intr:
-
-	/* Find the address of the real mode interrupt vector (esi).  */
-	shll	$2,%esi
-
-	/* Make room for the real-mode interrupt stack frame.  */
-	subw	$6,TR_ESP(%esp)
-
-	/* Find the physical address of the v86 stack (ebx).  */
-	movzwl	TR_SS(%esp),%ebx
-	shll	$4,%ebx
-	addl	TR_ESP(%esp),%ebx
-
-	/* Store the return information into the v86 stack frame.  */
-	movl	TR_EIP(%esp),%eax
-	movw	%ax,(%ebx)
-	movl	TR_CS(%esp),%eax
-	movw	%ax,2(%ebx)
-	movl	TR_EFLAGS(%esp),%eax
-	movw	%ax,4(%ebx)
-
-	/* Find the real-mode interrupt vector to invoke,
-	   and set up the real_call_thread's kernel stack frame
-	   to point to it.  */
-	movl	(%esi),%eax
-	movw	%ax,TR_EIP(%esp)
-	shrl	$16,%eax
-	movw	%ax,TR_CS(%esp)
-	andl	$-1-EFL_IF-EFL_TF,TR_EFLAGS(%esp)
-
-	/* Restore saved state and return.  */
-	addl	$4*4,%esp
-	popa
-	addl	$4*2,%esp
-	iret
-
-
-
-/* We intercepted a copy-extended-memory software interrupt
-   (int 0x15 function 0x87).
-   This is used by HIMEM.SYS, for example, to manage extended memory.
-   The BIOS's routine isn't going to work in v86 mode,
-   so do it ourselves.  */
-copy_ext_mem:
-
-	/* Find the parameter block provided by the caller (ebx).  */
-	movzwl	TR_V86_ES(%esp),%ebx
-	movzwl	TR_ESI(%esp),%eax
-	shll	$4,%ebx
-	addl	%eax,%ebx
-
-	/* Source address (esi).  */
-	movl	0x12(%ebx),%esi
-	andl	$0x00ffffff,%esi
-
-	/* Destination address (edi).  */
-	movl	0x1a(%ebx),%edi
-	andl	$0x00ffffff,%edi
-
-	/* Number of bytes (ecx).  */
-	movzwl	TR_ECX(%esp),%ecx
-	addl	%ecx,%ecx
-
-	/* Use the standard i386 bcopy routine to copy the data.
-	   This assumes it's "friendly" in its use of segment registers
-	   (i.e. always uses ss for stack data and ds/es for the data to copy).
-	   The bcopy is simple enough that this should always be true.  */
-	movw	%ds,%ax
-	movw	%ax,%es
-	cld
-	pushl	%ecx
-	pushl	%edi
-	pushl	%esi
-	call	EXT(bcopy)
-	addl	$3*4,%esp
-
-	/* Clear the carry flag to indicate that the copy was successful.
-	   AH is also cleared, below.  */
-	andl	$-1-EFL_CF,TR_EFLAGS(%esp)
-
-	/* Restore saved state and return.  */
-	addl	$4*4,%esp
-	popa
-	xorb	%ah,%ah
-	addl	$4*2,%esp
-	iret
-