diff options
Diffstat (limited to 'i386/pc/rv86/rv86_reflect_irq.S')
| -rw-r--r-- | i386/pc/rv86/rv86_reflect_irq.S | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/i386/pc/rv86/rv86_reflect_irq.S b/i386/pc/rv86/rv86_reflect_irq.S deleted file mode 100644 index 5d68fae..0000000 --- a/i386/pc/rv86/rv86_reflect_irq.S +++ /dev/null @@ -1,113 +0,0 @@ -/* - * Copyright (c) 1995 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 "trap.h" -#include "trap_asm.h" -#include "pc_asm.h" -#include "i386_asm.h" - -/* - * Define a set of interrupt handlers to reflect interrupts to v86 mode. - */ - - .text - -#define master_base 0x08 -#define slave_base 0x70 - -#define irq(pic,picnum,irqnum) \ -ENTRY(rv86_reflect_irq##irqnum) ;\ - pushl $pic##_base+picnum ;\ - pushl $0x80000000+irqnum /* (for debug) */ ;\ - jmp allintrs - -#include "irq_list.h" - - -allintrs: - pusha - pushl %ds - pushl %es - pushl %fs - pushl %gs - - /* Load the normal kernel segment registers. */ - movw %ss,%ax - movw %ax,%ds - movw %ax,%es - - /* See if we came from v86 mode. */ - testl $EFL_VM,TR_EFLAGS(%esp) - jnz int_from_v86 - - movl TR_ERR(%esp),%eax - pushl $dummy_rcd - pushl %eax - call EXT(rv86_real_int) - addl $2*4,%esp - - popl %gs - popl %fs - popl %es - popl %ds - popa - addl $2*4,%esp - iret - -int_from_v86: - - /* Save the v86 stack pointer before handling the interrupt. - We need this in order to handle recursive reflected interrupts - possibly interspersed with protected-mode interrupts. */ - movl EXT(rv86_usp),%esi - movl EXT(rv86_usp)+4,%edi - movl EXT(real_tss)+TSS_ESP0,%ebx - - movl TR_ESP(%esp),%eax - subw $6,%ax /* allocate a real-mode interrupt stack frame. */ - movl %eax,EXT(rv86_usp) - movl TR_SS(%esp),%eax - movw %ax,EXT(rv86_usp)+4 - - movl TR_ERR(%esp),%eax - pushl $dummy_rcd - pushl %eax - call EXT(rv86_real_int) - addl $2*4,%esp - - movl %esi,EXT(rv86_usp) - movl %edi,EXT(rv86_usp)+4 - movl %ebx,EXT(real_tss)+TSS_ESP0 - - addl $4*4,%esp - popa - addl $2*4,%esp - iret - - /* Dummy real_call_data structure (always all zero) - to use when reflecting hardware interrupts. */ - .comm dummy_rcd,RCD_SIZE - |