diff options
Diffstat (limited to 'sys/arch/i386/stand/libsa/asm.S')
| -rw-r--r-- | sys/arch/i386/stand/libsa/asm.S | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/sys/arch/i386/stand/libsa/asm.S b/sys/arch/i386/stand/libsa/asm.S new file mode 100644 index 00000000000..23de81028bc --- /dev/null +++ b/sys/arch/i386/stand/libsa/asm.S @@ -0,0 +1,108 @@ +/* $OpenBSD: asm.S,v 1.1 1997/03/31 03:12:08 weingart Exp $ */ +/* $NetBSD: srt0.c,v 1.3 1994/10/27 04:21:59 cgd Exp $ */ + +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)srt0.c 5.3 (Berkeley) 4/28/91 + */ + +/* + * Startup code for standalone system + * Non-relocating version -- for programs which are loaded by boot + * Relocating version for boot + * Small relocating version for "micro" boot + */ + + .globl _inb +_inb: movl 4(%esp),%edx + subl %eax,%eax # clr eax + NOP + inb %dx,%al + ret + + .globl _outb +_outb: movl 4(%esp),%edx + NOP + movl 8(%esp),%eax + outb %al,%dx + ret + + .globl ___udivsi3 +___udivsi3: + movl 4(%esp),%eax + xorl %edx,%edx + divl 8(%esp) + ret + + .globl ___divsi3 +___divsi3: + movl 4(%esp),%eax + xorl %edx,%edx + cltd + idivl 8(%esp) + ret + + .globl _insw +_insw: + pushl %edi + movw 8(%esp),%dx + movl 12(%esp),%edi + movl 16(%esp),%ecx + NOP + cld + nop + .byte 0x66,0xf2,0x6d # rep insw + nop + movl %edi,%eax + popl %edi + ret + + # outsw(port,addr,cnt) + .globl _outsw +_outsw: + pushl %esi + movw 8(%esp),%dx + movl 12(%esp),%esi + movl 16(%esp),%ecx + NOP + cld + nop + .byte 0x66,0xf2,0x6f # rep outsw + nop + movl %esi,%eax + popl %esi + ret + |