diff options
Diffstat (limited to 'sys/arch/vax/stand/str.s')
| -rw-r--r-- | sys/arch/vax/stand/str.s | 66 |
1 files changed, 63 insertions, 3 deletions
diff --git a/sys/arch/vax/stand/str.s b/sys/arch/vax/stand/str.s index 7be8bd73fc8..c2d4e083723 100644 --- a/sys/arch/vax/stand/str.s +++ b/sys/arch/vax/stand/str.s @@ -1,5 +1,5 @@ -/* $OpenBSD: str.s,v 1.2 1997/05/29 00:04:28 niklas Exp $ */ -/* $NetBSD: str.s,v 1.2 1996/08/02 16:18:40 ragge Exp $ */ +/* $OpenBSD: str.s,v 1.3 1998/02/03 11:48:29 maja Exp $ */ +/* $NetBSD: str.s,v 1.3 1997/03/15 13:04:30 ragge Exp $ */ /* * Copyright (c) 1996 Ludd, University of Lule}, Sweden. * All rights reserved. @@ -32,12 +32,72 @@ */ /* - * Small versions of the most common string functions not using any + * Small versions of the most common functions not using any * emulated instructions. */ #include "../include/asm.h" +/* + * atoi() used in devopen. + */ +ENTRY(atoi, 0); + movl 4(ap),r1 + clrl r0 + +2: movzbl (r1)+,r2 + cmpb r2,$48 + blss 1f + cmpb r2,$57 + bgtr 1f + subl2 $48,r2 + mull2 $10,r0 + addl2 r2,r0 + brb 2b +1: ret + +/* + * index() small and easy. + * doesnt work if we search for null. + */ +ENTRY(index, 0); + movq 4(ap),r0 +1: cmpb (r0), r1 + beql 2f + tstb (r0)+ + bneq 1b + clrl r0 +2: ret + +/* + * cmpc3 is emulated on MVII. + */ +ENTRY(bcmp, 0); + movl 4(ap), r2 + movl 8(ap), r1 + movl 12(ap), r0 +2: cmpb (r2)+, (r1)+ + bneq 1f + decl r0 + bneq 2b +1: ret + +/* + * Is movc3/movc5 emulated on any CPU? I dont think so; use them here. + */ +ENTRY(bzero,0); + movl 4(ap), r0 + movl 8(ap), r1 + movc5 $0,(r0),$0,r1,(r0) + ret + +ENTRY(bcopy,0); + movl 4(ap), r0 + movl 8(ap), r1 + movl 12(ap), r2 + movc3 r2, (r0), (r1) + ret + ENTRY(strlen, 0); movl 4(ap), r0 1: tstb (r0)+ |