NetBSD/lib/libc/arch/ns32k/string/strncmp.S

/*	$NetBSD: strncmp.S,v 1.4 1999/06/06 20:20:46 matthias Exp $	*/

/* 
 * Written by Matthias Pfaller, 1996
 * Public domain.
 */

#include <machine/asm.h>

#if defined(LIBC_SCCS)
	RCSID("$NetBSD: strncmp.S,v 1.4 1999/06/06 20:20:46 matthias Exp $")
# if defined(STRCMP)
	RCSID("$Masqueraded: as strcmp $")
# endif
#endif

#if defined(STRCMP)
/*
 * int
 * strcmp(const char *s1, const char *s2)
 */
KENTRY(strcmp, 8)
	enter	[r4],0
	movd	-1,r0
#else
/*
 * int
 * strncmp(const char *s1, const char *s2, size_t len)
 */
KENTRY(strncmp, 12)
	enter	[r4],0
	movd	B_ARG2,r0
	cmpqd	0,r0
	beq	1f
#endif
	movd	B_ARG0,r1
	movd	B_ARG1,r2
	movqd	0,r4
	cmpsb	u
	bfc	0f
	cmpb	0(r1),0(r2)
0:	movqd	0,r0
	beq	1f
	movqd	-1,r0
	blo	1f
	movqd	1,r0
1:	exit	[r4]
	ret	ARGS
Go for correctness instead of speed as suggested by Ian Dall. This fixes pr#port-pc532/7710. 1999-06-07 00:20:46 +04:00			`/* $NetBSD: strncmp.S,v 1.4 1999/06/06 20:20:46 matthias Exp $ */`
* Add correct $NetBSD$ headers everywhere. * Remove $Id$ headers. * Support LIB_SCCS in all files. * Use local labels where ever possible. * Use cpufunc.h instead of __asm__ when possible. * Access labels with _C_LABEL and _ASM_LABEL. * Always set errno by calling cerror. * No more FRAME/EMARF. * No more SVC, use SYSTRAP instead. * Use "$Masqueraded: as XXX $" to show e.g. memcpy compiled as bcopy. * Rewrite vfork to work even whith a "real" vfork system call. * Make cerror take care of _REENTRANT. 1997-05-08 17:38:29 +04:00
The pc532 port now has string functions in assembler. strcmp.S, strcpy.S and strlen.S are contributed by Randy Hyde. 1996-09-24 13:29:52 +04:00			`/*`
			`* Written by Matthias Pfaller, 1996`
			`* Public domain.`
			`*/`

			`#include <machine/asm.h>`

			`#if defined(LIBC_SCCS)`
Go for correctness instead of speed as suggested by Ian Dall. This fixes pr#port-pc532/7710. 1999-06-07 00:20:46 +04:00			`RCSID("$NetBSD: strncmp.S,v 1.4 1999/06/06 20:20:46 matthias Exp $")`
			`# if defined(STRCMP)`
			`RCSID("$Masqueraded: as strcmp $")`
			`# endif`
The pc532 port now has string functions in assembler. strcmp.S, strcpy.S and strlen.S are contributed by Randy Hyde. 1996-09-24 13:29:52 +04:00			`#endif`

Go for correctness instead of speed as suggested by Ian Dall. This fixes pr#port-pc532/7710. 1999-06-07 00:20:46 +04:00			`#if defined(STRCMP)`
			`/*`
			`* int`
			`* strcmp(const char s1, const char s2)`
			`*/`
			`KENTRY(strcmp, 8)`
			`enter [r4],0`
			`movd -1,r0`
			`#else`
The pc532 port now has string functions in assembler. strcmp.S, strcpy.S and strlen.S are contributed by Randy Hyde. 1996-09-24 13:29:52 +04:00			`/*`
			`* int`
			`* strncmp(const char s1, const char s2, size_t len)`
			`*/`
Prepare assembler source for -mrtd kernels. 1998-04-04 02:58:08 +04:00			`KENTRY(strncmp, 12)`
The pc532 port now has string functions in assembler. strcmp.S, strcpy.S and strlen.S are contributed by Randy Hyde. 1996-09-24 13:29:52 +04:00			`enter [r4],0`
			`movd B_ARG2,r0`
			`cmpqd 0,r0`
			`beq 1f`
Go for correctness instead of speed as suggested by Ian Dall. This fixes pr#port-pc532/7710. 1999-06-07 00:20:46 +04:00			`#endif`
The pc532 port now has string functions in assembler. strcmp.S, strcpy.S and strlen.S are contributed by Randy Hyde. 1996-09-24 13:29:52 +04:00			`movd B_ARG0,r1`
			`movd B_ARG1,r2`
			`movqd 0,r4`
			`cmpsb u`
			`bfc 0f`
			`cmpb 0(r1),0(r2)`
			`0: movqd 0,r0`
			`beq 1f`
			`movqd -1,r0`
			`blo 1f`
			`movqd 1,r0`
			`1: exit [r4]`
Prepare assembler source for -mrtd kernels. 1998-04-04 02:58:08 +04:00			`ret ARGS`