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-rw-r--r--lib/libc/mips/string/bzero.S101
1 files changed, 0 insertions, 101 deletions
diff --git a/lib/libc/mips/string/bzero.S b/lib/libc/mips/string/bzero.S
deleted file mode 100644
index 66f29dd..0000000
--- a/lib/libc/mips/string/bzero.S
+++ /dev/null
@@ -1,101 +0,0 @@
-/* $NetBSD: bzero.S,v 1.10 2009/12/14 02:53:52 matt Exp $ */
-
-/*-
- * Copyright (c) 1991, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Ralph Campbell.
- *
- * 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. 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.
- */
-
-#include <machine/asm.h>
-__FBSDID("$FreeBSD$");
-
-#if defined(LIBC_SCCS) && !defined(lint)
-#if 0
- ASMSTR("from: @(#)bzero.s 8.1 (Berkeley) 6/4/93")
-#else
- ASMSTR("$NetBSD: bzero.S,v 1.10 2009/12/14 02:53:52 matt Exp $")
-#endif
-#endif /* LIBC_SCCS and not lint */
-
-#define _LOCORE /* XXX not really, just assembly-code source */
-#include <machine/endian.h>
-
-#ifdef __ABICALLS__
- .abicalls
-#endif
-
-/* bzero(s1, n) */
-
-LEAF(bzero)
- .set noreorder
- blt a1, 3*SZREG, smallclr # small amount to clear?
- PTR_SUBU a3, zero, a0 # compute # bytes to word align address
- and a3, a3, SZREG-1
- beq a3, zero, 1f # skip if word aligned
-#if SZREG == 4
- PTR_SUBU a1, a1, a3 # subtract from remaining count
- SWHI zero, 0(a0) # clear 1, 2, or 3 bytes to align
- PTR_ADDU a0, a0, a3
-#endif
-#if SZREG == 8
- PTR_SUBU a1, a1, a3 # subtract from remaining count
- PTR_ADDU a0, a0, a3 # align dst to next word
- sll a3, a3, 3 # bits to bytes
- li a2, -1 # make a mask
-#if _BYTE_ORDER == _BIG_ENDIAN
- REG_SRLV a2, a2, a3 # we want to keep the MSB bytes
-#endif
-#if _BYTE_ORDER == _LITTLE_ENDIAN
- REG_SLLV a2, a2, a3 # we want to keep the LSB bytes
-#endif
- nor a2, zero, a2 # complement the mask
- REG_L v0, -SZREG(a0) # load the word to partially clear
- and v0, v0, a2 # clear the bytes
- REG_S v0, -SZREG(a0) # store it back
-#endif
-1:
- and v0, a1, SZREG-1 # compute number of words left
- PTR_SUBU a3, a1, v0
- move a1, v0
- PTR_ADDU a3, a3, a0 # compute ending address
-2:
- PTR_ADDU a0, a0, SZREG # clear words
- bne a0, a3, 2b # unrolling loop doesnt help
- REG_S zero, -SZREG(a0) # since we are limited by memory speed
-smallclr:
- ble a1, zero, 2f
- PTR_ADDU a3, a1, a0 # compute ending address
-1:
- PTR_ADDU a0, a0, 1 # clear bytes
- bne a0, a3, 1b
- sb zero, -1(a0)
-2:
- j ra
- nop
-END(bzero)
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