summaryrefslogtreecommitdiffstats
path: root/lib/libc/mips/string/bzero.S
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libc/mips/string/bzero.S')
-rw-r--r--lib/libc/mips/string/bzero.S74
1 files changed, 0 insertions, 74 deletions
diff --git a/lib/libc/mips/string/bzero.S b/lib/libc/mips/string/bzero.S
deleted file mode 100644
index cb5d258..0000000
--- a/lib/libc/mips/string/bzero.S
+++ /dev/null
@@ -1,74 +0,0 @@
-/*-
- * 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. 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.
- */
-
-#include <machine/asm.h>
-
-#if defined(LIBC_SCCS)
- .text
- .asciz "$OpenBSD$"
-#endif /* LIBC_SCCS */
-
-/* bzero(s1, n) */
-
-LEAF(bzero)
- .set noreorder
- blt a1, 12, smallclr # small amount to clear?
- subu a3, zero, a0 # compute # bytes to word align address
- and a3, a3, 3
- beq a3, zero, 1f # skip if word aligned
- subu a1, a1, a3 # subtract from remaining count
- SWHI zero, 0(a0) # clear 1, 2, or 3 bytes to align
- addu a0, a0, a3
-1:
- and v0, a1, 3 # compute number of words left
- subu a3, a1, v0
- move a1, v0
- addu a3, a3, a0 # compute ending address
-2:
- addu a0, a0, 4 # clear words
- bne a0, a3, 2b # unrolling loop doesnt help
- sw zero, -4(a0) # since we are limited by memory speed
-smallclr:
- ble a1, zero, 2f
- addu a3, a1, a0 # compute ending address
-1:
- addu a0, a0, 1 # clear bytes
- bne a0, a3, 1b
- sb zero, -1(a0)
-2:
- j ra
- nop
-END(bzero)
OpenPOWER on IntegriCloud