diff options
Diffstat (limited to 'sys/arm/arm/bcopy_page.S')
| -rw-r--r-- | sys/arm/arm/bcopy_page.S | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sys/arm/arm/bcopy_page.S b/sys/arm/arm/bcopy_page.S new file mode 100644 index 000000000000..e718a06109b4 --- /dev/null +++ b/sys/arm/arm/bcopy_page.S @@ -0,0 +1,142 @@ +/* $NetBSD: bcopy_page.S,v 1.7 2003/10/13 21:03:13 scw Exp $ */ + +/*- + * Copyright (c) 1995 Scott Stevens + * All rights reserved. + * + * 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 Scott Stevens. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + * + * RiscBSD kernel project + * + * bcopy_page.S + * + * page optimised bcopy and bzero routines + * + * Created : 08/04/95 + */ + +#include <machine/asm.h> + +__FBSDID("$FreeBSD$"); + +#include "assym.inc" + + +/* + * armv5e version of bcopy_page + */ +ENTRY(bcopy_page) + pld [r0] + stmfd sp!, {r4, r5} + _SAVE({r4, r5}) + mov ip, #32 + ldr r2, [r0], #0x04 /* 0x00 */ + ldr r3, [r0], #0x04 /* 0x04 */ +1: pld [r0, #0x18] /* Prefetch 0x20 */ + ldr r4, [r0], #0x04 /* 0x08 */ + ldr r5, [r0], #0x04 /* 0x0c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x10 */ + ldr r3, [r0], #0x04 /* 0x14 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x18 */ + ldr r5, [r0], #0x04 /* 0x1c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x20 */ + ldr r3, [r0], #0x04 /* 0x24 */ + pld [r0, #0x18] /* Prefetch 0x40 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x28 */ + ldr r5, [r0], #0x04 /* 0x2c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x30 */ + ldr r3, [r0], #0x04 /* 0x34 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x38 */ + ldr r5, [r0], #0x04 /* 0x3c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x40 */ + ldr r3, [r0], #0x04 /* 0x44 */ + pld [r0, #0x18] /* Prefetch 0x60 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x48 */ + ldr r5, [r0], #0x04 /* 0x4c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x50 */ + ldr r3, [r0], #0x04 /* 0x54 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x58 */ + ldr r5, [r0], #0x04 /* 0x5c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x60 */ + ldr r3, [r0], #0x04 /* 0x64 */ + pld [r0, #0x18] /* Prefetch 0x80 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x68 */ + ldr r5, [r0], #0x04 /* 0x6c */ + strd r2, [r1], #0x08 + ldr r2, [r0], #0x04 /* 0x70 */ + ldr r3, [r0], #0x04 /* 0x74 */ + strd r4, [r1], #0x08 + ldr r4, [r0], #0x04 /* 0x78 */ + ldr r5, [r0], #0x04 /* 0x7c */ + strd r2, [r1], #0x08 + subs ip, ip, #0x01 + ldrgt r2, [r0], #0x04 /* 0x80 */ + ldrgt r3, [r0], #0x04 /* 0x84 */ + strd r4, [r1], #0x08 + bgt 1b + ldmfd sp!, {r4, r5} + RET +END(bcopy_page) + +/* + * armv5e version of bzero_page + */ +ENTRY(bzero_page) + mov r1, #PAGE_SIZE + mov r2, #0 + mov r3, #0 +1: strd r2, [r0], #8 /* 32 */ + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 /* 64 */ + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 /* 96 */ + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 /* 128 */ + strd r2, [r0], #8 + strd r2, [r0], #8 + strd r2, [r0], #8 + subs r1, r1, #128 + bne 1b + RET +END(bzero_page) |