1784 lines
43 KiB
ArmAsm
1784 lines
43 KiB
ArmAsm
/* $NetBSD: memcpy_xscale.S,v 1.1 2003/10/14 07:51:45 scw Exp $ */
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/*
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* Copyright 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Steve C. Woodford for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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/* LINTSTUB: Func: void *memcpy(void *dst, const void *src, size_t len) */
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ENTRY(memcpy)
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pld [r1]
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cmp r2, #0x0c
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ble .Lmemcpy_short /* <= 12 bytes */
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mov r3, r0 /* We must not clobber r0 */
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/* Word-align the destination buffer */
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ands ip, r3, #0x03 /* Already word aligned? */
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beq .Lmemcpy_wordaligned /* Yup */
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cmp ip, #0x02
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ldrb ip, [r1], #0x01
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sub r2, r2, #0x01
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strb ip, [r3], #0x01
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ldrleb ip, [r1], #0x01
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suble r2, r2, #0x01
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strleb ip, [r3], #0x01
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ldrltb ip, [r1], #0x01
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sublt r2, r2, #0x01
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strltb ip, [r3], #0x01
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/* Destination buffer is now word aligned */
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.Lmemcpy_wordaligned:
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ands ip, r1, #0x03 /* Is src also word-aligned? */
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bne .Lmemcpy_bad_align /* Nope. Things just got bad */
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/* Quad-align the destination buffer */
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tst r3, #0x07 /* Already quad aligned? */
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ldrne ip, [r1], #0x04
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stmfd sp!, {r4-r9} /* Free up some registers */
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subne r2, r2, #0x04
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strne ip, [r3], #0x04
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/* Destination buffer quad aligned, source is at least word aligned */
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subs r2, r2, #0x80
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blt .Lmemcpy_w_lessthan128
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/* Copy 128 bytes at a time */
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.Lmemcpy_w_loop128:
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ldr r4, [r1], #0x04 /* LD:00-03 */
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ldr r5, [r1], #0x04 /* LD:04-07 */
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pld [r1, #0x18] /* Prefetch 0x20 */
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ldr r6, [r1], #0x04 /* LD:08-0b */
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ldr r7, [r1], #0x04 /* LD:0c-0f */
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ldr r8, [r1], #0x04 /* LD:10-13 */
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ldr r9, [r1], #0x04 /* LD:14-17 */
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strd r4, [r3], #0x08 /* ST:00-07 */
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ldr r4, [r1], #0x04 /* LD:18-1b */
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ldr r5, [r1], #0x04 /* LD:1c-1f */
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strd r6, [r3], #0x08 /* ST:08-0f */
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ldr r6, [r1], #0x04 /* LD:20-23 */
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ldr r7, [r1], #0x04 /* LD:24-27 */
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pld [r1, #0x18] /* Prefetch 0x40 */
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strd r8, [r3], #0x08 /* ST:10-17 */
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ldr r8, [r1], #0x04 /* LD:28-2b */
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ldr r9, [r1], #0x04 /* LD:2c-2f */
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strd r4, [r3], #0x08 /* ST:18-1f */
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ldr r4, [r1], #0x04 /* LD:30-33 */
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ldr r5, [r1], #0x04 /* LD:34-37 */
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strd r6, [r3], #0x08 /* ST:20-27 */
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ldr r6, [r1], #0x04 /* LD:38-3b */
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ldr r7, [r1], #0x04 /* LD:3c-3f */
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strd r8, [r3], #0x08 /* ST:28-2f */
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ldr r8, [r1], #0x04 /* LD:40-43 */
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ldr r9, [r1], #0x04 /* LD:44-47 */
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pld [r1, #0x18] /* Prefetch 0x60 */
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strd r4, [r3], #0x08 /* ST:30-37 */
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ldr r4, [r1], #0x04 /* LD:48-4b */
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ldr r5, [r1], #0x04 /* LD:4c-4f */
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strd r6, [r3], #0x08 /* ST:38-3f */
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ldr r6, [r1], #0x04 /* LD:50-53 */
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ldr r7, [r1], #0x04 /* LD:54-57 */
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strd r8, [r3], #0x08 /* ST:40-47 */
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ldr r8, [r1], #0x04 /* LD:58-5b */
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ldr r9, [r1], #0x04 /* LD:5c-5f */
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strd r4, [r3], #0x08 /* ST:48-4f */
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ldr r4, [r1], #0x04 /* LD:60-63 */
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ldr r5, [r1], #0x04 /* LD:64-67 */
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pld [r1, #0x18] /* Prefetch 0x80 */
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strd r6, [r3], #0x08 /* ST:50-57 */
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ldr r6, [r1], #0x04 /* LD:68-6b */
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ldr r7, [r1], #0x04 /* LD:6c-6f */
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strd r8, [r3], #0x08 /* ST:58-5f */
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ldr r8, [r1], #0x04 /* LD:70-73 */
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ldr r9, [r1], #0x04 /* LD:74-77 */
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strd r4, [r3], #0x08 /* ST:60-67 */
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ldr r4, [r1], #0x04 /* LD:78-7b */
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ldr r5, [r1], #0x04 /* LD:7c-7f */
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strd r6, [r3], #0x08 /* ST:68-6f */
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strd r8, [r3], #0x08 /* ST:70-77 */
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subs r2, r2, #0x80
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strd r4, [r3], #0x08 /* ST:78-7f */
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bge .Lmemcpy_w_loop128
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.Lmemcpy_w_lessthan128:
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adds r2, r2, #0x80 /* Adjust for extra sub */
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ldmeqfd sp!, {r4-r9}
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bxeq lr /* Return now if done */
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subs r2, r2, #0x20
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blt .Lmemcpy_w_lessthan32
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/* Copy 32 bytes at a time */
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.Lmemcpy_w_loop32:
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ldr r4, [r1], #0x04
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ldr r5, [r1], #0x04
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pld [r1, #0x18]
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ldr r6, [r1], #0x04
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ldr r7, [r1], #0x04
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ldr r8, [r1], #0x04
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ldr r9, [r1], #0x04
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strd r4, [r3], #0x08
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ldr r4, [r1], #0x04
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ldr r5, [r1], #0x04
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strd r6, [r3], #0x08
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strd r8, [r3], #0x08
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subs r2, r2, #0x20
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strd r4, [r3], #0x08
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bge .Lmemcpy_w_loop32
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.Lmemcpy_w_lessthan32:
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adds r2, r2, #0x20 /* Adjust for extra sub */
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ldmeqfd sp!, {r4-r9}
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bxeq lr /* Return now if done */
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and r4, r2, #0x18
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rsbs r4, r4, #0x18
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addne pc, pc, r4, lsl #1
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nop
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/* At least 24 bytes remaining */
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ldr r4, [r1], #0x04
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ldr r5, [r1], #0x04
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sub r2, r2, #0x08
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strd r4, [r3], #0x08
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/* At least 16 bytes remaining */
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ldr r4, [r1], #0x04
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ldr r5, [r1], #0x04
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sub r2, r2, #0x08
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strd r4, [r3], #0x08
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/* At least 8 bytes remaining */
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ldr r4, [r1], #0x04
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ldr r5, [r1], #0x04
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subs r2, r2, #0x08
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strd r4, [r3], #0x08
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/* Less than 8 bytes remaining */
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ldmfd sp!, {r4-r9}
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bxeq lr /* Return now if done */
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subs r2, r2, #0x04
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ldrge ip, [r1], #0x04
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strge ip, [r3], #0x04
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bxeq lr /* Return now if done */
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addlt r2, r2, #0x04
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ldrb ip, [r1], #0x01
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cmp r2, #0x02
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ldrgeb r2, [r1], #0x01
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strb ip, [r3], #0x01
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ldrgtb ip, [r1]
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strgeb r2, [r3], #0x01
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strgtb ip, [r3]
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bx lr
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/*
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* At this point, it has not been possible to word align both buffers.
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* The destination buffer is word aligned, but the source buffer is not.
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*/
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.Lmemcpy_bad_align:
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stmfd sp!, {r4-r7}
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bic r1, r1, #0x03
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cmp ip, #2
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ldr ip, [r1], #0x04
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bgt .Lmemcpy_bad3
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beq .Lmemcpy_bad2
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b .Lmemcpy_bad1
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.Lmemcpy_bad1_loop16:
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#ifdef __ARMEB__
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mov r4, ip, lsl #8
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#else
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mov r4, ip, lsr #8
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#endif
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ldr r5, [r1], #0x04
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pld [r1, #0x018]
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ldr r6, [r1], #0x04
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ldr r7, [r1], #0x04
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ldr ip, [r1], #0x04
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#ifdef __ARMEB__
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orr r4, r4, r5, lsr #24
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mov r5, r5, lsl #8
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orr r5, r5, r6, lsr #24
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mov r6, r6, lsl #8
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orr r6, r6, r7, lsr #24
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mov r7, r7, lsl #8
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orr r7, r7, ip, lsr #24
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#else
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orr r4, r4, r5, lsl #24
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mov r5, r5, lsr #8
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orr r5, r5, r6, lsl #24
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mov r6, r6, lsr #8
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orr r6, r6, r7, lsl #24
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mov r7, r7, lsr #8
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orr r7, r7, ip, lsl #24
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#endif
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str r4, [r3], #0x04
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str r5, [r3], #0x04
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str r6, [r3], #0x04
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str r7, [r3], #0x04
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.Lmemcpy_bad1:
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subs r2, r2, #0x10
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bge .Lmemcpy_bad1_loop16
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adds r2, r2, #0x10
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ldmeqfd sp!, {r4-r7}
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bxeq lr /* Return now if done */
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subs r2, r2, #0x04
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sublt r1, r1, #0x03
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blt .Lmemcpy_bad_done
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.Lmemcpy_bad1_loop4:
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#ifdef __ARMEB__
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mov r4, ip, lsl #8
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#else
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mov r4, ip, lsr #8
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#endif
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ldr ip, [r1], #0x04
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subs r2, r2, #0x04
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#ifdef __ARMEB__
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orr r4, r4, ip, lsr #24
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#else
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orr r4, r4, ip, lsl #24
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#endif
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str r4, [r3], #0x04
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bge .Lmemcpy_bad1_loop4
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sub r1, r1, #0x03
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b .Lmemcpy_bad_done
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.Lmemcpy_bad2_loop16:
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#ifdef __ARMEB__
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mov r4, ip, lsl #16
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#else
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mov r4, ip, lsr #16
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#endif
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ldr r5, [r1], #0x04
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pld [r1, #0x018]
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ldr r6, [r1], #0x04
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ldr r7, [r1], #0x04
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ldr ip, [r1], #0x04
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#ifdef __ARMEB__
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orr r4, r4, r5, lsr #16
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mov r5, r5, lsl #16
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orr r5, r5, r6, lsr #16
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mov r6, r6, lsl #16
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orr r6, r6, r7, lsr #16
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mov r7, r7, lsl #16
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orr r7, r7, ip, lsr #16
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#else
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orr r4, r4, r5, lsl #16
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mov r5, r5, lsr #16
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orr r5, r5, r6, lsl #16
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mov r6, r6, lsr #16
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orr r6, r6, r7, lsl #16
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mov r7, r7, lsr #16
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orr r7, r7, ip, lsl #16
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#endif
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str r4, [r3], #0x04
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str r5, [r3], #0x04
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str r6, [r3], #0x04
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str r7, [r3], #0x04
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.Lmemcpy_bad2:
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subs r2, r2, #0x10
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bge .Lmemcpy_bad2_loop16
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adds r2, r2, #0x10
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ldmeqfd sp!, {r4-r7}
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bxeq lr /* Return now if done */
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subs r2, r2, #0x04
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sublt r1, r1, #0x02
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blt .Lmemcpy_bad_done
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.Lmemcpy_bad2_loop4:
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#ifdef __ARMEB__
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mov r4, ip, lsl #16
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#else
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mov r4, ip, lsr #16
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#endif
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ldr ip, [r1], #0x04
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subs r2, r2, #0x04
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#ifdef __ARMEB__
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orr r4, r4, ip, lsr #16
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#else
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orr r4, r4, ip, lsl #16
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#endif
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str r4, [r3], #0x04
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bge .Lmemcpy_bad2_loop4
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sub r1, r1, #0x02
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b .Lmemcpy_bad_done
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.Lmemcpy_bad3_loop16:
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#ifdef __ARMEB__
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mov r4, ip, lsl #24
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#else
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mov r4, ip, lsr #24
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#endif
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ldr r5, [r1], #0x04
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pld [r1, #0x018]
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ldr r6, [r1], #0x04
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ldr r7, [r1], #0x04
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ldr ip, [r1], #0x04
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#ifdef __ARMEB__
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orr r4, r4, r5, lsr #8
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mov r5, r5, lsl #24
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orr r5, r5, r6, lsr #8
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mov r6, r6, lsl #24
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orr r6, r6, r7, lsr #8
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mov r7, r7, lsl #24
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orr r7, r7, ip, lsr #8
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#else
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orr r4, r4, r5, lsl #8
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mov r5, r5, lsr #24
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orr r5, r5, r6, lsl #8
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mov r6, r6, lsr #24
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orr r6, r6, r7, lsl #8
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mov r7, r7, lsr #24
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orr r7, r7, ip, lsl #8
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#endif
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str r4, [r3], #0x04
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str r5, [r3], #0x04
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str r6, [r3], #0x04
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str r7, [r3], #0x04
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.Lmemcpy_bad3:
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subs r2, r2, #0x10
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bge .Lmemcpy_bad3_loop16
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adds r2, r2, #0x10
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ldmeqfd sp!, {r4-r7}
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bxeq lr /* Return now if done */
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subs r2, r2, #0x04
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sublt r1, r1, #0x01
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blt .Lmemcpy_bad_done
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.Lmemcpy_bad3_loop4:
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#ifdef __ARMEB__
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mov r4, ip, lsl #24
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#else
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mov r4, ip, lsr #24
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#endif
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ldr ip, [r1], #0x04
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subs r2, r2, #0x04
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#ifdef __ARMEB__
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orr r4, r4, ip, lsr #8
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#else
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orr r4, r4, ip, lsl #8
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#endif
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str r4, [r3], #0x04
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bge .Lmemcpy_bad3_loop4
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sub r1, r1, #0x01
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.Lmemcpy_bad_done:
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ldmfd sp!, {r4-r7}
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adds r2, r2, #0x04
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bxeq lr
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ldrb ip, [r1], #0x01
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cmp r2, #0x02
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ldrgeb r2, [r1], #0x01
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strb ip, [r3], #0x01
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ldrgtb ip, [r1]
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strgeb r2, [r3], #0x01
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strgtb ip, [r3]
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bx lr
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/*
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* Handle short copies (less than 16 bytes), possibly misaligned.
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* Some of these are *very* common, thanks to the network stack,
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* and so are handled specially.
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*/
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.Lmemcpy_short:
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#ifndef _STANDALONE
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add pc, pc, r2, lsl #2
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nop
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bx lr /* 0x00 */
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b .Lmemcpy_bytewise /* 0x01 */
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b .Lmemcpy_bytewise /* 0x02 */
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b .Lmemcpy_bytewise /* 0x03 */
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b .Lmemcpy_4 /* 0x04 */
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b .Lmemcpy_bytewise /* 0x05 */
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b .Lmemcpy_6 /* 0x06 */
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b .Lmemcpy_bytewise /* 0x07 */
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b .Lmemcpy_8 /* 0x08 */
|
|
b .Lmemcpy_bytewise /* 0x09 */
|
|
b .Lmemcpy_bytewise /* 0x0a */
|
|
b .Lmemcpy_bytewise /* 0x0b */
|
|
b .Lmemcpy_c /* 0x0c */
|
|
#endif
|
|
.Lmemcpy_bytewise:
|
|
mov r3, r0 /* We must not clobber r0 */
|
|
ldrb ip, [r1], #0x01
|
|
1: subs r2, r2, #0x01
|
|
strb ip, [r3], #0x01
|
|
ldrneb ip, [r1], #0x01
|
|
bne 1b
|
|
bx lr
|
|
|
|
#ifndef _STANDALONE
|
|
/******************************************************************************
|
|
* Special case for 4 byte copies
|
|
*/
|
|
#define LMEMCPY_4_LOG2 6 /* 64 bytes */
|
|
#define LMEMCPY_4_PAD .align LMEMCPY_4_LOG2
|
|
LMEMCPY_4_PAD
|
|
.Lmemcpy_4:
|
|
and r2, r1, #0x03
|
|
orr r2, r2, r0, lsl #2
|
|
ands r2, r2, #0x0f
|
|
sub r3, pc, #0x14
|
|
addne pc, r3, r2, lsl #LMEMCPY_4_LOG2
|
|
|
|
/*
|
|
* 0000: dst is 32-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1]
|
|
str r2, [r0]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0001: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r3, [r1, #-1] /* BE:r3 = x012 LE:r3 = 210x */
|
|
ldr r2, [r1, #3] /* BE:r2 = 3xxx LE:r2 = xxx3 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsl #8 /* r3 = 012. */
|
|
orr r3, r3, r2, lsr #24 /* r3 = 0123 */
|
|
#else
|
|
mov r3, r3, lsr #8 /* r3 = .210 */
|
|
orr r3, r3, r2, lsl #24 /* r3 = 3210 */
|
|
#endif
|
|
str r3, [r0]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0010: dst is 32-bit aligned, src is 16-bit aligned
|
|
*/
|
|
#ifdef __ARMEB__
|
|
ldrh r3, [r1]
|
|
ldrh r2, [r1, #0x02]
|
|
#else
|
|
ldrh r3, [r1, #0x02]
|
|
ldrh r2, [r1]
|
|
#endif
|
|
orr r3, r2, r3, lsl #16
|
|
str r3, [r0]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0011: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r3, [r1, #-3] /* BE:r3 = xxx0 LE:r3 = 0xxx */
|
|
ldr r2, [r1, #1] /* BE:r2 = 123x LE:r2 = x321 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsl #24 /* r3 = 0... */
|
|
orr r3, r3, r2, lsr #8 /* r3 = 0123 */
|
|
#else
|
|
mov r3, r3, lsr #24 /* r3 = ...0 */
|
|
orr r3, r3, r2, lsl #8 /* r3 = 3210 */
|
|
#endif
|
|
str r3, [r0]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0100: dst is 8-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1]
|
|
#ifdef __ARMEB__
|
|
strb r2, [r0, #0x03]
|
|
mov r3, r2, lsr #8
|
|
mov r1, r2, lsr #24
|
|
strb r1, [r0]
|
|
#else
|
|
strb r2, [r0]
|
|
mov r3, r2, lsr #8
|
|
mov r1, r2, lsr #24
|
|
strb r1, [r0, #0x03]
|
|
#endif
|
|
strh r3, [r0, #0x01]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0101: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrb r1, [r1, #0x03]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strb r1, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0110: dst is 8-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldrh r3, [r1, #0x02] /* LE:r3 = ..23 LE:r3 = ..32 */
|
|
#ifdef __ARMEB__
|
|
mov r1, r2, lsr #8 /* r1 = ...0 */
|
|
strb r1, [r0]
|
|
mov r2, r2, lsl #8 /* r2 = .01. */
|
|
orr r2, r2, r3, lsr #8 /* r2 = .012 */
|
|
#else
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #8 /* r2 = ...1 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = .321 */
|
|
mov r3, r3, lsr #8 /* r3 = ...3 */
|
|
#endif
|
|
strh r2, [r0, #0x01]
|
|
strb r3, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 0111: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrb r1, [r1, #0x03]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strb r1, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1000: dst is 16-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1]
|
|
#ifdef __ARMEB__
|
|
strh r2, [r0, #0x02]
|
|
mov r3, r2, lsr #16
|
|
strh r3, [r0]
|
|
#else
|
|
strh r2, [r0]
|
|
mov r3, r2, lsr #16
|
|
strh r3, [r0, #0x02]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1001: dst is 16-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r2, [r1, #-1] /* BE:r2 = x012 LE:r2 = 210x */
|
|
ldr r3, [r1, #3] /* BE:r3 = 3xxx LE:r3 = xxx3 */
|
|
mov r1, r2, lsr #8 /* BE:r1 = .x01 LE:r1 = .210 */
|
|
strh r1, [r0]
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #8 /* r2 = 012. */
|
|
orr r2, r2, r3, lsr #24 /* r2 = 0123 */
|
|
#else
|
|
mov r2, r2, lsr #24 /* r2 = ...2 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = xx32 */
|
|
#endif
|
|
strh r2, [r0, #0x02]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1010: dst is 16-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1]
|
|
ldrh r3, [r1, #0x02]
|
|
strh r2, [r0]
|
|
strh r3, [r0, #0x02]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1011: dst is 16-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r3, [r1, #1] /* BE:r3 = 123x LE:r3 = x321 */
|
|
ldr r2, [r1, #-3] /* BE:r2 = xxx0 LE:r2 = 0xxx */
|
|
mov r1, r3, lsr #8 /* BE:r1 = .123 LE:r1 = .x32 */
|
|
strh r1, [r0, #0x02]
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsr #24 /* r3 = ...1 */
|
|
orr r3, r3, r2, lsl #8 /* r3 = xx01 */
|
|
#else
|
|
mov r3, r3, lsl #8 /* r3 = 321. */
|
|
orr r3, r3, r2, lsr #24 /* r3 = 3210 */
|
|
#endif
|
|
strh r3, [r0]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1100: dst is 8-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1] /* BE:r2 = 0123 LE:r2 = 3210 */
|
|
#ifdef __ARMEB__
|
|
strb r2, [r0, #0x03]
|
|
mov r3, r2, lsr #8
|
|
mov r1, r2, lsr #24
|
|
strh r3, [r0, #0x01]
|
|
strb r1, [r0]
|
|
#else
|
|
strb r2, [r0]
|
|
mov r3, r2, lsr #8
|
|
mov r1, r2, lsr #24
|
|
strh r3, [r0, #0x01]
|
|
strb r1, [r0, #0x03]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1101: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrb r1, [r1, #0x03]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strb r1, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1110: dst is 8-bit aligned, src is 16-bit aligned
|
|
*/
|
|
#ifdef __ARMEB__
|
|
ldrh r3, [r1, #0x02] /* BE:r3 = ..23 LE:r3 = ..32 */
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
strb r3, [r0, #0x03]
|
|
mov r3, r3, lsr #8 /* r3 = ...2 */
|
|
orr r3, r3, r2, lsl #8 /* r3 = ..12 */
|
|
strh r3, [r0, #0x01]
|
|
mov r2, r2, lsr #8 /* r2 = ...0 */
|
|
strb r2, [r0]
|
|
#else
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldrh r3, [r1, #0x02] /* BE:r3 = ..23 LE:r3 = ..32 */
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #8 /* r2 = ...1 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = .321 */
|
|
strh r2, [r0, #0x01]
|
|
mov r3, r3, lsr #8 /* r3 = ...3 */
|
|
strb r3, [r0, #0x03]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
/*
|
|
* 1111: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrb r1, [r1, #0x03]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strb r1, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_4_PAD
|
|
|
|
|
|
/******************************************************************************
|
|
* Special case for 6 byte copies
|
|
*/
|
|
#define LMEMCPY_6_LOG2 6 /* 64 bytes */
|
|
#define LMEMCPY_6_PAD .align LMEMCPY_6_LOG2
|
|
LMEMCPY_6_PAD
|
|
.Lmemcpy_6:
|
|
and r2, r1, #0x03
|
|
orr r2, r2, r0, lsl #2
|
|
ands r2, r2, #0x0f
|
|
sub r3, pc, #0x14
|
|
addne pc, r3, r2, lsl #LMEMCPY_6_LOG2
|
|
|
|
/*
|
|
* 0000: dst is 32-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1]
|
|
ldrh r3, [r1, #0x04]
|
|
str r2, [r0]
|
|
strh r3, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0001: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r2, [r1, #-1] /* BE:r2 = x012 LE:r2 = 210x */
|
|
ldr r3, [r1, #0x03] /* BE:r3 = 345x LE:r3 = x543 */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #8 /* r2 = 012. */
|
|
orr r2, r2, r3, lsr #24 /* r2 = 0123 */
|
|
#else
|
|
mov r2, r2, lsr #8 /* r2 = .210 */
|
|
orr r2, r2, r3, lsl #24 /* r2 = 3210 */
|
|
#endif
|
|
mov r3, r3, lsr #8 /* BE:r3 = .345 LE:r3 = .x54 */
|
|
str r2, [r0]
|
|
strh r3, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0010: dst is 32-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldr r3, [r1, #0x02] /* BE:r3 = 2345 LE:r3 = 5432 */
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
#ifdef __ARMEB__
|
|
mov r1, r3, lsr #16 /* r1 = ..23 */
|
|
orr r1, r1, r2, lsl #16 /* r1 = 0123 */
|
|
str r1, [r0]
|
|
strh r3, [r0, #0x04]
|
|
#else
|
|
mov r1, r3, lsr #16 /* r1 = ..54 */
|
|
orr r2, r2, r3, lsl #16 /* r2 = 3210 */
|
|
str r2, [r0]
|
|
strh r1, [r0, #0x04]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0011: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r2, [r1, #-3] /* BE:r2 = xxx0 LE:r2 = 0xxx */
|
|
ldr r3, [r1, #1] /* BE:r3 = 1234 LE:r3 = 4321 */
|
|
ldr r1, [r1, #5] /* BE:r1 = 5xxx LE:r3 = xxx5 */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #24 /* r2 = 0... */
|
|
orr r2, r2, r3, lsr #8 /* r2 = 0123 */
|
|
mov r3, r3, lsl #8 /* r3 = 234. */
|
|
orr r1, r3, r1, lsr #24 /* r1 = 2345 */
|
|
#else
|
|
mov r2, r2, lsr #24 /* r2 = ...0 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = 3210 */
|
|
mov r1, r1, lsl #8 /* r1 = xx5. */
|
|
orr r1, r1, r3, lsr #24 /* r1 = xx54 */
|
|
#endif
|
|
str r2, [r0]
|
|
strh r1, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0100: dst is 8-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r3, [r1] /* BE:r3 = 0123 LE:r3 = 3210 */
|
|
ldrh r2, [r1, #0x04] /* BE:r2 = ..45 LE:r2 = ..54 */
|
|
mov r1, r3, lsr #8 /* BE:r1 = .012 LE:r1 = .321 */
|
|
strh r1, [r0, #0x01]
|
|
#ifdef __ARMEB__
|
|
mov r1, r3, lsr #24 /* r1 = ...0 */
|
|
strb r1, [r0]
|
|
mov r3, r3, lsl #8 /* r3 = 123. */
|
|
orr r3, r3, r2, lsr #8 /* r3 = 1234 */
|
|
#else
|
|
strb r3, [r0]
|
|
mov r3, r3, lsr #24 /* r3 = ...3 */
|
|
orr r3, r3, r2, lsl #8 /* r3 = .543 */
|
|
mov r2, r2, lsr #8 /* r2 = ...5 */
|
|
#endif
|
|
strh r3, [r0, #0x03]
|
|
strb r2, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0101: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrh ip, [r1, #0x03]
|
|
ldrb r1, [r1, #0x05]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strh ip, [r0, #0x03]
|
|
strb r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0110: dst is 8-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r1, [r1, #0x02] /* BE:r1 = 2345 LE:r1 = 5432 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r2, lsr #8 /* r3 = ...0 */
|
|
strb r3, [r0]
|
|
strb r1, [r0, #0x05]
|
|
mov r3, r1, lsr #8 /* r3 = .234 */
|
|
strh r3, [r0, #0x03]
|
|
mov r3, r2, lsl #8 /* r3 = .01. */
|
|
orr r3, r3, r1, lsr #24 /* r3 = .012 */
|
|
strh r3, [r0, #0x01]
|
|
#else
|
|
strb r2, [r0]
|
|
mov r3, r1, lsr #24
|
|
strb r3, [r0, #0x05]
|
|
mov r3, r1, lsr #8 /* r3 = .543 */
|
|
strh r3, [r0, #0x03]
|
|
mov r3, r2, lsr #8 /* r3 = ...1 */
|
|
orr r3, r3, r1, lsl #8 /* r3 = 4321 */
|
|
strh r3, [r0, #0x01]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 0111: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrh ip, [r1, #0x03]
|
|
ldrb r1, [r1, #0x05]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strh ip, [r0, #0x03]
|
|
strb r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1000: dst is 16-bit aligned, src is 32-bit aligned
|
|
*/
|
|
#ifdef __ARMEB__
|
|
ldr r2, [r1] /* r2 = 0123 */
|
|
ldrh r3, [r1, #0x04] /* r3 = ..45 */
|
|
mov r1, r2, lsr #16 /* r1 = ..01 */
|
|
orr r3, r3, r2, lsl#16 /* r3 = 2345 */
|
|
strh r1, [r0]
|
|
str r3, [r0, #0x02]
|
|
#else
|
|
ldrh r2, [r1, #0x04] /* r2 = ..54 */
|
|
ldr r3, [r1] /* r3 = 3210 */
|
|
mov r2, r2, lsl #16 /* r2 = 54.. */
|
|
orr r2, r2, r3, lsr #16 /* r2 = 5432 */
|
|
strh r3, [r0]
|
|
str r2, [r0, #0x02]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1001: dst is 16-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r3, [r1, #-1] /* BE:r3 = x012 LE:r3 = 210x */
|
|
ldr r2, [r1, #3] /* BE:r2 = 345x LE:r2 = x543 */
|
|
mov r1, r3, lsr #8 /* BE:r1 = .x01 LE:r1 = .210 */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsr #8 /* r2 = .345 */
|
|
orr r2, r2, r3, lsl #24 /* r2 = 2345 */
|
|
#else
|
|
mov r2, r2, lsl #8 /* r2 = 543. */
|
|
orr r2, r2, r3, lsr #24 /* r2 = 5432 */
|
|
#endif
|
|
strh r1, [r0]
|
|
str r2, [r0, #0x02]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1010: dst is 16-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1]
|
|
ldr r3, [r1, #0x02]
|
|
strh r2, [r0]
|
|
str r3, [r0, #0x02]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1011: dst is 16-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r3, [r1] /* r3 = ...0 */
|
|
ldr r2, [r1, #0x01] /* BE:r2 = 1234 LE:r2 = 4321 */
|
|
ldrb r1, [r1, #0x05] /* r1 = ...5 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsl #8 /* r3 = ..0. */
|
|
orr r3, r3, r2, lsr #24 /* r3 = ..01 */
|
|
orr r1, r1, r2, lsl #8 /* r1 = 2345 */
|
|
#else
|
|
orr r3, r3, r2, lsl #8 /* r3 = 3210 */
|
|
mov r1, r1, lsl #24 /* r1 = 5... */
|
|
orr r1, r1, r2, lsr #8 /* r1 = 5432 */
|
|
#endif
|
|
strh r3, [r0]
|
|
str r1, [r0, #0x02]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1100: dst is 8-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1] /* BE:r2 = 0123 LE:r2 = 3210 */
|
|
ldrh r1, [r1, #0x04] /* BE:r1 = ..45 LE:r1 = ..54 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r2, lsr #24 /* r3 = ...0 */
|
|
strb r3, [r0]
|
|
mov r2, r2, lsl #8 /* r2 = 123. */
|
|
orr r2, r2, r1, lsr #8 /* r2 = 1234 */
|
|
#else
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #8 /* r2 = .321 */
|
|
orr r2, r2, r1, lsl #24 /* r2 = 4321 */
|
|
mov r1, r1, lsr #8 /* r1 = ...5 */
|
|
#endif
|
|
str r2, [r0, #0x01]
|
|
strb r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1101: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldrh ip, [r1, #0x03]
|
|
ldrb r1, [r1, #0x05]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
strh ip, [r0, #0x03]
|
|
strb r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1110: dst is 8-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r1, [r1, #0x02] /* BE:r1 = 2345 LE:r1 = 5432 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r2, lsr #8 /* r3 = ...0 */
|
|
strb r3, [r0]
|
|
mov r2, r2, lsl #24 /* r2 = 1... */
|
|
orr r2, r2, r1, lsr #8 /* r2 = 1234 */
|
|
#else
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #8 /* r2 = ...1 */
|
|
orr r2, r2, r1, lsl #8 /* r2 = 4321 */
|
|
mov r1, r1, lsr #24 /* r1 = ...5 */
|
|
#endif
|
|
str r2, [r0, #0x01]
|
|
strb r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
/*
|
|
* 1111: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldr r3, [r1, #0x01]
|
|
ldrb r1, [r1, #0x05]
|
|
strb r2, [r0]
|
|
str r3, [r0, #0x01]
|
|
strb r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_6_PAD
|
|
|
|
|
|
/******************************************************************************
|
|
* Special case for 8 byte copies
|
|
*/
|
|
#define LMEMCPY_8_LOG2 6 /* 64 bytes */
|
|
#define LMEMCPY_8_PAD .align LMEMCPY_8_LOG2
|
|
LMEMCPY_8_PAD
|
|
.Lmemcpy_8:
|
|
and r2, r1, #0x03
|
|
orr r2, r2, r0, lsl #2
|
|
ands r2, r2, #0x0f
|
|
sub r3, pc, #0x14
|
|
addne pc, r3, r2, lsl #LMEMCPY_8_LOG2
|
|
|
|
/*
|
|
* 0000: dst is 32-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1]
|
|
ldr r3, [r1, #0x04]
|
|
str r2, [r0]
|
|
str r3, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0001: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r3, [r1, #-1] /* BE:r3 = x012 LE:r3 = 210x */
|
|
ldr r2, [r1, #0x03] /* BE:r2 = 3456 LE:r2 = 6543 */
|
|
ldrb r1, [r1, #0x07] /* r1 = ...7 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsl #8 /* r3 = 012. */
|
|
orr r3, r3, r2, lsr #24 /* r3 = 0123 */
|
|
orr r2, r1, r2, lsl #8 /* r2 = 4567 */
|
|
#else
|
|
mov r3, r3, lsr #8 /* r3 = .210 */
|
|
orr r3, r3, r2, lsl #24 /* r3 = 3210 */
|
|
mov r1, r1, lsl #24 /* r1 = 7... */
|
|
orr r2, r1, r2, lsr #8 /* r2 = 7654 */
|
|
#endif
|
|
str r3, [r0]
|
|
str r2, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0010: dst is 32-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r3, [r1, #0x02] /* BE:r3 = 2345 LE:r3 = 5432 */
|
|
ldrh r1, [r1, #0x06] /* BE:r1 = ..67 LE:r1 = ..76 */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #16 /* r2 = 01.. */
|
|
orr r2, r2, r3, lsr #16 /* r2 = 0123 */
|
|
orr r3, r1, r3, lsl #16 /* r3 = 4567 */
|
|
#else
|
|
orr r2, r2, r3, lsl #16 /* r2 = 3210 */
|
|
mov r3, r3, lsr #16 /* r3 = ..54 */
|
|
orr r3, r3, r1, lsl #16 /* r3 = 7654 */
|
|
#endif
|
|
str r2, [r0]
|
|
str r3, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0011: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r3, [r1] /* r3 = ...0 */
|
|
ldr r2, [r1, #0x01] /* BE:r2 = 1234 LE:r2 = 4321 */
|
|
ldr r1, [r1, #0x05] /* BE:r1 = 567x LE:r1 = x765 */
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsl #24 /* r3 = 0... */
|
|
orr r3, r3, r2, lsr #8 /* r3 = 0123 */
|
|
mov r2, r2, lsl #24 /* r2 = 4... */
|
|
orr r2, r2, r1, lsr #8 /* r2 = 4567 */
|
|
#else
|
|
orr r3, r3, r2, lsl #8 /* r3 = 3210 */
|
|
mov r2, r2, lsr #24 /* r2 = ...4 */
|
|
orr r2, r2, r1, lsl #8 /* r2 = 7654 */
|
|
#endif
|
|
str r3, [r0]
|
|
str r2, [r0, #0x04]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0100: dst is 8-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r3, [r1] /* BE:r3 = 0123 LE:r3 = 3210 */
|
|
ldr r2, [r1, #0x04] /* BE:r2 = 4567 LE:r2 = 7654 */
|
|
#ifdef __ARMEB__
|
|
mov r1, r3, lsr #24 /* r1 = ...0 */
|
|
strb r1, [r0]
|
|
mov r1, r3, lsr #8 /* r1 = .012 */
|
|
strb r2, [r0, #0x07]
|
|
mov r3, r3, lsl #24 /* r3 = 3... */
|
|
orr r3, r3, r2, lsr #8 /* r3 = 3456 */
|
|
#else
|
|
strb r3, [r0]
|
|
mov r1, r2, lsr #24 /* r1 = ...7 */
|
|
strb r1, [r0, #0x07]
|
|
mov r1, r3, lsr #8 /* r1 = .321 */
|
|
mov r3, r3, lsr #24 /* r3 = ...3 */
|
|
orr r3, r3, r2, lsl #8 /* r3 = 6543 */
|
|
#endif
|
|
strh r1, [r0, #0x01]
|
|
str r3, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0101: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldr ip, [r1, #0x03]
|
|
ldrb r1, [r1, #0x07]
|
|
strb r2, [r0]
|
|
strh r3, [r0, #0x01]
|
|
str ip, [r0, #0x03]
|
|
strb r1, [r0, #0x07]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0110: dst is 8-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r3, [r1, #0x02] /* BE:r3 = 2345 LE:r3 = 5432 */
|
|
ldrh r1, [r1, #0x06] /* BE:r1 = ..67 LE:r1 = ..76 */
|
|
#ifdef __ARMEB__
|
|
mov ip, r2, lsr #8 /* ip = ...0 */
|
|
strb ip, [r0]
|
|
mov ip, r2, lsl #8 /* ip = .01. */
|
|
orr ip, ip, r3, lsr #24 /* ip = .012 */
|
|
strb r1, [r0, #0x07]
|
|
mov r3, r3, lsl #8 /* r3 = 345. */
|
|
orr r3, r3, r1, lsr #8 /* r3 = 3456 */
|
|
#else
|
|
strb r2, [r0] /* 0 */
|
|
mov ip, r1, lsr #8 /* ip = ...7 */
|
|
strb ip, [r0, #0x07] /* 7 */
|
|
mov ip, r2, lsr #8 /* ip = ...1 */
|
|
orr ip, ip, r3, lsl #8 /* ip = 4321 */
|
|
mov r3, r3, lsr #8 /* r3 = .543 */
|
|
orr r3, r3, r1, lsl #24 /* r3 = 6543 */
|
|
#endif
|
|
strh ip, [r0, #0x01]
|
|
str r3, [r0, #0x03]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 0111: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r3, [r1] /* r3 = ...0 */
|
|
ldr ip, [r1, #0x01] /* BE:ip = 1234 LE:ip = 4321 */
|
|
ldrh r2, [r1, #0x05] /* BE:r2 = ..56 LE:r2 = ..65 */
|
|
ldrb r1, [r1, #0x07] /* r1 = ...7 */
|
|
strb r3, [r0]
|
|
mov r3, ip, lsr #16 /* BE:r3 = ..12 LE:r3 = ..43 */
|
|
#ifdef __ARMEB__
|
|
strh r3, [r0, #0x01]
|
|
orr r2, r2, ip, lsl #16 /* r2 = 3456 */
|
|
#else
|
|
strh ip, [r0, #0x01]
|
|
orr r2, r3, r2, lsl #16 /* r2 = 6543 */
|
|
#endif
|
|
str r2, [r0, #0x03]
|
|
strb r1, [r0, #0x07]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1000: dst is 16-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1] /* BE:r2 = 0123 LE:r2 = 3210 */
|
|
ldr r3, [r1, #0x04] /* BE:r3 = 4567 LE:r3 = 7654 */
|
|
mov r1, r2, lsr #16 /* BE:r1 = ..01 LE:r1 = ..32 */
|
|
#ifdef __ARMEB__
|
|
strh r1, [r0]
|
|
mov r1, r3, lsr #16 /* r1 = ..45 */
|
|
orr r2, r1 ,r2, lsl #16 /* r2 = 2345 */
|
|
#else
|
|
strh r2, [r0]
|
|
orr r2, r1, r3, lsl #16 /* r2 = 5432 */
|
|
mov r3, r3, lsr #16 /* r3 = ..76 */
|
|
#endif
|
|
str r2, [r0, #0x02]
|
|
strh r3, [r0, #0x06]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1001: dst is 16-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r2, [r1, #-1] /* BE:r2 = x012 LE:r2 = 210x */
|
|
ldr r3, [r1, #0x03] /* BE:r3 = 3456 LE:r3 = 6543 */
|
|
ldrb ip, [r1, #0x07] /* ip = ...7 */
|
|
mov r1, r2, lsr #8 /* BE:r1 = .x01 LE:r1 = .210 */
|
|
strh r1, [r0]
|
|
#ifdef __ARMEB__
|
|
mov r1, r2, lsl #24 /* r1 = 2... */
|
|
orr r1, r1, r3, lsr #8 /* r1 = 2345 */
|
|
orr r3, ip, r3, lsl #8 /* r3 = 4567 */
|
|
#else
|
|
mov r1, r2, lsr #24 /* r1 = ...2 */
|
|
orr r1, r1, r3, lsl #8 /* r1 = 5432 */
|
|
mov r3, r3, lsr #24 /* r3 = ...6 */
|
|
orr r3, r3, ip, lsl #8 /* r3 = ..76 */
|
|
#endif
|
|
str r1, [r0, #0x02]
|
|
strh r3, [r0, #0x06]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1010: dst is 16-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1]
|
|
ldr ip, [r1, #0x02]
|
|
ldrh r3, [r1, #0x06]
|
|
strh r2, [r0]
|
|
str ip, [r0, #0x02]
|
|
strh r3, [r0, #0x06]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1011: dst is 16-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldr r3, [r1, #0x05] /* BE:r3 = 567x LE:r3 = x765 */
|
|
ldr r2, [r1, #0x01] /* BE:r2 = 1234 LE:r2 = 4321 */
|
|
ldrb ip, [r1] /* ip = ...0 */
|
|
mov r1, r3, lsr #8 /* BE:r1 = .567 LE:r1 = .x76 */
|
|
strh r1, [r0, #0x06]
|
|
#ifdef __ARMEB__
|
|
mov r3, r3, lsr #24 /* r3 = ...5 */
|
|
orr r3, r3, r2, lsl #8 /* r3 = 2345 */
|
|
mov r2, r2, lsr #24 /* r2 = ...1 */
|
|
orr r2, r2, ip, lsl #8 /* r2 = ..01 */
|
|
#else
|
|
mov r3, r3, lsl #24 /* r3 = 5... */
|
|
orr r3, r3, r2, lsr #8 /* r3 = 5432 */
|
|
orr r2, ip, r2, lsl #8 /* r2 = 3210 */
|
|
#endif
|
|
str r3, [r0, #0x02]
|
|
strh r2, [r0]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1100: dst is 8-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r3, [r1, #0x04] /* BE:r3 = 4567 LE:r3 = 7654 */
|
|
ldr r2, [r1] /* BE:r2 = 0123 LE:r2 = 3210 */
|
|
mov r1, r3, lsr #8 /* BE:r1 = .456 LE:r1 = .765 */
|
|
strh r1, [r0, #0x05]
|
|
#ifdef __ARMEB__
|
|
strb r3, [r0, #0x07]
|
|
mov r1, r2, lsr #24 /* r1 = ...0 */
|
|
strb r1, [r0]
|
|
mov r2, r2, lsl #8 /* r2 = 123. */
|
|
orr r2, r2, r3, lsr #24 /* r2 = 1234 */
|
|
str r2, [r0, #0x01]
|
|
#else
|
|
strb r2, [r0]
|
|
mov r1, r3, lsr #24 /* r1 = ...7 */
|
|
strb r1, [r0, #0x07]
|
|
mov r2, r2, lsr #8 /* r2 = .321 */
|
|
orr r2, r2, r3, lsl #24 /* r2 = 4321 */
|
|
str r2, [r0, #0x01]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1101: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r3, [r1] /* r3 = ...0 */
|
|
ldrh r2, [r1, #0x01] /* BE:r2 = ..12 LE:r2 = ..21 */
|
|
ldr ip, [r1, #0x03] /* BE:ip = 3456 LE:ip = 6543 */
|
|
ldrb r1, [r1, #0x07] /* r1 = ...7 */
|
|
strb r3, [r0]
|
|
mov r3, ip, lsr #16 /* BE:r3 = ..34 LE:r3 = ..65 */
|
|
#ifdef __ARMEB__
|
|
strh ip, [r0, #0x05]
|
|
orr r2, r3, r2, lsl #16 /* r2 = 1234 */
|
|
#else
|
|
strh r3, [r0, #0x05]
|
|
orr r2, r2, ip, lsl #16 /* r2 = 4321 */
|
|
#endif
|
|
str r2, [r0, #0x01]
|
|
strb r1, [r0, #0x07]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1110: dst is 8-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r3, [r1, #0x02] /* BE:r3 = 2345 LE:r3 = 5432 */
|
|
ldrh r1, [r1, #0x06] /* BE:r1 = ..67 LE:r1 = ..76 */
|
|
#ifdef __ARMEB__
|
|
mov ip, r2, lsr #8 /* ip = ...0 */
|
|
strb ip, [r0]
|
|
mov ip, r2, lsl #24 /* ip = 1... */
|
|
orr ip, ip, r3, lsr #8 /* ip = 1234 */
|
|
strb r1, [r0, #0x07]
|
|
mov r1, r1, lsr #8 /* r1 = ...6 */
|
|
orr r1, r1, r3, lsl #8 /* r1 = 3456 */
|
|
#else
|
|
strb r2, [r0]
|
|
mov ip, r2, lsr #8 /* ip = ...1 */
|
|
orr ip, ip, r3, lsl #8 /* ip = 4321 */
|
|
mov r2, r1, lsr #8 /* r2 = ...7 */
|
|
strb r2, [r0, #0x07]
|
|
mov r1, r1, lsl #8 /* r1 = .76. */
|
|
orr r1, r1, r3, lsr #24 /* r1 = .765 */
|
|
#endif
|
|
str ip, [r0, #0x01]
|
|
strh r1, [r0, #0x05]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/*
|
|
* 1111: dst is 8-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldr ip, [r1, #0x01]
|
|
ldrh r3, [r1, #0x05]
|
|
ldrb r1, [r1, #0x07]
|
|
strb r2, [r0]
|
|
str ip, [r0, #0x01]
|
|
strh r3, [r0, #0x05]
|
|
strb r1, [r0, #0x07]
|
|
bx lr
|
|
LMEMCPY_8_PAD
|
|
|
|
/******************************************************************************
|
|
* Special case for 12 byte copies
|
|
*/
|
|
#define LMEMCPY_C_LOG2 7 /* 128 bytes */
|
|
#define LMEMCPY_C_PAD .align LMEMCPY_C_LOG2
|
|
LMEMCPY_C_PAD
|
|
.Lmemcpy_c:
|
|
and r2, r1, #0x03
|
|
orr r2, r2, r0, lsl #2
|
|
ands r2, r2, #0x0f
|
|
sub r3, pc, #0x14
|
|
addne pc, r3, r2, lsl #LMEMCPY_C_LOG2
|
|
|
|
/*
|
|
* 0000: dst is 32-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1]
|
|
ldr r3, [r1, #0x04]
|
|
ldr r1, [r1, #0x08]
|
|
str r2, [r0]
|
|
str r3, [r0, #0x04]
|
|
str r1, [r0, #0x08]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0001: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1, #0xb] /* r2 = ...B */
|
|
ldr ip, [r1, #0x07] /* BE:ip = 789A LE:ip = A987 */
|
|
ldr r3, [r1, #0x03] /* BE:r3 = 3456 LE:r3 = 6543 */
|
|
ldr r1, [r1, #-1] /* BE:r1 = x012 LE:r1 = 210x */
|
|
#ifdef __ARMEB__
|
|
orr r2, r2, ip, lsl #8 /* r2 = 89AB */
|
|
str r2, [r0, #0x08]
|
|
mov r2, ip, lsr #24 /* r2 = ...7 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = 4567 */
|
|
mov r1, r1, lsl #8 /* r1 = 012. */
|
|
orr r1, r1, r3, lsr #24 /* r1 = 0123 */
|
|
#else
|
|
mov r2, r2, lsl #24 /* r2 = B... */
|
|
orr r2, r2, ip, lsr #8 /* r2 = BA98 */
|
|
str r2, [r0, #0x08]
|
|
mov r2, ip, lsl #24 /* r2 = 7... */
|
|
orr r2, r2, r3, lsr #8 /* r2 = 7654 */
|
|
mov r1, r1, lsr #8 /* r1 = .210 */
|
|
orr r1, r1, r3, lsl #24 /* r1 = 3210 */
|
|
#endif
|
|
str r2, [r0, #0x04]
|
|
str r1, [r0]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0010: dst is 32-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r3, [r1, #0x02] /* BE:r3 = 2345 LE:r3 = 5432 */
|
|
ldr ip, [r1, #0x06] /* BE:ip = 6789 LE:ip = 9876 */
|
|
ldrh r1, [r1, #0x0a] /* BE:r1 = ..AB LE:r1 = ..BA */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #16 /* r2 = 01.. */
|
|
orr r2, r2, r3, lsr #16 /* r2 = 0123 */
|
|
str r2, [r0]
|
|
mov r3, r3, lsl #16 /* r3 = 45.. */
|
|
orr r3, r3, ip, lsr #16 /* r3 = 4567 */
|
|
orr r1, r1, ip, lsl #16 /* r1 = 89AB */
|
|
#else
|
|
orr r2, r2, r3, lsl #16 /* r2 = 3210 */
|
|
str r2, [r0]
|
|
mov r3, r3, lsr #16 /* r3 = ..54 */
|
|
orr r3, r3, ip, lsl #16 /* r3 = 7654 */
|
|
mov r1, r1, lsl #16 /* r1 = BA.. */
|
|
orr r1, r1, ip, lsr #16 /* r1 = BA98 */
|
|
#endif
|
|
str r3, [r0, #0x04]
|
|
str r1, [r0, #0x08]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0011: dst is 32-bit aligned, src is 8-bit aligned
|
|
*/
|
|
ldrb r2, [r1] /* r2 = ...0 */
|
|
ldr r3, [r1, #0x01] /* BE:r3 = 1234 LE:r3 = 4321 */
|
|
ldr ip, [r1, #0x05] /* BE:ip = 5678 LE:ip = 8765 */
|
|
ldr r1, [r1, #0x09] /* BE:r1 = 9ABx LE:r1 = xBA9 */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #24 /* r2 = 0... */
|
|
orr r2, r2, r3, lsr #8 /* r2 = 0123 */
|
|
str r2, [r0]
|
|
mov r3, r3, lsl #24 /* r3 = 4... */
|
|
orr r3, r3, ip, lsr #8 /* r3 = 4567 */
|
|
mov r1, r1, lsr #8 /* r1 = .9AB */
|
|
orr r1, r1, ip, lsl #24 /* r1 = 89AB */
|
|
#else
|
|
orr r2, r2, r3, lsl #8 /* r2 = 3210 */
|
|
str r2, [r0]
|
|
mov r3, r3, lsr #24 /* r3 = ...4 */
|
|
orr r3, r3, ip, lsl #8 /* r3 = 7654 */
|
|
mov r1, r1, lsl #8 /* r1 = BA9. */
|
|
orr r1, r1, ip, lsr #24 /* r1 = BA98 */
|
|
#endif
|
|
str r3, [r0, #0x04]
|
|
str r1, [r0, #0x08]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0100: dst is 8-bit aligned (byte 1), src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1] /* BE:r2 = 0123 LE:r2 = 3210 */
|
|
ldr r3, [r1, #0x04] /* BE:r3 = 4567 LE:r3 = 7654 */
|
|
ldr ip, [r1, #0x08] /* BE:ip = 89AB LE:ip = BA98 */
|
|
mov r1, r2, lsr #8 /* BE:r1 = .012 LE:r1 = .321 */
|
|
strh r1, [r0, #0x01]
|
|
#ifdef __ARMEB__
|
|
mov r1, r2, lsr #24 /* r1 = ...0 */
|
|
strb r1, [r0]
|
|
mov r1, r2, lsl #24 /* r1 = 3... */
|
|
orr r2, r1, r3, lsr #8 /* r1 = 3456 */
|
|
mov r1, r3, lsl #24 /* r1 = 7... */
|
|
orr r1, r1, ip, lsr #8 /* r1 = 789A */
|
|
#else
|
|
strb r2, [r0]
|
|
mov r1, r2, lsr #24 /* r1 = ...3 */
|
|
orr r2, r1, r3, lsl #8 /* r1 = 6543 */
|
|
mov r1, r3, lsr #24 /* r1 = ...7 */
|
|
orr r1, r1, ip, lsl #8 /* r1 = A987 */
|
|
mov ip, ip, lsr #24 /* ip = ...B */
|
|
#endif
|
|
str r2, [r0, #0x03]
|
|
str r1, [r0, #0x07]
|
|
strb ip, [r0, #0x0b]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0101: dst is 8-bit aligned (byte 1), src is 8-bit aligned (byte 1)
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldrh r3, [r1, #0x01]
|
|
ldr ip, [r1, #0x03]
|
|
strb r2, [r0]
|
|
ldr r2, [r1, #0x07]
|
|
ldrb r1, [r1, #0x0b]
|
|
strh r3, [r0, #0x01]
|
|
str ip, [r0, #0x03]
|
|
str r2, [r0, #0x07]
|
|
strb r1, [r0, #0x0b]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0110: dst is 8-bit aligned (byte 1), src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1] /* BE:r2 = ..01 LE:r2 = ..10 */
|
|
ldr r3, [r1, #0x02] /* BE:r3 = 2345 LE:r3 = 5432 */
|
|
ldr ip, [r1, #0x06] /* BE:ip = 6789 LE:ip = 9876 */
|
|
ldrh r1, [r1, #0x0a] /* BE:r1 = ..AB LE:r1 = ..BA */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, ror #8 /* r2 = 1..0 */
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #16 /* r2 = ..1. */
|
|
orr r2, r2, r3, lsr #24 /* r2 = ..12 */
|
|
strh r2, [r0, #0x01]
|
|
mov r2, r3, lsl #8 /* r2 = 345. */
|
|
orr r3, r2, ip, lsr #24 /* r3 = 3456 */
|
|
mov r2, ip, lsl #8 /* r2 = 789. */
|
|
orr r2, r2, r1, lsr #8 /* r2 = 789A */
|
|
#else
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #8 /* r2 = ...1 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = 4321 */
|
|
strh r2, [r0, #0x01]
|
|
mov r2, r3, lsr #8 /* r2 = .543 */
|
|
orr r3, r2, ip, lsl #24 /* r3 = 6543 */
|
|
mov r2, ip, lsr #8 /* r2 = .987 */
|
|
orr r2, r2, r1, lsl #24 /* r2 = A987 */
|
|
mov r1, r1, lsr #8 /* r1 = ...B */
|
|
#endif
|
|
str r3, [r0, #0x03]
|
|
str r2, [r0, #0x07]
|
|
strb r1, [r0, #0x0b]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 0111: dst is 8-bit aligned (byte 1), src is 8-bit aligned (byte 3)
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldr r3, [r1, #0x01] /* BE:r3 = 1234 LE:r3 = 4321 */
|
|
ldr ip, [r1, #0x05] /* BE:ip = 5678 LE:ip = 8765 */
|
|
ldr r1, [r1, #0x09] /* BE:r1 = 9ABx LE:r1 = xBA9 */
|
|
strb r2, [r0]
|
|
#ifdef __ARMEB__
|
|
mov r2, r3, lsr #16 /* r2 = ..12 */
|
|
strh r2, [r0, #0x01]
|
|
mov r3, r3, lsl #16 /* r3 = 34.. */
|
|
orr r3, r3, ip, lsr #16 /* r3 = 3456 */
|
|
mov ip, ip, lsl #16 /* ip = 78.. */
|
|
orr ip, ip, r1, lsr #16 /* ip = 789A */
|
|
mov r1, r1, lsr #8 /* r1 = .9AB */
|
|
#else
|
|
strh r3, [r0, #0x01]
|
|
mov r3, r3, lsr #16 /* r3 = ..43 */
|
|
orr r3, r3, ip, lsl #16 /* r3 = 6543 */
|
|
mov ip, ip, lsr #16 /* ip = ..87 */
|
|
orr ip, ip, r1, lsl #16 /* ip = A987 */
|
|
mov r1, r1, lsr #16 /* r1 = ..xB */
|
|
#endif
|
|
str r3, [r0, #0x03]
|
|
str ip, [r0, #0x07]
|
|
strb r1, [r0, #0x0b]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1000: dst is 16-bit aligned, src is 32-bit aligned
|
|
*/
|
|
ldr ip, [r1] /* BE:ip = 0123 LE:ip = 3210 */
|
|
ldr r3, [r1, #0x04] /* BE:r3 = 4567 LE:r3 = 7654 */
|
|
ldr r2, [r1, #0x08] /* BE:r2 = 89AB LE:r2 = BA98 */
|
|
mov r1, ip, lsr #16 /* BE:r1 = ..01 LE:r1 = ..32 */
|
|
#ifdef __ARMEB__
|
|
strh r1, [r0]
|
|
mov r1, ip, lsl #16 /* r1 = 23.. */
|
|
orr r1, r1, r3, lsr #16 /* r1 = 2345 */
|
|
mov r3, r3, lsl #16 /* r3 = 67.. */
|
|
orr r3, r3, r2, lsr #16 /* r3 = 6789 */
|
|
#else
|
|
strh ip, [r0]
|
|
orr r1, r1, r3, lsl #16 /* r1 = 5432 */
|
|
mov r3, r3, lsr #16 /* r3 = ..76 */
|
|
orr r3, r3, r2, lsl #16 /* r3 = 9876 */
|
|
mov r2, r2, lsr #16 /* r2 = ..BA */
|
|
#endif
|
|
str r1, [r0, #0x02]
|
|
str r3, [r0, #0x06]
|
|
strh r2, [r0, #0x0a]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1001: dst is 16-bit aligned, src is 8-bit aligned (byte 1)
|
|
*/
|
|
ldr r2, [r1, #-1] /* BE:r2 = x012 LE:r2 = 210x */
|
|
ldr r3, [r1, #0x03] /* BE:r3 = 3456 LE:r3 = 6543 */
|
|
mov ip, r2, lsr #8 /* BE:ip = .x01 LE:ip = .210 */
|
|
strh ip, [r0]
|
|
ldr ip, [r1, #0x07] /* BE:ip = 789A LE:ip = A987 */
|
|
ldrb r1, [r1, #0x0b] /* r1 = ...B */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsl #24 /* r2 = 2... */
|
|
orr r2, r2, r3, lsr #8 /* r2 = 2345 */
|
|
mov r3, r3, lsl #24 /* r3 = 6... */
|
|
orr r3, r3, ip, lsr #8 /* r3 = 6789 */
|
|
orr r1, r1, ip, lsl #8 /* r1 = 89AB */
|
|
#else
|
|
mov r2, r2, lsr #24 /* r2 = ...2 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = 5432 */
|
|
mov r3, r3, lsr #24 /* r3 = ...6 */
|
|
orr r3, r3, ip, lsl #8 /* r3 = 9876 */
|
|
mov r1, r1, lsl #8 /* r1 = ..B. */
|
|
orr r1, r1, ip, lsr #24 /* r1 = ..BA */
|
|
#endif
|
|
str r2, [r0, #0x02]
|
|
str r3, [r0, #0x06]
|
|
strh r1, [r0, #0x0a]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1010: dst is 16-bit aligned, src is 16-bit aligned
|
|
*/
|
|
ldrh r2, [r1]
|
|
ldr r3, [r1, #0x02]
|
|
ldr ip, [r1, #0x06]
|
|
ldrh r1, [r1, #0x0a]
|
|
strh r2, [r0]
|
|
str r3, [r0, #0x02]
|
|
str ip, [r0, #0x06]
|
|
strh r1, [r0, #0x0a]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1011: dst is 16-bit aligned, src is 8-bit aligned (byte 3)
|
|
*/
|
|
ldr r2, [r1, #0x09] /* BE:r2 = 9ABx LE:r2 = xBA9 */
|
|
ldr r3, [r1, #0x05] /* BE:r3 = 5678 LE:r3 = 8765 */
|
|
mov ip, r2, lsr #8 /* BE:ip = .9AB LE:ip = .xBA */
|
|
strh ip, [r0, #0x0a]
|
|
ldr ip, [r1, #0x01] /* BE:ip = 1234 LE:ip = 4321 */
|
|
ldrb r1, [r1] /* r1 = ...0 */
|
|
#ifdef __ARMEB__
|
|
mov r2, r2, lsr #24 /* r2 = ...9 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = 6789 */
|
|
mov r3, r3, lsr #24 /* r3 = ...5 */
|
|
orr r3, r3, ip, lsl #8 /* r3 = 2345 */
|
|
mov r1, r1, lsl #8 /* r1 = ..0. */
|
|
orr r1, r1, ip, lsr #24 /* r1 = ..01 */
|
|
#else
|
|
mov r2, r2, lsl #24 /* r2 = 9... */
|
|
orr r2, r2, r3, lsr #8 /* r2 = 9876 */
|
|
mov r3, r3, lsl #24 /* r3 = 5... */
|
|
orr r3, r3, ip, lsr #8 /* r3 = 5432 */
|
|
orr r1, r1, ip, lsl #8 /* r1 = 3210 */
|
|
#endif
|
|
str r2, [r0, #0x06]
|
|
str r3, [r0, #0x02]
|
|
strh r1, [r0]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1100: dst is 8-bit aligned (byte 3), src is 32-bit aligned
|
|
*/
|
|
ldr r2, [r1] /* BE:r2 = 0123 LE:r2 = 3210 */
|
|
ldr ip, [r1, #0x04] /* BE:ip = 4567 LE:ip = 7654 */
|
|
ldr r1, [r1, #0x08] /* BE:r1 = 89AB LE:r1 = BA98 */
|
|
#ifdef __ARMEB__
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mov r3, r2, lsr #24 /* r3 = ...0 */
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strb r3, [r0]
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|
mov r2, r2, lsl #8 /* r2 = 123. */
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orr r2, r2, ip, lsr #24 /* r2 = 1234 */
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|
str r2, [r0, #0x01]
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|
mov r2, ip, lsl #8 /* r2 = 567. */
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orr r2, r2, r1, lsr #24 /* r2 = 5678 */
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str r2, [r0, #0x05]
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mov r2, r1, lsr #8 /* r2 = ..9A */
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strh r2, [r0, #0x09]
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strb r1, [r0, #0x0b]
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#else
|
|
strb r2, [r0]
|
|
mov r3, r2, lsr #8 /* r3 = .321 */
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|
orr r3, r3, ip, lsl #24 /* r3 = 4321 */
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|
str r3, [r0, #0x01]
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|
mov r3, ip, lsr #8 /* r3 = .765 */
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orr r3, r3, r1, lsl #24 /* r3 = 8765 */
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|
str r3, [r0, #0x05]
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|
mov r1, r1, lsr #8 /* r1 = .BA9 */
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|
strh r1, [r0, #0x09]
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|
mov r1, r1, lsr #16 /* r1 = ...B */
|
|
strb r1, [r0, #0x0b]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1101: dst is 8-bit aligned (byte 3), src is 8-bit aligned (byte 1)
|
|
*/
|
|
ldrb r2, [r1, #0x0b] /* r2 = ...B */
|
|
ldr r3, [r1, #0x07] /* BE:r3 = 789A LE:r3 = A987 */
|
|
ldr ip, [r1, #0x03] /* BE:ip = 3456 LE:ip = 6543 */
|
|
ldr r1, [r1, #-1] /* BE:r1 = x012 LE:r1 = 210x */
|
|
strb r2, [r0, #0x0b]
|
|
#ifdef __ARMEB__
|
|
strh r3, [r0, #0x09]
|
|
mov r3, r3, lsr #16 /* r3 = ..78 */
|
|
orr r3, r3, ip, lsl #16 /* r3 = 5678 */
|
|
mov ip, ip, lsr #16 /* ip = ..34 */
|
|
orr ip, ip, r1, lsl #16 /* ip = 1234 */
|
|
mov r1, r1, lsr #16 /* r1 = ..x0 */
|
|
#else
|
|
mov r2, r3, lsr #16 /* r2 = ..A9 */
|
|
strh r2, [r0, #0x09]
|
|
mov r3, r3, lsl #16 /* r3 = 87.. */
|
|
orr r3, r3, ip, lsr #16 /* r3 = 8765 */
|
|
mov ip, ip, lsl #16 /* ip = 43.. */
|
|
orr ip, ip, r1, lsr #16 /* ip = 4321 */
|
|
mov r1, r1, lsr #8 /* r1 = .210 */
|
|
#endif
|
|
str r3, [r0, #0x05]
|
|
str ip, [r0, #0x01]
|
|
strb r1, [r0]
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1110: dst is 8-bit aligned (byte 3), src is 16-bit aligned
|
|
*/
|
|
#ifdef __ARMEB__
|
|
ldrh r2, [r1, #0x0a] /* r2 = ..AB */
|
|
ldr ip, [r1, #0x06] /* ip = 6789 */
|
|
ldr r3, [r1, #0x02] /* r3 = 2345 */
|
|
ldrh r1, [r1] /* r1 = ..01 */
|
|
strb r2, [r0, #0x0b]
|
|
mov r2, r2, lsr #8 /* r2 = ...A */
|
|
orr r2, r2, ip, lsl #8 /* r2 = 789A */
|
|
mov ip, ip, lsr #8 /* ip = .678 */
|
|
orr ip, ip, r3, lsl #24 /* ip = 5678 */
|
|
mov r3, r3, lsr #8 /* r3 = .234 */
|
|
orr r3, r3, r1, lsl #24 /* r3 = 1234 */
|
|
mov r1, r1, lsr #8 /* r1 = ...0 */
|
|
strb r1, [r0]
|
|
str r3, [r0, #0x01]
|
|
str ip, [r0, #0x05]
|
|
strh r2, [r0, #0x09]
|
|
#else
|
|
ldrh r2, [r1] /* r2 = ..10 */
|
|
ldr r3, [r1, #0x02] /* r3 = 5432 */
|
|
ldr ip, [r1, #0x06] /* ip = 9876 */
|
|
ldrh r1, [r1, #0x0a] /* r1 = ..BA */
|
|
strb r2, [r0]
|
|
mov r2, r2, lsr #8 /* r2 = ...1 */
|
|
orr r2, r2, r3, lsl #8 /* r2 = 4321 */
|
|
mov r3, r3, lsr #24 /* r3 = ...5 */
|
|
orr r3, r3, ip, lsl #8 /* r3 = 8765 */
|
|
mov ip, ip, lsr #24 /* ip = ...9 */
|
|
orr ip, ip, r1, lsl #8 /* ip = .BA9 */
|
|
mov r1, r1, lsr #8 /* r1 = ...B */
|
|
str r2, [r0, #0x01]
|
|
str r3, [r0, #0x05]
|
|
strh ip, [r0, #0x09]
|
|
strb r1, [r0, #0x0b]
|
|
#endif
|
|
bx lr
|
|
LMEMCPY_C_PAD
|
|
|
|
/*
|
|
* 1111: dst is 8-bit aligned (byte 3), src is 8-bit aligned (byte 3)
|
|
*/
|
|
ldrb r2, [r1]
|
|
ldr r3, [r1, #0x01]
|
|
ldr ip, [r1, #0x05]
|
|
strb r2, [r0]
|
|
ldrh r2, [r1, #0x09]
|
|
ldrb r1, [r1, #0x0b]
|
|
str r3, [r0, #0x01]
|
|
str ip, [r0, #0x05]
|
|
strh r2, [r0, #0x09]
|
|
strb r1, [r0, #0x0b]
|
|
bx lr
|
|
#endif /* !_STANDALONE */
|