/* * Copyright (c) 2015 ARM Ltd * 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. The name of the company may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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. */ .thumb .syntax unified .global __aeabi_memset .type __aeabi_memset, %function ASM_ALIAS __aeabi_memset4 __aeabi_memset ASM_ALIAS __aeabi_memset8 __aeabi_memset __aeabi_memset: .cfi_startproc push {r4, r5, r6, lr} lsls r3, r0, #30 beq .L14 subs r4, r1, #1 cmp r1, #0 beq .L16 uxtb r6, r2 movs r3, r0 movs r5, #3 b .L4 .L6: subs r1, r4, #1 cmp r4, #0 beq .L16 movs r4, r1 .L4: adds r3, r3, #1 subs r1, r3, #1 strb r6, [r1] tst r3, r5 bne .L6 .L2: cmp r4, #3 bls .L11 movs r5, #255 ands r5, r2 lsls r1, r5, #8 orrs r5, r1 lsls r1, r5, #16 orrs r5, r1 cmp r4, #15 bls .L9 movs r6, r4 subs r6, r6, #16 lsrs r6, r6, #4 adds r6, r6, #1 lsls r6, r6, #4 movs r1, r3 adds r3, r3, r6 .L10: str r5, [r1] str r5, [r1, #4] str r5, [r1, #8] str r5, [r1, #12] adds r1, r1, #16 cmp r3, r1 bne .L10 movs r1, #15 ands r4, r1 cmp r4, #3 bls .L11 .L9: subs r6, r4, #4 lsrs r6, r6, #2 adds r6, r6, #1 lsls r6, r6, #2 movs r1, r3 adds r3, r3, r6 .L12: stmia r1!, {r5} cmp r3, r1 bne .L12 movs r1, #3 ands r4, r1 .L11: cmp r4, #0 beq .L16 uxtb r2, r2 adds r4, r3, r4 .L13: strb r2, [r3] adds r3, r3, #1 cmp r4, r3 bne .L13 .L16: pop {r4, r5, r6, pc} .L14: movs r4, r1 movs r3, r0 b .L2 .cfi_endproc .size __aeabi_memset, . - __aeabi_memset