/* * 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. */ .arm .syntax divided .global __aeabi_memset .type __aeabi_memset, %function ASM_ALIAS __aeabi_memset4 __aeabi_memset ASM_ALIAS __aeabi_memset8 __aeabi_memset __aeabi_memset: .cfi_startproc tst r0, #3 stmfd sp!, {r4, r5, lr} beq .L14 cmp r1, #0 sub r1, r1, #1 ldmeqfd sp!, {r4, r5, pc} uxtb lr, r2 mov r3, r0 b .L4 .L6: cmp r1, #0 mov r1, ip ldmeqfd sp!, {r4, r5, pc} .L4: strb lr, [r3], #1 tst r3, #3 sub ip, r1, #1 bne .L6 .L2: cmp r1, #3 bls .L11 uxtb lr, r2 cmp r1, #15 orr lr, lr, lr, asl #8 orr lr, lr, lr, asl #16 bls .L15 sub r4, r1, #16 add ip, r3, #16 mov r4, r4, lsr #4 add r5, r4, #2 add r5, r3, r5, lsl #4 .L10: str lr, [ip, #-16] add ip, ip, #16 str lr, [ip, #-28] str lr, [ip, #-24] str lr, [ip, #-20] cmp ip, r5 bne .L10 and r1, r1, #15 add ip, r4, #1 cmp r1, #3 add ip, r3, ip, lsl #4 bls .L28 .L9: sub r3, r1, #4 bic r3, r3, #3 add r3, r3, #4 add r3, ip, r3 .L12: str lr, [ip], #4 cmp r3, ip bne .L12 and r1, r1, #3 .L11: cmp r1, #0 uxtbne r2, r2 addne r1, r3, r1 beq .L29 .L13: strb r2, [r3], #1 cmp r3, r1 bne .L13 ldmfd sp!, {r4, r5, pc} .L29: ldmfd sp!, {r4, r5, pc} .L14: mov r3, r0 b .L2 .L15: mov ip, r3 b .L9 .L28: mov r3, ip b .L11 .cfi_endproc .size __aeabi_memset, . - __aeabi_memset