| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 |
| * COPYRIGHT OWNER 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 <private/bionic_asm.h> |
| |
| #define PLDOFFS (16) |
| #define PLDSIZE (128) /* L2 cache line size */ |
| |
| .code 32 |
| ENTRY(__memcpy_kryo) |
| push {r0} |
| .cfi_def_cfa_offset 4 |
| .cfi_rel_offset r0, 0 |
| cmp r2, #4 |
| blt .Lneon_lt4 |
| cmp r2, #16 |
| blt .Lneon_lt16 |
| cmp r2, #32 |
| blt .Lneon_16 |
| cmp r2, #128 |
| blt .Lneon_copy_32_a |
| /* Copy blocks of 128-bytes (word-aligned) at a time*/ |
| /* Code below is optimized for PLDSIZE=128 only */ |
| mov r12, r2, lsr #7 |
| cmp r12, #PLDOFFS |
| ble .Lneon_copy_128_loop_nopld |
| sub r12, #PLDOFFS |
| pld [r1, #(PLDOFFS-1)*PLDSIZE] |
| .Lneon_copy_128_loop_outer: |
| pld [r1, #(PLDOFFS*PLDSIZE)] |
| pld [r1, #(PLDOFFS)*(PLDSIZE)+64] |
| vld1.32 {q0, q1}, [r1]! |
| vld1.32 {q2, q3}, [r1]! |
| vld1.32 {q8, q9}, [r1]! |
| vld1.32 {q10, q11}, [r1]! |
| subs r12, r12, #1 |
| vst1.32 {q0, q1}, [r0]! |
| vst1.32 {q2, q3}, [r0]! |
| vst1.32 {q8, q9}, [r0]! |
| vst1.32 {q10, q11}, [r0]! |
| bne .Lneon_copy_128_loop_outer |
| mov r12, #PLDOFFS |
| .Lneon_copy_128_loop_nopld: |
| vld1.32 {q0, q1}, [r1]! |
| vld1.32 {q2, q3}, [r1]! |
| vld1.32 {q8, q9}, [r1]! |
| vld1.32 {q10, q11}, [r1]! |
| subs r12, r12, #1 |
| vst1.32 {q0, q1}, [r0]! |
| vst1.32 {q2, q3}, [r0]! |
| vst1.32 {q8, q9}, [r0]! |
| vst1.32 {q10, q11}, [r0]! |
| bne .Lneon_copy_128_loop_nopld |
| ands r2, r2, #0x7f |
| beq .Lneon_exit |
| cmp r2, #32 |
| blt .Lneon_16 |
| nop |
| /* Copy blocks of 32-bytes (word aligned) at a time*/ |
| .Lneon_copy_32_a: |
| mov r12, r2, lsr #5 |
| .Lneon_copy_32_loop_a: |
| vld1.32 {q0,q1}, [r1]! |
| subs r12, r12, #1 |
| vst1.32 {q0,q1}, [r0]! |
| bne .Lneon_copy_32_loop_a |
| ands r2, r2, #0x1f |
| beq .Lneon_exit |
| .Lneon_16: |
| subs r2, r2, #16 |
| blt .Lneon_lt16 |
| vld1.32 {q8}, [r1]! |
| vst1.32 {q8}, [r0]! |
| beq .Lneon_exit |
| .Lneon_lt16: |
| movs r12, r2, lsl #29 |
| bcc .Lneon_skip8 |
| ldr r3, [r1], #4 |
| ldr r12, [r1], #4 |
| str r3, [r0], #4 |
| str r12, [r0], #4 |
| .Lneon_skip8: |
| bpl .Lneon_lt4 |
| ldr r3, [r1], #4 |
| str r3, [r0], #4 |
| .Lneon_lt4: |
| movs r2, r2, lsl #31 |
| bcc .Lneon_lt2 |
| ldrh r3, [r1], #2 |
| strh r3, [r0], #2 |
| .Lneon_lt2: |
| bpl .Lneon_exit |
| ldrb r12, [r1] |
| strb r12, [r0] |
| .Lneon_exit: |
| pop {r0} |
| bx lr |
| |
| END(__memcpy_kryo) |