| ; |
| ; Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license |
| ; that can be found in the LICENSE file in the root of the source |
| ; tree. An additional intellectual property rights grant can be found |
| ; in the file PATENTS. All contributing project authors may |
| ; be found in the AUTHORS file in the root of the source tree. |
| ; |
| |
| |
| EXPORT |vp8_memcpy_neon| |
| |
| ARM |
| REQUIRE8 |
| PRESERVE8 |
| |
| AREA ||.text||, CODE, READONLY, ALIGN=2 |
| ;========================================= |
| ;void vp8_memcpy_neon(unsigned char *dst_ptr, unsigned char *src_ptr, int sz); |
| |vp8_memcpy_neon| PROC |
| ;pld [r1] ;preload pred data |
| ;pld [r1, #128] |
| ;pld [r1, #256] |
| ;pld [r1, #384] |
| |
| mov r12, r2, lsr #8 ;copy 256 bytes data at one time |
| |
| memcpy_neon_loop |
| vld1.8 {q0, q1}, [r1]! ;load src data |
| subs r12, r12, #1 |
| vld1.8 {q2, q3}, [r1]! |
| vst1.8 {q0, q1}, [r0]! ;copy to dst_ptr |
| vld1.8 {q4, q5}, [r1]! |
| vst1.8 {q2, q3}, [r0]! |
| vld1.8 {q6, q7}, [r1]! |
| vst1.8 {q4, q5}, [r0]! |
| vld1.8 {q8, q9}, [r1]! |
| vst1.8 {q6, q7}, [r0]! |
| vld1.8 {q10, q11}, [r1]! |
| vst1.8 {q8, q9}, [r0]! |
| vld1.8 {q12, q13}, [r1]! |
| vst1.8 {q10, q11}, [r0]! |
| vld1.8 {q14, q15}, [r1]! |
| vst1.8 {q12, q13}, [r0]! |
| vst1.8 {q14, q15}, [r0]! |
| |
| ;pld [r1] ;preload pred data -- need to adjust for real device |
| ;pld [r1, #128] |
| ;pld [r1, #256] |
| ;pld [r1, #384] |
| |
| bne memcpy_neon_loop |
| |
| ands r3, r2, #0xff ;extra copy |
| beq done_copy_neon_loop |
| |
| extra_copy_neon_loop |
| vld1.8 {q0}, [r1]! ;load src data |
| subs r3, r3, #16 |
| vst1.8 {q0}, [r0]! |
| bne extra_copy_neon_loop |
| |
| done_copy_neon_loop |
| bx lr |
| ENDP |
| |
| END |
