85 lines
2.5 KiB
NASM
85 lines
2.5 KiB
NASM
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; Copyright (c) 2013 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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EXPORT |vp9_convolve_copy_neon|
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ARM
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REQUIRE8
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PRESERVE8
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AREA ||.text||, CODE, READONLY, ALIGN=2
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|vp9_convolve_copy_neon| PROC
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push {r4-r5, lr}
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ldrd r4, r5, [sp, #28]
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cmp r4, #32
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bgt copy64
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beq copy32
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cmp r4, #8
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bgt copy16
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beq copy8
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b copy4
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copy64
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sub lr, r1, #32
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sub r3, r3, #32
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copy64_h
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pld [r0, r1, lsl #1]
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vld1.8 {q0-q1}, [r0]!
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vld1.8 {q2-q3}, [r0], lr
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vst1.8 {q0-q1}, [r2@128]!
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vst1.8 {q2-q3}, [r2@128], r3
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subs r5, r5, #1
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bgt copy64_h
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pop {r4-r5, pc}
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copy32
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pld [r0, r1, lsl #1]
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vld1.8 {q0-q1}, [r0], r1
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pld [r0, r1, lsl #1]
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vld1.8 {q2-q3}, [r0], r1
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vst1.8 {q0-q1}, [r2@128], r3
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vst1.8 {q2-q3}, [r2@128], r3
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subs r5, r5, #2
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bgt copy32
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pop {r4-r5, pc}
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copy16
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pld [r0, r1, lsl #1]
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vld1.8 {q0}, [r0], r1
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pld [r0, r1, lsl #1]
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vld1.8 {q1}, [r0], r1
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vst1.8 {q0}, [r2@128], r3
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vst1.8 {q1}, [r2@128], r3
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subs r5, r5, #2
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bgt copy16
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pop {r4-r5, pc}
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copy8
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pld [r0, r1, lsl #1]
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vld1.8 {d0}, [r0], r1
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pld [r0, r1, lsl #1]
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vld1.8 {d2}, [r0], r1
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vst1.8 {d0}, [r2@64], r3
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vst1.8 {d2}, [r2@64], r3
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subs r5, r5, #2
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bgt copy8
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pop {r4-r5, pc}
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copy4
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ldr r12, [r0], r1
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str r12, [r2], r3
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subs r5, r5, #1
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bgt copy4
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pop {r4-r5, pc}
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ENDP
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END
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