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273 lines
5.8 KiB
273 lines
5.8 KiB
@/******************************************************************************
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@ *
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@ * Copyright (C) 2015 The Android Open Source Project
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@ *
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@ * Licensed under the Apache License, Version 2.0 (the "License");
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@ * you may not use this file except in compliance with the License.
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@ * You may obtain a copy of the License at:
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@ *
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@ * http://www.apache.org/licenses/LICENSE-2.0
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@ *
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@ * Unless required by applicable law or agreed to in writing, software
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@ * distributed under the License is distributed on an "AS IS" BASIS,
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@ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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@ * See the License for the specific language governing permissions and
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@ * limitations under the License.
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@ *
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@ *****************************************************************************
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@ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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@*/
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@**
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@ *******************************************************************************
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@ * @file
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@ * ih264_mem_fns_neon.s
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@ *
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@ * @brief
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@ * Contains function definitions for memory manipulation
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@ *
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@ * @author
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@ * Naveen SR
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@ *
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@ * @par List of Functions:
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@ * - ih264_memcpy_mul_8_a9q()
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@ * - ih264_memcpy_a9q()
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@ * - ih264_memset_mul_8_a9q()
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@ * - ih264_memset_a9q()
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@ * - ih264_memset_16bit_mul_8_a9q()
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@ * - ih264_memset_a9q()
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@ *
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@ * @remarks
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@ * None
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@ *
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@ *******************************************************************************
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@*
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@**
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@*******************************************************************************
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@*
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@* @brief
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@* memcpy of a 1d array
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@*
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@* @par Description:
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@* Does memcpy of 8bit data from source to destination for 8,16 or 32 number of bytes
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@*
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@* @param[in] pu1_dst
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@* UWORD8 pointer to the destination
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@*
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@* @param[in] pu1_src
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@* UWORD8 pointer to the source
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@*
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@* @param[in] num_bytes
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@* number of bytes to copy
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@* @returns
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@*
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@* @remarks
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@* None
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@*
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@*******************************************************************************
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@*
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@void ih264_memcpy_mul_8(UWORD8 *pu1_dst,
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@ UWORD8 *pu1_src,
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@ UWORD32 num_bytes)
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@**************Variables Vs Registers*************************
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@ r0 => *pu1_dst
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@ r1 => *pu1_src
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@ r2 => num_bytes
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.text
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.p2align 2
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.global ih264_memcpy_mul_8_a9q
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ih264_memcpy_mul_8_a9q:
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loop_neon_memcpy_mul_8:
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@ Memcpy 8 bytes
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vld1.8 d0, [r1]!
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vst1.8 d0, [r0]!
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subs r2, r2, #8
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bne loop_neon_memcpy_mul_8
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bx lr
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@*******************************************************************************
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@*
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@void ih264_memcpy(UWORD8 *pu1_dst,
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@ UWORD8 *pu1_src,
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@ UWORD32 num_bytes)
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@**************Variables Vs Registers*************************
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@ r0 => *pu1_dst
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@ r1 => *pu1_src
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@ r2 => num_bytes
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.global ih264_memcpy_a9q
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ih264_memcpy_a9q:
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subs r2, #8
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blt memcpy
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loop_neon_memcpy:
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@ Memcpy 8 bytes
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vld1.8 d0, [r1]!
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vst1.8 d0, [r0]!
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subs r2, #8
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bge loop_neon_memcpy
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cmp r2, #-8
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bxeq lr
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memcpy:
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add r2, #8
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loop_memcpy:
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ldrb r3, [r1], #1
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strb r3, [r0], #1
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subs r2, #1
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bne loop_memcpy
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bx lr
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@void ih264_memset_mul_8(UWORD8 *pu1_dst,
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@ UWORD8 value,
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@ UWORD32 num_bytes)
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@**************Variables Vs Registers*************************
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@ r0 => *pu1_dst
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@ r1 => value
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@ r2 => num_bytes
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.global ih264_memset_mul_8_a9q
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ih264_memset_mul_8_a9q:
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@ Assumptions: numbytes is either 8, 16 or 32
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vdup.8 d0, r1
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loop_memset_mul_8:
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@ Memset 8 bytes
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vst1.8 d0, [r0]!
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subs r2, r2, #8
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bne loop_memset_mul_8
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bx lr
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@void ih264_memset(UWORD8 *pu1_dst,
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@ UWORD8 value,
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@ UWORD8 num_bytes)
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@**************Variables Vs Registers*************************
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@ r0 => *pu1_dst
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@ r1 => value
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@ r2 => num_bytes
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.global ih264_memset_a9q
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ih264_memset_a9q:
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subs r2, #8
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blt memset
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vdup.8 d0, r1
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loop_neon_memset:
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@ Memcpy 8 bytes
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vst1.8 d0, [r0]!
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subs r2, #8
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bge loop_neon_memset
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cmp r2, #-8
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bxeq lr
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memset:
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add r2, #8
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loop_memset:
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strb r1, [r0], #1
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subs r2, #1
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bne loop_memset
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bx lr
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@void ih264_memset_16bit_mul_8(UWORD16 *pu2_dst,
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@ UWORD16 value,
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@ UWORD32 num_words)
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@**************Variables Vs Registers*************************
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@ r0 => *pu2_dst
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@ r1 => value
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@ r2 => num_words
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.global ih264_memset_16bit_mul_8_a9q
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ih264_memset_16bit_mul_8_a9q:
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@ Assumptions: num_words is either 8, 16 or 32
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@ Memset 8 words
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vdup.16 d0, r1
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loop_memset_16bit_mul_8:
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vst1.16 d0, [r0]!
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vst1.16 d0, [r0]!
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subs r2, r2, #8
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bne loop_memset_16bit_mul_8
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bx lr
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@void ih264_memset_16bit(UWORD16 *pu2_dst,
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@ UWORD16 value,
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@ UWORD32 num_words)
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@**************Variables Vs Registers*************************
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@ r0 => *pu2_dst
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@ r1 => value
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@ r2 => num_words
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.global ih264_memset_16bit_a9q
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ih264_memset_16bit_a9q:
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subs r2, #8
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blt memset_16bit
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vdup.16 d0, r1
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loop_neon_memset_16bit:
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@ Memset 8 words
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vst1.16 d0, [r0]!
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vst1.16 d0, [r0]!
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subs r2, #8
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bge loop_neon_memset_16bit
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cmp r2, #-8
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bxeq lr
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memset_16bit:
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add r2, #8
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loop_memset_16bit:
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strh r1, [r0], #2
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subs r2, #1
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bne loop_memset_16bit
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bx lr
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