blob: 21b557085aae79a8a113f8da821f4b917b472b2c [file] [log] [blame]
@/*****************************************************************************
@*
@* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
@*
@* Licensed under the Apache License, Version 2.0 (the "License");
@* you may not use this file except in compliance with the License.
@* You may obtain a copy of the License at:
@*
@* http://www.apache.org/licenses/LICENSE-2.0
@*
@* Unless required by applicable law or agreed to in writing, software
@* distributed under the License is distributed on an "AS IS" BASIS,
@* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@* See the License for the specific language governing permissions and
@* limitations under the License.
@*
@*****************************************************************************/
@/**
@ *******************************************************************************
@ * ,:file
@ * ihevc_mem_fns_neon.s
@ *
@ * ,:brief
@ * Contains function definitions for memory manipulation
@ *
@ * ,:author
@ * Naveen SR
@ *
@ * ,:par List of Functions:
@ * - ihevc_memcpy()
@ * - ihevc_memset_mul_8()
@ * - ihevc_memset_16bit_mul_8()
@ *
@ * ,:remarks
@ * None
@ *
@ *******************************************************************************
@*/
@/**
@*******************************************************************************
@*
@* ,:brief
@* memcpy of a 1d array
@*
@* ,:par Description:
@* Does memcpy of 8bit data from source to destination for 8,16 or 32 number of bytes
@*
@* ,:param[in] pu1_dst
@* UWORD8 pointer to the destination
@*
@* ,:param[in] pu1_src
@* UWORD8 pointer to the source
@*
@* ,:param[in] num_bytes
@* number of bytes to copy
@* ,:returns
@*
@* ,:remarks
@* None
@*
@*******************************************************************************
@*/
@void ihevc_memcpy_mul_8(UWORD8 *pu1_dst,
@ UWORD8 *pu1_src,
@ UWORD8 num_bytes)
@**************Variables Vs Registers*************************
@ r0 => *pu1_dst
@ r1 => *pu1_src
@ r2 => num_bytes
.text
.p2align 2
.global ihevc_memcpy_mul_8_a9q
.type ihevc_memcpy_mul_8_a9q, %function
ihevc_memcpy_mul_8_a9q:
LOOP_NEON_MEMCPY_MUL_8:
@ Memcpy 8 bytes
VLD1.8 d0,[r1]!
VST1.8 d0,[r0]!
SUBS r2,r2,#8
BNE LOOP_NEON_MEMCPY_MUL_8
MOV PC,LR
@*******************************************************************************
@*/
@void ihevc_memcpy(UWORD8 *pu1_dst,
@ UWORD8 *pu1_src,
@ UWORD8 num_bytes)
@**************Variables Vs Registers*************************
@ r0 => *pu1_dst
@ r1 => *pu1_src
@ r2 => num_bytes
.global ihevc_memcpy_a9q
.type ihevc_memcpy_a9q, %function
ihevc_memcpy_a9q:
SUBS r2,#8
BLT ARM_MEMCPY
LOOP_NEON_MEMCPY:
@ Memcpy 8 bytes
VLD1.8 d0,[r1]!
VST1.8 d0,[r0]!
SUBS r2,#8
BGE LOOP_NEON_MEMCPY
CMP r2,#-8
BXEQ LR
ARM_MEMCPY:
ADD r2,#8
LOOP_ARM_MEMCPY:
LDRB r3,[r1],#1
STRB r3,[r0],#1
SUBS r2,#1
BNE LOOP_ARM_MEMCPY
BX LR
@void ihevc_memset_mul_8(UWORD8 *pu1_dst,
@ UWORD8 value,
@ UWORD8 num_bytes)
@**************Variables Vs Registers*************************
@ r0 => *pu1_dst
@ r1 => value
@ r2 => num_bytes
.text
.p2align 2
.global ihevc_memset_mul_8_a9q
.type ihevc_memset_mul_8_a9q, %function
ihevc_memset_mul_8_a9q:
@ Assumptions: numbytes is either 8, 16 or 32
VDUP.8 d0,r1
LOOP_MEMSET_MUL_8:
@ Memset 8 bytes
VST1.8 d0,[r0]!
SUBS r2,r2,#8
BNE LOOP_MEMSET_MUL_8
BX LR
@void ihevc_memset(UWORD8 *pu1_dst,
@ UWORD8 value,
@ UWORD8 num_bytes)
@**************Variables Vs Registers*************************
@ r0 => *pu1_dst
@ r1 => value
@ r2 => num_bytes
.global ihevc_memset_a9q
.type ihevc_memset_a9q, %function
ihevc_memset_a9q:
SUBS r2,#8
BLT ARM_MEMSET
VDUP.8 d0,r1
LOOP_NEON_MEMSET:
@ Memcpy 8 bytes
VST1.8 d0,[r0]!
SUBS r2,#8
BGE LOOP_NEON_MEMSET
CMP r2,#-8
BXEQ LR
ARM_MEMSET:
ADD r2,#8
LOOP_ARM_MEMSET:
STRB r1,[r0],#1
SUBS r2,#1
BNE LOOP_ARM_MEMSET
BX LR
@void ihevc_memset_16bit_mul_8(UWORD16 *pu2_dst,
@ UWORD16 value,
@ UWORD8 num_words)
@**************Variables Vs Registers*************************
@ r0 => *pu2_dst
@ r1 => value
@ r2 => num_words
.text
.p2align 2
.global ihevc_memset_16bit_mul_8_a9q
.type ihevc_memset_16bit_mul_8_a9q, %function
ihevc_memset_16bit_mul_8_a9q:
@ Assumptions: num_words is either 8, 16 or 32
@ Memset 8 words
VDUP.16 d0,r1
LOOP_MEMSET_16BIT_MUL_8:
VST1.16 d0,[r0]!
VST1.16 d0,[r0]!
SUBS r2,r2,#8
BNE LOOP_MEMSET_16BIT_MUL_8
BX LR
@void ihevc_memset_16bit(UWORD16 *pu2_dst,
@ UWORD16 value,
@ UWORD8 num_words)
@**************Variables Vs Registers*************************
@ r0 => *pu2_dst
@ r1 => value
@ r2 => num_words
.global ihevc_memset_16bit_a9q
.type ihevc_memset_16bit_a9q, %function
ihevc_memset_16bit_a9q:
SUBS r2,#8
BLT ARM_MEMSET_16BIT
VDUP.16 d0,r1
LOOP_NEON_MEMSET_16BIT:
@ Memset 8 words
VST1.16 d0,[r0]!
VST1.16 d0,[r0]!
SUBS r2,#8
BGE LOOP_NEON_MEMSET_16BIT
CMP r2,#-8
BXEQ LR
ARM_MEMSET_16BIT:
ADD r2,#8
LOOP_ARM_MEMSET_16BIT:
STRH r1,[r0],#2
SUBS r2,#1
BNE LOOP_ARM_MEMSET_16BIT
BX LR
.section .note.GNU-stack,"",%progbits