ref: 1b70862916bc33e372f95c725bd24947b0afb308
dir: /vp8/common/ppc/recon_altivec.asm/
; ; 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. ; .globl recon4b_ppc .globl recon2b_ppc .globl recon_b_ppc .macro row_of16 Diff Pred Dst Stride lvx v1, 0, \Pred ;# v1 = pred = p0..p15 addi \Pred, \Pred, 16 ;# next pred vmrghb v2, v0, v1 ;# v2 = 16-bit p0..p7 lvx v3, 0, \Diff ;# v3 = d0..d7 vaddshs v2, v2, v3 ;# v2 = r0..r7 vmrglb v1, v0, v1 ;# v1 = 16-bit p8..p15 lvx v3, r8, \Diff ;# v3 = d8..d15 addi \Diff, \Diff, 32 ;# next diff vaddshs v3, v3, v1 ;# v3 = r8..r15 vpkshus v2, v2, v3 ;# v2 = 8-bit r0..r15 stvx v2, 0, \Dst ;# to dst add \Dst, \Dst, \Stride ;# next dst .endm .text .align 2 ;# r3 = short *diff_ptr, ;# r4 = unsigned char *pred_ptr, ;# r5 = unsigned char *dst_ptr, ;# r6 = int stride recon4b_ppc: mfspr r0, 256 ;# get old VRSAVE stw r0, -8(r1) ;# save old VRSAVE to stack oris r0, r0, 0xf000 mtspr 256,r0 ;# set VRSAVE vxor v0, v0, v0 li r8, 16 row_of16 r3, r4, r5, r6 row_of16 r3, r4, r5, r6 row_of16 r3, r4, r5, r6 row_of16 r3, r4, r5, r6 lwz r12, -8(r1) ;# restore old VRSAVE from stack mtspr 256, r12 ;# reset old VRSAVE blr .macro two_rows_of8 Diff Pred Dst Stride write_first_four_pels lvx v1, 0, \Pred ;# v1 = pred = p0..p15 vmrghb v2, v0, v1 ;# v2 = 16-bit p0..p7 lvx v3, 0, \Diff ;# v3 = d0..d7 vaddshs v2, v2, v3 ;# v2 = r0..r7 vmrglb v1, v0, v1 ;# v1 = 16-bit p8..p15 lvx v3, r8, \Diff ;# v2 = d8..d15 vaddshs v3, v3, v1 ;# v3 = r8..r15 vpkshus v2, v2, v3 ;# v3 = 8-bit r0..r15 stvx v2, 0, r10 ;# 2 rows to dst from buf lwz r0, 0(r10) .if \write_first_four_pels stw r0, 0(\Dst) .else stwux r0, \Dst, \Stride .endif lwz r0, 4(r10) stw r0, 4(\Dst) lwz r0, 8(r10) stwux r0, \Dst, \Stride ;# advance dst to next row lwz r0, 12(r10) stw r0, 4(\Dst) .endm .align 2 ;# r3 = short *diff_ptr, ;# r4 = unsigned char *pred_ptr, ;# r5 = unsigned char *dst_ptr, ;# r6 = int stride recon2b_ppc: mfspr r0, 256 ;# get old VRSAVE stw r0, -8(r1) ;# save old VRSAVE to stack oris r0, r0, 0xf000 mtspr 256,r0 ;# set VRSAVE vxor v0, v0, v0 li r8, 16 la r10, -48(r1) ;# buf two_rows_of8 r3, r4, r5, r6, 1 addi r4, r4, 16; ;# next pred addi r3, r3, 32; ;# next diff two_rows_of8 r3, r4, r5, r6, 0 lwz r12, -8(r1) ;# restore old VRSAVE from stack mtspr 256, r12 ;# reset old VRSAVE blr .macro get_two_diff_rows stw r0, 0(r10) lwz r0, 4(r3) stw r0, 4(r10) lwzu r0, 32(r3) stw r0, 8(r10) lwz r0, 4(r3) stw r0, 12(r10) lvx v3, 0, r10 .endm .align 2 ;# r3 = short *diff_ptr, ;# r4 = unsigned char *pred_ptr, ;# r5 = unsigned char *dst_ptr, ;# r6 = int stride recon_b_ppc: mfspr r0, 256 ;# get old VRSAVE stw r0, -8(r1) ;# save old VRSAVE to stack oris r0, r0, 0xf000 mtspr 256,r0 ;# set VRSAVE vxor v0, v0, v0 la r10, -48(r1) ;# buf lwz r0, 0(r4) stw r0, 0(r10) lwz r0, 16(r4) stw r0, 4(r10) lwz r0, 32(r4) stw r0, 8(r10) lwz r0, 48(r4) stw r0, 12(r10) lvx v1, 0, r10; ;# v1 = pred = p0..p15 lwz r0, 0(r3) ;# v3 = d0..d7 get_two_diff_rows vmrghb v2, v0, v1; ;# v2 = 16-bit p0..p7 vaddshs v2, v2, v3; ;# v2 = r0..r7 lwzu r0, 32(r3) ;# v3 = d8..d15 get_two_diff_rows vmrglb v1, v0, v1; ;# v1 = 16-bit p8..p15 vaddshs v3, v3, v1; ;# v3 = r8..r15 vpkshus v2, v2, v3; ;# v2 = 8-bit r0..r15 stvx v2, 0, r10; ;# 16 pels to dst from buf lwz r0, 0(r10) stw r0, 0(r5) lwz r0, 4(r10) stwux r0, r5, r6 lwz r0, 8(r10) stwux r0, r5, r6 lwz r0, 12(r10) stwx r0, r5, r6 lwz r12, -8(r1) ;# restore old VRSAVE from stack mtspr 256, r12 ;# reset old VRSAVE blr