#    Copyright (C) 2002 Guillaume Morin <guillaume@morinfr.org>, Alc魐e##    This program is free software; you can redistribute it and/or modify#    it under the terms of the GNU General Public License as published by#    the Free Software Foundation; either version 2 of the License, or#    (at your option) any later version.##    This program is distributed in the hope that it will be useful,#    but WITHOUT ANY WARRANTY; without even the implied warranty of#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the#    GNU General Public License for more details.##    You should have received a copy of the GNU General Public License#    along with this program; if not, write to the Free Software#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA###    $Id$#    $Source$#    $Date$#    $Author$##    This is my first PPC ASM attempt. So I might do nasty things.#    Please send any comments to <guillaume@morinfr.org># Returns a field of bits that indicates non zero ac blocks# for this macro block## uint32_t calc_cbp_c(const int16_t codes[6][64])#{#	uint32_t i, j;#	uint32_t cbp = 0;##	for (i = 0; i < 6; i++) {#		for (j = 1; j < 61; j+=4) {#			if (codes[i][j]  |codes[i][j+1]|#			    codes[i][j+2]|codes[i][j+3]) {#				cbp |= 1 << (5 - i);#				break;#			}#		}##		if(codes[i][j]|codes[i][j+1]|codes[i][j+2])#			cbp |= 1 << (5 - i);##	}##	return cbp;##}.data.skip:	.quad 0x0000FFFFFFFFFFFF,-1.align 4.text.global calc_cbp_altiveccalc_cbp_altivec:	# Set VRSAVE	li %r4,0xFFFFFFFF	mtspr 256,%r4		# r9 will contain coeffs addr	mr %r9,%r3	# r3 contains the result, therefore we set it to 0	li %r3,0		# CTR is the loop counter (rows)	li %r4,6	mtctr %r4		# VR9 contains 0	vxor 9,9,9	# VR10 will help us to remove the first 16 bits of each row	lis %r4,.skip@ha	addi %r4,4,.skip@l	lvx 10,0,%r4.loop:	mr %r6,%r9	lvxl 1,0,%r6	# Set the first 16 bits to 0	vand 1,1,10	addi %r6,%r6,16	lvxl 2,0,6		addi %r6,%r6,16	lvxl 3,0,6		addi %r6,%r6,16	lvxl 4,0,6		addi %r6,%r6,16	lvxl 5,0,6		addi %r6,%r6,16	lvxl 6,0,6		addi %r6,%r6,16	lvxl 7,0,6		addi %r6,%r6,16	lvxl 8,0,6	vor 1,2,1	vor 1,3,1	vor 1,4,1	vor 1,5,1	vor 1,6,1	vor 1,7,1	vor 1,8,1		# is VR1 == 0	vcmpequw. 3,1,9	bt 24,.newline.cbp:	# cbp calc	mfctr %r5	subi %r5,%r5,1	li %r4,1	slw %r4,%r4,%r5	or %r3,%r3,%r4.newline:	addi %r9,%r9,128	bdnz .loop	blr