sdl-ios-xcode: src/audio/SDL_mixer

annotate src/audio/SDL_mixer_MMX.c @ 4386:dcb26ac38e6b SDL-1.2

Fixed crash - need to save and restore rbx around cpuid, since the compiler may be assuming the stack pointer isn't being modified when filling in %0. I did it around each call to cpuid which isn't strictly necessary, but is definitely future proof. :)

author	Sam Lantinga <slouken@libsdl.org>
date	Wed, 02 Dec 2009 16:24:21 +0000
parents	a8e5b518e194
children

rev	line source
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	1 /*
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	2 SDL - Simple DirectMedia Layer
4159 a1b03ba2fcd0 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	3 Copyright (C) 1997-2009 Sam Lantinga
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	4
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	5 This library is free software; you can redistribute it and/or
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	6 modify it under the terms of the GNU Lesser General Public
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	7 License as published by the Free Software Foundation; either
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	9
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	10 This library is distributed in the hope that it will be useful,
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	13 Lesser General Public License for more details.
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	14
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	15 You should have received a copy of the GNU Lesser General Public
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	16 License along with this library; if not, write to the Free Software
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	18
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	19 Sam Lantinga
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	20 slouken@libsdl.org
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	21 */
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	22 #include "SDL_config.h"
d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	23
1019 e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	24 /*
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	25 MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	26 Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	27 This code is licensed under the LGPL (see COPYING for details)
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	28
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	29 Assumes buffer size in bytes is a multiple of 16
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	30 Assumes SDL_MIX_MAXVOLUME = 128
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	31 */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	32
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	33
1019 e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	34 /***********************************************
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	35 * Mixing for 16 bit signed buffers
e3b3130f3af8 Date: Fri, 31 Dec 2004 04:14:09 +0900 Sam Lantinga <slouken@libsdl.org> parents: 887 diff changeset	36 ***********************************************/
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37
4322 a8e5b518e194 Forcibly disabled MMX mixers. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	38 #if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1147 diff changeset	39 #if defined(__GNUC__) && defined(__i386__) && defined(SDL_ASSEMBLY_ROUTINES)
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 void SDL_MixAudio_MMX_S16(char* dst,char* src,unsigned int size,int volume)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 {
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42 __asm__ __volatile__ (
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	44 " movl %3,%%eax\n" /* eax = volume */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	46 " movl %2,%%edx\n" /* edx = size */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	48 " shrl $4,%%edx\n" /* process 16 bytes per iteration = 8 samples */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50 " jz .endS16\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 " pxor %%mm0,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54 " movd %%eax,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55 " movq %%mm0,%%mm1\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 " psllq $16,%%mm0\n"
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	61 " por %%mm1,%%mm0\n" /* mm0 = vol\|vol\|vol\|vol */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62
1411 efb34e597d21 Fixed assembly alignment error on Intel Macs. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	63 ".align 8\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64 " .mixloopS16:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	66 " movq (%1),%%mm1\n" /* mm1 = a\|b\|c\|d */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	68 " movq %%mm1,%%mm2\n" /* mm2 = a\|b\|c\|d */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	70 " movq 8(%1),%%mm4\n" /* mm4 = e\|f\|g\|h */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	72 /* pr� charger le buffer dst dans mm7 */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	73 " movq (%0),%%mm7\n" /* mm7 = dst[0] */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	75 /* multiplier par le volume */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	76 " pmullw %%mm0,%%mm1\n" /* mm1 = l(av)\|l(bv)\|l(cv)\|l(dv) */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	77
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	78 " pmulhw %%mm0,%%mm2\n" /* mm2 = h(av)\|h(bv)\|h(cv)\|h(dv) */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	79 " movq %%mm4,%%mm5\n" /* mm5 = e\|f\|g\|h */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	80
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	81 " pmullw %%mm0,%%mm4\n" /* mm4 = l(ev)\|l(fv)\|l(gv)\|l(hv) */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	83 " pmulhw %%mm0,%%mm5\n" /* mm5 = h(ev)\|h(fv)\|h(gv)\|h(hv) */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	84 " movq %%mm1,%%mm3\n" /* mm3 = l(av)\|l(bv)\|l(cv)\|l(dv) */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	86 " punpckhwd %%mm2,%%mm1\n" /* mm1 = av\|bv */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	88 " movq %%mm4,%%mm6\n" /* mm6 = l(ev)\|l(fv)\|l(gv)\|l(hv) */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	89 " punpcklwd %%mm2,%%mm3\n" /* mm3 = cv\|dv */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	90
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	91 " punpckhwd %%mm5,%%mm4\n" /* mm4 = ef\|fv */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	93 " punpcklwd %%mm5,%%mm6\n" /* mm6 = gv\|hv */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	94
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	95 /* pr� charger le buffer dst dans mm5 */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	96 " movq 8(%0),%%mm5\n" /* mm5 = dst[1] */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	98 /* diviser par 128 */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	99 " psrad $7,%%mm1\n" /* mm1 = av/128\|bv/128 , 128 = SDL_MIX_MAXVOLUME */
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	100 " add $16,%1\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	102 " psrad $7,%%mm3\n" /* mm3 = cv/128\|dv/128 */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	104 " psrad $7,%%mm4\n" /* mm4 = ev/128\|fv/128 */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	106 /* mm1 = le sample avec le volume modifi� */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	107 " packssdw %%mm1,%%mm3\n" /* mm3 = s(av\|bv\|cv\|dv) */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	109 " psrad $7,%%mm6\n" /* mm6= gv/128\|hv/128 */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	110 " paddsw %%mm7,%%mm3\n" /* mm3 = adjust_volume(src)+dst */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	112 /* mm4 = le sample avec le volume modifi� */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	113 " packssdw %%mm4,%%mm6\n" /* mm6 = s(ev\|fv\|gv\|hv) */
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	114 " movq %%mm3,(%0)\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	116 " paddsw %%mm5,%%mm6\n" /* mm6 = adjust_volume(src)+dst */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	118 " movq %%mm6,8(%0)\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	120 " add $16,%0\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	121
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	122 " dec %%edx\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	123
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	124 " jnz .mixloopS16\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	125
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	126 " emms\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	127
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	128 ".endS16:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	129 :
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	130 : "r" (dst), "r"(src),"m"(size),
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131 "m"(volume)
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	132 : "eax","edx","memory"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	133 );
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	134 }
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	135
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	136
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	138 /////////////////////////////////////////////// /
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	139 /* Mixing for 8 bit signed buffers */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	140 /////////////////////////////////////////////// /
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	142 void SDL_MixAudio_MMX_S8(char* dst,char* src,unsigned int size,int volume)
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	143 {
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144 __asm__ __volatile__ (
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	145
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	146 " movl %3,%%eax\n" /* eax = volume */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	147
1147 b580f7201543 From: "Alex Volkov" <avcp-sdlmail@usa.net> Ryan C. Gordon <icculus@icculus.org> parents: 1019 diff changeset	148 " movd %%eax,%%mm0\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	149 " movq %%mm0,%%mm1\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	150 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	151 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	152 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	153 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	154 " psllq $16,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	155 " por %%mm1,%%mm0\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	156
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	157 " movl %2,%%edx\n" /* edx = size */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	158 " shr $3,%%edx\n" /* process 8 bytes per iteration = 8 samples */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	159
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	160 " cmp $0,%%edx\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	161 " je .endS8\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	162
1411 efb34e597d21 Fixed assembly alignment error on Intel Macs. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	163 ".align 8\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	164 " .mixloopS8:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	165
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	166 " pxor %%mm2,%%mm2\n" /* mm2 = 0 */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	167 " movq (%1),%%mm1\n" /* mm1 = a\|b\|c\|d\|e\|f\|g\|h */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	168
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	169 " movq %%mm1,%%mm3\n" /* mm3 = a\|b\|c\|d\|e\|f\|g\|h */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	170
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	171 /* on va faire le "sign extension" en faisant un cmp avec 0 qui retourne 1 si <0, 0 si >0 */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	172 " pcmpgtb %%mm1,%%mm2\n" /* mm2 = 11111111\|00000000\|00000000.... */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	173
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	174 " punpckhbw %%mm2,%%mm1\n" /* mm1 = 0\|a\|0\|b\|0\|c\|0\|d */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	175
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	176 " punpcklbw %%mm2,%%mm3\n" /* mm3 = 0\|e\|0\|f\|0\|g\|0\|h */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	177 " movq (%0),%%mm2\n" /* mm2 = destination */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	178
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	179 " pmullw %%mm0,%%mm1\n" /* mm1 = va\|vb\|vc\|vd */
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	180 " add $8,%1\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	181
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	182 " pmullw %%mm0,%%mm3\n" /* mm3 = ve\|vf\|vg\|vh */
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	183 " psraw $7,%%mm1\n" /* mm1 = va/128\|vb/128\|vc/128\|vd/128 */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	184
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	185 " psraw $7,%%mm3\n" /* mm3 = ve/128\|vf/128\|vg/128\|vh/128 */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	186
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	187 " packsswb %%mm1,%%mm3\n" /* mm1 = va/128\|vb/128\|vc/128\|vd/128\|ve/128\|vf/128\|vg/128\|vh/128 */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	188
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	189 " paddsb %%mm2,%%mm3\n" /* add to destination buffer */
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	190
1612 97d0966f4bf7 Fixed some ultra-pedantic gcc warnings Sam Lantinga <slouken@libsdl.org> parents: 1411 diff changeset	191 " movq %%mm3,(%0)\n" /* store back to ram */
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	192 " add $8,%0\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	193
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	194 " dec %%edx\n"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	195
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	196 " jnz .mixloopS8\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	197
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	198 ".endS8:\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	199 " emms\n"
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	200 :
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	201 : "r" (dst), "r"(src),"m"(size),
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	202 "m"(volume)
887 b4b64bb88f2f Date: Mon, 10 May 2004 10:17:46 -0400 Sam Lantinga <slouken@libsdl.org> parents: 539 diff changeset	203 : "eax","edx","memory"
539 a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	204 );
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	205 }
a9e38f3b8e4d Added MMX audio mixing code for gcc (thanks Stephane!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206 #endif
4322 a8e5b518e194 Forcibly disabled MMX mixers. Ryan C. Gordon <icculus@icculus.org> parents: 4159 diff changeset	207 #endif

Mercurial > sdl-ios-xcode

annotate src/audio/SDL_mixer_MMX.c @ 4386:dcb26ac38e6b SDL-1.2