319 lines
6.5 KiB
ArmAsm
319 lines
6.5 KiB
ArmAsm
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/*
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decode_3dnow.s - 3DNow! optimized synth_1to1()
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copyright ?-2007 by the mpg123 project - free software under the terms of the LGPL 2.1
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see COPYING and AUTHORS files in distribution or http://mpg123.org
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initially written by Syuuhei Kashiyama
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This code based 'decode_3dnow.s' by Syuuhei Kashiyama
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<squash@mb.kcom.ne.jp>,only two types of changes have been made:
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- remove PREFETCH instruction for speedup
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- change function name for support 3DNow! automatic detect
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- femms moved to before 'call dct64_3dnow'
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You can find Kashiyama's original 3dnow! support patch
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(for mpg123-0.59o) at
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http://user.ecc.u-tokyo.ac.jp/~g810370/linux-simd/ (Japanese).
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by KIMURA Takuhiro <kim@hannah.ipc.miyakyo-u.ac.jp> - until 31.Mar.1999
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<kim@comtec.co.jp> - after 1.Apr.1999
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Replacement of synth_1to1() with AMD's 3DNow! SIMD operations support
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Syuuhei Kashiyama <squash@mb.kcom.ne.jp>
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The author of this program disclaim whole expressed or implied
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warranties with regard to this program, and in no event shall the
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author of this program liable to whatever resulted from the use of
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this program. Use it at your own risk.
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*/
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#include "mangle.h"
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#ifdef ACCURATE_ROUNDING
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#ifndef __APPLE__
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.section .rodata
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#else
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.data
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#endif
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ALIGN8
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max_s16:
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.long 1191181824 /* 32767.0 */
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.long 1191181824
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min_s16:
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.long -956301312 /* -32768.0 */
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.long -956301312
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ftoi_magic:
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.long 1262485504 /* 2^23 + 2^22 */
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.long 1262485504
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#endif
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.text
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ALIGN16
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.globl ASM_NAME(synth_1to1_3dnow_asm)
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/* int synth_1to1_3dnow_asm(real *bandPtr, int channel, unsigned char *out, unsigned char *buffs, int *bo, real *decwin); */
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ASM_NAME(synth_1to1_3dnow_asm):
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subl $24,%esp
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pushl %ebp
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pushl %edi
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xorl %ebp,%ebp
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pushl %esi
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pushl %ebx
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/* stack old: 0=ebx 4=esi 8=edi 12=ebp 16,20,24,28,32,36=local 40=back 44=bandptr 48=channel 52=out 56=pnt */
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/* stack new: 0=ebx 4=esi 8=edi 12=ebp 16,20,24,28,32,36=local 40=back 44=bandptr 48=channel 52=out 56=buffs 60=bo 64=decwin */
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#define OUT 52(%esp)
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#define CHANNEL 48(%esp)
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#define BANDPTR 44(%esp)
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#define BUFFS 56(%esp)
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#define BO 60(%esp)
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#define DECWIN 64(%esp)
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#define LOCAL0 16(%esp)
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#define LOCAL1 20(%esp)
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#define LOCAL5 36(%esp)
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movl OUT,%esi
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movl %esi,LOCAL0 /* save buffer start (samples pointer) to another local var */
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movl CHANNEL,%ebx
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movl BO,%esi /* bo address */
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movl (%esi),%edx /* bo value */
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femms
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testl %ebx,%ebx
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jne .L26
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/* if(!channel) */
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decl %edx /* --bo */
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andl $15,%edx
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movl %edx,(%esi) /* save bo */
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movl BUFFS,%ecx
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jmp .L27
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.L26: /* if(channel) */
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addl $2,LOCAL0 /* samples++ */
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movl BUFFS,%ecx
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addl $2176,%ecx
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.L27:
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/* edx (and it's lower end) still holds bo value */
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testb $1,%dl /* bo & 0x1 */
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je .L28
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movl %edx,LOCAL5
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movl %ecx,%ebx
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movl BANDPTR,%esi
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movl %edx,%edi
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pushl %esi
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sall $2,%edi
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movl %ebx,%eax
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movl %edi,24(%esp) /* LOCAL1, actually */
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addl %edi,%eax
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pushl %eax
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movl %edx,%eax
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incl %eax
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andl $15,%eax
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leal 1088(,%eax,4),%eax
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addl %ebx,%eax
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pushl %eax
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call ASM_NAME(dct64_3dnow)
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addl $12,%esp
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jmp .L29
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.L28:
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leal 1(%edx),%esi
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movl BANDPTR,%edi
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movl %esi,LOCAL5
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leal 1092(%ecx,%edx,4),%eax
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pushl %edi
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leal 1088(%ecx),%ebx
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pushl %eax
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sall $2,%esi
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leal (%ecx,%edx,4),%eax
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pushl %eax
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call ASM_NAME(dct64_3dnow)
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addl $12,%esp
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movl %esi,LOCAL1
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.L29:
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movl DECWIN,%edx
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addl $64,%edx
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movl $16,%ecx
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subl LOCAL1,%edx
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movl LOCAL0,%edi
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pcmpeqb %mm7,%mm7
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pslld $31,%mm7
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movq (%edx),%mm0
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movq (%ebx),%mm1
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ALIGN32
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.L33:
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movq 8(%edx),%mm3
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pfmul %mm1,%mm0
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movq 8(%ebx),%mm4
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movq 16(%edx),%mm5
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pfmul %mm4,%mm3
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movq 16(%ebx),%mm6
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pfadd %mm3,%mm0
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movq 24(%edx),%mm1
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pfmul %mm6,%mm5
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movq 24(%ebx),%mm2
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pfadd %mm5,%mm0
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movq 32(%edx),%mm3
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pfmul %mm2,%mm1
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movq 32(%ebx),%mm4
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pfadd %mm1,%mm0
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movq 40(%edx),%mm5
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pfmul %mm4,%mm3
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movq 40(%ebx),%mm6
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pfadd %mm3,%mm0
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movq 48(%edx),%mm1
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pfmul %mm6,%mm5
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movq 48(%ebx),%mm2
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pfadd %mm0,%mm5
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movq 56(%edx),%mm3
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pfmul %mm1,%mm2
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movq 56(%ebx),%mm4
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pfadd %mm5,%mm2
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addl $64,%ebx
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subl $-128,%edx
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movq (%edx),%mm0
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pfmul %mm4,%mm3
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movq (%ebx),%mm1
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pfadd %mm3,%mm2
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movq %mm2,%mm3
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psrlq $32,%mm3
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pfsub %mm3,%mm2
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incl %ebp
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#ifdef ACCURATE_ROUNDING
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pfmin (max_s16),%mm2
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pfmax (min_s16),%mm2
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pfadd (ftoi_magic),%mm2
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#else
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pf2id %mm2,%mm2
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packssdw %mm2,%mm2
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#endif
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movd %mm2,%eax
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movw %ax,0(%edi)
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addl $4,%edi
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decl %ecx
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jnz .L33
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movd (%ebx),%mm0
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movd (%edx),%mm1
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punpckldq 8(%ebx),%mm0
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punpckldq 8(%edx),%mm1
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movd 16(%ebx),%mm3
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movd 16(%edx),%mm4
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pfmul %mm1,%mm0
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punpckldq 24(%ebx),%mm3
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punpckldq 24(%edx),%mm4
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movd 32(%ebx),%mm5
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movd 32(%edx),%mm6
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pfmul %mm4,%mm3
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punpckldq 40(%ebx),%mm5
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punpckldq 40(%edx),%mm6
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pfadd %mm3,%mm0
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movd 48(%ebx),%mm1
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movd 48(%edx),%mm2
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pfmul %mm6,%mm5
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punpckldq 56(%ebx),%mm1
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punpckldq 56(%edx),%mm2
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pfadd %mm5,%mm0
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pfmul %mm2,%mm1
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pfadd %mm1,%mm0
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pfacc %mm1,%mm0
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#ifdef ACCURATE_ROUNDING
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pfmin (max_s16),%mm0
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pfmax (min_s16),%mm0
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pfadd (ftoi_magic),%mm0
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#else
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pf2id %mm0,%mm0
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packssdw %mm0,%mm0
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#endif
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movd %mm0,%eax
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movw %ax,0(%edi)
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incl %ebp
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movl LOCAL5,%esi
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addl $-64,%ebx
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movl $15,%ebp
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addl $4,%edi
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leal -128(%edx,%esi,8),%edx
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movl $15,%ecx
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movd (%ebx),%mm0
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movd -4(%edx),%mm1
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punpckldq 4(%ebx),%mm0
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punpckldq -8(%edx),%mm1
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ALIGN32
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.L46:
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movd 8(%ebx),%mm3
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movd -12(%edx),%mm4
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pfmul %mm1,%mm0
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punpckldq 12(%ebx),%mm3
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punpckldq -16(%edx),%mm4
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movd 16(%ebx),%mm5
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movd -20(%edx),%mm6
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pfmul %mm4,%mm3
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punpckldq 20(%ebx),%mm5
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punpckldq -24(%edx),%mm6
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pfadd %mm3,%mm0
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movd 24(%ebx),%mm1
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movd -28(%edx),%mm2
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pfmul %mm6,%mm5
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punpckldq 28(%ebx),%mm1
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punpckldq -32(%edx),%mm2
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pfadd %mm5,%mm0
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movd 32(%ebx),%mm3
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movd -36(%edx),%mm4
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pfmul %mm2,%mm1
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punpckldq 36(%ebx),%mm3
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punpckldq -40(%edx),%mm4
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pfadd %mm1,%mm0
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movd 40(%ebx),%mm5
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movd -44(%edx),%mm6
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pfmul %mm4,%mm3
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punpckldq 44(%ebx),%mm5
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punpckldq -48(%edx),%mm6
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pfadd %mm3,%mm0
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movd 48(%ebx),%mm1
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movd -52(%edx),%mm2
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pfmul %mm6,%mm5
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punpckldq 52(%ebx),%mm1
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punpckldq -56(%edx),%mm2
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pfadd %mm0,%mm5
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movd 56(%ebx),%mm3
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movd -60(%edx),%mm4
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pfmul %mm2,%mm1
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punpckldq 60(%ebx),%mm3
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punpckldq (%edx),%mm4
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pfadd %mm1,%mm5
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addl $-128,%edx
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addl $-64,%ebx
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movd (%ebx),%mm0
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movd -4(%edx),%mm1
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pfmul %mm4,%mm3
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punpckldq 4(%ebx),%mm0
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punpckldq -8(%edx),%mm1
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pfadd %mm5,%mm3
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pfacc %mm3,%mm3
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incl %ebp
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pxor %mm7,%mm3
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#ifdef ACCURATE_ROUNDING
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pfmin (max_s16),%mm3
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pfmax (min_s16),%mm3
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pfadd (ftoi_magic),%mm3
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#else
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pf2id %mm3,%mm3
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packssdw %mm3,%mm3
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#endif
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movd %mm3,%eax
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movw %ax,(%edi)
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addl $4,%edi
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decl %ecx
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jnz .L46
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femms
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movl %ebp,%eax
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popl %ebx
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popl %esi
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popl %edi
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popl %ebp
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addl $24,%esp
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ret
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NONEXEC_STACK
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