forked from KolibriOS/kolibrios
247 lines
5.2 KiB
C
247 lines
5.2 KiB
C
/*
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decode_sse3d: Synth for SSE and extended 3DNow (yeah, the name is a relic)
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copyright 2006-2007 by Zuxy Meng/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 the mysterious higway for MMX (apparently)
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then developed into SSE opt by Zuxy Meng, also building on Romain Dolbeau's AltiVec
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Both have agreed to distribution under LGPL 2.1 .
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Transformed back into standalone asm, with help of
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gcc -S -DHAVE_CONFIG_H -I. -march=pentium -O3 -Wall -pedantic -fno-strict-aliasing -DREAL_IS_FLOAT -c -o decode_mmxsse.{S,c}
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The difference between SSE and 3DNowExt is the dct64 function and the synth function name.
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This template here uses the SYNTH_NAME and MPL_DCT64 macros for this - see decode_sse.S and decode_3dnowext.S...
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That's not memory efficient since there's doubled code, but it's easier than giving another function pointer.
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Maybe I'll change it in future, but now I need something that works.
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Original comment from MPlayer source follows:
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*/
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/*
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* this code comes under GPL
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* This code was taken from http://www.mpg123.org
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* See ChangeLog of mpg123-0.59s-pre.1 for detail
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* Applied to mplayer by Nick Kurshev <nickols_k@mail.ru>
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*
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* Local ChangeLog:
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* - Partial loops unrolling and removing MOVW insn from loops
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*/
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#include "mangle.h"
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.data
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ALIGN8
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one_null:
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.long -65536
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.long -65536
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ALIGN8
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null_one:
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.long 65535
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.long 65535
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.text
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ALIGN16
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/* void SYNTH_NAME(real *bandPtr, int channel, short *samples, short *buffs, int *bo, float *decwins) */
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.globl SYNTH_NAME
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SYNTH_NAME:
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pushl %ebp
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/* stack:0=ebp 4=back 8=bandptr 12=channel 16=samples 20=buffs 24=bo 28=decwins */
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movl %esp, %ebp
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/* Now the old stack addresses are preserved via %epb. */
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subl $4,%esp /* What has been called temp before. */
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pushl %edi
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pushl %esi
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pushl %ebx
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#define TEMP 12(%esp)
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/* APP */
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movl 12(%ebp),%ecx
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movl 16(%ebp),%edi
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movl $15,%ebx
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movl 24(%ebp),%edx
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leal (%edi,%ecx,2),%edi
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decl %ecx
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movl 20(%ebp),%esi
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movl (%edx),%eax
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jecxz .L01
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decl %eax
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andl %ebx,%eax
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leal 1088(%esi),%esi
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movl %eax,(%edx)
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.L01:
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leal (%esi,%eax,2),%edx
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movl %eax,TEMP
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incl %eax
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andl %ebx,%eax
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leal 544(%esi,%eax,2),%ecx
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incl %ebx
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testl $1, %eax
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jnz .L02
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xchgl %edx,%ecx
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incl TEMP
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leal 544(%esi),%esi
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.L02:
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pushl 8(%ebp)
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pushl %edx
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pushl %ecx
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call MPL_DCT64
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addl $12, %esp
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leal 1(%ebx), %ecx
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subl TEMP,%ebx
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pushl %ecx
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/* leal ASM_NAME(decwins)(%ebx,%ebx,1), %edx */
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movl 28(%ebp),%ecx
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leal (%ecx,%ebx,2), %edx
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movl (%esp),%ecx /* restore, but leave value on stack */
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shrl $1, %ecx
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ALIGN16
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.L03:
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movq (%edx),%mm0
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movq 64(%edx),%mm4
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pmaddwd (%esi),%mm0
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pmaddwd 32(%esi),%mm4
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movq 8(%edx),%mm1
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movq 72(%edx),%mm5
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pmaddwd 8(%esi),%mm1
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pmaddwd 40(%esi),%mm5
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movq 16(%edx),%mm2
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movq 80(%edx),%mm6
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pmaddwd 16(%esi),%mm2
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pmaddwd 48(%esi),%mm6
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movq 24(%edx),%mm3
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movq 88(%edx),%mm7
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pmaddwd 24(%esi),%mm3
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pmaddwd 56(%esi),%mm7
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paddd %mm1,%mm0
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paddd %mm5,%mm4
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paddd %mm2,%mm0
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paddd %mm6,%mm4
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paddd %mm3,%mm0
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paddd %mm7,%mm4
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movq %mm0,%mm1
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movq %mm4,%mm5
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psrlq $32,%mm1
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psrlq $32,%mm5
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paddd %mm1,%mm0
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paddd %mm5,%mm4
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psrad $13,%mm0
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psrad $13,%mm4
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packssdw %mm0,%mm0
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packssdw %mm4,%mm4
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movq (%edi), %mm1
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punpckldq %mm4, %mm0
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pand one_null, %mm1
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pand null_one, %mm0
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por %mm0, %mm1
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movq %mm1,(%edi)
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leal 64(%esi),%esi
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leal 128(%edx),%edx
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leal 8(%edi),%edi
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decl %ecx
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jnz .L03
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popl %ecx
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andl $1, %ecx
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jecxz .next_loop
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movq (%edx),%mm0
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pmaddwd (%esi),%mm0
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movq 8(%edx),%mm1
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pmaddwd 8(%esi),%mm1
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movq 16(%edx),%mm2
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pmaddwd 16(%esi),%mm2
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movq 24(%edx),%mm3
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pmaddwd 24(%esi),%mm3
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paddd %mm1,%mm0
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paddd %mm2,%mm0
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paddd %mm3,%mm0
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movq %mm0,%mm1
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psrlq $32,%mm1
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paddd %mm1,%mm0
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psrad $13,%mm0
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packssdw %mm0,%mm0
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movd %mm0,%eax
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movw %ax, (%edi)
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leal 32(%esi),%esi
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leal 64(%edx),%edx
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leal 4(%edi),%edi
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.next_loop:
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subl $64,%esi
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movl $7,%ecx
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ALIGN16
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.L04:
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movq (%edx),%mm0
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movq 64(%edx),%mm4
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pmaddwd (%esi),%mm0
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pmaddwd -32(%esi),%mm4
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movq 8(%edx),%mm1
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movq 72(%edx),%mm5
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pmaddwd 8(%esi),%mm1
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pmaddwd -24(%esi),%mm5
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movq 16(%edx),%mm2
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movq 80(%edx),%mm6
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pmaddwd 16(%esi),%mm2
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pmaddwd -16(%esi),%mm6
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movq 24(%edx),%mm3
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movq 88(%edx),%mm7
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pmaddwd 24(%esi),%mm3
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pmaddwd -8(%esi),%mm7
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paddd %mm1,%mm0
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paddd %mm5,%mm4
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paddd %mm2,%mm0
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paddd %mm6,%mm4
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paddd %mm3,%mm0
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paddd %mm7,%mm4
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movq %mm0,%mm1
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movq %mm4,%mm5
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psrlq $32,%mm1
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psrlq $32,%mm5
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paddd %mm0,%mm1
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paddd %mm4,%mm5
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psrad $13,%mm1
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psrad $13,%mm5
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packssdw %mm1,%mm1
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packssdw %mm5,%mm5
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psubd %mm0,%mm0
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psubd %mm4,%mm4
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psubsw %mm1,%mm0
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psubsw %mm5,%mm4
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movq (%edi), %mm1
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punpckldq %mm4, %mm0
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pand one_null, %mm1
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pand null_one, %mm0
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por %mm0, %mm1
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movq %mm1,(%edi)
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subl $64,%esi
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addl $128,%edx
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leal 8(%edi),%edi
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decl %ecx
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jnz .L04
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movq (%edx),%mm0
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pmaddwd (%esi),%mm0
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movq 8(%edx),%mm1
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pmaddwd 8(%esi),%mm1
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movq 16(%edx),%mm2
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pmaddwd 16(%esi),%mm2
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movq 24(%edx),%mm3
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pmaddwd 24(%esi),%mm3
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paddd %mm1,%mm0
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paddd %mm2,%mm0
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paddd %mm3,%mm0
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movq %mm0,%mm1
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psrlq $32,%mm1
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paddd %mm0,%mm1
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psrad $13,%mm1
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packssdw %mm1,%mm1
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psubd %mm0,%mm0
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psubsw %mm1,%mm0
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movd %mm0,%eax
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movw %ax,(%edi)
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emms
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/* NO_APP */
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popl %ebx
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popl %esi
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popl %edi
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addl $4,%esp
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popl %ebp
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ret
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