mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-27 00:39:41 +03:00
126 lines
3.2 KiB
ArmAsm
126 lines
3.2 KiB
ArmAsm
/*
|
|
decode_MMX.s: MMX optimized synth
|
|
|
|
copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
|
see COPYING and AUTHORS files in distribution or http://mpg123.org
|
|
initially written by the mysterious higway (apparently)
|
|
|
|
Thomas' words about a note:
|
|
Initially, I found the note "this code comes under GPL" in this file.
|
|
After asking Michael about legal status of the MMX files, he said that he got them without any comment and thus I believe that the GPL comment was made by Michael, since he made mpg123 GPL at some time - and marked some files that way, but not all.
|
|
Based on that thought, I now consider this file along with the other parts of higway's MMX optimization to be licensed under LGPL 2.1 by Michael's decision.
|
|
*/
|
|
|
|
#include "mangle.h"
|
|
|
|
.text
|
|
|
|
.globl ASM_NAME(synth_1to1_MMX)
|
|
/* int synth_1to1_MMX(real *bandPtr, int channel, short *out, short *buffs, int *bo, float *decwins); */
|
|
ASM_NAME(synth_1to1_MMX):
|
|
pushl %ebp
|
|
pushl %edi
|
|
pushl %esi
|
|
pushl %ebx
|
|
/* stack: 0=ebx, 4=esi, 8=edi, 12=ebp, 16=back, 20=bandPtr, 24=channel, 28=out, 32=buffs, 36=bo, 40=decwins */
|
|
movl 24(%esp),%ecx
|
|
movl 28(%esp),%edi
|
|
movl $15,%ebx
|
|
movl 36(%esp),%edx
|
|
leal (%edi,%ecx,2),%edi
|
|
decl %ecx
|
|
movl 32(%esp),%esi
|
|
movl (%edx),%eax
|
|
jecxz .L1
|
|
decl %eax
|
|
andl %ebx,%eax
|
|
leal 1088(%esi),%esi
|
|
movl %eax,(%edx)
|
|
.L1:
|
|
leal (%esi,%eax,2),%edx
|
|
movl %eax,%ebp
|
|
incl %eax
|
|
pushl 20(%esp)
|
|
andl %ebx,%eax
|
|
leal 544(%esi,%eax,2),%ecx
|
|
incl %ebx
|
|
testl $1, %eax
|
|
jnz .L2
|
|
xchgl %edx,%ecx
|
|
incl %ebp
|
|
leal 544(%esi),%esi
|
|
.L2:
|
|
pushl %edx
|
|
pushl %ecx
|
|
call ASM_NAME(dct64_MMX)
|
|
addl $12,%esp
|
|
/* stack like before, pushed 3, incremented again */
|
|
leal 1(%ebx), %ecx
|
|
subl %ebp,%ebx
|
|
pushl %eax
|
|
movl 44(%esp),%eax /* decwins */
|
|
leal (%eax,%ebx,2), %edx
|
|
popl %eax
|
|
.L3:
|
|
movq (%edx),%mm0
|
|
pmaddwd (%esi),%mm0
|
|
movq 8(%edx),%mm1
|
|
pmaddwd 8(%esi),%mm1
|
|
movq 16(%edx),%mm2
|
|
pmaddwd 16(%esi),%mm2
|
|
movq 24(%edx),%mm3
|
|
pmaddwd 24(%esi),%mm3
|
|
paddd %mm1,%mm0
|
|
paddd %mm2,%mm0
|
|
paddd %mm3,%mm0
|
|
movq %mm0,%mm1
|
|
psrlq $32,%mm1
|
|
paddd %mm1,%mm0
|
|
psrad $13,%mm0
|
|
packssdw %mm0,%mm0
|
|
movd %mm0,%eax
|
|
movw %ax, (%edi)
|
|
|
|
leal 32(%esi),%esi
|
|
leal 64(%edx),%edx
|
|
leal 4(%edi),%edi
|
|
loop .L3
|
|
|
|
|
|
subl $64,%esi
|
|
movl $15,%ecx
|
|
.L4:
|
|
movq (%edx),%mm0
|
|
pmaddwd (%esi),%mm0
|
|
movq 8(%edx),%mm1
|
|
pmaddwd 8(%esi),%mm1
|
|
movq 16(%edx),%mm2
|
|
pmaddwd 16(%esi),%mm2
|
|
movq 24(%edx),%mm3
|
|
pmaddwd 24(%esi),%mm3
|
|
paddd %mm1,%mm0
|
|
paddd %mm2,%mm0
|
|
paddd %mm3,%mm0
|
|
movq %mm0,%mm1
|
|
psrlq $32,%mm1
|
|
paddd %mm0,%mm1
|
|
psrad $13,%mm1
|
|
packssdw %mm1,%mm1
|
|
psubd %mm0,%mm0
|
|
psubsw %mm1,%mm0
|
|
movd %mm0,%eax
|
|
movw %ax,(%edi)
|
|
|
|
subl $32,%esi
|
|
addl $64,%edx
|
|
leal 4(%edi),%edi
|
|
loop .L4
|
|
emms
|
|
popl %ebx
|
|
popl %esi
|
|
popl %edi
|
|
popl %ebp
|
|
ret
|
|
|
|
NONEXEC_STACK
|