decode_3dnow.s
来自「mips上编译过的mpg 运行正常 环境：AU12」· S 代码 · 共 281 行
S
281 行
/* decode_3dnow.s - 3DNow! optimized synth_1to1() copyright ?-2007 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 Syuuhei Kashiyama This code based 'decode_3dnow.s' by Syuuhei Kashiyama <squash@mb.kcom.ne.jp>,only two types of changes have been made: - remove PREFETCH instruction for speedup - change function name for support 3DNow! automatic detect - femms moved to before 'call dct64_3dnow' You can find Kashiyama's original 3dnow! support patch (for mpg123-0.59o) at http://user.ecc.u-tokyo.ac.jp/~g810370/linux-simd/ (Japanese). by KIMURA Takuhiro <kim@hannah.ipc.miyakyo-u.ac.jp> - until 31.Mar.1999 <kim@comtec.co.jp> - after 1.Apr.1999 Replacement of synth_1to1() with AMD's 3DNow! SIMD operations support Syuuhei Kashiyama <squash@mb.kcom.ne.jp> The author of this program disclaim whole expressed or implied warranties with regard to this program, and in no event shall the author of this program liable to whatever resulted from the use of this program. Use it at your own risk.*/#include "mangle.h".text.globl ASM_NAME(synth_1to1_3dnow_asm)/* int synth_1to1_3dnow_asm(real *bandPtr, int channel, unsigned char *out, unsigned char *buffs, int *bo, real *decwin); */ASM_NAME(synth_1to1_3dnow_asm): subl $24,%esp pushl %ebp pushl %edi xorl %ebp,%ebp pushl %esi pushl %ebx/* 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 *//* 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 */#define OUT 52(%esp)#define CHANNEL 48(%esp)#define BANDPTR 44(%esp)#define BUFFS 56(%esp)#define BO 60(%esp)#define DECWIN 64(%esp)#define LOCAL0 16(%esp)#define LOCAL1 20(%esp)#define LOCAL5 36(%esp) movl OUT,%esi movl %esi,LOCAL0 /* save buffer start (samples pointer) to another local var */ movl CHANNEL,%ebx movl BO,%esi /* bo address */ movl (%esi),%edx /* bo value */ femms testl %ebx,%ebx jne .L26/* if(!channel) */ decl %edx /* --bo */ andl $15,%edx movl %edx,(%esi) /* save bo */ movl BUFFS,%ecx jmp .L27.L26: /* if(channel) */ addl $2,LOCAL0 /* samples++ */ movl BUFFS,%ecx addl $2176,%ecx.L27:/* edx (and it's lower end) still holds bo value */ testb $1,%dl /* bo & 0x1 */ je .L28 movl %edx,LOCAL5 movl %ecx,%ebx movl BANDPTR,%esi movl %edx,%edi pushl %esi sall $2,%edi movl %ebx,%eax movl %edi,24(%esp) /* LOCAL1, actually */ addl %edi,%eax pushl %eax movl %edx,%eax incl %eax andl $15,%eax leal 1088(,%eax,4),%eax addl %ebx,%eax pushl %eax call ASM_NAME(dct64_3dnow) addl $12,%esp jmp .L29.L28: leal 1(%edx),%esi movl BANDPTR,%edi movl %esi,LOCAL5 leal 1092(%ecx,%edx,4),%eax pushl %edi leal 1088(%ecx),%ebx pushl %eax sall $2,%esi leal (%ecx,%edx,4),%eax pushl %eax call ASM_NAME(dct64_3dnow) addl $12,%esp movl %esi,LOCAL1.L29: movl DECWIN,%edx addl $64,%edx movl $16,%ecx subl LOCAL1,%edx movl LOCAL0,%edi movq (%edx),%mm0 movq (%ebx),%mm1 ALIGN32.L33: movq 8(%edx),%mm3 pfmul %mm1,%mm0 movq 8(%ebx),%mm4 movq 16(%edx),%mm5 pfmul %mm4,%mm3 movq 16(%ebx),%mm6 pfadd %mm3,%mm0 movq 24(%edx),%mm1 pfmul %mm6,%mm5 movq 24(%ebx),%mm2 pfadd %mm5,%mm0 movq 32(%edx),%mm3 pfmul %mm2,%mm1 movq 32(%ebx),%mm4 pfadd %mm1,%mm0 movq 40(%edx),%mm5 pfmul %mm4,%mm3 movq 40(%ebx),%mm6 pfadd %mm3,%mm0 movq 48(%edx),%mm1 pfmul %mm6,%mm5 movq 48(%ebx),%mm2 pfadd %mm0,%mm5 movq 56(%edx),%mm3 pfmul %mm1,%mm2 movq 56(%ebx),%mm4 pfadd %mm5,%mm2 addl $64,%ebx subl $-128,%edx movq (%edx),%mm0 pfmul %mm4,%mm3 movq (%ebx),%mm1 pfadd %mm3,%mm2 movq %mm2,%mm3 psrlq $32,%mm3 pfsub %mm3,%mm2 incl %ebp pf2id %mm2,%mm2 packssdw %mm2,%mm2 movd %mm2,%eax movw %ax,0(%edi) addl $4,%edi decl %ecx jnz .L33 movd (%ebx),%mm0 movd (%edx),%mm1 punpckldq 8(%ebx),%mm0 punpckldq 8(%edx),%mm1 movd 16(%ebx),%mm3 movd 16(%edx),%mm4 pfmul %mm1,%mm0 punpckldq 24(%ebx),%mm3 punpckldq 24(%edx),%mm4 movd 32(%ebx),%mm5 movd 32(%edx),%mm6 pfmul %mm4,%mm3 punpckldq 40(%ebx),%mm5 punpckldq 40(%edx),%mm6 pfadd %mm3,%mm0 movd 48(%ebx),%mm1 movd 48(%edx),%mm2 pfmul %mm6,%mm5 punpckldq 56(%ebx),%mm1 punpckldq 56(%edx),%mm2 pfadd %mm5,%mm0 pfmul %mm2,%mm1 pfadd %mm1,%mm0 pfacc %mm1,%mm0 pf2id %mm0,%mm0 packssdw %mm0,%mm0 movd %mm0,%eax movw %ax,0(%edi) incl %ebp movl LOCAL5,%esi addl $-64,%ebx movl $15,%ebp addl $4,%edi leal -128(%edx,%esi,8),%edx movl $15,%ecx movd (%ebx),%mm0 movd -4(%edx),%mm1 punpckldq 4(%ebx),%mm0 punpckldq -8(%edx),%mm1 ALIGN32.L46: movd 8(%ebx),%mm3 movd -12(%edx),%mm4 pfmul %mm1,%mm0 punpckldq 12(%ebx),%mm3 punpckldq -16(%edx),%mm4 movd 16(%ebx),%mm5 movd -20(%edx),%mm6 pfmul %mm4,%mm3 punpckldq 20(%ebx),%mm5 punpckldq -24(%edx),%mm6 pfadd %mm3,%mm0 movd 24(%ebx),%mm1 movd -28(%edx),%mm2 pfmul %mm6,%mm5 punpckldq 28(%ebx),%mm1 punpckldq -32(%edx),%mm2 pfadd %mm5,%mm0 movd 32(%ebx),%mm3 movd -36(%edx),%mm4 pfmul %mm2,%mm1 punpckldq 36(%ebx),%mm3 punpckldq -40(%edx),%mm4 pfadd %mm1,%mm0 movd 40(%ebx),%mm5 movd -44(%edx),%mm6 pfmul %mm4,%mm3 punpckldq 44(%ebx),%mm5 punpckldq -48(%edx),%mm6 pfadd %mm3,%mm0 movd 48(%ebx),%mm1 movd -52(%edx),%mm2 pfmul %mm6,%mm5 punpckldq 52(%ebx),%mm1 punpckldq -56(%edx),%mm2 pfadd %mm0,%mm5 movd 56(%ebx),%mm3 movd -60(%edx),%mm4 pfmul %mm2,%mm1 punpckldq 60(%ebx),%mm3 punpckldq (%edx),%mm4 pfadd %mm1,%mm5 addl $-128,%edx addl $-64,%ebx movd (%ebx),%mm0 movd -4(%edx),%mm1 pfmul %mm4,%mm3 punpckldq 4(%ebx),%mm0 punpckldq -8(%edx),%mm1 pfadd %mm5,%mm3 pfacc %mm3,%mm3 incl %ebp pf2id %mm3,%mm3 movd %mm3,%eax negl %eax movd %eax,%mm3 packssdw %mm3,%mm3 movd %mm3,%eax movw %ax,(%edi) addl $4,%edi decl %ecx jnz .L46 femms movl %ebp,%eax popl %ebx popl %esi popl %edi popl %ebp addl $24,%esp ret⌨️ 快捷键说明
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