📄 decode_mmx.s
字号:
# this code comes under GPL.text.globl mpg123_synth_MMXmpg123_synth_MMX: pushl %ebp pushl %edi pushl %esi pushl %ebx 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 dct64_MMX addl $12,%esp leal 1(%ebx), %ecx subl %ebp,%ebx leal mpg123_decwins(%ebx,%ebx,1), %edx.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⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -