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109 lines
2.5 KiB
109 lines
2.5 KiB
15 years ago
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# this code comes under GPL
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.text
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.globl synth_1to1_MMX
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synth_1to1_MMX:
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pushl %ebp
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pushl %edi
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pushl %esi
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pushl %ebx
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movl 24(%esp),%ecx
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movl 28(%esp),%edi
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movl $15,%ebx
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movl 36(%esp),%edx
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leal (%edi,%ecx,2),%edi
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decl %ecx
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movl 32(%esp),%esi
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movl (%edx),%eax
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jecxz .L1
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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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.L1:
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leal (%esi,%eax,2),%edx
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movl %eax,%ebp
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incl %eax
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pushl 20(%esp)
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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 .L2
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xchgl %edx,%ecx
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incl %ebp
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leal 544(%esi),%esi
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.L2:
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pushl %edx
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pushl %ecx
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call dct64_MMX
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addl $12,%esp
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leal 1(%ebx), %ecx
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subl %ebp,%ebx
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leal decwins(%ebx,%ebx,1), %edx
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.L3:
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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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loop .L3
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subl $64,%esi
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movl $15,%ecx
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.L4:
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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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subl $32,%esi
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addl $64,%edx
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leal 4(%edi),%edi
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loop .L4
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emms
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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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ret
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