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33e963e7af
2000-01-05 Owen Taylor <otaylor@redhat.com> * gdk-pixbuf/pixops/: Directory full of pixel data scaling code that will eventually migrate into libart. * configure.in acconfig.h: Add checks for MMX compiler support * gdk-pixbuf/gdk-pixbuf.h gdk-pixbuf/gdk-pixbuf-scale.c: Nice wrapper routines for the code in pixops that operate on pixbufs instead of raw data. * gdk-pixbuf/testpixbuf-scale: Test program for scaling routines.
209 lines
3.2 KiB
ArmAsm
209 lines
3.2 KiB
ArmAsm
.file "composite_line_22_4a4_mmx.S"
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.version "01.01"
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gcc2_compiled.:
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.text
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.align 16
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.globl pixops_composite_line_22_4a4_mmx
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.type pixops_composite_line_22_4a4_mmx,@function
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/*
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* Arguments
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*
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* weights: 8(%ebp)
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* p: 12(%ebp) %esi
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* q1: 16(%ebp)
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* q2: 20(%ebp)
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* xstep: 24(%ebp)
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* p_end: 28(%ebp)
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* xinit: 32(%ebp)
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*
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*/
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pixops_composite_line_22_4a4_mmx:
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/*
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* Function call entry
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*/
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pushl %ebp
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movl %esp,%ebp
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subl $28,%esp
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pushl %edi
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pushl %esi
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pushl %ebx
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/* Locals:
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* int x %ebx
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* int x_scaled -24(%ebp)
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*/
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/*
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* Setup
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*/
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/* Initialize variables */
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movl 32(%ebp),%ebx
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movl 32(%ebp),%edx
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sarl $16,%edx
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movl 12(%ebp),%esi
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movl %edx,-24(%ebp)
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cmpl %esi,28(%ebp)
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je .out
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/* Load initial values into %mm1, %mm3 */
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shll $2, %edx
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pxor %mm4, %mm4
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movl 16(%ebp),%edi
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movl (%edi, %edx), %eax
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movd (%edi, %edx), %mm5
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punpcklbw %mm4, %mm5
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shrl $24, %eax
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movl $0x010101, %ecx
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mull %ecx
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orl $0xff000000, %eax
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movd %eax, %mm1
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punpcklbw %mm4, %mm1
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pmullw %mm5,%mm1
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movl -24(%ebp),%edx
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shll $2, %edx
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movl 20(%ebp),%edi
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movl (%edi, %edx), %eax
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movd (%edi, %edx), %mm5
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punpcklbw %mm4, %mm5
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shrl $24, %eax
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movl $0x010101, %ecx
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mull %ecx
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orl $0xff000000, %eax
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movd %eax, %mm3
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punpcklbw %mm4, %mm3
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pmullw %mm5,%mm3
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psrlw $8,%mm1
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psrlw $8,%mm3
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addl $65536,%ebx
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movl %ebx,%edx
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sarl $16,%edx
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jmp .newx
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.p2align 4,,7
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.loop:
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/* int x_index = (x & 0xf000) >> 12 */
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movl %ebx,%eax
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andl $0xf000,%eax
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shrl $7,%eax
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movq (%edi,%eax),%mm4
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pmullw %mm0,%mm4
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movq 8(%edi,%eax),%mm5
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pmullw %mm1,%mm5
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movq 16(%edi,%eax),%mm6
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movq 24(%edi,%eax),%mm7
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pmullw %mm2,%mm6
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pmullw %mm3,%mm7
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paddw %mm4, %mm5
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paddw %mm6, %mm7
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paddw %mm5, %mm7
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movl $0xffff,%ecx
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movd %ecx,%mm4
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psllq $48,%mm4
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movq %mm4,%mm6
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psubw %mm7,%mm4
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pand %mm6,%mm4
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movq %mm4,%mm5
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psrlq $16,%mm4
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por %mm4,%mm5
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psrlq $32,%mm5
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por %mm4,%mm5
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psrlw $8,%mm5
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movd (%esi),%mm7
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pxor %mm4,%mm4
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punpcklbw %mm4, %mm7
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pmullw %mm7,%mm5
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/* x += x_step; */
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addl 24(%ebp),%ebx
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/* x_scale = x >> 16; */
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movl %ebx,%edx
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sarl $16,%edx
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paddw %mm5,%mm6
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psrlw $8,%mm6
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packuswb %mm6, %mm6
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movd %mm6,(%esi)
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addl $4, %esi
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cmpl %esi,28(%ebp)
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je .out
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cmpl %edx,-24(%ebp)
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je .loop
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.newx:
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movl %edx,-24(%ebp)
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/*
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* Load the two new values into %mm1, %mm3, move old values into %mm0, %mm2
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*/
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movq %mm1, %mm0
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movq %mm3, %mm2
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shll $2, %edx
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# %mm4 will always be already clear here
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# pxor %mm4, %mm4
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movl 16(%ebp),%edi
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movl (%edi, %edx), %eax
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movd (%edi, %edx), %mm5
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punpcklbw %mm4, %mm5
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shrl $24, %eax
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movl $0x010101, %ecx
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mull %ecx
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/*
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* mull destroyed %edx, need to reconstitute
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*/
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movl -24(%ebp),%edx
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shll $2, %edx
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orl $0xff000000, %eax
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movd %eax, %mm1
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punpcklbw %mm4, %mm1
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pmullw %mm5,%mm1
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movl 20(%ebp),%edi
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movl (%edi, %edx), %eax
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movd (%edi, %edx), %mm5
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punpcklbw %mm4, %mm5
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shrl $24, %eax
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movl $0x010101, %ecx
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mull %ecx
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orl $0xff000000, %eax
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movd %eax, %mm3
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punpcklbw %mm4, %mm3
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pmullw %mm5,%mm3
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psrlw $8,%mm1
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psrlw $8,%mm3
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movl 8(%ebp),%edi
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jmp .loop
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.out:
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movl %esi,%eax
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emms
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leal -40(%ebp),%esp
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popl %ebx
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popl %esi
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popl %edi
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movl %ebp,%esp
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popl %ebp
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ret
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