/* [<][>][^][v][top][bottom][index][help] */
#include <config.h>
#include "asm.h"
#ifdef DO_MMX_ASM
/*\
|*| MMX assembly scaling routine for Imlib2
|*| Written by Willem Monsuwe <willem@stack.nl>
\*/
.text
.align 8
FN_(imlib_Scale_mmx_AARGBA)
/*\ Prototype: __imlib_Scale_mmx_AARGBA(ImlibScaleInfo *isi, DATA32 *dest,
|*| int dxx, int dyy, int dx, int dy, int dw, int dh, int dow, int sow)
\*/
#define isi 8(%ebp)
#define dest 12(%ebp)
#define dxx 16(%ebp)
#define dyy 20(%ebp)
#define dx 24(%ebp)
#define dy 28(%ebp)
#define dw 32(%ebp)
#define dh 36(%ebp)
#define dow 40(%ebp)
#define sow 44(%ebp)
/*\ Local variables that didn't fit in registers \*/
#define y -4(%ebp)
#define yp -8(%ebp)
#define yap -12(%ebp)
#define xp -16(%ebp)
#define xap -20(%ebp)
#define Cx -24(%ebp)
#define Mx -28(%ebp)
#define Cy -32(%ebp)
#define My -36(%ebp)
#define sow_4 -40(%ebp)
/*\ When %edx points to ImlibScaleInfo, these are the members \*/
#define xpoints (%edx)
#define ypoints 4(%edx)
#define xapoints 8(%edx)
#define yapoints 12(%edx)
#define xup_yup 16(%edx)
PR_(imlib_Scale_mmx_AARGBA):
pushl %ebp
movl %esp, %ebp
subl $40, %esp
pushl %ebx
pushl %ecx
pushl %edx
pushl %edi
pushl %esi
movl isi, %edx
/*\ Check (dw > 0) && (dh > 0) \*/
cmpl $0, dw
jle .scale_leave
cmpl $0, dh
jle .scale_leave
/*\ X-based array pointers point to the end; we're looping up to 0 \*/
/*\ %edi = dest + dow * dy + dx + dw \*/
movl dow, %eax
imull dy, %eax
addl dx, %eax
addl dw, %eax
movl dest, %edi
leal (%edi, %eax, 4), %edi
/*\ xp = xpoints + dxx + dw \*/
movl dxx, %ebx
addl dw, %ebx
movl xpoints, %eax
leal (%eax, %ebx, 4), %eax
movl %eax, xp
/*\ xap = xapoints + dxx + dw \*/
movl xapoints, %eax
leal (%eax, %ebx, 4), %eax
movl %eax, xap
/*\ y = dh \*/
movl dh, %eax
movl %eax, y
/*\ yp = ypoints + dyy \*/
movl dyy, %ebx
movl ypoints, %eax
leal (%eax, %ebx, 4), %eax
movl %eax, yp
/*\ yap = yapoints + dyy \*/
movl yapoints, %eax
leal (%eax, %ebx, 4), %eax
movl %eax, yap
pxor %mm7, %mm7
/*\ Test xup bit \*/
movl xup_yup, %eax
sarl $1, %eax
jnc .scale_x_down
.scale_x_up:
/*\ Test yup bit \*/
sarl $1, %eax
jnc .scale_x_up_y_down
/*\ Scaling up both ways \*/
.scale_x_up_y_up:
movl sow, %ebx
.up_up_loop_y:
/*\ x = -dw \*/
movl dw, %ecx
negl %ecx
/*\ %eax = *yap << 4 \*/
movl yap, %eax
movl (%eax), %eax
sall $4, %eax
jz .up_up_yap_0
movd %eax, %mm1
punpcklwd %mm1, %mm1
punpckldq %mm1, %mm1
.up_up_loop1_x:
/*\ %esi = *yp + xp[x] \*/
movl yp, %eax
movl (%eax), %esi
movl xp, %eax
movl (%eax, %ecx, 4), %eax
leal (%esi, %eax, 4), %esi
/*\ %eax = xap[x] << 4 \*/
movl xap, %eax
movl (%eax, %ecx, 4), %eax
sall $4, %eax
jz .up_up_xap_0
/*\ %mm0 = xap[x] << 4 \*/
movd %eax, %mm0
punpcklwd %mm0, %mm0
punpckldq %mm0, %mm0
/*\ Load and unpack four pixels in parralel
|*| %mm2 = ptr[0], %mm3 = ptr[1]
|*| %mm4 = ptr[sow], %mm5 = ptr[sow + 1]
\*/
movq (%esi), %mm2
movq (%esi, %ebx, 4), %mm4
movq %mm2, %mm3
movq %mm4, %mm5
punpcklbw %mm7, %mm2
punpcklbw %mm7, %mm4
punpckhbw %mm7, %mm3
punpckhbw %mm7, %mm5
/*\ X interpolation: r = l + (r - l) * xap \*/
psubw %mm2, %mm3
psubw %mm4, %mm5
psllw $4, %mm3
psllw $4, %mm5
pmulhw %mm0, %mm3
pmulhw %mm0, %mm5
paddw %mm2, %mm3
paddw %mm4, %mm5
/*\ Now %mm3 = I(ptr[0], ptr[1]), %mm5 = I(ptr[sow], ptr[sow + 1]) \*/
jmp .up_up_common
.up_up_xap_0:
/*\ Load and unpack two pixels
|*| %mm3 = ptr[0], %mm5 = ptr[sow]
\*/
movd (%esi), %mm3
movd (%esi, %ebx, 4), %mm5
punpcklbw %mm7, %mm3
punpcklbw %mm7, %mm5
.up_up_common:
/*\ Y interpolation: d = u + (d - u) * yap \*/
psubw %mm3, %mm5
psllw $4, %mm5
pmulhw %mm1, %mm5
paddw %mm3, %mm5
packuswb %mm5, %mm5
movd %mm5, (%edi, %ecx, 4)
/*\ while (++x) \*/
incl %ecx
jnz .up_up_loop1_x
jmp .up_up_yap_end
.up_up_yap_0:
.up_up_loop2_x:
/*\ %esi = *yp + xp[x] \*/
movl yp, %eax
movl (%eax), %esi
movl xp, %eax
movl (%eax, %ecx, 4), %eax
leal (%esi, %eax, 4), %esi
/*\ %eax = xap[x] << 4 \*/
movl xap, %eax
movl (%eax, %ecx, 4), %eax
sall $4, %eax
jz .up_up_0
/*\ %mm0 = xap[x] << 4 \*/
movd %eax, %mm0
punpcklwd %mm0, %mm0
punpckldq %mm0, %mm0
/*\ Load and unpack two pixels in parralel
|*| %mm2 = ptr[0], %mm3 = ptr[1]
\*/
movq (%esi), %mm2
movq %mm2, %mm3
punpcklbw %mm7, %mm2
punpckhbw %mm7, %mm3
/*\ X interpolation: r = l + (r - l) * xap \*/
psubw %mm2, %mm3
psllw $4, %mm3
pmulhw %mm0, %mm3
paddw %mm2, %mm3
packuswb %mm3, %mm3
movd %mm3, (%edi, %ecx, 4)
jmp .up_up_1
.up_up_0:
/*\ dptr[x] = *sptr \*/
movl (%esi), %eax
movl %eax, (%edi, %ecx, 4)
.up_up_1:
incl %ecx
jnz .up_up_loop2_x
.up_up_yap_end:
/*\ dptr += dow \*/
movl dow, %eax
leal (%edi, %eax, 4), %edi
/*\ yap++; yp++ \*/
addl $4, yap
addl $4, yp
/*\ while (y--) \*/
decl y
jnz .up_up_loop_y
jmp .scale_leave
/*\ Scaling down vertically \*/
.scale_x_up_y_down:
/*\ sow_4 = sow * 4 \*/
movl sow, %eax
sall $2, %eax
movl %eax, sow_4
.up_down_loop_y:
/*\ Setup My and Cy \*/
movl yap, %eax
movzwl (%eax), %ebx
movl %ebx, My
movzwl 2(%eax), %eax
movl %eax, Cy
/*\ mm4 = Cy \*/
movd %eax, %mm4
punpcklwd %mm4, %mm4
punpckldq %mm4, %mm4
/*\ mm5 = My \*/
movd %ebx, %mm5
punpcklwd %mm5, %mm5
punpckldq %mm5, %mm5
/*\ x = -dw \*/
movl dw, %ecx
negl %ecx
.up_down_loop_x:
/*\ %esi = *yp + xp[x] \*/
movl yp, %eax
movl (%eax), %esi
movl xp, %eax
movl (%eax, %ecx, 4), %eax
leal (%esi, %eax, 4), %esi
movl %esi, %eax
/*\ v = (*p * My) >> 10 \*/
movd (%eax), %mm0
punpcklbw %mm7, %mm0
psllw $6, %mm0
pmulhw %mm5, %mm0
/*\ i = 0x4000 - My \*/
movl $0x4000, %ebx
subl My, %ebx
jbe 5f
jmp 2f
1:
/*\ p += sow; v += (*p * Cy) >> 10 \*/
addl sow_4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm4, %mm1
paddw %mm1, %mm0
/*\ i -= Cy; while (i > Cy) \*/
subl Cy, %ebx
2:
cmpl Cy, %ebx
jg 1b
/*\ mm6 = i \*/
movd %ebx, %mm6
punpcklwd %mm6, %mm6
punpckldq %mm6, %mm6
/*\ p += sow; v += (*p * i) >> 10 \*/
addl sow_4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm6, %mm1
paddw %mm1, %mm0
5:
/*\ %eax = xap[x] << 5 \*/
movl xap, %eax
movl (%eax, %ecx, 4), %eax
sall $5, %eax
jz 6f
/*\ mm3 = xap[x] << 5 \*/
movd %eax, %mm3
punpcklwd %mm3, %mm3
punpckldq %mm3, %mm3
/*\ p + 1 \*/
movl %esi, %eax
addl $4, %eax
/*\ vv = (*p * My) >> 10 \*/
movd (%eax), %mm2
punpcklbw %mm7, %mm2
psllw $6, %mm2
pmulhw %mm5, %mm2
/*\ i = 0x4000 - My \*/
movl $0x4000, %ebx
subl My, %ebx
jbe 5f
jmp 2f
1:
/*\ p += sow; vv += (*p * Cy) >> 10 \*/
addl sow_4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm4, %mm1
paddw %mm1, %mm2
/*\ i -= Cy; while (i > Cy) \*/
subl Cy, %ebx
2:
cmpl Cy, %ebx
jg 1b
/*\ p += sow; v += (*p * i) >> 10 \*/
addl sow_4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm6, %mm1
paddw %mm1, %mm2
5:
/*\ v = v + (vv - v) * xap \*/
psubw %mm0, %mm2
psllw $3, %mm2
pmulhw %mm3, %mm2
paddw %mm2, %mm0
6:
/*\ dest[x] = v >> 4 \*/
psrlw $4, %mm0
packuswb %mm0, %mm0
movd %mm0, (%edi, %ecx, 4)
/*\ while (++x) \*/
incl %ecx
jnz .up_down_loop_x
/*\ dptr += dow \*/
movl dow, %eax
leal (%edi, %eax, 4), %edi
/*\ yap++; yp++ \*/
addl $4, yap
addl $4, yp
/*\ while (y--) \*/
decl y
jnz .up_down_loop_y
jmp .scale_leave
.scale_x_down:
/*\ Test yup bit \*/
sarl $1, %eax
jnc .scale_x_down_y_down
/*\ Scaling down horizontally \*/
.scale_x_down_y_up:
/*\ sow_4 = sow * 4 \*/
movl sow, %eax
sall $2, %eax
movl %eax, sow_4
.down_up_loop_y:
/*\ %eax = *yap << 5 \*/
movl yap, %eax
movl (%eax), %eax
sall $5, %eax
/*\ mm3 = *yap << 5 \*/
movd %eax, %mm3
punpcklwd %mm3, %mm3
punpckldq %mm3, %mm3
/*\ x = -dw \*/
movl dw, %ecx
negl %ecx
.down_up_loop_x:
/*\ %esi = *yp + xp[x] \*/
movl yp, %eax
movl (%eax), %esi
movl xp, %eax
movl (%eax, %ecx, 4), %eax
leal (%esi, %eax, 4), %esi
/*\ Setup Mx and Cx \*/
movl xap, %eax
movzwl (%eax, %ecx, 4), %ebx
movl %ebx, Mx
movzwl 2(%eax, %ecx, 4), %eax
movl %eax, Cx
/*\ mm4 = Cx \*/
movd %eax, %mm4
punpcklwd %mm4, %mm4
punpckldq %mm4, %mm4
/*\ mm5 = Mx \*/
movd %ebx, %mm5
punpcklwd %mm5, %mm5
punpckldq %mm5, %mm5
movl %esi, %eax
/*\ v = (*p * Mx) >> 10 \*/
movd (%eax), %mm0
punpcklbw %mm7, %mm0
psllw $6, %mm0
pmulhw %mm5, %mm0
/*\ i = 0x4000 - Mx \*/
movl $0x4000, %ebx
subl Mx, %ebx
jbe 5f
jmp 2f
1:
/*\ p += sow; v += (*p * Cx) >> 10 \*/
addl $4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm4, %mm1
paddw %mm1, %mm0
/*\ i -= Cx; while (i > Cx) \*/
subl Cx, %ebx
2:
cmpl Cx, %ebx
jg 1b
/*\ mm6 = i \*/
movd %ebx, %mm6
punpcklwd %mm6, %mm6
punpckldq %mm6, %mm6
/*\ p += sow; v += (*p * i) >> 10 \*/
addl $4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm6, %mm1
paddw %mm1, %mm0
5:
movd %mm3, %eax
testl %eax, %eax
jz 6f
/*\ p + sow \*/
movl %esi, %eax
addl sow_4, %eax
/*\ vv = (*p * Mx) >> 10 \*/
movd (%eax), %mm2
punpcklbw %mm7, %mm2
psllw $6, %mm2
pmulhw %mm5, %mm2
/*\ i = 0x4000 - Mx \*/
movl $0x4000, %ebx
subl Mx, %ebx
jbe 5f
jmp 2f
1:
/*\ p += sow; vv += (*p * Cx) >> 10 \*/
addl $4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm4, %mm1
paddw %mm1, %mm2
/*\ i -= Cx; while (i > Cx) \*/
subl Cx, %ebx
2:
cmpl Cx, %ebx
jg 1b
/*\ p += sow; v += (*p * i) >> 10 \*/
addl $4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $6, %mm1
pmulhw %mm6, %mm1
paddw %mm1, %mm2
5:
/*\ v = v + (vv - v) * yap \*/
psubw %mm0, %mm2
psllw $3, %mm2
pmulhw %mm3, %mm2
paddw %mm2, %mm0
6:
/*\ dest[x] = v >> 4 \*/
psrlw $4, %mm0
packuswb %mm0, %mm0
movd %mm0, (%edi, %ecx, 4)
/*\ while (++x) \*/
incl %ecx
jnz .down_up_loop_x
/*\ dptr += dow \*/
movl dow, %eax
leal (%edi, %eax, 4), %edi
/*\ yap++; yp++ \*/
addl $4, yap
addl $4, yp
/*\ while (y--) \*/
decl y
jnz .down_up_loop_y
jmp .scale_leave
/*\ Scaling down both ways \*/
.scale_x_down_y_down:
/*\ sow_4 = sow * 4 \*/
movl sow, %eax
sall $2, %eax
movl %eax, sow_4
.down_down_loop_y:
/*\ Setup My and Cy \*/
movl yap, %eax
movzwl (%eax), %ebx
movl %ebx, My
movzwl 2(%eax), %eax
movl %eax, Cy
/*\ x = -dw \*/
movl dw, %ecx
negl %ecx
.down_down_loop_x:
/*\ %esi = *yp + xp[x] \*/
movl yp, %eax
movl (%eax), %esi
movl xp, %eax
movl (%eax, %ecx, 4), %eax
leal (%esi, %eax, 4), %esi
/*\ Setup Mx and Cx \*/
movl xap, %eax
movzwl (%eax, %ecx, 4), %ebx
movl %ebx, Mx
movzwl 2(%eax, %ecx, 4), %eax
movl %eax, Cx
/*\ mm3 = Cx \*/
movd %eax, %mm3
punpcklwd %mm3, %mm3
punpckldq %mm3, %mm3
/*\ mm5 = Mx \*/
movd %ebx, %mm5
punpcklwd %mm5, %mm5
punpckldq %mm5, %mm5
/*\ p = sptr; v = (*p * Mx) >> 9 \*/
movl %esi, %eax
movd (%eax), %mm0
punpcklbw %mm7, %mm0
psllw $7, %mm0
pmulhw %mm5, %mm0
/*\ i = 0x4000 - Mx \*/
movl $0x4000, %ebx
subl Mx, %ebx
jbe 5f
jmp 2f
1:
/*\ v += (*++p * Cx) >> 9 \*/
addl $4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $7, %mm1
pmulhw %mm3, %mm1
paddw %mm1, %mm0
/*\ i -= Cx; while (i > Cx) \*/
subl Cx, %ebx
2:
cmpl Cx, %ebx
jg 1b
/*\ mm6 = i \*/
movd %ebx, %mm6
punpcklwd %mm6, %mm6
punpckldq %mm6, %mm6
/*\ v += (*++p * i) >> 9 \*/
addl $4, %eax
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $7, %mm1
pmulhw %mm6, %mm1
paddw %mm1, %mm0
5:
/*\ v *= My \*/
movd My, %mm4
punpcklwd %mm4, %mm4
punpckldq %mm4, %mm4
psllw $2, %mm0
pmulhw %mm4, %mm0
/*\ j = 0x4000 - My \*/
movl $0x4000, %edx
subl My, %edx
jbe 6f
jmp 4f
3:
/*\ sptr += sow; p = sptr \*/
addl sow_4, %esi
movl %esi, %eax
/*\ vx = (*p * Mx) >> 9 \*/
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $7, %mm1
pmulhw %mm5, %mm1
/*\ i = 0x4000 - Mx \*/
movl $0x4000, %ebx
subl Mx, %ebx
jbe 5f
jmp 2f
1:
/*\ vx += (*++p * Cx) >> 9 \*/
addl $4, %eax
movd (%eax), %mm2
punpcklbw %mm7, %mm2
psllw $7, %mm2
pmulhw %mm3, %mm2
paddw %mm2, %mm1
/*\ i -= Cx; while (i > Cx) \*/
subl Cx, %ebx
2:
cmpl Cx, %ebx
jg 1b
/*\ vx += (*++p * i) >> 9 \*/
addl $4, %eax
movd (%eax), %mm2
punpcklbw %mm7, %mm2
psllw $7, %mm2
pmulhw %mm6, %mm2
paddw %mm2, %mm1
5:
/*\ v += (vx * Cy) >> 14 \*/
movd Cy, %mm4
punpcklwd %mm4, %mm4
punpckldq %mm4, %mm4
psllw $2, %mm1
pmulhw %mm4, %mm1
paddw %mm1, %mm0
/*\ j -= Cy; while (j > Cy) \*/
subl Cy, %edx
4:
cmpl Cy, %edx
jg 3b
/*\ sptr += sow; p = sptr \*/
addl sow_4, %esi
movl %esi, %eax
/*\ vx = (*p * Mx) >> 9 \*/
movd (%eax), %mm1
punpcklbw %mm7, %mm1
psllw $7, %mm1
pmulhw %mm5, %mm1
/*\ i = 0x4000 - Mx \*/
movl $0x4000, %ebx
subl Mx, %ebx
jbe 5f
jmp 2f
1:
/*\ vx += (*++p * Cx) >> 9 \*/
addl $4, %eax
movd (%eax), %mm2
punpcklbw %mm7, %mm2
psllw $7, %mm2
pmulhw %mm3, %mm2
paddw %mm2, %mm1
/*\ i -= Cx; while (i > Cx) \*/
subl Cx, %ebx
2:
cmpl Cx, %ebx
jg 1b
/*\ vx += (*++p * i) >> 9 \*/
addl $4, %eax
movd (%eax), %mm2
punpcklbw %mm7, %mm2
psllw $7, %mm2
pmulhw %mm6, %mm2
paddw %mm2, %mm1
5:
/*\ v += (vx * j) >> 14 \*/
movd %edx, %mm4
punpcklwd %mm4, %mm4
punpckldq %mm4, %mm4
psllw $2, %mm1
pmulhw %mm4, %mm1
paddw %mm1, %mm0
6:
/*\ dptr[x] = mm0 >> 5 \*/
psrlw $5, %mm0
packuswb %mm0, %mm0
movd %mm0, (%edi, %ecx, 4)
/*\ while (++x) \*/
incl %ecx
jnz .down_down_loop_x
/*\ dptr += dow \*/
movl dow, %eax
leal (%edi, %eax, 4), %edi
/*\ yap++; yp++ \*/
addl $4, yap
addl $4, yp
/*\ while (y--) \*/
decl y
jnz .down_down_loop_y
jmp .scale_leave
.scale_leave:
emms
popl %esi
popl %edi
popl %edx
popl %ecx
popl %ebx
movl %ebp, %esp
popl %ebp
ret
SIZE(imlib_Scale_mmx_AARGBA)
#endif
#ifdef __ELF__
.section .note.GNU-stack,"",@progbits
#endif