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1 ; | 1 ; |
2 ; jdmrgmmx.asm - merged upsampling/color conversion (MMX) | 2 ; jdmrgmmx.asm - merged upsampling/color conversion (MMX) |
3 ; | 3 ; |
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB | 4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
5 ; | 5 ; |
6 ; Based on | 6 ; Based on |
7 ; x86 SIMD extension for IJG JPEG library | 7 ; x86 SIMD extension for IJG JPEG library |
8 ; Copyright (C) 1999-2006, MIYASAKA Masaru. | 8 ; Copyright (C) 1999-2006, MIYASAKA Masaru. |
9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc | 9 ; For conditions of distribution and use, see copyright notice in jsimdext.inc |
10 ; | 10 ; |
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35 %define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf | 35 %define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf |
36 %define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr | 36 %define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr |
37 %define output_buf(b) (b)+20 ; JSAMPARRAY output_buf | 37 %define output_buf(b) (b)+20 ; JSAMPARRAY output_buf |
38 | 38 |
39 %define original_ebp ebp+0 | 39 %define original_ebp ebp+0 |
40 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] | 40 %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM] |
41 %define WK_NUM 3 | 41 %define WK_NUM 3 |
42 %define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr | 42 %define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr |
43 | 43 |
44 align 16 | 44 align 16 |
45 » global» EXTN(jsimd_h2v1_merged_upsample_mmx) | 45 » global» EXTN(jsimd_h2v1_merged_upsample_mmx) PRIVATE |
46 | 46 |
47 EXTN(jsimd_h2v1_merged_upsample_mmx): | 47 EXTN(jsimd_h2v1_merged_upsample_mmx): |
48 push ebp | 48 push ebp |
49 mov eax,esp ; eax = original ebp | 49 mov eax,esp ; eax = original ebp |
50 sub esp, byte 4 | 50 sub esp, byte 4 |
51 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits | 51 and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits |
52 mov [esp],eax | 52 mov [esp],eax |
53 mov ebp,esp ; ebp = aligned ebp | 53 mov ebp,esp ; ebp = aligned ebp |
54 lea esp, [wk(0)] | 54 lea esp, [wk(0)] |
55 pushpic eax ; make a room for GOT address | 55 pushpic eax ; make a room for GOT address |
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404 ; JDIMENSION in_row_group_ctr, | 404 ; JDIMENSION in_row_group_ctr, |
405 ; JSAMPARRAY output_buf); | 405 ; JSAMPARRAY output_buf); |
406 ; | 406 ; |
407 | 407 |
408 %define output_width(b) (b)+8 ; JDIMENSION output_width | 408 %define output_width(b) (b)+8 ; JDIMENSION output_width |
409 %define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf | 409 %define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf |
410 %define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr | 410 %define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr |
411 %define output_buf(b) (b)+20 ; JSAMPARRAY output_buf | 411 %define output_buf(b) (b)+20 ; JSAMPARRAY output_buf |
412 | 412 |
413 align 16 | 413 align 16 |
414 » global» EXTN(jsimd_h2v2_merged_upsample_mmx) | 414 » global» EXTN(jsimd_h2v2_merged_upsample_mmx) PRIVATE |
415 | 415 |
416 EXTN(jsimd_h2v2_merged_upsample_mmx): | 416 EXTN(jsimd_h2v2_merged_upsample_mmx): |
417 push ebp | 417 push ebp |
418 mov ebp,esp | 418 mov ebp,esp |
419 push ebx | 419 push ebx |
420 ; push ecx ; need not be preserved | 420 ; push ecx ; need not be preserved |
421 ; push edx ; need not be preserved | 421 ; push edx ; need not be preserved |
422 push esi | 422 push esi |
423 push edi | 423 push edi |
424 | 424 |
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457 pop esi | 457 pop esi |
458 ; pop edx ; need not be preserved | 458 ; pop edx ; need not be preserved |
459 ; pop ecx ; need not be preserved | 459 ; pop ecx ; need not be preserved |
460 pop ebx | 460 pop ebx |
461 pop ebp | 461 pop ebp |
462 ret | 462 ret |
463 | 463 |
464 ; For some reason, the OS X linker does not honor the request to align the | 464 ; For some reason, the OS X linker does not honor the request to align the |
465 ; segment unless we do this. | 465 ; segment unless we do this. |
466 align 16 | 466 align 16 |
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