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1 ; | 1 ; |
2 ; jccolext.asm - colorspace conversion (64-bit SSE2) | 2 ; jccolext.asm - colorspace conversion (64-bit SSE2) |
3 ; | 3 ; |
4 ; x86 SIMD extension for IJG JPEG library | 4 ; x86 SIMD extension for IJG JPEG library |
5 ; Copyright (C) 1999-2006, MIYASAKA Masaru. | 5 ; Copyright (C) 1999-2006, MIYASAKA Masaru. |
6 ; Copyright (C) 2009, D. R. Commander. | 6 ; Copyright (C) 2009, D. R. Commander. |
7 ; For conditions of distribution and use, see copyright notice in jsimdext.inc | 7 ; For conditions of distribution and use, see copyright notice in jsimdext.inc |
8 ; | 8 ; |
9 ; This file should be assembled with NASM (Netwide Assembler), | 9 ; This file should be assembled with NASM (Netwide Assembler), |
10 ; can *not* be assembled with Microsoft's MASM or any compatible | 10 ; can *not* be assembled with Microsoft's MASM or any compatible |
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30 ; r11 = JSAMPARRAY input_buf | 30 ; r11 = JSAMPARRAY input_buf |
31 ; r12 = JSAMPIMAGE output_buf | 31 ; r12 = JSAMPIMAGE output_buf |
32 ; r13 = JDIMENSION output_row | 32 ; r13 = JDIMENSION output_row |
33 ; r14 = int num_rows | 33 ; r14 = int num_rows |
34 | 34 |
35 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] | 35 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] |
36 %define WK_NUM 8 | 36 %define WK_NUM 8 |
37 | 37 |
38 align 16 | 38 align 16 |
39 | 39 |
40 global EXTN(jsimd_rgb_ycc_convert_sse2) | 40 global EXTN(jsimd_rgb_ycc_convert_sse2) PRIVATE |
41 | 41 |
42 EXTN(jsimd_rgb_ycc_convert_sse2): | 42 EXTN(jsimd_rgb_ycc_convert_sse2): |
43 push rbp | 43 push rbp |
44 mov rax,rsp ; rax = original rbp | 44 mov rax,rsp ; rax = original rbp |
45 sub rsp, byte 4 | 45 sub rsp, byte 4 |
46 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits | 46 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits |
47 mov [rsp],rax | 47 mov [rsp],rax |
48 mov rbp,rsp ; rbp = aligned rbp | 48 mov rbp,rsp ; rbp = aligned rbp |
49 lea rsp, [wk(0)] | 49 lea rsp, [wk(0)] |
50 collect_args | 50 collect_args |
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476 pop rbx | 476 pop rbx |
477 uncollect_args | 477 uncollect_args |
478 mov rsp,rbp ; rsp <- aligned rbp | 478 mov rsp,rbp ; rsp <- aligned rbp |
479 pop rsp ; rsp <- original rbp | 479 pop rsp ; rsp <- original rbp |
480 pop rbp | 480 pop rbp |
481 ret | 481 ret |
482 | 482 |
483 ; For some reason, the OS X linker does not honor the request to align the | 483 ; For some reason, the OS X linker does not honor the request to align the |
484 ; segment unless we do this. | 484 ; segment unless we do this. |
485 align 16 | 485 align 16 |
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