From 807c6931fe683fd844ceec1b023232181e6aae03 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 28 Dec 2010 16:10:20 +0000 Subject: xserver and mesa git update 28-12-2010 --- mesalib/src/mesa/x86/read_rgba_span_x86.S | 678 ++++++++++++++++++++++++++++++ 1 file changed, 678 insertions(+) create mode 100644 mesalib/src/mesa/x86/read_rgba_span_x86.S (limited to 'mesalib/src/mesa/x86/read_rgba_span_x86.S') diff --git a/mesalib/src/mesa/x86/read_rgba_span_x86.S b/mesalib/src/mesa/x86/read_rgba_span_x86.S new file mode 100644 index 000000000..cd7596026 --- /dev/null +++ b/mesalib/src/mesa/x86/read_rgba_span_x86.S @@ -0,0 +1,678 @@ +/* + * (C) Copyright IBM Corporation 2004 + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/** + * \file read_rgba_span_x86.S + * Optimized routines to transfer pixel data from the framebuffer to a + * buffer in main memory. + * + * \author Ian Romanick + */ + + .file "read_rgba_span_x86.S" +#if !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__) /* this one cries for assyntax.h */ +/* Kevin F. Quinn 2nd July 2006 + * Replaced data segment constants with text-segment instructions. + */ +#define LOAD_MASK(mvins,m1,m2) \ + pushl $0xff00ff00 ;\ + pushl $0xff00ff00 ;\ + pushl $0xff00ff00 ;\ + pushl $0xff00ff00 ;\ + mvins (%esp), m1 ;\ + pushl $0x00ff0000 ;\ + pushl $0x00ff0000 ;\ + pushl $0x00ff0000 ;\ + pushl $0x00ff0000 ;\ + mvins (%esp), m2 ;\ + addl $32, %esp + +/* I implemented these as macros because they appear in several places, + * and I've tweaked them a number of times. I got tired of changing every + * place they appear. :) + */ + +#define DO_ONE_PIXEL() \ + movl (%ebx), %eax ; \ + addl $4, %ebx ; \ + bswap %eax /* ARGB -> BGRA */ ; \ + rorl $8, %eax /* BGRA -> ABGR */ ; \ + movl %eax, (%ecx) /* ABGR -> R, G, B, A */ ; \ + addl $4, %ecx + +#define DO_ONE_LAST_PIXEL() \ + movl (%ebx), %eax ; \ + bswap %eax /* ARGB -> BGRA */ ; \ + rorl $8, %eax /* BGRA -> ABGR */ ; \ + movl %eax, (%ecx) /* ABGR -> R, G, B, A */ ; \ + + +/** + * MMX optimized version of the BGRA8888_REV to RGBA copy routine. + * + * \warning + * This function assumes that the caller will issue the EMMS instruction + * at the correct places. + */ + +.globl _generic_read_RGBA_span_BGRA8888_REV_MMX +.hidden _generic_read_RGBA_span_BGRA8888_REV_MMX + .type _generic_read_RGBA_span_BGRA8888_REV_MMX, @function +_generic_read_RGBA_span_BGRA8888_REV_MMX: + pushl %ebx + +#ifdef USE_INNER_EMMS + emms +#endif + LOAD_MASK(movq,%mm1,%mm2) + + movl 8(%esp), %ebx /* source pointer */ + movl 16(%esp), %edx /* number of pixels to copy */ + movl 12(%esp), %ecx /* destination pointer */ + + testl %edx, %edx + jle .L20 /* Bail if there's nothing to do. */ + + movl %ebx, %eax + + negl %eax + sarl $2, %eax + andl $1, %eax + je .L17 + + subl %eax, %edx + DO_ONE_PIXEL() +.L17: + + /* Would it be faster to unroll this loop once and process 4 pixels + * per pass, instead of just two? + */ + + movl %edx, %eax + shrl %eax + jmp .L18 +.L19: + movq (%ebx), %mm0 + addl $8, %ebx + + /* These 9 instructions do what PSHUFB (if there were such an + * instruction) could do in 1. :( + */ + + movq %mm0, %mm3 + movq %mm0, %mm4 + + pand %mm2, %mm3 + psllq $16, %mm4 + psrlq $16, %mm3 + pand %mm2, %mm4 + + pand %mm1, %mm0 + por %mm4, %mm3 + por %mm3, %mm0 + + movq %mm0, (%ecx) + addl $8, %ecx + subl $1, %eax +.L18: + jne .L19 + +#ifdef USE_INNER_EMMS + emms +#endif + + /* At this point there are either 1 or 0 pixels remaining to be + * converted. Convert the last pixel, if needed. + */ + + testl $1, %edx + je .L20 + + DO_ONE_LAST_PIXEL() + +.L20: + popl %ebx + ret + .size _generic_read_RGBA_span_BGRA8888_REV_MMX, .-_generic_read_RGBA_span_BGRA8888_REV_MMX + + +/** + * SSE optimized version of the BGRA8888_REV to RGBA copy routine. SSE + * instructions are only actually used to read data from the framebuffer. + * In practice, the speed-up is pretty small. + * + * \todo + * Do some more testing and determine if there's any reason to have this + * function in addition to the MMX version. + * + * \warning + * This function assumes that the caller will issue the EMMS instruction + * at the correct places. + */ + +.globl _generic_read_RGBA_span_BGRA8888_REV_SSE +.hidden _generic_read_RGBA_span_BGRA8888_REV_SSE + .type _generic_read_RGBA_span_BGRA8888_REV_SSE, @function +_generic_read_RGBA_span_BGRA8888_REV_SSE: + pushl %esi + pushl %ebx + pushl %ebp + +#ifdef USE_INNER_EMMS + emms +#endif + + LOAD_MASK(movq,%mm1,%mm2) + + movl 16(%esp), %ebx /* source pointer */ + movl 24(%esp), %edx /* number of pixels to copy */ + movl 20(%esp), %ecx /* destination pointer */ + + testl %edx, %edx + jle .L35 /* Bail if there's nothing to do. */ + + movl %esp, %ebp + subl $16, %esp + andl $0xfffffff0, %esp + + movl %ebx, %eax + movl %edx, %esi + + negl %eax + andl $15, %eax + sarl $2, %eax + cmpl %edx, %eax + cmovle %eax, %esi + + subl %esi, %edx + + testl $1, %esi + je .L32 + + DO_ONE_PIXEL() +.L32: + + testl $2, %esi + je .L31 + + movq (%ebx), %mm0 + addl $8, %ebx + + movq %mm0, %mm3 + movq %mm0, %mm4 + + pand %mm2, %mm3 + psllq $16, %mm4 + psrlq $16, %mm3 + pand %mm2, %mm4 + + pand %mm1, %mm0 + por %mm4, %mm3 + por %mm3, %mm0 + + movq %mm0, (%ecx) + addl $8, %ecx +.L31: + + movl %edx, %eax + shrl $2, %eax + jmp .L33 +.L34: + movaps (%ebx), %xmm0 + addl $16, %ebx + + /* This would be so much better if we could just move directly from + * an SSE register to an MMX register. Unfortunately, that + * functionality wasn't introduced until SSE2 with the MOVDQ2Q + * instruction. + */ + + movaps %xmm0, (%esp) + movq (%esp), %mm0 + movq 8(%esp), %mm5 + + movq %mm0, %mm3 + movq %mm0, %mm4 + movq %mm5, %mm6 + movq %mm5, %mm7 + + pand %mm2, %mm3 + pand %mm2, %mm6 + + psllq $16, %mm4 + psllq $16, %mm7 + + psrlq $16, %mm3 + psrlq $16, %mm6 + + pand %mm2, %mm4 + pand %mm2, %mm7 + + pand %mm1, %mm0 + pand %mm1, %mm5 + + por %mm4, %mm3 + por %mm7, %mm6 + + por %mm3, %mm0 + por %mm6, %mm5 + + movq %mm0, (%ecx) + movq %mm5, 8(%ecx) + addl $16, %ecx + + subl $1, %eax +.L33: + jne .L34 + +#ifdef USE_INNER_EMMS + emms +#endif + movl %ebp, %esp + + /* At this point there are either [0, 3] pixels remaining to be + * converted. + */ + + testl $2, %edx + je .L36 + + movq (%ebx), %mm0 + addl $8, %ebx + + movq %mm0, %mm3 + movq %mm0, %mm4 + + pand %mm2, %mm3 + psllq $16, %mm4 + psrlq $16, %mm3 + pand %mm2, %mm4 + + pand %mm1, %mm0 + por %mm4, %mm3 + por %mm3, %mm0 + + movq %mm0, (%ecx) + addl $8, %ecx +.L36: + + testl $1, %edx + je .L35 + + DO_ONE_LAST_PIXEL() +.L35: + popl %ebp + popl %ebx + popl %esi + ret + .size _generic_read_RGBA_span_BGRA8888_REV_SSE, .-_generic_read_RGBA_span_BGRA8888_REV_SSE + + +/** + * SSE2 optimized version of the BGRA8888_REV to RGBA copy routine. + */ + + .text +.globl _generic_read_RGBA_span_BGRA8888_REV_SSE2 +.hidden _generic_read_RGBA_span_BGRA8888_REV_SSE2 + .type _generic_read_RGBA_span_BGRA8888_REV_SSE2, @function +_generic_read_RGBA_span_BGRA8888_REV_SSE2: + pushl %esi + pushl %ebx + + LOAD_MASK(movdqu,%xmm1,%xmm2) + + movl 12(%esp), %ebx /* source pointer */ + movl 20(%esp), %edx /* number of pixels to copy */ + movl 16(%esp), %ecx /* destination pointer */ + + movl %ebx, %eax + movl %edx, %esi + + testl %edx, %edx + jle .L46 /* Bail if there's nothing to do. */ + + /* If the source pointer isn't a multiple of 16 we have to process + * a few pixels the "slow" way to get the address aligned for + * the SSE fetch intsructions. + */ + + negl %eax + andl $15, %eax + sarl $2, %eax + + cmpl %edx, %eax + cmovbe %eax, %esi + subl %esi, %edx + + testl $1, %esi + je .L41 + + DO_ONE_PIXEL() +.L41: + testl $2, %esi + je .L40 + + movq (%ebx), %xmm0 + addl $8, %ebx + + movdqa %xmm0, %xmm3 + movdqa %xmm0, %xmm4 + andps %xmm1, %xmm0 + + andps %xmm2, %xmm3 + pslldq $2, %xmm4 + psrldq $2, %xmm3 + andps %xmm2, %xmm4 + + orps %xmm4, %xmm3 + orps %xmm3, %xmm0 + + movq %xmm0, (%ecx) + addl $8, %ecx +.L40: + + /* Would it be worth having a specialized version of this loop for + * the case where the destination is 16-byte aligned? That version + * would be identical except that it could use movedqa instead of + * movdqu. + */ + + movl %edx, %eax + shrl $2, %eax + jmp .L42 +.L43: + movdqa (%ebx), %xmm0 + addl $16, %ebx + + movdqa %xmm0, %xmm3 + movdqa %xmm0, %xmm4 + andps %xmm1, %xmm0 + + andps %xmm2, %xmm3 + pslldq $2, %xmm4 + psrldq $2, %xmm3 + andps %xmm2, %xmm4 + + orps %xmm4, %xmm3 + orps %xmm3, %xmm0 + + movdqu %xmm0, (%ecx) + addl $16, %ecx + subl $1, %eax +.L42: + jne .L43 + + + /* There may be upto 3 pixels remaining to be copied. Take care + * of them now. We do the 2 pixel case first because the data + * will be aligned. + */ + + testl $2, %edx + je .L47 + + movq (%ebx), %xmm0 + addl $8, %ebx + + movdqa %xmm0, %xmm3 + movdqa %xmm0, %xmm4 + andps %xmm1, %xmm0 + + andps %xmm2, %xmm3 + pslldq $2, %xmm4 + psrldq $2, %xmm3 + andps %xmm2, %xmm4 + + orps %xmm4, %xmm3 + orps %xmm3, %xmm0 + + movq %xmm0, (%ecx) + addl $8, %ecx +.L47: + + testl $1, %edx + je .L46 + + DO_ONE_LAST_PIXEL() +.L46: + + popl %ebx + popl %esi + ret + .size _generic_read_RGBA_span_BGRA8888_REV_SSE2, .-_generic_read_RGBA_span_BGRA8888_REV_SSE2 + + + +#define MASK_565_L 0x07e0f800 +#define MASK_565_H 0x0000001f +/* Setting SCALE_ADJUST to 5 gives a perfect match with the + * classic C implementation in Mesa. Setting SCALE_ADJUST + * to 0 is slightly faster but at a small cost to accuracy. + */ +#define SCALE_ADJUST 5 +#if SCALE_ADJUST == 5 +#define PRESCALE_L 0x00100001 +#define PRESCALE_H 0x00000200 +#define SCALE_L 0x40C620E8 +#define SCALE_H 0x0000839d +#elif SCALE_ADJUST == 0 +#define PRESCALE_L 0x00200001 +#define PRESCALE_H 0x00000800 +#define SCALE_L 0x01040108 +#define SCALE_H 0x00000108 +#else +#error SCALE_ADJUST must either be 5 or 0. +#endif +#define ALPHA_L 0x00000000 +#define ALPHA_H 0x00ff0000 + +/** + * MMX optimized version of the RGB565 to RGBA copy routine. + */ + + .text + .globl _generic_read_RGBA_span_RGB565_MMX + .hidden _generic_read_RGBA_span_RGB565_MMX + .type _generic_read_RGBA_span_RGB565_MMX, @function + +_generic_read_RGBA_span_RGB565_MMX: + +#ifdef USE_INNER_EMMS + emms +#endif + + movl 4(%esp), %eax /* source pointer */ + movl 8(%esp), %edx /* destination pointer */ + movl 12(%esp), %ecx /* number of pixels to copy */ + + pushl $MASK_565_H + pushl $MASK_565_L + movq (%esp), %mm5 + pushl $PRESCALE_H + pushl $PRESCALE_L + movq (%esp), %mm6 + pushl $SCALE_H + pushl $SCALE_L + movq (%esp), %mm7 + pushl $ALPHA_H + pushl $ALPHA_L + movq (%esp), %mm3 + addl $32,%esp + + sarl $2, %ecx + jl .L01 /* Bail early if the count is negative. */ + jmp .L02 + +.L03: + /* Fetch 4 RGB565 pixels into %mm4. Distribute the first and + * second pixels into the four words of %mm0 and %mm2. + */ + + movq (%eax), %mm4 + addl $8, %eax + + pshufw $0x00, %mm4, %mm0 + pshufw $0x55, %mm4, %mm2 + + + /* Mask the pixels so that each word of each register contains only + * one color component. + */ + + pand %mm5, %mm0 + pand %mm5, %mm2 + + + /* Adjust the component values so that they are as small as possible, + * but large enough so that we can multiply them by an unsigned 16-bit + * number and get a value as large as 0x00ff0000. + */ + + pmullw %mm6, %mm0 + pmullw %mm6, %mm2 +#if SCALE_ADJUST > 0 + psrlw $SCALE_ADJUST, %mm0 + psrlw $SCALE_ADJUST, %mm2 +#endif + + /* Scale the input component values to be on the range + * [0, 0x00ff0000]. This it the real magic of the whole routine. + */ + + pmulhuw %mm7, %mm0 + pmulhuw %mm7, %mm2 + + + /* Always set the alpha value to 0xff. + */ + + por %mm3, %mm0 + por %mm3, %mm2 + + + /* Pack the 16-bit values to 8-bit values and store the converted + * pixel data. + */ + + packuswb %mm2, %mm0 + movq %mm0, (%edx) + addl $8, %edx + + pshufw $0xaa, %mm4, %mm0 + pshufw $0xff, %mm4, %mm2 + + pand %mm5, %mm0 + pand %mm5, %mm2 + pmullw %mm6, %mm0 + pmullw %mm6, %mm2 +#if SCALE_ADJUST > 0 + psrlw $SCALE_ADJUST, %mm0 + psrlw $SCALE_ADJUST, %mm2 +#endif + pmulhuw %mm7, %mm0 + pmulhuw %mm7, %mm2 + + por %mm3, %mm0 + por %mm3, %mm2 + + packuswb %mm2, %mm0 + + movq %mm0, (%edx) + addl $8, %edx + + subl $1, %ecx +.L02: + jne .L03 + + + /* At this point there can be at most 3 pixels left to process. If + * there is either 2 or 3 left, process 2. + */ + + movl 12(%esp), %ecx + testl $0x02, %ecx + je .L04 + + movd (%eax), %mm4 + addl $4, %eax + + pshufw $0x00, %mm4, %mm0 + pshufw $0x55, %mm4, %mm2 + + pand %mm5, %mm0 + pand %mm5, %mm2 + pmullw %mm6, %mm0 + pmullw %mm6, %mm2 +#if SCALE_ADJUST > 0 + psrlw $SCALE_ADJUST, %mm0 + psrlw $SCALE_ADJUST, %mm2 +#endif + pmulhuw %mm7, %mm0 + pmulhuw %mm7, %mm2 + + por %mm3, %mm0 + por %mm3, %mm2 + + packuswb %mm2, %mm0 + + movq %mm0, (%edx) + addl $8, %edx + +.L04: + /* At this point there can be at most 1 pixel left to process. + * Process it if needed. + */ + + testl $0x01, %ecx + je .L01 + + movzxw (%eax), %ecx + movd %ecx, %mm4 + + pshufw $0x00, %mm4, %mm0 + + pand %mm5, %mm0 + pmullw %mm6, %mm0 +#if SCALE_ADJUST > 0 + psrlw $SCALE_ADJUST, %mm0 +#endif + pmulhuw %mm7, %mm0 + + por %mm3, %mm0 + + packuswb %mm0, %mm0 + + movd %mm0, (%edx) + +.L01: +#ifdef USE_INNER_EMMS + emms +#endif + ret +#endif /* !defined(__DJGPP__) && !defined(__MINGW32__) && !defined(__APPLE__) */ + +#if defined (__ELF__) && defined (__linux__) + .section .note.GNU-stack,"",%progbits +#endif -- cgit v1.2.3