diff options
| -rw-r--r-- | src/mesa/x86/read_rgba_span_x86.S | 117 |
1 files changed, 7 insertions, 110 deletions
diff --git a/src/mesa/x86/read_rgba_span_x86.S b/src/mesa/x86/read_rgba_span_x86.S index 8509df60049..2e5c3be83fe 100644 --- a/src/mesa/x86/read_rgba_span_x86.S +++ b/src/mesa/x86/read_rgba_span_x86.S @@ -33,20 +33,7 @@ .file "read_rgba_span_x86.S" #if !defined(__DJGPP__) && !defined(__MINGW32__) /* this one cries for assyntax.h */ /* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - .section .rodata - .align 16 - .type mask, @object - .size mask, 32 -mask: - .long 0xff00ff00 - .long 0xff00ff00 - .long 0xff00ff00 - .long 0xff00ff00 - .long 0x00ff0000 - .long 0x00ff0000 - .long 0x00ff0000 - .long 0x00ff0000 + * Replaced data segment constants with text-segment instructions. */ #define LOAD_MASK(mvins,m1,m2) \ pushl $0xff00ff00 ;\ @@ -61,8 +48,7 @@ mask: mvins (%esp), m2 ;\ addl $32, %esp - -/* I implemented these as macros because the appear in quite a few places, +/* 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. :) */ @@ -99,11 +85,6 @@ _generic_read_RGBA_span_BGRA8888_REV_MMX: #ifdef USE_INNER_EMMS emms #endif -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - movq mask, %mm1 - movq mask+16, %mm2 - */ LOAD_MASK(movq,%mm1,%mm2) movl 8(%esp), %ebx /* source pointer */ @@ -201,11 +182,7 @@ _generic_read_RGBA_span_BGRA8888_REV_SSE: #ifdef USE_INNER_EMMS emms #endif -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - movq mask, %mm1 - movq mask+16, %mm2 - */ + LOAD_MASK(movq,%mm1,%mm2) movl 16(%esp), %ebx /* source pointer */ @@ -364,11 +341,6 @@ _generic_read_RGBA_span_BGRA8888_REV_SSE2: pushl %esi pushl %ebx -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - movdqa mask, %xmm1 - movdqa mask+16, %xmm2 - */ LOAD_MASK(movdqu,%xmm1,%xmm2) movl 12(%esp), %ebx /* source pointer */ @@ -491,60 +463,12 @@ _generic_read_RGBA_span_BGRA8888_REV_SSE2: -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - */ -#if 0 - .section .rodata - - .align 16 -mask_565: - .word 0xf800 - .word 0x07e0 - .word 0x001f - .word 0x0000 - -/* 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 -prescale: - .word 0x0001 - .word 0x0010 - .word 0x0200 - .word 0x0000 - -scale: - .word 0x20e8 /* (0x00ff0000 / 0x000007c0) + 1 */ - .word 0x40c5 /* (0x00ff0000 / 0x000003f0) + 1 */ - .word 0x839d /* (0x00ff0000 / 0x000001f0) + 1 */ - .word 0x0000 -#elif SCALE_ADJUST == 0 -prescale: - .word 0x0001 - .word 0x0020 - .word 0x0800 - .word 0x0000 - -scale: - .word 0x0108 /* (0x00ff0000 / 0x0000f800) + 1 */ - .word 0x0104 /* (0x00ff0000 / 0x0000fc00) + 1 */ - .word 0x0108 /* (0x00ff0000 / 0x0000f800) + 1 */ - .word 0x0000 -#else -#error SCALE_ADJUST must either be 5 or 0. -#endif - - -alpha: .long 0x00000000 - .long 0x00ff0000 -#endif - #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 @@ -581,12 +505,6 @@ _generic_read_RGBA_span_RGB565_MMX: movl 8(%esp), %edx /* destination pointer */ movl 12(%esp), %ecx /* number of pixels to copy */ -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - movq mask_565, %mm5 - movq prescale, %mm6 - movq scale, %mm7 - */ pushl $MASK_565_H pushl $MASK_565_L movq (%esp), %mm5 @@ -648,11 +566,6 @@ _generic_read_RGBA_span_RGB565_MMX: /* Always set the alpha value to 0xff. */ -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - por alpha, %mm0 - por alpha, %mm2 - */ por %mm3, %mm0 por %mm3, %mm2 @@ -665,8 +578,6 @@ _generic_read_RGBA_span_RGB565_MMX: movq %mm0, (%edx) addl $8, %edx - - pshufw $0xaa, %mm4, %mm0 pshufw $0xff, %mm4, %mm2 @@ -681,11 +592,6 @@ _generic_read_RGBA_span_RGB565_MMX: pmulhuw %mm7, %mm0 pmulhuw %mm7, %mm2 -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - por alpha, %mm0 - por alpha, %mm2 - */ por %mm3, %mm0 por %mm3, %mm2 @@ -724,11 +630,6 @@ _generic_read_RGBA_span_RGB565_MMX: pmulhuw %mm7, %mm0 pmulhuw %mm7, %mm2 -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - por alpha, %mm0 - por alpha, %mm2 - */ por %mm3, %mm0 por %mm3, %mm2 @@ -757,10 +658,6 @@ _generic_read_RGBA_span_RGB565_MMX: #endif pmulhuw %mm7, %mm0 -/* Kevin F. Quinn 2nd July 2006 - * Replace data segment constants with text-segment instructions - por alpha, %mm0 - */ por %mm3, %mm0 packuswb %mm0, %mm0 |