Cell: some basic blending code

[mesa.git] / src / mesa / x86 / read_rgba_span_x86.S

diff --git a/src/mesa/x86/read_rgba_span_x86.S b/src/mesa/x86/read_rgba_span_x86.S
index 6b8036e5b8d8302359235fd0cfa0c9c0fb8d169a..3cbcd719960e13b7d8739e9cdb8a2404677411fa 100644 (file)
--- a/src/mesa/x86/read_rgba_span_x86.S
+++ b/src/mesa/x86/read_rgba_span_x86.S
@@ -32,6 +32,8 @@
 
        .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
@@ -45,6 +47,19 @@ mask:
        .long   0x00ff0000
        .long   0x00ff0000
        .long   0x00ff0000
+ */
+#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 the appear in quite a few places,
@@ -84,8 +99,12 @@ _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 */
        movl    16(%esp), %edx  /* number of pixels to copy */
@@ -182,8 +201,12 @@ _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 */
        movl    24(%esp), %edx  /* number of pixels to copy */
@@ -341,8 +364,12 @@ _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 */
        movl    20(%esp), %edx  /* number of pixels to copy */
@@ -464,6 +491,10 @@ _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
@@ -510,6 +541,26 @@ scale:
 
 alpha: .long   0x00000000
        .long   0x00ff0000
+#endif
+
+#define MASK_565_L     0x07e0f800
+#define MASK_565_H     0x0000001f
+#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.
@@ -530,9 +581,25 @@ _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
+       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
        jle     .L01            /* Bail early if the count is negative. */
@@ -581,8 +648,13 @@ _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
 
 
        /* Pack the 16-bit values to 8-bit values and store the converted
@@ -609,8 +681,13 @@ _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
 
        packuswb        %mm2, %mm0
 
@@ -647,8 +724,13 @@ _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
 
        packuswb        %mm2, %mm0
 
@@ -675,7 +757,11 @@ _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
 
@@ -687,3 +773,7 @@ _generic_read_RGBA_span_RGB565_MMX:
 #endif
        ret
 #endif /* !defined(__DJGPP__) && !defined(__MINGW32__) */
+       
+#if defined (__ELF__) && defined (__linux__)
+       .section .note.GNU-stack,"",%progbits
+#endif