1 files changed, 114 insertions, 0 deletions
diff --git a/mesalib/src/mesa/x86/mmx_blendtmp.h b/mesalib/src/mesa/x86/mmx_blendtmp.h
new file mode 100644
index 000000000..f282c0c21
--- /dev/null
+++ b/mesalib/src/mesa/x86/mmx_blendtmp.h
@@ -0,0 +1,114 @@
+/*
+ * Written by José Fonseca <j_r_fonseca@yahoo.co.uk>
+ */
+
+
+/*
+ * void _mesa_mmx_blend( struct gl_context *ctx,
+ *                       GLuint n, 
+ *                       const GLubyte mask[],
+ *                       GLchan rgba[][4], 
+ *                       CONST GLchan dest[][4] )
+ * 
+ */
+ALIGNTEXT16
+GLOBL GLNAME( TAG(_mesa_mmx_blend) )
+HIDDEN( TAG(_mesa_mmx_blend) )
+GLNAME( TAG(_mesa_mmx_blend) ):
+
+    PUSH_L     ( EBP )
+    MOV_L      ( ESP, EBP )
+    PUSH_L     ( ESI )
+    PUSH_L     ( EDI )
+    PUSH_L     ( EBX )
+
+    MOV_L      ( REGOFF(12, EBP), ECX )		/* n */
+    CMP_L      ( CONST(0), ECX)
+    JE         ( LLTAG(GMB_return) )
+
+    MOV_L      ( REGOFF(16, EBP), EBX )		/* mask */
+    MOV_L      ( REGOFF(20, EBP), EDI )         /* rgba */
+    MOV_L      ( REGOFF(24, EBP), ESI )         /* dest */
+
+    INIT
+    
+    TEST_L     ( CONST(4), EDI )		/* align rgba on an 8-byte boundary */
+    JZ         ( LLTAG(GMB_align_end) )
+
+    CMP_B      ( CONST(0), REGIND(EBX) )	/* *mask == 0 */
+    JE         ( LLTAG(GMB_align_continue) )
+
+    /* runin */
+#define ONE(x)	x
+#define TWO(x)  
+    MAIN       ( EDI, ESI )
+#undef ONE
+#undef TWO
+
+LLTAG(GMB_align_continue):
+
+    DEC_L      ( ECX )				/* n -= 1 */
+    INC_L      ( EBX )		                /* mask += 1 */
+    ADD_L      ( CONST(4), EDI )		/* rgba += 1 */
+    ADD_L      ( CONST(4), ESI )		/* dest += 1 */ 
+
+LLTAG(GMB_align_end):
+
+    CMP_L      ( CONST(2), ECX)
+    JB         ( LLTAG(GMB_loop_end) )
+
+ALIGNTEXT16
+LLTAG(GMB_loop_begin):
+
+    CMP_W      ( CONST(0), REGIND(EBX) )	/* *mask == 0 && *(mask + 1) == 0 */
+    JE         ( LLTAG(GMB_loop_continue) )
+
+    /* main loop */
+#define ONE(x)
+#define TWO(x)	x
+    MAIN       ( EDI, ESI )
+#undef ONE
+#undef TWO
+
+LLTAG(GMB_loop_continue):
+
+    DEC_L      ( ECX )
+    DEC_L      ( ECX )				/* n -= 2 */
+    ADD_L      ( CONST(2), EBX )		/* mask += 2 */
+    ADD_L      ( CONST(8), EDI )		/* rgba += 2 */
+    ADD_L      ( CONST(8), ESI )		/* dest += 2 */ 
+    CMP_L      ( CONST(2), ECX )
+    JAE        ( LLTAG(GMB_loop_begin) )
+
+LLTAG(GMB_loop_end):
+
+    CMP_L      ( CONST(1), ECX )
+    JB         ( LLTAG(GMB_done) )
+
+    CMP_B      ( CONST(0), REGIND(EBX) )	/* *mask == 0 */
+    JE         ( LLTAG(GMB_done) )
+
+    /* runout */
+#define ONE(x)	x
+#define TWO(x)
+    MAIN       ( EDI, ESI )
+#undef ONE
+#undef TWO
+
+LLTAG(GMB_done):
+
+    EMMS
+
+LLTAG(GMB_return):
+
+    POP_L      ( EBX )
+    POP_L      ( EDI )
+    POP_L      ( ESI )
+    MOV_L      ( EBP, ESP )
+    POP_L      ( EBP )
+    RET
+
+#undef TAG
+#undef LLTAG
+#undef INIT
+#undef MAIN