Add GTE optimization example : macro file

CPUMAC.H

@@ -0,0 +1,68 @@
+/*
+** cpumac.h
+   mike acton
+*/
+
+// cpu_ldr(cpu register,data pointer)
+// copy 32bit data from dp to r
+#define cpu_ldr(r,dp)\
+asm(\
+  "lw %0, 0(%1);"\
+  : "=r" (r)\
+  : "r"  (dp)\
+)
+
+// cpu_gted0(cpu register)
+// copy 32bit data from r to gte register 0
+#define cpu_gted0(r)\
+asm(\
+  "mtc2 %0, $0;"\
+  :\
+  : "r" (r)\
+)
+
+// cpu_gted1(cpu register)
+// copy 32bit data from r to gte register 1
+#define cpu_gted1(r)\
+asm(\
+  "mtc2 %0, $1;"\
+  :\
+  : "r" (r)\
+)
+
+// cpu_gted2(cpu register)
+// copy 32bit data from r to gte register 2
+#define cpu_gted2(r)\
+asm(\
+  "mtc2 %0, $2;"\
+  :\
+  : "r" (r)\
+)
+
+// cpu_gted3(cpu register)
+// copy 32bit data from r to gte register 3
+#define cpu_gted3(r)\
+asm(\
+  "mtc2 %0, $3;"\
+  :\
+  : "r" (r)\
+)
+
+// cpu_gted4(cpu register)
+// copy 32bit data from r to gte register 4
+#define cpu_gted4(r)\
+asm(\
+  "mtc2 %0, $4;"\
+  :\
+  : "r" (r)\
+)
+
+// cpu_gted5(cpu register)
+// copy 32bit data from r to gte register 5
+#define cpu_gted5(r)\
+asm(\
+  "mtc2 %0, $5;"\
+  :\
+  : "r" (r)\
+)
+