restructured some files

tools/ps2/mips_regs.h

@@ -0,0 +1,40 @@
+#ifndef MIPS_MIPS_REGS_H
+#define REGS_H
+
+/*
+ * MIPS Registers
+ */
+
+#define zero	$0
+#define at	$1
+#define v0	$2
+#define v1	$3
+#define a0	$4
+#define a1	$5
+#define a2	$6
+#define a3	$7
+#define t0	$8
+#define t1	$9
+#define t2	$10
+#define t3	$11
+#define t4	$12
+#define t5	$13
+#define t6	$14
+#define t7	$15
+#define s0	$16
+#define s1	$17
+#define s2	$18
+#define s3	$19
+#define s4	$20
+#define s5	$21
+#define s6	$22
+#define s7	$23
+#define t8	$24
+#define t9	$25
+#define k0	$26
+#define k1	$27
+#define gp	$28
+#define sp	$29
+#define fp	$30
+#define ra	$31
+#endif