Deduplicated cache handling. Fixed jump hatch being filled with random stuff

kern/mips/cache.S

@@ -1,29 +1,7 @@
+
 #include <grub/symbol.h>
 
-	/* FIXME: This should invalidate only part of memory.  */
 FUNCTION (grub_cpu_flush_cache)
 FUNCTION (grub_arch_sync_caches)
-	move $t2, $a0
-	addu $t3, $a0, $a1
-	srl $t2, $t2, 5
-	sll $t2, $t2, 5
-	addu $t3, $t3, 0x1f
-	srl $t3, $t3, 5
-	sll $t3, $t3, 5
-	move $t0, $t2
-	subu $t1, $t3, $t2
-r1:
-	cache 1, 0($t0)
-	addiu $t0, $t0, 0x1
-	addiu $t1, $t1, 0xffff
-	bne $t1, $zero, r1
-	sync
-	move $t0, $t2
-	subu $t1, $t3, $t2
-r2:
-	cache 0, 0($t0)
-	addiu $t0, $t0, 0x1
-	addiu $t1, $t1, 0xffff
-	bne $t1, $zero, r2
-	sync
+#include "cache_flush.S"
 	j $ra

kern/mips/cache_flush.S

@@ -0,0 +1,23 @@
+	move $t2, $a0
+	addu $t3, $a0, $a1
+	srl $t2, $t2, 5
+	sll $t2, $t2, 5
+	addu $t3, $t3, 0x1f
+	srl $t3, $t3, 5
+	sll $t3, $t3, 5
+	move $t0, $t2
+	subu $t1, $t3, $t2
+1:
+	cache 1, 0($t0)
+	addiu $t0, $t0, 0x1
+	addiu $t1, $t1, 0xffff
+	bne $t1, $zero, 1b
+	sync
+	move $t0, $t2
+	subu $t1, $t3, $t2
+2:
+	cache 0, 0($t0)
+	addiu $t0, $t0, 0x1
+	addiu $t1, $t1, 0xffff
+	bne $t1, $zero, 2b
+	sync