diff --git a/src/libsys/libsys.h b/src/libsys/libsys.h
index f017ecf..6ba0049 100644
--- a/src/libsys/libsys.h
+++ b/src/libsys/libsys.h
@@ -250,46 +250,6 @@
 #define COP0_INSTR_INVALL_DCACHE		34
 #define COP0_INSTR_INVAT_DCACHE			35
 
-/*
-void ICACHE_invalidate_all(void)
-{
-	__asm__
-	(
-		"cop0	32\n"
-	);
-}
-
-void ICACHE_invalidate_at(uint32_t* pPtr)
-{
-	__asm__
-	(
-		"mtc0   %[pPtr], $31\n"
-		"cop0	33\n"
-		:
-		: [pPtr] "r" (pPtr)
-	);
-}
-
-void DCACHE_invalidate_all(void)
-{
-	__asm__
-	(
-		"cop0	34\n"
-	);
-}
-
-void DCACHE_invalidate_at(uint32_t* pPtr)
-{
-	__asm__
-	(
-		"mtc0   %[pPtr], $31\n"
-		"cop0	35\n"
-		:
-		: [pPtr] "r" (pPtr)
-	);
-}
-*/
-
 #define CP0_read(idx) \
 ({									\
 	uint32_t result;					\