First commit

1 files changed, 29 insertions, 0 deletions

diff --git a/libpsn00b/libc/memmove.s b/libpsn00b/libc/memmove.s
new file mode 100644
index 0000000..961e71f
--- /dev/null
+++ b/libpsn00b/libc/memmove.s
@@ -0,0 +1,29 @@
+.set noreorder
+
+.section .text
+
+# Arguments
+#	a0 - destination address
+#	a1 - source address
+#	a2 - bytes to move
+.global memmove
+.type memmove, @function
+memmove:
+	move	$v0, $a0
+	addu	$a0, $a2
+	addu	$a1, $a2
+	addiu	$a0, -1
+	addiu	$a1, -1
+.loop:
+	blez	$a2, .exit
+	addi	$a2, -1
+	lbu		$v1, 0($a1)
+	addiu	$a1, -1
+	sb		$v1, 0($a0)
+	addiu	$a0, -1
+	b		.loop
+	nop
+.exit:
+	jr		$ra
+	nop
+	
\ No newline at end of file