math: added stubs for 16 bit math

diff --git a/src/math.s b/src/math.s
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..8231515ca02847ab89ba1151a5d906b6464fabe2 100644 (file)
--- a/src/math.s
+++ b/src/math.s
@@ -0,0 +1,16 @@
+
+       ; 16 bit add
+       ; inputs:
+       ;               m16_a/m16_b
+       ;       returns:
+       ;               m16_a: m16_a + m16_b
+m16_add:
+       ret
+
+       ; 16 bit sub
+       ; inputs:
+       ;               m16_a/m16_b
+       ;       returns:
+       ;               m16_a: m16_a - m16_b
+m16_sub:
+       ret