extern outline

raw_lib.asm

@@ -0,0 +1,12 @@
+
+global raw_add
+section .text
+raw_add:
+    ; expects args on stack: [r12]=b, [r12+8]=a
+    ; returns sum on stack
+    mov rax, [r12]       ; b
+    add r12, 8
+    mov rbx, [r12]       ; a
+    add rax, rbx
+    mov [r12], rax
+    ret