1 files changed, 48 insertions, 0 deletions
diff --git a/rdoff/test/rdtlib.asm b/rdoff/test/rdtlib.asm
new file mode 100644
index 0000000..6c2b8ec
--- /dev/null
+++ b/rdoff/test/rdtlib.asm
@@ -0,0 +1,48 @@
+	;; library functions for rdtmain - test of rdx linking and execution
+
+	;; library function = _strcmp, defined as in C
+
+[SECTION .text]
+[BITS 32]
+
+[GLOBAL _strcmp]
+_strcmp:
+	push ebp
+	mov ebp,esp
+
+	;; ebp+8 = first paramater, ebp+12 = second
+
+	mov esi,[ebp+8]
+	mov edi,[ebp+12]
+
+.loop:
+	mov cl,byte [esi]
+	mov dl,byte [edi]
+	cmp cl,dl
+	jb .below
+	ja .above
+	or cl,cl
+	jz .match
+	inc esi
+	inc edi
+	jmp .loop
+
+.below:	
+	mov eax,-1
+	pop ebp
+	ret
+	
+.above:
+	mov eax,1
+	pop ebp
+	ret
+
+.match:
+	xor eax,eax
+	pop ebp
+	ret
+
+[SECTION .data]
+[GLOBAL _message]
+
+_message:	db 'hello',0
+\ No newline at end of file