1 files changed, 32 insertions, 0 deletions
diff --git a/newasm/string.s b/newasm/string.s
new file mode 100644
index 0000000..c1dad1c
--- /dev/null
+++ b/newasm/string.s
@@ -0,0 +1,32 @@
+.syntax unified
+.cpu cortex-m0plus
+.thumb
+
+.type putstr, %function
+.type cmpstr, %function
+
+.global putstr, cmpstr
+
+putstr: LDR     R3, =0x40034000
+        MOVS    R2, 0x20
+1:      LDR     R1, [R3, 0x18]
+        TST     R1, R2
+        BNE     1b
+        LDRB    R1, [R0]
+        TST     R1, R1
+        BEQ     2f
+        STRB    R1, [R3]
+        ADDS    R0, 1
+        B       1b
+2:      BX      LR
+
+cmpstr: MOVS    R4, 0
+1:      LDRB    R2, [R0, R4]
+        LDRB    R3, [R1, R4]
+        CMP     R2, R3
+        BNE     2f
+        CMP     R2, 0
+        BEQ     2f
+        ADDS    R4, 1
+        B       1b
+2:      BX      LR