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.syntax unified
.cpu cortex-m0plus
.thumb
.type putstr, %function
.type putstrln, %function
.type cmpstr, %function
.global putstr, putstrln, 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
putstrln:
PUSH {LR}
BL putstr
LDR R0, =crlf
BL putstr
POP {PC}
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
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