LibAsm/lib/strcpy.S

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ArmAsm
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.intel_syntax noprefix
.globl _start
.text
# String-copying routine.
# Commented-out lines would also return the starting address of the destination address.
strcpy:
# push rsi
.loop:
movb r10b, [rdi]
cmpb r10b, 0
je .end
movb [rsi], r10b
inc rdi
inc rsi
jmp .loop
.end:
# pop rax
ret