26 lines
462 B
ArmAsm
26 lines
462 B
ArmAsm
.file "strcpy.S"
|
|
|
|
.section .text
|
|
.global _strcpy
|
|
.type _strcpy,@function
|
|
_strcpy:
|
|
;; R1: dest
|
|
;; R2: source
|
|
#ifdef __RX_DISALLOW_STRING_INSNS__
|
|
mov r1, r4 ; Leave the destination address unchanged in the result register.
|
|
|
|
1: mov.b [r2+], r5
|
|
mov.b r5, [r4+]
|
|
cmp #0, r5
|
|
bne 1b
|
|
|
|
rts
|
|
#else
|
|
mov r1, r4
|
|
mov #-1, r3 ; Strictly speaking this is incorrect, but I doubt if anyone will ever know.
|
|
smovu
|
|
mov r4, r1
|
|
rts
|
|
#endif
|
|
.size _strcpy, . - _strcpy
|