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34 lines
430 B
ArmAsm
34 lines
430 B
ArmAsm
;
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; Ullrich von Bassewitz, 31.05.1998
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;
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; char* strcpy (char* dest, const char* src);
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;
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.export _strcpy
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.import popax
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.importzp ptr1, ptr2, ptr3
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_strcpy:
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sta ptr1 ; Save src
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stx ptr1+1
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jsr popax ; Get dest
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sta ptr2
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stx ptr2+1
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sta ptr3 ; remember for function return
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stx ptr3+1
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ldy #$00
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L1: lda (ptr1),y
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sta (ptr2),y
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beq L9
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iny
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bne L1
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inc ptr1+1
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inc ptr2+1
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bne L1
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L9: lda ptr3
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ldx ptr3+1
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rts
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