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54 lines
1.0 KiB
ArmAsm
54 lines
1.0 KiB
ArmAsm
;
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; Ullrich von Bassewitz, 2003-04-13
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;
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; int write (int fd, const void* buf, int count);
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;
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; This function is a hack!
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;
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.export _write
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.import popax, popptr1
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.importzp ptr1, ptr2, ptr3, tmp1
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.include "atmos.inc"
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.proc _write
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sta ptr3
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stx ptr3+1 ; save count as result
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inx
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stx ptr2+1
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tax
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inx
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stx ptr2 ; save count with each byte incremented separately
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jsr popptr1 ; get buf
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jsr popax ; get fd and discard
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L1: dec ptr2
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bne L2
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dec ptr2+1
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beq L9
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L2: ldy #0
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lda (ptr1),y
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tax
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cpx #$0A ; Check for \n
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bne L3
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jsr PRINT
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ldx #$0D
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L3: jsr PRINT
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inc ptr1
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bne L1
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inc ptr1+1
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jmp L1
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; No error, return count
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L9: lda ptr3
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ldx ptr3+1
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rts
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.endproc
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