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48 lines
673 B
ArmAsm
48 lines
673 B
ArmAsm
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; Ullrich von Bassewitz, 30.05.1998
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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 IS A HACK!
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;
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.export _write
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.import popax
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.importzp ptr1, ptr2, ptr3
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.include "../cbm/cbm.inc"
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_write: jsr popax ; get count
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sta ptr2
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stx ptr2+1 ; save it for later
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sta ptr3
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stx ptr3+1 ; save for function result
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jsr popax ; get buf
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sta ptr1
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stx ptr1+1
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jsr popax ; get fd and discard it
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L1: lda ptr2
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ora ptr2+1 ; count zero?
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beq L9
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ldy #0
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lda (ptr1),y
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jsr BSOUT
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inc ptr1
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bne L2
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inc ptr1+1
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L2: lda ptr2
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bne L3
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dec ptr2
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dec ptr2+1
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jmp L1
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L3: dec ptr2
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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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