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42 lines
724 B
ArmAsm
42 lines
724 B
ArmAsm
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; Oliver Schmidt, 30.12.2004
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;
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; int __fastcall__ close (int fd);
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;
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.export _close
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.import closedirect, freebuffer
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.import errnoexit, oserrexit
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.import return0
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.include "filedes.inc"
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_close:
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; Process fd
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jsr getfd ; Returns A, Y and C
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bcs errno
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; Check for device
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bmi zerofd
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; Close file
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jsr closedirect ; Preserves Y
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bcs oserr
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; Mark fdtab slot as free
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zerofd: lda #$00
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sta fdtab + FD::REF_NUM,y
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; Cleanup I/O buffer
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jsr freebuffer
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; Return success
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jmp return0
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; Return errno
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errno: jmp errnoexit
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; Return oserror
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oserr: jmp oserrexit
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