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53 lines
983 B
ArmAsm
53 lines
983 B
ArmAsm
;
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; Ullrich von Bassewitz, 22.11.2002
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;
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; int __fastcall__ fclose (FILE* f);
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; /* Close a file */
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;
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.export _fclose
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.import _close
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.importzp ptr1
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.include "errno.inc"
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.include "_file.inc"
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; ------------------------------------------------------------------------
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; Code
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.proc _fclose
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sta ptr1
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stx ptr1+1 ; Store f
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; Check if the file is really open
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ldy #_FILE::f_flags
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lda (ptr1),y
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and #_FOPEN
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bne @L1
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; File is not open
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lda #EINVAL
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sta __errno
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ldx #0
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stx __errno+1
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dex
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txa
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rts
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; File is open. Reset the flags and close the file.
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@L1: lda #_FCLOSED
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sta (ptr1),y
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ldy #_FILE::f_fd
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lda (ptr1),y
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ldx #0
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jmp _close ; Will set errno and return an error flag
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.endproc
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