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77 lines
1.7 KiB
ArmAsm
77 lines
1.7 KiB
ArmAsm
;
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; Ullrich von Bassewitz, 31.05.1998
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;
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; Data for the stdio file stream.
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;
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; Be sure to keep the value priority of closeallstreams lower than that of
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; closeallfiles (which is the low level POSIX counterpart and must be
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; called after closeallstreams).
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.export __filetab, _stdin, _stdout, _stderr
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.destructor closeallstreams, 16
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.import _close
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.include "fcntl.inc"
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.include "_file.inc"
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;----------------------------------------------------------------------------
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; Close all files on exit
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.proc closeallstreams
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ldy #((FOPEN_MAX - 1) * _FILE_size)
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loop: sty index ; Save the index
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lda __filetab + _FILE_f_flags,y ; Load file flags
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and #_FOPEN ; Is it open?
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beq next ; jump if closed
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; Close this file
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lda __filetab + _FILE_f_fd,y
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ldx #0
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jsr _close
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; Next file
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next: lda index
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sec
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sbc #_FILE_size
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tay
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bcs loop
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rts
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.endproc
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;----------------------------------------------------------------------------
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; File data
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.data
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__filetab:
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.byte 0, _FOPEN ; stdin
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.byte 1, _FOPEN ; stdout
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.byte 2, _FOPEN ; stderr
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.repeat FOPEN_MAX - 3
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.byte 0, _FCLOSED ; free slot
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.endrepeat
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; Standard file descriptors
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_stdin:
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.word __filetab + (STDIN_FILENO * _FILE_size)
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_stdout:
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.word __filetab + (STDOUT_FILENO * _FILE_size)
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_stderr:
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.word __filetab + (STDERR_FILENO * _FILE_size)
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; Temp storage for closeallstreams
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.bss
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index: .res 1
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