mirror of
https://github.com/cc65/cc65.git
synced 2024-08-17 19:29:12 +00:00
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
82 lines
906 B
ArmAsm
82 lines
906 B
ArmAsm
;
|
|
; Ullrich von Bassewitz, 31.05.1998
|
|
;
|
|
; Several small file stream functions
|
|
;
|
|
|
|
.export _clearerr, _feof, _ferror, _fileno, _fflush
|
|
.import return0
|
|
.import __errno
|
|
.importzp ptr1
|
|
|
|
;
|
|
; Get the FILE* parameter, check if the file is open
|
|
;
|
|
|
|
getf: sta ptr1
|
|
stx ptr1+1
|
|
ldy #1
|
|
lda (ptr1),y ; get f->f_flags
|
|
and #$01 ; file open?
|
|
beq @L1 ; jump if no
|
|
clc ; ok
|
|
rts
|
|
@L1: sec
|
|
rts
|
|
|
|
;
|
|
; void clearerr (FILE* f);
|
|
;
|
|
|
|
_clearerr:
|
|
jsr getf
|
|
bcs err
|
|
lda (ptr1),y
|
|
and #$F9
|
|
sta (ptr1),y
|
|
err: rts
|
|
|
|
;
|
|
; int feof (FILE* f);
|
|
;
|
|
|
|
_feof:
|
|
jsr getf
|
|
; bcs err
|
|
lda (ptr1),y
|
|
and #$02
|
|
ldx #0
|
|
rts
|
|
|
|
;
|
|
; int ferror (FILE* f);
|
|
;
|
|
|
|
_ferror:
|
|
jsr getf
|
|
; bcs err
|
|
lda (ptr1),y
|
|
and #$04
|
|
ldx #0
|
|
rts
|
|
|
|
;
|
|
; int fileno (FILE* f);
|
|
;
|
|
|
|
_fileno:
|
|
jsr getf
|
|
; bcs err
|
|
dey
|
|
lda (ptr1),y
|
|
ldx #0
|
|
rts
|
|
|
|
;
|
|
; int __fastcall__ fflush (FILE* f);
|
|
;
|
|
|
|
_fflush = return0
|
|
|
|
|