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support append mode

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1272 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cpg 2002-05-16 15:28:07 +00:00
parent e79d285671
commit 5c2e2e5a96
1 changed files with 23 additions and 3 deletions
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26
libsrc/atari/open.s
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@ -1,5 +1,5 @@
;
; Christian Groessler, May-2000
; Christian Groessler, May-2002
;
; int open(const char *name,int flags,...);
;
@ -42,13 +42,33 @@ seterr: jsr __seterrno
rts ; return -1
; process the mode argument
; @@@TODO: append not handled yet!
iocbok: stx tmp4
jsr clriocb ; init with zero
ldy #1
jsr ldaxysp ; get mode
;brk
ldx tmp4
pha
and #O_APPEND
beq no_app
pla
and #15
cmp #O_RDONLY ; DOS supports append with write-only only
beq invret
cmp #O_RDWR
beq invret
lda #OPNOT|APPEND
bne set
.ifndef UCASE_FILENAME
invret: lda #<EINVAL ; file name is too long
ldx #>EINVAL
jmp seterr
.endif
no_app: pla
and #15
cmp #O_RDONLY
bne l1
lda #OPNIN
@ -73,7 +93,7 @@ cont: ldy #3
jsr ucase_fn
bcc ucok1
lda #<EINVAL ; file name is too long
invret: lda #<EINVAL ; file name is too long
ldx #>EINVAL
jmp seterr
ucok1: