6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-07-03 06:29:36 +00:00
Code Issues Projects Releases Wiki Activity

adapted to fastcall calling convention

Browse Source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@1723 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cpg 2002-12-06 00:32:20 +00:00
parent 4314ed5185
commit c56b5218d2
1 changed files with 31 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
libsrc/atari/rwcommon.s
View File

@ -1,53 +1,53 @@
;
;
; common iocb setup routine for read, write
; expects parameters (int fd,void *buf,int count)
; expects __fastcall__ parameters (int fd, void *buf, int count)
;
.include "atari.inc"
.include "errno.inc"
.importzp tmp2,tmp3
.import incsp6,ldax0sp,ldaxysp
.include "atari.inc"
.include "errno.inc"
.importzp tmp2,tmp3
.import incsp4,ldax0sp,ldaxysp
.import __errno,__oserror
.import fdtoiocb
.export __rwsetup
.export __rwsetup
__rwsetup:
ldy #5
jsr ldaxysp ; get fd
sta tmp2
stx tmp3 ; remember size
ldy #3
jsr ldaxysp ; get fd
jsr fdtoiocb ; convert to iocb
bmi iocberr
sta tmp3 ; save it
jsr ldax0sp ; get size
stx tmp2
ldx tmp3 ; iocb
tax
cpx #$80 ; iocb must be 0...7
bcs iocberr
sta ICBLL,x
lda tmp2 ; size hi
sta ICBLH,x
ldy #3 ; get buf addr (was 2 in orig. version)
jsr ldaxysp
stx tmp2
ldx tmp3
sta ICBAL,x
lda tmp2
sta ICBAH,x
jsr incsp6 ; pop args
lda tmp2
sta ICBLL,x
lda tmp3 ; size hi
sta ICBLH,x
stx tmp3
jsr ldax0sp ; get buf addr
stx tmp2
ldx tmp3
sta ICBAL,x
lda tmp2
sta ICBAH,x
jsr incsp4 ; pop args
lda ICBLL,x
ora ICBLH,x ; return with Z if length was 0
rts
rts
iocberr:jsr incsp6 ; pop args
iocberr:jsr incsp4 ; pop args
ldx #$FF ; indicate error + clear ZF
rts
;
; this routine updates errno. do a JMP here right after calling
; CIOV. we expect status in Y.
; CIOV. we expect status in Y.
;
.export __do_oserror,__seterrno,__inviocb
.export __do_oserror,__seterrno,__inviocb
__do_oserror:
sty __oserror ; save os dependent error code
retminus:
@ -56,9 +56,9 @@ retminus:
rts
__seterrno:
sta __errno
stx __errno+1
rts
sta __errno
stx __errno+1
rts
;
; sets EINVAL error code and returns -1