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implement _sysrename for Atari

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This commit is contained in:
Christian Groessler 2013-07-24 00:40:09 +02:00
parent a01b9f08ed
commit 993555da94
7 changed files with 231 additions and 10 deletions
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5
libsrc/atari/open.s
View File

@ -91,7 +91,10 @@ cont: ldy #3
jsr ldaxysp
.ifdef UCASE_FILENAME
.ifdef DEFAULT_DEVICE
ldy #$80
sty tmp2 ; set flag for ucase_fn
.endif
jsr ucase_fn
bcc ucok1
invret: lda #<EINVAL ; file name is too long

7
libsrc/atari/syschdir.s
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@ -15,6 +15,9 @@
.importzp tmp3
.import addysp
.import ucase_fn
.ifdef DEFAULT_DEVICE
.importzp tmp2
.endif
.endif
.export __syschdir
@ -40,6 +43,10 @@ iocbok: stx tmp4 ; remember IOCB index
.ifdef UCASE_FILENAME
.ifdef DEFAULT_DEVICE
ldy #$80
sty tmp2 ; set flag for ucase_fn
.endif
jsr ucase_fn
bcc ucok1

7
libsrc/atari/sysmkdir.s
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@ -15,6 +15,9 @@
.ifdef UCASE_FILENAME
.importzp tmp3
.import ucase_fn
.ifdef DEFAULT_DEVICE
.importzp tmp2
.endif
.endif
.export __sysmkdir
@ -46,6 +49,10 @@ iocbok: stx tmp4 ; remember IOCB index
.ifdef UCASE_FILENAME
.ifdef DEFAULT_DEVICE
ldy #$80
sty tmp2 ; set flag for ucase_fn
.endif
jsr ucase_fn
bcc ucok1

7
libsrc/atari/sysremove.s
View File

@ -12,6 +12,9 @@
.importzp tmp3
.import addysp
.import ucase_fn
.ifdef DEFAULT_DEVICE
.importzp tmp2
.endif
.endif
.export __sysremove
@ -37,6 +40,10 @@ iocbok: stx tmp4 ; remember IOCB index
.ifdef UCASE_FILENAME
.ifdef DEFAULT_DEVICE
ldy #$80
sty tmp2 ; set flag for ucase_fn
.endif
jsr ucase_fn
bcc ucok1

184
libsrc/atari/sysrename.s Normal file
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@ -0,0 +1,184 @@
;
; Christian Groessler, 2013-07-24
;
; unsigned char __fastcall__ _sysrename (const char* oldname, const char* newname);
;
.include "atari.inc"
.import findfreeiocb
.importzp tmp4, sp, ptr2, ptr3
.import incsp2, subysp, addysp, popax
.ifdef UCASE_FILENAME
.importzp tmp3
.import ucase_fn
.ifdef DEFAULT_DEVICE
.importzp tmp2
.endif
.endif
.export __sysrename
.proc __sysrename
pha ; save input parameter
txa
pha
jsr findfreeiocb
beq iocbok ; we found one
pla
pla ; fix up stack
jsr incsp2
lda #TMOF ; too many open files
rts
iocbok: stx tmp4 ; remember IOCB index
pla
sta ptr2+1 ; remember newname
pla
sta ptr2 ; ditto.
jsr popax ; get oldname
ldy #0
sty sspc+1 ; initialize stack space
.ifndef UCASE_FILENAME
sta ptr3
stx ptr3+1
sty sspc
.else
; uppercase first (old) name and prepend device if needed
.ifdef DEFAULT_DEVICE
ldy #$80
sty tmp2 ; set flag for ucase_fn
.endif
jsr ucase_fn
bcc ucok1
lda #183 ; see oserror.s
rts
ucok1: sta ptr3
stx ptr3+1 ; remember pointer to uppercased old name
lda tmp3 ; # of bytes reserved on the stack
sta sspc ; remember...
; uppercase second (new) name and don't prepend device
.ifdef DEFAULT_DEVICE
ldy #0
sty tmp2 ; set flag for ucase_fn
.endif
lda ptr2
ldx ptr2+1
jsr ucase_fn
bcc ucok2
ldy tmp3 ; get size
jsr addysp ; free used space on the stack
lda #183 ; see oserror.s
rts
ucok2: sta ptr2 ; remember pointer to uppercased new name
stx ptr2+1
; update sspc -- # of bytes used on the stack
lda sspc
clc
adc tmp3
sta sspc
bcc ukok4
inc sspc+1
ukok4:
.endif
; create a string on the stack with the old filename and the new filename separated by an invalid character (space in our case)
; ptr2 - pointer to new name
; ptr3 - pointer to old name
lda #128
tay
clc
adc sspc
sta sspc
bcc L1
inc sspc+1
L1: jsr subysp ; make room on the stack
; copy old name
ldy #0
con: lda (ptr3),y
sta (sp),y
beq copyend
iny
bne con
copyend:lda #$20 ; space
sta (sp),y
iny
tya ; get current offset (beyond old name)
clc
adc sp
sta ptr3
lda sp+1
adc #0
sta ptr3+1 ; ptr3 now contains pointer to space for new filename
; copy new name
ldy #0
cnn: lda (ptr2),y
sta (ptr3),y
beq copend2
iny
bne cnn
copend2:ldx tmp4
lda sp
sta ICBAL,x
lda sp+1
sta ICBAH,x
lda #RENAME
sta ICCOM,x
lda #0
sta ICAX1,x
sta ICAX2,x
sta ICBLL,x
sta ICBLH,x
jsr CIOV
tya
pha
; clean up stack
lda sp
clc
adc sspc
sta sp
bcc L2
inc sp+1
L2: pla
tay
; handle status
bmi cioerr
lda #0
rts
cioerr: tya
rts
.endproc ; __sysrename
.bss
sspc: .res 2 ; stack space used

13
libsrc/atari/sysrmdir.s
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@ -11,11 +11,16 @@
.export __sysrmdir
.import __sysremove
.import __dos_type
.import ucase_fn
.import findfreeiocb
.importzp tmp4
.ifdef UCASE_FILENAME
.import ucase_fn
.import addysp
.importzp tmp3
.importzp tmp4
.ifdef DEFAULT_DEVICE
.importzp tmp2
.endif
.endif
.proc __sysrmdir
@ -51,6 +56,10 @@ do_sparta:
.ifdef UCASE_FILENAME
.ifdef DEFAULT_DEVICE
ldy #$80
sty tmp2 ; set flag for ucase_fn
.endif
jsr ucase_fn
bcc ucok1

18
libsrc/atari/ucase_fn.s
View File

@ -7,6 +7,8 @@
;
; Calling parameters:
; AX - points to filename
; tmp2 - 0/$80 for don't/do prepend default device if no device
; is present in the passed string (only .ifdef DEFAULT_DEVICE)
; Return parameters:
; C - 0/1 for OK/Error (filename too long)
; AX - points to uppercased version of the filename on the stack
@ -19,7 +21,7 @@
.include "atari.inc"
.ifdef DEFAULT_DEVICE
.importzp tmp2
.importzp tmp2, tmp1
.import __defdev
.endif
.importzp tmp3,ptr4,sp
@ -38,15 +40,16 @@
stx ptr4+1
.ifdef DEFAULT_DEVICE
; bit #0 of tmp2 is used as a flag whether device name is present in passed string (1 = present, 0 = not present)
ldy #1
sty tmp2 ; initialize flag: device present in passed string
inc tmp2 ; initialize flag: device present
lda #':'
cmp (ptr4),y
beq hasdev
iny
cmp (ptr4),y
beq hasdev
sta tmp2 ; set flag: no device in passed string
dec tmp2 ; set flag: no device in passed string
hasdev:
.endif
@ -54,7 +57,7 @@ hasdev:
sty tmp3 ; save size
jsr subysp ; make room on the stack
; copy filename to the temp. place on the stack, also uppercasing it
; copy filename to the temp. place on the stack, while uppercasing it
ldy #0
loop2: lda (ptr4),y
@ -77,9 +80,10 @@ L1:
copy_end:
.ifdef DEFAULT_DEVICE
lda tmp2
cmp #1 ; was device present in passed string?
beq hasdev2 ; yes, don't prepend something
lda #1
bit tmp2
bne hasdev2 ; yes, don't prepend something
bpl hasdev2
ldy #128+3 ; no, prepend "D:" (or other device)
sty tmp3 ; adjust stack size used