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git-svn-id: svn://svn.cc65.org/cc65/trunk@3385 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2005-02-14 10:28:54 +00:00
parent 100fbfc0d1
commit 6c796774d8
1 changed files with 24 additions and 35 deletions
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59
libsrc/common/vfprintf.s
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@ -6,9 +6,9 @@
; 2005-02-11, Greg King
.export _vfprintf
.import pushax, popax, push1, pushwysp, ldaxysp, ldaxidx, incsp6
.import push1, pushwysp, incsp6
.import _fwrite, __printf
.importzp sp, ptr1, ptr2
.importzp sp, ptr1
.macpack generic
@ -29,72 +29,61 @@ ptr: .res 2 ; Points to output file
; ----------------------------------------------------------------------------
; Callback routine used for the actual output.
;
; Since we know, that this routine is always called with "our" outdesc, we
; can ignore the passed pointer d, and access the data directly. While this
; is not very clean, it gives better and shorter code.
;
; static void out (struct outdesc* d, const char* buf, unsigned count)
; /* Routine used for writing */
; {
; register size_t cnt;
;
; /* Write to the file */
; if ((cnt = fwrite(buf, 1, count, (FILE *)d->ptr)) == 0) {
; d->ccount = -1;
; if ((cnt = fwrite(buf, 1, count, ptr)) == 0) {
; ccount = -1;
; } else {
; d->ccount += cnt;
; ccount += cnt;
; }
; }
; About to call
;
; fwrite (buf, 1, count, (FILE*) d->ptr);
; fwrite (buf, 1, count, ptr);
;
out: ldy #5
jsr pushwysp ; Push buf
jsr push1 ; Push #1
ldy #7
jsr pushwysp ; Push count
ldy #11 ; Current offset of D
jsr ldaxysp ; Load D
ldy #5 ; Offset of ptr1+1 in struct outdesc
jsr ldaxidx ; Load
lda ptr
ldx ptr+1
jsr _fwrite
sta ptr2 ; Save function result
stx ptr2+1
; Get D and store it in ptr1
ldy #5
jsr ldaxysp
sta ptr1
stx ptr1+1
; Load the offset of ccount in struct outdesc
ldy #$00
sta ptr1 ; Save function result
stx ptr1+1
; Check the return value.
lda ptr2+1
ora ptr2
ora ptr1+1
bne @Ok
; We had an error. Store -1 into d->ccount
; We had an error. Store -1 into ccount
.ifp02
lda #<-1
.else
dec a
.endif
sta (ptr1),y
iny
sta ccount
bne @Done ; Branch always
; Result was ok, count bytes written
@Ok: lda (ptr1),y
add ptr2
sta (ptr1),y
iny
lda (ptr1),y
adc ptr2+1
@Done: sta (ptr1),y
@Ok: lda ptr1
add ccount
sta ccount
txa
adc ccount+1
@Done: sta ccount+1
jmp incsp6 ; Drop stackframe