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;
; int __fastcall__ vscanf (const char* format, va_list ap);
;
; Ullrich von Bassewitz, 2004-11-27
;
.export _vscanf
.import _vfscanf
.import _stdin
.import decsp2
.include "zeropage.inc"
; ----------------------------------------------------------------------------
; int __fastcall__ vscanf (const char* format, va_list ap)
; /* Standard C function */
; {
; return vfscanf (stdin, format, ap);
; }
;
.code
_vscanf:
pha ; Save low byte of ap
; Decrement the stack pointer by two for the additional parameter.
jsr decsp2 ; Won't touch X
; Move the format down
ldy #2
lda (sp),y ; Load byte of format
ldy #0
sta (sp),y
ldy #3
lda (sp),y
ldy #1
sta (sp),y
; Store stdin into the stack frame
iny
lda _stdin
sta (sp),y
iny
lda _stdin+1
sta (sp),y
; Restore the low byte of ap and jump to vfscanf, which will cleanup the stack
pla
jmp _vfscanf
|
