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.export _open
.import addysp,popax
.importzp sp,tmp2,tmp3,tmp1
.include "telestrat.inc"
.include "errno.inc"
.include "fcntl.inc"
; int open (const char* name, int flags, ...); /* May take a mode argument */
.proc _open
; Throw away any additional parameters passed through the ellipsis
dey ; Parm count < 4 shouldn't be needed to be...
dey ; ...checked (it generates a c compiler warning)
dey
dey
beq parmok ; Branch if parameter count ok
jsr addysp ; Fix stack, throw away unused parameters
; Parameters ok. Pop the flags and save them into tmp3
parmok:
jsr popax ; Get flagss
sta tmp3 ; save flags
; Get the filename from stack and parse it. Bail out if is not ok
jsr popax ; Get name
ldy tmp3 ; Get flags again
BRK_TELEMON XOPEN ; launch primitive ROM
rts
.endproc
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