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Squeezed a few bytes out of open()

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3452 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2005-04-03 18:04:53 +00:00
parent 4df0cf8c7a
commit c81dc42f93
1 changed files with 8 additions and 7 deletions
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15
libsrc/cbm/open.s
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@ -57,13 +57,14 @@ next: dex
.proc _open
cpy #4 ; correct # of arguments (bytes)?
beq parmok ; parameter count ok
tya ; parm count < 4 shouldn't be needed to be...
sec ; ...checked (it generates a c compiler warning)
sbc #4
tay
jsr addysp ; fix stack, throw away unused parameters
; 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