6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2025-01-10 19:29:45 +00:00
Code Issues Projects Releases Wiki Activity

Made cbm_open() be more efficient.

Browse Source 
The fastcall argument doesn't need to be put on a stack.  SETNAM can be called before SETLFS.
This commit is contained in:
Greg King 2021-12-23 22:24:55 -05:00 committed by greg-king5
parent 884f72637b
commit 6ac4aa4e20
1 changed files with 4 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
libsrc/cbm/cbm_open.s
View File

@ -1,5 +1,6 @@
;
; Ullrich von Bassewitz, 22.06.2002
; 2002-06-22, Ullrich von Bassewitz
; 2021-12-23, Greg King
;
; Original C code by Marc 'BlackJack' Rintsch, 18.03.2001
;
@ -19,26 +20,17 @@
;
.export _cbm_open
.import popa
.import _cbm_k_setlfs, _cbm_k_setnam, _cbm_k_open
.import __oserror
_cbm_open:
pha
txa
pha ; Save name
jsr _cbm_k_setnam
jsr popa ; Get sec_addr
jsr _cbm_k_setlfs ; Call SETLFS, pop all args
pla
tax
pla ; Get name
jsr _cbm_k_setnam
jsr _cbm_k_open
sta __oserror
rts