Use a subroutine to set errno to save some space.

git-svn-id: svn://svn.cc65.org/cc65/trunk@3032 b7a2c559-68d2-44c3-8de9-860c34a00d81
2004-05-13 21:09:08 +00:00
parent 7a9cabe279
commit 8f7b91eea6
9 changed files with 36 additions and 27 deletions
--- a/libsrc/common/_seterrno.s
+++ b/libsrc/common/_seterrno.s
@@ -0,0 +1,22 @@
+;
+; Ullrich von Bassewitz, 2004-05-13
+;
+; __seterrno: Will set __errno to the value in A and return zero in A. Other
+;             registers aren't changed. The function is C callable, but 
+;             currently only called from asm code.
+;
+
+      	.include        "errno.inc"
+
+.code
+
+.proc   __seterrno
+
+        sta     __errno
+        lda     #0
+        sta     __errno+1
+        rts
+
+.endproc
+
+