New chdir() function

git-svn-id: svn://svn.cc65.org/cc65/trunk@2273 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/common/Makefile

@@ -72,6 +72,7 @@ S_OBJS = 	_fdesc.o 	\
 		atexit.o  	\
 		atoi.o	  	\
 		calloc.o  	\
+                chdir.o         \
 		copydata.o	\
                 creat.o         \
                 ctime.o         \

libsrc/common/chdir.s

@@ -0,0 +1,24 @@
+;
+; Ullrich von Bassewitz, 2003-08-12
+;
+; int __fastcall__ chdir (const char* name);
+;
+
+        .export         _chdir
+
+        .import         __syschdir
+        .import         oserrcheck
+
+
+;--------------------------------------------------------------------------
+
+.proc   _chdir
+
+        jsr     __syschdir      ; Call the machine specific function
+        jmp     oserrcheck      ; Store into _oserror, set errno, return 0/-1
+
+.endproc
+
+
+
+