Added support for cc65 program arguments.

libsrc/sim6502/mainargs.s

@@ -0,0 +1,16 @@
+;
+; Oliver Schmidt, 2013-05-16
+;
+
+        .constructor    initmainargs, 24
+        .import         __argc, __argv, args
+
+        .segment        "INIT"
+
+initmainargs:
+        lda     #<__argv
+        ldx     #>__argv
+        jsr     args
+        sta     __argc
+        stx     __argc+1
+        rts

libsrc/sim6502/paravirt.s

@@ -7,10 +7,11 @@
 ; int __fastcall__ write (int fd, const void* buf, unsigned count);
 ;
 
-        .export         exit, _open, _close, _read, _write
+        .export         args, exit, _open, _close, _read, _write
 
-exit            := $FFF0
-_open           := $FFF1
-_close          := $FFF2
-_read           := $FFF3
-_write          := $FFF4
+args            := $FFF0
+exit            := $FFF1
+_open           := $FFF2
+_close          := $FFF3
+_read           := $FFF4
+_write          := $FFF5