rename the C main() function to main_(). this avoids gcc's implicit

call to __main(), and therefore saves the size of the call and the
  size of a stub implementation of __main().
in the primary boot block, don't bother saving/restoring the argument
  passed in from the caller.  There is no such argument (that we care
  about, at least) to the primary.  (for secondary, it's the firmware
  FD being used.)

sys/arch/alpha/stand/bootxx/bootxx.c

@@ -1,4 +1,4 @@
-/* $NetBSD: bootxx.c,v 1.7 1999/03/27 09:01:27 ross Exp $ */
+/* $NetBSD: bootxx.c,v 1.8 1999/03/31 03:03:01 cgd Exp $ */
 
 /*
  * Copyright (C) 1998 by Ross Harvey
@@ -174,7 +174,7 @@ static void printdec(int n)
 }
 
 void
-main()
+main_()
 {
 	int fd;
 	char *loadaddr;

sys/arch/alpha/stand/common/boot.c

@@ -1,4 +1,4 @@
-/* $NetBSD: boot.c,v 1.12 1999/03/27 09:01:28 ross Exp $ */
+/* $NetBSD: boot.c,v 1.13 1999/03/31 03:03:01 cgd Exp $ */
 
 /*
  * Copyright (c) 1992, 1993
@@ -78,7 +78,7 @@ char *kernelnames[] = {
 };
 
 void
-main(fd)
+main_(fd)
 	int	fd;
 {
 	char *name, **namep;

sys/arch/alpha/stand/common/start.S

@@ -1,4 +1,4 @@
-/* $NetBSD: start.S,v 1.5 1998/10/15 01:02:55 ross Exp $ */
+/* $NetBSD: start.S,v 1.6 1999/03/31 03:03:01 cgd Exp $ */
 
 /*  
  * Mach Operating System
@@ -51,30 +51,24 @@ Lstartgp:
 #ifndef PRIMARY_BOOTBLOCK
 	lda	sp,start		/* start stack below text */
 	lda	sp,-ENTRY_FRAME(sp)
-#endif
 
 	or	a0,zero,s0
+#endif
 	lda	a0,_edata
 	lda	a1,_end
 	subq	a1,a0,a1
 	CALL(bzero)
+#ifndef PRIMARY_BOOTBLOCK
 	or	s0,zero,a0
+#endif
 
-
-	CALL(main)			/* transfer to C */
+	CALL(main_)			/* transfer to C */
 
 XLEAF(_rtt, 0)
 XLEAF(halt, 0)
 	call_pal PAL_halt		/* halt if we ever return */
 END(start)
 
-/*
- * Dummy routine for GCC2.
- */
-LEAF(__main,0)
-	RET
-END(__main)
-
 /*
  * cpu_number
  *	Return the cpu number, using the whami instruction.