leave space for scb

SCCS-vsn: sys/vax/stand/srt0.c 4.4

diff --git a/usr/src/sys/vax/stand/srt0.c b/usr/src/sys/vax/stand/srt0.c
index ea9c38f..80f6e0a 100644 (file)
--- a/usr/src/sys/vax/stand/srt0.c
+++ b/usr/src/sys/vax/stand/srt0.c
@@ -1,4 +1,4 @@
-/*     srt0.c  4.3     %G%     */
+/*     srt0.c  4.4     %G%     */

 
 /*
  * Startup code for standalone system
 
 /*
  * Startup code for standalone system


@@ -15,9 +15,15 @@
 
        .set    HIGH,31         # mask for total disable
 
 
        .set    HIGH,31         # mask for total disable
 

+entry: .globl  entry

        .word   0x0
        mtpr    $HIGH,$IPL              # just in case
        .word   0x0
        mtpr    $HIGH,$IPL              # just in case

-       movl    $RELOC-0x2000,sp
+       mtpr    $_Scbbase,$SCBB
+       movl    $RELOC-0x2400,sp
+       mtpr    $RELOC-0x2000,$ISP      /* space for interrupts
+                                       /* (in case we are not using that
+                                       /* stack already)
+                                       */

 #if VAX==780
        movl    $1,PHYSUBA+4            # init
 ubic:
 #if VAX==780
        movl    $1,PHYSUBA+4            # init
 ubic:


@@ -25,12 +31,12 @@ ubic:
        bitl    $0x10000,r0             #       continue;
        jeql    ubic
 #endif
        bitl    $0x10000,r0             #       continue;
        jeql    ubic
 #endif

+start:

        movab   _edata,r0
 clr:
        clrl    (r0)+
        cmpl    r0,sp
        jlss    clr
        movab   _edata,r0
 clr:
        clrl    (r0)+
        cmpl    r0,sp
        jlss    clr

-start:

        calls   $0,_main
        jmp     start
 
        calls   $0,_main
        jmp     start