This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / ia64 / xen / xensetup.S

diff --git a/arch/ia64/xen/xensetup.S b/arch/ia64/xen/xensetup.S
new file mode 100644 (file)
index 0000000..a2beb1c
--- /dev/null
+++ b/arch/ia64/xen/xensetup.S
@@ -0,0 +1,54 @@
+/*
+ * Support routines for Xen
+ *
+ * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
+ */
+
+#include <asm/processor.h>
+#include <asm/asmmacro.h>
+
+#define isBP   p3      // are we the Bootstrap Processor?
+
+       .text
+GLOBAL_ENTRY(early_xen_setup)
+       mov r8=ar.rsc           // Initialized in head.S
+(isBP) movl r9=running_on_xen;;
+       extr.u r8=r8,2,2;;      // Extract pl fields
+       cmp.eq p7,p0=r8,r0      // p7: !running on xen
+       mov r8=1                // booleanize.
+(p7)   br.ret.sptk.many rp;;
+(isBP) st4 [r9]=r8
+       movl r10=xen_ivt;;
+       
+       mov cr.iva=r10
+
+#if XSI_BASE != 0xf100000000000000UL
+       /* Backward compatibility.  */
+(isBP) mov r2=0x600
+(isBP) movl r28=XSI_BASE;;
+(isBP) break 0x1000;;
+#endif
+
+       br.ret.sptk.many rp
+       ;;
+END(early_xen_setup)
+
+#include <xen/interface/xen.h>
+
+/* Stub for suspend.
+   Just force the stacked registers to be written in memory.  */       
+GLOBAL_ENTRY(HYPERVISOR_suspend)
+       alloc r20=ar.pfs,0,0,0,0
+       mov r14=2
+       mov r15=r12
+       ;;
+       /* We don't want to deal with RSE.  */
+       flushrs
+       mov r2=__HYPERVISOR_sched_op
+       st4 [r12]=r14
+       ;;
+       break 0x1000
+       ;; 
+       mov ar.pfs=r20
+       br.ret.sptk.many b0
+END(HYPERVISOR_suspend)