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-rw-r--r--arch/sparc64/mm/ultra.S31
1 files changed, 29 insertions, 2 deletions
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 796e005dad8b..9bb2d90a9df6 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -1,7 +1,7 @@
-/* $Id: ultra.S,v 1.72 2002/02/09 19:49:31 davem Exp $
+/*
* ultra.S: Don't expand these all over the place...
*
- * Copyright (C) 1997, 2000 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997, 2000, 2008 David S. Miller (davem@davemloft.net)
*/
#include <asm/asi.h>
@@ -15,6 +15,7 @@
#include <asm/thread_info.h>
#include <asm/cacheflush.h>
#include <asm/hypervisor.h>
+#include <asm/cpudata.h>
/* Basically, most of the Spitfire vs. Cheetah madness
* has to do with the fact that Cheetah does not support
@@ -514,6 +515,32 @@ xcall_report_regs:
b rtrap_xcall
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
+#ifdef CONFIG_MAGIC_SYSRQ
+ .globl xcall_fetch_glob_regs
+xcall_fetch_glob_regs:
+ sethi %hi(global_reg_snapshot), %g1
+ or %g1, %lo(global_reg_snapshot), %g1
+ __GET_CPUID(%g2)
+ sllx %g2, 6, %g3
+ add %g1, %g3, %g1
+ rdpr %tstate, %g7
+ stx %g7, [%g1 + GR_SNAP_TSTATE]
+ rdpr %tpc, %g7
+ stx %g7, [%g1 + GR_SNAP_TPC]
+ rdpr %tnpc, %g7
+ stx %g7, [%g1 + GR_SNAP_TNPC]
+ stx %o7, [%g1 + GR_SNAP_O7]
+ stx %i7, [%g1 + GR_SNAP_I7]
+ sethi %hi(trap_block), %g7
+ or %g7, %lo(trap_block), %g7
+ sllx %g2, TRAP_BLOCK_SZ_SHIFT, %g2
+ add %g7, %g2, %g7
+ ldx [%g7 + TRAP_PER_CPU_THREAD], %g3
+ membar #StoreStore
+ stx %g3, [%g1 + GR_SNAP_THREAD]
+ retry
+#endif /* CONFIG_MAGIC_SYSRQ */
+
#ifdef DCACHE_ALIASING_POSSIBLE
.align 32
.globl xcall_flush_dcache_page_cheetah
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