1 files changed, 60 insertions, 0 deletions

diff --git a/arch/ia64/kernel/paravirtentry.S b/arch/ia64/kernel/paravirtentry.S
new file mode 100644
index 000000000000..2f42fcb9776a
--- /dev/null
+++ b/arch/ia64/kernel/paravirtentry.S
@@ -0,0 +1,60 @@
+/******************************************************************************
+ * linux/arch/ia64/xen/paravirtentry.S
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/asm-offsets.h>
+#include "entry.h"
+
+#define DATA8(sym, init_value)                  \
+        .pushsection .data.read_mostly ;        \
+        .align 8 ;                              \
+        .global sym ;                           \
+        sym: ;                                  \
+        data8 init_value ;                      \
+        .popsection
+
+#define BRANCH(targ, reg, breg)         \
+        movl reg=targ ;                 \
+        ;;                              \
+        ld8 reg=[reg] ;                 \
+        ;;                              \
+        mov breg=reg ;                  \
+        br.cond.sptk.many breg
+
+#define BRANCH_PROC(sym, reg, breg)                             \
+        DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
+        GLOBAL_ENTRY(paravirt_ ## sym) ;                        \
+                BRANCH(paravirt_ ## sym ## _targ, reg, breg) ;  \
+        END(paravirt_ ## sym)
+
+#define BRANCH_PROC_UNWINFO(sym, reg, breg)                     \
+        DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
+        GLOBAL_ENTRY(paravirt_ ## sym) ;                        \
+                PT_REGS_UNWIND_INFO(0) ;                        \
+                BRANCH(paravirt_ ## sym ## _targ, reg, breg) ;  \
+        END(paravirt_ ## sym)
+
+
+BRANCH_PROC(switch_to, r22, b7)
+BRANCH_PROC_UNWINFO(leave_syscall, r22, b7)
+BRANCH_PROC(work_processed_syscall, r2, b7)
+BRANCH_PROC_UNWINFO(leave_kernel, r22, b7)