1 /******************************************************************************
2 * linux/arch/ia64/xen/paravirtentry.S
4 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <asm/asmmacro.h>
24 #include <asm/asm-offsets.h>
27 #define DATA8(sym, init_value) \
28 .pushsection .data.read_mostly ; \
35 #define BRANCH(targ, reg, breg) \
41 br.cond.sptk.many breg
43 #define BRANCH_PROC(sym, reg, breg) \
44 DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
45 GLOBAL_ENTRY(paravirt_ ## sym) ; \
46 BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \
49 #define BRANCH_PROC_UNWINFO(sym, reg, breg) \
50 DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
51 GLOBAL_ENTRY(paravirt_ ## sym) ; \
52 PT_REGS_UNWIND_INFO(0) ; \
53 BRANCH(paravirt_ ## sym ## _targ, reg, breg) ; \
57 BRANCH_PROC(switch_to, r22, b7)
58 BRANCH_PROC_UNWINFO(leave_syscall, r22, b7)
59 BRANCH_PROC(work_processed_syscall, r2, b7)
60 BRANCH_PROC_UNWINFO(leave_kernel, r22, b7)