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/******************************************************************************
* 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 <linux/init.h>
#include <asm/asmmacro.h>
#include <asm/asm-offsets.h>
#include <asm/paravirt_privop.h>
#include <asm/paravirt_patch.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, type) \
PARAVIRT_PATCH_SITE_BR(PARAVIRT_PATCH_TYPE_BR_ ## type) ; \
;; \
movl reg=targ ; \
;; \
ld8 reg=[reg] ; \
;; \
mov breg=reg ; \
br.cond.sptk.many breg
#define BRANCH_PROC(sym, reg, breg, type) \
DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
GLOBAL_ENTRY(paravirt_ ## sym) ; \
BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
END(paravirt_ ## sym)
#define BRANCH_PROC_UNWINFO(sym, reg, breg, type) \
DATA8(paravirt_ ## sym ## _targ, ia64_native_ ## sym) ; \
GLOBAL_ENTRY(paravirt_ ## sym) ; \
PT_REGS_UNWIND_INFO(0) ; \
BRANCH(paravirt_ ## sym ## _targ, reg, breg, type) ; \
END(paravirt_ ## sym)
BRANCH_PROC(switch_to, r22, b7, SWITCH_TO)
BRANCH_PROC_UNWINFO(leave_syscall, r22, b7, LEAVE_SYSCALL)
BRANCH_PROC(work_processed_syscall, r2, b7, WORK_PROCESSED_SYSCALL)
BRANCH_PROC_UNWINFO(leave_kernel, r22, b7, LEAVE_KERNEL)
#ifdef CONFIG_MODULES
#define __INIT_OR_MODULE .text
#define __INITDATA_OR_MODULE .data
#else
#define __INIT_OR_MODULE __INIT
#define __INITDATA_OR_MODULE __INITDATA
#endif /* CONFIG_MODULES */
__INIT_OR_MODULE
GLOBAL_ENTRY(paravirt_fc_i)
fc.i r32
br.ret.sptk.many rp
END(paravirt_fc_i)
__FINIT
__INIT_OR_MODULE
.align 32
GLOBAL_ENTRY(paravirt_nop_b_inst_bundle)
{
nop.b 0
nop.b 0
nop.b 0
}
END(paravirt_nop_b_inst_bundle)
__FINIT
/* NOTE: nop.[mfi] has same format */
__INIT_OR_MODULE
GLOBAL_ENTRY(paravirt_nop_mfi_inst_bundle)
{
nop.m 0
nop.f 0
nop.i 0
}
END(paravirt_nop_mfi_inst_bundle)
__FINIT
__INIT_OR_MODULE
GLOBAL_ENTRY(paravirt_nop_bundle)
paravirt_nop_bundle_start:
{
nop 0
nop 0
nop 0
}
paravirt_nop_bundle_end:
END(paravirt_nop_bundle)
__FINIT
__INITDATA_OR_MODULE
.align 8
.global paravirt_nop_bundle_size
paravirt_nop_bundle_size:
data8 paravirt_nop_bundle_end - paravirt_nop_bundle_start
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