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/arch/ia64/kernel/paravirt_patchlist.c

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C | 81 lines | 50 code | 12 blank | 19 comment | 1 complexity | 59b8c50c4edf7654fca746ded787bed7 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/******************************************************************************
 2 * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
 3 *                    VA Linux Systems Japan K.K.
 4 *
 5 * This program is free software; you can redistribute it and/or modify
 6 * it under the terms of the GNU General Public License as published by
 7 * the Free Software Foundation; either version 2 of the License, or
 8 * (at your option) any later version.
 9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18 *
19 */
20
21#include <linux/bug.h>
22#include <linux/init.h>
23#include <linux/kernel.h>
24#include <asm/paravirt.h>
25
26#define DECLARE(name)						\
27	extern unsigned long					\
28		__ia64_native_start_gate_##name##_patchlist[];	\
29	extern unsigned long					\
30		__ia64_native_end_gate_##name##_patchlist[]
31
32DECLARE(fsyscall);
33DECLARE(brl_fsys_bubble_down);
34DECLARE(vtop);
35DECLARE(mckinley_e9);
36
37extern unsigned long __start_gate_section[];
38
39#define ASSIGN(name)							    \
40	.start_##name##_patchlist =					    \
41		(unsigned long)__ia64_native_start_gate_##name##_patchlist, \
42	.end_##name##_patchlist =					    \
43		(unsigned long)__ia64_native_end_gate_##name##_patchlist
44
45struct pv_patchdata pv_patchdata __initdata = {
46	ASSIGN(fsyscall),
47	ASSIGN(brl_fsys_bubble_down),
48	ASSIGN(vtop),
49	ASSIGN(mckinley_e9),
50
51	.gate_section = (void*)__start_gate_section,
52};
53
54
55unsigned long __init
56paravirt_get_gate_patchlist(enum pv_gate_patchlist type)
57{
58
59#define CASE(NAME, name)					\
60	case PV_GATE_START_##NAME:				\
61		return pv_patchdata.start_##name##_patchlist;	\
62	case PV_GATE_END_##NAME:				\
63		return pv_patchdata.end_##name##_patchlist;	\
64
65	switch (type) {
66		CASE(FSYSCALL, fsyscall);
67		CASE(BRL_FSYS_BUBBLE_DOWN, brl_fsys_bubble_down);
68		CASE(VTOP, vtop);
69		CASE(MCKINLEY_E9, mckinley_e9);
70	default:
71		BUG();
72		break;
73	}
74	return 0;
75}
76
77void * __init
78paravirt_get_gate_section(void)
79{
80	return pv_patchdata.gate_section;
81}