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
32 DECLARE(fsyscall);
33 DECLARE(brl_fsys_bubble_down);
34 DECLARE(vtop);
35 DECLARE(mckinley_e9);
36
37 extern 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
45 struct 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
55 unsigned long __init
paravirt_get_gate_patchlist(enum pv_gate_patchlist type)56 paravirt_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
77 void * __init
paravirt_get_gate_section(void)78 paravirt_get_gate_section(void)
79 {
80 return pv_patchdata.gate_section;
81 }
82