1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
#ifndef __ASM_POWERPC_FEATURE_FIXUPS_H
#define __ASM_POWERPC_FEATURE_FIXUPS_H
/*
* 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.
*/
/*
* Feature section common macros
*
* Note that the entries now contain offsets between the table entry
* and the code rather than absolute code pointers in order to be
* useable with the vdso shared library. There is also an assumption
* that values will be negative, that is, the fixup table has to be
* located after the code it fixes up.
*/
#if defined(CONFIG_PPC64) && !defined(__powerpc64__)
/* 64 bits kernel, 32 bits code (ie. vdso32) */
#define FTR_ENTRY_LONG .llong
#define FTR_ENTRY_OFFSET .long 0xffffffff; .long
#elif defined(CONFIG_PPC64)
#define FTR_ENTRY_LONG .llong
#define FTR_ENTRY_OFFSET .llong
#else
#define FTR_ENTRY_LONG .long
#define FTR_ENTRY_OFFSET .long
#endif
#define START_FTR_SECTION(label) label##1:
#define FTR_SECTION_ELSE_NESTED(label) \
label##2: \
.pushsection __ftr_alt_##label,"a"; \
.align 2; \
label##3:
#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
label##4: \
.popsection; \
.pushsection sect,"a"; \
.align 3; \
label##5: \
FTR_ENTRY_LONG msk; \
FTR_ENTRY_LONG val; \
FTR_ENTRY_OFFSET label##1b-label##5b; \
FTR_ENTRY_OFFSET label##2b-label##5b; \
FTR_ENTRY_OFFSET label##3b-label##5b; \
FTR_ENTRY_OFFSET label##4b-label##5b; \
.popsection;
/* CPU feature dependent sections */
#define BEGIN_FTR_SECTION_NESTED(label) START_FTR_SECTION(label)
#define BEGIN_FTR_SECTION START_FTR_SECTION(97)
#define END_FTR_SECTION_NESTED(msk, val, label) \
FTR_SECTION_ELSE_NESTED(label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
#define END_FTR_SECTION(msk, val) \
END_FTR_SECTION_NESTED(msk, val, 97)
#define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk))
#define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0)
/* CPU feature sections with alternatives, use BEGIN_FTR_SECTION to start */
#define FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97)
#define ALT_FTR_SECTION_END_NESTED(msk, val, label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
#define ALT_FTR_SECTION_END_NESTED_IFSET(msk, label) \
ALT_FTR_SECTION_END_NESTED(msk, msk, label)
#define ALT_FTR_SECTION_END_NESTED_IFCLR(msk, label) \
ALT_FTR_SECTION_END_NESTED(msk, 0, label)
#define ALT_FTR_SECTION_END(msk, val) \
ALT_FTR_SECTION_END_NESTED(msk, val, 97)
#define ALT_FTR_SECTION_END_IFSET(msk) \
ALT_FTR_SECTION_END_NESTED_IFSET(msk, 97)
#define ALT_FTR_SECTION_END_IFCLR(msk) \
ALT_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
/* MMU feature dependent sections */
#define BEGIN_MMU_FTR_SECTION_NESTED(label) START_FTR_SECTION(label)
#define BEGIN_MMU_FTR_SECTION START_FTR_SECTION(97)
#define END_MMU_FTR_SECTION_NESTED(msk, val, label) \
FTR_SECTION_ELSE_NESTED(label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __mmu_ftr_fixup)
#define END_MMU_FTR_SECTION(msk, val) \
END_MMU_FTR_SECTION_NESTED(msk, val, 97)
#define END_MMU_FTR_SECTION_IFSET(msk) END_MMU_FTR_SECTION((msk), (msk))
#define END_MMU_FTR_SECTION_IFCLR(msk) END_MMU_FTR_SECTION((msk), 0)
/* MMU feature sections with alternatives, use BEGIN_FTR_SECTION to start */
#define MMU_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label)
#define MMU_FTR_SECTION_ELSE MMU_FTR_SECTION_ELSE_NESTED(97)
#define ALT_MMU_FTR_SECTION_END_NESTED(msk, val, label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __mmu_ftr_fixup)
#define ALT_MMU_FTR_SECTION_END_NESTED_IFSET(msk, label) \
ALT_MMU_FTR_SECTION_END_NESTED(msk, msk, label)
#define ALT_MMU_FTR_SECTION_END_NESTED_IFCLR(msk, label) \
ALT_MMU_FTR_SECTION_END_NESTED(msk, 0, label)
#define ALT_MMU_FTR_SECTION_END(msk, val) \
ALT_MMU_FTR_SECTION_END_NESTED(msk, val, 97)
#define ALT_MMU_FTR_SECTION_END_IFSET(msk) \
ALT_MMU_FTR_SECTION_END_NESTED_IFSET(msk, 97)
#define ALT_MMU_FTR_SECTION_END_IFCLR(msk) \
ALT_MMU_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
/* Firmware feature dependent sections */
#define BEGIN_FW_FTR_SECTION_NESTED(label) START_FTR_SECTION(label)
#define BEGIN_FW_FTR_SECTION START_FTR_SECTION(97)
#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
FTR_SECTION_ELSE_NESTED(label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
#define END_FW_FTR_SECTION(msk, val) \
END_FW_FTR_SECTION_NESTED(msk, val, 97)
#define END_FW_FTR_SECTION_IFSET(msk) END_FW_FTR_SECTION((msk), (msk))
#define END_FW_FTR_SECTION_IFCLR(msk) END_FW_FTR_SECTION((msk), 0)
/* Firmware feature sections with alternatives */
#define FW_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label)
#define FW_FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97)
#define ALT_FW_FTR_SECTION_END_NESTED(msk, val, label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
#define ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, label) \
ALT_FW_FTR_SECTION_END_NESTED(msk, msk, label)
#define ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, label) \
ALT_FW_FTR_SECTION_END_NESTED(msk, 0, label)
#define ALT_FW_FTR_SECTION_END(msk, val) \
ALT_FW_FTR_SECTION_END_NESTED(msk, val, 97)
#define ALT_FW_FTR_SECTION_END_IFSET(msk) \
ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, 97)
#define ALT_FW_FTR_SECTION_END_IFCLR(msk) \
ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
#ifndef __ASSEMBLY__
#define ASM_MMU_FTR_IF(section_if, section_else, msk, val) \
stringify_in_c(BEGIN_MMU_FTR_SECTION) \
section_if "; " \
stringify_in_c(MMU_FTR_SECTION_ELSE) \
section_else "; " \
stringify_in_c(ALT_MMU_FTR_SECTION_END((msk), (val)))
#define ASM_MMU_FTR_IFSET(section_if, section_else, msk) \
ASM_MMU_FTR_IF(section_if, section_else, (msk), (msk))
#define ASM_MMU_FTR_IFCLR(section_if, section_else, msk) \
ASM_MMU_FTR_IF(section_if, section_else, (msk), 0)
#endif /* __ASSEMBLY__ */
/* LWSYNC feature sections */
#define START_LWSYNC_SECTION(label) label##1:
#define MAKE_LWSYNC_SECTION_ENTRY(label, sect) \
label##2: \
.pushsection sect,"a"; \
.align 2; \
label##3: \
FTR_ENTRY_OFFSET label##1b-label##3b; \
.popsection;
#endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */
|
