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c5157e58 ME |
1 | #ifndef __ASM_POWERPC_FEATURE_FIXUPS_H |
2 | #define __ASM_POWERPC_FEATURE_FIXUPS_H | |
3 | ||
4 | /* | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version | |
8 | * 2 of the License, or (at your option) any later version. | |
9 | */ | |
10 | ||
11 | #ifdef __ASSEMBLY__ | |
12 | ||
13 | /* | |
14 | * Feature section common macros | |
15 | * | |
16 | * Note that the entries now contain offsets between the table entry | |
17 | * and the code rather than absolute code pointers in order to be | |
18 | * useable with the vdso shared library. There is also an assumption | |
19 | * that values will be negative, that is, the fixup table has to be | |
20 | * located after the code it fixes up. | |
21 | */ | |
c1137c37 | 22 | #if defined(CONFIG_PPC64) && !defined(__powerpc64__) |
c5157e58 | 23 | /* 64 bits kernel, 32 bits code (ie. vdso32) */ |
c1137c37 ME |
24 | #define FTR_ENTRY_LONG .llong |
25 | #define FTR_ENTRY_OFFSET .long 0xffffffff; .long | |
26 | #else | |
27 | /* 64 bit kernel 64 bit code, or 32 bit kernel 32 bit code */ | |
28 | #define FTR_ENTRY_LONG PPC_LONG | |
29 | #define FTR_ENTRY_OFFSET PPC_LONG | |
30 | #endif | |
31 | ||
fac23fe4 ME |
32 | #define START_FTR_SECTION(label) label##1: |
33 | ||
34 | #define FTR_SECTION_ELSE_NESTED(label) \ | |
35 | label##2: \ | |
36 | .pushsection __ftr_alt_##label,"a"; \ | |
37 | .align 2; \ | |
38 | label##3: | |
39 | ||
c5157e58 | 40 | #define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \ |
fac23fe4 ME |
41 | label##4: \ |
42 | .popsection; \ | |
43 | .pushsection sect,"a"; \ | |
c5157e58 | 44 | .align 3; \ |
fac23fe4 | 45 | label##5: \ |
c1137c37 ME |
46 | FTR_ENTRY_LONG msk; \ |
47 | FTR_ENTRY_LONG val; \ | |
fac23fe4 ME |
48 | FTR_ENTRY_OFFSET label##1b-label##5b; \ |
49 | FTR_ENTRY_OFFSET label##2b-label##5b; \ | |
50 | FTR_ENTRY_OFFSET label##3b-label##5b; \ | |
51 | FTR_ENTRY_OFFSET label##4b-label##5b; \ | |
52 | .popsection; | |
c5157e58 ME |
53 | |
54 | ||
55 | /* CPU feature dependent sections */ | |
fac23fe4 ME |
56 | #define BEGIN_FTR_SECTION_NESTED(label) START_FTR_SECTION(label) |
57 | #define BEGIN_FTR_SECTION START_FTR_SECTION(97) | |
c5157e58 | 58 | |
fac23fe4 ME |
59 | #define END_FTR_SECTION_NESTED(msk, val, label) \ |
60 | FTR_SECTION_ELSE_NESTED(label) \ | |
c5157e58 ME |
61 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup) |
62 | ||
63 | #define END_FTR_SECTION(msk, val) \ | |
64 | END_FTR_SECTION_NESTED(msk, val, 97) | |
65 | ||
66 | #define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk)) | |
67 | #define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0) | |
68 | ||
fac23fe4 ME |
69 | /* CPU feature sections with alternatives, use BEGIN_FTR_SECTION to start */ |
70 | #define FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97) | |
71 | #define ALT_FTR_SECTION_END_NESTED(msk, val, label) \ | |
72 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup) | |
73 | #define ALT_FTR_SECTION_END_NESTED_IFSET(msk, label) \ | |
74 | ALT_FTR_SECTION_END_NESTED(msk, msk, label) | |
75 | #define ALT_FTR_SECTION_END_NESTED_IFCLR(msk, label) \ | |
76 | ALT_FTR_SECTION_END_NESTED(msk, 0, label) | |
77 | #define ALT_FTR_SECTION_END(msk, val) \ | |
78 | ALT_FTR_SECTION_END_NESTED(msk, val, 97) | |
79 | #define ALT_FTR_SECTION_END_IFSET(msk) \ | |
80 | ALT_FTR_SECTION_END_NESTED_IFSET(msk, 97) | |
81 | #define ALT_FTR_SECTION_END_IFCLR(msk) \ | |
82 | ALT_FTR_SECTION_END_NESTED_IFCLR(msk, 97) | |
c5157e58 | 83 | |
7c03d653 BH |
84 | /* MMU feature dependent sections */ |
85 | #define BEGIN_MMU_FTR_SECTION_NESTED(label) START_FTR_SECTION(label) | |
86 | #define BEGIN_MMU_FTR_SECTION START_FTR_SECTION(97) | |
87 | ||
88 | #define END_MMU_FTR_SECTION_NESTED(msk, val, label) \ | |
89 | FTR_SECTION_ELSE_NESTED(label) \ | |
90 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __mmu_ftr_fixup) | |
91 | ||
92 | #define END_MMU_FTR_SECTION(msk, val) \ | |
93 | END_MMU_FTR_SECTION_NESTED(msk, val, 97) | |
94 | ||
95 | #define END_MMU_FTR_SECTION_IFSET(msk) END_MMU_FTR_SECTION((msk), (msk)) | |
96 | #define END_MMU_FTR_SECTION_IFCLR(msk) END_MMU_FTR_SECTION((msk), 0) | |
97 | ||
98 | /* MMU feature sections with alternatives, use BEGIN_FTR_SECTION to start */ | |
99 | #define MMU_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label) | |
100 | #define MMU_FTR_SECTION_ELSE MMU_FTR_SECTION_ELSE_NESTED(97) | |
101 | #define ALT_MMU_FTR_SECTION_END_NESTED(msk, val, label) \ | |
102 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __mmu_ftr_fixup) | |
103 | #define ALT_MMU_FTR_SECTION_END_NESTED_IFSET(msk, label) \ | |
104 | ALT_MMU_FTR_SECTION_END_NESTED(msk, msk, label) | |
105 | #define ALT_MMU_FTR_SECTION_END_NESTED_IFCLR(msk, label) \ | |
106 | ALT_MMU_FTR_SECTION_END_NESTED(msk, 0, label) | |
107 | #define ALT_MMU_FTR_SECTION_END(msk, val) \ | |
108 | ALT_MMU_FTR_SECTION_END_NESTED(msk, val, 97) | |
109 | #define ALT_MMU_FTR_SECTION_END_IFSET(msk) \ | |
110 | ALT_MMU_FTR_SECTION_END_NESTED_IFSET(msk, 97) | |
111 | #define ALT_MMU_FTR_SECTION_END_IFCLR(msk) \ | |
112 | ALT_MMU_FTR_SECTION_END_NESTED_IFCLR(msk, 97) | |
113 | ||
c5157e58 | 114 | /* Firmware feature dependent sections */ |
fac23fe4 ME |
115 | #define BEGIN_FW_FTR_SECTION_NESTED(label) START_FTR_SECTION(label) |
116 | #define BEGIN_FW_FTR_SECTION START_FTR_SECTION(97) | |
c5157e58 | 117 | |
fac23fe4 ME |
118 | #define END_FW_FTR_SECTION_NESTED(msk, val, label) \ |
119 | FTR_SECTION_ELSE_NESTED(label) \ | |
c5157e58 ME |
120 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup) |
121 | ||
122 | #define END_FW_FTR_SECTION(msk, val) \ | |
123 | END_FW_FTR_SECTION_NESTED(msk, val, 97) | |
124 | ||
125 | #define END_FW_FTR_SECTION_IFSET(msk) END_FW_FTR_SECTION((msk), (msk)) | |
126 | #define END_FW_FTR_SECTION_IFCLR(msk) END_FW_FTR_SECTION((msk), 0) | |
127 | ||
fac23fe4 ME |
128 | /* Firmware feature sections with alternatives */ |
129 | #define FW_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label) | |
130 | #define FW_FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97) | |
131 | #define ALT_FW_FTR_SECTION_END_NESTED(msk, val, label) \ | |
132 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup) | |
133 | #define ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, label) \ | |
134 | ALT_FW_FTR_SECTION_END_NESTED(msk, msk, label) | |
135 | #define ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, label) \ | |
136 | ALT_FW_FTR_SECTION_END_NESTED(msk, 0, label) | |
137 | #define ALT_FW_FTR_SECTION_END(msk, val) \ | |
138 | ALT_FW_FTR_SECTION_END_NESTED(msk, val, 97) | |
139 | #define ALT_FW_FTR_SECTION_END_IFSET(msk) \ | |
140 | ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, 97) | |
141 | #define ALT_FW_FTR_SECTION_END_IFCLR(msk) \ | |
142 | ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97) | |
143 | ||
c5157e58 ME |
144 | #endif /* __ASSEMBLY__ */ |
145 | ||
2d1b2027 KG |
146 | /* LWSYNC feature sections */ |
147 | #define START_LWSYNC_SECTION(label) label##1: | |
148 | #define MAKE_LWSYNC_SECTION_ENTRY(label, sect) \ | |
149 | label##2: \ | |
150 | .pushsection sect,"a"; \ | |
151 | .align 2; \ | |
152 | label##3: \ | |
153 | .long label##1b-label##3b; \ | |
154 | .popsection; | |
155 | ||
c5157e58 | 156 | #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */ |