projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| c5157e58 ME |
11 | /* |
| 12 | * Feature section common macros | |
| 13 | * | |
| 14 | * Note that the entries now contain offsets between the table entry | |
| 15 | * and the code rather than absolute code pointers in order to be | |
| 16 | * useable with the vdso shared library. There is also an assumption | |
| 17 | * that values will be negative, that is, the fixup table has to be | |
| 18 | * located after the code it fixes up. | |
| 19 | */ | |
| c1137c37 | 20 | #if defined(CONFIG_PPC64) && !defined(__powerpc64__) |
| c5157e58 | 21 | /* 64 bits kernel, 32 bits code (ie. vdso32) */ |
| c1137c37 ME |
22 | #define FTR_ENTRY_LONG .llong |
| 23 | #define FTR_ENTRY_OFFSET .long 0xffffffff; .long | |
| af20aeb1 MM |
24 | #elif defined(CONFIG_PPC64) |
| 25 | #define FTR_ENTRY_LONG .llong | |
| 26 | #define FTR_ENTRY_OFFSET .llong | |
| c1137c37 | 27 | #else |
| af20aeb1 MM |
28 | #define FTR_ENTRY_LONG .long |
| 29 | #define FTR_ENTRY_OFFSET .long | |
| c1137c37 ME |
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 | ||
| c0337288 ME |
40 | #define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \ |
| 41 | label##4: \ | |
| 42 | .popsection; \ | |
| 43 | .pushsection sect,"a"; \ | |
| 44 | .align 3; \ | |
| 45 | label##5: \ | |
| 46 | FTR_ENTRY_LONG msk; \ | |
| 47 | FTR_ENTRY_LONG val; \ | |
| 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; \ | |
| b3e6b5df | 52 | .ifgt (label##4b- label##3b)-(label##2b- label##1b); \ |
| c0337288 ME |
53 | .error "Feature section else case larger than body"; \ |
| 54 | .endif; \ | |
| fac23fe4 | 55 | .popsection; |
| c5157e58 ME |
56 | |
| 57 | ||
| 58 | /* CPU feature dependent sections */ | |
| fac23fe4 ME |
59 | #define BEGIN_FTR_SECTION_NESTED(label) START_FTR_SECTION(label) |
| 60 | #define BEGIN_FTR_SECTION START_FTR_SECTION(97) | |
| c5157e58 | 61 | |
| fac23fe4 ME |
62 | #define END_FTR_SECTION_NESTED(msk, val, label) \ |
| 63 | FTR_SECTION_ELSE_NESTED(label) \ | |
| c5157e58 ME |
64 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup) |
| 65 | ||
| 66 | #define END_FTR_SECTION(msk, val) \ | |
| 67 | END_FTR_SECTION_NESTED(msk, val, 97) | |
| 68 | ||
| 69 | #define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk)) | |
| 70 | #define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0) | |
| 71 | ||
| fac23fe4 ME |
72 | /* CPU feature sections with alternatives, use BEGIN_FTR_SECTION to start */ |
| 73 | #define FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97) | |
| 74 | #define ALT_FTR_SECTION_END_NESTED(msk, val, label) \ | |
| 75 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup) | |
| 76 | #define ALT_FTR_SECTION_END_NESTED_IFSET(msk, label) \ | |
| 77 | ALT_FTR_SECTION_END_NESTED(msk, msk, label) | |
| 78 | #define ALT_FTR_SECTION_END_NESTED_IFCLR(msk, label) \ | |
| 79 | ALT_FTR_SECTION_END_NESTED(msk, 0, label) | |
| 80 | #define ALT_FTR_SECTION_END(msk, val) \ | |
| 81 | ALT_FTR_SECTION_END_NESTED(msk, val, 97) | |
| 82 | #define ALT_FTR_SECTION_END_IFSET(msk) \ | |
| 83 | ALT_FTR_SECTION_END_NESTED_IFSET(msk, 97) | |
| 84 | #define ALT_FTR_SECTION_END_IFCLR(msk) \ | |
| 85 | ALT_FTR_SECTION_END_NESTED_IFCLR(msk, 97) | |
| c5157e58 | 86 | |
| 7c03d653 BH |
87 | /* MMU feature dependent sections */ |
| 88 | #define BEGIN_MMU_FTR_SECTION_NESTED(label) START_FTR_SECTION(label) | |
| 89 | #define BEGIN_MMU_FTR_SECTION START_FTR_SECTION(97) | |
| 90 | ||
| 91 | #define END_MMU_FTR_SECTION_NESTED(msk, val, label) \ | |
| 92 | FTR_SECTION_ELSE_NESTED(label) \ | |
| 93 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __mmu_ftr_fixup) | |
| 94 | ||
| 95 | #define END_MMU_FTR_SECTION(msk, val) \ | |
| 96 | END_MMU_FTR_SECTION_NESTED(msk, val, 97) | |
| 97 | ||
| 98 | #define END_MMU_FTR_SECTION_IFSET(msk) END_MMU_FTR_SECTION((msk), (msk)) | |
| 99 | #define END_MMU_FTR_SECTION_IFCLR(msk) END_MMU_FTR_SECTION((msk), 0) | |
| 100 | ||
| 101 | /* MMU feature sections with alternatives, use BEGIN_FTR_SECTION to start */ | |
| 102 | #define MMU_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label) | |
| 103 | #define MMU_FTR_SECTION_ELSE MMU_FTR_SECTION_ELSE_NESTED(97) | |
| 104 | #define ALT_MMU_FTR_SECTION_END_NESTED(msk, val, label) \ | |
| 105 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __mmu_ftr_fixup) | |
| 106 | #define ALT_MMU_FTR_SECTION_END_NESTED_IFSET(msk, label) \ | |
| 107 | ALT_MMU_FTR_SECTION_END_NESTED(msk, msk, label) | |
| 108 | #define ALT_MMU_FTR_SECTION_END_NESTED_IFCLR(msk, label) \ | |
| 109 | ALT_MMU_FTR_SECTION_END_NESTED(msk, 0, label) | |
| 110 | #define ALT_MMU_FTR_SECTION_END(msk, val) \ | |
| 111 | ALT_MMU_FTR_SECTION_END_NESTED(msk, val, 97) | |
| 112 | #define ALT_MMU_FTR_SECTION_END_IFSET(msk) \ | |
| 113 | ALT_MMU_FTR_SECTION_END_NESTED_IFSET(msk, 97) | |
| 114 | #define ALT_MMU_FTR_SECTION_END_IFCLR(msk) \ | |
| 115 | ALT_MMU_FTR_SECTION_END_NESTED_IFCLR(msk, 97) | |
| 116 | ||
| c5157e58 | 117 | /* Firmware feature dependent sections */ |
| fac23fe4 ME |
118 | #define BEGIN_FW_FTR_SECTION_NESTED(label) START_FTR_SECTION(label) |
| 119 | #define BEGIN_FW_FTR_SECTION START_FTR_SECTION(97) | |
| c5157e58 | 120 | |
| fac23fe4 ME |
121 | #define END_FW_FTR_SECTION_NESTED(msk, val, label) \ |
| 122 | FTR_SECTION_ELSE_NESTED(label) \ | |
| c5157e58 ME |
123 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup) |
| 124 | ||
| 125 | #define END_FW_FTR_SECTION(msk, val) \ | |
| 126 | END_FW_FTR_SECTION_NESTED(msk, val, 97) | |
| 127 | ||
| 128 | #define END_FW_FTR_SECTION_IFSET(msk) END_FW_FTR_SECTION((msk), (msk)) | |
| 129 | #define END_FW_FTR_SECTION_IFCLR(msk) END_FW_FTR_SECTION((msk), 0) | |
| 130 | ||
| fac23fe4 ME |
131 | /* Firmware feature sections with alternatives */ |
| 132 | #define FW_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label) | |
| 133 | #define FW_FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97) | |
| 134 | #define ALT_FW_FTR_SECTION_END_NESTED(msk, val, label) \ | |
| 135 | MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup) | |
| 136 | #define ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, label) \ | |
| 137 | ALT_FW_FTR_SECTION_END_NESTED(msk, msk, label) | |
| 138 | #define ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, label) \ | |
| 139 | ALT_FW_FTR_SECTION_END_NESTED(msk, 0, label) | |
| 140 | #define ALT_FW_FTR_SECTION_END(msk, val) \ | |
| 141 | ALT_FW_FTR_SECTION_END_NESTED(msk, val, 97) | |
| 142 | #define ALT_FW_FTR_SECTION_END_IFSET(msk) \ | |
| 143 | ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, 97) | |
| 144 | #define ALT_FW_FTR_SECTION_END_IFCLR(msk) \ | |
| 145 | ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97) | |
| 146 | ||
| af20aeb1 MM |
147 | #ifndef __ASSEMBLY__ |
| 148 | ||
| 149 | #define ASM_MMU_FTR_IF(section_if, section_else, msk, val) \ | |
| 150 | stringify_in_c(BEGIN_MMU_FTR_SECTION) \ | |
| 151 | section_if "; " \ | |
| 152 | stringify_in_c(MMU_FTR_SECTION_ELSE) \ | |
| 153 | section_else "; " \ | |
| 154 | stringify_in_c(ALT_MMU_FTR_SECTION_END((msk), (val))) | |
| 155 | ||
| 156 | #define ASM_MMU_FTR_IFSET(section_if, section_else, msk) \ | |
| 157 | ASM_MMU_FTR_IF(section_if, section_else, (msk), (msk)) | |
| 158 | ||
| 159 | #define ASM_MMU_FTR_IFCLR(section_if, section_else, msk) \ | |
| 160 | ASM_MMU_FTR_IF(section_if, section_else, (msk), 0) | |
| 161 | ||
| c5157e58 ME |
162 | #endif /* __ASSEMBLY__ */ |
| 163 | ||
| 2d1b2027 KG |
164 | /* LWSYNC feature sections */ |
| 165 | #define START_LWSYNC_SECTION(label) label##1: | |
| 166 | #define MAKE_LWSYNC_SECTION_ENTRY(label, sect) \ | |
| 167 | label##2: \ | |
| 168 | .pushsection sect,"a"; \ | |
| 169 | .align 2; \ | |
| 170 | label##3: \ | |
| 3d98ffbf | 171 | FTR_ENTRY_OFFSET label##1b-label##3b; \ |
| 2d1b2027 KG |
172 | .popsection; |
| 173 | ||
| c5157e58 | 174 | #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */ |