| #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; \ |
| .ifgt (label##4b-label##3b)-(label##2b-label##1b); \ |
| .error "Feature section else case larger than body"; \ |
| .endif; \ |
| .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 */ |
