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| author | Roman Zippel <zippel@linux-m68k.org> | 2007-05-31 09:40:50 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-31 16:58:13 +0200 |
| commit | fbe9c9612930e0604dc99ef2da7e063fa3278817 (patch) | |
| tree | b11a5a03edd4a61fc5c71b2b38402cdfe914de22 /include/asm-m68k/module.h | |
| parent | ntfs_init_locked_inode(): fix array indexing (diff) | |
| download | linux-fbe9c9612930e0604dc99ef2da7e063fa3278817.tar.xz linux-fbe9c9612930e0604dc99ef2da7e063fa3278817.zip | |
m68k: runtime patching infrastructure
Add the basic infrastructure to allow runtime patching of kernel and modules
to optimize a few functions with parameters, which are only calculated once
during bootup and are otherwise constant. Use this for the conversion between
virtual and physical addresses.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-m68k/module.h')
| -rw-r--r-- | include/asm-m68k/module.h | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/include/asm-m68k/module.h b/include/asm-m68k/module.h index c6d75af2d8d3..71a1f76ac891 100644 --- a/include/asm-m68k/module.h +++ b/include/asm-m68k/module.h @@ -1,7 +1,38 @@ #ifndef _ASM_M68K_MODULE_H #define _ASM_M68K_MODULE_H -struct mod_arch_specific { }; + +struct mod_arch_specific { + struct m68k_fixup_info *fixup_start, *fixup_end; +}; + +#define MODULE_ARCH_INIT { \ + .fixup_start = __start_fixup, \ + .fixup_end = __stop_fixup, \ +} + #define Elf_Shdr Elf32_Shdr #define Elf_Sym Elf32_Sym #define Elf_Ehdr Elf32_Ehdr + + +enum m68k_fixup_type { + m68k_fixup_memoffset, +}; + +struct m68k_fixup_info { + enum m68k_fixup_type type; + void *addr; +}; + +#define m68k_fixup(type, addr) \ + " .section \".m68k_fixup\",\"aw\"\n" \ + " .long " #type "," #addr "\n" \ + " .previous\n" + +extern struct m68k_fixup_info __start_fixup[], __stop_fixup[]; + +struct module; +extern void module_fixup(struct module *mod, struct m68k_fixup_info *start, + struct m68k_fixup_info *end); + #endif /* _ASM_M68K_MODULE_H */ |