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authorRoman Zippel <zippel@linux-m68k.org>2007-05-31 00:40:50 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-31 07:58:13 -0700
commitfbe9c9612930e0604dc99ef2da7e063fa3278817 (patch)
treeb11a5a03edd4a61fc5c71b2b38402cdfe914de22 /include/asm-m68k/module.h
parent1fc799e1b4efdbc405d87d9f154d64d9bc299e5c (diff)
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.h33
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 */