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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [m68k/] [mm/] [extable.c] - Rev 1765
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/* * linux/arch/m68k/mm/extable.c */ #include <linux/config.h> #include <linux/module.h> #include <asm/uaccess.h> extern const struct exception_table_entry __start___ex_table[]; extern const struct exception_table_entry __stop___ex_table[]; static inline unsigned long search_one_table(const struct exception_table_entry *first, const struct exception_table_entry *last, unsigned long value) { while (first <= last) { const struct exception_table_entry *mid; long diff; mid = (last - first) / 2 + first; diff = value - mid->insn; if (diff >= 0 && diff <= 2) return mid->fixup; else if (diff > 0) first = mid+1; else last = mid-1; } return 0; } unsigned long search_exception_table(unsigned long addr) { unsigned long ret; #ifndef CONFIG_MODULES /* There is only the kernel to search. */ ret = search_one_table(__start___ex_table, __stop___ex_table-1, addr); if (ret) return ret; #else /* The kernel is the last "module" -- no need to treat it special. */ struct module *mp; for (mp = module_list; mp != NULL; mp = mp->next) { if (mp->ex_table_start == NULL) continue; ret = search_one_table(mp->ex_table_start, mp->ex_table_end-1, addr); if (ret) return ret; } #endif return 0; }