From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- kernel/extable.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 kernel/extable.c (limited to 'kernel/extable.c') diff --git a/kernel/extable.c b/kernel/extable.c new file mode 100644 index 00000000000..7501b531cee --- /dev/null +++ b/kernel/extable.c @@ -0,0 +1,67 @@ +/* Rewritten by Rusty Russell, on the backs of many others... + Copyright (C) 2001 Rusty Russell, 2002 Rusty Russell IBM. + + 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. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ +#include +#include +#include +#include + +extern struct exception_table_entry __start___ex_table[]; +extern struct exception_table_entry __stop___ex_table[]; + +/* Sort the kernel's built-in exception table */ +void __init sort_main_extable(void) +{ + sort_extable(__start___ex_table, __stop___ex_table); +} + +/* Given an address, look for it in the exception tables. */ +const struct exception_table_entry *search_exception_tables(unsigned long addr) +{ + const struct exception_table_entry *e; + + e = search_extable(__start___ex_table, __stop___ex_table-1, addr); + if (!e) + e = search_module_extables(addr); + return e; +} + +static int core_kernel_text(unsigned long addr) +{ + if (addr >= (unsigned long)_stext && + addr <= (unsigned long)_etext) + return 1; + + if (addr >= (unsigned long)_sinittext && + addr <= (unsigned long)_einittext) + return 1; + return 0; +} + +int __kernel_text_address(unsigned long addr) +{ + if (core_kernel_text(addr)) + return 1; + return __module_text_address(addr) != NULL; +} + +int kernel_text_address(unsigned long addr) +{ + if (core_kernel_text(addr)) + return 1; + return module_text_address(addr) != NULL; +} -- cgit v1.2.3