Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/* 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 <linux/module.h>

#include <linux/init.h>

#include <asm/uaccess.h>

#include <asm/sections.h>

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;

}

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;

}