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| 2 | Copyright (C) 2001 Rusty Russell, 2002 Rusty Russell IBM.
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| 3 |
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| 4 | This program is free software; you can redistribute it and/or modify
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| 5 | it under the terms of the GNU General Public License as published by
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| 6 | the Free Software Foundation; either version 2 of the License, or
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| 7 | (at your option) any later version.
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| 8 |
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| 9 | This program is distributed in the hope that it will be useful,
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License
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| 15 | along with this program; if not, write to the Free Software
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| 16 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 17 |
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| 18 | #include <linux/module.h>
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| 19 | #include <linux/init.h>
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| 20 | #include <asm/uaccess.h>
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| 21 | #include <asm/sections.h>
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| 22 |
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| 23 | extern struct exception_table_entry __start___ex_table[];
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| 24 | extern struct exception_table_entry __stop___ex_table[];
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| 25 |
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| 26 |
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| 27 | void __init sort_main_extable(void)
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| 28 | {
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| 29 | sort_extable(__start___ex_table, __stop___ex_table);
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| 30 | }
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| 31 |
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| 32 |
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| 33 | const struct exception_table_entry *search_exception_tables(unsigned long addr)
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| 34 | {
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| 35 | const struct exception_table_entry *e;
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| 36 |
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| 37 | e = search_extable(__start___ex_table, __stop___ex_table-1, addr);
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| 38 | if (!e)
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| 39 | e = search_module_extables(addr);
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| 40 | return e;
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| 41 | }
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| 42 |
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| 43 | static int core_kernel_text(unsigned long addr)
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| 44 | {
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| 45 | if (addr >= (unsigned long)_stext &&
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| 46 | addr <= (unsigned long)_etext)
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| 47 | return 1;
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| 48 |
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| 49 | if (addr >= (unsigned long)_sinittext &&
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| 50 | addr <= (unsigned long)_einittext)
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| 51 | return 1;
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| 52 | return 0;
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| 53 | }
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| 54 |
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| 55 | int __kernel_text_address(unsigned long addr)
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| 56 | {
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| 57 | if (core_kernel_text(addr))
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| 58 | return 1;
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| 59 | return __module_text_address(addr) != NULL;
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| 60 | }
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| 61 |
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| 62 | int kernel_text_address(unsigned long addr)
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| 63 | {
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| 64 | if (core_kernel_text(addr))
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| 65 | return 1;
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| 66 | return module_text_address(addr) != NULL;
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| 67 | }
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