9641c7cc5a
MMUless systems have only one address space for all threads, so both the usual access_ok() checks, and the exception handling do not make much sense. Hence, discard the fixup and exception tables at link time, use memcpy/memset for the user copy/clearing functions, and define the permission check macros to be constants. Some of this patch was derived from the equivalent patch by Hyok S. Choi. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
187 lines
4.6 KiB
C
187 lines
4.6 KiB
C
/*
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* linux/arch/arm/kernel/armksyms.c
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*
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* Copyright (C) 2000 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/cryptohash.h>
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#include <linux/delay.h>
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#include <linux/in6.h>
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#include <linux/syscalls.h>
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#include <asm/checksum.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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/*
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* libgcc functions - functions that are used internally by the
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* compiler... (prototypes are not correct though, but that
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* doesn't really matter since they're not versioned).
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*/
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extern void __ashldi3(void);
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extern void __ashrdi3(void);
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extern void __divsi3(void);
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extern void __lshrdi3(void);
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extern void __modsi3(void);
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extern void __muldi3(void);
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extern void __ucmpdi2(void);
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extern void __udivsi3(void);
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extern void __umodsi3(void);
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extern void __do_div64(void);
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extern void __aeabi_idiv(void);
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extern void __aeabi_idivmod(void);
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extern void __aeabi_lasr(void);
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extern void __aeabi_llsl(void);
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extern void __aeabi_llsr(void);
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extern void __aeabi_lmul(void);
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extern void __aeabi_uidiv(void);
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extern void __aeabi_uidivmod(void);
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extern void __aeabi_ulcmp(void);
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extern void fpundefinstr(void);
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extern void fp_enter(void);
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/*
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* This has a special calling convention; it doesn't
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* modify any of the usual registers, except for LR.
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*/
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#define EXPORT_CRC_ALIAS(sym) __CRC_SYMBOL(sym, "")
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#define EXPORT_SYMBOL_ALIAS(sym,orig) \
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EXPORT_CRC_ALIAS(sym) \
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static const struct kernel_symbol __ksymtab_##sym \
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__attribute_used__ __attribute__((section("__ksymtab"))) = \
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{ (unsigned long)&orig, #sym };
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/*
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* floating point math emulator support.
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* These symbols will never change their calling convention...
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*/
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EXPORT_SYMBOL_ALIAS(kern_fp_enter,fp_enter);
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EXPORT_SYMBOL_ALIAS(fp_printk,printk);
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EXPORT_SYMBOL_ALIAS(fp_send_sig,send_sig);
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EXPORT_SYMBOL(__backtrace);
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/* platform dependent support */
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EXPORT_SYMBOL(__udelay);
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EXPORT_SYMBOL(__const_udelay);
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/* networking */
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EXPORT_SYMBOL(csum_partial);
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EXPORT_SYMBOL(csum_partial_copy_nocheck);
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EXPORT_SYMBOL(__csum_ipv6_magic);
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/* io */
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#ifndef __raw_readsb
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EXPORT_SYMBOL(__raw_readsb);
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#endif
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#ifndef __raw_readsw
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EXPORT_SYMBOL(__raw_readsw);
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#endif
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#ifndef __raw_readsl
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EXPORT_SYMBOL(__raw_readsl);
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#endif
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#ifndef __raw_writesb
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EXPORT_SYMBOL(__raw_writesb);
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#endif
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#ifndef __raw_writesw
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EXPORT_SYMBOL(__raw_writesw);
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#endif
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#ifndef __raw_writesl
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EXPORT_SYMBOL(__raw_writesl);
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#endif
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/* string / mem functions */
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EXPORT_SYMBOL(strchr);
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EXPORT_SYMBOL(strrchr);
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(memmove);
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EXPORT_SYMBOL(memchr);
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EXPORT_SYMBOL(__memzero);
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/* user mem (segment) */
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EXPORT_SYMBOL(__strnlen_user);
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EXPORT_SYMBOL(__strncpy_from_user);
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#ifdef CONFIG_MMU
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EXPORT_SYMBOL(__copy_from_user);
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EXPORT_SYMBOL(__copy_to_user);
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EXPORT_SYMBOL(__clear_user);
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EXPORT_SYMBOL(__get_user_1);
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EXPORT_SYMBOL(__get_user_2);
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EXPORT_SYMBOL(__get_user_4);
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EXPORT_SYMBOL(__put_user_1);
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EXPORT_SYMBOL(__put_user_2);
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EXPORT_SYMBOL(__put_user_4);
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EXPORT_SYMBOL(__put_user_8);
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#endif
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/* crypto hash */
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EXPORT_SYMBOL(sha_transform);
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/* gcc lib functions */
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EXPORT_SYMBOL(__ashldi3);
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EXPORT_SYMBOL(__ashrdi3);
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EXPORT_SYMBOL(__divsi3);
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EXPORT_SYMBOL(__lshrdi3);
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EXPORT_SYMBOL(__modsi3);
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EXPORT_SYMBOL(__muldi3);
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EXPORT_SYMBOL(__ucmpdi2);
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EXPORT_SYMBOL(__udivsi3);
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EXPORT_SYMBOL(__umodsi3);
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EXPORT_SYMBOL(__do_div64);
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#ifdef CONFIG_AEABI
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EXPORT_SYMBOL(__aeabi_idiv);
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EXPORT_SYMBOL(__aeabi_idivmod);
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EXPORT_SYMBOL(__aeabi_lasr);
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EXPORT_SYMBOL(__aeabi_llsl);
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EXPORT_SYMBOL(__aeabi_llsr);
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EXPORT_SYMBOL(__aeabi_lmul);
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EXPORT_SYMBOL(__aeabi_uidiv);
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EXPORT_SYMBOL(__aeabi_uidivmod);
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EXPORT_SYMBOL(__aeabi_ulcmp);
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#endif
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/* bitops */
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EXPORT_SYMBOL(_set_bit_le);
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EXPORT_SYMBOL(_test_and_set_bit_le);
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EXPORT_SYMBOL(_clear_bit_le);
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EXPORT_SYMBOL(_test_and_clear_bit_le);
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EXPORT_SYMBOL(_change_bit_le);
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EXPORT_SYMBOL(_test_and_change_bit_le);
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EXPORT_SYMBOL(_find_first_zero_bit_le);
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EXPORT_SYMBOL(_find_next_zero_bit_le);
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EXPORT_SYMBOL(_find_first_bit_le);
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EXPORT_SYMBOL(_find_next_bit_le);
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#ifdef __ARMEB__
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EXPORT_SYMBOL(_set_bit_be);
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EXPORT_SYMBOL(_test_and_set_bit_be);
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EXPORT_SYMBOL(_clear_bit_be);
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EXPORT_SYMBOL(_test_and_clear_bit_be);
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EXPORT_SYMBOL(_change_bit_be);
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EXPORT_SYMBOL(_test_and_change_bit_be);
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EXPORT_SYMBOL(_find_first_zero_bit_be);
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EXPORT_SYMBOL(_find_next_zero_bit_be);
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EXPORT_SYMBOL(_find_first_bit_be);
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EXPORT_SYMBOL(_find_next_bit_be);
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#endif
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/* syscalls */
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EXPORT_SYMBOL(sys_write);
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EXPORT_SYMBOL(sys_lseek);
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EXPORT_SYMBOL(sys_exit);
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EXPORT_SYMBOL(sys_wait4);
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