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Most architectures do not need a custom implementation, and in most
cases the generic implementation is preferred, so change the polariy
on these Kconfig symbols to require architectures to select them when
they provide their own version.
The new name is CONFIG_ARCH_HAS_{STRNCPY_FROM,STRNLEN}_USER.
The remaining architectures at the moment are: ia64, mips, parisc,
um and xtensa. We should probably convert these as well, but
I was not sure how far to take this series. Thomas Bogendoerfer
had some concerns about converting mips but may still do some
more detailed measurements to see which version is better.
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: linux-ia64@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linux-um@lists.infradead.org
Cc: linux-xtensa@linux-xtensa.org
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Helge Deller <deller@gmx.de> # parisc
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/*
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* arch/xtensa/kernel/xtensa_ksyms.c
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*
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* Export Xtensa-specific functions for loadable modules.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2001 - 2005 Tensilica Inc.
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*
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* Joe Taylor <joe@tensilica.com>
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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/mm.h>
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#include <linux/interrupt.h>
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#include <asm/irq.h>
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#include <linux/in6.h>
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#include <linux/uaccess.h>
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#include <asm/cacheflush.h>
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#include <asm/checksum.h>
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#include <asm/dma.h>
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#include <asm/io.h>
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#include <asm/page.h>
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#include <asm/ftrace.h>
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#ifdef CONFIG_BLK_DEV_FD
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#include <asm/floppy.h>
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#endif
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#ifdef CONFIG_NET
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#include <net/checksum.h>
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#endif /* CONFIG_NET */
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/*
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* String functions
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*/
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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(__memset);
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EXPORT_SYMBOL(__memcpy);
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EXPORT_SYMBOL(__memmove);
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#ifdef CONFIG_ARCH_HAS_STRNCPY_FROM_USER
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EXPORT_SYMBOL(__strncpy_user);
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#endif
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EXPORT_SYMBOL(clear_page);
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EXPORT_SYMBOL(copy_page);
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EXPORT_SYMBOL(empty_zero_page);
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/*
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* gcc internal math functions
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*/
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extern long long __ashrdi3(long long, int);
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extern long long __ashldi3(long long, int);
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extern long long __lshrdi3(long long, int);
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extern int __divsi3(int, int);
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extern int __modsi3(int, int);
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extern long long __muldi3(long long, long long);
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extern int __mulsi3(int, int);
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extern unsigned int __udivsi3(unsigned int, unsigned int);
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extern unsigned int __umodsi3(unsigned int, unsigned int);
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extern unsigned long long __umoddi3(unsigned long long, unsigned long long);
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extern unsigned long long __udivdi3(unsigned long long, unsigned long long);
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extern int __ucmpdi2(int, int);
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EXPORT_SYMBOL(__ashldi3);
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EXPORT_SYMBOL(__ashrdi3);
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EXPORT_SYMBOL(__lshrdi3);
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EXPORT_SYMBOL(__divsi3);
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EXPORT_SYMBOL(__modsi3);
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EXPORT_SYMBOL(__muldi3);
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EXPORT_SYMBOL(__mulsi3);
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EXPORT_SYMBOL(__udivsi3);
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EXPORT_SYMBOL(__umodsi3);
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EXPORT_SYMBOL(__udivdi3);
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EXPORT_SYMBOL(__umoddi3);
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EXPORT_SYMBOL(__ucmpdi2);
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void __xtensa_libgcc_window_spill(void)
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{
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BUG();
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}
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EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
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unsigned int __sync_fetch_and_and_4(volatile void *p, unsigned int v)
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{
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BUG();
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}
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EXPORT_SYMBOL(__sync_fetch_and_and_4);
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unsigned int __sync_fetch_and_or_4(volatile void *p, unsigned int v)
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{
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BUG();
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}
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EXPORT_SYMBOL(__sync_fetch_and_or_4);
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/*
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* Networking support
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*/
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EXPORT_SYMBOL(csum_partial);
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EXPORT_SYMBOL(csum_partial_copy_generic);
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/*
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* Architecture-specific symbols
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*/
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EXPORT_SYMBOL(__xtensa_copy_user);
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EXPORT_SYMBOL(__invalidate_icache_range);
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/*
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* Kernel hacking ...
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*/
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#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
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// FIXME EXPORT_SYMBOL(screen_info);
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#endif
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extern long common_exception_return;
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EXPORT_SYMBOL(common_exception_return);
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#ifdef CONFIG_FUNCTION_TRACER
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EXPORT_SYMBOL(_mcount);
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#endif
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EXPORT_SYMBOL(__invalidate_dcache_range);
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#if XCHAL_DCACHE_IS_WRITEBACK
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EXPORT_SYMBOL(__flush_dcache_range);
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#endif
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