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0c28130b5c
In include/asm-x86_64/string.h there are such comments: /* Use C out of line version for memcmp */ #define memcmp __builtin_memcmp int memcmp(const void * cs,const void * ct,size_t count); This would mean that if the compiler does not decide to use __builtin_memcmp, it emits a call to memcmp to be satisfied by the C out-of-line version in lib/string.c. What happens is that after preprocessing, in lib/string.i you may find the definition of "__builtin_strcmp". Actually, by accident, in the object you will find the definition of strcmp and such (maybe a trick intended to redirect calls to __builtin_memcmp to the default memcmp when the definition is not expanded); however, this particular case is not a documented feature as far as I can see. Also, the EXPORT_SYMBOL does not work, so it's duplicated in the arch. I simply added some #undef to lib/string.c and removed the (now duplicated) exports in x86-64 and UML/x86_64 subarchs (the second ones are introduced by another patch I just posted for -mm). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> CC: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
21 lines
548 B
C
21 lines
548 B
C
#include "linux/module.h"
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#include "linux/in6.h"
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#include "linux/rwsem.h"
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#include "asm/byteorder.h"
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#include "asm/semaphore.h"
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#include "asm/uaccess.h"
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#include "asm/checksum.h"
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#include "asm/errno.h"
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EXPORT_SYMBOL(__down_failed);
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EXPORT_SYMBOL(__down_failed_interruptible);
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EXPORT_SYMBOL(__down_failed_trylock);
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EXPORT_SYMBOL(__up_wakeup);
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/*XXX: we need them because they would be exported by x86_64 */
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EXPORT_SYMBOL(__memcpy);
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/* Networking helper routines. */
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/*EXPORT_SYMBOL(csum_partial_copy_from);
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EXPORT_SYMBOL(csum_partial_copy_to);*/
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