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>
209 lines
5.0 KiB
C
209 lines
5.0 KiB
C
#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/smp.h>
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#include <linux/user.h>
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#include <linux/sched.h>
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#include <linux/in6.h>
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#include <linux/interrupt.h>
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#include <linux/smp_lock.h>
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#include <linux/pm.h>
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#include <linux/pci.h>
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#include <linux/apm_bios.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/syscalls.h>
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#include <linux/tty.h>
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#include <linux/ioctl32.h>
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#include <asm/semaphore.h>
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#include <asm/processor.h>
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#include <asm/i387.h>
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#include <asm/uaccess.h>
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#include <asm/checksum.h>
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#include <asm/io.h>
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#include <asm/delay.h>
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#include <asm/irq.h>
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#include <asm/mmx.h>
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#include <asm/desc.h>
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#include <asm/pgtable.h>
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#include <asm/pgalloc.h>
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#include <asm/nmi.h>
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#include <asm/kdebug.h>
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#include <asm/unistd.h>
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#include <asm/tlbflush.h>
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#include <asm/kdebug.h>
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extern spinlock_t rtc_lock;
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#ifdef CONFIG_SMP
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extern void __write_lock_failed(rwlock_t *rw);
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extern void __read_lock_failed(rwlock_t *rw);
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#endif
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#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_HD) || defined(CONFIG_BLK_DEV_IDE_MODULE) || defined(CONFIG_BLK_DEV_HD_MODULE)
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extern struct drive_info_struct drive_info;
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EXPORT_SYMBOL(drive_info);
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#endif
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extern unsigned long get_cmos_time(void);
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/* platform dependent support */
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EXPORT_SYMBOL(boot_cpu_data);
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//EXPORT_SYMBOL(dump_fpu);
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EXPORT_SYMBOL(__ioremap);
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EXPORT_SYMBOL(ioremap_nocache);
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EXPORT_SYMBOL(iounmap);
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EXPORT_SYMBOL(enable_irq);
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EXPORT_SYMBOL(disable_irq);
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EXPORT_SYMBOL(disable_irq_nosync);
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EXPORT_SYMBOL(probe_irq_mask);
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EXPORT_SYMBOL(kernel_thread);
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EXPORT_SYMBOL(pm_idle);
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EXPORT_SYMBOL(pm_power_off);
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EXPORT_SYMBOL(get_cmos_time);
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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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/* Networking helper routines. */
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EXPORT_SYMBOL(csum_partial_copy_nocheck);
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EXPORT_SYMBOL(ip_compute_csum);
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/* Delay loops */
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EXPORT_SYMBOL(__udelay);
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EXPORT_SYMBOL(__ndelay);
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EXPORT_SYMBOL(__delay);
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EXPORT_SYMBOL(__const_udelay);
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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(__get_user_8);
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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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EXPORT_SYMBOL(strpbrk);
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EXPORT_SYMBOL(strstr);
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EXPORT_SYMBOL(strncpy_from_user);
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EXPORT_SYMBOL(__strncpy_from_user);
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EXPORT_SYMBOL(clear_user);
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EXPORT_SYMBOL(__clear_user);
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EXPORT_SYMBOL(copy_user_generic);
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EXPORT_SYMBOL(copy_from_user);
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EXPORT_SYMBOL(copy_to_user);
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EXPORT_SYMBOL(copy_in_user);
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EXPORT_SYMBOL(strnlen_user);
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#ifdef CONFIG_PCI
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EXPORT_SYMBOL(pci_alloc_consistent);
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EXPORT_SYMBOL(pci_free_consistent);
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#endif
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#ifdef CONFIG_PCI
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EXPORT_SYMBOL(pci_mem_start);
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#endif
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EXPORT_SYMBOL(copy_page);
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EXPORT_SYMBOL(clear_page);
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EXPORT_SYMBOL(cpu_pda);
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#ifdef CONFIG_SMP
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EXPORT_SYMBOL(cpu_data);
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EXPORT_SYMBOL(cpu_online_map);
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EXPORT_SYMBOL(__write_lock_failed);
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EXPORT_SYMBOL(__read_lock_failed);
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EXPORT_SYMBOL(synchronize_irq);
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EXPORT_SYMBOL(smp_call_function);
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EXPORT_SYMBOL(cpu_callout_map);
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#endif
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#ifdef CONFIG_VT
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EXPORT_SYMBOL(screen_info);
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#endif
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EXPORT_SYMBOL(get_wchan);
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EXPORT_SYMBOL(rtc_lock);
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EXPORT_SYMBOL_GPL(set_nmi_callback);
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EXPORT_SYMBOL_GPL(unset_nmi_callback);
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/* Export string functions. We normally rely on gcc builtin for most of these,
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but gcc sometimes decides not to inline them. */
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#undef memcpy
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#undef memset
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#undef memmove
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#undef memchr
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#undef strlen
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#undef strncmp
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#undef strncpy
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#undef strchr
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extern void * memset(void *,int,__kernel_size_t);
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extern size_t strlen(const char *);
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extern void * memmove(void * dest,const void *src,size_t count);
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extern void *memchr(const void *s, int c, size_t n);
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extern void * memcpy(void *,const void *,__kernel_size_t);
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extern void * __memcpy(void *,const void *,__kernel_size_t);
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EXPORT_SYMBOL(memset);
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EXPORT_SYMBOL(strlen);
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EXPORT_SYMBOL(memmove);
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EXPORT_SYMBOL(strncmp);
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EXPORT_SYMBOL(strncpy);
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EXPORT_SYMBOL(strchr);
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EXPORT_SYMBOL(strncat);
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EXPORT_SYMBOL(memchr);
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EXPORT_SYMBOL(strrchr);
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EXPORT_SYMBOL(strnlen);
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EXPORT_SYMBOL(memscan);
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EXPORT_SYMBOL(memcpy);
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EXPORT_SYMBOL(__memcpy);
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#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
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/* prototypes are wrong, these are assembly with custom calling functions */
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extern void rwsem_down_read_failed_thunk(void);
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extern void rwsem_wake_thunk(void);
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extern void rwsem_downgrade_thunk(void);
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extern void rwsem_down_write_failed_thunk(void);
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EXPORT_SYMBOL(rwsem_down_read_failed_thunk);
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EXPORT_SYMBOL(rwsem_wake_thunk);
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EXPORT_SYMBOL(rwsem_downgrade_thunk);
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EXPORT_SYMBOL(rwsem_down_write_failed_thunk);
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#endif
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EXPORT_SYMBOL(empty_zero_page);
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#ifdef CONFIG_HAVE_DEC_LOCK
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EXPORT_SYMBOL(_atomic_dec_and_lock);
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#endif
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EXPORT_SYMBOL(die_chain);
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EXPORT_SYMBOL(register_die_notifier);
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#ifdef CONFIG_SMP
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EXPORT_SYMBOL(cpu_sibling_map);
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EXPORT_SYMBOL(smp_num_siblings);
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#endif
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extern void do_softirq_thunk(void);
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EXPORT_SYMBOL(do_softirq_thunk);
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void out_of_line_bug(void);
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EXPORT_SYMBOL(out_of_line_bug);
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EXPORT_SYMBOL(init_level4_pgt);
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extern unsigned long __supported_pte_mask;
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EXPORT_SYMBOL(__supported_pte_mask);
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#ifdef CONFIG_SMP
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EXPORT_SYMBOL(flush_tlb_page);
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#endif
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EXPORT_SYMBOL(cpu_khz);
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