LXR linux/arch/xtensa/kernel/xtensa

   1/*
   2 * arch/xtensa/kernel/xtensa_ksyms.c
   3 *
   4 * Export Xtensa-specific functions for loadable modules.
   5 *
   6 * This file is subject to the terms and conditions of the GNU General Public
   7 * License.  See the file "COPYING" in the main directory of this archive
   8 * for more details.
   9 *
  10 * Copyright (C) 2001 - 2005  Tensilica Inc.
  11 *
  12 * Joe Taylor <joe@tensilica.com>
  13 */
  14
  15#include <linux/module.h>
  16#include <linux/string.h>
  17#include <linux/mm.h>
  18#include <linux/interrupt.h>
  19#include <asm/irq.h>
  20#include <linux/in6.h>
  21
  22#include <linux/uaccess.h>
  23#include <asm/cacheflush.h>
  24#include <asm/checksum.h>
  25#include <asm/dma.h>
  26#include <asm/io.h>
  27#include <asm/page.h>
  28#include <asm/ftrace.h>
  29#ifdef CONFIG_BLK_DEV_FD
  30#include <asm/floppy.h>
  31#endif
  32#ifdef CONFIG_NET
  33#include <net/checksum.h>
  34#endif /* CONFIG_NET */
  35
  36
  37/*
  38 * String functions
  39 */
  40EXPORT_SYMBOL(memset);
  41EXPORT_SYMBOL(memcpy);
  42EXPORT_SYMBOL(memmove);
  43EXPORT_SYMBOL(__memset);
  44EXPORT_SYMBOL(__memcpy);
  45EXPORT_SYMBOL(__memmove);
  46#ifdef CONFIG_ARCH_HAS_STRNCPY_FROM_USER
  47EXPORT_SYMBOL(__strncpy_user);
  48#endif
  49EXPORT_SYMBOL(clear_page);
  50EXPORT_SYMBOL(copy_page);
  51
  52EXPORT_SYMBOL(empty_zero_page);
  53
  54/*
  55 * gcc internal math functions
  56 */
  57extern long long __ashrdi3(long long, int);
  58extern long long __ashldi3(long long, int);
  59extern long long __lshrdi3(long long, int);
  60extern int __divsi3(int, int);
  61extern int __modsi3(int, int);
  62extern long long __muldi3(long long, long long);
  63extern int __mulsi3(int, int);
  64extern unsigned int __udivsi3(unsigned int, unsigned int);
  65extern unsigned int __umodsi3(unsigned int, unsigned int);
  66extern unsigned long long __umoddi3(unsigned long long, unsigned long long);
  67extern unsigned long long __udivdi3(unsigned long long, unsigned long long);
  68extern int __ucmpdi2(int, int);
  69
  70EXPORT_SYMBOL(__ashldi3);
  71EXPORT_SYMBOL(__ashrdi3);
  72EXPORT_SYMBOL(__lshrdi3);
  73EXPORT_SYMBOL(__divsi3);
  74EXPORT_SYMBOL(__modsi3);
  75EXPORT_SYMBOL(__muldi3);
  76EXPORT_SYMBOL(__mulsi3);
  77EXPORT_SYMBOL(__udivsi3);
  78EXPORT_SYMBOL(__umodsi3);
  79EXPORT_SYMBOL(__udivdi3);
  80EXPORT_SYMBOL(__umoddi3);
  81EXPORT_SYMBOL(__ucmpdi2);
  82
  83void __xtensa_libgcc_window_spill(void)
  84{
  85        BUG();
  86}
  87EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
  88
  89unsigned int __sync_fetch_and_and_4(volatile void *p, unsigned int v)
  90{
  91        BUG();
  92}
  93EXPORT_SYMBOL(__sync_fetch_and_and_4);
  94
  95unsigned int __sync_fetch_and_or_4(volatile void *p, unsigned int v)
  96{
  97        BUG();
  98}
  99EXPORT_SYMBOL(__sync_fetch_and_or_4);
 100
 101/*
 102 * Networking support
 103 */
 104EXPORT_SYMBOL(csum_partial);
 105EXPORT_SYMBOL(csum_partial_copy_generic);
 106
 107/*
 108 * Architecture-specific symbols
 109 */
 110EXPORT_SYMBOL(__xtensa_copy_user);
 111EXPORT_SYMBOL(__invalidate_icache_range);
 112
 113/*
 114 * Kernel hacking ...
 115 */
 116
 117#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
 118// FIXME EXPORT_SYMBOL(screen_info);
 119#endif
 120
 121extern long common_exception_return;
 122EXPORT_SYMBOL(common_exception_return);
 123
 124#ifdef CONFIG_FUNCTION_TRACER
 125EXPORT_SYMBOL(_mcount);
 126#endif
 127
 128EXPORT_SYMBOL(__invalidate_dcache_range);
 129#if XCHAL_DCACHE_IS_WRITEBACK
 130EXPORT_SYMBOL(__flush_dcache_range);
 131#endif
 132