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# include <linux/module.h>
# include <linux/linkage.h>
# include <linux/sched.h>
# include <linux/string.h>
# include <linux/mm.h>
# include <linux/user.h>
# include <linux/elfcore.h>
# include <linux/in6.h>
# include <linux/interrupt.h>
# include <asm/setup.h>
# include <asm/pgalloc.h>
# include <asm/irq.h>
# include <asm/io.h>
# include <asm/checksum.h>
# include <asm/hardirq.h>
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# include <asm/cacheflush.h>
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extern long __memcpy_user ( void * dst , const void * src , size_t count ) ;
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extern long __memset_user ( void * dst , const void * src , size_t count ) ;
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/* platform dependent support */
EXPORT_SYMBOL ( __ioremap ) ;
EXPORT_SYMBOL ( iounmap ) ;
EXPORT_SYMBOL ( ip_fast_csum ) ;
#if 0
EXPORT_SYMBOL ( local_irq_count ) ;
EXPORT_SYMBOL ( local_bh_count ) ;
# endif
EXPORT_SYMBOL ( kernel_thread ) ;
EXPORT_SYMBOL ( __res_bus_clock_speed_HZ ) ;
EXPORT_SYMBOL ( __page_offset ) ;
EXPORT_SYMBOL ( __memcpy_user ) ;
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EXPORT_SYMBOL ( __memset_user ) ;
EXPORT_SYMBOL ( frv_dcache_writeback ) ;
EXPORT_SYMBOL ( frv_cache_invalidate ) ;
EXPORT_SYMBOL ( frv_icache_invalidate ) ;
EXPORT_SYMBOL ( frv_cache_wback_inv ) ;
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# ifndef CONFIG_MMU
EXPORT_SYMBOL ( memory_start ) ;
EXPORT_SYMBOL ( memory_end ) ;
# endif
EXPORT_SYMBOL ( __debug_bug_trap ) ;
/* The following are special because they're not called
explicitly ( the C compiler generates them ) . Fortunately ,
their interface isn ' t gonna change any time soon now , so
it ' s OK to leave it out of version control . */
EXPORT_SYMBOL ( memcpy ) ;
EXPORT_SYMBOL ( memset ) ;
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EXPORT_SYMBOL ( __outsl_ns ) ;
EXPORT_SYMBOL ( __insl_ns ) ;
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# ifdef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS
EXPORT_SYMBOL ( atomic_test_and_ANDNOT_mask ) ;
EXPORT_SYMBOL ( atomic_test_and_OR_mask ) ;
EXPORT_SYMBOL ( atomic_test_and_XOR_mask ) ;
EXPORT_SYMBOL ( atomic_add_return ) ;
EXPORT_SYMBOL ( atomic_sub_return ) ;
EXPORT_SYMBOL ( __xchg_32 ) ;
EXPORT_SYMBOL ( __cmpxchg_32 ) ;
# endif
FRV: Implement atomic64_t
Implement atomic64_t and its ops for FRV. Tested with the following patch:
diff --git a/arch/frv/kernel/setup.c b/arch/frv/kernel/setup.c
index 55e4fab..086d50d 100644
--- a/arch/frv/kernel/setup.c
+++ b/arch/frv/kernel/setup.c
@@ -746,6 +746,52 @@ static void __init parse_cmdline_early(char *cmdline)
} /* end parse_cmdline_early() */
+static atomic64_t xxx;
+
+static void test_atomic64(void)
+{
+ atomic64_set(&xxx, 0x12300000023LL);
+
+ mb();
+ BUG_ON(atomic64_read(&xxx) != 0x12300000023LL);
+ mb();
+ if (atomic64_inc_return(&xxx) != 0x12300000024LL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != 0x12300000024LL);
+ mb();
+ if (atomic64_sub_return(0x36900000050LL, &xxx) != -0x2460000002cLL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != -0x2460000002cLL);
+ mb();
+ if (atomic64_dec_return(&xxx) != -0x2460000002dLL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != -0x2460000002dLL);
+ mb();
+ if (atomic64_add_return(0x36800000001LL, &xxx) != 0x121ffffffd4LL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != 0x121ffffffd4LL);
+ mb();
+ if (atomic64_cmpxchg(&xxx, 0x123456789abcdefLL, 0x121ffffffd4LL) != 0x121ffffffd4LL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != 0x121ffffffd4LL);
+ mb();
+ if (atomic64_cmpxchg(&xxx, 0x121ffffffd4LL, 0x123456789abcdefLL) != 0x121ffffffd4LL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != 0x123456789abcdefLL);
+ mb();
+ if (atomic64_xchg(&xxx, 0xabcdef123456789LL) != 0x123456789abcdefLL)
+ BUG();
+ mb();
+ BUG_ON(atomic64_read(&xxx) != 0xabcdef123456789LL);
+ mb();
+}
+
/*****************************************************************************/
/*
*
@@ -845,6 +891,8 @@ void __init setup_arch(char **cmdline_p)
// asm volatile("movgs %0,timerd" :: "r"(10000000));
// __set_HSR(0, __get_HSR(0) | HSR0_ETMD);
+ test_atomic64();
+
} /* end setup_arch() */
#if 0
Note that this doesn't cover all the trivial wrappers, but does cover all the
substantial implementations.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-02 00:46:16 +01:00
EXPORT_SYMBOL ( atomic64_add_return ) ;
EXPORT_SYMBOL ( atomic64_sub_return ) ;
EXPORT_SYMBOL ( __xchg_64 ) ;
EXPORT_SYMBOL ( __cmpxchg_64 ) ;
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EXPORT_SYMBOL ( __debug_bug_printk ) ;
EXPORT_SYMBOL ( __delay_loops_MHz ) ;
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/*
* libgcc functions - functions that are used internally by the
* compiler . . . ( prototypes are not correct though , but that
* doesn ' t really matter since they ' re not versioned ) .
*/
extern void __gcc_bcmp ( void ) ;
extern void __ashldi3 ( void ) ;
extern void __ashrdi3 ( void ) ;
extern void __cmpdi2 ( void ) ;
extern void __divdi3 ( void ) ;
extern void __lshrdi3 ( void ) ;
extern void __moddi3 ( void ) ;
extern void __muldi3 ( void ) ;
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extern void __mulll ( void ) ;
extern void __umulll ( void ) ;
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extern void __negdi2 ( void ) ;
extern void __ucmpdi2 ( void ) ;
extern void __udivdi3 ( void ) ;
extern void __udivmoddi4 ( void ) ;
extern void __umoddi3 ( void ) ;
/* gcc lib functions */
//EXPORT_SYMBOL(__gcc_bcmp);
EXPORT_SYMBOL ( __ashldi3 ) ;
EXPORT_SYMBOL ( __ashrdi3 ) ;
//EXPORT_SYMBOL(__cmpdi2);
//EXPORT_SYMBOL(__divdi3);
EXPORT_SYMBOL ( __lshrdi3 ) ;
//EXPORT_SYMBOL(__moddi3);
EXPORT_SYMBOL ( __muldi3 ) ;
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EXPORT_SYMBOL ( __mulll ) ;
EXPORT_SYMBOL ( __umulll ) ;
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EXPORT_SYMBOL ( __negdi2 ) ;
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EXPORT_SYMBOL ( __ucmpdi2 ) ;
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//EXPORT_SYMBOL(__udivdi3);
//EXPORT_SYMBOL(__udivmoddi4);
//EXPORT_SYMBOL(__umoddi3);