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xtensa: provide dummy gcc intrinsics

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__xtensa_libgcc_window_spill is needed for __builtin_return_address(1),
but its libgcc implementation cannot be used as it makes a syscall.

Atomic intrinsics are used by single staging driver.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
This commit is contained in:
Max Filippov 2012-09-17 05:44:57 +04:00 committed by Chris Zankel
parent d3738f407c
commit 6907b4564b
1 changed files with 17 additions and 0 deletions
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17
arch/xtensa/kernel/xtensa_ksyms.c
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@ -74,8 +74,25 @@ EXPORT_SYMBOL(__umodsi3);
EXPORT_SYMBOL(__udivdi3);
EXPORT_SYMBOL(__umoddi3);
EXPORT_SYMBOL(__ucmpdi2);
void __xtensa_libgcc_window_spill(void)
{
BUG();
}
EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
unsigned long __sync_fetch_and_and_4(unsigned long *p, unsigned long v)
{
BUG();
}
EXPORT_SYMBOL(__sync_fetch_and_and_4);
unsigned long __sync_fetch_and_or_4(unsigned long *p, unsigned long v)
{
BUG();
}
EXPORT_SYMBOL(__sync_fetch_and_or_4);
#ifdef CONFIG_NET
/*
* Networking support