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add InterlockedExchangeAdd for olds gcc version

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@898 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
tmator 2008-10-17 11:12:34 +00:00
parent 9c5438cb0b
commit 4477f77cf6
1 changed files with 6 additions and 2 deletions
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8
Source/Core/Common/Src/Thread.cpp
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@ -350,8 +350,12 @@ int InterlockedExchangeAdd(int *Addend, int Increment)
#if defined(__GNUC__) && defined (__GNUC_MINOR__) && ((4 < __GNUC__) || (4 == __GNUC__ && 1 <= __GNUC_MINOR__))
return __sync_add_and_fetch(Addend, Increment);
#else
#error Sorry - GCC versions that does not support __sync_add_and_fetch are not supported.
// TODO support old gcc
register int result;
__asm__ __volatile__("lock; xadd %0,%1"
: "=r" (result), "=m" (*Addend)
: "0" (Increment), "m" (*Addend)
: "memory");
return result + Increment;
#endif
}