Hi,
anyone used any mutex by some special AVR32 instructions? like memc, mems and xchg.
Cheng
darthvader 
mutex by AVR32 instruction set
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darthvader hce
Yes, for example the Linux kernel has mutexes and semaphores implemented.
The toolchain has also loads of synchronized builtins enabled, see the __builtin_sync stuff.
Do you have any problems? I saw no question in your post.
darthvader where is this __builtin_sync???
hce
Hmm, I was a bit fast typing the GCC intrinsic function name, it is all documented in the GCC manual:
darthvader I tried __sync_bool_compare_and_swap and __sync_lock_test_and_set in my AVR32 code, but the compiler can't compile them.
Severity and Description Path Resource Location Creation Time Id undefined reference to `__sync_bool_compare_and_swap_1' Framework/1.2.0ES-AT32UC3B/COMPONENTS/RF/CC2420 cc2420_pt.c line 236 1208180677671 67545
hce
You will need a fairly new toolchain for them to work, I guess they were added in the GCC 4.2.2 release of GCC for AVR32.
Could you do a avr32-gcc --version?
darthvader avr32-gcc (GCC) 4.2.2-atmel.1.0.8 (mingw32 special)
This is mine.
hce
Could you paste your code where you use the __sync_bool_compare_and_swap and __sync_lock_test_and_set? Just to sort out any syntax errors :)
darthvader ok:
U8 i = 0;
int main(void)
{
...
__sync_bool_compare_and_swap(&i, 0, 1);
...
}