On 11/23/2011 04:00 PM, Joseph S. Myers wrote:
> On Wed, 23 Nov 2011, Richard Henderson wrote:
>
>> + __asm volatile ("swi %1"
>> + : "+r"(sc_0)
>> + : "i"(SYS_futex), "r"(sc_1), "r"(sc_2), "r"(sc_3)
>> + : "memory");
>
> That looks wrong. Passing the syscall number to swi is the old-ABI
> approach; the EABI uses syscall number in r7.
Interesting to know.
I took as examples both glibc ports sysdeps.h and CLEAR_INSN_CACHE from
linux-gas.h. Which... I see is out of date wrt libgcc lib1funcs.S clear_cache.
Perhaps I'm better off with the syscall function as libgomp uses?
r~
