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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [testsuite/] [gcc.target/] [i386/] [980709-1.c] - Blame information for rev 12

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Line No. Rev Author Line
1 12 jlechner
/* { dg-do compile { target i?86-*-* x86_64-*-* } } */
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/* { dg-options -O2 } */
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extern __inline__ int test_and_set_bit(int nr, volatile void * addr)
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{
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        int oldbit;
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        __asm__ __volatile__( ""
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                "btsl %2,%1\n\tsbbl %0,%0"
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                :"=r" (oldbit),"=m" (addr)
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                :"ir" (nr));
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        return oldbit;
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}
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struct buffer_head {
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        unsigned long b_state;
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};
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extern void lock_buffer(struct buffer_head * bh)
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{
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        while (test_and_set_bit(2 , &bh->b_state))
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                __wait_on_buffer(bh);
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}

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