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Rev 2927 Rev 3107
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        "   addiu %0, %0, %3\n" /* same as addi, but never traps on overflow */
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        "   addiu %0, %0, %3\n" /* same as addi, but never traps on overflow */
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        "       move %2, %0\n"
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        "       move %2, %0\n"
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        "   sc %0, %1\n"
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        "   sc %0, %1\n"
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        "   beq %0, %4, 1b\n"   /* if the atomic operation failed, try again */
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        "   beq %0, %4, 1b\n"   /* if the atomic operation failed, try again */
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        "   nop\n"
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        "   nop\n"
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        : "=r" (tmp), "=m" (val->count), "=r" (v)
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        : "=&r" (tmp), "=m" (val->count), "=&r" (v)
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        : "i" (i), "i" (0)
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        : "i" (i), "i" (0)
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        );
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        );
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    return v;
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    return v;
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}
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}