Revision 4a9590f3

b/qemu-timer.h
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#else
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    /* http://ozlabs.org/pipermail/linuxppc-dev/1999-October/003889.html */
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    unsigned long junk;
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    __asm__ __volatile__ ("mftbu   %1\n\t"
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                          "mftb    %L0\n\t"
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                          "mftbu   %0\n\t"
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    __asm__ __volatile__ ("mfspr   %1,269\n\t"  /* mftbu */
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                          "mfspr   %L0,268\n\t" /* mftb */
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                          "mfspr   %0,269\n\t"  /* mftbu */
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                          "cmpw    %0,%1\n\t"
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                          "bne     $-16"
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                          : "=r" (retval), "=r" (junk));

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