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26 lines
716 B
C
26 lines
716 B
C
--- readTSC.C.orig 2019-02-27 09:30:27 UTC
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+++ readTSC.C
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@@ -19,10 +19,22 @@
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long long readTSC(void)
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{
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union { long long complete; unsigned int part[2]; } ticks;
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+#ifdef __amd64__
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__asm__ ("rdtsc; mov %%eax,%0;mov %%edx,%1"
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: "=mr" (ticks.part[0]),
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"=mr" (ticks.part[1])
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: /* no inputs */
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: "eax", "edx");
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+#elif __powerpc__
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+ unsigned int tmp;
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+ __asm__ ("0:"
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+ "mftbu %[hi32]\n"
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+ "mftb %[lo32]\n"
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+ "mftbu %[tmp]\n"
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+ "cmpw %[tmp],%[hi32]\n"
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+ "bne 0b\n"
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+ : [hi32] "=r"(ticks.part[0]), [lo32] "=r"(ticks.part[1]),
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+ [tmp] "=r"(tmp));
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+#endif
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return ticks.complete;
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}
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