1 files changed, 25 insertions, 0 deletions
diff --git a/science/qbox/files/patch-readTSC.cpp b/science/qbox/files/patch-readTSC.cpp
new file mode 100644
index 000000000000..b10b8ac4e62e
--- /dev/null
+++ b/science/qbox/files/patch-readTSC.cpp
@@ -0,0 +1,25 @@
+--- readTSC.cpp.orig	2019-02-27 09:30:27 UTC
++++ readTSC.cpp
+@@ -19,10 +19,22 @@
+ long long readTSC(void)
+ {
+   union { long long complete; unsigned int part[2]; } ticks;
++#ifdef __amd64__
+   __asm__ ("rdtsc; mov %%eax,%0;mov %%edx,%1"
+             : "=mr" (ticks.part[0]),
+               "=mr" (ticks.part[1])
+             : /* no inputs */
+             : "eax", "edx");
++#elif __powerpc__
++  unsigned int tmp;
++  __asm__ ("0:"
++            "mftbu %[hi32]\n"
++            "mftb %[lo32]\n"
++            "mftbu %[tmp]\n"
++            "cmpw %[tmp],%[hi32]\n"
++            "bne 0b\n"
++            : [hi32] "=r"(ticks.part[0]), [lo32] "=r"(ticks.part[1]),
++            [tmp] "=r"(tmp));
++#endif
+   return ticks.complete;
+ }