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--- absl/base/internal/unscaledcycleclock.cc.orig 2019-07-24 12:47:23 UTC |
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+++ absl/base/internal/unscaledcycleclock.cc |
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@@ -20,10 +20,15 @@ |
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#include <intrin.h> |
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#endif |
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|
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-#if defined(__powerpc__) || defined(__ppc__) |
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+#if (defined(__powerpc__) || defined(__ppc__)) && !defined(__FreeBSD__) |
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#include <sys/platform/ppc.h> |
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#endif |
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|
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+#ifdef __FreeBSD__ |
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+#include <sys/types.h> |
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+#include <sys/sysctl.h> |
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+#endif |
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+ |
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#include "absl/base/internal/sysinfo.h" |
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|
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namespace absl { |
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@@ -56,11 +61,34 @@ double UnscaledCycleClock::Frequency() { |
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#elif defined(__powerpc__) || defined(__ppc__) |
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|
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int64_t UnscaledCycleClock::Now() { |
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+#ifndef __FreeBSD__ |
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return __ppc_get_timebase(); |
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+#else |
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+ union { long long complete; unsigned int part[2]; } ticks; |
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+ unsigned int tmp; |
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+ asm volatile( |
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+ "0:\n" |
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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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+ ); |
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+ return ticks.complete; |
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+#endif |
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} |
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|
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double UnscaledCycleClock::Frequency() { |
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+#ifndef __FreeBSD__ |
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return __ppc_get_timebase_freq(); |
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+#else |
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+ long timebaseFrequency = 0; |
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+ size_t length = sizeof(timebaseFrequency); |
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+ sysctlbyname("kern.timecounter.tc.timebase.frequency", &timebaseFrequency, &length, NULL, 0); |
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+ return timebaseFrequency; |
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+#endif |
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} |
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|
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#elif defined(__aarch64__) |