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Fix FreeBSD/PowerPC* issues #2147

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kgotlinux wants to merge 2 commits into from
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Fix FreeBSD/PowerPC* issues #2147

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802fc11
Fix saved-LR slot for 32-bit ELF PowerPC in the stacktrace unwinder
kgotlinux Aug 30, 2026
8f44311
Fix UnscaledCycleClock::Frequency() on FreeBSD/PowerPC
kgotlinux Aug 30, 2026
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9 changes: 6 additions & 3 deletions absl/base/internal/unscaledcycleclock.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -99,9 +99,12 @@ double UnscaledCycleClock::Frequency() {
static once_flag init_timebase_frequency_once;
static double timebase_frequency = 0.0;
base_internal::LowLevelCallOnce(&init_timebase_frequency_once, [&]() {
size_t length = sizeof(timebase_frequency);
sysctlbyname("kern.timecounter.tc.timebase.frequency", &timebase_frequency,
&length, nullptr, 0);
uint64_t freq = 0;
size_t length = sizeof(freq);
if (sysctlbyname("kern.timecounter.tc.timebase.frequency", &freq, &length,
nullptr, 0) == 0) {
timebase_frequency = static_cast<double>(freq);
}
});
return timebase_frequency;
#else
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5 changes: 2 additions & 3 deletions absl/debugging/internal/stacktrace_powerpc-inl.inc
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Expand Up @@ -51,11 +51,10 @@ static inline void **StacktracePowerPCGetLRPtr(void **sp) {
return (sp + 2);
#elif defined(_CALL_SYSV)
return (sp + 1);
#elif defined(__APPLE__) || defined(__FreeBSD__) || \
(defined(__linux__) && defined(__PPC64__))
#elif defined(__APPLE__) || defined(__PPC64__)
// This check is in case the compiler doesn't define _CALL_AIX/etc.
return (sp + 2);
#elif defined(__linux)
#elif defined(__linux) || defined(__FreeBSD__)
// This check is in case the compiler doesn't define _CALL_SYSV.
return (sp + 1);
#else
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