diff options
Diffstat (limited to 'src/lib/utils/os_utils.cpp')
| -rw-r--r-- | src/lib/utils/os_utils.cpp | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/lib/utils/os_utils.cpp b/src/lib/utils/os_utils.cpp index 7bd9b842d..e887d6e76 100644 --- a/src/lib/utils/os_utils.cpp +++ b/src/lib/utils/os_utils.cpp @@ -51,12 +51,13 @@ uint64_t OS::get_processor_timestamp() #elif defined(BOTAN_USE_GCC_INLINE_ASM) #if defined(BOTAN_TARGET_CPU_IS_X86_FAMILY) - if(CPUID::has_rdtsc()) // not available on all x86 CPUs - { - uint32_t rtc_low = 0, rtc_high = 0; - asm volatile("rdtsc" : "=d" (rtc_high), "=a" (rtc_low)); - return (static_cast<uint64_t>(rtc_high) << 32) | rtc_low; - } + + if(CPUID::has_rdtsc() == false) + return 0; + + uint32_t rtc_low = 0, rtc_high = 0; + asm volatile("rdtsc" : "=d" (rtc_high), "=a" (rtc_low)); + return (static_cast<uint64_t>(rtc_high) << 32) | rtc_low; #elif defined(BOTAN_TARGET_ARCH_IS_PPC64) uint32_t rtc_low = 0, rtc_high = 0; @@ -99,11 +100,12 @@ uint64_t OS::get_processor_timestamp() #else //#warning "OS::get_processor_timestamp not implemented" + return 0; #endif -#endif - +#else return 0; +#endif } uint64_t OS::get_high_resolution_clock() |