diff options
author | Keith Isdale <keith.isdale@nokia.com> | 2010-07-26 14:56:53 +1000 |
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committer | Keith Isdale <keith.isdale@nokia.com> | 2010-07-26 14:56:53 +1000 |
commit | 9f034793bcfc51c2b7c1dd14db806f7258f9a9eb (patch) | |
tree | 63bd0f50ce5b77828ad8205eafd7b9412810499e /botan/src/timer/cpu_counter/tm_hard.cpp | |
parent | 619d92cfef29e653bfdf852e83888e50cfc4348f (diff) | |
parent | 65271649dbc90f3af1184ad1b23bdb64c0c07d07 (diff) |
Merge branch 'master' of git://git-nokia.trolltech.com.au/qtsoftware/research/qtuitest
Diffstat (limited to 'botan/src/timer/cpu_counter/tm_hard.cpp')
-rw-r--r-- | botan/src/timer/cpu_counter/tm_hard.cpp | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/botan/src/timer/cpu_counter/tm_hard.cpp b/botan/src/timer/cpu_counter/tm_hard.cpp new file mode 100644 index 0000000..9e31aee --- /dev/null +++ b/botan/src/timer/cpu_counter/tm_hard.cpp @@ -0,0 +1,51 @@ +/* +* Hardware Timer +* (C) 1999-2007 Jack Lloyd +* +* Distributed under the terms of the Botan license +*/ + +#include <botan/tm_hard.h> + +namespace Botan { + +/* +* Get the timestamp +*/ +u64bit Hardware_Timer::clock() const + { + u64bit rtc = 0; + +#if defined(BOTAN_TARGET_ARCH_IS_IA32) || defined(BOTAN_TARGET_ARCH_IS_AMD64) + u32bit rtc_low = 0, rtc_high = 0; + asm volatile("rdtsc" : "=d" (rtc_high), "=a" (rtc_low)); + rtc = (static_cast<u64bit>(rtc_high) << 32) | rtc_low; + +#elif defined(BOTAN_TARGET_ARCH_IS_PPC) || defined(BOTAN_TARGET_ARCH_IS_PPC64) + u32bit rtc_low = 0, rtc_high = 0; + asm volatile("mftbu %0; mftb %1" : "=r" (rtc_high), "=r" (rtc_low)); + rtc = (static_cast<u64bit>(rtc_high) << 32) | rtc_low; + +#elif defined(BOTAN_TARGET_ARCH_IS_ALPHA) + asm volatile("rpcc %0" : "=r" (rtc)); + +#elif defined(BOTAN_TARGET_ARCH_IS_SPARC64) + asm volatile("rd %%tick, %0" : "=r" (rtc)); + +#elif defined(BOTAN_TARGET_ARCH_IS_IA64) + asm volatile("mov %0=ar.itc" : "=r" (rtc)); + +#elif defined(BOTAN_TARGET_ARCH_IS_S390X) + asm volatile("stck 0(%0)" : : "a" (&rtc) : "memory", "cc"); + +#elif defined(BOTAN_TARGET_ARCH_IS_HPPA) + asm volatile("mfctl 16,%0" : "=r" (rtc)); // 64-bit only? + +#else + #error "Unsure how to access hardware timer on this system" +#endif + + return rtc; + } + +} |