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;
+   }
+
+}