3 files changed, 120 insertions, 0 deletions
diff --git a/botan/src/timer/cpu_counter/info.txt b/botan/src/timer/cpu_counter/info.txt
new file mode 100644
index 0000000..025663a
--- /dev/null
+++ b/botan/src/timer/cpu_counter/info.txt
@@ -0,0 +1,36 @@
+realname "Hardware Timer"
+
+define TIMER_HARDWARE
+
+load_on asm_ok
+
+<add>
+tm_hard.cpp
+tm_hard.h
+</add>
+
+<cc>
+gcc
+</cc>
+
+<arch>
+# RDTSC: Pentium and up
+i586
+i686
+athlon
+pentium4
+pentium-m
+amd64
+
+ppc     # PPC timebase register
+ppc64   # PPC timebase register
+alpha   # rpcc
+sparc64 # %tick register
+ia64    # ar.itc
+s390x
+hppa
+</arch>
+
+<requires>
+timer
+</requires>
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;
+   }
+
+}
diff --git a/botan/src/timer/cpu_counter/tm_hard.h b/botan/src/timer/cpu_counter/tm_hard.h
new file mode 100644
index 0000000..2e338ec
--- /dev/null
+++ b/botan/src/timer/cpu_counter/tm_hard.h
@@ -0,0 +1,33 @@
+/*
+* Hardware Timer
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_TIMER_HARDWARE_H__
+#define BOTAN_TIMER_HARDWARE_H__
+
+#include <botan/timer.h>
+
+namespace Botan {
+
+/*
+* Hardware Timer
+*/
+class BOTAN_DLL Hardware_Timer : public Timer
+   {
+   public:
+      /*
+      @todo: Add sync(Timer& wall_clock, bool milliseconds) which busy
+      loops using wall_clock and tries to guess the tick rate of the
+      hardware counter, allowing it to be used for benchmarks, etc
+      */
+
+      std::string name() const { return "Hardware Timer"; }
+      u64bit clock() const;
+   };
+
+}
+
+#endif