From 1872bfbc1f4a5b3c4980fae889787ab15ddcc83b Mon Sep 17 00:00:00 2001
From: Andrea Bastoni <bastoni@cs.unc.edu>
Date: Thu, 17 Dec 2009 16:06:15 -0500
Subject: Porting on x86_64

---
 Makefile         |  6 +++++-
 SConstruct       |  7 ++++++-
 include/cycles.h | 43 +++++++++++++++++++++++++++++++++++--------
 3 files changed, 46 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index 409067e..bb8fffa 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,14 @@
-.PHONY: all-32 all-64 clean purge
+.PHONY: all-32 all-64 all-sparc clean purge
 
 all-32:
 	echo "Legacy warning: Building is done with scons."
 	ARCH=x86 scons
 all-64:
 	ARCH=x86_64 scons
+
+all-sparc:
+	ARCH=sparc64 scons
+
 clean:
 	echo "Legacy warning: Building is now done with scons."
 	scons -c
diff --git a/SConstruct b/SConstruct
index 8e6981a..1f2a35b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -58,7 +58,12 @@ else:
     arch_flags = Split(SUPPORTED_ARCHS[arch])
 
 # add architecture dependent include search path
-KERNEL_ARCH_INCLUDE = '%s/arch/%s/include' % (LITMUS_KERNEL, arch)
+if arch in ['x86','x86_64']:
+    include_arch = 'x86'
+else:
+    include_arch = 'sparc'
+
+KERNEL_ARCH_INCLUDE = '%s/arch/%s/include' % (LITMUS_KERNEL, include_arch)
 INCLUDE_DIRS = INCLUDE_DIRS + ' ' + KERNEL_ARCH_INCLUDE
 
 # Set Environment
diff --git a/include/cycles.h b/include/cycles.h
index 01f36a9..e9b0e11 100644
--- a/include/cycles.h
+++ b/include/cycles.h
@@ -1,23 +1,50 @@
 #ifndef CYCLES_H
 #define CYCLES_H
 
-#ifdef __i386__
+#ifdef __x86_64__
+
+#define rdtscll(val) do { \
+	unsigned int __a,__d; \
+	__asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d)); \
+	(val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \
+} while(0)
+
+static __inline__ unsigned long long native_read_tsc(void)
+{
+	unsigned long long val;
+
+	__asm__ __volatile__("mfence":::"memory");
+	rdtscll(val);
+	__asm__ __volatile__("mfence":::"memory");
+
+	return val;
+}
 
-typedef unsigned long long cycles_t;
 
 #define CYCLES_FMT "llu"
 
-static inline cycles_t get_cycles(void) 
+typedef unsigned long long cycles_t;
+
+static inline cycles_t get_cycles(void)
 {
-        unsigned long long ret;
-        __asm__ __volatile__("rdtsc" : "=A" (ret));
-        return ret;
+	return native_read_tsc();
+}
+#elif defined __i386__
+static inline unsigned long long native_read_tsc(void) {
+	unsigned long long val;
+	__asm__ __volatile__("rdtsc" : "=A" (val));
+	return val;
 }
 
-#endif
+typedef unsigned long long cycles_t;
 
+#define CYCLES_FMT "llu"
 
-#ifdef __sparc__
+static inline cycles_t get_cycles(void)
+{
+        return native_read_tsc();
+}
+#elif defined __sparc__
 
 #define NPT_BIT 63
 
-- 
cgit v1.2.2