Initial import of qemu-2.4.1HEADmaster

1 files changed, 28 insertions, 0 deletions

diff --git a/roms/ipxe/src/arch/i386/include/bits/profile.h b/roms/ipxe/src/arch/i386/include/bits/profile.h
new file mode 100644
index 00000000..f3ee54ae
--- /dev/null
+++ b/roms/ipxe/src/arch/i386/include/bits/profile.h
@@ -0,0 +1,28 @@
+#ifndef _BITS_PROFILE_H
+#define _BITS_PROFILE_H
+
+/** @file
+ *
+ * Profiling
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+
+/**
+ * Get profiling timestamp
+ *
+ * @ret timestamp	Timestamp
+ */
+static inline __attribute__ (( always_inline )) uint64_t
+profile_timestamp ( void ) {
+	uint64_t tsc;
+
+	/* Read timestamp counter */
+	__asm__ __volatile__ ( "rdtsc" : "=A" ( tsc ) );
+	return tsc;
+}
+
+#endif /* _BITS_PROFILE_H */