1 files changed, 29 insertions, 0 deletions
diff --git a/api/bits/x86_64/msr.h b/api/bits/x86_64/msr.h
new file mode 100644
index 0000000..a25af7d
--- /dev/null
+++ b/api/bits/x86_64/msr.h
@@ -0,0 +1,29 @@
+#include <stdint.h>
+
+#define MSR_INDEX_EFER 0xc0000080
+#define MSR_INDEX_STAR 0xc0000081
+#define MSR_INDEX_LSTAR 0xc0000082
+
+union msr_efer
+{
+	uint64_t value;
+};
+
+union msr_star
+{
+	struct
+	{
+		uint32_t target_eip;
+		uint16_t syscall_segment_base;
+		uint16_t sysret_segment_base;
+	}
+	fields;
+	uint64_t value;
+};
+
+union msr_lstar
+{
+	uint64_t target_rip;
+	uint64_t value;
+};
+