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-rw-r--r--tools/testing/selftests/x86/helpers.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/testing/selftests/x86/helpers.h b/tools/testing/selftests/x86/helpers.h
new file mode 100644
index 0000000000..4ef42c4559
--- /dev/null
+++ b/tools/testing/selftests/x86/helpers.h
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#ifndef __SELFTESTS_X86_HELPERS_H
+#define __SELFTESTS_X86_HELPERS_H
+
+#include <asm/processor-flags.h>
+
+static inline unsigned long get_eflags(void)
+{
+#ifdef __x86_64__
+ return __builtin_ia32_readeflags_u64();
+#else
+ return __builtin_ia32_readeflags_u32();
+#endif
+}
+
+static inline void set_eflags(unsigned long eflags)
+{
+#ifdef __x86_64__
+ __builtin_ia32_writeeflags_u64(eflags);
+#else
+ __builtin_ia32_writeeflags_u32(eflags);
+#endif
+}
+
+#endif /* __SELFTESTS_X86_HELPERS_H */