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-rw-r--r--tools/testing/selftests/arm64/bti/compiler.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/arm64/bti/compiler.h b/tools/testing/selftests/arm64/bti/compiler.h
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index 000000000..ebb6204f4
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+++ b/tools/testing/selftests/arm64/bti/compiler.h
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+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Arm Limited
+ * Original author: Dave Martin <Dave.Martin@arm.com>
+ */
+
+#ifndef COMPILER_H
+#define COMPILER_H
+
+#define __always_unused __attribute__((__unused__))
+#define __noreturn __attribute__((__noreturn__))
+#define __unreachable() __builtin_unreachable()
+
+/* curse(e) has value e, but the compiler cannot assume so */
+#define curse(e) ({ \
+ __typeof__(e) __curse_e = (e); \
+ asm ("" : "+r" (__curse_e)); \
+ __curse_e; \
+})
+
+#endif /* ! COMPILER_H */