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-rw-r--r--arch/riscv/include/uapi/asm/hwcap.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/hwcap.h b/arch/riscv/include/uapi/asm/hwcap.h
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index 000000000000..f333221c9ab2
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+++ b/arch/riscv/include/uapi/asm/hwcap.h
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+/*
+ * Copied from arch/arm64/include/asm/hwcap.h
+ *
+ * Copyright (C) 2012 ARM Ltd.
+ * Copyright (C) 2017 SiFive
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __UAPI_ASM_HWCAP_H
+#define __UAPI_ASM_HWCAP_H
+
+/*
+ * Linux saves the floating-point registers according to the ISA Linux is
+ * executing on, as opposed to the ISA the user program is compiled for. This
+ * is necessary for a handful of esoteric use cases: for example, userpsace
+ * threading libraries must be able to examine the actual machine state in
+ * order to fully reconstruct the state of a thread.
+ */
+#define COMPAT_HWCAP_ISA_I (1 << ('I' - 'A'))
+#define COMPAT_HWCAP_ISA_M (1 << ('M' - 'A'))
+#define COMPAT_HWCAP_ISA_A (1 << ('A' - 'A'))
+#define COMPAT_HWCAP_ISA_F (1 << ('F' - 'A'))
+#define COMPAT_HWCAP_ISA_D (1 << ('D' - 'A'))
+#define COMPAT_HWCAP_ISA_C (1 << ('C' - 'A'))
+
+#endif