add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/riscv/include/asm/asm.h
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@@ -1,14 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2015 Regents of the University of California
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- *
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- *   This program is free software; you can redistribute it and/or
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- *   modify it under the terms of the GNU General Public License
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- *   as published by the Free Software Foundation, version 2.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
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  */
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 #ifndef _ASM_RISCV_ASM_H
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@@ -30,6 +22,7 @@
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 #define REG_L		__REG_SEL(ld, lw)
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 #define REG_S		__REG_SEL(sd, sw)
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+#define REG_SC		__REG_SEL(sc.d, sc.w)
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 #define SZREG		__REG_SEL(8, 4)
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 #define LGREG		__REG_SEL(3, 2)
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