add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/arc/include/asm/irqflags-arcv2.h
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@@ -1,9 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #ifndef __ASM_IRQFLAGS_ARCV2_H
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@@ -44,7 +41,13 @@
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 #define ARCV2_IRQ_DEF_PRIO	1
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 /* seed value for status register */
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-#define ISA_INIT_STATUS_BITS	(STATUS_IE_MASK | STATUS_AD_MASK | \
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+#ifdef CONFIG_ARC_USE_UNALIGNED_MEM_ACCESS
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+#define __AD_ENB	STATUS_AD_MASK
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+#else
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+#define __AD_ENB	0
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+#endif
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+
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+#define ISA_INIT_STATUS_BITS	(STATUS_IE_MASK | __AD_ENB | \
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 					(ARCV2_IRQ_DEF_PRIO << 1))
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 #ifndef __ASSEMBLY__