42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
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/*
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* Copyright 2018-2019, Haiku, Inc. All rights reserved
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Alexander von Gluck IV <kallisti5@unixzen.com>
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*/
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#ifndef _SYSTEM_ARCH_RISCV64_DEFS_H
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#define _SYSTEM_ARCH_RISCV64_DEFS_H
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#define SPINLOCK_PAUSE() do {} while (false)
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// Status register flags
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#define ARCH_SR_SIE 0x00000002 // Supervisor Interrupt Enable
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#define ARCH_SR_SPIE 0x00000020 // Previous Supervisor Interrupt En
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#define ARCH_SR_SPP 0x00000100 // Previously Supervisor
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#define ARCH_SR_SUM 0x00040000 // Supervisor may access user memory
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#define ARCH_SR_FS 0x00006000 // Floating Point Status
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#define ARCH_SR_FS_OFF 0x00000000
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#define ARCH_SR_FS_INITIAL 0x00002000
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#define ARCH_SR_FS_CLEAN 0x00004000
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#define ARCH_SR_FS_DIRTY 0x00006000
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#define ARCH_SR_XS 0x00018000 // Extension Status
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#define ARCH_SR_XS_OFF 0x00000000
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#define ARCH_SR_XS_INITIAL 0x00008000
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#define ARCH_SR_XS_CLEAN 0x00010000
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#define ARCH_SR_XS_DIRTY 0x00018000
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#define ARCH_SR_SD 0x8000000000000000 // FS/XS dirty
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// Interrupt Enable and Interrupt Pending
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#define ARCH_SIE_SSIE 0x00000002 // Software Interrupt Enable
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#define ARCH_SIE_STIE 0x00000020 // Timer Interrupt Enable
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#define ARCH_SIE_SEIE 0x00000200 // External Interrupt Enable
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#endif /* _SYSTEM_ARCH_RISCV64_DEFS_H */
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