forked from Mirrors/opensbi
b1d8c988bc
We don't need to set VSSTATUS.MXR bit in get_insn() for unpriv instruction read because MSTATUS.MXR bit applies to both "Stage1" and "Stage2" page tables. This also allows us to remove the "virt" parameter of get_insn() function. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com>
49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2019 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Anup Patel <anup.patel@wdc.com>
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*/
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#ifndef __RISCV_UNPRIV_H__
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#define __RISCV_UNPRIV_H__
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#include <sbi/sbi_types.h>
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struct sbi_scratch;
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struct unpriv_trap {
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unsigned long cause;
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unsigned long tval;
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};
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#define DECLARE_UNPRIVILEGED_LOAD_FUNCTION(type) \
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type load_##type(const type *addr, \
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struct sbi_scratch *scratch, \
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struct unpriv_trap *trap);
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#define DECLARE_UNPRIVILEGED_STORE_FUNCTION(type) \
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void store_##type(type *addr, type val, \
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struct sbi_scratch *scratch, \
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struct unpriv_trap *trap);
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(u8)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(u16)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(s8)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(s16)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(s32)
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DECLARE_UNPRIVILEGED_STORE_FUNCTION(u8)
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DECLARE_UNPRIVILEGED_STORE_FUNCTION(u16)
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DECLARE_UNPRIVILEGED_STORE_FUNCTION(u32)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(u32)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(u64)
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DECLARE_UNPRIVILEGED_STORE_FUNCTION(u64)
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DECLARE_UNPRIVILEGED_LOAD_FUNCTION(ulong)
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ulong get_insn(ulong mepc, struct sbi_scratch *scratch,
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struct unpriv_trap *trap);
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#endif
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