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https://github.com/riscv-software-src/opensbi.git
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c2acc5e5b0
Add misaligned load/store handling for the vector extension to the sbi_misaligned_ldst library. This implementation is inspired from the misaligned_vec_ldst implementation in the riscv-pk project. Co-developed-by: Zong Li <zong.li@sifive.com> Signed-off-by: Zong Li <zong.li@sifive.com> Signed-off-by: Nylon Chen <nylon.chen@sifive.com> Reviewed-by: Andy Chiu <andy.chiu@sifive.com> Reviewed-by: Anup Patel <anup@brainfault.org>
43 lines
1021 B
C
43 lines
1021 B
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 __SBI_TRAP_LDST_H__
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#define __SBI_TRAP_LDST_H__
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#include <sbi/sbi_types.h>
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#include <sbi/sbi_trap.h>
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union sbi_ldst_data {
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u64 data_u64;
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u32 data_u32;
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u8 data_bytes[8];
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ulong data_ulong;
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};
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int sbi_misaligned_load_handler(struct sbi_trap_context *tcntx);
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int sbi_misaligned_store_handler(struct sbi_trap_context *tcntx);
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int sbi_load_access_handler(struct sbi_trap_context *tcntx);
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int sbi_store_access_handler(struct sbi_trap_context *tcntx);
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int sbi_double_trap_handler(struct sbi_trap_context *tcntx);
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ulong sbi_misaligned_tinst_fixup(ulong orig_tinst, ulong new_tinst,
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ulong addr_offset);
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int sbi_misaligned_v_ld_emulator(int rlen, union sbi_ldst_data *out_val,
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struct sbi_trap_context *tcntx);
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int sbi_misaligned_v_st_emulator(int wlen, union sbi_ldst_data in_val,
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struct sbi_trap_context *tcntx);
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#endif
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