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target/riscv: Correct a comment in riscv_csrrw()

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When privilege check fails, RISCV_EXCP_ILLEGAL_INST is returned,
not -1 (RISCV_EXCP_NONE).

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20210807141025.31808-1-bmeng.cn@gmail.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Bin Meng 2021-08-07 22:10:25 +08:00 committed by Alistair Francis
parent 58bde469ba
commit 65e728a28a
1 changed files with 1 additions and 1 deletions
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target/riscv/csr.c
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@ -1423,7 +1423,7 @@ RISCVException riscv_csrrw(CPURISCVState *env, int csrno,
target_ulong old_value;
RISCVCPU *cpu = env_archcpu(env);
/* check privileges and return -1 if check fails */
/* check privileges and return RISCV_EXCP_ILLEGAL_INST if check fails */
#if !defined(CONFIG_USER_ONLY)
int effective_priv = env->priv;
int read_only = get_field(csrno, 0xC00) == 3;