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target/riscv: debug: Restrict the range of tselect value can be written

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The value of tselect CSR can be written should be limited within the
range of supported triggers number.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
Message-Id: <20220909134215.1843865-5-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Frank Chang 2022-09-09 21:42:11 +08:00 committed by Alistair Francis
parent 9495c4888a
commit 6ea8d3fc40
1 changed files with 3 additions and 6 deletions
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9
target/riscv/debug.c
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@ -127,10 +127,6 @@ bool tdata_available(CPURISCVState *env, int tdata_index)
return false;
}
if (unlikely(env->trigger_cur >= RV_MAX_TRIGGERS)) {
return false;
}
return tdata_mapping[trigger_type][tdata_index];
}
@ -141,8 +137,9 @@ target_ulong tselect_csr_read(CPURISCVState *env)
void tselect_csr_write(CPURISCVState *env, target_ulong val)
{
/* all target_ulong bits of tselect are implemented */
env->trigger_cur = val;
if (val < RV_MAX_TRIGGERS) {
env->trigger_cur = val;
}
}
static target_ulong tdata1_validate(CPURISCVState *env, target_ulong val,