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target/loongarch/tlb_helper: Fix coverity integer overflow error 

Replace '1 << shift' with 'MAKE_64BIT_MASK(shift, 1)' to fix
unintentional integer overflow errors in tlb_helper file.

Fix coverity CID: 1489759 1489762

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220715060740.1500628-5-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Xiaojuan Yang 2022-07-15 14:07:39 +08:00 committed by Richard Henderson
parent e4ad16f492
commit 2b3ef8e5c6
1 changed files with 2 additions and 2 deletions
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target/loongarch/tlb_helper.c
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@ -298,7 +298,7 @@ static void invalidate_tlb_entry(CPULoongArchState *env, int index)
} else {
tlb_ps = FIELD_EX64(env->CSR_STLBPS, CSR_STLBPS, PS);
}
pagesize = 1 << tlb_ps;
pagesize = MAKE_64BIT_MASK(tlb_ps, 1);
mask = MAKE_64BIT_MASK(0, tlb_ps + 1);
if (tlb_v0) {
@ -736,7 +736,7 @@ void helper_ldpte(CPULoongArchState *env, target_ulong base, target_ulong odd,
(tmp0 & (~(1 << R_TLBENTRY_G_SHIFT)));
ps = ptbase + ptwidth - 1;
if (odd) {
tmp0 += (1 << ps);
tmp0 += MAKE_64BIT_MASK(ps, 1);
}
} else {
/* 0:64bit, 1:128bit, 2:192bit, 3:256bit */