From: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Date: Fri, 1 Jul 2022 09:34:04 +0000 (+0800)
Subject: target/loongarch: Fix the meaning of ECFG reg's VS field
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4623367697ebb531fce89a10f9c73a820a5ad82a;p=qemu.git

target/loongarch: Fix the meaning of ECFG reg's VS field

By the manual of LoongArch CSR, the VS field(18:16 bits) of
ECFG reg means that the number of instructions between each
exception entry is 2^VS.

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220701093407.2150607-9-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 47c0bdd1ac..d2d4667a34 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -223,6 +223,10 @@ static void loongarch_cpu_do_interrupt(CPUState *cs)
     env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, PLV, 0);
     env->CSR_CRMD = FIELD_DP64(env->CSR_CRMD, CSR_CRMD, IE, 0);
 
+    if (vec_size) {
+        vec_size = (1 << vec_size) * 4;
+    }
+
     if  (cs->exception_index == EXCCODE_INT) {
         /* Interrupt */
         uint32_t vector = 0;