target/loongarch: Add avail_LSPW to check LSPW instructions

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20230822032724.1353391-13-gaosong@loongson.cn>
Message-Id: <20230822071959.35620-7-philmd@linaro.org>

target/loongarch/insn_trans/trans_privileged.c.inc

@@ -437,6 +437,10 @@ static bool trans_ldpte(DisasContext *ctx, arg_ldpte *a)
     TCGv_i32 mem_idx = tcg_constant_i32(ctx->mem_idx);
     TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
 
+    if (!avail_LSPW(ctx)) {
+        return true;
+    }
+
     if (check_plv(ctx)) {
         return false;
     }
@@ -450,6 +454,10 @@ static bool trans_lddir(DisasContext *ctx, arg_lddir *a)
     TCGv src = gpr_src(ctx, a->rj, EXT_NONE);
     TCGv dest = gpr_dst(ctx, a->rd, EXT_NONE);
 
+    if (!avail_LSPW(ctx)) {
+        return true;
+    }
+
     if (check_plv(ctx)) {
         return false;
     }

target/loongarch/translate.h

@@ -20,6 +20,7 @@
 #define avail_FP(C)    (FIELD_EX32((C)->cpucfg2, CPUCFG2, FP))
 #define avail_FP_SP(C) (FIELD_EX32((C)->cpucfg2, CPUCFG2, FP_SP))
 #define avail_FP_DP(C) (FIELD_EX32((C)->cpucfg2, CPUCFG2, FP_DP))
+#define avail_LSPW(C)  (FIELD_EX32((C)->cpucfg2, CPUCFG2, LSPW))
 
 /*
  * If an operation is being performed on less than TARGET_LONG_BITS,