target/loongarch: check_vec support check LASX instructions

Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Song Gao <gaosong@loongson.cn> Message-Id: <20230914022645.1151356-13-gaosong@loongson.cn>
qemu · Sep 20, 2023 · b8f1bdf · b8f1bdf
1 parent 008a3b1
commit b8f1bdf
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Showing 3 changed files with 10 additions and 0 deletions.
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
@@ -55,6 +55,7 @@ static const char * const excp_names[] = {
     [EXCCODE_DBP] = "Debug breakpoint",
     [EXCCODE_BCE] = "Bound Check Exception",
     [EXCCODE_SXD] = "128 bit vector instructions Disable exception",
+    [EXCCODE_ASXD] = "256 bit vector instructions Disable exception",
 };
 
 const char *loongarch_exception_name(int32_t exception)
@@ -190,6 +191,7 @@ static void loongarch_cpu_do_interrupt(CPUState *cs)
     case EXCCODE_FPD:
     case EXCCODE_FPE:
     case EXCCODE_SXD:
+    case EXCCODE_ASXD:
         env->CSR_BADV = env->pc;
         QEMU_FALLTHROUGH;
     case EXCCODE_BCE:

diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h
@@ -462,6 +462,7 @@ static inline void set_pc(CPULoongArchState *env, uint64_t value)
 #define HW_FLAGS_CRMD_PG    R_CSR_CRMD_PG_MASK   /* 0x10 */
 #define HW_FLAGS_EUEN_FPE   0x04
 #define HW_FLAGS_EUEN_SXE   0x08
+#define HW_FLAGS_EUEN_ASXE  0x10
 #define HW_FLAGS_VA32       0x20
 
 static inline void cpu_get_tb_cpu_state(CPULoongArchState *env, vaddr *pc,
@@ -472,6 +473,7 @@ static inline void cpu_get_tb_cpu_state(CPULoongArchState *env, vaddr *pc,
     *flags = env->CSR_CRMD & (R_CSR_CRMD_PLV_MASK | R_CSR_CRMD_PG_MASK);
     *flags |= FIELD_EX64(env->CSR_EUEN, CSR_EUEN, FPE) * HW_FLAGS_EUEN_FPE;
     *flags |= FIELD_EX64(env->CSR_EUEN, CSR_EUEN, SXE) * HW_FLAGS_EUEN_SXE;
+    *flags |= FIELD_EX64(env->CSR_EUEN, CSR_EUEN, ASXE) * HW_FLAGS_EUEN_ASXE;
     *flags |= is_va32(env) * HW_FLAGS_VA32;
 }
 

diff --git a/target/loongarch/insn_trans/trans_vec.c.inc b/target/loongarch/insn_trans/trans_vec.c.inc
@@ -12,6 +12,12 @@ static bool check_vec(DisasContext *ctx, uint32_t oprsz)
         generate_exception(ctx, EXCCODE_SXD);
         return false;
     }
+
+    if ((oprsz == 32) && ((ctx->base.tb->flags & HW_FLAGS_EUEN_ASXE) == 0)) {
+        generate_exception(ctx, EXCCODE_ASXD);
+        return false;
+    }
+
     return true;
 }