1 files changed, 2 insertions, 13 deletions
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 73c8863134..8399a2c1f6 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -10765,19 +10765,8 @@ static void disas_thumb_insn(DisasContext *s, uint32_t insn)
         /* misc */
         op = (insn >> 8) & 0xf;
         switch (op) {
-        case 0:
-            /*
-             * 0b1011_0000_xxxx_xxxx
-             *  - ADD (SP plus immediate)
-             *  - SUB (SP minus immediate)
-             */
-            tmp = load_reg(s, 13);
-            val = (insn & 0x7f) * 4;
-            if (insn & (1 << 7))
-                val = -(int32_t)val;
-            tcg_gen_addi_i32(tmp, tmp, val);
-            store_sp_checked(s, tmp);
-            break;
+        case 0: /* add/sub (sp, immediate), in decodetree */
+            goto illegal_op;
 
         case 2: /* sign/zero extend.  */
             ARCH(6);