target/riscv: honour show_opcodes when disassembling

This makes the output suitable when used for plugins.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-30-alex.bennee@linaro.org>

disas/riscv.c

@@ -5192,19 +5192,21 @@ print_insn_riscv(bfd_vma memaddr, struct disassemble_info *info, rv_isa isa)
         }
     }
 
-    switch (len) {
-    case 2:
-        (*info->fprintf_func)(info->stream, INST_FMT_2, inst);
-        break;
-    case 4:
-        (*info->fprintf_func)(info->stream, INST_FMT_4, inst);
-        break;
-    case 6:
-        (*info->fprintf_func)(info->stream, INST_FMT_6, inst);
-        break;
-    default:
-        (*info->fprintf_func)(info->stream, INST_FMT_8, inst);
-        break;
+    if (info->show_opcodes) {
+        switch (len) {
+        case 2:
+            (*info->fprintf_func)(info->stream, INST_FMT_2, inst);
+            break;
+        case 4:
+            (*info->fprintf_func)(info->stream, INST_FMT_4, inst);
+            break;
+        case 6:
+            (*info->fprintf_func)(info->stream, INST_FMT_6, inst);
+            break;
+        default:
+            (*info->fprintf_func)(info->stream, INST_FMT_8, inst);
+            break;
+        }
     }
 
     disasm_inst(buf, sizeof(buf), isa, memaddr, inst,