Re: [Qemu-devel] [PATCH v3 14/16] target-m68k: add explicit single and double precision operations

[Richard Henderson]

On 02/07/2017 11:59 AM, Laurent Vivier wrote:
+    case 0: /* fmove */
+        break;
+    case 0x40: /* fsmove */
+        gen_helper_redf32_FP0(cpu_env);
+        gen_helper_extf32_FP0(cpu_env);
+        break;
+    case 0x44: /* fdmove */
+        gen_helper_redf64_FP0(cpu_env);
+        gen_helper_extf64_FP0(cpu_env);
         break;

This is going to produce double-rounding errors.  Better to properly set the 
rounding precision first and convert once.


r~