Re: [Qemu-devel] [PATCH v2 5/7] target/m68k: add fsglmul and fsgldiv

[Richard Henderson]

On 06/26/2017 03:03 PM, Laurent Vivier wrote:

+void HELPER(fsglmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1)
+{
+    floatx80 a, b;
+
+    PREC_BEGIN(32);
+    a = floatx80_round(val0->d, &env->fp_status);
+    b = floatx80_round(val1->d, &env->fp_status);
+    res->d = floatx80_mul(a, b, &env->fp_status);
+    PREC_END();
+}
+

You need to set the rounding mode to truncate for the first two operations.


r~