On 09/08/2016 03:31 PM, Michael Rolnik wrote:
+ tcg_gen_ext_i32_i64(srcA, src1);
+ tcg_gen_ext_i32_i64(srcB, src2);
+
+ tcg_gen_mul_i64(rslt, srcA, srcB);
+
+ tcg_gen_trunc_i64_tl(dest, rslt);
+
+ if (ctx->opt.f) {
+ TCGv_i64 temp = tcg_temp_new_i64();
+
+ tcg_gen_setcond_tl(TCG_COND_EQ, cpu_Zf, dest, ctx->zero);
+
+ tcg_gen_trunc_i64_tl(cpu_Nf, rslt);
+ tcg_gen_shri_tl(cpu_Nf, cpu_Nf, 31);
+
+ tcg_gen_ext_i32_i64(temp, dest);
+ tcg_gen_setcond_i64(TCG_COND_NE, temp, temp, rslt);
+ tcg_gen_trunc_i64_tl(cpu_Cf, temp);
+
+ tcg_temp_free_i64(temp);
+ }
It's probably easier to do this with tcg_gen_muls2_tl.
r~
