diff options
| -rw-r--r-- | target-ppc/translate.c | 42 |
1 files changed, 14 insertions, 28 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 4311119..f886441 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -1036,35 +1036,21 @@ static void gen_mullw(DisasContext *ctx) /* mullwo mullwo. */ static void gen_mullwo(DisasContext *ctx) { - int l1; - TCGv_i64 t0, t1; + TCGv_i32 t0 = tcg_temp_new_i32(); + TCGv_i32 t1 = tcg_temp_new_i32(); - t0 = tcg_temp_new_i64(); - t1 = tcg_temp_new_i64(); - l1 = gen_new_label(); - /* Start with XER OV disabled, the most likely case */ - tcg_gen_movi_tl(cpu_ov, 0); -#if defined(TARGET_PPC64) - tcg_gen_ext32s_i64(t0, cpu_gpr[rA(ctx->opcode)]); - tcg_gen_ext32s_i64(t1, cpu_gpr[rB(ctx->opcode)]); -#else - tcg_gen_ext_tl_i64(t0, cpu_gpr[rA(ctx->opcode)]); - tcg_gen_ext_tl_i64(t1, cpu_gpr[rB(ctx->opcode)]); -#endif - tcg_gen_mul_i64(t0, t0, t1); -#if defined(TARGET_PPC64) - tcg_gen_ext32s_i64(cpu_gpr[rD(ctx->opcode)], t0); - tcg_gen_brcond_i64(TCG_COND_EQ, t0, cpu_gpr[rD(ctx->opcode)], l1); -#else - tcg_gen_trunc_i64_tl(cpu_gpr[rD(ctx->opcode)], t0); - tcg_gen_ext32s_i64(t1, t0); - tcg_gen_brcond_i64(TCG_COND_EQ, t0, t1, l1); -#endif - tcg_gen_movi_tl(cpu_ov, 1); - tcg_gen_movi_tl(cpu_so, 1); - gen_set_label(l1); - tcg_temp_free_i64(t0); - tcg_temp_free_i64(t1); + tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]); + tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]); + tcg_gen_muls2_i32(t0, t1, t0, t1); + tcg_gen_ext_i32_tl(cpu_gpr[rD(ctx->opcode)], t0); + + tcg_gen_sari_i32(t0, t0, 31); + tcg_gen_setcond_i32(TCG_COND_NE, t0, t0, t1); + tcg_gen_extu_i32_tl(cpu_ov, t0); + tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); + + tcg_temp_free_i32(t0); + tcg_temp_free_i32(t1); if (unlikely(Rc(ctx->opcode) != 0)) gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]); } |