Commit e35298cd authored by Blue Swirl's avatar Blue Swirl
Browse files

Generate better code for Sparc32 shifts 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4467 c046a42c-6fe2-441c-8c8c-71466251a162
parent 9a7f3228

target-sparc/translate.c

+21 −6
Original line number Diff line number Diff line
@@ -3008,18 +3008,33 @@ static void disas_sparc_insn(DisasContext * dc) 
                        break;

#ifndef TARGET_SPARC64

                    case 0x25:  /* sll */

                        if (IS_IMM) { /* immediate */

                            rs2 = GET_FIELDs(insn, 20, 31);

                            tcg_gen_shli_tl(cpu_dst, cpu_src1, rs2 & 0x1f);

                        } else { /* register */

                            tcg_gen_andi_tl(cpu_tmp0, cpu_src2, 0x1f);

                            tcg_gen_shl_tl(cpu_dst, cpu_src1, cpu_tmp0);

                        }

                        gen_movl_TN_reg(rd, cpu_dst);

                        break;

                    case 0x26:  /* srl */

                        if (IS_IMM) { /* immediate */

                            rs2 = GET_FIELDs(insn, 20, 31);

                            tcg_gen_shri_tl(cpu_dst, cpu_src1, rs2 & 0x1f);

                        } else { /* register */

                            tcg_gen_andi_tl(cpu_tmp0, cpu_src2, 0x1f);

                            tcg_gen_shr_tl(cpu_dst, cpu_src1, cpu_tmp0);

                        }

                        gen_movl_TN_reg(rd, cpu_dst);

                        break;

                    case 0x27:  /* sra */

                        if (IS_IMM) { /* immediate */

                            rs2 = GET_FIELDs(insn, 20, 31);

                            tcg_gen_sari_tl(cpu_dst, cpu_src1, rs2 & 0x1f);

                        } else { /* register */

                            tcg_gen_andi_tl(cpu_tmp0, cpu_src2, 0x1f);

                            tcg_gen_sar_tl(cpu_dst, cpu_src1, cpu_tmp0);

                        }

                        gen_movl_TN_reg(rd, cpu_dst);

                        break;

#endif