decoder.isa

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· ISA 代码 · 共 1,286 行 · 第 1/5 页

                                0x0: c_f_s({{ cond = 0; }}, SinglePrecision,
                                           UnorderedFalse);
                                0x1: c_un_s({{ cond = 0; }}, SinglePrecision,
                                            UnorderedTrue);
                                0x2: c_eq_s({{ cond = (Fs.sf == Ft.sf); }},
                                            UnorderedFalse);
                                0x3: c_ueq_s({{ cond = (Fs.sf == Ft.sf); }},
                                             UnorderedTrue);
                                0x4: c_olt_s({{ cond = (Fs.sf < Ft.sf);	}},
                                             UnorderedFalse);
                                0x5: c_ult_s({{ cond = (Fs.sf < Ft.sf); }},
                                             UnorderedTrue);
                                0x6: c_ole_s({{ cond = (Fs.sf <= Ft.sf); }},
                                             UnorderedFalse);
                                0x7: c_ule_s({{ cond = (Fs.sf <= Ft.sf); }},
                                             UnorderedTrue);
                            }
                        }

                        0x7: decode FUNCTION_LO {
                            format FloatCompareOp {
                                0x0: c_sf_s({{ cond = 0; }}, SinglePrecision,
                                            UnorderedFalse, QnanException);
                                0x1: c_ngle_s({{ cond = 0; }}, SinglePrecision,
                                              UnorderedTrue, QnanException);
                                0x2: c_seq_s({{ cond = (Fs.sf == Ft.sf);}},
                                             UnorderedFalse, QnanException);
                                0x3: c_ngl_s({{ cond = (Fs.sf == Ft.sf); }},
                                             UnorderedTrue, QnanException);
                                0x4: c_lt_s({{ cond = (Fs.sf < Ft.sf); }},
                                            UnorderedFalse, QnanException);
                                0x5: c_nge_s({{ cond = (Fs.sf < Ft.sf); }},
                                             UnorderedTrue, QnanException);
                                0x6: c_le_s({{ cond = (Fs.sf <= Ft.sf); }},
                                            UnorderedFalse, QnanException);
                                0x7: c_ngt_s({{ cond = (Fs.sf <= Ft.sf); }},
                                             UnorderedTrue, QnanException);
                            }
                        }
                    }

                    //Table A-15 MIPS32 COP1 Encoding of Function Field When rs=D
                    0x1: decode FUNCTION_HI {
                        0x0: decode FUNCTION_LO {
                            format FloatOp {
                                0x0: add_d({{ Fd.df = Fs.df + Ft.df; }});
                                0x1: sub_d({{ Fd.df = Fs.df - Ft.df; }});
                                0x2: mul_d({{ Fd.df = Fs.df * Ft.df; }});
                                0x3: div_d({{ Fd.df = Fs.df / Ft.df; }});
                                0x4: sqrt_d({{ Fd.df = sqrt(Fs.df);  }});
                                0x5: abs_d({{ Fd.df = fabs(Fs.df);   }});
                                0x7: neg_d({{ Fd.df = -1 * Fs.df;    }});
                            }

                            0x6: BasicOp::mov_d({{ Fd.df = Fs.df;    }});
                        }

                        0x1: decode FUNCTION_LO {
                            format FloatConvertOp {
                                0x0: round_l_d({{ val = Fs.df; }}, ToLong,
                                               Round);
                                0x1: trunc_l_d({{ val = Fs.df; }}, ToLong,
                                               Trunc);
                                0x2: ceil_l_d({{ val = Fs.df; }}, ToLong,
                                               Ceil);
                                0x3: floor_l_d({{ val = Fs.df; }}, ToLong,
                                               Floor);
                                0x4: round_w_d({{ val = Fs.df; }}, ToWord,
                                               Round);
                                0x5: trunc_w_d({{ val = Fs.df; }}, ToWord,
                                               Trunc);
                                0x6: ceil_w_d({{ val = Fs.df; }}, ToWord,
                                               Ceil);
                                0x7: floor_w_d({{ val = Fs.df; }}, ToWord,
                                               Floor);
                            }
                        }

                        0x2: decode FUNCTION_LO {
                            0x1: decode MOVCF {
                                format BasicOp {
                                    0x0: movf_d({{ Fd.df = (getCondCode(FCSR,CC) == 0) ?
                                                       Fs.df : Fd.df;
                                                }});
                                    0x1: movt_d({{ Fd.df = (getCondCode(FCSR,CC) == 1) ?
                                                       Fs.df : Fd.df;
                                                }});
                                }
                            }

                            format BasicOp {
                                0x2: movz_d({{ Fd.df = (Rt == 0) ? Fs.df : Fd.df; }});
                                0x3: movn_d({{ Fd.df = (Rt != 0) ? Fs.df : Fd.df; }});
                            }

                            format FloatOp {
                                0x5: recip_d({{ Fd.df = 1 / Fs.df }});
                                0x6: rsqrt_d({{ Fd.df = 1 / sqrt(Fs.df) }});
                            }
                            format CP1Unimpl {
                              default: unknown();
                            }

                        }
                        0x4: decode FUNCTION_LO {
                            format FloatConvertOp {
                                0x0: cvt_s_d({{ val = Fs.df; }}, ToSingle);
                                0x4: cvt_w_d({{ val = Fs.df; }}, ToWord);
                                0x5: cvt_l_d({{ val = Fs.df; }}, ToLong);
                            }
                           default: CP1Unimpl::unknown();
                        }

                        0x6: decode FUNCTION_LO {
                            format FloatCompareOp {
                                0x0: c_f_d({{ cond = 0; }}, DoublePrecision,
                                           UnorderedFalse);
                                0x1: c_un_d({{ cond = 0; }}, DoublePrecision,
                                            UnorderedTrue);
                                0x2: c_eq_d({{ cond = (Fs.df == Ft.df); }},
                                            UnorderedFalse);
                                0x3: c_ueq_d({{ cond = (Fs.df == Ft.df); }},
                                             UnorderedTrue);
                                0x4: c_olt_d({{ cond = (Fs.df < Ft.df);	}},
                                             UnorderedFalse);
                                0x5: c_ult_d({{ cond = (Fs.df < Ft.df); }},
                                             UnorderedTrue);
                                0x6: c_ole_d({{ cond = (Fs.df <= Ft.df); }},
                                             UnorderedFalse);
                                0x7: c_ule_d({{ cond = (Fs.df <= Ft.df); }},
                                             UnorderedTrue);
                            }
                        }

                        0x7: decode FUNCTION_LO {
                            format FloatCompareOp {
                                0x0: c_sf_d({{ cond = 0; }}, DoublePrecision,
                                            UnorderedFalse, QnanException);
                                0x1: c_ngle_d({{ cond = 0; }}, DoublePrecision,
                                              UnorderedTrue, QnanException);
                                0x2: c_seq_d({{ cond = (Fs.df == Ft.df); }},
                                             UnorderedFalse, QnanException);
                                0x3: c_ngl_d({{ cond = (Fs.df == Ft.df); }},
                                             UnorderedTrue, QnanException);
                                0x4: c_lt_d({{ cond = (Fs.df < Ft.df); }},
                                            UnorderedFalse, QnanException);
                                0x5: c_nge_d({{ cond = (Fs.df < Ft.df); }},
                                             UnorderedTrue, QnanException);
                                0x6: c_le_d({{ cond = (Fs.df <= Ft.df); }},
                                            UnorderedFalse, QnanException);
                                0x7: c_ngt_d({{ cond = (Fs.df <= Ft.df); }},
                                             UnorderedTrue, QnanException);
                            }
                        }
                       default: CP1Unimpl::unknown();
                    }
                    0x2: CP1Unimpl::unknown();
                    0x3: CP1Unimpl::unknown();
                    0x7: CP1Unimpl::unknown();

                    //Table A-16 MIPS32 COP1 Encoding of Function Field When rs=W
                    0x4: decode FUNCTION {
                        format FloatConvertOp {
                            0x20: cvt_s_w({{ val = Fs.uw; }}, ToSingle);
                            0x21: cvt_d_w({{ val = Fs.uw; }}, ToDouble);
                            0x26: CP1Unimpl::cvt_ps_w();
                        }
                       default: CP1Unimpl::unknown();
                    }

                    //Table A-16 MIPS32 COP1 Encoding of Function Field When rs=L1
                    //Note: "1. Format type L is legal only if 64-bit floating point operations
                    //are enabled."
                    0x5: decode FUNCTION_HI {
                        format FloatConvertOp {
                            0x20: cvt_s_l({{ val = Fs.ud; }}, ToSingle);
                            0x21: cvt_d_l({{ val = Fs.ud; }}, ToDouble);
                            0x26: CP1Unimpl::cvt_ps_l();
                        }
                       default: CP1Unimpl::unknown();
                    }

                    //Table A-17 MIPS64 COP1 Encoding of Function Field When rs=PS1
                    //Note: "1. Format type PS is legal only if 64-bit floating point operations
                    //are enabled. "
                    0x6: decode FUNCTION_HI {
                        0x0: decode FUNCTION_LO {
                            format Float64Op {
                                0x0: add_ps({{
                                    Fd1.sf = Fs1.sf + Ft2.sf;
                                    Fd2.sf = Fs2.sf + Ft2.sf;
                                }});
                                0x1: sub_ps({{
                                    Fd1.sf = Fs1.sf - Ft2.sf;
                                    Fd2.sf = Fs2.sf - Ft2.sf;
                                }});
                                0x2: mul_ps({{
                                    Fd1.sf = Fs1.sf * Ft2.sf;
                                    Fd2.sf = Fs2.sf * Ft2.sf;
                                }});
                                0x5: abs_ps({{
                                    Fd1.sf = fabs(Fs1.sf);
                                    Fd2.sf = fabs(Fs2.sf);
                                }});
                                0x6: mov_ps({{
                                    Fd1.sf = Fs1.sf;
                                    Fd2.sf = Fs2.sf;
                                }});
                                0x7: neg_ps({{
                                    Fd1.sf = -(Fs1.sf);
                                    Fd2.sf = -(Fs2.sf);
                                }});
                            default: CP1Unimpl::unknown();
                            }
                        }
                        0x1: CP1Unimpl::unknown();
                        0x2: decode FUNCTION_LO {
                            0x1: decode MOVCF {
                                format Float64Op {
                                    0x0: movf_ps({{
                                        Fd1 = (getCondCode(FCSR, CC) == 0) ?
                                            Fs1 : Fd1;
                                        Fd2 = (getCondCode(FCSR, CC+1) == 0) ?
                                            Fs2 : Fd2;
                                    }});
                                    0x1: movt_ps({{
                                        Fd2 = (getCondCode(FCSR, CC) == 1) ?
                                            Fs1 : Fd1;
                                        Fd2 = (getCondCode(FCSR, CC+1) == 1) ?
                                            Fs2 : Fd2;
                                    }});
                                }
                            }

                            format Float64Op {
                                0x2: movz_ps({{
                                    Fd1 = (getCondCode(FCSR, CC) == 0) ?
                                        Fs1 : Fd1;
                                    Fd2 = (getCondCode(FCSR, CC) == 0) ?
                                        Fs2 : Fd2;
                                }});
                                0x3: movn_ps({{
                                    Fd1 = (getCondCode(FCSR, CC) == 1) ?
                                        Fs1 : Fd1;
                                    Fd2 = (getCondCode(FCSR, CC) == 1) ?
                                        Fs2 : Fd2;
                                }});
                            }
                           default: CP1Unimpl::unknown();

                        }
                        0x3: CP1Unimpl::unknown();
                        0x4: decode FUNCTION_LO {
                            0x0: FloatOp::cvt_s_pu({{ Fd