xref: /gem5/src/arch/x86/isa/decoder/x87.isa

// Copyright (c) 2007 The Hewlett-Packard Development Company
// All rights reserved.
//
// The license below extends only to copyright in the software and shall
// not be construed as granting a license to any other intellectual
// property including but not limited to intellectual property relating
// to a hardware implementation of the functionality of the software
// licensed hereunder.  You may use the software subject to the license
// terms below provided that you ensure that this notice is replicated
// unmodified and in its entirety in all distributions of the software,
// modified or unmodified, in source code or in binary form.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met: redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer;
// redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution;
// neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Authors: Gabe Black

format WarnUnimpl {
    0x1B: decode OPCODE_OP_BOTTOM3 {
        //0x0: esc0();
        0x0: decode MODRM_REG {
            0x0: fadd();
            0x1: fmul();
            0x2: fcom();
            0x3: fcomp();
            0x4: fsub();
            0x5: fsubr();
            0x6: fdiv();
            0x7: fdivr();
        }
        //0x1: esc1();
        0x1: decode MODRM_REG {
            0x0: fld();
            0x1: decode MODRM_MOD {
                0x3: fxch();
                default: Inst::UD2();
            }
            0x2: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x0: fnop();
                    default: Inst::UD2();
                }
                default: fst();
            }
            0x3: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fstp();
            }
            0x4: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x0: fchs();
                    0x1: fabs();
                    0x4: ftst();
                    0x5: fxam();
                    default: Inst::UD2();
                }
                default: fldenv();
            }
            0x5: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x0: fld1();
                    0x1: fldl2t();
                    0x2: fldl2e();
                    0x3: fldpi();
                    0x4: fldlg2();
                    0x5: fldln2();
                    0x6: fldz();
                }
                default: fldcw_Mw();
            }
            0x6: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x0: f2xm1();
                    0x1: fyl2x();
                    0x2: fptan();
                    0x3: fpatan();
                    0x4: fxtract();
                    0x5: fprem1();
                    0x6: fdecstp();
                    0x7: fincstp();
                }
                default: fnstenv();
            }
            0x7: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x0: fprem();
                    0x1: fyl2xp1();
                    0x2: fsqrt();
                    0x3: fsincos();
                    0x4: frndint();
                    0x5: fscale();
                    0x6: fsin();
                    0x7: fcos();
                }
                default: fnstcw_Mw();
            }
        }
        //0x2: esc2();
        0x2: decode MODRM_REG {
            0x0: decode MODRM_MOD {
                0x3: fcmovb();
                default: fiadd();
            }
            0x1: decode MODRM_MOD {
                0x3: fcmove();
                default: fimul();
            }
            0x2: decode MODRM_MOD {
                0x3: fcmovbe();
                default: ficom();
            }
            0x3: decode MODRM_MOD {
                0x3: fcmovu();
                default: ficomp();
            }
            0x4: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fisub();
            }
            0x5: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x1: fucompp();
                    default: Inst::UD2();
                }
                default: fisubr();
            }
            0x6: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fidiv();
            }
            0x7: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fidivr();
            }
        }
        //0x3: esc3();
        0x3: decode MODRM_REG {
            0x0: decode MODRM_MOD {
                0x3: fcmovnb();
                default: fild();
            }
            0x1: decode MODRM_MOD {
                0x3: fcmovne();
                default: fisttp();
            }
            0x2: decode MODRM_MOD {
                0x3: fcmovnbe();
                default: fist();
            }
            0x3: decode MODRM_MOD {
                0x3: fcmovnu();
                default: fistp();
            }
            0x4: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x2: fnclex();
                    0x3: fninit();
                    default: Inst::UD2();
                }
                default: Inst::UD2();
            }
            0x5: decode MODRM_MOD {
                0x3: fucomi();
                default: fld();
            }
            0x6: decode MODRM_MOD {
                0x3: fcomi();
                default: Inst::UD2();
            }
            0x7: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fstp();
            }
        }
        //0x4: esc4();
        0x4: decode MODRM_REG {
            0x0: fadd();
            0x1: fmul();
            0x2: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fcom();
            }
            0x3: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fcomp();
            }
            0x4: decode MODRM_MOD {
                0x3: fsubr();
                default: fsub();
            }
            0x5: decode MODRM_MOD {
                0x3: fsub();
                default: fsubr();
            }
            0x6: decode MODRM_MOD {
                0x3: fdivr();
                default: fdiv();
            }
            0x7: decode MODRM_MOD {
                0x3: fdiv();
                default: fdivr();
            }
        }
        //0x5: esc5();
        0x5: decode MODRM_REG {
            0x0: decode MODRM_MOD {
                0x3: ffree();
                default: Inst::FLD(Mq);
            }
            0x1: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fisttp();
            }
            0x2: Inst::FST(Eq);
            0x3: Inst::FSTP(Eq);
            0x4: decode MODRM_MOD {
                0x3: fucom();
                default: frstor();
            }
            0x5: decode MODRM_MOD {
                0x3: fucomp();
                default: Inst::UD2();
            }
            0x6: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fnsave();
            }
            0x7: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fnstsw();
            }
        }
        //0x6: esc6();
        0x6: decode MODRM_REG {
            0x0: decode MODRM_MOD {
                0x3: faddp();
                default: fiadd();
            }
            0x1: decode MODRM_MOD {
                0x3: fmulp();
                default: fimul();
            }
            0x2: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: ficom();
            }
            0x3: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x1: fcompp();
                    default: Inst::UD2();
                }
                default: ficomp();
            }
            0x4: decode MODRM_MOD {
                0x3: fsubrp();
                default: fisub();
            }
            0x5: decode MODRM_MOD {
                0x3: fsubp();
                default: fisubr();
            }
            0x6: decode MODRM_MOD {
                0x3: fdivrp();
                default: fidiv();
            }
            0x7: decode MODRM_MOD {
                0x3: fdivp();
                default: fidivr();
            }
        }
        //0x7: esc7();
        0x7: decode MODRM_REG {
            0x0: decode MODRM_MOD {
                // The ffreep instruction isn't entirely real. It should work
                // the same as ffree but then also pop the register stack.
                0x3: ffreep();
                default: fild();
            }
            0x1: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fisttp();
            }
            0x2: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fist();
            }
            0x3: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fistp();
            }
            0x4: decode MODRM_MOD {
                0x3: decode MODRM_RM {
                    0x0: fnstsw();
                    default: Inst::UD2();
                }
                default: fbld();
            }
            0x5: decode MODRM_MOD {
                0x3: fucomip();
                default: fild();
            }
            0x6: decode MODRM_MOD {
                0x3: fcomip();
                default: fbstp();
            }
            0x7: decode MODRM_MOD {
                0x3: Inst::UD2();
                default: fistp();
            }
        }
    }
}