sim/mips/mips3d.igen

// -*- C -*-

// Simulator definition for the MIPS MIPS-3D ASE.
// Copyright (C) 2002-2025 Free Software Foundation, Inc.
// Contributed by Ed Satterthwaite and Chris Demetriou, of Broadcom
// Corporation (SiByte).
//
// This file is part of GDB, the GNU debugger.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

//  Reference: MIPS64 Architecture for Programmers Volume IV-c:
//             The MIPS-3D Application-Specific Extension to the
//             MIPS64 Architecture.  (MIPS Document MD00099)


010001,10,110,5.FT,5.FS,5.FD,011000:COP1:64,f::ADDR.PS
"addr.ps f<FD>, f<FS>, f<FT>"
*mips3d:
{
  /* fd.PL = ft.PU + ft.PL;  fd.PU = fs.PU + fs.PL;  */
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  StoreFPR (FD, fmt_ps, AddR (ValueFPR (FS, fmt_ps),
			      ValueFPR (FT, fmt_ps), fmt_ps));
}


010001,01001,3.CC,0,1.TF,16.OFFSET:COP1:64,f::BC1ANY2tf
"bc1any2%s<TF> <CC>, %#lx<OFFSET>"
*mips3d:
{
  address_word offset;
  int cc = CC;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  if ((cc & 0x1) != 0)
    Unpredictable ();
  if ((GETFCC (cc) == TF) || (GETFCC (cc + 1) == TF))
    {
      offset = (EXTEND16 (OFFSET) << 2);
      DELAY_SLOT (NIA + offset);
    }
}


010001,01010,3.CC,0,1.TF,16.OFFSET:COP1:64,f::BC1ANY4tf
"bc1any4%s<TF> <CC>, %#lx<OFFSET>"
*mips3d:
{
  address_word offset;
  int cc = CC;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  if ((cc & 0x3) != 0)
    Unpredictable ();
  if ((GETFCC (cc) == TF)
      || (GETFCC (cc + 1) == TF)
      || (GETFCC (cc + 2) == TF)
      || (GETFCC (cc + 3) == TF))
    {
      offset = (EXTEND16 (OFFSET) << 2);
      DELAY_SLOT (NIA + offset);
    }
}


010001,10,3.FMT,5.FT,5.FS,3.CC,01,11,4.COND:COP1:64,f::CABS.cond.fmt
"cabs.%s<COND>.%s<FMT> <CC>, f<FS>, f<FT>"
*mips3d:
{
  int fmt = FMT;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  check_fmt_p (SD_, fmt, instruction_0);
  CompareAbs (ValueFPR (FS, fmt), ValueFPR (FT, fmt), fmt, COND, CC);
  TRACE_ALU_RESULT (ValueFCR (31));
}


010001,10,110,00000,5.FS,5.FD,100100:COP1:64,f::CVT.PW.PS
"cvt.pw.ps f<FD>, f<FS>"
*mips3d:
{
  /* fd.pu = cvt_rnd (fs.pu); fd.pl = cvt_rnd (fs.pl);  */
  /* fmt_pw is fmt_long for 64 bit transfers, but cvt encoding is fmt_word.  */
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  StoreFPR (FD, fmt_pw, ConvertPS (GETRM (), ValueFPR (FS, fmt_ps),
				   fmt_ps, fmt_word));
}


010001,10,100,00000,5.FS,5.FD,100110:COP1:64,f::CVT.PS.PW
"cvt.ps.pw f<FD>, f<FS>"
*mips3d:
{
  /* fd.pl = cvt_rnd (fs.pl); fd.pu = cvt_rnd (fs.pu);  */
  /* fmt_pw is fmt_long for 64 bit transfers, but cvt encoding is fmt_word.  */
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  StoreFPR (FD, fmt_ps, ConvertPS (GETRM (), ValueFPR (FS, fmt_pw),
				   fmt_word, fmt_ps));
}


010001,10,110,5.FT,5.FS,5.FD,011010:COP1:64,f::MULR.PS
"mulr.ps f<FD>, f<FS>, f<FT>"
*mips3d:
{
  /* fd.PL = ft.PU * ft.PL;  fd.PU = fs.PU * fs.PL;  */
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  StoreFPR (FD, fmt_ps, MultiplyR (ValueFPR (FS, fmt_ps),
				   ValueFPR (FT, fmt_ps), fmt_ps));
}


010001,10,3.FMT,00000,5.FS,5.FD,011101:COP1:64,f::RECIP1.fmt
"recip1.%s<FMT> f<FD>, f<FS>"
*mips3d:
{
  int fmt = FMT;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  check_fmt_p (SD_, fmt, instruction_0);
  StoreFPR (FD, fmt, Recip1 (ValueFPR (FS, fmt), fmt));
}


010001,10,3.FMT,5.FT,5.FS,5.FD,011100:COP1:64,f::RECIP2.fmt
"recip2.%s<FMT> f<FD>, f<FS>, f<FT>"
*mips3d:
{
  int fmt = FMT;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  check_fmt_p (SD_, fmt, instruction_0);
  StoreFPR (FD, fmt, Recip2 (ValueFPR (FS, fmt), ValueFPR (FT, fmt), fmt));
}


010001,10,3.FMT,00000,5.FS,5.FD,011110:COP1:64,f::RSQRT1.fmt
"rsqrt1.%s<FMT> f<FD>, f<FS>"
*mips3d:
{
  int fmt = FMT;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  check_fmt_p (SD_, fmt, instruction_0);
  StoreFPR (FD, fmt, RSquareRoot1 (ValueFPR (FS, fmt), fmt));
}


010001,10,3.FMT,5.FT,5.FS,5.FD,011111:COP1:64,f::RSQRT2.fmt
"rsqrt2.%s<FMT> f<FD>, f<FS>, f<FT>"
*mips3d:
{
  int fmt = FMT;
  check_fpu (SD_);
  check_u64 (SD_, instruction_0);
  check_fmt_p (SD_, fmt, instruction_0);
  StoreFPR (FD, fmt, RSquareRoot2 (ValueFPR (FS, fmt),
				   ValueFPR (FT, fmt), fmt));
}