aboutsummaryrefslogtreecommitdiff
path: root/sim/mips/sb1.igen
diff options
context:
space:
mode:
Diffstat (limited to 'sim/mips/sb1.igen')
-rw-r--r--sim/mips/sb1.igen244
1 files changed, 0 insertions, 244 deletions
diff --git a/sim/mips/sb1.igen b/sim/mips/sb1.igen
deleted file mode 100644
index b6534cb..0000000
--- a/sim/mips/sb1.igen
+++ /dev/null
@@ -1,244 +0,0 @@
-// -*- C -*-
-
-// Simulator definition for the Broadcom SiByte SB-1 CPU extensions.
-// Copyright (C) 2002 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 2, 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, write to the Free Software Foundation, Inc.,
-// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-
-// Helper:
-//
-// Check that the SB-1 extension instruction can currently be used, and
-// signal a ReservedInstruction exception if not.
-//
-
-:function:::void:check_sbx:instruction_word insn
-*sb1:
-{
- if ((SR & status_SBX) == 0)
- SignalException(ReservedInstruction, insn);
-}
-
-
-// MDMX ASE Instructions
-// ---------------------
-//
-// The SB-1 implements the format OB subset of MDMX
-// and has three additions (pavg, pabsdiff, pabsdifc).
-// In addition, there are a couple of partial-decoding
-// issues for the read/write accumulator instructions.
-//
-// This code is structured so that mdmx.igen can be used by
-// selecting the allowed instructions either via model, or by
-// using check_mdmx_fmtsel and check_mdmx_fmtop to cause an
-// exception if the instruction is not allowed.
-
-
-:function:::void:check_mdmx:instruction_word insn
-*sb1:
-{
- if (!COP_Usable(1))
- SignalExceptionCoProcessorUnusable(1);
- if ((SR & status_MX) == 0)
- SignalExceptionMDMX();
- check_u64 (SD_, insn);
-}
-
-:function:::int:check_mdmx_fmtsel:instruction_word insn, int fmtsel
-*sb1:
-{
- switch (fmtsel & 0x03)
- {
- case 0x00: /* ob */
- case 0x02:
- return 1;
- case 0x01: /* qh */
- case 0x03: /* UNPREDICTABLE */
- SignalException (ReservedInstruction, insn);
- return 0;
- }
- return 0;
-}
-
-:function:::int:check_mdmx_fmtop:instruction_word insn, int fmtop
-*sb1:
-{
- switch (fmtop & 0x01)
- {
- case 0x00: /* ob */
- return 1;
- case 0x01: /* qh */
- SignalException (ReservedInstruction, insn);
- return 0;
- }
- return 0;
-}
-
-
-011110,10,2.X!0,1.FMTOP,00000,00000,5.VD,111111:MDMX:64::RACH.sb1.fmt
-"rach.?<X>.%s<FMTOP> v<VD>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,00,2.X!0,1.FMTOP,00000,00000,5.VD,111111:MDMX:64::RACL.sb1.fmt
-"racl.?<X>.%s<FMTOP> v<VD>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,01,2.X!0,1.FMTOP,00000,00000,5.VD,111111:MDMX:64::RACM.sb1.fmt
-"racm.?<X>.%s<FMTOP> v<VD>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,2.X1!0!1!2,2.X2,1.FMTOP,00000,00000,5.VD,111111:MDMX:64::RAC.sb1.fmt
-"rac?<X1>.?<X2> v<VD>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,10,2.X!0,1.FMTOP,00000,5.VS,00000,111110:MDMX:64::WACH.sb1.fmt
-"wach.?<X>.%s<FMTOP> v<VS>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,00,2.X!0,1.FMTOP,5.VT,5.VS,00000,111110:MDMX:64::WACL.sb1.fmt
-"wacl.?<X>.%s<FMTOP> v<VS>,v<VT>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,2.X1!0!2,2.X2,1.FMTOP,5.VT,5.VS,00000,111110:MDMX:64::WAC.sb1.fmt
-"wacl?<X1>.?<X2>.%s<FMTOP> v<VS>,v<VT>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_mdmx_fmtop (SD_, instruction_0, FMTOP);
- /* No op. */
-}
-
-
-011110,5.FMTSEL,5.VT,5.VS,5.VD,001001:MDMX:64::PABSDIFF.fmt
-"pabsdiff.%s<FMTSEL> v<VD>,v<VS>,v<VT>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_sbx (SD_, instruction_0);
- check_mdmx_fmtsel (SD_, instruction_0, FMTSEL);
- StoreFPR(VD,fmt_mdmx,MX_AbsDiff(ValueFPR(VS,fmt_mdmx),VT,FMTSEL));
-}
-
-
-011110,5.FMTSEL,5.VT,5.VS,00000,110101:MDMX:64::PABSDIFC.fmt
-"pabsdifc.%<FMTSEL> v<VS>,v<VT>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_sbx (SD_, instruction_0);
- check_mdmx_fmtsel (SD_, instruction_0, FMTSEL);
- MX_AbsDiffC(ValueFPR(VS,fmt_mdmx),VT,FMTSEL);
-}
-
-
-011110,5.FMTSEL,5.VT,5.VS,5.VD,001000:MDMX:64::PAVG.fmt
-"pavg.%s<FMTSEL> v<VD>,v<VS>,v<VT>"
-*sb1:
-{
- check_mdmx (SD_, instruction_0);
- check_sbx (SD_, instruction_0);
- check_mdmx_fmtsel (SD_, instruction_0, FMTSEL);
- StoreFPR(VD,fmt_mdmx,MX_Avg(ValueFPR(VS,fmt_mdmx),VT,FMTSEL));
-}
-
-
-// Paired-Single Extension Instructions
-// ------------------------------------
-//
-// The SB-1 implements several .PS format instructions that are
-// extensions to the MIPS64 architecture.
-
-010001,10,3.FMT=6,5.FT,5.FS,5.FD,000011:COP1:32,f::DIV.PS
-"div.%s<FMT> f<FD>, f<FS>, f<FT>"
-*sb1:
-{
- int fmt = FMT;
- check_fpu (SD_);
- check_sbx (SD_, instruction_0);
- StoreFPR (FD, fmt, Divide (ValueFPR (FS, fmt), ValueFPR (FT, fmt), fmt));
-}
-
-
-010001,10,3.FMT=6,00000,5.FS,5.FD,010101:COP1:32,f::RECIP.PS
-"recip.%s<FMT> f<FD>, f<FS>"
-*sb1:
-{
- int fmt = FMT;
- check_fpu (SD_);
- check_sbx (SD_, instruction_0);
- StoreFPR (FD, fmt, Recip (ValueFPR (FS, fmt), fmt));
-}
-
-
-010001,10,3.FMT=6,00000,5.FS,5.FD,010110:COP1:32,f::RSQRT.PS
-"rsqrt.%s<FMT> f<FD>, f<FS>"
-*sb1:
-{
- int fmt = FMT;
- check_fpu (SD_);
- check_sbx (SD_, instruction_0);
- StoreFPR (FD, fmt, RSquareRoot (ValueFPR (FS, fmt), fmt));
-}
-
-
-010001,10,3.FMT=6,00000,5.FS,5.FD,000100:COP1:32,f::SQRT.PS
-"sqrt.%s<FMT> f<FD>, f<FS>"
-*sb1:
-{
- int fmt = FMT;
- check_fpu (SD_);
- check_sbx (SD_, instruction_0);
- StoreFPR (FD, fmt, (SquareRoot (ValueFPR (FS, fmt), fmt)));
-}