| Line 1... |
Line 1... |
//----------------------------------------------------------------------------
|
//----------------------------------------------------------------------------
|
// Copyright (C) 2001 Authors
|
// Copyright (C) 2009 , Olivier Girard
|
//
|
//
|
// This source file may be used and distributed without restriction provided
|
// Redistribution and use in source and binary forms, with or without
|
// that this copyright statement is not removed from the file and that any
|
// modification, are permitted provided that the following conditions
|
// derivative work contains the original copyright notice and the associated
|
// are met:
|
// disclaimer.
|
// * 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 authors nor the names of its contributors
|
|
// may be used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
//
|
//
|
// This source file is free software; you can redistribute it and/or modify
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
// it under the terms of the GNU Lesser General Public License as published
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
// by the Free Software Foundation; either version 2.1 of the License, or
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
// (at your option) any later version.
|
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
//
|
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
// This source is distributed in the hope that it will be useful, but WITHOUT
|
// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
// License for more details.
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
//
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
// You should have received a copy of the GNU Lesser General Public License
|
// THE POSSIBILITY OF SUCH DAMAGE
|
// along with this source; if not, write to the Free Software Foundation,
|
|
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
//
|
//----------------------------------------------------------------------------
|
//----------------------------------------------------------------------------
|
//
|
//
|
// *File Name: omsp_execution_unit.v
|
// *File Name: omsp_execution_unit.v
|
//
|
//
|
| Line 29... |
Line 34... |
//
|
//
|
// *Author(s):
|
// *Author(s):
|
// - Olivier Girard, olgirard@gmail.com
|
// - Olivier Girard, olgirard@gmail.com
|
//
|
//
|
//----------------------------------------------------------------------------
|
//----------------------------------------------------------------------------
|
// $Rev: 103 $
|
// $Rev: 117 $
|
// $LastChangedBy: olivier.girard $
|
// $LastChangedBy: olivier.girard $
|
// $LastChangedDate: 2011-03-05 15:44:48 +0100 (Sat, 05 Mar 2011) $
|
// $LastChangedDate: 2011-06-23 21:30:51 +0200 (Thu, 23 Jun 2011) $
|
//----------------------------------------------------------------------------
|
//----------------------------------------------------------------------------
|
`ifdef OMSP_NO_INCLUDE
|
`ifdef OMSP_NO_INCLUDE
|
`else
|
`else
|
`include "openMSP430_defines.v"
|
`include "openMSP430_defines.v"
|
`endif
|
`endif
|
| Line 147... |
Line 152... |
(inst_type[`INST_TO] & inst_ad[`DIR] & ~inst_alu[`EXEC_NO_WR]) |
|
(inst_type[`INST_TO] & inst_ad[`DIR] & ~inst_alu[`EXEC_NO_WR]) |
|
(inst_type[`INST_SO] & inst_as[`DIR] & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_so[`RETI])) |
|
(inst_type[`INST_SO] & inst_as[`DIR] & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_so[`RETI])) |
|
inst_type[`INST_JMP])) | dbg_reg_wr;
|
inst_type[`INST_JMP])) | dbg_reg_wr;
|
|
|
wire reg_sp_wr = (((e_state==`E_IRQ_1) | (e_state==`E_IRQ_3)) & ~inst_irq_rst) |
|
wire reg_sp_wr = (((e_state==`E_IRQ_1) | (e_state==`E_IRQ_3)) & ~inst_irq_rst) |
|
((e_state==`E_DST_RD) & ((inst_so[`PUSH] & ~inst_as[`IDX] &
|
((e_state==`E_DST_RD) & ((inst_so[`PUSH] | inst_so[`CALL]) & ~inst_as[`IDX] & ~((inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1]))) |
|
~((inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1])) |
|
((e_state==`E_SRC_AD) & ((inst_so[`PUSH] | inst_so[`CALL]) & inst_as[`IDX])) |
|
inst_so[`CALL])) |
|
((e_state==`E_SRC_RD) & ((inst_so[`PUSH] | inst_so[`CALL]) & ((inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1])));
|
((e_state==`E_SRC_AD) & (inst_so[`PUSH] & inst_as[`IDX])) |
|
|
((e_state==`E_SRC_RD) & (inst_so[`PUSH] & ((inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1])));
|
|
|
|
wire reg_sr_wr = (e_state==`E_DST_RD) & inst_so[`RETI];
|
wire reg_sr_wr = (e_state==`E_DST_RD) & inst_so[`RETI];
|
|
|
wire reg_sr_clr = (e_state==`E_IRQ_2);
|
wire reg_sr_clr = (e_state==`E_IRQ_2);
|
|
|
| Line 221... |
Line 224... |
((e_state==`E_EXEC) & inst_as[`DIR] & ~inst_type[`INST_JMP]);
|
((e_state==`E_EXEC) & inst_as[`DIR] & ~inst_type[`INST_JMP]);
|
|
|
wire src_reg_dest_sel = (e_state==`E_IRQ_1) |
|
wire src_reg_dest_sel = (e_state==`E_IRQ_1) |
|
(e_state==`E_IRQ_3) |
|
(e_state==`E_IRQ_3) |
|
((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL])) |
|
((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL])) |
|
((e_state==`E_SRC_AD) & inst_so[`PUSH] & inst_as[`IDX]);
|
((e_state==`E_SRC_AD) & (inst_so[`PUSH] | inst_so[`CALL]) & inst_as[`IDX]);
|
|
|
wire src_mdb_in_val_sel = ((e_state==`E_DST_RD) & inst_so[`RETI]) |
|
wire src_mdb_in_val_sel = ((e_state==`E_DST_RD) & inst_so[`RETI]) |
|
((e_state==`E_EXEC) & (inst_as[`INDIR] | inst_as[`INDIR_I] |
|
((e_state==`E_EXEC) & (inst_as[`INDIR] | inst_as[`INDIR_I] |
|
inst_as[`IDX] | inst_as[`SYMB] |
|
inst_as[`IDX] | inst_as[`SYMB] |
|
inst_as[`ABS]));
|
inst_as[`ABS]));
|
| Line 265... |
Line 268... |
|
|
wire dst_fffe_sel = (e_state==`E_IRQ_0) |
|
wire dst_fffe_sel = (e_state==`E_IRQ_0) |
|
(e_state==`E_IRQ_1) |
|
(e_state==`E_IRQ_1) |
|
(e_state==`E_IRQ_3) |
|
(e_state==`E_IRQ_3) |
|
((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL]) & ~inst_so[`RETI]) |
|
((e_state==`E_DST_RD) & (inst_so[`PUSH] | inst_so[`CALL]) & ~inst_so[`RETI]) |
|
((e_state==`E_SRC_AD) & inst_so[`PUSH] & inst_as[`IDX]) |
|
((e_state==`E_SRC_AD) & (inst_so[`PUSH] | inst_so[`CALL]) & inst_as[`IDX]) |
|
((e_state==`E_SRC_RD) & inst_so[`PUSH] & (inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1]);
|
((e_state==`E_SRC_RD) & (inst_so[`PUSH] | inst_so[`CALL]) & (inst_as[`INDIR] | inst_as[`INDIR_I]) & inst_src[1]);
|
|
|
wire dst_reg_dest_sel = ((e_state==`E_DST_RD) & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_ad[`ABS] | inst_so[`RETI])) |
|
wire dst_reg_dest_sel = ((e_state==`E_DST_RD) & ~(inst_so[`PUSH] | inst_so[`CALL] | inst_ad[`ABS] | inst_so[`RETI])) |
|
((e_state==`E_DST_WR) & ~inst_ad[`ABS]) |
|
((e_state==`E_DST_WR) & ~inst_ad[`ABS]) |
|
((e_state==`E_EXEC) & (inst_ad[`DIR] | inst_type[`INST_JMP] |
|
((e_state==`E_EXEC) & (inst_ad[`DIR] | inst_type[`INST_JMP] |
|
inst_type[`INST_SO]) & ~inst_so[`RETI]);
|
inst_type[`INST_SO]) & ~inst_so[`RETI]);
|
