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[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [src/] [OrpsocAccess.cpp] - Blame information for rev 751

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// ----------------------------------------------------------------------------
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// Access functions for the ORPSoC Verilator model: implementation
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// Copyright (C) 2008  Embecosm Limited <info@embecosm.com>
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// Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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// Contributor Julius Baxter <jb@orsoc.se>
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// This file is part of the cycle accurate model of the OpenRISC 1000 based
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// system-on-chip, ORPSoC, built using Verilator.
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// This program is free software: you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or (at your
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// option) any later version.
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
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// License for more details.
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program.  If not, see <http://www.gnu.org/licenses/>.
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// ----------------------------------------------------------------------------
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// $Id: OrpsocAccess.cpp 303 2009-02-16 11:20:17Z jeremy $
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#include "OrpsocAccess.h"
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#include "Vorpsoc_top.h"
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#include "Vorpsoc_top_orpsoc_top.h"
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#include "Vorpsoc_top_or1200_top.h"
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#include "Vorpsoc_top_or1200_cpu.h"
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#include "Vorpsoc_top_or1200_ctrl.h"
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#include "Vorpsoc_top_or1200_except.h"
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#include "Vorpsoc_top_or1200_sprs.h"
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#include "Vorpsoc_top_or1200_rf.h"
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#include "Vorpsoc_top_or1200_dpram.h"
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// Need RAM instantiation has parameters after module name
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// Include for ram_wb
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#include "Vorpsoc_top_ram_wb__A20_D20_M800000_MB17.h"
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// Include for ram_wb_b3
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#include "Vorpsoc_top_ram_wb_b3__pi3.h"
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//! Constructor for the ORPSoC access class
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//! Initializes the pointers to the various module instances of interest
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//! within the Verilator model.
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//! @param[in] orpsoc  The SystemC Verilated ORPSoC instance
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OrpsocAccess::OrpsocAccess(Vorpsoc_top * orpsoc_top)
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{
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        // Assign processor accessor objects
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        or1200_ctrl = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_ctrl;
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        or1200_except = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_except;
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        or1200_sprs = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_sprs;
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        rf_a = orpsoc_top->v->or1200_top0->or1200_cpu->or1200_rf->rf_a;
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        // Assign main memory accessor objects
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        // For old ram_wb: ram_wb_sc_sw = orpsoc_top->v->ram_wb0->ram0;
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        //ram_wb_sc_sw = orpsoc_top->v->wb_ram_b3_0;
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        wishbone_ram = orpsoc_top->v->ram_wb0->ram_wb_b3_0;
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        // Assign arbiter accessor object
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        //wb_arbiter = orpsoc_top->v->wb_conbus;
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}                               // OrpsocAccess ()
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//! Access for the ex_freeze signal
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//! @return  The value of the or1200_ctrl.ex_freeze signal
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bool OrpsocAccess::getExFreeze()
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{
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        return or1200_ctrl->ex_freeze;
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}                               // getExFreeze ()
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//! Access for the wb_freeze signal
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//! @return  The value of the or1200_ctrl.wb_freeze signal
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bool OrpsocAccess::getWbFreeze()
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{
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        return or1200_ctrl->wb_freeze;
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}                               // getWbFreeze ()
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//! Access for the except_flushpipe signal
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//! @return  The value of the or1200_except.except_flushpipe signal
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bool OrpsocAccess::getExceptFlushpipe()
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{
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        return or1200_except->except_flushpipe;
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}                               // getExceptFlushpipe ()
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//! Access for the ex_dslot signal
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//! @return  The value of the or1200_except.ex_dslot signalfac
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bool OrpsocAccess::getExDslot()
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{
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        return or1200_except->ex_dslot;
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}                               // getExDslot ()
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//! Access for the except_type value
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//! @return  The value of the or1200_except.except_type register
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uint32_t OrpsocAccess::getExceptType()
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{
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        return (or1200_except->get_except_type) ();
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}                               // getExceptType ()
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//! Access for the id_pc register
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//! @return  The value of the or1200_except.id_pc register
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uint32_t OrpsocAccess::getIdPC()
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{
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        return (or1200_except->get_id_pc) ();
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}                               // getIdPC ()
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//! Access for the ex_pc register
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//! @return  The value of the or1200_except.id_ex register
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uint32_t OrpsocAccess::getExPC()
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{
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        return (or1200_except->get_ex_pc) ();
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}                               // getExPC ()
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//! Access for the wb_pc register
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//! @return  The value of the or1200_except.wb_pc register
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uint32_t OrpsocAccess::getWbPC()
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{
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        return (or1200_except->get_wb_pc) ();
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}                               // getWbPC ()
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//! Access for the id_insn register
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//! @return  The value of the or1200_ctrl.wb_insn register
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uint32_t OrpsocAccess::getIdInsn()
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{
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        return (or1200_ctrl->get_id_insn) ();
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}                               // getIdInsn ()
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//! Access for the ex_insn register
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//! @return  The value of the or1200_ctrl.ex_insn register
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uint32_t OrpsocAccess::getExInsn()
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{
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        return (or1200_ctrl->get_ex_insn) ();
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}                               // getExInsn ()
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//! Access for the wb_insn register
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//! @return  The value of the or1200_ctrl.wb_insn register
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uint32_t OrpsocAccess::getWbInsn()
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{
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        return (or1200_ctrl->get_wb_insn) ();
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}                               // getWbInsn ()
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//! Access the Wishbone SRAM memory
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//! @return  The value of the 32-bit memory word at addr
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uint32_t OrpsocAccess::get_mem32(uint32_t addr)
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{
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        return (wishbone_ram->get_mem32) (addr / 4);
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}                               // get_mem32 ()
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//! Access a byte from the Wishbone SRAM memory
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//! @return  The value of the memory byte at addr
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uint8_t OrpsocAccess::get_mem8(uint32_t addr)
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{
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        uint32_t word;
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        static uint32_t cached_word;
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        static uint32_t cached_word_addr = 0xffffffff;
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        int sel = addr & 0x3;   // Remember which byte we want
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        addr = addr / 4;
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        if (addr != cached_word_addr) {
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                cached_word_addr = addr;
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                // Convert address to word number here
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                word = (wishbone_ram->get_mem8) (addr);
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                cached_word = word;
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        } else
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                word = cached_word;
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        switch (sel) {
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                /* Big endian word expected */
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        case 0:
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                return ((word >> 24) & 0xff);
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                break;
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        case 1:
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                return ((word >> 16) & 0xff);
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                break;
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        case 2:
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                return ((word >> 8) & 0xff);
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                break;
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        case 3:
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                return ((word >> 0) & 0xff);
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                break;
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        default:
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                return 0;
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        }
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}                               // get_mem8 ()
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//! Write value to the Wishbone SRAM memory
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void OrpsocAccess::set_mem32(uint32_t addr, uint32_t data)
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{
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        (wishbone_ram->set_mem32) (addr / 4, data);
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}                               // set_mem32 ()
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//! Trigger the $readmemh() system call
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void OrpsocAccess::do_ram_readmemh(void)
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{
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        (wishbone_ram->do_readmemh) ();
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}                               // do_ram_readmemh ()
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//! Access for the OR1200 GPRs
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//! These are extracted from memory using the Verilog function
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//! @param[in] regNum  The GPR whose value is wanted
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//! @return            The value of the GPR
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uint32_t OrpsocAccess::getGpr(uint32_t regNum)
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{
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        return (rf_a->get_gpr) (regNum);
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}                               // getGpr ()
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//! Access for the OR1200 GPRs
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//! These are extracted from memory using the Verilog function
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//! @param[in] regNum  The GPR whose value is wanted
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//! @param[in] value   The value of GPR to write
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void OrpsocAccess::setGpr(uint32_t regNum, uint32_t value)
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{
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        (rf_a->set_gpr) (regNum, value);
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}                               // getGpr ()
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//! Access for the sr register
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//! @return  The value of the or1200_sprs.sr register
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uint32_t OrpsocAccess::getSprSr()
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{
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        return (or1200_sprs->get_sr) ();
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}                               // getSprSr ()
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//! Access for the epcr register
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//! @return  The value of the or1200_sprs.epcr register
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uint32_t OrpsocAccess::getSprEpcr()
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{
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        return (or1200_sprs->get_epcr) ();
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}                               // getSprEpcr ()
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//! Access for the eear register
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//! @return  The value of the or1200_sprs.eear register
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uint32_t OrpsocAccess::getSprEear()
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{
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        return (or1200_sprs->get_eear) ();
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}                               // getSprEear ()
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//! Access for the esr register
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//! @return  The value of the or1200_sprs.esr register
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uint32_t OrpsocAccess::getSprEsr()
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{
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        return (or1200_sprs->get_esr) ();
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}                               // getSprEsr ()
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/*
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//! Access for the arbiter's grant signal
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//! @return  The value of the wb_conmax_top.arb signal
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uint8_t
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OrpsocAccess::getWbArbGrant ()
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{
322
  return  (wb_arbiter->get_gnt) ();
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}       // getWbArbGrant ()
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//! Arbiter master[mast_num] access functions
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//! Access for the arbiter's master[mast_num] data in signal
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//! @return  The value of the wb_conmax_top.m_dat_i[mast_num]
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uint32_t
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OrpsocAccess::getWbArbMastDatI (uint32_t mast_num)
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{
335
  return  (wb_arbiter->get_m_dat_i) (mast_num);
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}       // getWbArbMastDatI ()
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//! Access for the arbiter's master[mast_num] data out signal
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//! @return  The value of the wb_conmax_top.m_dat_o[mast_num]
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343
uint32_t
344
OrpsocAccess::getWbArbMastDatO (uint32_t mast_num)
345
{
346
  return  (wb_arbiter->get_m_dat_o) (mast_num);
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}       // getWbArbMastDatO ()
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//! Access for the arbiter's master[mast_num] data out
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352
//! @return  The value of the wb_conmax_top.m_adr_i[mast_num]
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354
uint32_t
355
OrpsocAccess::getWbArbMastAdrI (uint32_t mast_num)
356
{
357
  return  (wb_arbiter->get_m_adr_i) (mast_num);
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359
}       // getWbArbMastAdrI ()
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//! Access for the arbiter's master[mast_num] select signal
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363
//! @return  The value of the wb_conmax_top.m_sel_i[mast_num]
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uint8_t
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OrpsocAccess::getWbArbMastSelI (uint32_t mast_num)
367
{
368
  return  (wb_arbiter->get_m_sel_i) (mast_num);
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370
}       // getWbArbMastSelI ()
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//! Access for the arbiter's master[mast_num] decoded slave select signal
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//! @return  The value of the wb_conmax_top.m_ssel_dec[mast_num]
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OrpsocAccess::getWbArbMastSlaveSelDecoded (uint32_t mast_num)
378
{
379
  return  (wb_arbiter->get_m_ssel_dec) (mast_num);
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381
}       // getWbArbMastSlaveSelDecoded ()
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//! Access for the arbiter's master[mast_num] write enable signal
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//! @return  The value of the wb_conmax_top.m_we_i[mast_num]
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bool
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OrpsocAccess::getWbArbMastWeI (uint32_t mast_num)
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{
390
  return  (wb_arbiter->get_m_we_i) (mast_num);
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}       // getWbArbMastWeI ()
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//! Access for the arbiter's master[mast_num] cycle input signal
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//! @return  The value of the wb_conmax_top.m_cyc_i[mast_num]
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398
bool
399
OrpsocAccess::getWbArbMastCycI (uint32_t mast_num)
400
{
401
  return  (wb_arbiter->get_m_cyc_i) (mast_num);
402
 
403
}       // getWbArbMastCycI ()
404
 
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//! Access for the arbiter's master[mast_num] strobe input signal
406
 
407
//! @return  The value of the wb_conmax_top.m_stb_i[mast_num]
408
 
409
bool
410
OrpsocAccess::getWbArbMastStbI (uint32_t mast_num)
411
{
412
  return  (wb_arbiter->get_m_stb_i) (mast_num);
413
 
414
}       // getWbArbMastStbI ()
415
 
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//! Access for the arbiter's master[mast_num] ACK output signal
417
 
418
//! @return  The value of the wb_conmax_top.m_ack_o[mast_num]
419
 
420
bool
421
OrpsocAccess::getWbArbMastAckO (uint32_t mast_num)
422
{
423
  return  (wb_arbiter->get_m_ack_o) (mast_num);
424
 
425
}       // getWbArbMastAckO ()
426
 
427
//! Access for the arbiter's master[mast_num] error input signal
428
 
429
//! @return  The value of the wb_conmax_top.m_err_o[mast_num]
430
 
431
bool
432
OrpsocAccess::getWbArbMastErrO (uint32_t mast_num)
433
{
434
  return  (wb_arbiter->get_m_err_o) (mast_num);
435
 
436
}       // getWbArbMastErrO ()
437
 
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*/

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