mirror of
https://github.com/verilator/verilator.git
synced 2026-09-06 08:57:23 +02:00
Geza Lore
c99aa8ede5
Change WDataInP/WDataOutP to be opaque handles types instead of aliases to raw pointers. This subsequently eliminates needing an implicit cast operator in VlWide, which is replaced with implicit constructors of WDataInP/WDataOutP that can create a handle from a VlWide. This eliminates some unsafe conversions that the previous implicit cast operator unintentionally enabled (e.g. #7618). It also eliminates having to insert ".data()" in various places int he generated code, which simplifies internals (the only place ".data()" should be needed is in calls to variadic functions where the expected type of the argument is not WDataInP/WDataOutP). The handles otherwise behave like pointers, implementing the minimal amount of operators required to code the runtime. The handle is still only a single pointer, and will be passed in registers as before, so this patch should be performance neutral. As part of this removed WData, which used to be an alias for EData. All uses are now either EData*, WDataInP, WDataOutP, or VlWide directly.
113 lines
4.4 KiB
C++
113 lines
4.4 KiB
C++
// -*- mode: C++; c-file-style: "cc-mode" -*-
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//*************************************************************************
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//
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// Code available from: https://verilator.org
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//
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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 either the GNU Lesser General Public License Version 3
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// or the Perl Artistic License Version 2.0.
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// SPDX-FileCopyrightText: 2003-2026 Wilson Snyder
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// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
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//
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//*************************************************************************
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///
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/// \file
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/// \brief Verilated DPI header
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///
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/// This file is included automatically by Verilator at the top of all C++
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/// files it generates where DPI is used. It contains DPI interface
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/// functions required by the Verilated code.
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///
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/// This file is not part of the Verilated public-facing API.
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/// It is only for internal use.
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///
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//*************************************************************************
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#ifndef VERILATOR_VERILATED_DPI_H_
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#define VERILATOR_VERILATED_DPI_H_
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#include "verilatedos.h"
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#include "verilated.h" // Also presumably included by caller
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#include "verilated_sym_props.h"
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#include "svdpi.h"
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//===================================================================
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// SETTING OPERATORS
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// Convert svBitVecVal to Verilator internal data
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static inline void VL_SET_W_SVBV(int obits, WDataOutP owp, const svBitVecVal* lwp) VL_MT_SAFE {
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const int words = VL_WORDS_I(obits);
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for (int i = 0; i < words - 1; ++i) owp[i] = lwp[i];
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owp[words - 1] = lwp[words - 1] & VL_MASK_I(obits);
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}
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static inline void VL_SET_Q_SVBV(int obits, QData& out, const svBitVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_Q(obits) & VL_SET_QII(lwp[1], lwp[0]);
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}
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static inline void VL_SET_I_SVBV(int obits, IData& out, const svBitVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_I(obits) & lwp[0];
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}
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static inline void VL_SET_S_SVBV(int obits, SData& out, const svBitVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_I(obits) & lwp[0];
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}
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static inline void VL_SET_C_SVBV(int obits, CData& out, const svBitVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_I(obits) & lwp[0];
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}
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// Convert Verilator internal data to svBitVecVal
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static inline void VL_SET_SVBV_W(int obits, svBitVecVal* owp, const WDataInP lwp) VL_MT_SAFE {
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const int words = VL_WORDS_I(obits);
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for (int i = 0; i < words - 1; ++i) owp[i] = lwp[i];
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owp[words - 1] = lwp[words - 1] & VL_MASK_I(obits);
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}
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static inline void VL_SET_SVBV_I(int, svBitVecVal* owp, const IData ld) VL_MT_SAFE { owp[0] = ld; }
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static inline void VL_SET_SVBV_Q(int, svBitVecVal* owp, const QData ld) VL_MT_SAFE {
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VL_SET_WQ(WDataOutP::external(owp), ld);
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}
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// Convert svLogicVecVal to Verilator internal data
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// Note these functions ignore X/Z in svLogicVecVal
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static inline void VL_SET_W_SVLV(int obits, WDataOutP owp, const svLogicVecVal* lwp) VL_MT_SAFE {
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const int words = VL_WORDS_I(obits);
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for (int i = 0; i < words - 1; ++i) owp[i] = lwp[i].aval;
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owp[words - 1] = lwp[words - 1].aval & VL_MASK_I(obits);
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}
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static inline void VL_SET_Q_SVLV(int obits, QData& out, const svLogicVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_Q(obits) & VL_SET_QII(lwp[1].aval, lwp[0].aval);
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}
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static inline void VL_SET_I_SVLV(int obits, IData& out, const svLogicVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_I(obits) & lwp[0].aval;
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}
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static inline void VL_SET_S_SVLV(int obits, SData& out, const svLogicVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_I(obits) & lwp[0].aval;
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}
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static inline void VL_SET_C_SVLV(int obits, CData& out, const svLogicVecVal* lwp) VL_MT_SAFE {
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out = VL_MASK_I(obits) & lwp[0].aval;
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}
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// Convert Verilator internal data to svLogicVecVal
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// Note these functions never create X/Z in svLogicVecVal
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static inline void VL_SET_SVLV_W(int obits, svLogicVecVal* owp, const WDataInP lwp) VL_MT_SAFE {
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const int words = VL_WORDS_I(obits);
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for (int i = 0; i < words; ++i) owp[i].bval = 0;
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for (int i = 0; i < words - 1; ++i) owp[i].aval = lwp[i];
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owp[words - 1].aval = lwp[words - 1] & VL_MASK_I(obits);
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}
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static inline void VL_SET_SVLV_I(int, svLogicVecVal* owp, const IData ld) VL_MT_SAFE {
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owp[0].aval = ld;
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owp[0].bval = 0;
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}
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static inline void VL_SET_SVLV_Q(int, svLogicVecVal* owp, const QData ld) VL_MT_SAFE {
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VlWide<2> lwp;
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VL_SET_WQ(lwp, ld);
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owp[0].aval = lwp[0];
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owp[0].bval = 0;
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owp[1].aval = lwp[1];
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owp[1].bval = 0;
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}
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//======================================================================
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#endif // Guard
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