/******************************************************************************* * Copyright (C) 2017, 2018 MINRES Technologies GmbH * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * 2. 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. * * 3. Neither the name of the copyright holder nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * *******************************************************************************/ #ifndef _RV32IMAC_H_ #define _RV32IMAC_H_ #include #include #include #include namespace iss { namespace arch { struct rv32imac; template <> struct traits { constexpr static char const *const core_type = "RV32IMAC"; enum constants { XLEN = 32, PCLEN = 32, MISA_VAL = 0b1000000000101000001000100000101, PGSIZE = 0x1000, PGMASK = 0xfff }; constexpr static unsigned FP_REGS_SIZE = 0; enum reg_e { X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19, X20, X21, X22, X23, X24, X25, X26, X27, X28, X29, X30, X31, PC, NUM_REGS, NEXT_PC = NUM_REGS, TRAP_STATE, PENDING_TRAP, MACHINE_STATE, LAST_BRANCH, ICOUNT }; using reg_t = uint32_t; using addr_t = uint32_t; using code_word_t = uint32_t; // TODO: check removal using virt_addr_t = iss::typed_addr_t; using phys_addr_t = iss::typed_addr_t; static constexpr std::array RV32IMAC_reg_size{ {32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 64}}; constexpr static unsigned reg_bit_width(unsigned r) { return RV32IMAC_reg_size[r]; } static constexpr std::array RV32IMAC_reg_byte_offset{ {0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 148, 152, 160}}; constexpr static unsigned reg_byte_offset(unsigned r) { return RV32IMAC_reg_byte_offset[r]; } static const uint64_t addr_mask = (reg_t(1) << (XLEN - 1)) | ((reg_t(1) << (XLEN - 1)) - 1); enum sreg_flag_e { FLAGS }; enum mem_type_e { MEM, CSR, FENCE, RES }; }; struct rv32imac : public arch_if { using virt_addr_t = typename traits::virt_addr_t; using phys_addr_t = typename traits::phys_addr_t; using reg_t = typename traits::reg_t; using addr_t = typename traits::addr_t; rv32imac(); ~rv32imac(); void reset(uint64_t address = 0) override; uint8_t *get_regs_base_ptr() override; /// deprecated void get_reg(short idx, std::vector &value) override {} void set_reg(short idx, const std::vector &value) override {} /// deprecated bool get_flag(int flag) override { return false; } void set_flag(int, bool value) override{}; /// deprecated void update_flags(operations op, uint64_t opr1, uint64_t opr2) override{}; inline uint64_t get_icount() { return reg.icount; } inline bool should_stop() { return interrupt_sim; } inline phys_addr_t v2p(const iss::addr_t &addr) { if (addr.space != traits::MEM || addr.type == iss::address_type::PHYSICAL || addr_mode[static_cast(addr.access) & 0x3] == address_type::PHYSICAL) { return phys_addr_t(addr.access, addr.space, addr.val & traits::addr_mask); } else return virt2phys(addr); } virtual phys_addr_t virt2phys(const iss::addr_t &addr); virtual iss::sync_type needed_sync() const { return iss::NO_SYNC; } inline uint32_t get_last_branch() { return reg.last_branch; } protected: struct RV32IMAC_regs { uint32_t X0 = 0; uint32_t X1 = 0; uint32_t X2 = 0; uint32_t X3 = 0; uint32_t X4 = 0; uint32_t X5 = 0; uint32_t X6 = 0; uint32_t X7 = 0; uint32_t X8 = 0; uint32_t X9 = 0; uint32_t X10 = 0; uint32_t X11 = 0; uint32_t X12 = 0; uint32_t X13 = 0; uint32_t X14 = 0; uint32_t X15 = 0; uint32_t X16 = 0; uint32_t X17 = 0; uint32_t X18 = 0; uint32_t X19 = 0; uint32_t X20 = 0; uint32_t X21 = 0; uint32_t X22 = 0; uint32_t X23 = 0; uint32_t X24 = 0; uint32_t X25 = 0; uint32_t X26 = 0; uint32_t X27 = 0; uint32_t X28 = 0; uint32_t X29 = 0; uint32_t X30 = 0; uint32_t X31 = 0; uint32_t PC = 0; uint32_t NEXT_PC = 0; uint32_t trap_state = 0, pending_trap = 0, machine_state = 0, last_branch = 0; uint64_t icount = 0; } reg; std::array addr_mode; bool interrupt_sim = false; uint32_t get_fcsr() { return 0; } void set_fcsr(uint32_t val) {} }; } } #endif /* _RV32IMAC_H_ */