Merge branch 'feature/interpreter' into develop

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 3.12)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) # main (top) cmake dir
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake) # project specific cmake dir
 
@@ -50,11 +50,13 @@ set(LIB_SOURCES
 	#src/iss/rv64gc.cpp
 	src/iss/mnrv32.cpp
 	src/vm/llvm/fp_functions.cpp
+	src/vm/llvm/vm_mnrv32.cpp
 	#src/vm/llvm/vm_rv32gc.cpp
-	src/vm/llvm/vm_rv32imac.cpp
+	#src/vm/llvm/vm_rv32imac.cpp
 	#src/vm/llvm/vm_rv64i.cpp
 	#src/vm/llvm/vm_rv64gc.cpp
 	src/vm/tcc/vm_mnrv32.cpp
+	src/vm/interp/vm_mnrv32.cpp
     src/plugin/instruction_count.cpp
     src/plugin/cycle_estimate.cpp)
 
@@ -64,7 +66,7 @@ set(LIBRARY_NAME riscv)
 # Define the library
 add_library(${LIBRARY_NAME} ${LIB_SOURCES})
 SET(${LIBRARY_NAME} -Wl,-whole-archive -l${LIBRARY_NAME} -Wl,-no-whole-archive)
-target_link_libraries(${LIBRARY_NAME} softfloat dbt-core tinycc scc-util)
+target_link_libraries(${LIBRARY_NAME} softfloat dbt-core scc-util)
 set_target_properties(${LIBRARY_NAME} PROPERTIES
   VERSION ${VERSION}  # ${VERSION} was defined in the main CMakeLists.
   FRAMEWORK FALSE

gen_input/RVC.core_desc

@@ -164,7 +164,7 @@ InsructionSet RV32IC extends RISCVBase{
             val offs[XLEN] <= X[2] + uimm;
             MEM[offs]{32} <= X[rs2];
         }
-        DII {
+        DII(no_cont) { // Defined Illegal Instruction
             encoding:b000 | b0 | b00000 | b00000 | b00;
             raise(0, 2);
         }

gen_input/minres_rv.core_desc

@@ -6,7 +6,7 @@ import "RVC.core_desc"
 import "RVF.core_desc"
 import "RVD.core_desc"
 
-Core MNRV32 provides RV32I/*, RV32IC */ {
+Core MNRV32 provides RV32I, RV32IC {
     constants {
         XLEN:=32;
         PCLEN:=32;
@@ -17,7 +17,7 @@ Core MNRV32 provides RV32I/*, RV32IC */ {
         PGMASK := 0xfff; //PGSIZE-1
     }
 }
-
+/*
 Core RV32IMAC provides RV32I, RV32M, RV32A, RV32IC {
     constants {
         XLEN:=32;
@@ -67,4 +67,4 @@ Core RV64GC provides RV64I, RV64M, RV64A, RV64F, RV64D, RV64IC, RV32FC, RV32DC {
         PGMASK := 0xfff; //PGSIZE-1
     }
 }
-
+*/

gen_input/templates/interp/vm-vm_CORENAME.cpp.gtl

@@ -0,0 +1,246 @@
+/*******************************************************************************
+ * Copyright (C) 2020 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.
+ *
+ *******************************************************************************/
+
+#include <iss/arch/${coreDef.name.toLowerCase()}.h>
+#include <iss/arch/riscv_hart_msu_vp.h>
+#include <iss/debugger/gdb_session.h>
+#include <iss/debugger/server.h>
+#include <iss/iss.h>
+#include <iss/interp/vm_base.h>
+#include <util/logging.h>
+#include <sstream>
+
+#ifndef FMT_HEADER_ONLY
+#define FMT_HEADER_ONLY
+#endif
+#include <fmt/format.h>
+
+#include <array>
+#include <iss/debugger/riscv_target_adapter.h>
+
+namespace iss {
+namespace interp {
+namespace ${coreDef.name.toLowerCase()} {
+using namespace iss::arch;
+using namespace iss::debugger;
+
+template <typename ARCH> class vm_impl : public iss::interp::vm_base<ARCH> {
+public:
+    using super = typename iss::interp::vm_base<ARCH>;
+    using virt_addr_t = typename super::virt_addr_t;
+    using phys_addr_t = typename super::phys_addr_t;
+    using code_word_t = typename super::code_word_t;
+    using addr_t = typename super::addr_t;
+    using reg_t = typename traits<ARCH>::reg_t;
+    using iss::interp::vm_base<ARCH>::get_reg;
+
+    vm_impl();
+
+    vm_impl(ARCH &core, unsigned core_id = 0, unsigned cluster_id = 0);
+
+    void enableDebug(bool enable) { super::sync_exec = super::ALL_SYNC; }
+
+    target_adapter_if *accquire_target_adapter(server_if *srv) override {
+        debugger_if::dbg_enabled = true;
+        if (super::tgt_adapter == nullptr)
+            super::tgt_adapter = new riscv_target_adapter<ARCH>(srv, this->get_arch());
+        return super::tgt_adapter;
+    }
+
+protected:
+    using this_class = vm_impl<ARCH>;
+    using compile_ret_t = virt_addr_t;
+    using compile_func = compile_ret_t (this_class::*)(virt_addr_t &pc, code_word_t instr);
+
+    inline const char *name(size_t index){return traits<ARCH>::reg_aliases.at(index);}
+
+    virt_addr_t execute_inst(virt_addr_t start, std::function<bool(void)> pred) override;
+
+    // some compile time constants
+    // enum { MASK16 = 0b1111110001100011, MASK32 = 0b11111111111100000111000001111111 };
+    enum { MASK16 = 0b1111111111111111, MASK32 = 0b11111111111100000111000001111111 };
+    enum { EXTR_MASK16 = MASK16 >> 2, EXTR_MASK32 = MASK32 >> 2 };
+    enum { LUT_SIZE = 1 << util::bit_count(EXTR_MASK32), LUT_SIZE_C = 1 << util::bit_count(EXTR_MASK16) };
+
+    std::array<compile_func, LUT_SIZE> lut;
+
+    std::array<compile_func, LUT_SIZE_C> lut_00, lut_01, lut_10;
+    std::array<compile_func, LUT_SIZE> lut_11;
+
+    std::array<compile_func *, 4> qlut;
+
+    std::array<const uint32_t, 4> lutmasks = {{EXTR_MASK16, EXTR_MASK16, EXTR_MASK16, EXTR_MASK32}};
+
+    void expand_bit_mask(int pos, uint32_t mask, uint32_t value, uint32_t valid, uint32_t idx, compile_func lut[],
+                         compile_func f) {
+        if (pos < 0) {
+            lut[idx] = f;
+        } else {
+            auto bitmask = 1UL << pos;
+            if ((mask & bitmask) == 0) {
+                expand_bit_mask(pos - 1, mask, value, valid, idx, lut, f);
+            } else {
+                if ((valid & bitmask) == 0) {
+                    expand_bit_mask(pos - 1, mask, value, valid, (idx << 1), lut, f);
+                    expand_bit_mask(pos - 1, mask, value, valid, (idx << 1) + 1, lut, f);
+                } else {
+                    auto new_val = idx << 1;
+                    if ((value & bitmask) != 0) new_val++;
+                    expand_bit_mask(pos - 1, mask, value, valid, new_val, lut, f);
+                }
+            }
+        }
+    }
+
+    inline uint32_t extract_fields(uint32_t val) { return extract_fields(29, val >> 2, lutmasks[val & 0x3], 0); }
+
+    uint32_t extract_fields(int pos, uint32_t val, uint32_t mask, uint32_t lut_val) {
+        if (pos >= 0) {
+            auto bitmask = 1UL << pos;
+            if ((mask & bitmask) == 0) {
+                lut_val = extract_fields(pos - 1, val, mask, lut_val);
+            } else {
+                auto new_val = lut_val << 1;
+                if ((val & bitmask) != 0) new_val++;
+                lut_val = extract_fields(pos - 1, val, mask, new_val);
+            }
+        }
+        return lut_val;
+    }
+
+    void raise_trap(uint16_t trap_id, uint16_t cause){
+        auto trap_val =  0x80ULL << 24 | (cause << 16) | trap_id;
+        this->template get_reg<uint32_t>(arch::traits<ARCH>::TRAP_STATE) = trap_val;
+        this->template get_reg<uint32_t>(arch::traits<ARCH>::NEXT_PC) = std::numeric_limits<uint32_t>::max();
+    }
+
+    void leave_trap(unsigned lvl){
+        this->core.leave_trap(lvl);
+        auto pc_val = super::template read_mem<reg_t>(traits<ARCH>::CSR, (lvl << 8) + 0x41);
+        this->template get_reg<reg_t>(arch::traits<ARCH>::NEXT_PC) = pc_val;
+        this->template get_reg<uint32_t>(arch::traits<ARCH>::LAST_BRANCH) = std::numeric_limits<uint32_t>::max();
+    }
+
+    void wait(unsigned type){
+        this->core.wait_until(type);
+    }
+
+
+private:
+    /****************************************************************************
+     * start opcode definitions
+     ****************************************************************************/
+    struct InstructionDesriptor {
+        size_t length;
+        uint32_t value;
+        uint32_t mask;
+        compile_func op;
+    };
+
+    const std::array<InstructionDesriptor, ${instructions.size}> instr_descr = {{
+         /* entries are: size, valid value, valid mask, function ptr */<%instructions.each{instr -> %>
+        /* instruction ${instr.instruction.name} */
+        {${instr.length}, ${instr.value}, ${instr.mask}, &this_class::__${generator.functionName(instr.name)}},<%}%>
+    }};
+ 
+    /* instruction definitions */<%instructions.eachWithIndex{instr, idx -> %>
+    /* instruction ${idx}: ${instr.name} */
+    compile_ret_t __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr){<%instr.code.eachLine{%>
+        ${it}<%}%>
+    }
+    <%}%>
+    /****************************************************************************
+     * end opcode definitions
+     ****************************************************************************/
+    compile_ret_t illegal_intruction(virt_addr_t &pc, code_word_t instr) {
+        pc = pc + ((instr & 3) == 3 ? 4 : 2);
+        return pc;
+    }
+};
+
+template <typename CODE_WORD> void debug_fn(CODE_WORD insn) {
+    volatile CODE_WORD x = insn;
+    insn = 2 * x;
+}
+
+template <typename ARCH> vm_impl<ARCH>::vm_impl() { this(new ARCH()); }
+
+template <typename ARCH>
+vm_impl<ARCH>::vm_impl(ARCH &core, unsigned core_id, unsigned cluster_id)
+: vm_base<ARCH>(core, core_id, cluster_id) {
+    qlut[0] = lut_00.data();
+    qlut[1] = lut_01.data();
+    qlut[2] = lut_10.data();
+    qlut[3] = lut_11.data();
+    for (auto instr : instr_descr) {
+        auto quantrant = instr.value & 0x3;
+        expand_bit_mask(29, lutmasks[quantrant], instr.value >> 2, instr.mask >> 2, 0, qlut[quantrant], instr.op);
+    }
+}
+
+template <typename ARCH>
+typename vm_base<ARCH>::virt_addr_t vm_impl<ARCH>::execute_inst(virt_addr_t start, std::function<bool(void)> pred) {
+    // we fetch at max 4 byte, alignment is 2
+    enum {TRAP_ID=1<<16};
+    const typename traits<ARCH>::addr_t upper_bits = ~traits<ARCH>::PGMASK;
+    code_word_t insn = 0;
+    auto *const data = (uint8_t *)&insn;
+    auto pc=start;
+    while(pred){
+        auto paddr = this->core.v2p(pc);
+        if ((pc.val & upper_bits) != ((pc.val + 2) & upper_bits)) { // we may cross a page boundary
+            if (this->core.read(paddr, 2, data) != iss::Ok) throw trap_access(TRAP_ID, pc.val);
+            if ((insn & 0x3) == 0x3) // this is a 32bit instruction
+                if (this->core.read(this->core.v2p(pc + 2), 2, data + 2) != iss::Ok) throw trap_access(TRAP_ID, pc.val);
+        } else {
+            if (this->core.read(paddr, 4, data) != iss::Ok) throw trap_access(TRAP_ID, pc.val);
+        }
+        if (insn == 0x0000006f || (insn&0xffff)==0xa001) throw simulation_stopped(0); // 'J 0' or 'C.J 0'
+        auto lut_val = extract_fields(insn);
+        auto f = qlut[insn & 0x3][lut_val];
+        if (!f)
+            f = &this_class::illegal_intruction;
+        pc = (this->*f)(pc, insn);
+    }
+    return pc;
+}
+
+} // namespace mnrv32
+
+template <>
+std::unique_ptr<vm_if> create<arch::${coreDef.name.toLowerCase()}>(arch::${coreDef.name.toLowerCase()} *core, unsigned short port, bool dump) {
+    auto ret = new ${coreDef.name.toLowerCase()}::vm_impl<arch::${coreDef.name.toLowerCase()}>(*core, dump);
+    if (port != 0) debugger::server<debugger::gdb_session>::run_server(ret, port);
+    return std::unique_ptr<vm_if>(ret);
+}
+} // namespace interp
+} // namespace iss

gen_input/templates/llvm/CORENAME_cyles.txt.gtl

@@ -0,0 +1,9 @@
+{ 
+	"${coreDef.name}" : [<%instructions.eachWithIndex{instr,index -> %>${index==0?"":","}
+		{
+			"name"  : "${instr.name}",
+			"size"  : ${instr.length},
+			"delay" : ${generator.hasAttribute(instr.instruction, com.minres.coredsl.coreDsl.InstrAttribute.COND)?[1,1]:1}
+		}<%}%>
+	]
+}

gen_input/templates/llvm/incl-CORENAME.h.gtl

@@ -0,0 +1,221 @@
+/*******************************************************************************
+ * 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.
+ *
+ *******************************************************************************/
+
+<% 
+import com.minres.coredsl.coreDsl.Register
+import com.minres.coredsl.coreDsl.RegisterFile
+import com.minres.coredsl.coreDsl.RegisterAlias
+def getTypeSize(size){
+	if(size > 32) 64 else if(size > 16) 32 else if(size > 8) 16 else 8
+}
+def getOriginalName(reg){
+    if( reg.original instanceof RegisterFile) {
+    	if( reg.index != null ) {
+        	return reg.original.name+generator.generateHostCode(reg.index)
+        } else {
+        	return reg.original.name
+        }
+    } else if(reg.original instanceof Register){
+        return reg.original.name
+    }
+}
+def getRegisterNames(){
+	def regNames = []
+ 	allRegs.each { reg -> 
+		if( reg instanceof RegisterFile) {
+			(reg.range.right..reg.range.left).each{
+    			regNames+=reg.name.toLowerCase()+it
+            }
+        } else if(reg instanceof Register){
+    		regNames+=reg.name.toLowerCase()
+        }
+    }
+    return regNames
+}
+def getRegisterAliasNames(){
+	def regMap = allRegs.findAll{it instanceof RegisterAlias }.collectEntries {[getOriginalName(it), it.name]}
+ 	return allRegs.findAll{it instanceof Register || it instanceof RegisterFile}.collect{reg ->
+		if( reg instanceof RegisterFile) {
+			return (reg.range.right..reg.range.left).collect{ (regMap[reg.name]?:regMap[reg.name+it]?:reg.name.toLowerCase()+it).toLowerCase() }
+        } else if(reg instanceof Register){
+    		regMap[reg.name]?:reg.name.toLowerCase()
+        }
+ 	}.flatten()
+}
+%>
+#ifndef _${coreDef.name.toUpperCase()}_H_
+#define _${coreDef.name.toUpperCase()}_H_
+
+#include <array>
+#include <iss/arch/traits.h>
+#include <iss/arch_if.h>
+#include <iss/vm_if.h>
+
+namespace iss {
+namespace arch {
+
+struct ${coreDef.name.toLowerCase()};
+
+template <> struct traits<${coreDef.name.toLowerCase()}> {
+
+	constexpr static char const* const core_type = "${coreDef.name}";
+    
+  	static constexpr std::array<const char*, ${getRegisterNames().size}> reg_names{
+ 		{"${getRegisterNames().join("\", \"")}"}};
+ 
+  	static constexpr std::array<const char*, ${getRegisterAliasNames().size}> reg_aliases{
+ 		{"${getRegisterAliasNames().join("\", \"")}"}};
+
+    enum constants {${coreDef.constants.collect{c -> c.name+"="+c.value}.join(', ')}};
+
+    constexpr static unsigned FP_REGS_SIZE = ${coreDef.constants.find {it.name=='FLEN'}?.value?:0};
+
+    enum reg_e {<%
+     	allRegs.each { reg -> 
+    		if( reg instanceof RegisterFile) {
+    			(reg.range.right..reg.range.left).each{%>
+        ${reg.name}${it},<%
+                }
+            } else if(reg instanceof Register){ %>
+        ${reg.name},<%  
+            }
+        }%>
+        NUM_REGS,
+        NEXT_${pc.name}=NUM_REGS,
+        TRAP_STATE,
+        PENDING_TRAP,
+        MACHINE_STATE,
+        LAST_BRANCH,
+        ICOUNT<% 
+     	allRegs.each { reg -> 
+    		if(reg instanceof RegisterAlias){ def aliasname=getOriginalName(reg)%>,
+        ${reg.name} = ${aliasname}<%
+            }
+        }%>
+    };
+
+    using reg_t = uint${regDataWidth}_t;
+
+    using addr_t = uint${addrDataWidth}_t;
+
+    using code_word_t = uint${addrDataWidth}_t; //TODO: check removal
+
+    using virt_addr_t = iss::typed_addr_t<iss::address_type::VIRTUAL>;
+
+    using phys_addr_t = iss::typed_addr_t<iss::address_type::PHYSICAL>;
+
+ 	static constexpr std::array<const uint32_t, ${regSizes.size}> reg_bit_widths{
+ 		{${regSizes.join(",")}}};
+
+    static constexpr std::array<const uint32_t, ${regOffsets.size}> reg_byte_offsets{
+    	{${regOffsets.join(",")}}};
+
+    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 { ${allSpaces.collect{s -> s.name}.join(', ')} };
+};
+
+struct ${coreDef.name.toLowerCase()}: public arch_if {
+
+    using virt_addr_t = typename traits<${coreDef.name.toLowerCase()}>::virt_addr_t;
+    using phys_addr_t = typename traits<${coreDef.name.toLowerCase()}>::phys_addr_t;
+    using reg_t =  typename traits<${coreDef.name.toLowerCase()}>::reg_t;
+    using addr_t = typename traits<${coreDef.name.toLowerCase()}>::addr_t;
+
+    ${coreDef.name.toLowerCase()}();
+    ~${coreDef.name.toLowerCase()}();
+
+    void reset(uint64_t address=0) override;
+
+    uint8_t* get_regs_base_ptr() override;
+    /// deprecated
+    void get_reg(short idx, std::vector<uint8_t>& value) override {}
+    void set_reg(short idx, const std::vector<uint8_t>& 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<${coreDef.name.toLowerCase()}>::MEM || addr.type == iss::address_type::PHYSICAL ||
+                addr_mode[static_cast<uint16_t>(addr.access)&0x3]==address_type::PHYSICAL) {
+            return phys_addr_t(addr.access, addr.space, addr.val&traits<${coreDef.name.toLowerCase()}>::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 ${coreDef.name}_regs {<%
+     	allRegs.each { reg -> 
+    		if( reg instanceof RegisterFile) {
+    			(reg.range.right..reg.range.left).each{%>
+        uint${generator.getSize(reg)}_t ${reg.name}${it} = 0;<%
+                }
+            } else if(reg instanceof Register){ %>
+        uint${generator.getSize(reg)}_t ${reg.name} = 0;<%
+            }
+        }%>
+        uint${generator.getSize(pc)}_t NEXT_${pc.name} = 0;
+        uint32_t trap_state = 0, pending_trap = 0, machine_state = 0, last_branch = 0;
+        uint64_t icount = 0;
+    } reg;
+
+    std::array<address_type, 4> addr_mode;
+    
+    bool interrupt_sim=false;
+<%
+def fcsr = allRegs.find {it.name=='FCSR'}
+if(fcsr != null) {%>
+	uint${generator.getSize(fcsr)}_t get_fcsr(){return reg.FCSR;}
+	void set_fcsr(uint${generator.getSize(fcsr)}_t val){reg.FCSR = val;}		
+<%} else { %>
+	uint32_t get_fcsr(){return 0;}
+	void set_fcsr(uint32_t val){}
+<%}%>
+};
+
+}
+}            
+#endif /* _${coreDef.name.toUpperCase()}_H_ */

gen_input/templates/llvm/src-CORENAME.cpp.gtl

@@ -0,0 +1,117 @@
+/*******************************************************************************
+ * 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.
+ *
+ *******************************************************************************/
+ <% 
+import com.minres.coredsl.coreDsl.Register
+import com.minres.coredsl.coreDsl.RegisterFile
+import com.minres.coredsl.coreDsl.RegisterAlias
+def getOriginalName(reg){
+    if( reg.original instanceof RegisterFile) {
+    	if( reg.index != null ) {
+        	return reg.original.name+generator.generateHostCode(reg.index)
+        } else {
+        	return reg.original.name
+        }
+    } else if(reg.original instanceof Register){
+        return reg.original.name
+    }
+}
+def getRegisterNames(){
+	def regNames = []
+ 	allRegs.each { reg -> 
+		if( reg instanceof RegisterFile) {
+			(reg.range.right..reg.range.left).each{
+    			regNames+=reg.name.toLowerCase()+it
+            }
+        } else if(reg instanceof Register){
+    		regNames+=reg.name.toLowerCase()
+        }
+    }
+    return regNames
+}
+def getRegisterAliasNames(){
+	def regMap = allRegs.findAll{it instanceof RegisterAlias }.collectEntries {[getOriginalName(it), it.name]}
+ 	return allRegs.findAll{it instanceof Register || it instanceof RegisterFile}.collect{reg ->
+		if( reg instanceof RegisterFile) {
+			return (reg.range.right..reg.range.left).collect{ (regMap[reg.name]?:regMap[reg.name+it]?:reg.name.toLowerCase()+it).toLowerCase() }
+        } else if(reg instanceof Register){
+    		regMap[reg.name]?:reg.name.toLowerCase()
+        }
+ 	}.flatten()
+}
+%>
+#include "util/ities.h"
+#include <util/logging.h>
+
+#include <elfio/elfio.hpp>
+#include <iss/arch/${coreDef.name.toLowerCase()}.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include <ihex.h>
+#ifdef __cplusplus
+}
+#endif
+#include <cstdio>
+#include <cstring>
+#include <fstream>
+
+using namespace iss::arch;
+
+constexpr std::array<const char*, ${getRegisterNames().size}>    iss::arch::traits<iss::arch::${coreDef.name.toLowerCase()}>::reg_names;
+constexpr std::array<const char*, ${getRegisterAliasNames().size}>    iss::arch::traits<iss::arch::${coreDef.name.toLowerCase()}>::reg_aliases;
+constexpr std::array<const uint32_t, ${regSizes.size}> iss::arch::traits<iss::arch::${coreDef.name.toLowerCase()}>::reg_bit_widths;
+constexpr std::array<const uint32_t, ${regOffsets.size}> iss::arch::traits<iss::arch::${coreDef.name.toLowerCase()}>::reg_byte_offsets;
+
+${coreDef.name.toLowerCase()}::${coreDef.name.toLowerCase()}() {
+    reg.icount = 0;
+}
+
+${coreDef.name.toLowerCase()}::~${coreDef.name.toLowerCase()}() = default;
+
+void ${coreDef.name.toLowerCase()}::reset(uint64_t address) {
+    for(size_t i=0; i<traits<${coreDef.name.toLowerCase()}>::NUM_REGS; ++i) set_reg(i, std::vector<uint8_t>(sizeof(traits<${coreDef.name.toLowerCase()}>::reg_t),0));
+    reg.PC=address;
+    reg.NEXT_PC=reg.PC;
+    reg.trap_state=0;
+    reg.machine_state=0x3;
+    reg.icount=0;
+}
+
+uint8_t *${coreDef.name.toLowerCase()}::get_regs_base_ptr() {
+	return reinterpret_cast<uint8_t*>(&reg);
+}
+
+${coreDef.name.toLowerCase()}::phys_addr_t ${coreDef.name.toLowerCase()}::virt2phys(const iss::addr_t &pc) {
+    return phys_addr_t(pc); // change logical address to physical address
+}
+

gen_input/templates/llvm/vm-vm_CORENAME.cpp.gtl

@@ -49,19 +49,17 @@
 namespace iss {
 namespace llvm {
 namespace fp_impl {
-void add_fp_functions_2_module(llvm::Module *, unsigned, unsigned);
+void add_fp_functions_2_module(::llvm::Module *, unsigned, unsigned);
-}
 }
 
 namespace ${coreDef.name.toLowerCase()} {
+using namespace ::llvm;
 using namespace iss::arch;
-using namespace llvm;
 using namespace iss::debugger;
-using namespace iss::vm::llvm;
 
-template <typename ARCH> class vm_impl : public vm_base<ARCH> {
+template <typename ARCH> class vm_impl : public vm::llvm::vm_base<ARCH> {
 public:
-    using super = typename iss::vm::llvm::vm_base<ARCH>;
+    using super = typename iss::llvm::vm_base<ARCH>;
     using virt_addr_t = typename super::virt_addr_t;
     using phys_addr_t = typename super::phys_addr_t;
     using code_word_t = typename super::code_word_t;
@@ -323,5 +321,5 @@ std::unique_ptr<vm_if> create<arch::${coreDef.name.toLowerCase()}>(arch::${coreD
     if (port != 0) debugger::server<debugger::gdb_session>::run_server(ret, port);
     return std::unique_ptr<vm_if>(ret);
 }
-
+} // namespace llvm
 } // namespace iss

gen_input/templates/tcc/incl-CORENAME.h.gtl

@@ -172,6 +172,8 @@ struct ${coreDef.name.toLowerCase()}: public arch_if {
 
     inline bool should_stop() { return interrupt_sim; }
 
+    inline uint64_t stop_code() { return interrupt_sim; }
+
     inline phys_addr_t v2p(const iss::addr_t& addr){
         if (addr.space != traits<${coreDef.name.toLowerCase()}>::MEM || addr.type == iss::address_type::PHYSICAL ||
                 addr_mode[static_cast<uint16_t>(addr.access)&0x3]==address_type::PHYSICAL) {
@@ -204,7 +206,7 @@ protected:
 
     std::array<address_type, 4> addr_mode;
     
-    bool interrupt_sim=false;
+    uint64_t interrupt_sim=0;
 <%
 def fcsr = allRegs.find {it.name=='FCSR'}
 if(fcsr != null) {%>

gen_input/templates/tcc/vm-vm_CORENAME.cpp.gtl

@@ -35,9 +35,9 @@
 #include <iss/debugger/gdb_session.h>
 #include <iss/debugger/server.h>
 #include <iss/iss.h>
-#include <iss/llvm/vm_base.h>
+#include <iss/tcc/vm_base.h>
 #include <util/logging.h>
-#include <strstream>
+#include <sstream>
 
 #ifndef FMT_HEADER_ONLY
 #define FMT_HEADER_ONLY
@@ -48,25 +48,19 @@
 #include <iss/debugger/riscv_target_adapter.h>
 
 namespace iss {
-namespace vm {
-namespace fp_impl {
-void add_fp_functions_2_module(llvm::Module *, unsigned, unsigned);
-}
-}
-
 namespace tcc {
 namespace ${coreDef.name.toLowerCase()} {
 using namespace iss::arch;
 using namespace iss::debugger;
-using namespace iss::vm::llvm;
 
-template <typename ARCH> class vm_impl : public vm_base<ARCH> {
+template <typename ARCH> class vm_impl : public iss::tcc::vm_base<ARCH> {
 public:
-    using super = typename iss::vm::llvm::vm_base<ARCH>;
+    using super       = typename iss::tcc::vm_base<ARCH>;
     using virt_addr_t = typename super::virt_addr_t;
     using phys_addr_t = typename super::phys_addr_t;
     using code_word_t = typename super::code_word_t;
-    using addr_t = typename super::addr_t;
+    using addr_t      = typename super::addr_t;
+    using tu_builder  = typename super::tu_builder;
 
     vm_impl();
 
@@ -86,45 +80,43 @@ protected:
 
     using this_class = vm_impl<ARCH>;
     using compile_ret_t = std::tuple<continuation_e>;
-    using compile_func = compile_ret_t (this_class::*)(virt_addr_t &pc, code_word_t instr, std::ostringstream&);
+    using compile_func = compile_ret_t (this_class::*)(virt_addr_t &pc, code_word_t instr, tu_builder&);
 
     inline const char *name(size_t index){return traits<ARCH>::reg_aliases.at(index);}
 
-    template <typename T> inline ConstantInt *size(T type) {
+    void setup_module(std::string m) override {
-        return ConstantInt::get(getContext(), APInt(32, type->getType()->getScalarSizeInBits()));
-    }
-
-    void setup_module(Module* m) override {
         super::setup_module(m);
-        iss::vm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
     }
 
-    inline Value *gen_choose(Value *cond, Value *trueVal, Value *falseVal, unsigned size) {
+    compile_ret_t gen_single_inst_behavior(virt_addr_t &, unsigned int &, tu_builder&) override;
-        return super::gen_cond_assign(cond, this->gen_ext(trueVal, size), this->gen_ext(falseVal, size));
+
+    void gen_trap_behavior(tu_builder& tu) override;
+
+    void gen_raise_trap(tu_builder& tu, uint16_t trap_id, uint16_t cause);
+
+    void gen_leave_trap(tu_builder& tu, unsigned lvl);
+
+    void gen_wait(tu_builder& tu, unsigned type);
+
+    inline void gen_trap_check(tu_builder& tu) {
+        tu("if(*trap_state!=0) goto trap_entry;");
     }
 
-    compile_ret_t gen_single_inst_behavior(virt_addr_t &, unsigned int &, std::ostringstream&) override;
+    inline void gen_set_pc(tu_builder& tu, virt_addr_t pc, unsigned reg_num) {
-
+        switch(reg_num){
-    void gen_leave_behavior(BasicBlock *leave_blk) override;
+        case traits<ARCH>::NEXT_PC:
-
+            tu("*next_pc = {:#x};", pc.val);
-    void gen_raise_trap(uint16_t trap_id, uint16_t cause);
+            break;
-
+        case traits<ARCH>::PC:
-    void gen_leave_trap(unsigned lvl);
+            tu("*pc = {:#x};", pc.val);
-
+            break;
-    void gen_wait(unsigned type);
+        default:
-
+            if(!tu.defined_regs[reg_num]){
-    void gen_trap_behavior(BasicBlock *) override;
+                tu("reg_t* reg{:02d} = (reg_t*){:#x};", reg_num, reinterpret_cast<uintptr_t>(get_reg_ptr(reg_num)));
-
+            tu.defined_regs[reg_num]=true;
-    void gen_trap_check(BasicBlock *bb);
+            }
-
+            tu("*reg{:02d} = {:#x};", reg_num, pc.val);
-    inline Value *gen_reg_load(unsigned i, unsigned level = 0) {
+        }
-        return this->builder.CreateLoad(get_reg_ptr(i), false);
-    }
-
-    inline void gen_set_pc(virt_addr_t pc, unsigned reg_num) {
-        Value *next_pc_v = this->builder.CreateSExtOrTrunc(this->gen_const(traits<ARCH>::XLEN, pc.val),
-                                                           this->get_type(traits<ARCH>::XLEN));
-        this->builder.CreateStore(next_pc_v, get_reg_ptr(reg_num), true);
     }
 
     // some compile time constants
@@ -138,9 +130,9 @@ protected:
     std::array<compile_func, LUT_SIZE_C> lut_00, lut_01, lut_10;
     std::array<compile_func, LUT_SIZE> lut_11;
 
-	std::array<compile_func *, 4> qlut;
+    std::array<compile_func *, 4> qlut;
 
-	std::array<const uint32_t, 4> lutmasks = {{EXTR_MASK16, EXTR_MASK16, EXTR_MASK16, EXTR_MASK32}};
+    std::array<const uint32_t, 4> lutmasks = {{EXTR_MASK16, EXTR_MASK16, EXTR_MASK16, EXTR_MASK32}};
 
     void expand_bit_mask(int pos, uint32_t mask, uint32_t value, uint32_t valid, uint32_t idx, compile_func lut[],
                          compile_func f) {
@@ -198,25 +190,19 @@ private:
  
     /* instruction definitions */<%instructions.eachWithIndex{instr, idx -> %>
     /* instruction ${idx}: ${instr.name} */
-    compile_ret_t __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr, std::ostringstream& os){<%instr.code.eachLine{%>
+    compile_ret_t __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr, tu_builder& tu){<%instr.code.eachLine{%>
-    	${it}<%}%>
+        ${it}<%}%>
     }
     <%}%>
     /****************************************************************************
      * end opcode definitions
      ****************************************************************************/
-    compile_ret_t illegal_intruction(virt_addr_t &pc, code_word_t instr, std::stringstream& os) {
+    compile_ret_t illegal_intruction(virt_addr_t &pc, code_word_t instr, tu_builder& tu) {
-		this->gen_sync(iss::PRE_SYNC, instr_descr.size());
+        vm_impl::gen_sync(tu, iss::PRE_SYNC, instr_descr.size());
-        this->builder.CreateStore(this->builder.CreateLoad(get_reg_ptr(traits<ARCH>::NEXT_PC), true),
-                                   get_reg_ptr(traits<ARCH>::PC), true);
-        this->builder.CreateStore(
-            this->builder.CreateAdd(this->builder.CreateLoad(get_reg_ptr(traits<ARCH>::ICOUNT), true),
-                                     this->gen_const(64U, 1)),
-            get_reg_ptr(traits<ARCH>::ICOUNT), true);
         pc = pc + ((instr & 3) == 3 ? 4 : 2);
-        this->gen_raise_trap(0, 2);     // illegal instruction trap
+        gen_raise_trap(tu, 0, 2);     // illegal instruction trap
-		this->gen_sync(iss::POST_SYNC, instr_descr.size());
+        vm_impl::gen_sync(tu, iss::POST_SYNC, instr_descr.size());
-        this->gen_trap_check(this->leave_blk);
+        vm_impl::gen_trap_check(tu);
         return BRANCH;
     }
 };
@@ -243,7 +229,7 @@ vm_impl<ARCH>::vm_impl(ARCH &core, unsigned core_id, unsigned cluster_id)
 
 template <typename ARCH>
 std::tuple<continuation_e>
-vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt, std::ostringstream& os) {
+vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt, tu_builder& tu) {
     // we fetch at max 4 byte, alignment is 2
     enum {TRAP_ID=1<<16};
     code_word_t insn = 0;
@@ -269,53 +255,31 @@ vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt,
     if (f == nullptr) {
         f = &this_class::illegal_intruction;
     }
-    return (this->*f)(pc, insn, this_block);
+    return (this->*f)(pc, insn, tu);
 }
 
-template <typename ARCH> void vm_impl<ARCH>::gen_leave_behavior(BasicBlock *leave_blk) {
+template <typename ARCH> void vm_impl<ARCH>::gen_raise_trap(tu_builder& tu, uint16_t trap_id, uint16_t cause) {
-    this->builder.SetInsertPoint(leave_blk);
+    tu("  *trap_state = {:#x};", 0x80 << 24 | (cause << 16) | trap_id);
-    this->builder.CreateRet(this->builder.CreateLoad(get_reg_ptr(arch::traits<ARCH>::NEXT_PC), false));
+    tu.store(tu.constant(std::numeric_limits<uint32_t>::max(), 32),traits<ARCH>::LAST_BRANCH);
 }
 
-template <typename ARCH> void vm_impl<ARCH>::gen_raise_trap(uint16_t trap_id, uint16_t cause) {
+template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(tu_builder& tu, unsigned lvl) {
-    auto *TRAP_val = this->gen_const(32, 0x80 << 24 | (cause << 16) | trap_id);
+    tu("leave_trap(core_ptr, {});", lvl);
-    this->builder.CreateStore(TRAP_val, get_reg_ptr(traits<ARCH>::TRAP_STATE), true);
+    tu.store(tu.read_mem(traits<ARCH>::CSR, (lvl << 8) + 0x41, traits<ARCH>::XLEN),traits<ARCH>::NEXT_PC);
-    this->builder.CreateStore(this->gen_const(32U, std::numeric_limits<uint32_t>::max()), get_reg_ptr(traits<ARCH>::LAST_BRANCH), false);
+    tu.store(tu.constant(std::numeric_limits<uint32_t>::max(), 32),traits<ARCH>::LAST_BRANCH);
 }
 
-template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(unsigned lvl) {
+template <typename ARCH> void vm_impl<ARCH>::gen_wait(tu_builder& tu, unsigned type) {
-    std::vector<Value *> args{ this->core_ptr, ConstantInt::get(getContext(), APInt(64, lvl)) };
-    this->builder.CreateCall(this->mod->getFunction("leave_trap"), args);
-    auto *PC_val = this->gen_read_mem(traits<ARCH>::CSR, (lvl << 8) + 0x41, traits<ARCH>::XLEN / 8);
-    this->builder.CreateStore(PC_val, get_reg_ptr(traits<ARCH>::NEXT_PC), false);
-    this->builder.CreateStore(this->gen_const(32U, std::numeric_limits<uint32_t>::max()), get_reg_ptr(traits<ARCH>::LAST_BRANCH), false);
 }
 
-template <typename ARCH> void vm_impl<ARCH>::gen_wait(unsigned type) {
+template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(tu_builder& tu) {
-    std::vector<Value *> args{ this->core_ptr, ConstantInt::get(getContext(), APInt(64, type)) };
+    tu("trap_entry:");
-    this->builder.CreateCall(this->mod->getFunction("wait"), args);
+    tu("enter_trap(core_ptr, *trap_state, *pc);");
+    tu.store(tu.constant(std::numeric_limits<uint32_t>::max(),32),traits<ARCH>::LAST_BRANCH);
+    tu("return *next_pc;");
 }
 
-template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(BasicBlock *trap_blk) {
+} // namespace mnrv32
-    this->builder.SetInsertPoint(trap_blk);
-    auto *trap_state_val = this->builder.CreateLoad(get_reg_ptr(traits<ARCH>::TRAP_STATE), true);
-    this->builder.CreateStore(this->gen_const(32U, std::numeric_limits<uint32_t>::max()),
-                              get_reg_ptr(traits<ARCH>::LAST_BRANCH), false);
-    std::vector<Value *> args{this->core_ptr, this->adj_to64(trap_state_val),
-                              this->adj_to64(this->builder.CreateLoad(get_reg_ptr(traits<ARCH>::PC), false))};
-    this->builder.CreateCall(this->mod->getFunction("enter_trap"), args);
-    auto *trap_addr_val = this->builder.CreateLoad(get_reg_ptr(traits<ARCH>::NEXT_PC), false);
-    this->builder.CreateRet(trap_addr_val);
-}
-
-template <typename ARCH> inline void vm_impl<ARCH>::gen_trap_check(BasicBlock *bb) {
-    auto *v = this->builder.CreateLoad(get_reg_ptr(arch::traits<ARCH>::TRAP_STATE), true);
-    this->gen_cond_branch(this->builder.CreateICmp(
-                              ICmpInst::ICMP_EQ, v,
-                              ConstantInt::get(getContext(), APInt(v->getType()->getIntegerBitWidth(), 0))),
-                          bb, this->trap_blk, 1);
-}
-} // namespace ${coreDef.name.toLowerCase()}
 
 template <>
 std::unique_ptr<vm_if> create<arch::${coreDef.name.toLowerCase()}>(arch::${coreDef.name.toLowerCase()} *core, unsigned short port, bool dump) {

incl/iss/arch/mnrv32.h

@@ -182,6 +182,8 @@ struct mnrv32: public arch_if {
 
     inline bool should_stop() { return interrupt_sim; }
 
+    inline uint64_t stop_code() { return interrupt_sim; }
+
     inline phys_addr_t v2p(const iss::addr_t& addr){
         if (addr.space != traits<mnrv32>::MEM || addr.type == iss::address_type::PHYSICAL ||
                 addr_mode[static_cast<uint16_t>(addr.access)&0x3]==address_type::PHYSICAL) {
@@ -238,7 +240,7 @@ protected:
 
     std::array<address_type, 4> addr_mode;
     
-    bool interrupt_sim=false;
+    uint64_t interrupt_sim=0;
 
 	uint32_t get_fcsr(){return 0;}
 	void set_fcsr(uint32_t val){}

incl/iss/arch/riscv_hart_msu_vp.h

@@ -657,10 +657,12 @@ iss::status riscv_hart_msu_vp<BASE>::read(const address_type type, const access_
         const uint64_t addr, const unsigned length, uint8_t *const data) {
 #ifndef NDEBUG
     if (access && iss::access_type::DEBUG) {
-        LOG(TRACE) << "debug read of " << length << " bytes @addr " << addr;
+        LOG(TRACEALL) << "debug read of " << length << " bytes @addr 0x" << std::hex << addr;
+    } else if(access && iss::access_type::FETCH){
+        LOG(TRACEALL) << "fetch of " << length << " bytes  @addr 0x" << std::hex << addr;
     } else {
-        LOG(TRACE) << "read of " << length << " bytes  @addr " << addr;
+        LOG(TRACE) << "read of " << length << " bytes  @addr 0x" << std::hex << addr;
-    }
+   }
 #endif
     try {
         switch (space) {
@@ -738,19 +740,19 @@ iss::status riscv_hart_msu_vp<BASE>::write(const address_type type, const access
     switch (length) {
     case 8:
         LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint64_t *)&data[0] << std::dec
-                   << ") @addr " << addr;
+                   << ") @addr 0x" << std::hex << addr;
         break;
     case 4:
         LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint32_t *)&data[0] << std::dec
-                   << ") @addr " << addr;
+                   << ") @addr 0x" << std::hex << addr;
         break;
     case 2:
         LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << *(uint16_t *)&data[0] << std::dec
-                   << ") @addr " << addr;
+                   << ") @addr 0x" << std::hex << addr;
         break;
     case 1:
         LOG(TRACE) << prefix << "write of " << length << " bytes (0x" << std::hex << (uint16_t)data[0] << std::dec
-                   << ") @addr " << addr;
+                   << ") @addr 0x" << std::hex << addr;
         break;
     default:
         LOG(TRACE) << prefix << "write of " << length << " bytes @addr " << addr;
@@ -1082,7 +1084,10 @@ iss::status riscv_hart_msu_vp<BASE>::write_mem(phys_addr_t paddr, unsigned lengt
                             LOG(INFO) << "tohost value is 0x" << std::hex << hostvar << std::dec << " (" << hostvar
                                       << "), stopping simulation";
                         }
-                        throw(iss::simulation_stopped(hostvar));
+                        this->reg.trap_state=std::numeric_limits<uint32_t>::max();
+                        this->interrupt_sim=hostvar;
+                        break;
+                        //throw(iss::simulation_stopped(hostvar));
                     case 0x0101: {
                         char c = static_cast<char>(hostvar & 0xff);
                         if (c == '\n' || c == 0) {
@@ -1313,8 +1318,9 @@ template <typename BASE> uint64_t riscv_hart_msu_vp<BASE>::enter_trap(uint64_t f
     this->reg.trap_state = 0;
     std::array<char, 32> buffer;
     sprintf(buffer.data(), "0x%016lx", addr);
+    if((flags&0xffffffff) != 0xffffffff)
     CLOG(INFO, disass) << (trap_id ? "Interrupt" : "Trap") << " with cause '"
-                       << (trap_id ? irq_str[cause] : trap_str[cause]) << "' (" << trap_id << ")"
+                       << (trap_id ? irq_str[cause] : trap_str[cause]) << "' (" << cause << ")"
                        << " at address " << buffer.data() << " occurred, changing privilege level from "
                        << lvl[cur_priv] << " to " << lvl[new_priv];
     update_vm_info();

incl/sysc/core_complex.h

@@ -75,8 +75,6 @@ class core_wrapper;
 
 class core_complex : public sc_core::sc_module, public scc::traceable {
 public:
-    SC_HAS_PROCESS(core_complex);// NOLINT
-
     scc::initiator_mixin<scv4tlm::tlm_rec_initiator_socket<32>> initiator;
 
     sc_core::sc_in<sc_core::sc_time> clk_i;

softfloat/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.3)
+cmake_minimum_required(VERSION 3.12)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/../cmake) # main (top) cmake dir
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake) # project specific cmake dir
 

src/main.cpp

@@ -36,10 +36,7 @@
 #include <boost/lexical_cast.hpp>
 #include <boost/program_options.hpp>
 #include <iss/arch/riscv_hart_msu_vp.h>
-#include <iss/arch/rv32imac.h>
+#include <iss/arch/mnrv32.h>
-#include <iss/arch/rv32gc.h>
-#include <iss/arch/rv64gc.h>
-#include <iss/arch/rv64i.h>
 #include <iss/llvm/jit_helper.h>
 #include <iss/log_categories.h>
 #include <iss/plugin/cycle_estimate.h>
@@ -66,6 +63,7 @@ int main(int argc, char *argv[]) {
         ("elf", po::value<std::vector<std::string>>(), "ELF file(s) to load")
         ("mem,m", po::value<std::string>(), "the memory input file")
         ("plugin,p", po::value<std::vector<std::string>>(), "plugin to activate")
+        ("backend", po::value<std::string>()->default_value("tcc"), "the memory input file")
         ("isa", po::value<std::string>()->default_value("rv32gc"), "isa to use for simulation");
     // clang-format on
     auto parsed = po::command_line_parser(argc, argv).options(desc).allow_unregistered().run();
@@ -85,6 +83,8 @@ int main(int argc, char *argv[]) {
     }
     std::vector<std::string> args = collect_unrecognized(parsed.options, po::include_positional);
 
+    LOGGER(DEFAULT)::print_time() = false;
+    LOGGER(connection)::print_time() = false;
     if (clim.count("verbose")) {
         auto l = logging::as_log_level(clim["verbose"].as<int>());
         LOGGER(DEFAULT)::reporting_level() = l;
@@ -107,26 +107,14 @@ int main(int argc, char *argv[]) {
         std::unique_ptr<iss::vm_if> vm{nullptr};
         std::unique_ptr<iss::arch_if> cpu{nullptr};
         std::string isa_opt(clim["isa"].as<std::string>());
-//        if (isa_opt=="rv64ia") {
+        iss::arch::mnrv32* lcpu = new iss::arch::riscv_hart_msu_vp<iss::arch::mnrv32>();
-//            iss::arch::rv64i* lcpu = new iss::arch::riscv_hart_msu_vp<iss::arch::rv64i>();
+        if(clim["backend"].as<std::string>() == "interp")
-//            vm = iss::llvm::create(lcpu, clim["gdb-port"].as<unsigned>());
+            vm = iss::interp::create(lcpu, clim["gdb-port"].as<unsigned>());
-//            cpu.reset(lcpu);
+        if(clim["backend"].as<std::string>() == "llvm")
-//        } else if (isa_opt=="rv64gc") {
-//            iss::arch::rv64gc* lcpu = new iss::arch::riscv_hart_msu_vp<iss::arch::rv64gc>();
-//            vm = iss::llvm::create(lcpu, clim["gdb-port"].as<unsigned>());
-//            cpu.reset(lcpu);
-//        } else if (isa_opt=="rv32imac") {
-            iss::arch::rv32imac* lcpu = new iss::arch::riscv_hart_msu_vp<iss::arch::rv32imac>();
             vm = iss::llvm::create(lcpu, clim["gdb-port"].as<unsigned>());
-            cpu.reset(lcpu);
+        if(clim["backend"].as<std::string>() == "tcc")
-//        } else if (isa_opt=="rv32gc") {
+            vm = iss::tcc::create(lcpu, clim["gdb-port"].as<unsigned>());
-//            iss::arch::rv32gc* lcpu = new iss::arch::riscv_hart_msu_vp<iss::arch::rv32gc>();
+        cpu.reset(lcpu);
-//            vm = iss::llvm::create(lcpu, clim["gdb-port"].as<unsigned>());
-//            cpu.reset(lcpu);
-//        } else {
-//            LOG(ERROR) << "Illegal argument value for '--isa': " << clim["isa"].as<std::string>() << std::endl;
-//            return 127;
-//        }
         if (clim.count("plugin")) {
             for (std::string opt_val : clim["plugin"].as<std::vector<std::string>>()) {
                 std::string plugin_name{opt_val};
@@ -153,16 +141,16 @@ int main(int argc, char *argv[]) {
         if (clim.count("disass")) {
             vm->setDisassEnabled(true);
             LOGGER(disass)::reporting_level() = logging::INFO;
+            LOGGER(disass)::print_time() = false;
             auto file_name = clim["disass"].as<std::string>();
             if (file_name.length() > 0) {
                 LOG_OUTPUT(disass)::stream() = fopen(file_name.c_str(), "w");
-                LOGGER(disass)::print_time() = false;
                 LOGGER(disass)::print_severity() = false;
             }
         }
         uint64_t start_address = 0;
         if (clim.count("mem"))
-            vm->get_arch()->load_file(clim["mem"].as<std::string>(), iss::arch::traits<iss::arch::rv32imac>::MEM);
+            vm->get_arch()->load_file(clim["mem"].as<std::string>(), iss::arch::traits<iss::arch::mnrv32>::MEM);
         if (clim.count("elf"))
             for (std::string input : clim["elf"].as<std::vector<std::string>>()) {
                 auto start_addr = vm->get_arch()->load_file(input);

src/sysc/core_complex.cpp

@@ -32,7 +32,8 @@
 
 #include "sysc/core_complex.h"
 #include "iss/arch/riscv_hart_msu_vp.h"
-#include "iss/arch/rv32imac.h"
+//#include "iss/arch/rv32imac.h"
+#include "iss/arch/mnrv32.h"
 #include "iss/debugger/encoderdecoder.h"
 #include "iss/debugger/gdb_session.h"
 #include "iss/debugger/server.h"
@@ -59,6 +60,9 @@ namespace {
 iss::debugger::encoder_decoder encdec;
 }
 
+//using core_type = iss::arch::rv32imac;
+using core_type = iss::arch::mnrv32;
+
 namespace {
 
 std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
@@ -87,11 +91,10 @@ std::array<const char*, 12> irq_str = { {
 		"User external interrupt", "Supervisor external interrupt", "Reserved", "Machine external interrupt" } };
 }
 
-class core_wrapper : public iss::arch::riscv_hart_msu_vp<iss::arch::rv32imac> {
+class core_wrapper : public iss::arch::riscv_hart_msu_vp<core_type> {
 public:
-    using core_type = arch::rv32imac;
+    using base_type = arch::riscv_hart_msu_vp<core_type>;
-    using base_type = arch::riscv_hart_msu_vp<arch::rv32imac>;
+    using phys_addr_t = typename arch::traits<core_type>::phys_addr_t;
-    using phys_addr_t = typename arch::traits<arch::rv32imac>::phys_addr_t;
     core_wrapper(core_complex *owner)
     : owner(owner) 
     {
@@ -99,7 +102,7 @@ public:
 
     uint32_t get_mode() { return this->reg.machine_state; }
 
-    inline void set_interrupt_execution(bool v) { this->interrupt_sim = v; }
+    inline void set_interrupt_execution(bool v) { this->interrupt_sim = v?1:0; }
 
     inline bool get_interrupt_execution() { return this->interrupt_sim; }
 
@@ -252,6 +255,7 @@ core_complex::core_complex(sc_module_name name)
 , fetch_tr_handle(nullptr)
 #endif
 {
+    SC_HAS_PROCESS(core_complex);// NOLINT
     initiator.register_invalidate_direct_mem_ptr([=](uint64_t start, uint64_t end) -> void {
         auto lut_entry = read_lut.getEntry(start);
         if (lut_entry.get_granted_access() != tlm::tlm_dmi::DMI_ACCESS_NONE && end <= lut_entry.get_end_address() + 1) {
@@ -282,7 +286,7 @@ void core_complex::trace(sc_trace_file *trf) const {}
 
 void core_complex::before_end_of_elaboration() {
     cpu = scc::make_unique<core_wrapper>(this);
-    vm = llvm::create<arch::rv32imac>(cpu.get(), gdb_server_port.get_value(), dump_ir.get_value());
+    vm = llvm::create<core_type>(cpu.get(), gdb_server_port.get_value(), dump_ir.get_value());
 #ifdef WITH_SCV
     vm->setDisassEnabled(enable_disass.get_value() || m_db != nullptr);
 #else

src/vm/llvm/fp_functions.cpp

@@ -44,10 +44,11 @@ extern "C" {
 #include <limits>
 
 namespace iss {
-namespace vm {
+namespace llvm {
 namespace fp_impl {
 
 using namespace std;
+using namespace ::llvm;
 
 #define INT_TYPE(L)   Type::getIntNTy(mod->getContext(), L)
 #define FLOAT_TYPE    Type::getFloatTy(mod->getContext())
@@ -65,10 +66,9 @@ using namespace std;
 
 #define FDECL(NAME, RET, ...)                                                                                          \
     std::vector<Type *> NAME##_args{__VA_ARGS__};                                                                      \
-    FunctionType *NAME##_type = llvm::FunctionType::get(RET, NAME##_args, false);                                      \
+    FunctionType *NAME##_type = FunctionType::get(RET, NAME##_args, false);                                      \
     mod->getOrInsertFunction(#NAME, NAME##_type);
 
-using namespace llvm;
 
 void add_fp_functions_2_module(Module *mod, uint32_t flen, uint32_t xlen) {
     if(flen){

src/vm/llvm/vm_rv32gc.cpp

@@ -47,7 +47,7 @@
 #include <iss/debugger/riscv_target_adapter.h>
 
 namespace iss {
-namespace vm {
+namespace llvm {
 namespace fp_impl {
 void add_fp_functions_2_module(llvm::Module *, unsigned, unsigned);
 }
@@ -91,7 +91,7 @@ protected:
 
     void setup_module(Module* m) override {
         super::setup_module(m);
-        iss::vm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
+        iss::llvm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
     }
 
     inline Value *gen_choose(Value *cond, Value *trueVal, Value *falseVal, unsigned size) {

src/vm/llvm/vm_rv32imac.cpp

@@ -47,21 +47,21 @@
 #include <iss/debugger/riscv_target_adapter.h>
 
 namespace iss {
-namespace vm {
+namespace llvm {
 namespace fp_impl {
 void add_fp_functions_2_module(llvm::Module *, unsigned, unsigned);
 }
 }
-namespace llvm {
+
 namespace rv32imac {
 using namespace iss::arch;
 using namespace llvm;
 using namespace iss::debugger;
-using namespace iss::llvm;
+using namespace iss::vm::llvm;
 
 template <typename ARCH> class vm_impl : public vm_base<ARCH> {
 public:
-    using super = typename iss::llvm::vm_base<ARCH>;
+    using super = typename iss::vm::llvm::vm_base<ARCH>;
     using virt_addr_t = typename super::virt_addr_t;
     using phys_addr_t = typename super::phys_addr_t;
     using code_word_t = typename super::code_word_t;
@@ -91,7 +91,7 @@ protected:
 
     void setup_module(Module* m) override {
         super::setup_module(m);
-        iss::vm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
+        iss::llvm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
     }
 
     inline Value *gen_choose(Value *cond, Value *trueVal, Value *falseVal, unsigned size) {
@@ -4815,5 +4815,5 @@ std::unique_ptr<vm_if> create<arch::rv32imac>(arch::rv32imac *core, unsigned sho
     if (port != 0) debugger::server<debugger::gdb_session>::run_server(ret, port);
     return std::unique_ptr<vm_if>(ret);
 }
-}
+
 } // namespace iss

src/vm/llvm/vm_rv64gc.cpp

@@ -47,7 +47,7 @@
 #include <iss/debugger/riscv_target_adapter.h>
 
 namespace iss {
-namespace vm {
+namespace llvm {
 namespace fp_impl {
 void add_fp_functions_2_module(llvm::Module *, unsigned, unsigned);
 }
@@ -91,7 +91,7 @@ protected:
 
     void setup_module(Module* m) override {
         super::setup_module(m);
-        iss::vm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
+        iss::llvm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
     }
 
     inline Value *gen_choose(Value *cond, Value *trueVal, Value *falseVal, unsigned size) {

src/vm/llvm/vm_rv64i.cpp

@@ -47,7 +47,7 @@
 #include <iss/debugger/riscv_target_adapter.h>
 
 namespace iss {
-namespace vm {
+namespace llvm {
 namespace fp_impl {
 void add_fp_functions_2_module(llvm::Module *, unsigned, unsigned);
 }
@@ -57,11 +57,11 @@ namespace rv64i {
 using namespace iss::arch;
 using namespace llvm;
 using namespace iss::debugger;
-using namespace iss::vm::llvm;
+using namespace iss::llvm;
 
 template <typename ARCH> class vm_impl : public vm_base<ARCH> {
 public:
-    using super = typename iss::vm::llvm::vm_base<ARCH>;
+    using super = typename iss::llvm::vm_base<ARCH>;
     using virt_addr_t = typename super::virt_addr_t;
     using phys_addr_t = typename super::phys_addr_t;
     using code_word_t = typename super::code_word_t;
@@ -91,7 +91,7 @@ protected:
 
     void setup_module(Module* m) override {
         super::setup_module(m);
-        iss::vm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
+        iss::llvm::fp_impl::add_fp_functions_2_module(m, traits<ARCH>::FP_REGS_SIZE, traits<ARCH>::XLEN);
     }
 
     inline Value *gen_choose(Value *cond, Value *trueVal, Value *falseVal, unsigned size) {

src/vm/tcc/vm_rv64i.cpp

@@ -35,7 +35,7 @@
 #include <iss/debugger/gdb_session.h>
 #include <iss/debugger/server.h>
 #include <iss/iss.h>
-#include <iss/llvm/vm_base.h>
+#include <iss/tcc/vm_base.h>
 #include <util/logging.h>
 
 #ifndef FMT_HEADER_ONLY
@@ -57,11 +57,10 @@ namespace tcc {
 namespace rv64i {
 using namespace iss::arch;
 using namespace iss::debugger;
-using namespace iss::vm::llvm;
 
 template <typename ARCH> class vm_impl : public vm_base<ARCH> {
 public:
-    using super = typename iss::vm::llvm::vm_base<ARCH>;
+    using super = typename iss::tcc::vm_base<ARCH>;
     using virt_addr_t = typename super::virt_addr_t;
     using phys_addr_t = typename super::phys_addr_t;
     using code_word_t = typename super::code_word_t;
@@ -114,16 +113,14 @@ protected:
 
     void gen_trap_behavior(BasicBlock *) override;
 
-    void gen_trap_check(BasicBlock *bb);
+    std::string gen_trap_check(BasicBlock *bb);
 
     inline Value *gen_reg_load(unsigned i, unsigned level = 0) {
         return this->builder.CreateLoad(get_reg_ptr(i), false);
     }
 
-    inline void gen_set_pc(virt_addr_t pc, unsigned reg_num) {
+    inline std::string gen_set_pc(virt_addr_t pc, unsigned reg_num) {
-        Value *next_pc_v = this->builder.CreateSExtOrTrunc(this->gen_const(traits<ARCH>::XLEN, pc.val),
+        return fmt::format("*((uint64_t*){}) = {}\n", get_reg_ptr(reg_num), next_pc_v.val);
-                                                           this->get_type(traits<ARCH>::XLEN));
-        this->builder.CreateStore(next_pc_v, get_reg_ptr(reg_num), true);
     }
 
     // some compile time constants
@@ -328,6 +325,33 @@ private:
     
     /* instruction 1: AUIPC */
     compile_ret_t __auipc(virt_addr_t& pc, code_word_t instr, std::ostringstream& os){
+        os<<fmt::format("AUIPC-{:%08x}:\n", pc.val);
+
+        os<<this->gen_sync(PRE_SYNC, 1);
+
+        uint8_t rd = ((bit_sub<7,5>(instr)));
+        int32_t imm = signextend<int32_t,32>((bit_sub<12,20>(instr) << 12));
+        if(this->disass_enabled){
+            /* generate console output when executing the command */
+            auto mnemonic = fmt::format(
+                "{mnemonic:10} {rd}, {imm:#08x}", fmt::arg("mnemonic", "auipc"),
+                fmt::arg("rd", name(rd)), fmt::arg("imm", imm));
+            this->builder.CreateCall(this->mod->getFunction("print_disass"), args);
+            os<<fmt::format("\tprint_disass((void*){}, {}, {});\n", this->core_ptr, pc.val, mnemonic);
+        }
+
+        Value* cur_pc_val = this->gen_const(64, pc.val);
+        pc=pc+4;
+
+        if(rd != 0){
+            os<<fmt::format("uint64_t res = {} + {};\n", cur_pc_val, imm);
+            os<<fmt::format("*((uint64_t*){}) = ret\n", get_reg_ptr(rd + traits<ARCH>::X0));
+        }
+        os<<this->gen_set_pc(pc, traits<ARCH>::NEXT_PC);
+        os<<this->gen_sync(POST_SYNC, 1);
+        os<<this->gen_trap_check(bb);
+        return std::make_tuple(CONT);
+
     }
     
     /* instruction 2: JAL */
@@ -684,12 +708,9 @@ template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(BasicBlock *trap_
     this->builder.CreateRet(trap_addr_val);
 }
 
-template <typename ARCH> inline void vm_impl<ARCH>::gen_trap_check(BasicBlock *bb) {
+template <typename ARCH> inline std::string vm_impl<ARCH>::gen_trap_check(BasicBlock *bb) {
-    auto *v = this->builder.CreateLoad(get_reg_ptr(arch::traits<ARCH>::TRAP_STATE), true);
+    return fmt::format("if(*(uint32_t){})!=0) goto trap_blk;\n", get_reg_ptr(arch::traits<ARCH>::TRAP_STATE));
-    this->gen_cond_branch(this->builder.CreateICmp(
+
-                              ICmpInst::ICMP_EQ, v,
-                              ConstantInt::get(getContext(), APInt(v->getType()->getIntegerBitWidth(), 0))),
-                          bb, this->trap_blk, 1);
 }
 } // namespace rv64i