add TCC backend

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

@@ -260,13 +260,13 @@ vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt,
 
 template <typename ARCH> void vm_impl<ARCH>::gen_raise_trap(tu_builder& tu, uint16_t trap_id, uint16_t cause) {
     tu("  *trap_state = {:#x};", 0x80 << 24 | (cause << 16) | trap_id);
-    tu.create_store(tu.gen_const(32, std::numeric_limits<uint32_t>::max()),traits<ARCH>::LAST_BRANCH);
+    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(tu_builder& tu, unsigned lvl) {
     tu("leave_trap(core_ptr, {});", lvl);
-    tu.create_store(tu.create_read_mem(traits<ARCH>::CSR, (lvl << 8) + 0x41, traits<ARCH>::XLEN / 8),traits<ARCH>::NEXT_PC);
-    tu.create_store(tu.gen_const(32, std::numeric_limits<uint32_t>::max()),traits<ARCH>::LAST_BRANCH);
+    tu.store(tu.read_mem(traits<ARCH>::CSR, (lvl << 8) + 0x41, traits<ARCH>::XLEN),traits<ARCH>::NEXT_PC);
+    tu.store(tu.constant(std::numeric_limits<uint32_t>::max(), 32),traits<ARCH>::LAST_BRANCH);
 }
 
 template <typename ARCH> void vm_impl<ARCH>::gen_wait(tu_builder& tu, unsigned type) {
@@ -275,7 +275,7 @@ template <typename ARCH> void vm_impl<ARCH>::gen_wait(tu_builder& tu, unsigned t
 template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(tu_builder& tu) {
     tu("trap_entry:");
     tu("enter_trap(core_ptr, *trap_state, *pc);");
-    tu.create_store(tu.gen_const(32, std::numeric_limits<uint32_t>::max()),traits<ARCH>::LAST_BRANCH);
+    tu.store(tu.constant(std::numeric_limits<uint32_t>::max(),32),traits<ARCH>::LAST_BRANCH);
     tu("return *next_pc;");
 }
 

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 0x" << std::hex << 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 0x" << std::hex << addr;
-    }
+   }
 #endif
     try {
         switch (space) {
@@ -1318,7 +1320,7 @@ template <typename BASE> uint64_t riscv_hart_msu_vp<BASE>::enter_trap(uint64_t f
     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();

src/main.cpp

@@ -63,6 +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();
@@ -82,6 +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;
@@ -105,9 +108,12 @@ int main(int argc, char *argv[]) {
         std::unique_ptr<iss::arch_if> cpu{nullptr};
         std::string isa_opt(clim["isa"].as<std::string>());
         iss::arch::mnrv32* lcpu = new iss::arch::riscv_hart_msu_vp<iss::arch::mnrv32>();
-        //vm = iss::interp::create(lcpu, clim["gdb-port"].as<unsigned>());
-        //vm = iss::llvm::create(lcpu, clim["gdb-port"].as<unsigned>());
-        vm = iss::tcc::create(lcpu, clim["gdb-port"].as<unsigned>());
+        if(clim["backend"].as<std::string>() == "interp")
+            vm = iss::interp::create(lcpu, clim["gdb-port"].as<unsigned>());
+        if(clim["backend"].as<std::string>() == "llvm")
+            vm = iss::llvm::create(lcpu, clim["gdb-port"].as<unsigned>());
+        if(clim["backend"].as<std::string>() == "tcc")
+            vm = iss::tcc::create(lcpu, clim["gdb-port"].as<unsigned>());
         cpu.reset(lcpu);
         if (clim.count("plugin")) {
             for (std::string opt_val : clim["plugin"].as<std::vector<std::string>>()) {
@@ -135,10 +141,10 @@ 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;
             }
         }