Vortex 2.0 changes:

+ Microarchitecture optimizations
+ 64-bit support
+ Xilinx FPGA support
+ LLVM-16 support
+ Refactoring and quality control fixes

runtime/stub/Makefile

@@ -0,0 +1,19 @@
+CXXFLAGS += -std=c++11 -O2 -Wall -Wextra -pedantic -Wfatal-errors
+
+CXXFLAGS += -I../include -I../../runtime -I../../hw -I../../sim/common
+
+CXXFLAGS += -fPIC
+
+LDFLAGS += -shared -pthread
+
+SRCS = vortex.cpp ../common/utils.cpp
+
+PROJECT = libvortex.so
+
+all: $(PROJECT)
+
+$(PROJECT): $(SRCS) 
+	$(CXX) $(CXXFLAGS) $^ $(LDFLAGS) -o $@
+
+clean:
+	rm -rf $(PROJECT) obj_dir

runtime/stub/vortex.cpp

@@ -0,0 +1,58 @@
+// Copyright © 2019-2023
+// 
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+// 
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <vortex.h>
+
+extern int vx_dev_open(vx_device_h* /*hdevice*/) {
+    return -1;
+}
+
+extern int vx_dev_close(vx_device_h /*hdevice*/) {
+    return -1;
+}
+
+extern int vx_dev_caps(vx_device_h /*hdevice*/, uint32_t /*caps_id*/, uint64_t* /*value*/) {
+    return -1;
+}
+
+extern int vx_mem_alloc(vx_device_h /*hdevice*/, uint64_t /*size*/, int /*type*/, uint64_t* /*dev_addr*/) {
+    return -1;
+}
+
+extern int vx_mem_free(vx_device_h /*hdevice*/, uint64_t /*dev_addr*/) {
+    return -1;
+}
+
+extern int vx_mem_info(vx_device_h /*hdevice*/, int /*type*/, uint64_t* /*mem_free*/, uint64_t* /*mem_used*/) {
+    return 0;
+}
+
+extern int vx_copy_to_dev(vx_device_h /*hdevice*/, uint64_t /*dev_addr*/, const void* /*host_ptr*/, uint64_t /*size*/) {
+    return -1;
+}
+
+extern int vx_copy_from_dev(vx_device_h /*hdevice*/, void* /*host_ptr*/, uint64_t /*dev_addr*/, uint64_t /*size*/) {
+     return -1;
+}
+
+extern int vx_start(vx_device_h /*hdevice*/) {
+    return -1;
+}
+
+extern int vx_ready_wait(vx_device_h /*hdevice*/, uint64_t /*timeout*/) {
+    return -1;
+}
+
+extern int vx_dcr_write(vx_device_h /*hdevice*/, uint32_t /*addr*/, uint64_t /*value*/) {
+    return -1;
+}