Vortex 2.0 changes:

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

runtime/opae/driver.cpp

@@ -0,0 +1,93 @@
+// 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 "driver.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <linux/limits.h>
+#include <dlfcn.h>
+#include <string>
+#include <vector>
+#include <sstream>
+
+#ifdef OPAESIM
+#define DEFAULT_OPAE_DRV_PATHS "libopae-c-sim.so"
+#elif ASESIM
+#define DEFAULT_OPAE_DRV_PATHS "libopae-c-ase.so"
+#else
+#define DEFAULT_OPAE_DRV_PATHS "libopae-c.so"
+#endif
+
+#define SET_API(func) \
+	opae_drv_funcs->func = (pfn_##func)dlsym(dl_handle, #func); \
+	if (opae_drv_funcs->func == nullptr) { \
+        printf("dlsym failed: %s\n", dlerror()); \
+		dlclose(dl_handle); \
+        return -1; \
+	}
+
+void* dl_handle = nullptr;
+
+int drv_init(opae_drv_api_t* opae_drv_funcs) {
+    if (opae_drv_funcs == nullptr)
+        return -1;
+
+    const char* api_path_s = getenv("OPAE_DRV_PATHS");
+    if (api_path_s == nullptr || api_path_s[0] == '\0') {
+        api_path_s = DEFAULT_OPAE_DRV_PATHS;
+    }
+
+    std::vector<std::string> api_paths;
+    {
+        std::stringstream ss(api_path_s);
+        while (ss.good()) {
+            std::string path;
+            getline(ss, path, ',');
+            api_paths.push_back(path);
+        }
+    }
+    
+    for (auto& api_path : api_paths) {
+		dl_handle = dlopen(api_path.c_str(), RTLD_LAZY | RTLD_LOCAL);
+		if (dl_handle)
+			break;
+	}
+    if (dl_handle == nullptr) {
+        printf("dlopen failed: %s\n", dlerror());
+        return -1;
+    }
+
+	SET_API (fpgaGetProperties);
+	SET_API (fpgaPropertiesSetObjectType);
+	SET_API (fpgaPropertiesSetGUID);
+	SET_API (fpgaDestroyProperties);
+    SET_API (fpgaDestroyToken);
+    SET_API (fpgaPropertiesGetLocalMemorySize);
+	SET_API (fpgaEnumerate);	
+	SET_API (fpgaOpen);
+	SET_API (fpgaClose);
+	SET_API (fpgaPrepareBuffer);
+	SET_API (fpgaReleaseBuffer);
+	SET_API (fpgaGetIOAddress);
+	SET_API (fpgaWriteMMIO64);
+	SET_API (fpgaReadMMIO64);
+	SET_API (fpgaErrStr);    
+
+    return 0;
+}
+
+void drv_close() {
+    dlclose(dl_handle);
+}