Vortex 2.0 changes:

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

sim/common/util.cpp

@@ -1,3 +1,16 @@
+// 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 "util.h"
 #include <string.h>
 
@@ -7,4 +20,20 @@ const char* fileExtension(const char* filepath) {
     if (ext == NULL || ext == filepath) 
       return "";
     return ext + 1;
+}
+
+void* aligned_malloc(size_t size, size_t alignment) {
+  // reserve margin for alignment and storing of unaligned address
+  assert((alignment & (alignment - 1)) == 0);   // Power of 2 alignment.
+  size_t margin = (alignment-1) + sizeof(void*);
+  void *unaligned_addr = malloc(size + margin);
+  void **aligned_addr = (void**)((uintptr_t)(((uint8_t*)unaligned_addr) + margin) & ~(alignment-1));
+  aligned_addr[-1] = unaligned_addr;
+  return aligned_addr;
+}
+
+void aligned_free(void *ptr) {
+  // retreive the stored unaligned address and use it to free the allocation
+  void* unaligned_addr = ((void**)ptr)[-1];
+  free(unaligned_addr);
 }