Vortex 2.0 changes:

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

sim/common/stringutil.h

@@ -0,0 +1,78 @@
+// 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.
+
+#pragma once
+
+#include <iostream>
+#include  <iomanip>
+
+class ByteStream : public std::istream {
+public:
+  ByteStream(const void *buf, std::size_t size) : buf_(buf), size_(size) {}
+
+  friend std::ostream& operator<<(std::ostream& os, const ByteStream& obj) {
+    auto oldflags = os.flags();
+    auto oldwidth = os.width();
+    auto oldfill  = os.fill();
+    for (std::size_t i = 0, n = obj.size_; i < n; ++i) {
+      int byte = *((uint8_t*)obj.buf_ + (n - 1 - i));
+      os << std::hex << std::setw(2) << std::setfill('0') << byte;
+    }
+    os.fill(oldfill);
+    os.width(oldwidth);
+    os.flags(oldflags);
+    return os;
+  }
+
+private:
+  const void *buf_;
+  std::size_t size_;
+};
+
+class IndentStream : public std::streambuf {
+public:
+  explicit IndentStream(std::streambuf* dest, int indent = 4)
+    : dest_(dest)
+    , isBeginLine_(true)
+    , indent_(indent, ' ')
+    , owner_(nullptr)
+  {}
+  
+  explicit IndentStream(std::ostream& dest, int indent = 4)
+    : dest_(dest.rdbuf())
+    , isBeginLine_(true)
+    , indent_(indent, ' ')
+    , owner_(&dest) {
+      owner_->rdbuf(this);
+  }
+
+  virtual ~IndentStream() {
+    if (owner_)
+        owner_->rdbuf(dest_);
+  }
+
+protected:
+  virtual int overflow(int ch) {
+    if (isBeginLine_ && ch != '\n') {
+      dest_->sputn(indent_.data(), indent_.size());
+    }
+    isBeginLine_ = ch == '\n';
+    return dest_->sputc(ch);
+  }
+
+private:
+  std::streambuf* dest_;
+  bool            isBeginLine_;
+  std::string     indent_;
+  std::ostream*   owner_;
+};