New wrb GDB monitor command, for writing to individual bit fields of target registers

src/Targets/TargetBitFieldDescriptor.cpp

@@ -1,5 +1,9 @@
 #include "TargetBitFieldDescriptor.hpp"
 
+#include <bitset>
+#include <limits>
+#include <numeric>
+
 namespace Targets
 {
     TargetBitFieldDescriptor::TargetBitFieldDescriptor(
@@ -14,6 +18,21 @@ namespace Targets
         , description(description)
     {}
 
+    std::size_t TargetBitFieldDescriptor::width() const {
+        const auto maskBitset = std::bitset<std::numeric_limits<decltype(TargetBitFieldDescriptor::mask)>::digits>{
+            this->mask
+        };
+
+        auto width = std::size_t{0};
+        for (auto maskIndex = std::size_t{0}; maskIndex < maskBitset.size(); ++maskIndex) {
+            if (maskBitset[maskIndex]) {
+                ++width;
+            }
+        }
+
+        return width;
+    }
+
     TargetBitFieldDescriptor TargetBitFieldDescriptor::clone() const {
         return {*this};
     }