Wrote memory map in C, removed C++ code

src/memorymap.c

@@ -0,0 +1,131 @@
+#include "memorymap.h"
+#include <stdbool.h>
+
+int compare_regions(struct memory_region_t *lhs, struct memory_region_t *rhs)
+{
+    if(lhs->location == rhs->location)
+    {
+        return lhs->size - rhs->size;
+    }
+    else
+    {
+        return lhs->location - rhs->location;
+    }
+}
+
+bool region_overlaps(struct memory_region_t *lhs, struct memory_region_t *rhs)
+{
+    if(rhs->location < lhs->location)
+    {
+        return rhs->location + rhs->size > lhs->location;
+    }
+    return rhs->location < lhs->location + lhs->size;
+}
+
+bool region_contains(struct memory_region_t *lhs, struct memory_region_t *rhs)
+{
+    return (rhs->location >= lhs->location) &&
+        (rhs->location + rhs->size <= lhs->location + lhs->size);
+}
+
+void insert_map_entry(struct memory_map_t *map, physaddr_t location, size_t size, unsigned int type)
+{
+    struct memory_region_t new_region = {.location = location, .size = size, .type = type};
+    unsigned int i = 0;
+    while(i < map->size)
+    {
+        if(compare_regions(&new_region, &map->array[i]) < 0)
+        {
+            struct memory_region_t buffer = new_region;
+            new_region = map->array[i];
+            map->array[i] = buffer;
+        }
+        i++;
+    }
+    map->array[i] = new_region;
+    map->size++;
+}
+
+void remove_map_entry(struct memory_map_t *map, int index)
+{
+    if(index >= 0 && index < map->size)
+    {
+        for(int i = index; i < map->size - 1; i++)
+        {
+            map->array[i] = map->array[i + 1];
+        }
+        map->size--;
+    }
+}
+
+int trim_map(struct memory_map_t *map, int index)
+{
+    if(index + 1 >= map->size)
+    {
+        return -1;
+    }
+    struct memory_region_t left = map->array[index];
+    struct memory_region_t right = map->array[index + 1];
+    if(region_overlaps(&left, &right))
+    {
+        if(left.type == right.type)
+        {
+            left.size = (right.location + right.size > left.location + left.size ? right.location + right.size : left.location + left.size) - left.location;
+            remove_map_entry(map, index + 1);
+            return index;
+        }
+        else if(left.type < right.type)
+        {
+            if(region_contains(&right, &left))
+            {
+                remove_map_entry(map, index);
+                return index;
+            }
+            else if(left.location + left.size <= right.location + right.size)
+            {
+                left.size = (right.location > left.location) ? right.location - left.location : 0;
+                return index + 1;
+            }
+            else
+            {
+                struct memory_region_t new_right = {.location = right.location + right.size, .size = (left.location + left.size) - (right.location + right.size), .type = left.type};
+                left.size = (right.location > left.location) ? right.location - left.location : 0;
+                if(left.size == 0)
+                    remove_map_entry(map, index);
+                insert_map_entry(map, new_right.location, new_right.size, new_right.type);
+                return index + 2;
+            }
+        }
+        else
+        {
+            if(region_contains(&left, &right))
+            {
+                remove_map_entry(map, index + 1);
+                return index;
+            }
+            else
+            {
+                right.size = (right.location + right.size) - (left.location + left.size);
+                right.location = left.location + left.size;
+                return index + 1;
+            }
+        }
+    }
+    else if((left.location + left.size == right.location) && left.type == right.type)
+    {
+        left.size = right.location + right.size - left.location;
+        remove_map_entry(map, index + 1);
+        return index;
+    }
+    return index + 1;
+}
+
+void insert_region(struct memory_map_t *map, physaddr_t location, size_t size, unsigned int type)
+{
+    insert_map_entry(map, location, size, type);
+    unsigned int i = 0;
+    while(i >= 0)
+    {
+        i = trim_map(map, i);
+    }
+}