diff --git a/.gitignore b/.gitignore
index bd79c043b6..b7d17125ab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,7 @@ venv/
 .DS_Store
 ctx.c
 expected/
+docs/
 
 # Assets
 assets
diff --git a/Doxyfile b/Doxyfile
new file mode 100644
index 0000000000..a851835620
--- /dev/null
+++ b/Doxyfile
@@ -0,0 +1,112 @@
+# https://www.doxygen.nl/manual/config.html
+
+PROJECT_NAME           = "Paper Mario"
+PROJECT_NUMBER         =
+PROJECT_BRIEF          = "Decompilation of Paper Mario"
+PROJECT_LOGO           =
+
+OUTPUT_DIRECTORY       = docs
+CREATE_SUBDIRS         = NO
+ALLOW_UNICODE_NAMES    = YES
+
+OPTIMIZE_OUTPUT_FOR_C  = YES
+
+TYPEDEF_HIDES_STRUCT   = YES
+
+NUM_PROC_THREADS       = 0
+
+EXTRACT_ALL            = YES
+EXTRACT_STATIC         = YES
+HIDE_UNDOC_CLASSES     = NO
+HIDE_IN_BODY_DOCS      = YES
+SHOW_GROUPED_MEMB_INC  = YES
+
+FORCE_LOCAL_INCLUDES   = YES
+INLINE_INFO            = YES
+
+SORT_MEMBER_DOCS       = NO
+SORT_BRIEF_DOCS        = NO
+SORT_GROUP_NAMES       = NO
+
+GENERATE_TODOLIST      = NO
+GENERATE_TESTLIST      = NO
+GENERATE_BUGLIST       = YES
+GENERATE_DEPRECATEDLIST= NO
+
+DISABLE_INDEX          = YES
+GENERATE_TREEVIEW      = YES
+
+ENABLED_SECTIONS       =
+MAX_INITIALIZER_LINES  = 1
+
+SHOW_INCLUDE_FILES     = NO
+SHOW_USED_FILES        = YES
+SHOW_FILES             = YES
+SHOW_NAMESPACES        = NO
+
+QUIET                  = NO
+WARNINGS               = YES
+WARN_IF_UNDOCUMENTED   = NO
+WARN_IF_DOC_ERROR      = YES
+WARN_NO_PARAMDOC       = NO
+WARN_AS_ERROR          = YES
+WARN_FORMAT            = "$file:$line: $text"
+WARN_LOGFILE           =
+
+INPUT                  = README.md src include
+FILE_PATTERNS          = *.c *.h
+RECURSIVE              = YES
+EXCLUDE                = include/nu include/PR include/ultra64.h
+EXCLUDE_SYMLINKS       = NO
+EXCLUDE_PATTERNS       =
+EXCLUDE_SYMBOLS        =
+
+USE_MDFILE_AS_MAINPAGE = README.md
+
+SOURCE_BROWSER         = YES
+INLINE_SOURCES         = NO
+STRIP_CODE_COMMENTS    = YES
+REFERENCED_BY_RELATION = YES
+REFERENCES_RELATION    = YES
+REFERENCES_LINK_SOURCE = NO
+SOURCE_TOOLTIPS        = NO
+USE_HTAGS              = NO
+VERBATIM_HEADERS       = NO
+
+ALPHABETICAL_INDEX     = NO
+COLS_IN_ALPHA_INDEX    = 5
+IGNORE_PREFIX          =
+
+GENERATE_HTML          = YES
+HTML_OUTPUT            = doxygen
+HTML_HEADER            =
+HTML_FOOTER            =
+HTML_EXTRA_STYLESHEET  =
+HTML_EXTRA_FILES       =
+HTML_COLORSTYLE_HUE    = 220
+HTML_COLORSTYLE_SAT    = 100
+HTML_COLORSTYLE_GAMMA  = 80
+HTML_TIMESTAMP         = YES
+HTML_DYNAMIC_MENUS     = YES
+HTML_DYNAMIC_SECTIONS  = YES
+HTML_INDEX_NUM_ENTRIES = 100
+HTML_FORMULA_FORMAT    = svg
+
+USE_MATHJAX            = YES
+MATHJAX_FORMAT         = SVG
+
+SEARCHENGINE           = YES
+SERVER_BASED_SEARCH    = NO
+
+GENERATE_LATEX         = NO
+
+ENABLE_PREPROCESSING   = YES
+MACRO_EXPANSION        = YES
+EXPAND_ONLY_PREDEF     = YES
+PREDEFINED             = NON_MATCHING __attribute__((x))=
+EXPAND_AS_DEFINED      = INCLUDE_ASM
+SKIP_FUNCTION_MACROS   = YES
+
+SEARCH_INCLUDES        = YES
+INCLUDE_PATH           = include include/PR src
+INCLUDE_FILE_PATTERNS  =
diff --git a/install.sh b/install.sh
index cc7f568767..efbc4324cc 100755
--- a/install.sh
+++ b/install.sh
@@ -9,7 +9,7 @@ if command -v apt &> /dev/null; then
 
     if [[ $1 == "--extra" ]]; then
         echo "Installing extra"
-        sudo apt install -y clang-tidy astyle || exit 1
+        sudo apt install -y clang-tidy astyle doxygen || exit 1
         python3 -m pip install -U -r requirements_extra.txt || exit 1
     fi
 
@@ -50,7 +50,7 @@ if command -v pacman &> /dev/null; then
 
     if [[ $1 == "--extra" ]]; then
         echo "Installing extra"
-        sudo pacman -S --noconfirm --needed clang astyle || exit 1
+        sudo pacman -S --noconfirm --needed clang astyle doxygen || exit 1
         python3 -m pip install -U -r requirements_extra.txt || exit 1
     fi
 
@@ -85,7 +85,7 @@ if command -v zypper &> /dev/null; then
 
     if [[ $1 == "--extra" ]]; then
         echo "Installing extra"
-        sudo zypper -n install clang astyle || exit 1
+        sudo zypper -n install clang astyle doxygen || exit 1
         python3 -m pip install -U -r requirements_extra.txt || exit 1
     fi
 
@@ -141,7 +141,7 @@ if command -v apk &> /dev/null; then
 
     if [[ $1 == "--extra" ]]; then
         echo "Installing extra"
-        sudo apk add --no-cache clang-extra-tools astyle || exit 1
+        sudo apk add --no-cache clang-extra-tools astyle doxygen || exit 1
         python3 -m pip install -U -r requirements_extra.txt || exit 1
     fi