Add HULK header; map virtual memory for HULK bss section

Rsconscript

@@ -19,15 +19,16 @@ KFONT_SIZE = 15
 
 class HulkBinObj < Builder
   def run(options)
+    FileUtils.mkdir_p(File.dirname(@target))
     File.write(@target, <<EOF)
 .section ".rodata"
 .balign 4096
-.global hulk_start
-hulk_start:
+.global hulk_bin_start
+hulk_bin_start:
 .incbin "#{@sources.first}"
 .balign 4096
-.global hulk_end
-hulk_end:
+.global hulk_bin_end
+hulk_bin_end:
 EOF
     unless @cache.up_to_date?(@target, nil, @sources, @env)
       print_run_message("Creating HULK binary object <target>#{@target}<reset>", nil)
@@ -86,6 +87,11 @@ hulk_env = env "hulk", use: %w[ldc2 x86_64-elf-gcc] do |env|
   env.Command("^/hulk.bin", "^/hulk.elf",
               "CMD" => %W[${OBJCOPY} -O binary ${_SOURCES} ${_TARGET}],
               "CMD_DESC" => "Convert ELF to binary:")
+  env.add_build_hook do |builder|
+    if builder.target.end_with?(".o")
+      env.Disassemble("#{builder.target}.txt", builder.target)
+    end
+  end
 end
 
 hello_env = env "hello", use: %w[ldc2 x86_64-w64-mingw32-gcc] do |env|