diff --git a/tools/python/split_data_regions.py b/tools/python/split_data_regions.py
index f7402639..96d6e935 100644
--- a/tools/python/split_data_regions.py
+++ b/tools/python/split_data_regions.py
@@ -8,10 +8,12 @@ from file_util import FileUtil
 DATA_FILE_PATH = 'data/dkr.data.s'
 GLABEL_REGEX = r'D_[0-9A-F]{8}'
 GLABEL_DEF_REGEX = r'glabel (%s)' % GLABEL_REGEX
+RODATA_START = 'D_800E49DC'  # i.e. the end of .data
+BSS_START = 'D_800E98D0'  # i.e. the end of .rodata
 # List of labels that are not used in the file they are defined in.
 # This throws off the splitter algorithm, so the troublesome ones
 # must be individually blacklisted for now.
-IGNORE_GLABELS = ['D_800E0001']
+IGNORE_GLABELS = ['D_800E0001', 'D_800E63E0', 'D_800E94D0']
 
 def _rom_offset(vaddr):
     """
@@ -26,11 +28,15 @@ def _rom_offset(vaddr):
 
 def _get_glabels():
     """
-    Returns all the glabel definitions in the data file.
+    Returns all the glabel definitions in the data file, split into .data,
+    .rodata, and .bss.
     """
     data_file = FileUtil.get_text_from_file(DATA_FILE_PATH)
     glabels = re.findall(GLABEL_DEF_REGEX, data_file)
-    return [glabel for glabel in glabels if glabel not in IGNORE_GLABELS]
+    glabels = [glabel for glabel in glabels if glabel not in IGNORE_GLABELS]
+    rodata_idx = glabels.index(RODATA_START)
+    bss_idx = glabels.index(BSS_START)
+    return glabels[:rodata_idx], glabels[rodata_idx:bss_idx], glabels[bss_idx:]
 
 def _get_file_offset(file, contents):
     """
@@ -108,21 +114,28 @@ def _split_glabel_files(glabel_usage, c_file_offsets):
     glabel_idx = 0
     for i in range(len(c_file_offsets)):
         file = c_file_offsets[i]
-        while glabel_usage[glabel_idx][1] < file[1]:
+        while glabel_idx < len(glabel_usage) and glabel_usage[glabel_idx][1] < file[1]:
             glabel_idx += 1
-        glabel = glabel_usage[glabel_idx]
-        glabel_name = glabel[0] if i < len(c_file_offsets) - 1 and glabel[1] < c_file_offsets[i + 1][1] else None
+        if glabel_idx < len(glabel_usage) and i < len(c_file_offsets) - 1:
+            glabel = glabel_usage[glabel_idx]
+            glabel_name = glabel[0] if glabel[1] < c_file_offsets[i + 1][1] else None
+        else:
+            glabel_name = None
         file_splits.append((file[0], file[1], glabel_name))
     return file_splits
 
 def main():
     FileUtil.set_working_dir_to_project_base()
-    glabels = _get_glabels()
-    usage, c_file_offsets = _log_glabel_usage(glabels)
-    filtered_usage = _filter_glabel_usage(usage)
-    file_splits = _split_glabel_files(filtered_usage, c_file_offsets)
-    for split in file_splits:
-        print('%s (%06X): %s' % split)
+    data_glabels, rodata_glabels, bss_glabels = _get_glabels()
+    for section in [('.data', data_glabels), ('.rodata', rodata_glabels), ('.bss', bss_glabels)]:
+        glabels = section[1]
+        usage, c_file_offsets = _log_glabel_usage(glabels)
+        filtered_usage = _filter_glabel_usage(usage)
+        file_splits = _split_glabel_files(filtered_usage, c_file_offsets)
+        print('File splits for %s:' % section[0])
+        for split in file_splits:
+            print('%s (%06X): %s' % split)
+        print()
 
 if __name__ == '__main__':
     main()