prettify linkmem

controller/fw/tools/linkmem.py

@@ -7,12 +7,13 @@ import re
 import subprocess
 from contextlib import contextmanager
 from collections import defaultdict
+import colorsys
 
 import cxxfilt
-
 from elftools.elf.elffile import ELFFile
 from elftools.elf.descriptions import describe_symbol_type
 import libarchive
+import matplotlib.cm
 
 @contextmanager
 def chdir(newdir):
@@ -117,10 +118,19 @@ def wrap(leader='', print=print, left='{', right='}'):
 def mangle(name):
     return re.sub('[^a-zA-Z0-9_]', '_', name)
 
+hexcolor = lambda r, g, b: f'#{int(r*255):02x}{int(g*255):02x}{int(b*255):02x}'
+def vhex(val):
+    r,g,b,_a = matplotlib.cm.viridis(1.0-val)
+    fc = hexcolor(r, g, b)  
+    h,s,v = colorsys.rgb_to_hsv(r,g,b)
+    cc = '#000000' if v > 0.8 else '#ffffff'
+    return fc, cc
+
 if __name__ == '__main__':
     import argparse
     parser = argparse.ArgumentParser()
     parser.add_argument('--trace-sections', type=str, action='append', default=[])
+    parser.add_argument('--trim-stubs', type=str, action='append', default=[])
     parser.add_argument('linker_binary')
     parser.add_argument('linker_args', nargs=argparse.REMAINDER)
     args = parser.parse_args()
@@ -129,6 +139,10 @@ if __name__ == '__main__':
     trace_sections_mangled = { sec.replace('.', '_') for sec in trace_sections }
     syms, refs, syms_out = trace_source_files(args.linker_binary, args.linker_args, trace_sections)
 
+    for name, (obj, size) in syms.items():
+        if path.basename(obj) in args.trim_stubs and size <= 8 and not refs.get(name):
+            syms_out.discard(name)
+
     clusters = defaultdict(lambda: [])
     for sym, (obj, size) in syms.items():
         clusters[obj].append((sym, size))
@@ -137,6 +151,9 @@ if __name__ == '__main__':
     for name, (obj, size) in syms.items():
         if size is not None:
             obj_size[obj] += size
+    max_size = max([ size for _obj, size in syms.values() if size is not None ])
+
+    max_osize = max(obj_size.values())
 
     with wrap('digraph G', print) as lvl1print:
         print('rankdir=LR;')
@@ -144,18 +161,20 @@ if __name__ == '__main__':
 
         for i, (obj, syms) in enumerate(clusters.items()):
             with wrap(f'subgraph cluster_{i}', lvl1print) as lvl2print:
-                lvl2print(f'label = "{obj} <{obj_size[obj]}>";')
+                fc, cc = vhex(obj_size[obj]/max_osize)
+                lvl2print(f'label = <<table border="0"><tr><td border="0" cellpadding="5" bgcolor="{fc}"><font face="carlito" color="{cc}"><b>{path.basename(obj)} ({obj_size[obj]}B)</b></font></td></tr></table>>;')
                 lvl2print()
                 for sym, size in syms:
                     if sym in syms_out:
-                        lvl2print(f'{mangle(sym)}[label = "{sym} <{size}>"];')
+                        fc, cc = vhex(size/max_size)
+                        lvl2print(f'{mangle(sym)}[label = "{sym} ({size}B)", style="rounded,filled", shape="box", fillcolor="{fc}", fontname="carlito", fontcolor="{cc}" color=None];')
             lvl1print()
 
         for start, ends in refs.items():
             for end in ends:
                 if end and (start in syms_out or start in trace_sections_mangled) and end in syms_out:
-                    lvl1print(f'{mangle(start)} -> {mangle(end)};')
+                    lvl1print(f'{mangle(start)} -> {mangle(end)} [style="bold", color="#333333"];')
 
         for sec in trace_sections:
-            lvl1print(f'{sec.replace(".", "_")} [label = "section {sec}"];')
+            lvl1print(f'{sec.replace(".", "_")} [label = "section {sec}", shape="box", style="filled,bold"];')