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165 lines
4.4 KiB
165 lines
4.4 KiB
8 years ago
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#!/usr/bin/env python2
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#
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# Generate a size report from a Duktape library / executable.
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# Write out useful information about function sizes in a variety
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# of forms.
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#
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import os
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import sys
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import re
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import subprocess
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#000000000040d200 <duk_to_hstring>:
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# 40d200: 55 push %rbp
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# 40d201: 89 f5 mov %esi,%ebp
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re_funcstart = re.compile(r'^[0-9a-fA-F]+\s<(.*?)>:$')
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re_codeline = re.compile(r'^\s*([0-9a-fA-F]+):\s+((?:[0-9a-fA-F][0-9a-fA-F] )*[0-9a-fA-F][0-9a-fA-F])\s+(.*?)\s*$')
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def objdump(filename):
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proc = subprocess.Popen(['objdump', '-D', filename], stdout=subprocess.PIPE)
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curr_func = None
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func_start = None
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func_end = None
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ret = {}
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def storeFunc():
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if curr_func is None or func_start is None or func_end is None:
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return
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ret[curr_func] = {
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'name': curr_func,
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'start': func_start,
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'end': func_end, # exclusive
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'length': func_end - func_start
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}
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for line in proc.stdout:
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line = line.strip()
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m = re_funcstart.match(line)
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if m is not None:
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if curr_func is not None:
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storeFunc()
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curr_func = m.group(1)
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func_start = None
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func_end = None
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m = re_codeline.match(line)
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if m is not None:
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func_addr = long(m.group(1), 16)
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func_bytes = m.group(2)
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func_nbytes = len(func_bytes.split(' '))
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func_instr = m.group(3)
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if func_start is None:
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func_start = func_addr
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func_end = func_addr + func_nbytes
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storeFunc()
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return ret
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def filterFuncs(funcs):
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todo = [] # avoid mutation while iterating
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def accept(fun):
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n = fun['name']
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if n in [ '.comment',
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'.dynstr',
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'.dynsym',
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'.eh_frame_hdr',
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'.interp',
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'.rela.dyn',
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'.rela.plt',
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'_DYNAMIC',
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'_GLOBAL_OFFSET_TABLE_',
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'_IO_stdin_used',
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'__CTOR_LIST__',
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'__DTOR_LIST__',
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'_fini',
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'_init',
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'_start',
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'' ]:
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return False
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for pfx in [ '.debug', '.gnu', '.note',
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'__FRAME_', '__' ]:
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if n.startswith(pfx):
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return False
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return True
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for k in funcs.keys():
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if not accept(funcs[k]):
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todo.append(k)
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for k in todo:
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del funcs[k]
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def main():
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funcs = objdump(sys.argv[1])
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filterFuncs(funcs)
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funcs_keys = funcs.keys()
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funcs_keys.sort()
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combined_size_all = 0
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combined_size_duk = 0
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for k in funcs_keys:
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fun = funcs[k]
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combined_size_all += fun['length']
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if fun['name'].startswith('duk_'):
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combined_size_duk += fun['length']
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f = sys.stdout
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f.write('<html>')
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f.write('<head>')
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f.write('<title>Size dump for %s</title>' % sys.argv[1])
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f.write("""\
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<style type="text/css">
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tr:nth-child(2n) {
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background: #eeeeee;
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}
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tr:nth-child(2n+1) {
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background: #dddddd;
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}
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</style>
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""")
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f.write('</head>')
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f.write('<body>')
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f.write('<h1>Summary</h1>')
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f.write('<table>')
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f.write('<tr><td>Entries</td><td>%d</td></tr>' % len(funcs_keys))
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f.write('<tr><td>Combined size (all)</td><td>%d</td></tr>' % combined_size_all)
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f.write('<tr><td>Combined size (duk_*)</td><td>%d</td></tr>' % combined_size_duk)
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f.write('</table>')
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f.write('<h1>Sorted by function name</h1>')
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f.write('<table>')
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f.write('<tr><th>Name</th><th>Bytes</th></tr>')
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funcs_keys = funcs.keys()
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funcs_keys.sort()
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for k in funcs_keys:
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fun = funcs[k]
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f.write('<tr><td>%s</td><td>%d</td></tr>' % (fun['name'], fun['length']))
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f.write('</table>')
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f.write('<h1>Sorted by size</h1>')
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f.write('<table>')
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f.write('<tr><th>Name</th><th>Bytes</th></tr>')
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funcs_keys = funcs.keys()
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def cmpSize(a,b):
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return cmp(funcs[a]['length'], funcs[b]['length'])
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funcs_keys.sort(cmp=cmpSize)
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for k in funcs_keys:
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fun = funcs[k]
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f.write('<tr><td>%s</td><td>%d</td></tr>' % (fun['name'], fun['length']))
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f.write('</table>')
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f.write('</body>')
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f.write('</html>')
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if __name__ == '__main__':
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main()
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