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authorjaseg <git-bigdata-wsl-arch@jaseg.de>2020-10-12 20:15:41 +0200
committerjaseg <git-bigdata-wsl-arch@jaseg.de>2020-10-12 20:15:41 +0200
commite16ec19e3a445c1156c990ed71628fb183332be9 (patch)
treeaf95b48f15f35665342f5aba76625df3849927d2 /tools/mapparse.py
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Diffstat (limited to 'tools/mapparse.py')
-rw-r--r--tools/mapparse.py129
1 files changed, 129 insertions, 0 deletions
diff --git a/tools/mapparse.py b/tools/mapparse.py
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+++ b/tools/mapparse.py
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+
+import re
+from collections import defaultdict, namedtuple
+
+Section = namedtuple('Section', ['name', 'offset', 'objects'])
+ObjectEntry = namedtuple('ObjectEntry', ['filename', 'object', 'offset', 'size'])
+FileEntry = namedtuple('FileEntry', ['section', 'object', 'offset', 'length'])
+
+class Memory:
+ def __init__(self, name, origin, length, attrs=''):
+ self.name, self.origin, self.length, self.attrs = name, origin, length, attrs
+ self.sections = {}
+ self.files = defaultdict(lambda: [])
+ self.totals = defaultdict(lambda: 0)
+
+ def add_toplevel(self, name, offx, length):
+ self.sections[name] = Section(offx, length, [])
+
+ def add_obj(self, name, offx, length, fn, obj):
+ base_section, sep, subsec = name[1:].partition('.')
+ base_section = '.'+base_section
+ if base_section in self.sections:
+ sec = secname, secoffx, secobjs = self.sections[base_section]
+ secobjs.append(ObjectEntry(fn, obj, offx, length))
+ else:
+ sec = None
+ self.files[fn].append(FileEntry(sec, obj, offx, length))
+ self.totals[fn] += length
+
+class MapFile:
+ def __init__(self, s):
+ self._lines = s.splitlines()
+ self.memcfg = {}
+ self.defaultmem = Memory('default', 0, 0xffffffffffffffff)
+ self._parse()
+
+ def __getitem__(self, offx_or_name):
+ ''' Lookup a memory area by name or address '''
+ if offx_or_name in self.memcfg:
+ return self.memcfg[offx_or_name]
+
+ elif isinstance(offx_or_name, int):
+ for mem in self.memcfg.values():
+ if mem.origin <= offx_or_name < mem.origin+mem.length:
+ return mem
+ else:
+ return self.defaultmem
+
+ raise ValueError('Invalid argument type for indexing')
+
+ def _skip(self, regex):
+ matcher = re.compile(regex)
+ for l in self:
+ if matcher.match(l):
+ break
+
+ def __iter__(self):
+ while self._lines:
+ yield self._lines.pop(0)
+
+ def _parse(self):
+ self._skip('^Memory Configuration')
+
+ # Parse memory segmentation info
+ self._skip('^Name')
+ for l in self:
+ if not l:
+ break
+ name, origin, length, *attrs = l.split()
+ if not name.startswith('*'):
+ self.memcfg[name] = Memory(name, int(origin, 16), int(length, 16), attrs[0] if attrs else '')
+
+ # Parse section information
+ toplevel_m = re.compile('^(\.[a-zA-Z0-9_.]+)\s+(0x[0-9a-fA-F]+)\s+(0x[0-9a-fA-F]+)')
+ secondlevel_m = re.compile('^ (\.[a-zA-Z0-9_.]+)\s+(0x[0-9a-fA-F]+)\s+(0x[0-9a-fA-F]+)\s+(.*)$')
+ secondlevel_linebreak_m = re.compile('^ (\.[a-zA-Z0-9_.]+)\n')
+ filelike = re.compile('^(/?[^()]*\.[a-zA-Z0-9-_]+)(\(.*\))?')
+ linebreak_section = None
+ for l in self:
+ # Toplevel section
+ match = toplevel_m.match(l)
+ if match:
+ name, offx, length = match.groups()
+ offx, length = int(offx, 16), int(length, 16)
+ self[offx].add_toplevel(name, offx, length)
+
+ match = secondlevel_linebreak_m.match(l)
+ if match:
+ linebreak_section, = match.groups()
+ continue
+
+ if linebreak_section:
+ l = ' {} {}'.format(linebreak_section, l)
+ linebreak_section = None
+
+ # Second-level section
+ match = secondlevel_m.match(l)
+ if match:
+ name, offx, length, misc = match.groups()
+ match = filelike.match(misc)
+ if match:
+ fn, obj = match.groups()
+ obj = obj.strip('()') if obj else None
+ offx, length = int(offx, 16), int(length, 16)
+ self[offx].add_obj(name, offx, length, fn, obj)
+
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser(description='Parser GCC map file')
+ parser.add_argument('mapfile', type=argparse.FileType('r'), help='The GCC .map file to parse')
+ parser.add_argument('-m', '--memory', type=str, help='The memory segments to print, comma-separated')
+ args = parser.parse_args()
+ mf = MapFile(args.mapfile.read())
+ args.mapfile.close()
+
+ mems = args.memory.split(',') if args.memory else mf.memcfg.keys()
+
+ for name in mems:
+ mem = mf.memcfg[name]
+ print('Symbols by file for memory', name)
+ for tot, fn in reversed(sorted( (tot, fn) for fn, tot in mem.totals.items() )):
+ print(' {:>8} {}'.format(tot, fn))
+ for length, offx, sec, obj in reversed(sorted(( (length, offx, sec, obj) for sec, obj, offx, length in
+ mem.files[fn] ), key=lambda e: e[0] )):
+ name = sec.name if sec else None
+ print(' {:>8} {:>#08x} {}'.format(length, offx, obj))
+ #print('{:>16} 0x{:016x} 0x{:016x} ({:>24}) {}'.format(name, origin, length, length, attrs))
+