Initial commit

tools/linksize.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+
+def parse_linker_script(data):
+    pass
+
+def link(groups):
+    defined_symbols = {}
+    undefined_symbols = set()
+    for group, files in groups:
+        while True:
+            found_something = False
+
+            for fn in files:
+                symbols = load_symbols(fn)
+                for symbol in symbols:
+                    if symbol in defined_symbols:
+
+            if not group or not found_something:
+                break
+
+
+if __name__ == '__main__':
+
+    import argparse
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-T', '--script', type=str, help='Linker script to use')
+    parser.add_argument('-o', '--output', type=str, help='Output file to produce')
+    args, rest = parser.parse_known_intermixed_args()
+    print(rest)
+
+    addprefix = lambda *xs: [ prefix + opt for opt in xs for prefix in ('', '-Wl,') ]
+    START_GROUP = addprefix('-(', '--start-group')
+    END_GROUP = addprefix('-)', '--end-group')
+    GROUP_OPTS = [*START_GROUP, *END_GROUP]
+    input_files = [ arg for arg in rest if not arg.startswith('-') or arg in GROUP_OPTS ]
+
+    def input_file_iter(input_files):
+        group = False
+        files = []
+        for arg in input_files:
+            if arg in START_GROUP:
+                assert not group
+
+                if files:
+                    yield False, files # nested -Wl,--start-group
+                group, files = True, []
+
+            elif arg in END_GROUP:
+                assert group # missing -Wl,--start-group
+                if files:
+                    yield True, files
+                group, files = False, []
+
+            else:
+                files.append(arg)
+
+        assert not group # missing -Wl,--end-group
+        if files:
+            yield False, files
+
+
+