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proddy
@@ -26,79 +26,87 @@ import re
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import subprocess
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import sys
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RE_ELF_SECTION = re.compile(r"^\s*(?P<type>\w+)\s+(?P<offset>\w+)\s+(?P<virtaddr>\w+)\s+(?P<physaddr>\w+)\s+(?P<filesiz>\w+)\s+(?P<memsiz>\w+)\s+(?P<ndx>\w+)\s+")
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RE_ELF_SECTION = re.compile(
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r"^\s*(?P<type>\w+)\s+(?P<offset>\w+)\s+(?P<virtaddr>\w+)\s+(?P<physaddr>\w+)\s+(?P<filesiz>\w+)\s+(?P<memsiz>\w+)\s+(?P<ndx>\w+)\s+")
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Symbol = collections.namedtuple("Symbol", ["value", "size", "line"])
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RE_ELF_SYMBOL = re.compile(r"^(?P<before_value>\s*(?P<num>\w+):\s+)(?P<value>\w+)(?P<after_value>\s+(?P<size>\w+)\s+(?P<type>\w+)\s+(?P<bind>\w+)\s+(?P<visibility>\w+)\s+(?P<ndx>\w+)\s+(?P<name>\w+))")
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RE_ELF_SYMBOL = re.compile(
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r"^(?P<before_value>\s*(?P<num>\w+):\s+)(?P<value>\w+)(?P<after_value>\s+(?P<size>\w+)\s+(?P<type>\w+)\s+(?P<bind>\w+)\s+(?P<visibility>\w+)\s+(?P<ndx>\w+)\s+(?P<name>\w+))")
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def print_tls_size(fw_elf):
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tls_offset = None
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width = 8
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tls_offset = None
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width = 8
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lines = subprocess.run(["readelf", "-W", "--program-headers", fw_elf],
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check=True, universal_newlines=True, stdout=subprocess.PIPE
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).stdout.strip().split("\n")
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lines = subprocess.run(["readelf", "-W", "--program-headers", fw_elf],
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check=True, universal_newlines=True, stdout=subprocess.PIPE
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).stdout.strip().split("\n")
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for line in lines:
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match = RE_ELF_SECTION.match(line)
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if match:
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if tls_offset is None and match["type"] == "TLS":
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tls_offset = int(match["virtaddr"], 16)
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for line in lines:
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match = RE_ELF_SECTION.match(line)
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if match:
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if tls_offset is None and match["type"] == "TLS":
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tls_offset = int(match["virtaddr"], 16)
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header = True
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lines = subprocess.run(["readelf", "-W", "--syms", "--dyn-syms", fw_elf],
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check=True, universal_newlines=True, stdout=subprocess.PIPE
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).stdout.strip().split("\n")
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syms = set()
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header = True
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lines = subprocess.run(["readelf", "-W", "--syms", "--dyn-syms", fw_elf],
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check=True, universal_newlines=True, stdout=subprocess.PIPE
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).stdout.strip().split("\n")
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syms = set()
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for line in lines:
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match = RE_ELF_SYMBOL.match(line)
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if match:
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header = False
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for line in lines:
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match = RE_ELF_SYMBOL.match(line)
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if match:
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header = False
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if match["type"] == "TLS":
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syms.add(Symbol(int(match["value"], 16), int(match["size"]), line))
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width = len(match['value'])
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elif tls_offset is not None and (match["type"] == "NOTYPE" and match["bind"] == "GLOBAL"
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and match["visibility"] == "DEFAULT"
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and match["name"] in set(["_thread_local_start", "_thread_local_end"])
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):
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value = int(match["value"], 16) - tls_offset
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line = ("{1}{2:0{0}x}{3}").format(len(match['value']),
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match["before_value"], value, match["after_value"])
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syms.add(Symbol(value, int(match["size"]), line))
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if match["type"] == "TLS":
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syms.add(
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Symbol(int(match["value"], 16), int(match["size"]), line))
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width = len(match['value'])
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elif tls_offset is not None and (match["type"] == "NOTYPE" and match["bind"] == "GLOBAL"
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and match["visibility"] == "DEFAULT"
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and match["name"] in set(["_thread_local_start", "_thread_local_end"])
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):
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value = int(match["value"], 16) - tls_offset
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line = ("{1}{2:0{0}x}{3}").format(len(match['value']),
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match["before_value"], value, match["after_value"])
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syms.add(Symbol(value, int(match["size"]), line))
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elif header:
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print(line)
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elif header:
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print(line)
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if syms:
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syms = list(syms)
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syms.sort()
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size = (syms[-1].value + syms[-1].size) - syms[0].value
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else:
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size = 0
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if syms:
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syms = list(syms)
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syms.sort()
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size = (syms[-1].value + syms[-1].size) - syms[0].value
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else:
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size = 0
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value = syms[0].value
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for sym in syms:
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if sym.value > value:
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print("\t{1:0{0}x} {2:5d} TLS UNKNOWN".format(width, value, sym.value - value))
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print(sym.line)
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value = sym.value + sym.size
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value = syms[0].value
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for sym in syms:
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if sym.value > value:
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print("\t{1:0{0}x} {2:5d} TLS UNKNOWN".format(
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width, value, sym.value - value))
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print(sym.line)
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value = sym.value + sym.size
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print()
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print(f"Total Thread-Local Storage size: {size} bytes")
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print()
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print(f"Total Thread-Local Storage size: {size} bytes")
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def after_fw_elf(source, target, env):
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fw_elf = str(target[0])
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print_tls_size(fw_elf)
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fw_elf = str(target[0])
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print_tls_size(fw_elf)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description="Calculate size of Thread-Local Storage")
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parser.add_argument("fw_elf", metavar="ELF", type=str, help="Firmware ELF filename")
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parser = argparse.ArgumentParser(
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description="Calculate size of Thread-Local Storage")
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parser.add_argument("fw_elf", metavar="ELF", type=str,
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help="Firmware ELF filename")
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args = parser.parse_args()
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print_tls_size(**vars(args))
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args = parser.parse_args()
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print_tls_size(**vars(args))
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elif __name__ == "SCons.Script":
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Import("env")
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Import("env")
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env.AddPostAction("${BUILD_DIR}/${PROGNAME}.elf", after_fw_elf)
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env.AddPostAction("${BUILD_DIR}/${PROGNAME}.elf", after_fw_elf)
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