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import subprocess
from os import path
# Define the command and arguments
command = [
"objdump",
"--headers",
"--section=.text",
"user/usr/bin/s5fstest.exec"
]
class NewUserland(gdb.Command):
def __init__(self):
super(NewUserland, self).__init__("new-userland", gdb.COMMAND_USER)
def invoke(self, arg, from_tty):
directory = 'user/usr/bin/'
filename = directory + arg + '.exec'
if not path.exists(filename):
filename = 'user/bin/' + arg + '.exec'
if arg == 'init':
filename = 'user/sbin/init.exec'
command = f"objdump --headers --section='.text' {filename} | grep .text | awk '{{print $4}}'"
result = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, shell=True)
if result.returncode == 0:
print("VMA of the .text section:")
text_section = result.stdout.strip()
gdb.execute(f"add-symbol-file {filename} 0x{text_section}")
gdb.execute(f"break main")
else:
print("Command failed with error:")
print(result.stderr)
NewUserland()
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