mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-13 20:12:26 +00:00
175 lines
6.8 KiB
Python
Executable File
175 lines
6.8 KiB
Python
Executable File
#!/usr/bin/env python3
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import os
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import pathlib
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import subprocess
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import common
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from shell_helpers import LF
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class Main(common.BuildCliFunction):
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def __init__(self):
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super().__init__(
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description='''\
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Build gem5.
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https://github.com/cirosantilli/linux-kernel-module-cheat-regression#gem5-buildroot-setup
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'''
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)
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self.add_argument(
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'--regression-test',
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action='append',
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default=[],
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help='''\
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Build and run the given gem5 regression test.
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https://github.com/cirosantilli/linux-kernel-module-cheat-regression#gem5-unit-tests
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'''
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)
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self.add_argument(
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'--unit-test',
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action='append',
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default=[],
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help='''\
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Build and run the given unit test. Paths are relative to src/ without the .opt suffix.
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If given multiple times, runs multiple unit tests. Ignore --unit-tests.
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https://github.com/cirosantilli/linux-kernel-module-cheat-regression#gem5-unit-tests
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'''
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)
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self.add_argument(
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'--unit-tests',
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default=False,
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help='''\
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Build and run all the gem5 unit tests instead of the gem5 executable.
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https://github.com/cirosantilli/linux-kernel-module-cheat-regression#gem5-unit-tests
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'''
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)
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self.add_argument(
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'extra_scons_args',
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metavar='extra-scons-args',
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nargs='*',
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)
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def build(self):
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build_dir = self.get_build_dir()
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binaries_dir = os.path.join(self.env['gem5_system_dir'], 'binaries')
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disks_dir = os.path.join(self.env['gem5_system_dir'], 'disks')
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os.makedirs(binaries_dir, exist_ok=True)
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os.makedirs(disks_dir, exist_ok=True)
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if not os.path.exists(os.path.join(self.env['gem5_source_dir'], '.git')):
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if self.env['_args_given']['gem5_worktree']:
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self.sh.run_cmd([
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'git', LF,
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'-C', self.env['gem5_default_source_dir'], LF,
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'worktree', 'add', LF,
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'-b', os.path.join('wt', self.env['gem5_build_id']), LF,
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self.env['gem5_source_dir'], LF,
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])
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else:
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if not self.env['dry_run']:
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raise Exception('gem5 submodule not checked out')
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if self.env['verbose']:
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verbose = ['--verbose', LF]
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else:
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verbose = []
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if self.env['arch'] == 'x86_64':
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dummy_img_path = os.path.join(disks_dir, 'linux-bigswap2.img')
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with open(dummy_img_path, 'wb') as dummy_img_file:
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zeroes = b'\x00' * (2 ** 16)
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for i in range(2 ** 10):
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dummy_img_file.write(zeroes)
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self.sh.run_cmd(['mkswap', dummy_img_path, LF])
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with open(os.path.join(binaries_dir, 'x86_64-vmlinux-2.6.22.9'), 'w'):
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# This file must always be present, despite --kernel overriding that default and selecting the kernel.
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# I'm not even joking. No one has ever built x86 gem5 without the magic dist dir present.
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pass
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elif self.env['arch'] == 'arm' or self.env['arch'] == 'aarch64':
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gem5_system_source_dir = os.path.join(self.env['gem5_source_dir'], 'system')
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# dtb
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dt_source_dir = os.path.join(gem5_system_source_dir, 'arm', 'dt')
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dt_build_dir = os.path.join(self.env['gem5_system_dir'], 'arm', 'dt')
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self.sh.run_cmd(['make', '-C', dt_source_dir, LF])
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self.sh.copy_dir_if_update_non_recursive(
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srcdir=dt_source_dir,
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destdir=dt_build_dir,
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filter_ext='.dtb',
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)
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# Bootloader 32.
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bootloader32_dir = os.path.join(gem5_system_source_dir, 'arm', 'simple_bootloader')
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# TODO use the buildroot cross compiler here, and remove the dependencies from configure.
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self.sh.run_cmd([
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'make', LF,
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'-C', bootloader32_dir, LF,
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'CROSS_COMPILE=arm-linux-gnueabihf-', LF,
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])
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# bootloader
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self.sh.cp(os.path.join(bootloader32_dir, 'boot_emm.arm'), binaries_dir)
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# Bootloader 64.
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bootloader64_dir = os.path.join(gem5_system_source_dir, 'arm', 'aarch64_bootloader')
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# TODO cross_compile is ignored because the make does not use CC...
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self.sh.run_cmd(['make', '-C', bootloader64_dir, LF])
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self.sh.cp(os.path.join(bootloader64_dir, 'boot_emm.arm64'), binaries_dir)
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term_source_dir = os.path.join(self.env['gem5_source_dir'], 'util/term')
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m5term_build = os.path.join(term_source_dir, 'm5term')
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self.sh.run_cmd(['make', '-C', term_source_dir, LF])
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if os.path.exists(self.env['gem5_m5term']):
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# Otherwise self.sh.cp would fail with "Text file busy" if you
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# tried to rebuild while running m5term:
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# https://stackoverflow.com/questions/16764946/what-generates-the-text-file-busy-message-in-unix/52427512#52427512
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self.sh.rmrf(self.env['gem5_m5term'])
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self.sh.cp(m5term_build, self.env['gem5_m5term'])
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if self.env['unit_test']:
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targets = [self.get_gem5_target_path(self.env, test) for test in self.env['unit_test']]
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elif self.env['regression_test']:
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targets = [
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os.path.join(
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self.env['gem5_executable_dir'],
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'tests',
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self.env['gem5_build_type'],
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test
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)
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for test
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in self.env['regression_test']
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]
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elif self.env['unit_tests']:
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targets = [self.env['gem5_unit_test_target']]
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else:
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targets = [self.env['gem5_executable']]
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if self.env['clang']:
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extra_env = {
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'CC': 'clang',
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'CXX': 'clang++',
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}
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gold_linker_cmd = []
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else:
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extra_env = {}
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gold_linker_cmd = ['--gold-linker', LF,]
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exit_status = self.sh.run_cmd(
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(
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[
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'scons', LF,
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'-j', str(self.env['nproc']), LF,
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'--ignore-style', LF,
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] +
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gold_linker_cmd +
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verbose +
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[
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'SLICC_HTML=True', LF,
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] +
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self.sh.add_newlines(targets) +
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self.sh.add_newlines(self.env['extra_scons_args'])
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),
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cwd=self.env['gem5_source_dir'],
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extra_paths=[self.env['ccache_dir']],
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extra_env=extra_env,
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raise_on_failure = False,
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)
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return exit_status
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def get_build_dir(self):
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return self.env['gem5_build_dir']
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if __name__ == '__main__':
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Main().cli()
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