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LKMC v3.0

Browse Source 
This is a squash commit, the unsquashed development went through many
unstable phases which would break bisects. The unsquashed branch is:
https://github.com/cirosantilli/linux-kernel-module-cheat/tree/v3.0-unsquash

The main improvement of this release was to greatly generalize the testing system.

The key addition was cli_function.py, which allows scripts such as ./run to
be transparently called either from Python or from the command line.

New tests scripts were created using this improved framework: test-baremetal
and test-user-mode.

We were lazy to port some of less important tests to the new setup, TODO's were
added, and we need comes they will be fixed. Getting started is however sacred
as usual and should work.

Other changes include:

-   gem5: update to 7fa4c946386e7207ad5859e8ade0bbfc14000d91

-   run: --tmux-args implies --tmux

-   run: add --userland-args to make userland arguments across QEMU and gem5

    Get rid of --userland-before as a consequence.

-   bring initrd and initramfs back to life

-   build-userland: create --static to make build a bit easier

-   gem5: --gem5-worktree also set --gem5-build-id

-   remove --gem5, use --emulator gem5 everywhere

    Allow passing --emulator multiple times for transparent tests selection
    just like --arch.

-   test-userland: allow selecting just a few tests

-   linux: update to v4.20

-   buildroot: update to 2018.08

    The main motivation for this was to fix the build for Ubuntu 18.10, which
    has glibc 2.28, which broke the 2018.05 build at the m4-host package with:

        #error "Please port gnulib fseeko.c to your platform!

-   getvar --type input

-   failed xen attempt, refactor timer, failed svc attempt, aarch64 use gicv3

-   build-doc: exit 1 on error, add to release testing

-   build: add --apt option to make things easier on other distros

-   build-linux: --no-modules-install
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-01-22 00:00:00 +00:00
parent 3b0a343647
commit da900a579c
86 changed files with 5241 additions and 3543 deletions
Download Patch File Download Diff File Expand all files Collapse all files

121
build-gem5
View File

@@ -5,110 +5,105 @@ import pathlib
import subprocess
import common
from shell_helpers import LF
class Gem5Component(common.Component):
def add_parser_arguments(self, parser):
parser.add_argument(
class Main(common.BuildCliFunction):
def __init__(self):
super().__init__()
self.add_argument(
'extra_scons_args',
default=[],
metavar='extra-scons-args',
nargs='*'
nargs='*',
)
def do_build(self, args):
build_dir = self.get_build_dir(args)
binaries_dir = os.path.join(common.gem5_system_dir, 'binaries')
disks_dir = os.path.join(common.gem5_system_dir, 'disks')
def build(self):
build_dir = self.get_build_dir()
binaries_dir = os.path.join(self.env['gem5_system_dir'], 'binaries')
disks_dir = os.path.join(self.env['gem5_system_dir'], 'disks')
os.makedirs(binaries_dir, exist_ok=True)
os.makedirs(disks_dir, exist_ok=True)
if args.gem5_source_dir is None:
if not os.path.exists(os.path.join(common.gem5_src_dir, '.git')):
if common.gem5_src_dir == common.gem5_default_src_dir:
if self.env['gem5_source_dir'] is None:
if not os.path.exists(os.path.join(self.env['gem5_source_dir'], '.git')):
if self.env['gem5_source_dir'] == self.env['gem5_default_source_dir']:
raise Exception('gem5 submodule not checked out')
common.run_cmd([
'git', common.Newline,
'-C', common.gem5_default_src_dir, common.Newline,
'worktree', 'add', common.Newline,
'-b', os.path.join('wt', args.gem5_build_id), common.Newline,
common.gem5_src_dir, common.Newline,
self.sh.run_cmd([
'git', LF,
'-C', self.env['gem5_default_source_dir'], LF,
'worktree', 'add', LF,
'-b', os.path.join('wt', self.env['gem5_build_id']), LF,
self.env['gem5_source_dir'], LF,
])
if args.verbose:
verbose = ['--verbose', common.Newline]
if self.env['verbose']:
verbose = ['--verbose', LF]
else:
verbose = []
if args.arch == 'x86_64':
if self.env['arch'] == 'x86_64':
dummy_img_path = os.path.join(disks_dir, 'linux-bigswap2.img')
with open(dummy_img_path, 'wb') as dummy_img_file:
zeroes = b'\x00' * (2 ** 16)
for i in range(2 ** 10):
dummy_img_file.write(zeroes)
common.run_cmd(['mkswap', dummy_img_path])
self.sh.run_cmd(['mkswap', dummy_img_path, LF])
with open(os.path.join(binaries_dir, 'x86_64-vmlinux-2.6.22.9'), 'w'):
# This file must always be present, despite --kernel overriding that default and selecting the kernel.
# I'm not even joking. No one has ever built x86 gem5 without the magic dist dir present.
pass
elif args.arch == 'arm' or args.arch == 'aarch64':
gem5_system_src_dir = os.path.join(common.gem5_src_dir, 'system')
elif self.env['arch'] == 'arm' or self.env['arch'] == 'aarch64':
gem5_system_source_dir = os.path.join(self.env['gem5_source_dir'], 'system')
# dtb
dt_src_dir = os.path.join(gem5_system_src_dir, 'arm', 'dt')
dt_build_dir = os.path.join(common.gem5_system_dir, 'arm', 'dt')
common.run_cmd([
'make', common.Newline,
'-C', dt_src_dir, common.Newline,
])
common.copy_dir_if_update_non_recursive(
srcdir=dt_src_dir,
dt_source_dir = os.path.join(gem5_system_source_dir, 'arm', 'dt')
dt_build_dir = os.path.join(self.env['gem5_system_dir'], 'arm', 'dt')
self.sh.run_cmd(['make', '-C', dt_source_dir, LF])
self.sh.copy_dir_if_update_non_recursive(
srcdir=dt_source_dir,
destdir=dt_build_dir,
filter_ext='.dtb',
)
# Bootloader 32.
bootloader32_dir = os.path.join(gem5_system_src_dir, 'arm', 'simple_bootloader')
bootloader32_dir = os.path.join(gem5_system_source_dir, 'arm', 'simple_bootloader')
# TODO use the buildroot cross compiler here, and remove the dependencies from configure.
common.run_cmd([
'make', common.Newline,
'-C', bootloader32_dir, common.Newline,
'CROSS_COMPILE=arm-linux-gnueabihf-', common.Newline,
self.sh.run_cmd([
'make', LF,
'-C', bootloader32_dir, LF,
'CROSS_COMPILE=arm-linux-gnueabihf-', LF,
])
# bootloader
common.cp(os.path.join(bootloader32_dir, 'boot_emm.arm'), binaries_dir)
self.sh.cp(os.path.join(bootloader32_dir, 'boot_emm.arm'), binaries_dir)
# Bootloader 64.
bootloader64_dir = os.path.join(gem5_system_src_dir, 'arm', 'aarch64_bootloader')
bootloader64_dir = os.path.join(gem5_system_source_dir, 'arm', 'aarch64_bootloader')
# TODO cross_compile is ignored because the make does not use CC...
common.run_cmd([
'make', common.Newline,
'-C', bootloader64_dir, common.Newline
])
common.cp(os.path.join(bootloader64_dir, 'boot_emm.arm64'), binaries_dir)
common.run_cmd(
self.sh.run_cmd(['make', '-C', bootloader64_dir, LF])
self.sh.cp(os.path.join(bootloader64_dir, 'boot_emm.arm64'), binaries_dir)
self.sh.run_cmd(
(
[
'scons', common.Newline,
'-j', str(args.nproc), common.Newline,
'--gold-linker', common.Newline,
'--ignore-style', common.Newline,
common.gem5_executable, common.Newline,
'scons', LF,
'-j', str(self.env['nproc']), LF,
'--gold-linker', LF,
'--ignore-style', LF,
self.env['gem5_executable'], LF,
] +
verbose +
common.add_newlines(args.extra_scons_args)
self.sh.add_newlines(self.env['extra_scons_args'])
),
cwd=common.gem5_src_dir,
extra_paths=[common.ccache_dir],
cwd=self.env['gem5_source_dir'],
extra_paths=[self.env['ccache_dir']],
)
term_src_dir = os.path.join(common.gem5_src_dir, 'util/term')
m5term_build = os.path.join(term_src_dir, 'm5term')
common.run_cmd(['make', '-C', term_src_dir])
if os.path.exists(common.gem5_m5term):
# Otherwise common.cp would fail with "Text file busy" if you
term_source_dir = os.path.join(self.env['gem5_source_dir'], 'util/term')
m5term_build = os.path.join(term_source_dir, 'm5term')
self.sh.run_cmd(['make', '-C', term_source_dir, LF])
if os.path.exists(self.env['gem5_m5term']):
# Otherwise self.sh.cp would fail with "Text file busy" if you
# tried to rebuild while running m5term:
# https://stackoverflow.com/questions/16764946/what-generates-the-text-file-busy-message-in-unix/52427512#52427512
os.unlink(common.gem5_m5term)
common.cp(m5term_build, common.gem5_m5term)
self.sh.rmrf(self.env['gem5_m5term'])
self.sh.cp(m5term_build, self.env['gem5_m5term'])
def get_build_dir(self, args):
return common.gem5_build_dir
def get_build_dir(self):
return self.env['gem5_build_dir']
if __name__ == '__main__':
Gem5Component().build()
Main().cli()