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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

154
build-baremetal
View File

@@ -1,73 +1,80 @@
#!/usr/bin/env python3
import os
import common
from shell_helpers import LF
class BaremetalComponent(common.Component):
def do_build(self, args):
common.assert_crosstool_ng_supports_arch(args.arch)
build_dir = self.get_build_dir(args)
bootloader_obj = os.path.join(common.baremetal_build_lib_dir, 'bootloader{}'.format(common.obj_ext))
class Main(common.BuildCliFunction):
def __init__(self):
super().__init__(
description='''\
Build the baremetal examples with crosstool-NG.
''',
supported_archs=common.consts['crosstool_ng_supported_archs']
)
def build(self):
build_dir = self.get_build_dir()
bootloader_obj = os.path.join(self.env['baremetal_build_lib_dir'], 'bootloader{}'.format(self.env['obj_ext']))
common_basename_noext = 'common'
common_src = os.path.join(common.root_dir, common_basename_noext + common.c_ext)
common_obj = os.path.join(common.baremetal_build_lib_dir, common_basename_noext + common.obj_ext)
common_src = os.path.join(self.env['root_dir'], common_basename_noext + self.env['c_ext'])
common_obj = os.path.join(self.env['baremetal_build_lib_dir'], common_basename_noext + self.env['obj_ext'])
syscalls_basename_noext = 'syscalls'
syscalls_src = os.path.join(common.baremetal_src_lib_dir, syscalls_basename_noext + common.c_ext)
syscalls_obj = os.path.join(common.baremetal_build_lib_dir, syscalls_basename_noext + common.obj_ext)
syscalls_src = os.path.join(self.env['baremetal_source_lib_dir'], syscalls_basename_noext + self.env['c_ext'])
syscalls_obj = os.path.join(self.env['baremetal_build_lib_dir'], syscalls_basename_noext + self.env['obj_ext'])
common_objs = [common_obj, syscalls_obj]
cflags = [
'-I', common.baremetal_src_lib_dir, common.Newline,
'-I', common.root_dir, common.Newline,
'-O0', common.Newline,
'-ggdb3', common.Newline,
'-mcpu={}'.format(common.mcpu), common.Newline,
'-nostartfiles', common.Newline,
'-I', self.env['baremetal_source_lib_dir'], LF,
'-I', self.env['root_dir'], LF,
'-O0', LF,
'-ggdb3', LF,
'-mcpu={}'.format(self.env['mcpu']), LF,
'-nostartfiles', LF,
]
if args.prebuilt:
if self.env['prebuilt']:
gcc = 'arm-none-eabi-gcc'
else:
os.environ['PATH'] = common.crosstool_ng_bin_dir + os.environ['PATH']
gcc = common.get_toolchain_tool('gcc', allowed_toolchains=['crosstool-ng'])
if common.emulator == 'gem5':
if common.machine == 'VExpress_GEM5_V1':
os.environ['PATH'] = self.env['crosstool_ng_bin_dir'] + os.environ['PATH']
gcc = self.get_toolchain_tool('gcc', allowed_toolchains=['crosstool-ng'])
if self.env['emulator'] == 'gem5':
if self.env['machine'] == 'VExpress_GEM5_V1':
entry_address = 0x80000000
uart_address = 0x1c090000
elif common.machine == 'RealViewPBX':
elif self.env['machine'] == 'RealViewPBX':
entry_address = 0x10000
uart_address = 0x10009000
else:
raise Exception('unknown machine: ' + common.machine)
cflags.extend(['-D', 'GEM5'.format(uart_address), common.Newline])
raise Exception('unknown machine: ' + self.env['machine'])
cflags.extend(['-D', 'GEM5'.format(uart_address), LF])
else:
entry_address = 0x40000000
uart_address = 0x09000000
os.makedirs(build_dir, exist_ok=True)
os.makedirs(common.baremetal_build_lib_dir, exist_ok=True)
src = os.path.join(common.baremetal_src_lib_dir, '{}{}'.format(args.arch, common.asm_ext))
if common.need_rebuild([src], bootloader_obj):
common.run_cmd(
[gcc, common.Newline] +
os.makedirs(self.env['baremetal_build_lib_dir'], exist_ok=True)
src = os.path.join(self.env['baremetal_source_lib_dir'], '{}{}'.format(self.env['arch'], self.env['asm_ext']))
if self.need_rebuild([src], bootloader_obj):
self.sh.run_cmd(
[gcc, LF] +
cflags +
[
'-c', common.Newline,
'-o', bootloader_obj, common.Newline,
src, common.Newline,
'-c', LF,
'-o', bootloader_obj, LF,
src, LF,
]
)
for src, obj in [
(common_src, common_obj),
(syscalls_src, syscalls_obj),
]:
if common.need_rebuild([src], obj):
common.run_cmd(
[gcc, common.Newline] +
if self.need_rebuild([src], obj):
self.sh.run_cmd(
[gcc, LF] +
cflags +
[
'-c', common.Newline,
'-D', 'UART0_ADDR={:#x}'.format(uart_address), common.Newline,
'-o', obj, common.Newline,
src, common.Newline,
'-c', LF,
'-D', 'UART0_ADDR={:#x}'.format(uart_address), LF,
'-o', obj, LF,
src, LF,
]
)
self._build_dir(
@@ -86,18 +93,17 @@ class BaremetalComponent(common.Component):
bootloader_obj=bootloader_obj,
common_objs=common_objs,
)
arch_dir = os.path.join('arch', args.arch)
if os.path.isdir(os.path.join(common.baremetal_src_dir, arch_dir)):
if os.path.isdir(os.path.join(self.env['baremetal_source_arch_dir'])):
self._build_dir(
arch_dir,
self.env['baremetal_source_arch_subpath'],
gcc=gcc,
cflags=cflags,
entry_address=entry_address,
bootloader_obj=bootloader_obj,
common_objs=common_objs,
)
arch_dir = os.path.join('arch', args.arch, 'no_bootloader')
if os.path.isdir(os.path.join(common.baremetal_src_dir, arch_dir)):
arch_dir = os.path.join('arch', self.env['arch'], 'no_bootloader')
if os.path.isdir(os.path.join(self.env['baremetal_source_dir'], arch_dir)):
self._build_dir(
arch_dir,
gcc=gcc,
@@ -108,18 +114,8 @@ class BaremetalComponent(common.Component):
bootloader=False,
)
def get_argparse_args(self):
return {
'description': '''\
Build the baremetal examples with crosstool-NG.
'''
}
def get_build_dir(self, args):
return common.baremetal_build_dir
def get_default_args(self):
return {'baremetal': 'all'}
def get_build_dir(self):
return self.env['baremetal_build_dir']
def _build_dir(
self,
@@ -131,48 +127,48 @@ Build the baremetal examples with crosstool-NG.
common_objs,
bootloader=True
):
"""
'''
Build all .c and .S files in a given subpath of the baremetal source
directory non recursively.
Place outputs on the same subpath or the output directory.
"""
in_dir = os.path.join(common.baremetal_src_dir, subpath)
out_dir = os.path.join(common.baremetal_build_dir, subpath)
'''
in_dir = os.path.join(self.env['baremetal_source_dir'], subpath)
out_dir = os.path.join(self.env['baremetal_build_dir'], subpath)
os.makedirs(out_dir, exist_ok=True)
common_objs = common_objs.copy()
if bootloader:
common_objs.append(bootloader_obj)
for in_basename in os.listdir(in_dir):
in_path = os.path.join(in_dir, in_basename)
if os.path.isfile(in_path) and os.path.splitext(in_basename)[1] in (common.c_ext, common.asm_ext):
if os.path.isfile(in_path) and os.path.splitext(in_basename)[1] in (self.env['c_ext'], self.env['asm_ext']):
in_name = os.path.splitext(in_basename)[0]
main_obj = os.path.join(common.baremetal_build_dir, subpath, '{}{}'.format(in_name, common.obj_ext))
src = os.path.join(common.baremetal_src_dir, in_path)
if common.need_rebuild([src], main_obj):
common.run_cmd(
[gcc, common.Newline] +
main_obj = os.path.join(self.env['baremetal_build_dir'], subpath, '{}{}'.format(in_name, self.env['obj_ext']))
src = os.path.join(self.env['baremetal_source_dir'], in_path)
if self.need_rebuild([src], main_obj):
self.sh.run_cmd(
[gcc, LF] +
cflags +
[
'-c', common.Newline,
'-o', main_obj, common.Newline,
src, common.Newline,
'-c', LF,
'-o', main_obj, LF,
src, LF,
]
)
objs = common_objs + [main_obj]
out = os.path.join(common.baremetal_build_dir, subpath, in_name + common.baremetal_build_ext)
link_script = os.path.join(common.baremetal_src_dir, 'link.ld')
if common.need_rebuild(objs + [link_script], out):
common.run_cmd(
[gcc, common.Newline] +
out = os.path.join(self.env['baremetal_build_dir'], subpath, in_name + self.env['baremetal_build_ext'])
link_script = os.path.join(self.env['baremetal_source_dir'], 'link.ld')
if self.need_rebuild(objs + [link_script], out):
self.sh.run_cmd(
[gcc, LF] +
cflags +
[
'-Wl,--section-start=.text={:#x}'.format(entry_address), common.Newline,
'-o', out, common.Newline,
'-T', link_script, common.Newline,
'-Wl,--section-start=.text={:#x}'.format(entry_address), LF,
'-o', out, LF,
'-T', link_script, LF,
] +
common.add_newlines(objs)
self.sh.add_newlines(objs)
)
if __name__ == '__main__':
BaremetalComponent().build()
Main().cli()