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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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How to Apply These Terms to Your New Programs
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Also add information on how to contact you by electronic and paper mail.
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This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

28
compile_flags.txt Normal file
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-std=gnu2x
-Wall
-Wextra
-Werror
-D__ck_loader_limine__
-D__ck_toolchain_value=clang
-D__ck_encoding_utf8__
-D__ck_sys_kernel__
-D__ck_freestanding__
-D__ck_loader_value=limine
-D__ck_encoding_value=utf8
-D__ck_arch_x86_64__
-D__ck_toolchain_clang__
-D__ck_bits_value=64
-D__ck_abi_sysv__
-D__ck_abi_value=sysv
-D__ck_sys_value=kernel
-D__ck_arch_value=x86_64
-D__ck_bits_64__
-ffreestanding
-fno-stack-protector
-mno-80387
-mno-mmx
-mno-3dnow
-mno-sse
-mno-sse2
-mno-red-zone
-Dauto=__auto_type

6
meta/plugins/__init__.py Normal file
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from cutekit import ensure
ensure((0, 7, 0))
from . import cli
from . import flags

19
meta/plugins/build.py Normal file
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from cutekit import builder, cli, model
from pathlib import Path
class Builder:
def __init__(self, args: cli.Args, arch: str = "x86_64"):
self.__registry = model.Registry.use(args)
self.__kernel_scope = builder.TargetScope(
self.__registry,
self.__registry.lookup(f"kernel-{arch}", model.Target),
)
def build_core(self) -> Path:
core_component = self.__registry.lookup("core", model.Component)
product = builder.build(self.__kernel_scope, core_component)[0]
return Path(product.path).absolute()
@property
def arch(self) -> str:
return self.__kernel_scope.target.id.split("-")[1]

23
meta/plugins/cli.py Normal file
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from cutekit import cli, model
from . import build
from . import image
from . import qemu
@cli.command("k", "kernel", "kernel related commands")
def _(args: cli.Args):
pass
@cli.command("b", "kernel/boot", "Boot kernel")
def _(args: cli.Args):
qemu.Qemu(
image.Image(
build.Builder(args)
)
).run()
@cli.command("B", "kernel/build", "Build kernel")
def _(args: cli.Args):
build.Builder(args).build_core()

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meta/plugins/flags.py Normal file
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import os
from cutekit import model, cli, builder, rules, ensure
ensure((0, 7, 0))
@cli.command("f", "flag", "Generate flags for C/C++ compiler")
def _(args: cli.Args):
tool = args.consumeOpt("tool", "cc")
registry = model.Registry.use(args)
target = model.Target.use(args)
scope = builder.TargetScope(registry, target)
if tool not in target.tools:
raise Exception(f"Target {target.name} does not have tool {tool}")
arguments = target.tools[tool].args
if tool in ["cc", "cxx"]:
flags = rules.rules[tool].args + builder._vars['cincs'](scope).split() + builder._vars['cdefs'](scope).split()
i = 0
while i < len(arguments):
if "mcmode" in arguments[i]:
pass
elif "-target" in arguments[i]:
i += 1
else:
flags.append(arguments[i])
i += 1
with open(os.path.join(registry.project.dirname(), "compile_flags.txt"), "w") as f:
f.write("\n".join(flags))
f.write("\n")

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meta/plugins/image.py Normal file
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from pathlib import Path
from cutekit import const, shell
from .build import Builder
class Image:
def __init__(self, builder: Builder, dst: Path = Path(".") / const.PROJECT_CK_DIR / "kernel"):
self.builder = builder
self.path = dst
efi = getattr(self, f"efi_{builder.arch}", None)
if efi:
getattr(self, f"efi_{builder.arch}")()
else:
getattr(self, f"boot_{builder.arch}")()
def __str__(self):
return str(self.path)
def __efi_common(self) -> dict[str, Path]:
efi_boot = self.path / "EFI" / "BOOT"
efi_boot.mkdir(parents=True, exist_ok=True)
boot_dir = self.path / "boot"
boot_dir.mkdir(parents=True, exist_ok=True)
return {
"efi_boot": efi_boot,
"boot_dir": boot_dir,
}
def efi_x86_64(self):
kernel_path = self.builder.build_core()
paths = self.__efi_common()
cfg = [
"TIMEOUT=0",
"GRAPHICS=no",
":kernel",
"PROTOCOL=limine",
"KERNEL_PATH=boot:///boot/kernel.elf",
]
shell.wget(
"https://github.com/limine-bootloader/limine/raw/v6.x-branch-binary/BOOTX64.EFI",
str(paths["efi_boot"] / "BOOTX64.EFI"),
)
shell.cp(
str(kernel_path),
str(paths["boot_dir"] / "kernel.elf"),
)
with (paths["boot_dir"] / "limine.cfg").open("w") as f:
f.write('\n'.join(cfg))

64
meta/plugins/qemu.py Normal file
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import os
from cutekit import shell
from .image import Image
class Qemu:
def __init__(self, img: Image, no_reboot: bool = True, nographics: bool = False,
no_shutdown: bool = True, efi: bool = True, memory: str = "4G", debug: bool = False):
self.__img = img
self.__binary = None
self.__efi = efi
self.__args = [
"-m", str(memory),
]
if debug:
self.__args += [
"-s", "-S"
]
if no_reboot:
self.__args.append("-no-reboot")
if no_shutdown:
self.__args.append("-no-shutdown")
if nographics:
self.__args.append("-nographic")
if self.iskvmAvailable():
self.__args += ["-enable-kvm", "-cpu", "host"]
try:
getattr(self, f"arch_{img.builder.arch}")()
except AttributeError:
raise NotImplementedError()
def iskvmAvailable(self) -> bool:
return os.path.exists("/dev/kvm") and os.access("/dev/kvm", os.R_OK)
def arch_x86_64(self):
self.__binary = "qemu-system-x86_64"
self.__args += [
"-smp", "4",
"-debugcon", "mon:stdio"
]
if self.__efi:
ovmf = shell.wget(
"https://retrage.github.io/edk2-nightly/bin/RELEASEX64_OVMF.fd"
)
self.__args += [
"-drive", f"format=raw,file=fat:rw:{self.__img},media=disk",
"-bios", ovmf
]
def run(self):
if self.__binary is None:
raise RuntimeError("Architecture is not set")
shell.exec(self.__binary, *self.__args)

98
meta/targets/kernel-x86_64.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.target.v1",
"id": "kernel-x86_64",
"type": "target",
"props": {
"toolchain": "clang",
"arch": "x86_64",
"bits": "64",
"sys": "kernel",
"loader": "limine",
"abi": "sysv",
"encoding": "utf8",
"freestanding": true,
"host": false
},
"tools": {
"cc": {
"cmd": [
"@latest",
"clang"
],
"args": [
"-target",
"x86_64-none-elf",
"-ffreestanding",
"-fno-stack-protector",
"-mno-80387",
"-mno-mmx",
"-mno-3dnow",
"-mno-sse",
"-mno-sse2",
"-mno-red-zone",
"-mcmodel=kernel",
"-Dauto=__auto_type"
]
},
"cxx": {
"cmd": [
"@latest",
"clang++"
],
"args": [
"-target",
"x86_64-none-elf",
"-ffreestanding",
"-fno-stack-protector",
"-mno-80387",
"-mno-mmx",
"-mno-3dnow",
"-mno-sse",
"-mno-sse2",
"-mno-red-zone",
"-mcmodel=kernel"
]
},
"ld": {
"cmd": [
"@latest",
"ld.lld"
],
"args": [
"-m",
"elf_x86_64",
"-T",
[
"@abspath",
"kernel-x86_64.ld"
],
"-z",
"max-page-size=0x1000"
],
"files": [
"meta/targets/kernel-x86_64.ld"
]
},
"ar": {
"cmd": [
"@latest",
"llvm-ar"
],
"args": [
"rcs"
]
},
"as": {
"cmd": [
"@latest",
"clang"
],
"args": [
"-target",
"x86_64-none-elf",
"-c",
"-g"
]
}
}
}

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meta/targets/kernel-x86_64.ld Normal file
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/* Tell the linker that we want an x86_64 ELF64 output file */
OUTPUT_FORMAT(elf64-x86-64)
OUTPUT_ARCH(i386:x86-64)
/* We want the symbol _start to be our entry point */
ENTRY(_start)
/* Define the program headers we want so the bootloader gives us the right */
/* MMU permissions */
PHDRS
{
text PT_LOAD FLAGS((1 << 0) | (1 << 2)) ; /* Execute + Read */
rodata PT_LOAD FLAGS((1 << 2)) ; /* Read only */
data PT_LOAD FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */
}
SECTIONS
{
/* We wanna be placed in the topmost 2GiB of the address space, for optimisations */
/* and because that is what the Limine spec mandates. */
/* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
/* that is the beginning of the region. */
. = 0xffffffff80000000;
text_start_addr = .;
.text : {
*(.text .text.*)
} :text
text_end_addr = .;
/* Move to the next memory page for .rodata */
. += CONSTANT(MAXPAGESIZE);
rodata_start_addr = .;
PROVIDE(symbol_table = 1);
.rodata : {
*(.rodata .rodata.*)
} :rodata
rodata_end_addr = .;
/* Move to the next memory page for .data */
. += CONSTANT(MAXPAGESIZE);
data_start_addr = .;
.data : {
*(.data .data.*)
} :data
.bss : {
*(COMMON)
*(.bss .bss.*)
} :data
data_end_addr = .;
/* Discard .note.* and .eh_frame since they may cause issues on some hosts. */
/DISCARD/ : {
*(.eh_frame)
*(.note .note.*)
}
}

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project.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.project.v1",
"type": "project",
"id": "kernel"
}

5
src/kernel/core/main.c Normal file
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_Noreturn int _start()
{
for (;;)
;
}

5
src/kernel/core/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "exe",
"id": "core"
}