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bindsdevbindsdev
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initial stuff
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‎.cargo/config.toml‎

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[build]
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target = "x86_64-unknown-none"
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# [unstable]
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# build-std = ["core", "compiler_builtins"]
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# build-std-features = ["compiler-builtins-mem"]

‎.github/dependabot.yml‎

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version: 2
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updates:
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- package-ecosystem: "cargo"
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directory: "/"
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schedule:
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interval: "daily"

‎.gitignore‎

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/target
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/build

‎Cargo.lock‎

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‎Cargo.toml‎

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[package]
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name = "monoOS"
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version = "0.1.0"
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edition = "2021"
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description = "A hobbyist monolithic operating system, targeting x86-64."
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readme = "README.md"
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license = "MIT"
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authors = ["binds <[email protected]>"]
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[dependencies]
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limine = "0.1.11"
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spin = { version = "0.9.8", default-features = false, features = ["spin_mutex", "once"] }
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x86 = "0.52.0"
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[[bin]]
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name = "monoos"
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path = "src/main.rs"

‎Makefile‎

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# Configuration options
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FEATURES ?=
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PROFILE ?= release
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# Command arguments
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override CARGO_ARGS = --bin monoos --no-default-features
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override QEMU_ARGS = -no-reboot -no-shutdown -M smm=off -machine q35 -drive file=$(ISO),format=raw -bios $(BUILD_ROOT)/OVMF.fd
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# Checks
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ifneq ($(PROFILE),$(filter $(PROFILE),debug release))
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$(error Error: unsupported cargo profile "$(PROFILE)". supported options are "debug" and "release")
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endif
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ifneq ($(FEATURES),)
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override CARGO_ARGS += --features $(FEATURES)
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endif
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ifeq ($(PROFILE), release)
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override CARGO_ARGS += --release
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endif
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ifeq ($(PROFILE),debug)
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override QEMU_ARGS += -s -S
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endif
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ifneq ($(findstring la57,$(FEATURES)),)
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override QEMU_ARGS += -cpu qemu64,+la57
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endif
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# Environment variables
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export MHOS_VERSION = v0.1.0
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# Overrides
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override BUILD_DIR := build
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override BUILD_ROOT := $(BUILD_DIR)/root
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override ISO := $(BUILD_ROOT)/monoos.iso
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override LIMINE_DIR := $(BUILD_DIR)/limine
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override ESP := $(BUILD_ROOT)/EFI/BOOT
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override KERNEL_BIN := $(BUILD_ROOT)/monoos.elf
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# Targets
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.PHONY: all iso run miri clean
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all: iso
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gen_build_dirs:
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@# recursively create from the deepest directory
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@mkdir -p $(ESP)
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limine: gen_build_dirs
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@git clone --depth 1 --branch v5.x-branch-binary https://github.com/limine-bootloader/limine.git $(LIMINE_DIR)
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@$(MAKE) -C $(LIMINE_DIR)
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ovmf:
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@wget https://efi.akeo.ie/OVMF/OVMF-X64.zip -P $(BUILD_ROOT)
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@unzip $(BUILD_ROOT)/OVMF-X64.zip -d $(BUILD_ROOT) -x *.txt
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kernel_build:
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@cargo build $(CARGO_ARGS)
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$(ISO): limine ovmf kernel_build
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@cp target/x86_64-unknown-none/$(PROFILE)/monoos $(KERNEL_BIN)
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@cp limine.cfg $(LIMINE_DIR)/limine-uefi-cd.bin $(BUILD_ROOT)
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@cp $(LIMINE_DIR)/BOOTX64.EFI $(ESP)
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@xorriso -as mkisofs --efi-boot limine-uefi-cd.bin -efi-boot-part --efi-boot-image --protective-msdos-label $(BUILD_ROOT) -o $(ISO)
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# Convenience target for $(ISO)
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iso: $(ISO)
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run: iso
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@qemu-system-x86_64 $(QEMU_ARGS)
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miri:
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@MIRI_NO_STD=1 cargo miri run --target x86_64-unknown-none
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clean:
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@cargo clean
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@rm -rf build

‎build.rs‎

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fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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println!("cargo:rerun-if-changed=linker.ld");
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println!("cargo:rustc-link-arg=-Tlinker.ld");
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}

‎limine.cfg‎

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TIMEOUT=0
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VERBOSE=yes
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: monoOS
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PROTOCOL=limine
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KASLR=yes
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KERNEL_PATH=boot:///monoos.elf

‎linker.ld‎

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/* output an x86-64 ELF file */
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OUTPUT_FORMAT(elf64-x86-64)
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/* make kmain symbol the entry point */
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ENTRY(kmain)
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/* define program headers to get desired MMU permissions */
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PHDRS
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{
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text PT_LOAD FLAGS((1 << 0) | (1 << 2)) ; /* Execute + Read */
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rodata PT_LOAD FLAGS((1 << 2)) ; /* Read only */
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data PT_LOAD FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */
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dynamic PT_DYNAMIC FLAGS((1 << 1) | (1 << 2)) ; /* Write + Read */
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}
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SECTIONS
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{
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/* We wanna be placed in the topmost 2GiB of the address space, for optimisations */
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/* and because that is what the Limine spec mandates. */
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/* Any address in this region will do, but often 0xffffffff80000000 is chosen as */
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/* that is the beginning of the region. */
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. = 0xffffffff80000000;
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.text : {
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*(.text .text.*)
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} :text
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/* Move to the next memory page for .rodata */
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. += CONSTANT(MAXPAGESIZE);
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/* The built-in `x86_64-unknown-none` target generates relocatable executables */
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/* by default, so we need to include the relocation information (.dynstr, .dynsym, */
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/* and .rela) for the bootloader too properly load the kernel at runtime. */
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.dynsym : {
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*(.dynsym)
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} :rodata
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.dynstr : {
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*(.dynstr)
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} :rodata
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.rela : {
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*(.rela*)
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} :rodata
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.rodata : {
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*(.rodata .rodata.*)
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} :rodata
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/* Move to the next memory page for .data */
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. += CONSTANT(MAXPAGESIZE);
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/* The dynamic table is used to find the relocation info (declared above), so it */
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/* must be included both in the :data and :dynamic segments. */
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.dynamic : {
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*(.dynamic)
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} :data :dynamic
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.got : {
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*(.got)
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} :data
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.data : {
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*(.data.rel.ro .data.rel.ro.*)
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*(.data .data.*)
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} :data
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/* NOTE: .bss needs to be the last thing mapped to :data, otherwise lots of */
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/* unnecessary zeros will be written to the binary. */
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/* If you need, for example, .init_array and .fini_array, those should be placed */
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/* above this. */
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.bss : {
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*(COMMON)
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*(.dynbss)
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*(.bss .bss.*)
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} :data
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/* Discard .note.* and .eh_frame since they may cause issues on some hosts. */
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/DISCARD/ : {
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*(.eh_frame)
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*(.note .note.*)
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}
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}

‎rust-toolchain.toml‎

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[toolchain]
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channel = "nightly"

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