From 7845d5da705fcbff9d0f1e4c07d89ece9323bfed Mon Sep 17 00:00:00 2001
From: MeexReay <meexreay@gmail.com>
Date: Tue, 28 Jan 2025 00:00:11 +0300
Subject: [PATCH] hello world asdasd

---
 Makefile                  | 37 ++++++++++++++++++++++++++++++++++++
 kernel/.cargo/config.toml | 15 +++++++++++++++
 shell.nix                 |  8 ++++++++
 src/boot.s                | 40 +++++++++++++++++++++++++++++++++++++++
 src/grub.cfg              |  5 +++++
 src/linker.ld             | 23 ++++++++++++++++++++++
 6 files changed, 128 insertions(+)
 create mode 100644 Makefile
 create mode 100644 kernel/.cargo/config.toml
 create mode 100644 shell.nix
 create mode 100644 src/boot.s
 create mode 100644 src/grub.cfg
 create mode 100644 src/linker.ld

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..0d9fae9
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,37 @@
+.PHONY: clean run run-iso target_dir
+
+target/main.iso: target/kernel.elf target_dir
+	cp 'src/grub.cfg' target/iso/boot/grub
+	cp '$<' target/iso/boot
+	grub-mkrescue -o '$@' target/iso
+
+target/boot.o: src/boot.s target_dir
+	nasm -f elf32 '$<' -o '$@'
+
+target/kernel.elf: src/linker.ld target/boot.o target/kernel.o
+	i686-elf-ld -m elf_i386 -nostdlib -o '$@' -T $^
+
+target/kernel.o: kernel/ target_dir
+	cd kernel && cargo build --release
+	cp kernel/target/x86-unknown-bare_metal/release/deps/kernel-*.o target/kernel.o
+
+target_dir:
+	mkdir -p target
+	mkdir -p target/iso
+	mkdir -p target/iso/lib
+	mkdir -p target/iso/boot
+	mkdir -p target/iso/boot/grub
+
+build: target/main.iso
+
+clean:
+	rm -rf target
+	rm -rf kernel/target
+	rm -rf kernel/Cargo.lock
+	mkdir target
+
+run-elf: target/kernel.elf
+	qemu-system-i386 -kernel '$<'
+
+run: target/main.iso
+	qemu-system-i386 -cdrom '$<'
\ No newline at end of file
diff --git a/kernel/.cargo/config.toml b/kernel/.cargo/config.toml
new file mode 100644
index 0000000..4fe674c
--- /dev/null
+++ b/kernel/.cargo/config.toml
@@ -0,0 +1,15 @@
+
+[unstable]
+build-std = ["core", "compiler_builtins"]
+build-std-features = ["compiler-builtins-mem"]
+
+[build]
+target = "x86-unknown-bare_metal.json"
+
+[target.x86-unknown-bare_metal]
+rustflags = [
+    "-C", "opt-level=s",        # Эквивалент GCC -Os
+    "-C", "debuginfo=0",        # Убирает отладочную информацию
+    "-C", "relocation-model=static",  # Для freestanding
+    "--emit=obj"                # Генерация объектного файла
+]
\ No newline at end of file
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..2e2dc87
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,8 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  nativeBuildInputs =
+    with pkgs; [
+        pkgsCross.i686-embedded.buildPackages.gcc
+    ];
+}
\ No newline at end of file
diff --git a/src/boot.s b/src/boot.s
new file mode 100644
index 0000000..2c66ac8
--- /dev/null
+++ b/src/boot.s
@@ -0,0 +1,40 @@
+global loader
+global stack_ptr
+
+extern main
+
+MODULEALIGN equ 1<<0
+MEMINFO equ 1<<1
+FLAGS equ MODULEALIGN | MEMINFO
+MAGIC equ 0x1BADB002
+CHECKSUM equ -(MAGIC + FLAGS)
+
+section .mbheader
+align 4
+MultiBootHeader:
+  dd MAGIC
+  dd FLAGS
+  dd CHECKSUM
+
+section .text
+
+STACKSIZE equ 0x4000
+
+loader:
+  mov esp, stack+STACKSIZE
+  push eax
+  push ebx
+
+  call main
+
+  cli
+
+hang:
+  hlt
+  jmp hang
+
+section .bss
+align 4
+stack:
+  resb STACKSIZE
+stack_ptr:
diff --git a/src/grub.cfg b/src/grub.cfg
new file mode 100644
index 0000000..9f12263
--- /dev/null
+++ b/src/grub.cfg
@@ -0,0 +1,5 @@
+set timeout=0
+set default="0"
+menuentry "main" {
+    multiboot /boot/kernel.elf
+}
diff --git a/src/linker.ld b/src/linker.ld
new file mode 100644
index 0000000..af95765
--- /dev/null
+++ b/src/linker.ld
@@ -0,0 +1,23 @@
+ENTRY (loader)
+SECTIONS
+{
+  . = 0x00100000;
+  .mbheader : {
+    *(.mbheader)
+  }
+  .text : {
+    *(.text)
+  }
+  .rodata ALIGN (0x1000) : {
+    *(.rodata)
+  }
+  .data ALIGN (0x1000) : {
+    *(.data)
+  }
+  .bss : {
+    sbss = .;
+    *(COMMON)
+    *(.bss)
+    ebss = .;
+  }
+}