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rust_experiments/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "rust_kernel"
+version = "0.1.0"
+authors = ["yo"]
+
+[lib]
+crate-type = ["staticlib"]

rust_experiments/Makefile

@@ -1,14 +1,17 @@
 
 arch ?= x86-64
+rust_target := x86_64-unknown-linux-gnu
 
 linker_script := src/linker.ld
 grub_cfg := src/grub.cfg
 kernel := kernel.bin
 iso := os.iso
 
+
 asm_source := $(wildcard src/*.asm)
 asm_object := $(patsubst src/%.asm, \
 	%.o, $(asm_source))
+rust_object := target/$(rust_target)/debug/librust_kernel.a
 
 .PHONY: all clean run iso
 
@@ -23,8 +26,11 @@ $(iso): $(kernel) $(grub_cfg)
 	@cp $(grub_cfg) isofiles/boot/grub
 	@grub-mkrescue -o $(iso) isofiles 2> /dev/null
 
-$(kernel): $(asm_object) $(linker_script)
+cargo:
-	@ld -n -T $(linker_script) -o $(kernel) $(asm_object)
+	@cargo build --target $(rust_target)
+
+$(kernel): cargo $(rust_object) $(asm_object) $(linker_script)
+	@ld -n -T $(linker_script) -o $(kernel) $(asm_object) $(rust_object)
 
 %.o: src/%.asm
 	@nasm -f elf64 $< -o $@
@@ -34,3 +40,4 @@ clean:
 	@rm -f *.o
 	@rm -f kernel.bin
 	@rm -f os.iso
+	@cargo clean

rust_experiments/src/lib.rs

@@ -0,0 +1,12 @@
+
+#![feature(no_std, lang_items)]
+#![no_std]
+
+#[no_mangle]
+pub extern fn rust_main() {}
+
+#[lang = "eh_personality"]
+extern fn eh_personality() {}
+
+#[lang = "panic_fmt"]
+extern fn panic_fmt() -> ! { loop {}}

rust_experiments/src/long_mode_init.asm

@@ -5,6 +5,8 @@ bits 64
 
 long_mode_start:
     ; print "OKAY"
+    extern rust_main
+    call rust_main
     mov rax, 0x2f59_2f41_2f4b_2f4f
     mov qword [0xb8000], rax
     hlt