Inital commit: Simple POC syscall working and displaying in dmesg with tester tool

Makefile

@@ -0,0 +1,53 @@
+KDIR ?= /lib/modules/$(shell uname -r)/build
+SRC = src/process-and-memory.c
+TESTER_SRC = src/tester/main.c
+KERNEL_OUT ?= $(KDIR)/System.map $(KDIR)/arch/x86/boot/bzImage $(KDIR)/.config
+
+# Folders
+SRC_DIR = src
+OUTS = obj
+
+SRC = tester/main.c
+SRC_PLUS_PATH = $(addprefix $(SRC_DIR)/, $(SRC))
+OUT = $(subst $(SRC_DIR)/, $(OUTS)/, $(patsubst %.c, %.o, $(SRC_PLUS_PATH)))
+
+NAME = ps_tester
+
+$(NAME): $(OUT) src/tester/main.c
+	@gcc $(OUT) -o $(NAME) -Wall -Wextra -Werror
+
+$(OUT): $(OUTS)/%.o : $(SRC_DIR)/%.c
+	@echo "Compiling $(basename $(notdir $*.o))"
+	@mkdir -p $(@D)
+	@gcc -Wall -Werror -Wextra -g -c $< -o $@
+
+clean:
+	@echo "Cleaning object files"
+	@rm -rf obj
+
+fclean: clean
+	@echo "Cleaning binary"
+	@rm -rf ps_tester
+
+re: fclean
+	@$(MAKE) -C $$PWD
+
+patch_kernel:
+
+compile_kernel: patch_kernel
+	$(MAKE) -C $(KDIR) LLVM=1 -j 6
+
+mount_boot:
+	mount /dev/vda1
+
+install_kernel: mount_boot compile_kernel
+	$(MAKE) -C $(KDIR) LLVM=1 modules_install
+	cp -iv $(KDIR)/System.map /boot/System.map-6.12.0-modded
+	cp -iv $(KDIR)/arch/x86/boot/bzImage /boot/vmlinuz-6.12.0-jrathelo-modded
+	cp -iv $(KDIR)/.config /boot/config-6.12.0-modded
+	grub-mkconfig -o /boot/grub/grub.cfg
+
+install: install_kernel
+	reboot
+
+.PHONY: install compile_kernel install_kernel patch_kernel mount_boot