From 4130562b1555cabe441efe9420cebe12e7ed8d39 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Sat, 13 Jan 2024 16:43:49 -0500
Subject: application loading

---
 makefile | 58 ++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 44 insertions(+), 14 deletions(-)

(limited to 'makefile')

diff --git a/makefile b/makefile
index 82734bc..7b14369 100644
--- a/makefile
+++ b/makefile
@@ -1,6 +1,12 @@
-GPP_ARGS = -Wall -Wextra -O3 -ggdb -I include -ffreestanding -fno-exceptions -fno-rtti -mno-sse
-KERNEL_OBJECTS = allocator.cpp entry.cpp framebuffer.cpp paging.asm paging.cpp storage.cpp \
-  storage/bd/memory.cpp storage/fs/tarfs.cpp terminal.cpp utility.cpp vfile.cpp
+GPP_ARGS = -Wall -Wextra -O3 -ggdb -I include \
+  -ffreestanding -fno-exceptions -fno-rtti -mno-sse
+KGPP_ARGS = ${GPP_ARGS}
+AGPP_ARGS = ${GPP_ARGS}
+
+LD_ARGS = -z noexecstack
+KLD_ARGS = -T kernel/link.ld ${LD_ARGS}
+ALD_ARGS = -T applications/link.ld ${LD_ARGS}
+LLD_ARGS = ${LD_ARGS}
 
 all: out/disk.iso
 
@@ -15,37 +21,61 @@ dist-clean:
 	rm -f include/mercury/kernel/limine.hpp
 
 limine:
-	git clone --depth=1 -b v6.x-branch https://github.com/limine-bootloader/limine.git limine
+	git clone --depth=1 -b v6.x-branch \
+	  https://github.com/limine-bootloader/limine.git limine
 	cd limine && ./bootstrap && ./configure -q --enable-bios --enable-bios-cd
 	+make -C limine
 	cp limine/limine.h include/mercury/kernel/limine.hpp
 
 obj/kernel/entry.cpp.o: kernel/entry.cpp limine
 	@mkdir -p $(@D)
-	g++ -c ${GPP_ARGS} $< -o $@
+	g++ -c ${KGPP_ARGS} $< -o $@
 
 obj/kernel/%.cpp.o: kernel/%.cpp
 	@mkdir -p $(@D)
-	g++ -c ${GPP_ARGS} $< -o $@
+	g++ -c ${KGPP_ARGS} $< -o $@
 
 obj/kernel/%.asm.o: kernel/%.asm
 	@mkdir -p $(@D)
 	nasm -f elf64 $< -o $@
 
+KERNEL_OBJECTS = allocator.cpp application.cpp entry.cpp framebuffer.cpp \
+  paging.asm paging.cpp storage.cpp storage/bd/memory.cpp terminal.cpp \
+	storage/fs/tarfs.cpp utility.cpp vfile.cpp syscall.asm syscall.cpp
 obj/kernel.elf: ${KERNEL_OBJECTS:%=obj/kernel/%.o}
-	ld -T kernel/link.ld $^ -o $@
+	ld ${KLD_ARGS} $^ -o $@
+
+obj/stdlib/%.asm.o: stdlib/%.asm
+	@mkdir -p $(@D)
+	nasm -f elf64 $< -o $@
+
+obj/stdlib/%.cpp.o: stdlib/%.cpp
+	@mkdir -p $(@D)
+	g++ -c ${AGPP_ARGS} $< -o $@
+
+STDLIB_OBJECTS = entry.cpp syscall.asm
+obj/stdlib.o: ${STDLIB_OBJECTS:%=obj/stdlib/%.o}
+	ld -r ${LLD_ARGS} $^ -o $@
+
+obj/%.cpp.o: applications/%.cpp
+	@mkdir -p $(@D)
+	g++ -c ${AGPP_ARGS} $< -o $@
+
+INIT_OBJECTS = main.cpp
+obj/initfs/bin/init.elf: ${INIT_OBJECTS:%=obj/init/%.o} obj/stdlib.o
+	@mkdir -p $(@D)
+	ld ${ALD_ARGS} $^ -o $@
 
-obj/initfs.tgz:
-	@mkdir -p obj/initfs
-	echo test > obj/initfs/test.txt
-	mkdir -p obj/initfs/dir/dir2
-	ln -s ../test.txt obj/initfs/dir/test2.txt
+APPLICATIONS = init
+obj/initfs.tgz: ${APPLICATIONS:%=obj/initfs/bin/%.elf}
 	tar czf obj/initfs.tgz -C obj/initfs .
 
 out/disk.iso: obj/kernel.elf obj/initfs.tgz limine
 	mkdir -p obj/iso out
-	cp obj/kernel.elf obj/initfs.tgz limine/bin/limine-bios.sys limine/bin/limine-bios-cd.bin limine.cfg obj/iso/
+	cp obj/kernel.elf obj/initfs.tgz limine/bin/limine-bios.sys \
+	  limine/bin/limine-bios-cd.bin limine.cfg obj/iso/
 	cp terminus/ter-u16b.psf obj/iso/termfont.psf
-	xorriso -as mkisofs -quiet -no-emul-boot -boot-info-table -boot-load-size 4 -b limine-bios-cd.bin obj/iso -o $@
+	xorriso -as mkisofs -quiet -no-emul-boot -boot-info-table \
+	  -boot-load-size 4 -b limine-bios-cd.bin obj/iso -o $@
 	limine/bin/limine bios-install $@
 	rm -rf obj/iso
-- 
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