matos/Makefile

# Used to generated .d file that deal with header dependencies
CPPFLAGS = -MMD
AS=nasm
ASFLAGS += -f elf32
#LDFLAGS += -m32 -nostdlib -mkernel -fno-stack-protector
LDFLAGS += -m32 -nostdlib -static -fno-common -fno-use-cxa-atexit -fno-exceptions -fno-non-call-exceptions -fno-weak -fno-rtti -fno-stack-protector
CFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-stack-protector -fno-tree-vectorize
CXXFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-rtti -fno-pie
DEBUG_FLAGS += -g -Og -DDEBUG -fno-omit-frame-pointer -fno-inline

ARCH?=x86
SUBDIRS := core drivers tests arch/$(ARCH)

CPPFLAGS += $(foreach dir, $(SUBDIRS), -I$(dir))

asmsrc=$(wildcard arch/$(ARCH)/boot/*.asm)
asmobj=$(asmsrc:%.asm=%.o)
csrc=$(shell find $(SUBDIRS) -type f -name "*.c")#   $(wildcard *.c)
cobj=$(csrc:%.c=%.o) arch/$(ARCH)/cpu_context_switch.o arch/$(ARCH)/irq_pit.o
deps = $(csrc:%.c=%.d)

kernel kernel.sym &: $(asmobj) $(cobj) linker.ld
	$(CC) -m32  -ffreestanding -nostdlib $(cobj) $(asmobj) -o kernel -T linker.ld -lgcc
	objcopy --only-keep-debug kernel kernel.sym
	objcopy --strip-debug  kernel

fd.iso: kernel
	mkdir -p isodir/boot/grub
	cp $< isodir/boot/
	@printf "menuentry \"myos\" {\n\tmultiboot /boot/kernel\n}" > isodir/boot/grub/grub.cfg
	grub-mkrescue -o $@ isodir


#https://gcc.gnu.org/onlinedocs/gcc/x86-Function-Attributes.html#x86-Function-Attributes
arch/$(ARCH)/exception_handler.o:arch/$(ARCH)/exception_handler.c
	$(CC) $(CFLAGS) $(CPPFLAGS) -mgeneral-regs-only  -c $< -o $@
arch/$(ARCH)/irq_handler.o:arch/$(ARCH)/irq_handler.c
	$(CC) $(CFLAGS) $(CPPFLAGS) -mgeneral-regs-only  -c $< -o $@

%.o:%.asm
	$(AS) $(ASFLAGS) -o $@ $<

%.o: %.S
	$(CC) "-I$(PWD)" -c "$<" $(CFLAGS) -o "$@"


test: CFLAGS += -DRUN_TEST
test: clean kernel
	qemu-system-x86_64 -kernel kernel -serial stdio -m 32M

run:kernel
	qemu-system-x86_64 -kernel $<


debug: CFLAGS += $(DEBUG_FLAGS) -DRUN_TEST
debug: CXXFLAGS += $(DEBUG_FLAGS)
debug:kernel kernel.sym
	#qemu-system-x86_64 -s -S -kernel kernel&
	#qemu-system-i386 -s -S -kernel kernel&
	#gdb -s kernel.sym -ex "target remote localhost:1234" -ex "dir core:driver:arch/$(ARCH))'"
	gdb -x debug.gdb

debug_test: CFLAGS += $(DEBUG_FLAGS) -DRUN_TEST
debug_test: debug

clean:
	$(RM) kernel $(asmobj) $(cobj) $(deps) fd.iso kernel.sym
	$(RM) -r isodir

ifneq ($(MAKECMDGOALS),clean)
-include $(deps)
endif
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00			`# Used to generated .d file that deal with header dependencies`
			`CPPFLAGS = -MMD`
			`AS=nasm`
			`ASFLAGS += -f elf32`
Add backtrace function 2018-11-16 14:47:21 +01:00			`#LDFLAGS += -m32 -nostdlib -mkernel -fno-stack-protector`
make:fix debug target 2018-11-09 10:50:20 +01:00			`LDFLAGS += -m32 -nostdlib -static -fno-common -fno-use-cxa-atexit -fno-exceptions -fno-non-call-exceptions -fno-weak -fno-rtti -fno-stack-protector`
Disable vect from compiler Otherwise, this may produce vectorized instruction (mmx, sse ...) that will rise a EXCEPTION_INVALID_OPCODE 2019-05-16 23:45:45 +02:00			`CFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-pie -fno-stack-protector -fno-tree-vectorize`
stack_trace try to get function arguments 2018-11-19 13:56:19 +01:00			`CXXFLAGS += -m32 -Wall -Wextra -Werror -ffreestanding -fno-exceptions -fno-rtti -fno-pie`
			`DEBUG_FLAGS += -g -Og -DDEBUG -fno-omit-frame-pointer -fno-inline`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00
organize by arch 2020-04-27 23:45:38 +02:00			`ARCH?=x86`
			`SUBDIRS := core drivers tests arch/$(ARCH)`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00
			`CPPFLAGS += $(foreach dir, $(SUBDIRS), -I$(dir))`

More more stuff in arch subdir 2020-04-29 23:07:01 +02:00			`asmsrc=$(wildcard arch/$(ARCH)/boot/*.asm)`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00			`asmobj=$(asmsrc:%.asm=%.o)`
			`csrc=$(shell find $(SUBDIRS) -type f -name ".c")# $(wildcard .c)`
organize by arch 2020-04-27 23:45:38 +02:00			`cobj=$(csrc:%.c=%.o) arch/$(ARCH)/cpu_context_switch.o arch/$(ARCH)/irq_pit.o`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00			`deps = $(csrc:%.c=%.d)`

Makefile: grouped targets for kernel.sym 2021-08-02 15:07:45 +02:00			`kernel kernel.sym &: $(asmobj) $(cobj) linker.ld`
			`$(CC) -m32 -ffreestanding -nostdlib $(cobj) $(asmobj) -o kernel -T linker.ld -lgcc`
			`objcopy --only-keep-debug kernel kernel.sym`
			`objcopy --strip-debug kernel`
Can generate symbole file 2018-07-20 17:10:58 +02:00
Can generate iso image 2018-07-20 16:55:41 +02:00			`fd.iso: kernel`
			`mkdir -p isodir/boot/grub`
Makefile correction * fix fd.iso kernel path * add debug target 2018-08-05 14:12:18 +02:00			`cp $< isodir/boot/`
Fix iso generation echo -e does not work on ubuntu echo does. It's the opposite on archlinux... Use printf! 2019-05-12 22:56:51 +02:00			`@printf "menuentry \"myos\" {\n\tmultiboot /boot/kernel\n}" > isodir/boot/grub/grub.cfg`
Can generate iso image 2018-07-20 16:55:41 +02:00			`grub-mkrescue -o $@ isodir`

Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00
			`#https://gcc.gnu.org/onlinedocs/gcc/x86-Function-Attributes.html#x86-Function-Attributes`
organize by arch 2020-04-27 23:45:38 +02:00			`arch/$(ARCH)/exception_handler.o:arch/$(ARCH)/exception_handler.c`
makefile: reorg flags 2018-11-16 19:57:56 +01:00			`$(CC) $(CFLAGS) $(CPPFLAGS) -mgeneral-regs-only -c $< -o $@`
organize by arch 2020-04-27 23:45:38 +02:00			`arch/$(ARCH)/irq_handler.o:arch/$(ARCH)/irq_handler.c`
makefile: reorg flags 2018-11-16 19:57:56 +01:00			`$(CC) $(CFLAGS) $(CPPFLAGS) -mgeneral-regs-only -c $< -o $@`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00
			`%.o:%.asm`
			`$(AS) $(ASFLAGS) -o $@ $<`

Add context switch This is taken from SOS 2019-05-15 23:22:28 +02:00			`%.o: %.S`
			`$(CC) "-I$(PWD)" -c "$<" $(CFLAGS) -o "$@"`


Improve make target names 2021-01-26 17:58:33 +01:00			`test: CFLAGS += -DRUN_TEST`
			`test: clean kernel`
Reduce mem to 32M 2021-04-09 20:44:24 +02:00			`qemu-system-x86_64 -kernel kernel -serial stdio -m 32M`
Add some way to test kernel 2018-11-08 22:09:12 +01:00
Improve make target names 2021-01-26 17:58:33 +01:00			`run:kernel`
Make kernel multiboot compatible 2018-07-20 16:41:32 +02:00			`qemu-system-x86_64 -kernel $<`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00
Improve make target names 2021-01-26 17:58:33 +01:00
			`debug: CFLAGS += $(DEBUG_FLAGS) -DRUN_TEST`
Add backtrace function 2018-11-16 14:47:21 +01:00			`debug: CXXFLAGS += $(DEBUG_FLAGS)`
Makefile correction * fix fd.iso kernel path * add debug target 2018-08-05 14:12:18 +02:00			`debug:kernel kernel.sym`
Use i386 qemu for debugging This help going over function and not stepping in 2020-04-19 14:30:48 +02:00			`#qemu-system-x86_64 -s -S -kernel kernel&`
Simplifi debug cmd (allow ctrl-c) 2020-08-18 13:55:52 +02:00			`#qemu-system-i386 -s -S -kernel kernel&`
			`#gdb -s kernel.sym -ex "target remote localhost:1234" -ex "dir core:driver:arch/$(ARCH))'"`
			`gdb -x debug.gdb`
Makefile correction * fix fd.iso kernel path * add debug target 2018-08-05 14:12:18 +02:00
Improve make target names 2021-01-26 17:58:33 +01:00			`debug_test: CFLAGS += $(DEBUG_FLAGS) -DRUN_TEST`
			`debug_test: debug`

Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00			`clean:`
Can generate symbole file 2018-07-20 17:10:58 +02:00			`$(RM) kernel $(asmobj) $(cobj) $(deps) fd.iso kernel.sym`
Makefile: clean isodir 2019-01-09 17:21:51 +01:00			`$(RM) -r isodir`
Initial import from mbr_asm project 2018-07-20 15:41:58 +02:00
			`ifneq ($(MAKECMDGOALS),clean)`
			`-include $(deps)`
			`endif`