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Updated Makefile to allow debugging. Update gitignore.

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This commit is contained in:
Xnoe 2021-11-12 00:51:45 +00:00
parent bfa3f3030f
commit 760069bbb9
Signed by: xnoe
GPG Key ID: 45AC398F44F0DAFE
4 changed files with 15 additions and 6 deletions
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3
.gitignore vendored
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@ -3,4 +3,5 @@
*.stage2
*.sector
*.o
img.d/
img.d/
build/

12
Makefile
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@ -1,5 +1,5 @@
CFLAGS = -std=gnu11 -m32 -mgeneral-regs-only -nostdlib -fno-builtin -fno-exceptions -fno-leading-underscore -fno-pie -fno-stack-protector -Wno-pointer-to-int-cast
CXXFLAGS = -m32 -fno-use-cxa-atexit -mgeneral-regs-only -nostdlib -fno-builtin -fno-rtti -fno-exceptions -fno-leading-underscore -fpermissive -fno-pie -fno-stack-protector -I.
CFLAGS = -g -std=gnu11 -m32 -mgeneral-regs-only -nostdlib -fno-builtin -fno-exceptions -fno-leading-underscore -fno-pie -fno-stack-protector -Wno-pointer-to-int-cast
CXXFLAGS = -g -m32 -fno-use-cxa-atexit -mgeneral-regs-only -nostdlib -fno-builtin -fno-rtti -fno-exceptions -fno-leading-underscore -fpermissive -fno-pie -fno-stack-protector -I.
LDFLAGS =
DISK_IMG_FILES = build/kernel/kernel.bin hello.txt alpha.txt
@ -12,6 +12,9 @@ STAGE2_OBS = build/c_code_entry.o build/boot_stage2/io.o build/boot_stage2/atapi
run: disk.img
qemu-system-x86_64 disk.img
debug: disk.img
qemu-system-x86_64 -s -S disk.img & gdb --command=gdbscript
disk.img: clean prepare build/boot/boot.bin build/boot_stage2/boot.bin $(DISK_IMG_FILES)
dd if=/dev/zero of=disk.img count=43 bs=100k
dd if=build/boot/boot.bin of=disk.img conv=notrunc
@ -43,7 +46,10 @@ build/boot_stage2/%.o: src/boot_stage2/%.c
gcc $(CFLAGS) -o $@ -c $<
# Kernel
build/kernel/kernel.bin: src/kernel/kernel.ld $(KERNEL_OBJS)
build/kernel/kernel.bin: build/kernel/kernel.elf
objcopy -O binary build/kernel/kernel.elf build/kernel/kernel.bin
build/kernel/kernel.elf: src/kernel/kernel.ld $(KERNEL_OBJS)
ld $(LDFLAGS) -T $< $(KERNEL_OBJS)
build/boot_stage2/stage2.o: src/boot_stage2/main.c

2
gdbscript Normal file
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@ -0,0 +1,2 @@
target remote localhost:1234
symbol-file build/kernel/kernel.elf

4
src/kernel/kernel.ld
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@ -1,7 +1,7 @@
OUTPUT_FORMAT(binary)
OUTPUT_FORMAT(elf32-i386)
OUTPUT_ARCH(i386:i386)
OUTPUT(build/kernel/kernel.bin)
OUTPUT(build/kernel/kernel.elf)
SECTIONS {
. = 0xc0000000;