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Lprogster wrote:Hi all

As well as developing my OS in Windows, I would like to start a new OS in Linux. As when starting my first OS, I decided to start with this one at http://osdever.net/bkerndev/Docs/whatsleft.htm . (Scroll down to the bit 'Get the whole tutorial...' for the OS archive)

However I am having problems compiling it. There is a batch script with it which is used to compile it. I create my own '.sh' script with the equivalent commands and run it. I then use 'cat' to join it to my boot sector and it produces a 1MB kernel that Qemu tells me is invalid.

Here is my script; please dont run it as it may be unsafe!

Code: Select all

cd /home/lster/Desktop/bkerndev/Sources

nasm -f aout -o start.o start.asm

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o main.o main.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o scrn.o scrn.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o gdt.o gdt.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o idt.o idt.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o isrs.o isrs.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o irq.o irq.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o timer.o timer.c

gcc -Wall -O -fstrength-reduce -fomit-frame-pointer -finline-functions -nostdinc -fno-builtin -I./include -c -o kb.o kb.c

ld -T link.ld -o kernel.bin start.o main.o scrn.o gdt.o idt.o isrs.o irq.o timer.o kb.o

cat ./bootsect.bin ./kernel.bin > ./a.img

It should be noted my boot sector has already been made (in Windows) and does work. I am using the provided link script and source code.

Any ideas? (Tell me if you need more info.)

Thanks,
Lster

Kernel now starting.........
Init keyboard.. DONE
Init floppy.. DONE
Enabling ints.. DONE
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Lprogster wrote:Thank you; it now accepts my kernel, but when I run it Qemu just hangs. Any other ideas...?