need help compiling source

[beyondsociety]

I need some help compiling my sources. I have four files that I need to link together and run. My code is set up like this:

Bootsector - > Second stage loader - > third stage - > c kernel.

I have tried compiling but it won't work. Can somebody give me a example on how to compile more than just two files. Any help would be appreciated.

By the way, I using the DJGPP port of gcc tools for Windows.

[jrfritz]

Well:

gcc -c somefile.c -o somefile.o
nasm -f coff someasm.asm -o someasm.o

Look in my install.sh for LD and objectcopy commands. There are ports for object copy.

[beyondsociety]

Tom, your install.h doesn't help me. I have a bootsector that loads my second stage loader. How would I compile them together? The second-stage loader loads into pmode and jumps to 0x1000. I then have another file load my c kernel.

I compiled my source but when I run it in bochs I get this error:

Code: Select all

00000237336i[BIOS ] FATAL: Not a bootable disk
00000237635p[BIOS ] >>PANIC<< BIOS panic at rombios.c, line 1550

This is how I am compiling my code:

Code: Select all

nasm -f aout -o mboot.o mboot.o
nasm -f aout -o mloader.o mloader.o
ld -Ttext=0x1000 --oformat binary -o boot.bin mboot.o mloader.o

gcc -ffreestanding -c kernel.c -o kernel.o
nasm -f aout load.asm -o load.o

ld -Ttext=0x1000 --oformat binary -o kernel32.bin kernel.o load.o 
makeboot test.img boot.bin kernel32.bin

I have a feeling that I'm not compiling my code right. Can anybody help me.

[Berserk]

Hi,

Why do you want to link them together??

And why the heck do you have a third stage loader?? You could've put it all in the Second Stage Loader!

Cya.

[beyondsociety]

Code: Select all

Why do you want to link them together??

I don't know what I was thinking. I actually only want to link the second-stage loader with the c kernel.

Code: Select all

And why the heck do you have a third stage loader?? You could've put it all in the Second Stage Loader!

I don't know what I was thinking. I will do that as it will save me some headache. Thanks for the help.

[jrfritz]

Here's what I did:

Bootloader, sets pmode, gdt, loads 2nd stage loader with C kernel.

2nd loader:

new bigger GDT with more power
externel functions

Kernel linked with 2nd loader:
Your stuff.

[jrfritz]

But a seperat 2nd stage loader and a 3rd linked with kernel gives you more flexibility, but causes more bugs and probs.

[beyondsociety]

I've already figured that out Tom ;D

If your not too busy, can you help me with objcopy?

[jrfritz]

Yea...how come the command line info in install.sh doesn't help? ( need to open it up with Wordpad...not notepad)

[beyondsociety]

Opening up your install.sh file in wordpad is no problem. What I don't understand is the different command-line options you are using.

I've tried to look at the gnu manuals and its like trying to pull gum out of your hair.

So your help would be appreciated.

[beyondsociety]

Sorry about that Tom. I figured out my problem. I'm at school right now, so I won't be able to test it till later.

If I still have problems, I send you a reply for help.

[jrfritz]

I don't even know the options i'm typing in!

At least it just works for me...