Text Truncated

[jrfritz]

You did a mistake....you think the bootloader works...but it dose not. Just wait a min while it's loading the floppy and loading the a20 and you'll see you get a bogus mem agian.

[jrfritz]

Ok...I found that the bogus mem happends before the disk loading...i'll post more on what's going on later.

[jrfritz]

Whenever I try to jmp to 0x100000 I still get a bogus mem error.

[pskyboy]

Hmm, thats odd it seems to work fine for me

Peter

[jrfritz]

I'm going to try GRUB.

[jrfritz]

Grub is too much...I like mostly programming my sources...so i'd know where everything is....

hanoi...could I see your bootsector/loader?

[Whatever5k]

You shouldn't give up that quick...Why is GRUB too much? Too hard to install? There are many docs out there which can help you, and they also can tell you what GRUB will do...
It will put your kernel at 1 MB and give you the control...

[jrfritz]

I like NASM source and knowing my code...I can't even get it to compile...never mind grub for now...

i'd like to see hanoi's bootloader.

[df]

i have a grub floppy thats ready to go based on the last release (0.93, iirc). all you need to do is copy your kernel to a:\kernel.bin... no hassles.

grub rocks. writing a bootsector/bootloader is a waste of time imo. time better spent on the OS.
all the hard work is done in grub, eg: getting it to boot on machines with buggy bios, etc. its had wide testing... how many different machines has your bootsector been tested on?

[Whatever5k]

I agree with df, use GRUB and concentrate on your kernel. If I remember right, you still haven't implemented a memory manager, but worry about your bootloader

[jrfritz]

I now again get at text truncated...here is my compiling:

# Simple way to compile

nasm -f bin ../source/boot/boot.asm -o ../bins/boot.bin
nasm -f elf ../source/kernel/kernelasm.asm -o ../source/object/kernelasm.o
gcc -c ../source/kernel/kernel32.cpp -o ../source/object/kernel32.o
gcc -c ../source/kernel/idt.cpp -o ../source/object/idt.o
gcc -c ../source/kernel/error.cpp -o ../source/object/error.o
gcc -c ../source/kernel/fstdio.cpp -o ../source/object/fstdio.o
gcc -c ../source/kernel/x86.cpp -o ../source/object/x86.o
gcc -c ../source/kernel/string.cpp -o ../source/object/string.o
gcc -c ../source/kernel/keys.cpp -o ../source/object/keys.o
gcc -c ../source/kernel/irq.cpp -o ../source/object/irq.o

# Put kernelasm.o first so it IS loaded first!
ld -Tlink.ld -o ../source/temp/kernel32 ../source/object/kernelasm.o ../source/object/kernel32.o ../source/object/idt.o ../source/object/error.o ../source/object/fstdio.o ../source/object/x86.o ../source/object/string.o ../source/object/keys.o ../source/object/irq.o
objcopy -R .note -R .comment -S -O binary ../source/temp/kernel32 ../bins/kernel32.sys

cat ../bins/boot.bin ../bins/kernel32.sys > fritzos.img

# delete the temp files
sh deltemp.sh

here is my link.ld:
OUTPUT_FORMAT("binary")
SECTIONS
{
.text 0x100000 : {
code = .; _code = .; __code = .;
*(.text)
. = ALIGN(4096);
}
.data : {
data = .; _data = .; __data = .;
*(.data)
. = ALIGN(4096);
}
.bss :
{
bss = .; _bss = .; __bss = .;
*(.bss)
. = ALIGN(4096);
}
end = .; _end = .; __end = .;
}

and here is my error:
kernelasm.o: relocation truncated to fit: R_386_16 .text

It's not text trunctated...relocation truncated.

[Whatever5k]

Show us your kernelasm.o please

[jrfritz]

[attachment deleted by admin]

[Whatever5k]

Check if extern functions like "start_textmode" or "LoadingGDTMsg" contain 16-bit code...

[jrfritz]

When I comment out the GDT it works... ???

No those do not contain 16-bit stuff...those are all C functions