Problem with linking kernel

[Chris Giese]

I think you can safely use a dummy __main(), like this:

Code: Select all

int __main(void) { return 0; }

For _alloca(), either

• link with libgcc.a,
• extract _alloca() from libgcc.a and use it alone,
• write your own _alloca(), or
• compile with -mno-stack-arg-probe

This was also discussed in a thread in alt.os.development: http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&th=5a1a16f6e245a2ab&seekm=1061906780.216942%40news.liwest.at#link1

[df]

I added this info into the FAQ (wiki version)

[beyondsociety]

Code: Select all

I think you can safely use a dummy __main(), like this:
Code:int __main(void) { return 0; }

When I add this code to my kernel.c, ld:segmentation fault (core dumped). What is going wrong?

[Tim]

What executable format are you using? The main reason for Cygwin ld crashing is when you try to use the binary format, which is apparently broken in Cygwin.

[beyondsociety]

Fixed it. I changed the OUTPUT_FORMAT in the linker script from pe-i386 to pei-i386 and that fixed the segmentation fault. I was having problems with objcopy not converting my kernel.exe file, which I noticed that it was not working because of not correctly typing in the correct option for the format.

Everything is working now. Thanks for all the help.