[gPXE] EFI build not working?

[Michael Brown]

On Friday 28 May 2010 20:02:07 Joshua Oreman wrote:
> > $ file bin-x86_64-efi/igb.efi
> > bin-x86_64-efi/igb.efi: MS-DOS executable
> 
> Hm. I'm not sure how elf2efi works in 64-bit mode; could someone else
>  clarify?

Almost identically to how it works in 32-bit mode.  The PE64 file format is 
slightly different, and not just by differing field widths.

Our EFI64 images have been tested on real hardware, and I don't think elf2efi.c 
has changed since.

It's worth noting that with my toolchain, "file" identifies both 32-bit and 64-
bit EFI images as "MS-DOS executable".  I don't think it's a reliable test.

objdump used to be able to dump out EFI images, but at some point around 
2.17/2.18 the relevant part of BFD was broken, and it now fails with "File 
format not recognized".  If you have an older-but-not-too-old version of 
binutils available, you may be able to try objdump.

Michael