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This is needed for Xen to boot.

Also add menu items for forcing disk or MFS boot.

Another gratuitous seek avoidance measure.

This segment just references part of another PT_LOAD segment that contains
info related to dynamic linking. Loading this segment just re-loads a part
of another segment that was already loaded. More gratuitous seeks, bad for
TFTP.

The FreeBSD loader handles the PT_DYNAMIC segment, but it appears to
be for its own benefit and does not affect the kernel that was loaded.

Gratuitous seeks are bad for TFTP.

OpenBSD 5.9 apparently defaults to -fpie. We use -fno-PIE when appropriate
already, but that is not enough - it does not turn off -fpie.

Actually check for -fPIE is not precise enough. __PIE__ is set for both
-fpie and -fPIE but with different values. As far as I can tell, both
options were introduced at the same time, so both should always be supported.

This fixes compilation on OpenBSD 5.9 which otherwise created insanely big
lzma_decompress.img.

Reported, suggested and tested by: Jiri B <jirib@devio.us>

grub_net_add_addr may fail with OOM and we use returned interface
later without any checks.

Historically this variable hold previous value of filename that
had to be freed if allocated previously. Currently this branch
is entered only if filename was not allocated previously so it
became redundant. It did not cause real problems because grub_free
was not called, but code is confusing and causes compilation error
in some cases.

Fixes compilation on OpenBSD 5.9.

Reported by Jiri B <jirib@devio.us>

Grub would notify the user if the new config was invalid, however, it
did not exit properly with exit code 1. Added the proper exit code.

Resolves: rhbz#1252311

Reported by: Daniel Kiper

Same fix as in 082bc9f7.

Commit 7290bb56 causes GRUB_DISABLE_LINUX_UUID to be ignored due to
mixing of || and && operators. Add some parens to help with that.

Returned from the OpenProtocol operation, the grub_efi_block_io_media
structure contains the io_align field, specifying the minimum alignment
required for buffers used in any data transfers with the device.

Make grub_efidisk_readwrite() allocate a temporary buffer, aligned to
this boundary, if the buffer passed to it does not already meet the
requirements.

Also sanity check the io_align field in grub_efidisk_open() for
power-of-two-ness and bail if invalid.

This is a no-op on x86 but necessarry on ARM and may be necessarry on MIPS.

For this ensure that all bss sections are merged.

We need this to correctly prelink non-PE relocatable images.

Currently we pass around a lot of pointer. Instead put all relevant data
into one structure.

As a preparation for U-Boot relocations, split emitting PE-relocations
from parsing source ELF-relocations.

util/grub-mkimagexx.c is included in a special way into mkimage.c.
Interoperation between defines makes this very tricky. Instead
just have a clean interface and compile util/grub-mkimage*.c separately
from mkimage.c

kernel_type may be set to the type of failed kernel. This patching-up is
easier than to reflow kernel loading routines.

This just pollutes serial console.

Map EFI_NO_MEDIA to GRUB_ERR_OUT_OF_RANGE that is ignored by diskfilter. This
actually matches pretty close (we obviously attempt to read outside of media)
and avoids adding more error codes.

This affects only internally initiated scans. If read/write from removable is
explicitly requested, we still return an error and text explanation is more
clear for user than generic error.

Reported and tested by Andreas Loew <Andreas.Loew@gmx.net>