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Improve FreeDOS direct loading support compatibility.

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* include/grub/i386/relocator.h (grub_relocator16_state):
	New member ebp.
	* grub-core/lib/i386/relocator.c (grub_relocator16_ebp): New extern
	variable.
	(grub_relocator16_boot): Handle %ebp.
	* grub-core/lib/i386/relocator16.S: Likewise.
	* grub-core/loader/i386/pc/freedos.c:
	Load BPB to pass kernel which partition to load from.
	Check that kernel file is not too large.
	Set register dl to BIOS unit number as well.
This commit is contained in:
C. Masloch 2013-01-27 16:07:25 +01:00 • committed by Vladimir 'phcoder' Serbinenko
parent 7782b8a62f
commit 08bcec5020
5 changed files with 82 additions and 8 deletions
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include/grub/i386/relocator.h
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@ -49,6 +49,7 @@ struct grub_relocator16_state
grub_uint32_t ebx;
grub_uint32_t edx;
grub_uint32_t esi;
grub_uint32_t ebp;
int a20;
};