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Use decompressors framework on i386-pc. It increases core size

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by 46 bytes but improves compatibility and maintainability.

	* grub-core/Makefile.core.def (lzma_decompress): New image.
	(kernel): Add i386_pc_ldflags.
	* grub-core/kern/i386/pc/startup.S: Move intial part to ..
	* grub-core/boot/i386/pc/startup_raw.S: ... here. Pass pointers
	to real_to_prot, prot_to_real and device info.
	* include/grub/offsets.h: Renamed decompressor offsets.
	* util/grub-mkimage.c (grub_compression_t): New cmpression lzma.
	(image_target_desc): Remove raw_size and rename decompressor fields.
	(compress_kernel): Handle lzma.
	(generate_image): Handle decompressors on i386-pc.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2011-11-12 19:53:25 +01:00
parent e9d3421c05
commit 60240b8bc1
12 changed files with 601 additions and 486 deletions
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27
grub-core/kern/i386/realmode.S
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@ -51,6 +51,14 @@
protstack:
.long GRUB_MEMORY_MACHINE_PROT_STACK
.macro PROT_TO_REAL
call prot_to_real
.endm
.macro REAL_TO_PROT
DATA32 call real_to_prot
.endm
/*
* This is the Global Descriptor Table
*
@ -162,6 +170,25 @@ protcseg:
/* return on the old (or initialized) stack! */
ret
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2005,2006,2007,2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/i386/pc/memory.h>
prot_to_real:
/* just in case, set GDT */