grub/grub-core/kern/i386/qemu/startup.S
Vladimir 'phcoder' Serbinenko a97501d238 Make grub_prefix into module to fix the arbitrary limit and save
some space.

	* grub-core/kern/emu/main.c (grub_prefix): Removed.
	* grub-core/kern/i386/coreboot/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/efi/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/ieee1275/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/pc/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/qemu/startup.S (grub_prefix): Likewise.
	* grub-core/kern/ia64/efi/startup.S (grub_prefix): Likewise.
	* grub-core/kern/mips/startup.S (grub_prefix): Likewise.
	* grub-core/kern/powerpc/ieee1275/startup.S (grub_prefix): Likewise.
	* grub-core/kern/sparc64/ieee1275/crt0.S (grub_prefix): Likewise.
	* grub-core/kern/x86_64/efi/startup.S (grub_prefix): Likewise.
	* include/grub/ia64/efi/kernel.h: Removed.
	* include/grub/kernel.h: New module type OBJ_TYPE_PREFIX.
	(grub_prefix): Removed.
	* include/grub/offsets.h (GRUB_KERNEL_I386_PC_PREFIX): Removed.
	(GRUB_KERNEL_I386_PC_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_QEMU_PREFIX): Likewise.
	(GRUB_KERNEL_I386_QEMU_PREFIX_END): Likewise.
	(GRUB_KERNEL_SPARC64_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_POWERPC_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_LOONGSON_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_LOONGSON_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_ARC_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_ARC_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_I386_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_IA64_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_IA64_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_X86_64_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_X86_64_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_COREBOOT_PREFIX): Likewise.
	(GRUB_KERNEL_I386_COREBOOT_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_MULTIBOOT_PREFIX): Likewise.
	(GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_I386_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_MACHINE_PREFIX): Likewise.
	(GRUB_KERNEL_MACHINE_PREFIX_END): Likewise.
	* grub-core/kern/main.c (grub_set_prefix_and_root): Retrieve grub_prefix
	from module.
	* util/grub-mkimage.c (image_target_desc): Removed prefix and
	prefix_end.
	(image_targets): Likewise.
	(generate_image): Put prefix as a module.
2011-10-18 15:21:51 +02:00

96 lines
2.1 KiB
ArmAsm

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2005,2006,2007,2008,2009 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 <config.h>
#include <grub/symbol.h>
#include <grub/i386/pc/memory.h>
#include <grub/machine/memory.h>
#include <grub/machine/kernel.h>
.text
.code32
.globl _start
_start:
jmp codestart
. = _start + GRUB_KERNEL_I386_QEMU_CORE_ENTRY_ADDR
VARIABLE(grub_core_entry_addr)
.long 0
VARIABLE(grub_kernel_image_size)
.long 0
codestart:
/* Relocate to low memory. First we figure out our location.
We will derive the rom start address from it. */
call 1f
1: popl %esi
/* Rom size is a multiple of 64 kiB. With this we get the
value of `grub_core_entry_addr' in %esi. */
xorw %si, %si
/* ... which allows us to access `grub_kernel_image_size'
before relocation. */
movl (grub_kernel_image_size - _start)(%esi), %ecx
movl $_start, %edi
cld
rep
movsb
ljmp $GRUB_MEMORY_MACHINE_PROT_MODE_CSEG, $1f
1:
#ifdef APPLE_CC
/* clean out the bss */
bss_start_abs = ABS (bss_start)
bss_end_abs = ABS (bss_end)
movl bss_start_abs, %edi
/* compute the bss length */
movl bss_end_abs, %ecx
subl %edi, %ecx
#else
/* clean out the bss */
movl $BSS_START_SYMBOL, %edi
/* compute the bss length */
movl $END_SYMBOL, %ecx
subl %edi, %ecx
#endif
/* clean out */
xorl %eax, %eax
cld
rep
stosb
/*
* Call the start of main body of C code.
*/
call EXT_C(grub_main)
/* This should never happen. */
cli
1:
hlt
jmp 1b
#include "../realmode.S"