22f53a96fd
trampoline for linux on 64-bit platform * conf/x86_64-efi.rmk (linux_mod_SOURCES): added loader/i386/efi/linux_trampoline.S * include/grub/x86_64/efi/loader.h (grub_linux_real_boot): removed declration * kern/x86_64/efi/startup.S (grub_linux_real_boot): moved from here * loader/i386/linux_trampoline.S: moved here * loader/i386/efi/linux.c (allocate_pages): reserve space for trampoline (jumpvector): removed (grub_linux_trampoline_start): new declaration (grub_linux_trampoline_end): likewise (grub_linux_boot): use trampoline when on 64-bit platform * loader/i386/linux.c: likewise
63 lines
1.6 KiB
ArmAsm
63 lines
1.6 KiB
ArmAsm
/* startup.S - bootstrap GRUB itself */
|
|
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2006,2007,2009 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/boot.h>
|
|
|
|
.file "startup.S"
|
|
.text
|
|
.globl start, _start
|
|
.code64
|
|
|
|
start:
|
|
_start:
|
|
jmp codestart
|
|
|
|
/*
|
|
* Compatibility version number
|
|
*
|
|
* These MUST be at byte offset 6 and 7 of the executable
|
|
* DO NOT MOVE !!!
|
|
*/
|
|
. = _start + 0x6
|
|
.byte GRUB_BOOT_VERSION_MAJOR, GRUB_BOOT_VERSION_MINOR
|
|
|
|
/*
|
|
* This is a special data area 8 bytes from the beginning.
|
|
*/
|
|
|
|
. = _start + 0x8
|
|
|
|
VARIABLE(grub_prefix)
|
|
/* to be filled by grub-mkimage */
|
|
|
|
/*
|
|
* Leave some breathing room for the prefix.
|
|
*/
|
|
|
|
. = _start + 0x50
|
|
|
|
codestart:
|
|
movq %rcx, EXT_C(grub_efi_image_handle)(%rip)
|
|
movq %rdx, EXT_C(grub_efi_system_table)(%rip)
|
|
|
|
call EXT_C(grub_main)
|
|
ret
|
|
|