146 lines
2.8 KiB
ArmAsm
146 lines
2.8 KiB
ArmAsm
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2013 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/symbol.h>
|
|
#include <grub/xen.h>
|
|
|
|
.p2align 4 /* force 16-byte alignment */
|
|
|
|
VARIABLE(grub_relocator_xen_remap_start)
|
|
LOCAL(base):
|
|
/* mov imm32, %ebx */
|
|
.byte 0xbb
|
|
VARIABLE(grub_relocator_xen_remapper_virt)
|
|
.long 0
|
|
|
|
/* mov imm32, %ecx */
|
|
.byte 0xb9
|
|
VARIABLE(grub_relocator_xen_remapper_map)
|
|
.long 0
|
|
|
|
/* mov imm32, %edx */
|
|
.byte 0xba
|
|
VARIABLE(grub_relocator_xen_remapper_map_high)
|
|
.long 0
|
|
|
|
movl $2, %esi
|
|
movl $__HYPERVISOR_update_va_mapping, %eax
|
|
int $0x82
|
|
|
|
addl $(LOCAL(cont) - LOCAL(base)), %ebx
|
|
|
|
jmp *%ebx
|
|
|
|
LOCAL(cont):
|
|
|
|
/* mov imm32, %ecx */
|
|
.byte 0xb9
|
|
VARIABLE(grub_relocator_xen_paging_size)
|
|
.long 0
|
|
|
|
/* mov imm32, %ebx */
|
|
.byte 0xbb
|
|
VARIABLE(grub_relocator_xen_paging_start)
|
|
.long 0
|
|
|
|
/* mov imm32, %eax */
|
|
.byte 0xb8
|
|
VARIABLE(grub_relocator_xen_mfn_list)
|
|
.long 0
|
|
|
|
movl %eax, %edi
|
|
1:
|
|
movl %ecx, %ebp
|
|
movl 0(%edi), %ecx
|
|
movl %ecx, %edx
|
|
shll $12, %ecx
|
|
shrl $20, %edx
|
|
orl $5, %ecx
|
|
movl $2, %esi
|
|
movl $__HYPERVISOR_update_va_mapping, %eax
|
|
int $0x82
|
|
|
|
movl %ebp, %ecx
|
|
addl $4, %edi
|
|
addl $4096, %ebx
|
|
|
|
loop 1b
|
|
|
|
/* mov imm32, %ebx */
|
|
.byte 0xbb
|
|
VARIABLE(grub_relocator_xen_mmu_op_addr)
|
|
.long 0
|
|
movl $3, %ecx
|
|
movl $0, %edx
|
|
movl $0x7FF0, %esi
|
|
movl $__HYPERVISOR_mmuext_op, %eax
|
|
int $0x82
|
|
|
|
/* mov imm32, %eax */
|
|
.byte 0xb8
|
|
VARIABLE(grub_relocator_xen_remap_continue)
|
|
.long 0
|
|
|
|
jmp *%eax
|
|
|
|
VARIABLE(grub_relocator_xen_mmu_op)
|
|
.space 256
|
|
|
|
VARIABLE(grub_relocator_xen_remap_end)
|
|
|
|
|
|
VARIABLE(grub_relocator_xen_start)
|
|
/* mov imm32, %eax */
|
|
.byte 0xb8
|
|
VARIABLE(grub_relocator_xen_remapper_virt2)
|
|
.long 0
|
|
|
|
movl %eax, %edi
|
|
|
|
xorl %ecx, %ecx
|
|
xorl %edx, %edx
|
|
|
|
movl $2, %esi
|
|
movl $__HYPERVISOR_update_va_mapping, %eax
|
|
int $0x82
|
|
|
|
|
|
/* mov imm32, %eax */
|
|
.byte 0xb8
|
|
VARIABLE(grub_relocator_xen_stack)
|
|
.long 0
|
|
|
|
movl %eax, %esp
|
|
|
|
/* mov imm32, %eax */
|
|
.byte 0xb8
|
|
VARIABLE(grub_relocator_xen_start_info)
|
|
.long 0
|
|
|
|
movl %eax, %esi
|
|
|
|
cld
|
|
|
|
/* mov imm32, %eax */
|
|
.byte 0xb8
|
|
VARIABLE(grub_relocator_xen_entry_point)
|
|
.long 0
|
|
|
|
jmp *%eax
|
|
|
|
VARIABLE(grub_relocator_xen_end)
|