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Add new ports: i386-xen and x86_64-xen. This allows running GRUB in

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XEN PV environment and load kernels.
This commit is contained in:
Vladimir Serbinenko 2013-11-09 21:29:11 +01:00
parent 1a46a3a4b3
commit 9612ebc00e
59 changed files with 4167 additions and 259 deletions
Download patch file Download diff file Expand all files Collapse all files

1
grub-core/lib/i386/reboot.c
View file

@ -58,4 +58,3 @@ grub_reboot (void)
while (1);
}

82
grub-core/lib/i386/relocator.c
View file

@ -28,19 +28,6 @@
#include <grub/i386/relocator_private.h>
#include <grub/i386/pc/int.h>
extern grub_uint8_t grub_relocator_forward_start;
extern grub_uint8_t grub_relocator_forward_end;
extern grub_uint8_t grub_relocator_backward_start;
extern grub_uint8_t grub_relocator_backward_end;
extern void *grub_relocator_backward_dest;
extern void *grub_relocator_backward_src;
extern grub_size_t grub_relocator_backward_chunk_size;
extern void *grub_relocator_forward_dest;
extern void *grub_relocator_forward_src;
extern grub_size_t grub_relocator_forward_chunk_size;
extern grub_uint8_t grub_relocator16_start;
extern grub_uint8_t grub_relocator16_end;
extern grub_uint16_t grub_relocator16_cs;
@ -85,75 +72,6 @@ extern struct grub_i386_idt grub_relocator16_idt;
#define RELOCATOR_SIZEOF(x) (&grub_relocator##x##_end - &grub_relocator##x##_start)
grub_size_t grub_relocator_align = 1;
grub_size_t grub_relocator_forward_size;
grub_size_t grub_relocator_backward_size;
#ifdef __x86_64__
grub_size_t grub_relocator_jumper_size = 12;
#else
grub_size_t grub_relocator_jumper_size = 7;
#endif
void
grub_cpu_relocator_init (void)
{
grub_relocator_forward_size = RELOCATOR_SIZEOF(_forward);
grub_relocator_backward_size = RELOCATOR_SIZEOF(_backward);
}
void
grub_cpu_relocator_jumper (void *rels, grub_addr_t addr)
{
grub_uint8_t *ptr;
ptr = rels;
#ifdef __x86_64__
/* movq imm64, %rax (for relocator) */
*(grub_uint8_t *) ptr = 0x48;
ptr++;
*(grub_uint8_t *) ptr = 0xb8;
ptr++;
*(grub_uint64_t *) ptr = addr;
ptr += sizeof (grub_uint64_t);
#else
/* movl imm32, %eax (for relocator) */
*(grub_uint8_t *) ptr = 0xb8;
ptr++;
*(grub_uint32_t *) ptr = addr;
ptr += sizeof (grub_uint32_t);
#endif
/* jmp $eax/$rax */
*(grub_uint8_t *) ptr = 0xff;
ptr++;
*(grub_uint8_t *) ptr = 0xe0;
ptr++;
}
void
grub_cpu_relocator_backward (void *ptr, void *src, void *dest,
grub_size_t size)
{
grub_relocator_backward_dest = dest;
grub_relocator_backward_src = src;
grub_relocator_backward_chunk_size = size;
grub_memmove (ptr,
&grub_relocator_backward_start,
RELOCATOR_SIZEOF (_backward));
}
void
grub_cpu_relocator_forward (void *ptr, void *src, void *dest,
grub_size_t size)
{
grub_relocator_forward_dest = dest;
grub_relocator_forward_src = src;
grub_relocator_forward_chunk_size = size;
grub_memmove (ptr,
&grub_relocator_forward_start,
RELOCATOR_SIZEOF (_forward));
}
grub_err_t
grub_relocator32_boot (struct grub_relocator *rel,
struct grub_relocator32_state state,

109
grub-core/lib/i386/relocator_common_c.c Normal file
View file

@ -0,0 +1,109 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009-2013 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/mm.h>
#include <grub/misc.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/term.h>
#include <grub/relocator.h>
#include <grub/relocator_private.h>
extern grub_uint8_t grub_relocator_forward_start;
extern grub_uint8_t grub_relocator_forward_end;
extern grub_uint8_t grub_relocator_backward_start;
extern grub_uint8_t grub_relocator_backward_end;
extern void *grub_relocator_backward_dest;
extern void *grub_relocator_backward_src;
extern grub_size_t grub_relocator_backward_chunk_size;
extern void *grub_relocator_forward_dest;
extern void *grub_relocator_forward_src;
extern grub_size_t grub_relocator_forward_chunk_size;
#define RELOCATOR_SIZEOF(x) (&grub_relocator##x##_end - &grub_relocator##x##_start)
grub_size_t grub_relocator_align = 1;
grub_size_t grub_relocator_forward_size;
grub_size_t grub_relocator_backward_size;
#ifdef __x86_64__
grub_size_t grub_relocator_jumper_size = 12;
#else
grub_size_t grub_relocator_jumper_size = 7;
#endif
void
grub_cpu_relocator_init (void)
{
grub_relocator_forward_size = RELOCATOR_SIZEOF (_forward);
grub_relocator_backward_size = RELOCATOR_SIZEOF (_backward);
}
void
grub_cpu_relocator_jumper (void *rels, grub_addr_t addr)
{
grub_uint8_t *ptr;
ptr = rels;
#ifdef __x86_64__
/* movq imm64, %rax (for relocator) */
*(grub_uint8_t *) ptr = 0x48;
ptr++;
*(grub_uint8_t *) ptr = 0xb8;
ptr++;
*(grub_uint64_t *) ptr = addr;
ptr += sizeof (grub_uint64_t);
#else
/* movl imm32, %eax (for relocator) */
*(grub_uint8_t *) ptr = 0xb8;
ptr++;
*(grub_uint32_t *) ptr = addr;
ptr += sizeof (grub_uint32_t);
#endif
/* jmp $eax/$rax */
*(grub_uint8_t *) ptr = 0xff;
ptr++;
*(grub_uint8_t *) ptr = 0xe0;
ptr++;
}
void
grub_cpu_relocator_backward (void *ptr, void *src, void *dest,
grub_size_t size)
{
grub_relocator_backward_dest = dest;
grub_relocator_backward_src = src;
grub_relocator_backward_chunk_size = size;
grub_memmove (ptr,
&grub_relocator_backward_start, RELOCATOR_SIZEOF (_backward));
}
void
grub_cpu_relocator_forward (void *ptr, void *src, void *dest,
grub_size_t size)
{
grub_relocator_forward_dest = dest;
grub_relocator_forward_src = src;
grub_relocator_forward_chunk_size = size;
grub_memmove (ptr,
&grub_relocator_forward_start, RELOCATOR_SIZEOF (_forward));
}

146
grub-core/lib/i386/xen/relocator.S Normal file
View file

@ -0,0 +1,146 @@
/*
* 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)

3
grub-core/lib/legacy_parse.c
View file

@ -250,6 +250,9 @@ static struct legacy_command legacy_commands[] =
{"pause", "echo %s; if ! sleep -i 60; then return; fi\n", NULL, 0, 1,
{TYPE_REST_VERBATIM}, 0,
"[MESSAGE ...]", "Print MESSAGE, then wait until a key is pressed."},
{"print", "echo %s\n", NULL, 0, 1,
{TYPE_REST_VERBATIM}, 0,
"[MESSAGE ...]", "Print MESSAGE."},
/* FIXME: quit unsupported. */
/* FIXME: rarp unsupported. */
{"read", "read_dword %s\n", NULL, 0, 1, {TYPE_INT}, 0, "ADDR",

2
grub-core/lib/relocator.c
View file

@ -1432,7 +1432,7 @@ grub_relocator_alloc_chunk_align (struct grub_relocator *rel,
#ifdef GRUB_MACHINE_EFI
grub_efi_mmap_iterate (grub_relocator_alloc_chunk_align_iter, &ctx,
avoid_efi_boot_services);
#elif defined (__powerpc__)
#elif defined (__powerpc__) || defined (GRUB_MACHINE_XEN)
(void) avoid_efi_boot_services;
grub_machine_mmap_iterate (grub_relocator_alloc_chunk_align_iter, &ctx);
#else

154
grub-core/lib/x86_64/xen/relocator.S Normal file
View file

@ -0,0 +1,154 @@
/*
* 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 imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_virt)
.quad 0
movq %rax, %rdi
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_map)
.quad 0
movq %rax, %rsi
movq $2, %rdx
movq $__HYPERVISOR_update_va_mapping, %rax
syscall
addq $(LOCAL(cont) - LOCAL(base)), %rdi
jmp *%rdi
LOCAL(cont):
/* mov imm64, %rcx */
.byte 0x48
.byte 0xb9
VARIABLE(grub_relocator_xen_paging_size)
.quad 0
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_paging_start)
.quad 0
movq %rax, %rdi
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_mfn_list)
.quad 0
movq %rax, %rsi
1:
movq %rsi, %rbx
movq 0(%rsi), %rsi
shlq $12, %rsi
orq $5, %rsi
movq $2, %rdx
movq %rcx, %r9
movq $__HYPERVISOR_update_va_mapping, %rax
syscall
movq %r9, %rcx
addq $8, %rbx
addq $4096, %rdi
movq %rbx, %rsi
loop 1b
leaq EXT_C(grub_relocator_xen_mmu_op) (%rip), %rdi
movq $3, %rsi
movq $0, %rdx
movq $0x7FF0, %r10
movq $__HYPERVISOR_mmuext_op, %rax
syscall
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remap_continue)
.quad 0
jmp *%rax
VARIABLE(grub_relocator_xen_mmu_op)
.space 256
VARIABLE(grub_relocator_xen_remap_end)
VARIABLE(grub_relocator_xen_start)
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_remapper_virt2)
.quad 0
movq %rax, %rdi
xorq %rax, %rax
movq %rax, %rsi
movq $2, %rdx
movq $__HYPERVISOR_update_va_mapping, %rax
syscall
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_stack)
.quad 0
movq %rax, %rsp
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_start_info)
.quad 0
movq %rax, %rsi
cld
/* mov imm64, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_relocator_xen_entry_point)
.quad 0
jmp *%rax
VARIABLE(grub_relocator_xen_end)

40
grub-core/lib/xen/datetime.c Normal file
View file

@ -0,0 +1,40 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2011 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/datetime.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/xen.h>
GRUB_MOD_LICENSE ("GPLv3+");
grub_err_t
grub_get_datetime (struct grub_datetime *datetime)
{
long long nix;
nix = (grub_xen_shared_info->wc_sec
+ grub_divmod64 (grub_xen_shared_info->vcpu_info[0].time.system_time, 1000000000, 0));
grub_unixtime2datetime (nix, datetime);
return GRUB_ERR_NONE;
}
grub_err_t
grub_set_datetime (struct grub_datetime *datetime __attribute__ ((unused)))
{
return grub_error (GRUB_ERR_IO, "setting time isn't supported");
}

32
grub-core/lib/xen/halt.c Normal file
View file

@ -0,0 +1,32 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2011 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/mm.h>
#include <grub/misc.h>
#include <grub/kernel.h>
#include <grub/xen.h>
void
grub_halt (void)
{
struct sched_shutdown arg;
arg.reason = SHUTDOWN_poweroff;
grub_xen_sched_op (SCHEDOP_shutdown, &arg);
for (;;);
}

32
grub-core/lib/xen/reboot.c Normal file
View file

@ -0,0 +1,32 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2011 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/mm.h>
#include <grub/misc.h>
#include <grub/kernel.h>
#include <grub/xen.h>
void
grub_reboot (void)
{
struct sched_shutdown arg;
arg.reason = SHUTDOWN_reboot;
grub_xen_sched_op (SCHEDOP_shutdown, &arg);
for (;;);
}

125
grub-core/lib/xen/relocator.c Normal file
View file

@ -0,0 +1,125 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 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 <grub/mm.h>
#include <grub/misc.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/term.h>
#include <grub/xen.h>
#include <grub/xen/relocator.h>
#include <grub/relocator_private.h>
typedef grub_addr_t grub_xen_reg_t;
extern grub_uint8_t grub_relocator_xen_start;
extern grub_uint8_t grub_relocator_xen_end;
extern grub_uint8_t grub_relocator_xen_remap_start;
extern grub_uint8_t grub_relocator_xen_remap_end;
extern grub_xen_reg_t grub_relocator_xen_stack;
extern grub_xen_reg_t grub_relocator_xen_start_info;
extern grub_xen_reg_t grub_relocator_xen_entry_point;
extern grub_xen_reg_t grub_relocator_xen_paging_start;
extern grub_xen_reg_t grub_relocator_xen_paging_size;
extern grub_xen_reg_t grub_relocator_xen_remapper_virt;
extern grub_xen_reg_t grub_relocator_xen_remapper_virt2;
extern grub_xen_reg_t grub_relocator_xen_remapper_map;
extern grub_xen_reg_t grub_relocator_xen_mfn_list;
extern grub_xen_reg_t grub_relocator_xen_remap_continue;
#ifdef __i386__
extern grub_xen_reg_t grub_relocator_xen_mmu_op_addr;
extern grub_xen_reg_t grub_relocator_xen_remapper_map_high;
#endif
extern mmuext_op_t grub_relocator_xen_mmu_op[3];
#define RELOCATOR_SIZEOF(x) (&grub_relocator##x##_end - &grub_relocator##x##_start)
grub_err_t
grub_relocator_xen_boot (struct grub_relocator *rel,
struct grub_relocator_xen_state state,
grub_uint64_t remapper_pfn,
grub_addr_t remapper_virt,
grub_uint64_t trampoline_pfn,
grub_addr_t trampoline_virt)
{
grub_err_t err;
void *relst;
grub_relocator_chunk_t ch, ch_tramp;
grub_xen_mfn_t *mfn_list =
(grub_xen_mfn_t *) grub_xen_start_page_addr->mfn_list;
err = grub_relocator_alloc_chunk_addr (rel, &ch, remapper_pfn << 12,
RELOCATOR_SIZEOF (_xen_remap));
if (err)
return err;
err = grub_relocator_alloc_chunk_addr (rel, &ch_tramp, trampoline_pfn << 12,
RELOCATOR_SIZEOF (_xen));
if (err)
return err;
grub_relocator_xen_stack = state.stack;
grub_relocator_xen_start_info = state.start_info;
grub_relocator_xen_entry_point = state.entry_point;
grub_relocator_xen_paging_start = state.paging_start << 12;
grub_relocator_xen_paging_size = state.paging_size;
grub_relocator_xen_remapper_virt = remapper_virt;
grub_relocator_xen_remapper_virt2 = remapper_virt;
grub_relocator_xen_remap_continue = trampoline_virt;
grub_relocator_xen_remapper_map = (mfn_list[remapper_pfn] << 12) | 5;
#ifdef __i386__
grub_relocator_xen_remapper_map_high = (mfn_list[remapper_pfn] >> 20);
grub_relocator_xen_mmu_op_addr = (char *) &grub_relocator_xen_mmu_op
- (char *) &grub_relocator_xen_remap_start + remapper_virt;
#endif
grub_relocator_xen_mfn_list = state.mfn_list
+ state.paging_start * sizeof (grub_addr_t);
grub_memset (grub_relocator_xen_mmu_op, 0,
sizeof (grub_relocator_xen_mmu_op));
#ifdef __i386__
grub_relocator_xen_mmu_op[0].cmd = MMUEXT_PIN_L3_TABLE;
#else
grub_relocator_xen_mmu_op[0].cmd = MMUEXT_PIN_L4_TABLE;
#endif
grub_relocator_xen_mmu_op[0].arg1.mfn = mfn_list[state.paging_start];
grub_relocator_xen_mmu_op[1].cmd = MMUEXT_NEW_BASEPTR;
grub_relocator_xen_mmu_op[1].arg1.mfn = mfn_list[state.paging_start];
grub_relocator_xen_mmu_op[2].cmd = MMUEXT_UNPIN_TABLE;
grub_relocator_xen_mmu_op[2].arg1.mfn =
mfn_list[grub_xen_start_page_addr->pt_base >> 12];
grub_memmove (get_virtual_current_address (ch),
&grub_relocator_xen_remap_start,
RELOCATOR_SIZEOF (_xen_remap));
grub_memmove (get_virtual_current_address (ch_tramp),
&grub_relocator_xen_start, RELOCATOR_SIZEOF (_xen));
err = grub_relocator_prepare_relocs (rel, get_physical_target_address (ch),
&relst, NULL);
if (err)
return err;
((void (*)(void)) relst) ();
/* Not reached. */
return GRUB_ERR_NONE;
}