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Merge relocators into mips

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2009-12-02 09:55:04 +01:00
commit 537ee0a5f1
12 changed files with 148 additions and 290 deletions
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77
ChangeLog.relocators Normal file
View file

@ -0,0 +1,77 @@
2009-11-28 Vladimir Serbinenko <phcoder@gmail.com>
Relocator framework
* THANKS: Add David Miller.
* loader/i386/xnu_helper.S: Removed. All users updated.
* conf/i386.rmk (pkglib_MODULES): Add relocator.mod.
(relocator_mod_SOURCES): New variable.
(relocator_mod_CFLAGS): Likewise.
(relocator_mod_LDFLAGS): Likewise.
(relocator_mod_ASFLAGS): Likewise.
* conf/x86_64.rmk: Likewise.
* include/grub/i386/multiboot.h (grub_multiboot_payload_orig): Removed.
(grub_multiboot_payload_entry_offset): Likewise.
(grub_multiboot_forward_relocator): Likewise.
(grub_multiboot_forward_relocator_end): Likewise.
(grub_multiboot_backward_relocator): Likewise.
(grub_multiboot_backward_relocator_end): Likewise.
(grub_multiboot_payload_eip): New variable.
(grub_multiboot_payload_orig): Likewise.
(GRUB_MULTIBOOT_STACK_SIZE): New definition.
* include/grub/i386/pc/memory.h: Include grub/i386/memory.h.
(GRUB_MEMORY_MACHINE_CR0_PE_ON): Move from here ...
* include/grub/i386/memory.h
(GRUB_MEMORY_CPU_CR0_PE_ON): ... to here
(GRUB_MEMORY_CPU_CR4_PAE_ON): New definition.
(GRUB_MEMORY_CPU_CR0_PAGING_ON): Likewise.
(GRUB_MEMORY_CPU_AMD64_MSR): Likewise.
(GRUB_MEMORY_CPU_AMD64_MSR_ON): Likewise.
* include/grub/i386/relocator.h: New file.
* include/grub/x86_64/relocator.h: Likewise.
* include/grub/i386/xnu.h: Include grub/cpu/relocator.h.
(XNU_RELOCATOR): New macro.
(grub_xnu_launcher_start): Remove.
(grub_xnu_launcher_end): Likewise.
* include/grub/xnu.h (grub_xnu_boot_resume): New prototype.
(grub_xnu_heap_real_start): Remove.
(grub_xnu_heap_start): Change to void *. All users updated.
* kern/i386/realmode.S (real_to_prot): Use GRUB_MEMORY_CPU_CR0_PE_ON.
* lib/i386/relocator.c: New file.
* lib/i386/relocator_asm.S: Likewise.
* lib/i386/relocator_backward.S: Likewise.
* lib/mips/relocator.c: Likewise.
* lib/mips/relocator_asm.S: Likewise.
* lib/relocator.c: Likewise.
* loader/i386/multiboot.c: Include grub/i386/relocator.h.
(entry): Removed.
(playground): Likewise.
(grub_multiboot_payload_orig): New variable.
(grub_multiboot_payload_dest): Likewise.
(grub_multiboot_payload_size): Likewise.
(grub_multiboot_payload_eip): Likewise.
(grub_multiboot_payload_esp): Likewise.
(grub_multiboot_boot): Use grub_relocator32_boot.
(grub_multiboot_unload): Free relocators.
(grub_multiboot): Setup stack. Use relocators.
* loader/i386/multiboot_elfxx.c: Include grub/i386/relocator.h.
(grub_multiboot_load_elfXX): Use relocators.
* loader/i386/multiboot_helper.S (grub_multiboot_payload_orig): Removed.
(grub_multiboot_payload_size): Likewise.
(grub_multiboot_payload_dest): Likewise.
(grub_multiboot_payload_entry_offset): Likewise.
(grub_multiboot_forward_relocator): Likewise.
(grub_multiboot_backward_relocator): Likewise.
(grub_multiboot_real_boot): Likewise.
* loader/i386/xnu.c (grub_xnu_heap_will_be_at): New variable.
(grub_xnu_entry_point): Likewise.
(grub_xnu_arg1): Likewise.
(grub_xnu_stack): Likewise.
(grub_xnu_launch): Removed.
(grub_xnu_boot_resume): New function.
(grub_xnu_boot): Use relocators.
* loader/i386/xnu_helper.S: Removed.
* loader/xnu.c (grub_xnu_heap_start): New variable.
(grub_xnu_heap_size): Likewise.
(grub_xnu_heap_malloc): Use relocators.
* loader/xnu_resume.c (grub_xnu_resume): Use relocators.

2
conf/i386-efi.rmk
View file

@ -155,7 +155,7 @@ efi_gop_mod_LDFLAGS = $(COMMON_LDFLAGS)
pkglib_MODULES += xnu.mod
xnu_mod_SOURCES = loader/xnu_resume.c loader/i386/xnu.c loader/i386/efi/xnu.c\
loader/macho.c loader/xnu.c loader/i386/xnu_helper.S
loader/macho.c loader/xnu.c
xnu_mod_CFLAGS = $(COMMON_CFLAGS)
xnu_mod_LDFLAGS = $(COMMON_LDFLAGS)
xnu_mod_ASFLAGS = $(COMMON_ASFLAGS)

2
conf/i386-pc.rmk
View file

@ -184,7 +184,7 @@ linux_mod_LDFLAGS = $(COMMON_LDFLAGS)
pkglib_MODULES += xnu.mod
xnu_mod_SOURCES = loader/xnu_resume.c loader/i386/xnu.c loader/i386/pc/xnu.c\
loader/macho.c loader/xnu.c loader/i386/xnu_helper.S
loader/macho.c loader/xnu.c
xnu_mod_CFLAGS = $(COMMON_CFLAGS)
xnu_mod_LDFLAGS = $(COMMON_LDFLAGS)
xnu_mod_ASFLAGS = $(COMMON_ASFLAGS)

8
conf/x86_64-efi.rmk
View file

@ -161,9 +161,15 @@ efi_gop_mod_LDFLAGS = $(COMMON_LDFLAGS)
pkglib_MODULES += xnu.mod
xnu_mod_SOURCES = loader/xnu_resume.c loader/i386/xnu.c loader/i386/efi/xnu.c\
loader/macho.c loader/xnu.c loader/i386/xnu_helper.S
loader/macho.c loader/xnu.c
xnu_mod_CFLAGS = $(COMMON_CFLAGS)
xnu_mod_LDFLAGS = $(COMMON_LDFLAGS)
xnu_mod_ASFLAGS = $(COMMON_ASFLAGS)
pkglib_MODULES += relocator.mod
relocator_mod_SOURCES = lib/i386/relocator.c lib/i386/relocator_asm.S lib/i386/relocator_backward.S
relocator_mod_CFLAGS = $(COMMON_CFLAGS)
relocator_mod_ASFLAGS = $(COMMON_ASFLAGS)
relocator_mod_LDFLAGS = $(COMMON_LDFLAGS)
include $(srcdir)/conf/common.mk

5
include/grub/i386/xnu.h
View file

@ -20,6 +20,9 @@
#define GRUB_CPU_XNU_H 1
#include <grub/err.h>
#include <grub/cpu/relocator.h>
#define XNU_RELOCATOR(x) (grub_relocator32_ ## x)
#define GRUB_XNU_PAGESIZE 4096
typedef grub_uint32_t grub_xnu_ptr_t;
@ -75,6 +78,4 @@ grub_err_t grub_xnu_boot (void);
grub_err_t grub_cpu_xnu_fill_devicetree (void);
grub_err_t grub_xnu_set_video (struct grub_xnu_boot_params *bootparams_relloc);
extern grub_uint32_t grub_xnu_heap_will_be_at;
extern grub_uint8_t grub_xnu_launcher_start[];
extern grub_uint8_t grub_xnu_launcher_end[];
#endif

1
include/grub/x86_64/relocator.h Normal file
View file

@ -0,0 +1 @@
#include <grub/i386/relocator.h>

4
include/grub/xnu.h
View file

@ -92,6 +92,7 @@ struct grub_xnu_devtree_key *grub_xnu_create_value (struct grub_xnu_devtree_key
void grub_xnu_lock (void);
void grub_xnu_unlock (void);
grub_err_t grub_xnu_resume (char *imagename);
grub_err_t grub_xnu_boot_resume (void);
struct grub_xnu_devtree_key *grub_xnu_find_key (struct grub_xnu_devtree_key *parent,
char *name);
grub_err_t grub_xnu_align_heap (int align);
@ -100,8 +101,7 @@ grub_err_t grub_xnu_scan_dir_for_kexts (char *dirname, char *osbundlerequired,
grub_err_t grub_xnu_load_kext_from_dir (char *dirname, char *osbundlerequired,
int maxrecursion);
void *grub_xnu_heap_malloc (int size);
extern grub_uint32_t grub_xnu_heap_real_start;
extern grub_size_t grub_xnu_heap_size;
extern char *grub_xnu_heap_start;
extern void *grub_xnu_heap_start;
extern struct grub_video_bitmap *grub_xnu_bitmap;
#endif

17
lib/relocator.c
View file

@ -41,6 +41,9 @@ PREFIX (realloc) (void *relocator, grub_size_t size)
{
char *playground;
if (!relocator)
return PREFIX (alloc) (size);
playground = (char *) relocator - PRE_REGION_SIZE;
playground = grub_realloc (playground, size + MAX_OVERHEAD);
@ -70,8 +73,8 @@ PREFIX (boot) (void *relocator, grub_uint32_t dest,
size = *(grub_size_t *) playground;
grub_dprintf ("relocator",
"Relocator: source: %p, destination: 0x%x, size: 0x%x\n",
relocator, dest, size);
"Relocator: source: %p, destination: 0x%x, size: 0x%lx\n",
relocator, (unsigned) dest, (unsigned long) size);
/* Very unlikely condition: Relocator may risk overwrite itself.
Just move it a bit up. */
@ -100,10 +103,11 @@ PREFIX (boot) (void *relocator, grub_uint32_t dest,
RELOCATOR_ALIGN);
grub_dprintf ("relocator",
"Backward relocator: code %p, source: %p, "
"destination: 0x%x, size: 0x%x\n",
"destination: 0x%x, size: 0x%lx\n",
(char *) relocator - overhead,
(char *) relocator - overhead,
dest - overhead, size + overhead);
(unsigned) dest - overhead,
(unsigned long) size + overhead);
write_call_relocator_bw ((char *) relocator - overhead,
(char *) relocator - overhead,
@ -117,10 +121,11 @@ PREFIX (boot) (void *relocator, grub_uint32_t dest,
+ RELOCATOR_SIZEOF (forward) - (dest + size);
grub_dprintf ("relocator",
"Forward relocator: code %p, source: %p, "
"destination: 0x%x, size: 0x%x\n",
"destination: 0x%x, size: 0x%lx\n",
(char *) relocator + size + overhead
- RELOCATOR_SIZEOF (forward),
relocator, dest, size + overhead);
relocator, (unsigned) dest,
(unsigned long) size + overhead);
write_call_relocator_fw ((char *) relocator + size + overhead
- RELOCATOR_SIZEOF (forward),

53
loader/i386/xnu.c
View file

@ -30,6 +30,8 @@
#include <grub/term.h>
char grub_xnu_cmdline[1024];
grub_uint32_t grub_xnu_heap_will_be_at;
grub_uint32_t grub_xnu_entry_point, grub_xnu_arg1, grub_xnu_stack;
/* Aliases set for some tables. */
struct tbl_alias
@ -44,21 +46,6 @@ struct tbl_alias table_aliases[] =
{GRUB_EFI_ACPI_TABLE_GUID, "ACPI"},
};
/* The following function is used to be able to debug xnu loader
with grub-emu. */
#ifdef GRUB_UTIL
static grub_err_t
grub_xnu_launch (void)
{
grub_printf ("Fake launch %x:%p:%p", grub_xnu_entry_point, grub_xnu_arg1,
grub_xnu_stack);
grub_getkey ();
return 0;
}
#else
static void (*grub_xnu_launch) (void) = 0;
#endif
static int
utf16_strlen (grub_uint16_t *in)
{
@ -417,6 +404,19 @@ grub_cpu_xnu_fill_devicetree (void)
return GRUB_ERR_NONE;
}
grub_err_t
grub_xnu_boot_resume (void)
{
struct grub_relocator32_state state;
state.esp = grub_xnu_stack;
state.eip = grub_xnu_entry_point;
state.eax = grub_xnu_arg1;
return grub_relocator32_boot (grub_xnu_heap_start, grub_xnu_heap_will_be_at,
state);
}
/* Boot xnu. */
grub_err_t
grub_xnu_boot (void)
@ -434,6 +434,7 @@ grub_xnu_boot (void)
void *devtree;
grub_size_t devtreelen;
int i;
struct grub_relocator32_state state;
/* Page-align to avoid following parts to be inadvertently freed. */
err = grub_xnu_align_heap (GRUB_XNU_PAGESIZE);
@ -501,7 +502,8 @@ grub_xnu_boot (void)
grub_memcpy (bootparams_relloc->cmdline, grub_xnu_cmdline,
sizeof (bootparams_relloc->cmdline));
bootparams_relloc->devtree = ((char *) devtree - grub_xnu_heap_start)
bootparams_relloc->devtree
= ((grub_uint8_t *) devtree - (grub_uint8_t *) grub_xnu_heap_start)
+ grub_xnu_heap_will_be_at;
bootparams_relloc->devtreelen = devtreelen;
@ -529,12 +531,7 @@ grub_xnu_boot (void)
grub_xnu_stack = bootparams_relloc->heap_start
+ bootparams_relloc->heap_size + GRUB_XNU_PAGESIZE;
grub_xnu_arg1 = bootparams_relloc_off + grub_xnu_heap_will_be_at;
#ifndef GRUB_UTIL
grub_xnu_launch = (void (*) (void))
(grub_xnu_heap_start + grub_xnu_heap_size);
#endif
grub_dprintf ("xnu", "eip=%x\n", grub_xnu_entry_point);
grub_dprintf ("xnu", "launch=%p\n", grub_xnu_launch);
const char *debug = grub_env_get ("debug");
@ -560,16 +557,12 @@ grub_xnu_boot (void)
bootparams_relloc->lfb_base = 0;
}
grub_memcpy (grub_xnu_heap_start + grub_xnu_heap_size,
grub_xnu_launcher_start,
grub_xnu_launcher_end - grub_xnu_launcher_start);
if (! grub_autoefi_finish_boot_services ())
return grub_error (GRUB_ERR_IO, "can't exit boot services");
grub_xnu_launch ();
/* Never reaches here. */
return 0;
state.eip = grub_xnu_entry_point;
state.eax = grub_xnu_arg1;
state.esp = grub_xnu_stack;
return grub_relocator32_boot (grub_xnu_heap_start, grub_xnu_heap_will_be_at,
state);
}

211
loader/i386/xnu_helper.S
View file

@ -1,211 +0,0 @@
/*
* 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/symbol.h>
.p2align 4 /* force 16-byte alignment */
VARIABLE(grub_xnu_launcher_start)
base:
cli
#ifndef __x86_64__
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_xnu_heap_will_be_at)
.long 0
mov %eax, %edi
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_xnu_heap_start)
.long 0
mov %eax, %esi
/* mov imm32, %ecx */
.byte 0xb9
VARIABLE(grub_xnu_heap_size)
.long 0
mov %edi, %eax
add %ecx, %eax
/* %rax now contains our starting position after relocation. */
/* One more page to copy: ourselves. */
add $0x403, %ecx
shr $2, %ecx
/* Forward copy. */
cld
rep
movsl
mov %eax, %esi
add $(cont0-base), %eax
jmp *%eax
cont0:
#else
xorq %rax, %rax
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_xnu_heap_will_be_at)
.long 0
mov %rax, %rdi
/* mov imm32, %rax */
.byte 0x48
.byte 0xb8
VARIABLE(grub_xnu_heap_start)
.long 0
.long 0
mov %rax, %rsi
/* mov imm32, %rcx */
.byte 0x48
.byte 0xb9
VARIABLE(grub_xnu_heap_size)
.long 0
.long 0
mov %rdi, %rax
add %rcx, %rax
/* %rax now contains our starting position after relocation. */
/* One more page to copy: ourselves. */
add $0x403, %rcx
shr $2, %rcx
/* Forward copy. */
cld
rep
movsl
mov %rax, %rsi
#ifdef APPLE_CC
add $(cont0-base), %eax
#else
add $(cont0-base), %rax
#endif
jmp *%rax
cont0:
#ifdef APPLE_CC
lea (cont1 - base) (%esi, 1), %eax
mov %eax, (jump_vector - base) (%esi, 1)
lea (gdt - base) (%esi, 1), %eax
mov %eax, (gdt_addr - base) (%esi, 1)
/* Switch to compatibility mode. */
lgdt (gdtdesc - base) (%esi, 1)
/* Update %cs. Thanks to David Miller for pointing this mistake out. */
ljmp *(jump_vector - base) (%esi,1)
#else
lea (cont1 - base) (%rsi, 1), %rax
mov %eax, (jump_vector - base) (%rsi, 1)
lea (gdt - base) (%rsi, 1), %rax
mov %rax, (gdt_addr - base) (%rsi, 1)
/* Switch to compatibility mode. */
lgdt (gdtdesc - base) (%rsi, 1)
/* Update %cs. Thanks to David Miller for pointing this mistake out. */
ljmp *(jump_vector - base) (%rsi, 1)
#endif
cont1:
.code32
/* Update other registers. */
mov $0x18, %eax
mov %eax, %ds
mov %eax, %es
mov %eax, %fs
mov %eax, %gs
mov %eax, %ss
/* Disable paging. */
mov %cr0, %eax
and $0x7fffffff, %eax
mov %eax, %cr0
/* Disable amd64. */
mov $0xc0000080, %ecx
rdmsr
and $0xfffffeff, %eax
wrmsr
/* Turn off PAE. */
movl %cr4, %eax
and $0xffffffcf, %eax
mov %eax, %cr4
jmp cont2
cont2:
#endif
.code32
/* Registers on XNU boot: eip, esp and eax. */
/* mov imm32, %ecx */
.byte 0xb9
VARIABLE (grub_xnu_entry_point)
.long 0
/* mov imm32, %eax */
.byte 0xb8
VARIABLE (grub_xnu_arg1)
.long 0
/* mov imm32, %ebx */
.byte 0xbb
VARIABLE (grub_xnu_stack)
.long 0
movl %ebx, %esp
jmp *%ecx
#ifdef __x86_64__
/* GDT. Copied from loader/i386/linux.c. */
.p2align 4
gdt:
/* NULL. */
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
/* Reserved. */
.byte 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
/* Code segment. */
.byte 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x9A, 0xCF, 0x00
/* Data segment. */
.byte 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x92, 0xCF, 0x00
gdtdesc:
.word 31
gdt_addr:
/* Filled by the code. */
.quad 0
.p2align 4
jump_vector:
/* Jump location. Is filled by the code */
.long 0
.long 0x10
#endif
VARIABLE(grub_xnu_launcher_end)

39
loader/xnu.c
View file

@ -36,6 +36,9 @@ struct grub_xnu_devtree_key *grub_xnu_devtree_root = 0;
static int driverspackagenum = 0;
static int driversnum = 0;
void *grub_xnu_heap_start = 0;
grub_size_t grub_xnu_heap_size = 0;
/* Allocate heap by 32MB-blocks. */
#define GRUB_XNU_HEAP_ALLOC_BLOCK 0x2000000
@ -46,12 +49,6 @@ void *
grub_xnu_heap_malloc (int size)
{
void *val;
#if 0
/* This way booting is faster but less reliable.
Once we have advanced mm second way will be as fast as this one. */
val = grub_xnu_heap_start = (char *) 0x100000;
#else
int oldblknum, newblknum;
/* The page after the heap is used for stack. Ensure it's usable. */
@ -63,25 +60,21 @@ grub_xnu_heap_malloc (int size)
newblknum = (grub_xnu_heap_size + size + GRUB_XNU_PAGESIZE
+ GRUB_XNU_HEAP_ALLOC_BLOCK - 1) / GRUB_XNU_HEAP_ALLOC_BLOCK;
if (oldblknum != newblknum)
{
/* FIXME: instruct realloc to allocate at 1MB if possible once
advanced mm is ready. */
val = grub_realloc (grub_xnu_heap_start,
newblknum * GRUB_XNU_HEAP_ALLOC_BLOCK);
else
val = grub_xnu_heap_start;
if (! val)
{
grub_error (GRUB_ERR_OUT_OF_MEMORY,
"not enough space on xnu memory heap");
return 0;
grub_xnu_heap_start
= XNU_RELOCATOR (realloc) (grub_xnu_heap_start,
newblknum
* GRUB_XNU_HEAP_ALLOC_BLOCK);
if (!grub_xnu_heap_start)
return NULL;
}
grub_xnu_heap_start = val;
#endif
val = (char *) grub_xnu_heap_start + grub_xnu_heap_size;
val = (grub_uint8_t *) grub_xnu_heap_start + grub_xnu_heap_size;
grub_xnu_heap_size += size;
grub_dprintf ("xnu", "val=%p\n", val);
return (char *) val;
return val;
}
/* Make sure next block of the heap will be aligned.
@ -251,7 +244,7 @@ grub_xnu_writetree_toheap (void **start, grub_size_t *size)
- *size % GRUB_XNU_PAGESIZE);
/* Put real data in the dummy. */
extdesc->addr = (char *) *start - grub_xnu_heap_start
extdesc->addr = (grub_uint8_t *) *start - (grub_uint8_t *) grub_xnu_heap_start
+ grub_xnu_heap_will_be_at;
extdesc->size = (grub_uint32_t) *size;
@ -503,7 +496,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
grub_file_t infoplist;
struct grub_xnu_extheader *exthead;
int neededspace = sizeof (*exthead);
char *buf;
grub_uint8_t *buf;
grub_size_t infoplistsize = 0, machosize = 0;
if (! grub_xnu_heap_size)
@ -552,7 +545,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
/* Load the binary. */
if (macho)
{
exthead->binaryaddr = (buf - grub_xnu_heap_start)
exthead->binaryaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
+ grub_xnu_heap_will_be_at;
exthead->binarysize = machosize;
if ((err = grub_macho32_readfile (macho, buf)))
@ -568,7 +561,7 @@ grub_xnu_load_driver (char *infoplistname, grub_file_t binaryfile)
/* Load the plist. */
if (infoplist)
{
exthead->infoplistaddr = (buf - grub_xnu_heap_start)
exthead->infoplistaddr = (buf - (grub_uint8_t *) grub_xnu_heap_start)
+ grub_xnu_heap_will_be_at;
exthead->infoplistsize = infoplistsize + 1;
if (grub_file_read (infoplist, buf, infoplistsize)

17
loader/xnu_resume.c
View file

@ -45,7 +45,7 @@ grub_xnu_resume (char *imagename)
grub_file_t file;
grub_size_t total_header_size;
struct grub_xnu_hibernate_header hibhead;
char *buf, *codetmp;
grub_uint8_t *buf;
grub_uint32_t codedest;
grub_uint32_t codesize;
@ -94,12 +94,11 @@ grub_xnu_resume (char *imagename)
/* Try to allocate necessary space.
FIXME: mm isn't good enough yet to handle huge allocations.
*/
grub_xnu_hibernate_image = buf = grub_malloc (hibhead.image_size);
grub_xnu_hibernate_image = buf = XNU_RELOCATOR (alloc) (hibhead.image_size);
if (! buf)
{
grub_file_close (file);
return grub_error (GRUB_ERR_OUT_OF_MEMORY,
"not enough memory to load image");
return grub_errno;
}
/* Read image. */
@ -112,22 +111,16 @@ grub_xnu_resume (char *imagename)
}
grub_file_close (file);
codetmp = grub_memalign (GRUB_XNU_PAGESIZE, codesize + GRUB_XNU_PAGESIZE);
/* Setup variables needed by asm helper. */
grub_xnu_heap_will_be_at = codedest;
grub_xnu_heap_start = codetmp;
grub_xnu_heap_start = buf;
grub_xnu_heap_size = codesize;
grub_xnu_stack = (codedest + hibhead.stack);
grub_xnu_entry_point = (codedest + hibhead.entry_point);
grub_xnu_arg1 = (long) buf;
/* Prepare asm helper. */
grub_memcpy (codetmp, ((grub_uint8_t *) buf) + total_header_size, codesize);
grub_memcpy (codetmp + codesize, grub_xnu_launcher_start,
grub_xnu_launcher_end - grub_xnu_launcher_start);
/* We're ready now. */
grub_loader_set ((grub_err_t (*) (void)) (codetmp + codesize),
grub_loader_set (grub_xnu_boot_resume,
grub_xnu_resume_unload, 0);
/* Prevent module from unloading. */