grub/loader/macho.c
carles 7fd0baee0f 2009-12-24 Carles Pina i Estany <carles@pina.cat>
* bus/usb/usbhub.c: Fix capitalization, fullstop and newlines in
	grub_errno calls.
	* commands/acpi.c: Likewise.
	* commands/blocklist.c: Likewise.
	* commands/efi/loadbios.c: Likewise.
	* commands/i386/pc/drivemap.c: Likewise.
	* commands/loadenv.c: Likewise.
	* commands/memrw.c: Likewise.
	* commands/password.c: Likewise.
	* commands/videotest.c: Likewise.
	* disk/ata.c: Likewise.
	* disk/ata_pthru.c: Likewise.
	* disk/dmraid_nvidia.c: Likewise.
	* disk/ieee1275/nand.c: Likewise.
	* disk/ieee1275/ofdisk.c: Likewise.
	* disk/loopback.c: Likewise.
	* disk/lvm.c: Likewise.
	* disk/mdraid_linux.c: Likewise.
	* disk/raid.c: Likewise.
	* disk/raid6_recover.c: Likewise.
	* disk/scsi.c: Likewise.
	* efiemu/main.c: Likewise.
	* efiemu/mm.c: Likewise.
	* efiemu/pnvram.c: Likewise.
	* efiemu/symbols.c: Likewise.
	* font/font.c: Likewise.
	* fs/cpio.c: Likewise.
	* fs/hfsplus.c: Likewise.
	* fs/iso9660.c: Likewise.
	* fs/jfs.c: Likewise.
	* fs/minix.c: Likewise.
	* fs/ntfs.c: Likewise.
	* fs/ntfscomp.c: Likewise.
	* fs/reiserfs.c: Likewise.
	* fs/ufs.c: Likewise.
	* fs/xfs.c: Likewise.
	* gettext/gettext.c: Likewise.
	* include/grub/auth.h: Likewise.
	* kern/elf.c: Likewise.
	* kern/file.c: Likewise.
	* kern/ieee1275/init.c: Likewise.
	* kern/ieee1275/mmap.c: Likewise.
	* kern/ieee1275/openfw.c: Likewise.
	* kern/powerpc/dl.c: Likewise.
	* kern/sparc64/dl.c: Likewise.
	* lib/arg.c: Likewise.
	* loader/i386/bsd.c: Likewise.
	* loader/i386/bsdXX.c: Likewise.
	* loader/i386/efi/linux.c: Likewise.
	* loader/i386/efi/xnu.c: Likewise.
	* loader/i386/ieee1275/linux.c: Likewise.
	* loader/i386/linux.c: Likewise.
	* loader/i386/multiboot.c: Likewise.
	* loader/i386/pc/linux.c: Likewise.
	* loader/i386/pc/multiboot2.c: Likewise.
	* loader/i386/xnu.c: Likewise.
	* loader/ieee1275/multiboot2.c: Likewise.
	* loader/macho.c: Likewise.
	* loader/machoXX.c: Likewise.
	* loader/multiboot2.c: Likewise.
	* loader/multiboot_loader.c: Likewise.
	* loader/powerpc/ieee1275/linux.c: Likewise.
	* loader/sparc64/ieee1275/linux.c: Likewise.
	* loader/xnu.c: Likewise.
	* loader/xnu_resume.c: Likewise.
	* mmap/i386/pc/mmap.c: Likewise.
	* normal/menu_viewer.c: Likewise.
	* partmap/acorn.c: Likewise.
	* partmap/amiga.c: Likewise.
	* partmap/apple.c: Likewise.
	* script/lexer.c: Likewise.
	* term/gfxterm.c: Likewise.
	* term/i386/pc/serial.c: Likewise.
	* term/i386/pc/vga.c: Likewise.
	* term/ieee1275/ofconsole.c: Likewise.
	* term/terminfo.c: Likewise.
	* video/bitmap.c: Likewise.
	* video/efi_gop.c: Likewise.
	* video/efi_uga.c: Likewise.
	* video/fb/video_fb.c: Likewise.
	* video/i386/pc/vbe.c: Likewise.
	* video/readers/tga.c: Likewise.
	* video/video.c: Likewise.
2009-12-24 23:53:05 +01:00

161 lines
4 KiB
C

/* macho.c - load Mach-O files. */
/*
* 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/>.
*/
/* This Mach-O loader is incomplete and can load only non-relocatable segments.
This is however enough to boot xnu (otool -l and Mach-O specs for more info).
*/
#include <grub/err.h>
#include <grub/macho.h>
#include <grub/cpu/macho.h>
#include <grub/machoload.h>
#include <grub/file.h>
#include <grub/gzio.h>
#include <grub/misc.h>
#include <grub/mm.h>
grub_err_t
grub_macho_close (grub_macho_t macho)
{
grub_file_t file = macho->file;
grub_free (macho->cmds32);
grub_free (macho->cmds64);
grub_free (macho);
if (file)
grub_file_close (file);
return grub_errno;
}
grub_macho_t
grub_macho_file (grub_file_t file)
{
grub_macho_t macho;
union grub_macho_filestart filestart;
macho = grub_malloc (sizeof (*macho));
if (! macho)
return 0;
macho->file = file;
macho->offset32 = -1;
macho->offset64 = -1;
macho->end32 = -1;
macho->end64 = -1;
macho->cmds32 = 0;
macho->cmds64 = 0;
if (grub_file_seek (macho->file, 0) == (grub_off_t) -1)
goto fail;
if (grub_file_read (macho->file, &filestart, sizeof (filestart))
!= sizeof (filestart))
{
grub_error_push ();
grub_error (GRUB_ERR_READ_ERROR, "cannot read Mach-O header");
goto fail;
}
/* Is it a fat file? */
if (filestart.fat.magic == grub_be_to_cpu32 (GRUB_MACHO_FAT_MAGIC))
{
struct grub_macho_fat_arch *archs;
int i, narchs;
/* Load architecture description. */
narchs = grub_be_to_cpu32 (filestart.fat.nfat_arch);
if (grub_file_seek (macho->file, sizeof (struct grub_macho_fat_header))
== (grub_off_t) -1)
goto fail;
archs = grub_malloc (sizeof (struct grub_macho_fat_arch) * narchs);
if (!archs)
goto fail;
if (grub_file_read (macho->file, archs,
sizeof (struct grub_macho_fat_arch) * narchs)
!= (grub_ssize_t)sizeof(struct grub_macho_fat_arch) * narchs)
{
grub_free (archs);
grub_error_push ();
grub_error (GRUB_ERR_READ_ERROR, "cannot read Mach-O header");
goto fail;
}
for (i = 0; i < narchs; i++)
{
if (GRUB_MACHO_CPUTYPE_IS_HOST32
(grub_be_to_cpu32 (archs[i].cputype)))
{
macho->offset32 = grub_be_to_cpu32 (archs[i].offset);
macho->end32 = grub_be_to_cpu32 (archs[i].offset)
+ grub_be_to_cpu32 (archs[i].size);
}
if (GRUB_MACHO_CPUTYPE_IS_HOST64
(grub_be_to_cpu32 (archs[i].cputype)))
{
macho->offset64 = grub_be_to_cpu32 (archs[i].offset);
macho->end64 = grub_be_to_cpu32 (archs[i].offset)
+ grub_be_to_cpu32 (archs[i].size);
}
}
grub_free (archs);
}
/* Is it a thin 32-bit file? */
if (filestart.thin32.magic == GRUB_MACHO_MAGIC32)
{
macho->offset32 = 0;
macho->end32 = grub_file_size (file);
}
/* Is it a thin 64-bit file? */
if (filestart.thin64.magic == GRUB_MACHO_MAGIC64)
{
macho->offset64 = 0;
macho->end64 = grub_file_size (file);
}
grub_macho_parse32 (macho);
grub_macho_parse64 (macho);
return macho;
fail:
grub_macho_close (macho);
return 0;
}
grub_macho_t
grub_macho_open (const char *name)
{
grub_file_t file;
grub_macho_t macho;
file = grub_gzfile_open (name, 1);
if (! file)
return 0;
macho = grub_macho_file (file);
if (! macho)
grub_file_close (file);
return macho;
}