bootlacestart.s

grub4dos-0.4.4-2008- 08-src.zip

msg_sectors_per_track:
	.ascii	"\r\nError: Too few sectors(per track) to hold GRLDR.MBR.\r\n\r\n\0"

msg_geometry_S:
	.ascii	"\r\nDisk geometry calculated according to the partition table:\r\n\r\n"
	.ascii	"        Sectors per track = \0"
msg_geometry_H:
	.ascii	", Number of heads = \0"
msg_success:
	.ascii	"\r\n\r\nSuccess.\r\n\r\n\0"

msg_fstype_fat32_deny:
	.ascii	"\r\n\r\nError: Filesystem type is FAT32 but --fat32 was not specified.\r\n\r\n\0"

msg_fstype_fat32_allow:
	.ascii	"\r\n\r\nFilesystem type is FAT32.\r\n\r\n\0"

msg_fstype_ntfs_deny:
	.ascii	"\r\n\r\nError: Filesystem type is NTFS but --ntfs was not specified.\r\n\r\n\0"

msg_fstype_ntfs_allow:
	.ascii	"\r\n\r\nFilesystem type is NTFS.\r\n\r\n\0"

msg_fstype_fat12_deny:
	.ascii	"\r\n\r\nError: Filesystem type is FAT12 but --fat12 was not specified.\r\n\r\n\0"

msg_fstype_fat12_allow:
	.ascii	"\r\n\r\nFilesystem type is FAT12.\r\n\r\n\0"

msg_fstype_fat16_deny:
	.ascii	"\r\n\r\nError: Filesystem type is FAT16 but --fat16 was not specified.\r\n\r\n\0"

msg_fstype_fat16_allow:
	.ascii	"\r\n\r\nFilesystem type is FAT16.\r\n\r\n\0"

msg_fstype_ext2_deny:
	.ascii	"\r\n\r\nError: Filesystem type is EXT2 but --ext2 was not specified.\r\n\r\n\0"

msg_fstype_ext2_allow:
	.ascii	"\r\n\r\nFilesystem type is EXT2.\r\n\r\n\0"

msg_unsupported_fstype:
	.ascii	"\r\n\r\nError: Unsupported filesystem type.\r\n\r\n\0"

msg_fstype_mbr_deny:
	.ascii	"\r\n\r\nError: Cannot overwrite the MBR of a harddrive(or HD image) with --floppy.\r\n\r\n\0"

//msg_no_ntfs_boot_record:
//	.ascii	"\r\n\r\nError: Filesystem type is NTFS, but no ntfs boot record was found.\r\n\r\n\0"

msg_usage:

	.ascii	"BOOTLACE writes GRLDR BOOT RECORD to MBR or to the boot area of a file system.\r\n"
	.ascii	"Usage:  bootlace.com  [OPTIONS]  DEVICE_OR_FILE\r\n"
	.ascii	"Options: --read-only, --floppy[=N], --boot-prevmbr-first, --boot-prevmbr-last,\r\n"
	.ascii	"--no-backup-mbr, --force-backup-mbr, --mbr-enable-floppy, --mbr-disable-floppy,\r\n"
	.ascii	"--mbr-enable-osbr, --mbr-disable-osbr, --duce, --time-out=T, --hot-key=K, \r\n"
	.ascii	"--preferred-drive=D, --preferred-partition=P, --sectors-per-track=S, --heads=H,\r\n"
	.ascii	"--start-sector=B, --total-sectors=C, --install-partition=I, --lba, --chs,\r\n"
	.ascii	"--fat12, --fat16, --fat32, --vfat, --ntfs, --ext2\r\n"
	.ascii	"DEVICE_OR_FILE: Filename of the device or image. For DOS, a BIOS drive number\r\n"
	.ascii	"(in hex 0xHH or decimal DDD format)can be used to access the drive.\r\n\0"

msg_end:

	.align	4

Cmax:	.long	0
Hmax:	.long	0
Smax:	.long	0
i:	.long	0
j:	.long	0
X:	.long	0
Y:	.long	0
C:			# long, but high word is always 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
	.word	0, 0
H:
	.long	0
	.long	0
	.long	0
	.long	0
	.long	0
	.long	0
	.long	0
	.long	0
H8:	.long	0
L:
	.long	0, 0
	.long	0, 0
	.long	0, 0
	.long	0, 0
	.long	0, 0
	.long	0, 0
	.long	0, 0
	.long	0, 0
L8:	.long	0, 0
probed_sectors_per_track:
	.long	0
probed_heads:
	.long	0
number_digits:
	.ascii	"          \0"	/* 10 spaces */
delimit_space:
	.ascii	"    \0"	/* 4 spaces */
delimit_newline:
	.ascii	"\n\0"
backup_mbr:

	/*	0	no backup, Will not touch PREV_MBR
	 *	1	autobackup
	 *	2	forcebackup. Will overwrite the old PREV_MBR
	 */

	.long	1	/* default is autobackup */

mbr_floppy:

	/*	0	enable floppy
	 *	1	disable floppy
	 *	2	enable floppy
	 */

	.long	0	/* default is enable floppy */

mbr_osbr:

	/*	0	enable osbr
	 *	1	disable osbr
	 *	2	enable osbr
	 */

	.long	0	/* default is enable osbr */

duce:
	/*	0	enable unconditional command-line entrance
	 *	1	disable unconditional command-line entrance
	 *	2	enable unconditional command-line entrance
	 */

	.long	0	/* default is enable unconditional command-line entrance */

boot_prevmbr:

	/*	0	boot prevmbr last
	 *	1	boot prevmbr first
	 *	2	boot prevmbr last
	 */

	.long	0	/* default is boot prevmbr last */

preferred_drive:

	.long	0xff	/* default is No Drive */

preferred_partition:

	.long	0xff	/* default is Whole drive */

install_partition:

	.long	0xffffffff	/* default is partition 0xff */

sectors_per_track:

	.long	0xffffff3f	/* default is 63 */

heads:

	.long	0xffff00ff	/* default is 255 */

start_sector:

	.long	0xffffffff	/* default is invalid */

total_sectors:

	.long	0	/* default is invalid */

time_out:

	.long	0xffffff05	/* low byte default is 5 seconds */

hot_key:

	.long	0xffff3920	/* low word default is space bar */

read_only:

	/*	0	read only
	 *	2	read/write
	 */

	.long	2	/* default is read/write */

floppy:

	/* 0xffffffff for hard drive image(with leading MBR)
	 * 0x000000ff for floppy image
	 * value < 0xff for partition image
	 */

	.long	0xffffffff	/* default is for hard drive MBR */

lba:

	/* 1 for lba, 0 for chs, -1 for `not specified'. */

	.long	0xffffffff	/* default is `not specified' */

fstypes:

	/* bit 0: fat12 */
	/* bit 1: fat16 */
	/* bit 2: fat32 */
	/* bit 3: ntfs */
	/* bit 4: ext2 */

	.long	0xfffffff7	/* default is all types except ntfs */

sectors_to_write:

	/* default is number of sectors in GRLDR.MBR */

	.long	((pre_stage2_start - _start1) / 512)

current_partition:
	.long	0

	.align	0x200

#define GRLDR_INSTALL
#include "grldrstart.S"

	.code32

	//.bss

	.align	0x200

mbr_63_sectors:

	//. = . + ((63+1)*512)

	.align	0x200

_string_table:

	.ascii	"\0"

	.ascii	".shstrtab\0"

	.ascii	".text\0"

	.ascii	".data\0"

	.ascii	".bss\0"

	.align	4

_sh_offset:

	# SHT_UNDEF section

	.long	0			# sh_name = No name
	.long	0			# sh_type = Inactive
	.long	0			# sh_flags = No flags
	.long	0			# sh_addr = No address
	.long	0			# sh_offset = No file offset
	.long	0			# sh_size = No size
	.long	0			# sh_link = No link information
	.long	0			# sh_info = No auxiliary information
	.long	0			# sh_addralign = No alignment
	.long	0			# sh_entsize = No entries

	# .text

	.long	0x0b			# sh_name
	.long	1			# sh_type = SHT_PROGBITS
	.long	7			# sh_flags = WRITE,ALLOC, EXEC

	.long	(_start_linux - _start + 0x08048000)
					# sh_addr(in process space)

	.long	(_start_linux - _start)
					# sh_offset(from beginning of file)

	.long	(pre_stage2_start - _start_linux)
					# sh_size

	.long	0			# sh_link
	.long	0			# sh_info
	.long	0x200			# sh_addralign
	.long	0			# sh_entsize

	# .data

	.long	0x11			# sh_name
	.long	1			# sh_type = SHT_PROGBITS
	.long	3			# sh_flags = WRITE, ALLOC

	.long	(pre_stage2_start - _start + 0x08048000)
					# sh_addr(in process space)

	.long	(pre_stage2_start - _start)
					# sh_offset(from beginning of file)

	.long	0			# sh_size (no data present)
	.long	0			# sh_link
	.long	0			# sh_info
	.long	4			# sh_addralign
	.long	0			# sh_entsize

	# .bss

	.long	0x17			# sh_name
	.long	8			# sh_type = SHT_NOBITS
	.long	3			# sh_flags = WRITE, ALLOC

	.long	(pre_stage2_start - _start + 0x08048000)
					# sh_addr(in process space)

	.long	(pre_stage2_start - _start)
					# sh_offset(from beginning of file)

	.long	(0x7e00 + 0x200)	# sh_size
	.long	0			# sh_link
	.long	0			# sh_info
	.long	0x200			# sh_addralign
	.long	0			# sh_entsize

	# .shstrtab

	.long	1			# sh_name
	.long	3			# sh_type = SHT_STRTAB
	.long	0			# sh_flags = no write,no alloc,no exec
	.long	0			# sh_addr = not present in memory

	.long	(_string_table - _start)
					# sh_offset (where strtab begins at)

	.long	(_sh_offset - _string_table)
					# sh_size (size of the string table)

	.long	0			# sh_link
	.long	0			# sh_info
	.long	1			# sh_addralign
	.long	0			# sh_entsize












//-------------------------------------------------------------------

#if 0	/* begin backup sh.S for MandrakeISOinstall-10.0 */

/* Use the following command to compile and build:
 *
 *	gcc -s -nostdlib -o sh sh.S
 *
 */

	.globl _start
	.text

_start:

	/* fork() */
	xorl    %eax, %eax
	incl	%eax
	incl	%eax
	int     $0x80
	testl	%eax, %eax
	jz	1f
	/* exit(0) */
	xorl    %ebx, %ebx
	xorl    %eax, %eax
	incl    %eax
	int     $0x80

1:
#if 0
	/* setpgid(0,0) */
	xorl    %ebx, %ebx
	xorl    %ecx, %ecx
	xorl    %eax, %eax
	movb	$57, %al
	int     $0x80
#else
	/* setsid() */
	xorl    %eax, %eax
	movb	$66, %al
	int     $0x80
#endif
1:
	/* sleep(1) */
	xorl    %eax, %eax
	movb	$162, %al
	movl	$(time_sleep), %ebx
	xorl    %ecx, %ecx
	int     $0x80
	
	/* access("/bin/sh", F_OK) */
	xorl    %eax, %eax
	movb	$33, %al
	movl	$(shell_path), %ebx
	xorl    %ecx, %ecx
	int     $0x80
	orl	%eax, %eax
	jnz	1b	/* loop when not exist */

	/* execve("/bin/sh", argv, NULL) */
	xorl    %eax, %eax
	movb	$11, %al
	movl	$(shell_path), %ebx
	movl	$(argv), %ecx
	movl	$(envp), %edx
	int     $0x80
	
	/* exit(1) */
	xorl    %ebx, %ebx
	incl	%ebx
	xorl    %eax, %eax
	incl    %eax
	int     $0x80

time_sleep:
	.long	1
	.long	0

shell_path:
	.string	"/bin/sh"
arg0:
	.string	"mix_ISOs"
arg1:
	.string	"/tmp/mix_ISOs"
argv:
	.long	arg0
	.long	arg1
envp:
	.long	0

#endif	/* end backup sh.S for MandrakeISOinstall-10.0 */