vbatts
/
grub
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Compress grub_prefix. 

* grub-core/boot/i386/pc/lnxboot.S: Use
	GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE.
	* grub-core/kern/i386/pc/startup.S: Move grub_prefix to compressed part.
	* include/grub/offsets.h: Rename GRUB_MACHINE_DATA_END to
	GRUB_MACHINE_PREFIX_END. All users updated.
	(GRUB_KERNEL_I386_PC_PREFIX): Set to GRUB_KERNEL_I386_PC_RAW_SIZE.
	(GRUB_KERNEL_I386_PC_PREFIX_END): Set to GRUB_KERNEL_I386_PC_PREFIX
	+ 0x40.
	(GRUB_KERNEL_I386_PC_RAW_SIZE): Decrease.
	* util/grub-mkimage.c (image_target_desc): Change data_end to
	prefix_end. All users updated.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-09-03 14:54:04 +02:00
parent a7c00cdb94
commit c8e7bf5ff7
11 changed files with 67 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
ChangeLog
View File

@ -1,3 +1,19 @@
2010-09-03 Vladimir Serbinenko <phcoder@gmail.com>
Compress grub_prefix.
* grub-core/boot/i386/pc/lnxboot.S: Use
GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE.
* grub-core/kern/i386/pc/startup.S: Move grub_prefix to compressed part.
* include/grub/offsets.h: Rename GRUB_MACHINE_DATA_END to
GRUB_MACHINE_PREFIX_END. All users updated.
(GRUB_KERNEL_I386_PC_PREFIX): Set to GRUB_KERNEL_I386_PC_RAW_SIZE.
(GRUB_KERNEL_I386_PC_PREFIX_END): Set to GRUB_KERNEL_I386_PC_PREFIX
+ 0x40.
(GRUB_KERNEL_I386_PC_RAW_SIZE): Decrease.
* util/grub-mkimage.c (image_target_desc): Change data_end to
prefix_end. All users updated.
2010-09-03 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/loader/i386/bsd.c (grub_freebsd_boot): Set %ebp to sane

2
grub-core/boot/i386/pc/lnxboot.S
View File

@ -185,7 +185,7 @@ real_code_2:
call LOCAL(move_memory)
/* Check for multiboot signature. */
cmpl $MULTIBOOT_HEADER_MAGIC, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_DATA_END)
cmpl $MULTIBOOT_HEADER_MAGIC, %ss:(DATA_ADDR + GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE)
jz 1f
movl (ramdisk_image - start), %esi

2
grub-core/kern/i386/coreboot/startup.S
View File

@ -51,7 +51,7 @@ VARIABLE(grub_prefix)
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
. = _start + GRUB_KERNEL_MACHINE_PREFIX_END
/*
* Support for booting GRUB from a Multiboot boot loader (e.g. GRUB itself).

2
grub-core/kern/i386/ieee1275/startup.S
View File

@ -51,7 +51,7 @@ VARIABLE(grub_prefix)
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
. = _start + GRUB_KERNEL_MACHINE_PREFIX_END
codestart:
movl %eax, EXT_C(grub_ieee1275_entry_fn)

18
grub-core/kern/i386/pc/startup.S
View File

@ -100,14 +100,6 @@ VARIABLE(grub_install_dos_part)
.long 0xFFFFFFFF
VARIABLE(grub_install_bsd_part)
.long 0xFFFFFFFF
VARIABLE(grub_prefix)
/* to be filled by grub-mkimage */
/*
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
#ifdef APPLE_CC
bss_start:
@ -450,6 +442,16 @@ gate_a20_check_state:
*/
. = _start + GRUB_KERNEL_MACHINE_RAW_SIZE
. = _start + GRUB_KERNEL_MACHINE_PREFIX
VARIABLE(grub_prefix)
/* to be filled by grub-mkimage */
/*
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_PREFIX_END
/*
* grub_exit()

2
grub-core/kern/i386/qemu/startup.S
View File

@ -39,7 +39,7 @@ VARIABLE(grub_prefix)
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
. = _start + GRUB_KERNEL_MACHINE_PREFIX_END
codestart:
/* Relocate to low memory. First we figure out our location.

2
grub-core/kern/mips/startup.S
View File

@ -154,7 +154,7 @@ VARIABLE(grub_prefix)
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
. = _start + GRUB_KERNEL_MACHINE_PREFIX_END
#ifdef GRUB_MACHINE_MIPS_YEELOONG
VARIABLE (grub_arch_busclock)
.long 0

2
grub-core/kern/powerpc/ieee1275/startup.S
View File

@ -39,7 +39,7 @@ VARIABLE(grub_prefix)
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
. = _start + GRUB_KERNEL_MACHINE_PREFIX_END
codestart:
li 2, 0

2
grub-core/kern/sparc64/ieee1275/crt0.S
View File

@ -42,7 +42,7 @@ VARIABLE(grub_prefix)
* Leave some breathing room for the prefix.
*/
. = EXT_C(_start) + GRUB_KERNEL_MACHINE_DATA_END
. = EXT_C(_start) + GRUB_KERNEL_MACHINE_PREFIX_END
codestart:
/* Copy the modules past the end of the kernel image.

35
include/grub/offsets.h
View File

@ -34,14 +34,17 @@
/* The offset of GRUB_INSTALL_BSD_PART. */
#define GRUB_KERNEL_I386_PC_INSTALL_BSD_PART 0x18
/* The offset of GRUB_PREFIX. */
#define GRUB_KERNEL_I386_PC_PREFIX 0x1c
/* End of the data section. */
#define GRUB_KERNEL_I386_PC_DATA_END 0x5c
/* The offset of multiboot signature. */
#define GRUB_KERNEL_I386_PC_MULTIBOOT_SIGNATURE 0x1c
/* The size of the first region which won't be compressed. */
#define GRUB_KERNEL_I386_PC_RAW_SIZE (GRUB_KERNEL_I386_PC_DATA_END + 0x5F0)
#define GRUB_KERNEL_I386_PC_RAW_SIZE 0x5D8
/* The offset of GRUB_PREFIX. */
#define GRUB_KERNEL_I386_PC_PREFIX GRUB_KERNEL_I386_PC_RAW_SIZE
/* End of the data section. */
#define GRUB_KERNEL_I386_PC_PREFIX_END (GRUB_KERNEL_I386_PC_PREFIX + 0x40)
/* The segment where the kernel is loaded. */
#define GRUB_BOOT_I386_PC_KERNEL_SEG 0x800
@ -65,7 +68,7 @@
#define GRUB_KERNEL_I386_QEMU_PREFIX 0x10
/* End of the data section. */
#define GRUB_KERNEL_I386_QEMU_DATA_END 0x50
#define GRUB_KERNEL_I386_QEMU_PREFIX_END 0x50
#define GRUB_KERNEL_I386_QEMU_LINK_ADDR 0x8200
@ -82,7 +85,7 @@
#define GRUB_KERNEL_SPARC64_IEEE1275_PREFIX 0x14
/* End of the data section. */
#define GRUB_KERNEL_SPARC64_IEEE1275_DATA_END 0x114
#define GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END 0x114
#define GRUB_BOOT_SPARC64_IEEE1275_LIST_SIZE 12
@ -91,7 +94,7 @@
#define GRUB_KERNEL_SPARC64_IEEE1275_LINK_ADDR 0x4400
#define GRUB_KERNEL_POWERPC_IEEE1275_PREFIX 0x4
#define GRUB_KERNEL_POWERPC_IEEE1275_DATA_END 0x44
#define GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END 0x44
#define GRUB_KERNEL_POWERPC_IEEE1275_LINK_ALIGN 4
#define GRUB_KERNEL_POWERPC_IEEE1275_LINK_ADDR 0x200000
@ -105,29 +108,29 @@
#define GRUB_KERNEL_MIPS_YEELOONG_KERNEL_IMAGE_SIZE 0x10
#define GRUB_KERNEL_MIPS_YEELOONG_PREFIX GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE
#define GRUB_KERNEL_MIPS_YEELOONG_DATA_END GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE + 0x48
#define GRUB_KERNEL_MIPS_YEELOONG_PREFIX_END GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE + 0x48
/* The offset of GRUB_PREFIX. */
#define GRUB_KERNEL_I386_EFI_PREFIX 0x8
/* End of the data section. */
#define GRUB_KERNEL_I386_EFI_DATA_END 0x50
#define GRUB_KERNEL_I386_EFI_PREFIX_END 0x50
/* The offset of GRUB_PREFIX. */
#define GRUB_KERNEL_X86_64_EFI_PREFIX 0x8
/* End of the data section. */
#define GRUB_KERNEL_X86_64_EFI_DATA_END 0x50
#define GRUB_KERNEL_X86_64_EFI_PREFIX_END 0x50
#define GRUB_KERNEL_I386_COREBOOT_PREFIX 0x2
#define GRUB_KERNEL_I386_COREBOOT_DATA_END 0x42
#define GRUB_KERNEL_I386_COREBOOT_PREFIX_END 0x42
#define GRUB_KERNEL_I386_COREBOOT_LINK_ADDR 0x8200
#define GRUB_KERNEL_I386_MULTIBOOT_PREFIX GRUB_KERNEL_I386_COREBOOT_PREFIX
#define GRUB_KERNEL_I386_MULTIBOOT_DATA_END GRUB_KERNEL_I386_COREBOOT_DATA_END
#define GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END GRUB_KERNEL_I386_COREBOOT_PREFIX_END
#define GRUB_KERNEL_I386_IEEE1275_PREFIX 0x2
#define GRUB_KERNEL_I386_IEEE1275_DATA_END 0x42
#define GRUB_KERNEL_I386_IEEE1275_PREFIX_END 0x42
#define GRUB_KERNEL_I386_IEEE1275_LINK_ADDR 0x10000
#define GRUB_KERNEL_I386_IEEE1275_MOD_ALIGN 0x1000
@ -157,7 +160,7 @@
#define GRUB_KERNEL_MACHINE_COMPRESSED_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _COMPRESSED_SIZE)
#define GRUB_KERNEL_MACHINE_PREFIX GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _PREFIX)
#define GRUB_KERNEL_MACHINE_DATA_END GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _DATA_END)
#define GRUB_KERNEL_MACHINE_PREFIX_END GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _PREFIX_END)
#define GRUB_BOOT_MACHINE_KERNEL_SEG GRUB_OFFSETS_CONCAT (GRUB_BOOT_, MACHINE, _KERNEL_SEG)
#define GRUB_MEMORY_MACHINE_UPPER GRUB_OFFSETS_CONCAT (GRUB_MEMORY_, MACHINE, _UPPER)
#define GRUB_KERNEL_MACHINE_RAW_SIZE GRUB_OFFSETS_CONCAT (GRUB_KERNEL_, MACHINE, _RAW_SIZE)

30
util/grub-mkimage.c
View File

@ -63,7 +63,7 @@ struct image_target_desc
PLATFORM_FLAGS_LZMA = 1
} flags;
unsigned prefix;
unsigned data_end;
unsigned prefix_end;
unsigned raw_size;
unsigned total_module_size;
unsigned kernel_image_size;
@ -86,7 +86,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_COREBOOT,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_I386_COREBOOT_PREFIX,
.data_end = GRUB_KERNEL_I386_COREBOOT_DATA_END,
.prefix_end = GRUB_KERNEL_I386_COREBOOT_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.kernel_image_size = TARGET_NO_FIELD,
@ -108,7 +108,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_COREBOOT,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_I386_MULTIBOOT_PREFIX,
.data_end = GRUB_KERNEL_I386_MULTIBOOT_DATA_END,
.prefix_end = GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.kernel_image_size = TARGET_NO_FIELD,
@ -130,7 +130,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_I386_PC,
.flags = PLATFORM_FLAGS_LZMA,
.prefix = GRUB_KERNEL_I386_PC_PREFIX,
.data_end = GRUB_KERNEL_I386_PC_DATA_END,
.prefix_end = GRUB_KERNEL_I386_PC_PREFIX_END,
.raw_size = GRUB_KERNEL_I386_PC_RAW_SIZE,
.total_module_size = GRUB_KERNEL_I386_PC_TOTAL_MODULE_SIZE,
.kernel_image_size = GRUB_KERNEL_I386_PC_KERNEL_IMAGE_SIZE,
@ -148,7 +148,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_I386_PC_PXE,
.flags = PLATFORM_FLAGS_LZMA,
.prefix = GRUB_KERNEL_I386_PC_PREFIX,
.data_end = GRUB_KERNEL_I386_PC_DATA_END,
.prefix_end = GRUB_KERNEL_I386_PC_PREFIX_END,
.raw_size = GRUB_KERNEL_I386_PC_RAW_SIZE,
.total_module_size = GRUB_KERNEL_I386_PC_TOTAL_MODULE_SIZE,
.kernel_image_size = GRUB_KERNEL_I386_PC_KERNEL_IMAGE_SIZE,
@ -166,7 +166,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_EFI,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_I386_EFI_PREFIX,
.data_end = GRUB_KERNEL_I386_EFI_DATA_END,
.prefix_end = GRUB_KERNEL_I386_EFI_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.kernel_image_size = TARGET_NO_FIELD,
@ -188,7 +188,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_I386_IEEE1275,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_I386_IEEE1275_PREFIX,
.data_end = GRUB_KERNEL_I386_IEEE1275_DATA_END,
.prefix_end = GRUB_KERNEL_I386_IEEE1275_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.kernel_image_size = TARGET_NO_FIELD,
@ -210,7 +210,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_QEMU,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_I386_QEMU_PREFIX,
.data_end = GRUB_KERNEL_I386_QEMU_DATA_END,
.prefix_end = GRUB_KERNEL_I386_QEMU_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.compressed_size = TARGET_NO_FIELD,
@ -228,7 +228,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_EFI,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_X86_64_EFI_PREFIX,
.data_end = GRUB_KERNEL_X86_64_EFI_DATA_END,
.prefix_end = GRUB_KERNEL_X86_64_EFI_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.kernel_image_size = TARGET_NO_FIELD,
@ -250,7 +250,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_YEELOONG_FLASH,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_MIPS_YEELOONG_PREFIX,
.data_end = GRUB_KERNEL_MIPS_YEELOONG_DATA_END,
.prefix_end = GRUB_KERNEL_MIPS_YEELOONG_PREFIX_END,
.raw_size = GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE,
.total_module_size = GRUB_KERNEL_MIPS_YEELOONG_TOTAL_MODULE_SIZE,
.compressed_size = GRUB_KERNEL_MIPS_YEELOONG_COMPRESSED_SIZE,
@ -270,7 +270,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_YEELOONG_ELF,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_MIPS_YEELOONG_PREFIX,
.data_end = GRUB_KERNEL_MIPS_YEELOONG_DATA_END,
.prefix_end = GRUB_KERNEL_MIPS_YEELOONG_PREFIX_END,
.raw_size = GRUB_KERNEL_MIPS_YEELOONG_RAW_SIZE,
.total_module_size = GRUB_KERNEL_MIPS_YEELOONG_TOTAL_MODULE_SIZE,
.compressed_size = GRUB_KERNEL_MIPS_YEELOONG_COMPRESSED_SIZE,
@ -290,7 +290,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_PPC,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_POWERPC_IEEE1275_PREFIX,
.data_end = GRUB_KERNEL_POWERPC_IEEE1275_DATA_END,
.prefix_end = GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END,
.raw_size = 0,
.total_module_size = TARGET_NO_FIELD,
.kernel_image_size = TARGET_NO_FIELD,
@ -312,7 +312,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_SPARC64_RAW,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX,
.data_end = GRUB_KERNEL_SPARC64_IEEE1275_DATA_END,
.prefix_end = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END,
.raw_size = GRUB_KERNEL_SPARC64_IEEE1275_RAW_SIZE,
.total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE,
.kernel_image_size = GRUB_KERNEL_SPARC64_IEEE1275_KERNEL_IMAGE_SIZE,
@ -330,7 +330,7 @@ struct image_target_desc image_targets[] =
.id = IMAGE_SPARC64_AOUT,
.flags = PLATFORM_FLAGS_NONE,
.prefix = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX,
.data_end = GRUB_KERNEL_SPARC64_IEEE1275_DATA_END,
.prefix_end = GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END,
.raw_size = GRUB_KERNEL_SPARC64_IEEE1275_RAW_SIZE,
.total_module_size = GRUB_KERNEL_SPARC64_IEEE1275_TOTAL_MODULE_SIZE,
.kernel_image_size = GRUB_KERNEL_SPARC64_IEEE1275_KERNEL_IMAGE_SIZE,
@ -578,7 +578,7 @@ generate_image (const char *dir, char *prefix, FILE *out, char *mods[],
total_module_size, &start_address, &rel_section,
&reloc_size, &align, image_target);
if (image_target->prefix + strlen (prefix) + 1 > image_target->data_end)
if (image_target->prefix + strlen (prefix) + 1 > image_target->prefix_end)
grub_util_error (_("prefix is too long"));
strcpy (kernel_img + image_target->prefix, prefix);