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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-10-25 13:19:10 +02:00
commit dc5aeea5b9
103 changed files with 2530 additions and 690 deletions
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63
grub-core/kern/i386/pc/lzma_decode.S
View file

@ -77,69 +77,6 @@
#define RepLenCoder (LenCoder + kNumLenProbs)
#define Literal (RepLenCoder + kNumLenProbs)
#if 0
DbgOut:
pushf
pushl %ebp
pushl %edi
pushl %esi
pushl %edx
pushl %ecx
pushl %ebx
pushl %eax
call _DebugPrint
popl %eax
popl %ebx
popl %ecx
popl %edx
popl %esi
popl %edi
popl %ebp
popf
ret
/*
* int LzmaDecodeProperties(CLzmaProperties *propsRes,
* const unsigned char *propsData,
* int size);
*/
_LzmaDecodePropertiesA:
movb (%edx), %dl
xorl %ecx, %ecx
1:
cmpb $45, %dl
jb 2f
incl %ecx
subb $45, %dl
jmp 1b
2:
movl %ecx, 8(%eax) /* pb */
xorl %ecx, %ecx
1:
cmpb $9, %dl
jb 2f
incl %ecx
subb $9, %dl
2:
movl %ecx, 4(%eax) /* lp */
movb %dl, %cl
movl %ecx, (%eax) /* lc */
#endif
#ifndef ASM_FILE
xorl %eax, %eax
#endif
ret
#define out_size 8(%ebp)
#define now_pos -4(%ebp)

115
grub-core/kern/i386/pc/startup.S
View file

@ -100,6 +100,8 @@ VARIABLE(grub_install_dos_part)
.long 0xFFFFFFFF
VARIABLE(grub_install_bsd_part)
.long 0xFFFFFFFF
reed_solomon_redundancy:
.long 0
#ifdef APPLE_CC
bss_start:
@ -107,7 +109,58 @@ bss_start:
bss_end:
.long 0
#endif
/*
* This is the area for all of the special variables.
*/
VARIABLE(grub_boot_drive)
.byte 0
/* the real mode code continues... */
LOCAL (codestart):
cli /* we're not safe here! */
/* set up %ds, %ss, and %es */
xorw %ax, %ax
movw %ax, %ds
movw %ax, %ss
movw %ax, %es
/* set up the real mode/BIOS stack */
movl $GRUB_MEMORY_MACHINE_REAL_STACK, %ebp
movl %ebp, %esp
sti /* we're safe again */
/* save the boot drive */
ADDR32 movb %dl, EXT_C(grub_boot_drive)
/* reset disk system (%ah = 0) */
int $0x13
/* transition to protected mode */
DATA32 call real_to_prot
/* The ".code32" directive takes GAS out of 16-bit mode. */
.code32
incl %eax
call grub_gate_a20
movl EXT_C(grub_compressed_size), %edx
addl $(GRUB_KERNEL_MACHINE_RAW_SIZE - GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART), %edx
movl reed_solomon_redundancy, %ecx
leal _start + GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART, %eax
testl %edx, %edx
jz post_reed_solomon
call EXT_C (grub_reed_solomon_recover)
jmp post_reed_solomon
#include <rs_decoder.S>
.text
. = _start + GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART
/*
* Support for booting GRUB from a Multiboot boot loader (e.g. GRUB itself).
* This uses the a.out kludge to load raw binary to the area starting at 1MB,
@ -171,38 +224,8 @@ multiboot_trampoline:
movb $0xFF, %dh
/* enter the usual booting */
call prot_to_real
.code16
/* the real mode code continues... */
LOCAL (codestart):
cli /* we're not safe here! */
/* set up %ds, %ss, and %es */
xorw %ax, %ax
movw %ax, %ds
movw %ax, %ss
movw %ax, %es
/* set up the real mode/BIOS stack */
movl $GRUB_MEMORY_MACHINE_REAL_STACK, %ebp
movl %ebp, %esp
sti /* we're safe again */
/* save the boot drive */
ADDR32 movb %dl, EXT_C(grub_boot_drive)
/* reset disk system (%ah = 0) */
int $0x13
/* transition to protected mode */
DATA32 call real_to_prot
/* The ".code32" directive takes GAS out of 16-bit mode. */
.code32
incl %eax
call grub_gate_a20
post_reed_solomon:
#ifdef ENABLE_LZMA
movl $GRUB_MEMORY_MACHINE_DECOMPRESSION_ADDR, %edi
@ -271,15 +294,6 @@ LOCAL (codestart):
*/
call EXT_C(grub_main)
/*
* This is the area for all of the special variables.
*/
VARIABLE(grub_boot_drive)
.byte 0
.p2align 2 /* force 4-byte alignment */
#include "../realmode.S"
/*
@ -577,7 +591,7 @@ FUNCTION(grub_console_putchar)
LOCAL(bypass_table):
.word 0x0100 | '\e',0x0f00 | '\t', 0x0e00 | '\b', 0x1c00 | '\r'
.word 0x011b, 0x0f00 | '\t', 0x0e00 | '\b', 0x1c00 | '\r'
.word 0x1c00 | '\n'
LOCAL(bypass_table_end):
@ -601,6 +615,7 @@ LOCAL(bypass_table_end):
FUNCTION(grub_console_getkey)
pushl %ebp
pushl %edi
call prot_to_real
.code16
@ -630,15 +645,16 @@ FUNCTION(grub_console_getkey)
jz 1f
andl %edx, %eax
cmp %eax, 0x20
ja 2f
cmpl $0x20, %eax
jae 2f
movl %edx, %eax
leal LOCAL(bypass_table), %esi
leal LOCAL(bypass_table), %edi
movl $((LOCAL(bypass_table_end) - LOCAL(bypass_table)) / 2), %ecx
repne cmpsw
repne scasw
jz 3f
addl $('a' - 1 | GRUB_TERM_CTRL), %eax
andl $0xff, %eax
addl $(('a' - 1) | GRUB_TERM_CTRL), %eax
jmp 2f
3:
andl $0xff, %eax
@ -647,7 +663,8 @@ FUNCTION(grub_console_getkey)
1: movl %edx, %eax
shrl $8, %eax
orl $GRUB_TERM_EXTENDED, %eax
2:
2:
popl %edi
popl %ebp
ret
@ -803,6 +820,10 @@ FUNCTION(grub_console_setcursor)
DATA32 call real_to_prot
.code32
cmp %cl, %ch
jb 3f
movw $0x0d0e, %cx
3:
movw %cx, console_cursor_shape
1:
/* set %cx to the designated cursor shape */