Subversion Repositories HelenOS

Rev

Rev 271 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 271 Rev 279
Line 50... Line 50...
50 
	movw %ax, %ss							# initialize stack segment register
 50 
	movw %ax, %ss							# initialize stack segment register
51 
	movl $BOOTSTRAP_OFFSET - 0x400, %esp	# initialize stack pointer
 51 
	movl $BOOTSTRAP_OFFSET - 0x400, %esp	# initialize stack pointer
52
52
53 
	call memmap_arch_init
 53 
	call memmap_arch_init
54
54
55 
	lgdt bsp_bootstrap_gdtr					# initialize Global Descriptor Table register
 55 
	lgdt real_bootstrap_gdtr				# initialize Global Descriptor Table register
56
56
57 
	movl %cr0, %eax
 57 
	movl %cr0, %eax
58 
	orl $0x1, %eax
 58 
	orl $0x1, %eax
59 
	movl %eax, %cr0							# switch to protected mode
 59 
	movl %eax, %cr0							# switch to protected mode
60
60
Line 91... Line 91...
91 
	movl $BOOTSTRAP_OFFSET + BOOT_OFFSET, %edi
 91 
	movl $BOOTSTRAP_OFFSET + BOOT_OFFSET, %edi
92 
	movl $_hardcoded_kernel_size, %ecx
 92 
	movl $_hardcoded_kernel_size, %ecx
93 
	cld
 93 
	cld
94 
	rep movsb
 94 
	rep movsb
95
95
96 
	jmp protected
 96 
	call main_bsp			# never returns
- 
 
 97 
 
- 
 
 98 
	cli
- 
 
 99 
	hlt
97
100
98 
multiboot_image_start:
 101 
multiboot_image_start:
99 
	movl BOOTSTRAP_OFFSET - 0x400, %esp		# initialize stack pointer
 102 
	movl $BOOTSTRAP_OFFSET - 0x400, %esp			# initialize stack pointer
100
103
101 
	lgdt gdtr								# initialize Global Descriptor Table register
 104 
	lgdt protected_bootstrap_gdtr - 0x80000000		# initialize Global Descriptor Table register
102 
 
 105 
 
103 
	movw $KDATA, %ax
 106 
	movw $KDATA, %ax
104 
	movw %ax, %es
 107 
	movw %ax, %es
105 
	movw %ax, %gs
 108 
	movw %ax, %gs
106 
	movw %ax, %fs
 109 
	movw %ax, %fs
107 
	movw %ax, %ds							# kernel data + stack
 110 
	movw %ax, %ds									# kernel data + stack
108 
	movw %ax, %ss
 111 
	movw %ax, %ss
109
112
110 
	jmpl $KTEXT, $multiboot_meeting_point
 113 
	jmpl $KTEXT, $multiboot_meeting_point + BOOT_OFFSET
111 
	multiboot_meeting_point:
 114 
	multiboot_meeting_point:
112
115
113 
	call map_kernel							# map kernel and turn paging on
 116 
	call map_kernel									# map kernel and turn paging on
114
117
115 
protected:
 - 
 
116 
	call main_bsp		# never returns
 118 
	call main_bsp - BOOT_OFFSET						# never returns
117 
 
 119 
 
118 
	cli
 120 
	cli
119 
	hlt
 121 
	hlt
120 
 
 122 
 
121 
.global map_kernel
 123 
.global map_kernel