forked from KolibriOS/kolibrios
152 lines
2.9 KiB
NASM
152 lines
2.9 KiB
NASM
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DWORD equ dword
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WORD equ word
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BYTE equ byte
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PTR equ
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_init:
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push esi
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push ebx
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sub esp, 4
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mov eax, DWORD PTR [_boot_mbi]
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test BYTE PTR [eax], 2
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je .L2
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push ecx
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push ecx
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push DWORD PTR [eax+12]
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push .LC0
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call _printf
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add esp, 16
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.L2:
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mov eax, DWORD PTR [_boot_mbi]
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test BYTE PTR [eax], 4
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je L4
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push edx
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push edx
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push DWORD PTR [eax+16]
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push .LC1
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call _printf
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add esp, 16
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.L4:
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mov eax, DWORD PTR [_boot_mbi]
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test BYTE PTR [eax], 8
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je .L6
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push esi
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xor esi, esi
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push DWORD PTR [eax+24]
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push DWORD PTR [eax+20]
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push .LC2
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call _printf
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mov eax, DWORD PTR [_boot_mbi]
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mov ebx, DWORD PTR [eax+24]
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jmp .L22
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.L9:
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mov eax, DWORD PTR [ebx-12]
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inc esi
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push DWORD PTR [ebx-8]
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mov DWORD PTR [_pg_balloc], eax
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push eax
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push DWORD PTR [ebx-16]
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push .LC3
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call _printf
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.L22:
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mov eax, DWORD PTR [_boot_mbi]
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add esp, 16
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mov edx, ebx
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add ebx, 16
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cmp esi, DWORD PTR [eax+20]
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jb .L9
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mov edx, DWORD PTR [edx-16]
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push ebx
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push ebx
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sub edx, 536870912
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lea eax, [edx+512]
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mov DWORD PTR [_rd_fat], eax
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lea eax, [edx+4790]
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push edx
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push .LC4
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mov DWORD PTR [_rd_fat_end], eax
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lea eax, [edx+9728]
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mov DWORD PTR [_rd_root], eax
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lea eax, [edx+16896]
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mov DWORD PTR [_rd_base], edx
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mov DWORD PTR [_rd_root_end], eax
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call _printf
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add esp, 16
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.L6:
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mov eax, DWORD PTR [_boot_mbi]
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xor esi, esi
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test BYTE PTR [eax], 64
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je .L13
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push ecx
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push DWORD PTR [eax+44]
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push DWORD PTR [eax+48]
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push .LC5
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call _printf
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mov eax, DWORD PTR [_boot_mbi]
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add esp, 16
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mov ebx, DWORD PTR [eax+48]
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jmp .L14
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.L15:
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push edx
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push DWORD PTR [ebx+20]
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push DWORD PTR [ebx+12]
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push DWORD PTR [ebx+16]
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push DWORD PTR [ebx+4]
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push DWORD PTR [ebx+8]
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push DWORD PTR [ebx]
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push .LC6
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call _printf
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add esp, 32
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cmp DWORD PTR [ebx+20], 1
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jne .L16
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mov eax, DWORD PTR [ebx+4]
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add eax, DWORD PTR [ebx+12]
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and eax, -4096
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cmp esi, eax
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jae .L16
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mov esi, eax
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.L16:
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mov eax, DWORD PTR [ebx]
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add eax, 4
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lea ebx, [eax+ebx]
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.L14:
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mov edx, DWORD PTR [_boot_mbi]
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mov eax, DWORD PTR [edx+48]
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add eax, DWORD PTR [edx+44]
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cmp ebx, eax
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jb .L15
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cmp esi, 268435456
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jbe .L13
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mov esi, 268435456
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.L13:
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mov DWORD PTR [_mem_amount], esi
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pop eax
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pop ebx
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pop esi
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ret
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.LC0:
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db "boot_device = 0x%x",10,0
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.LC1:
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db "cmdline = %s",10,0
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.LC2:
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db "mods_count = %d, mods_addr = 0x%x",10,0
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.LC3:
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db " mod_start = 0x%x, mod_end = 0x%x, string = %s",10,0
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.LC4:
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db " rd_base = %x",10,0
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.LC5:
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db "mmap_addr = 0x%x, mmap_length = 0x%x",10,0
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.LC6:
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db " size = 0x%x, base_addr = 0x%x%x, length = 0x%x%x, type = 0x%x",10,0
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restore DWORD
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restore WORD
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restore BYTE
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restore PTR
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