DWORD equ dword
WORD equ word
BYTE equ byte
PTR equ
_mem_counter equ (BOOT_VAR + 0x9100)
_mem_table equ (BOOT_VAR + 0x9104)
_spinlock_initialize:
mov eax, DWORD PTR [esp+4]
mov DWORD PTR [eax], 0
ret
_buddy_find_block:
push ebx
mov eax, DWORD PTR [eax+12]
mov ebx, ecx
sub edx, eax
sar edx, 2
imul ecx, edx, -858993459
lea eax, [eax+edx*4]
.L4:
cmp DWORD PTR [eax+12], ebx
jne .L7
sub ecx, 1
sub eax, 20
cmp ecx, -1
jne .L4
xor eax, eax
.L7:
pop ebx
ret
@buddy_system_free@8:
push ebp
mov ebp, edx
push edi
push esi
mov esi, edx
push ebx
sub esp, 8
mov ebx, DWORD PTR [edx+12]
mov DWORD PTR [esp+4], ecx
cmp BYTE PTR [ecx+24], bl
mov edi, ebx
je .L17
mov edx, DWORD PTR [ecx+12]
mov DWORD PTR [esp], edx
jmp .L15
.L30:
mov eax, 1
sal eax, cl
add edx, eax
mov eax, DWORD PTR [esp+4]
cmp edx, DWORD PTR [eax+8]
jae .L17
.L31:
lea eax, [edx+edx*4]
mov edx, DWORD PTR [esp]
lea ecx, [edx+eax*4]
cmp ebx, DWORD PTR [ecx+12]
jne .L17
mov eax, DWORD PTR [ecx+8]
test eax, eax
jne .L17
mov eax, DWORD PTR [ecx+4]
cmp esi, ecx
mov edx, DWORD PTR [ecx]
mov DWORD PTR [esi+12], 255
mov DWORD PTR [ecx+12], 255
mov DWORD PTR [eax], edx
mov edx, DWORD PTR [ecx]
mov DWORD PTR [ecx], 0
mov DWORD PTR [edx+4], eax
mov edx, ebp
mov DWORD PTR [ecx+4], 0
jb .L26
mov edx, ecx
.L26:
mov ecx, edi
mov esi, edx
movzx eax, cl
mov ebp, edx
lea ebx, [eax+1]
mov eax, DWORD PTR [esp+4]
mov DWORD PTR [edx+12], ebx
movzx edi, BYTE PTR [eax+24]
mov edx, edi
cmp dl, bl
je .L17
mov edi, ebx
.L15:
mov eax, esi
mov ecx, ebx
sub eax, DWORD PTR [esp]
sar eax, 2
imul edx, eax, -858993459
mov eax, edx
shr eax, cl
test al, 1
je .L30
mov eax, 1
mov ecx, ebx
sal eax, cl
sub edx, eax
mov eax, DWORD PTR [esp+4]
cmp edx, DWORD PTR [eax+8]
jb .L31
.L17:
mov ecx, edi
movzx edx, cl
mov ecx, DWORD PTR [esp+4]
mov eax, DWORD PTR [ecx+28+edx*8]
mov DWORD PTR [ebp], eax
lea eax, [ecx+28+edx*8]
mov DWORD PTR [ebp+4], eax
mov eax, DWORD PTR [ecx+28+edx*8]
mov DWORD PTR [ecx+28+edx*8], ebp
mov DWORD PTR [eax+4], ebp
add esp, 8
pop ebx
pop esi
pop edi
pop ebp
ret
@buddy_system_alloc_block@8:
push ebp
mov ebp, ecx
push edi
mov ecx, 255
push esi
mov eax, ebp
push ebx
sub esp, 4
mov DWORD PTR [esp], edx
call _buddy_find_block
mov ebx, eax
mov eax, DWORD PTR [eax+4]
mov edx, DWORD PTR [ebx]
mov DWORD PTR [eax], edx
mov edx, DWORD PTR [ebx]
mov DWORD PTR [ebx], 0
mov DWORD PTR [edx+4], eax
mov eax, DWORD PTR [ebx+12]
mov DWORD PTR [ebx+4], 0
test eax, eax
jne .L38
jmp .L34
.L35:
mov DWORD PTR [ebx+8], 1
mov edx, esi
mov ecx, ebp
call @buddy_system_free@8
mov eax, DWORD PTR [ebx+12]
mov DWORD PTR [ebx+8], 0
test eax, eax
je .L34
.L38:
lea ecx, [eax-1]
mov edx, DWORD PTR [esp]
mov eax, 20
sal eax, cl
lea edi, [ebx+eax]
mov eax, ebp
mov DWORD PTR [ebx+12], ecx
mov esi, edi
mov DWORD PTR [edi+12], ecx
mov ecx, 255
call _buddy_find_block
cmp edi, eax
jne .L35
mov esi, ebx
mov ebx, edi
jmp .L35
.L34:
mov DWORD PTR [ebx+8], 1
mov eax, ebx
add esp, 4
pop ebx
pop esi
pop edi
pop ebp
ret
_zone_release:
push edi
push esi
push ebx
mov esi, DWORD PTR [esp+16]
mov eax, DWORD PTR [esp+20]
mov edi, DWORD PTR [esp+24]
mov edx, DWORD PTR [esi+4]
add edi, eax
cmp edi, edx
jb .L48
mov ebx, edx
add ebx, DWORD PTR [esi+8]
cmp eax, ebx
ja .L48
cmp eax, edx
mov ecx, eax
jae .L44
mov ecx, edx
.L44:
cmp edi, ebx
jbe .L45
mov edi, ebx
.L45:
cmp ecx, edi
jae .L48
mov ebx, ecx
.L47:
mov edx, DWORD PTR [esi+12]
mov eax, ecx
add ebx, 1
sub eax, DWORD PTR [esi+4]
lea eax, [eax+eax*4]
mov DWORD PTR [edx+8+eax*4], 0
sub ecx, DWORD PTR [esi+4]
lea edx, [ecx+ecx*4]
mov ecx, esi
sal edx, 2
add edx, DWORD PTR [esi+12]
call @buddy_system_free@8
cmp edi, ebx
mov ecx, ebx
ja .L47
.L48:
pop ebx
pop esi
pop edi
ret
_zone_reserve:
push edi
push esi
push ebx
mov esi, DWORD PTR [esp+16]
mov eax, DWORD PTR [esp+20]
mov ebx, DWORD PTR [esp+24]
mov edx, DWORD PTR [esi+4]
add ebx, eax
cmp ebx, edx
jb .L61
mov ecx, edx
add ecx, DWORD PTR [esi+8]
cmp eax, ecx
ja .L61
cmp eax, edx
jae .L54
mov eax, edx
.L54:
cmp ebx, ecx
mov edi, ebx
jbe .L55
mov edi, ecx
.L55:
cmp eax, edi
jae .L61
mov ebx, eax
jmp .L57
.L58:
add ebx, 1
cmp edi, ebx
mov eax, ebx
jbe .L61
.L62:
mov edx, DWORD PTR [esi+4]
.L57:
sub eax, edx
lea eax, [eax+eax*4]
lea edx, [0+eax*4]
add edx, DWORD PTR [esi+12]
mov ecx, DWORD PTR [edx+8]
test ecx, ecx
jne .L58
add ebx, 1
mov ecx, esi
call @buddy_system_alloc_block@8
mov eax, ebx
sub DWORD PTR [esi+16], 1
cmp edi, ebx
ja .L62
.L61:
pop ebx
pop esi
pop edi
ret
@buddy_system_alloc@8:
sub esp, 12
mov DWORD PTR [esp], ebx
lea eax, [ecx+28+edx*8]
mov ebx, edx
mov DWORD PTR [esp+4], esi
mov esi, ecx
mov DWORD PTR [esp+8], edi
cmp DWORD PTR [ecx+32+edx*8], eax
je .L64
mov ecx, DWORD PTR [ecx+32+edx*8]
mov eax, DWORD PTR [ecx+4]
mov edx, DWORD PTR [ecx]
mov DWORD PTR [ecx+8], 1
mov DWORD PTR [eax], edx
mov edx, DWORD PTR [ecx]
mov DWORD PTR [ecx], 0
mov DWORD PTR [edx+4], eax
mov DWORD PTR [ecx+4], 0
.L66:
mov ebx, DWORD PTR [esp]
mov eax, ecx
mov esi, DWORD PTR [esp+4]
mov edi, DWORD PTR [esp+8]
add esp, 12
ret
.L64:
movzx eax, BYTE PTR [ecx+24]
cmp eax, edx
jne .L71
.L67:
xor ecx, ecx
jmp .L66
.L71:
lea edx, [edx+1]
call @buddy_system_alloc@8
test eax, eax
mov edi, eax
je .L67
mov ecx, DWORD PTR [eax+12]
mov edx, 20
mov DWORD PTR [eax+12], ebx
mov DWORD PTR [eax+8], 1
sub ecx, 1
sal edx, cl
mov ecx, esi
add edx, eax
mov DWORD PTR [edx+12], ebx
call @buddy_system_free@8
mov ecx, edi
jmp .L66
_zone_frame_alloc:
sub esp, 8
mov ecx, eax
mov DWORD PTR [esp], ebx
mov ebx, eax
mov DWORD PTR [esp+4], esi
mov esi, edx
call @buddy_system_alloc@8
mov ecx, esi
mov edx, 1
sal edx, cl
mov esi, DWORD PTR [esp+4]
sub DWORD PTR [ebx+16], edx
sub eax, DWORD PTR [ebx+12]
add DWORD PTR [ebx+20], edx
mov ebx, DWORD PTR [esp]
add esp, 8
sar eax, 2
imul eax, eax, -858993459
ret
_frame_set_parent:
mov eax, DWORD PTR [esp+4]
sub eax, DWORD PTR [_z_core+4]
mov ecx, DWORD PTR [esp+8]
mov edx, DWORD PTR [_z_core+12]
lea eax, [eax+eax*4]
mov DWORD PTR [edx+16+eax*4], ecx
ret
@zone_free@8:
sub esp, 8
lea edx, [edx+edx*4]
mov DWORD PTR [esp], ebx
sal edx, 2
mov ebx, ecx
mov DWORD PTR [esp+4], esi
add edx, DWORD PTR [ecx+12]
mov eax, DWORD PTR [edx+8]
mov esi, DWORD PTR [edx+12]
sub eax, 1
test eax, eax
mov DWORD PTR [edx+8], eax
jne .L79
call @buddy_system_free@8
mov eax, 1
mov ecx, esi
sal eax, cl
add DWORD PTR [ebx+16], eax
sub DWORD PTR [ebx+20], eax
.L79:
mov ebx, DWORD PTR [esp]
mov esi, DWORD PTR [esp+4]
add esp, 8
ret
@zone_alloc@8:
sub esp, 8
mov DWORD PTR [esp], ebx
mov ebx, ecx
mov DWORD PTR [esp+4], esi
pushf
pop esi
cli
@@:
pause
mov eax, [_z_core]
test eax, eax
jnz @b
inc eax
xchg [_z_core], eax
test eax, eax
jnz @b
mov eax, ecx
call _zone_frame_alloc
mov edx, DWORD PTR [ebx+4]
mov DWORD PTR [ebx], 0
push esi
popf
mov ebx, DWORD PTR [esp]
add eax, edx
mov esi, DWORD PTR [esp+4]
sal eax, 12
add esp, 8
ret
alloc_page:
_alloc_page:
push ebx
pushf
pop ebx
cli
@@:
pause
mov eax, [_z_core]
test eax, eax
jnz @b
inc eax
xchg [_z_core], eax
test eax, eax
jnz @b
push edx
xor edx, edx
mov eax, _z_core
call _zone_frame_alloc
pop edx
mov [_z_core], 0
push ebx
popf
pop ebx
sal eax, 12
ret
alloc_pages:
_alloc_pages@4:
push ebx
pushf
pop ebx
cli
@@:
pause
mov eax, [_z_core]
test eax, eax
jnz @b
inc eax
xchg [_z_core], eax
test eax, eax
jnz @b
mov eax, DWORD PTR [esp+8]
add eax, 7
and eax, -8
xor ecx, ecx
bsr ecx, eax
inc ecx
push edx
mov edx, ecx
mov eax, _z_core
call _zone_frame_alloc
pop edx
mov [_z_core], 0
push ebx
popf
pop ebx
sal eax, 12
ret 4
_zone_create:
push esi
push ebx
sub esp, 4
mov ebx, DWORD PTR [esp+16]
mov esi, DWORD PTR [esp+24]
mov DWORD PTR [esp], ebx
call _spinlock_initialize
mov eax, DWORD PTR [esp+20]
mov DWORD PTR [ebx+8], esi
mov DWORD PTR [ebx+16], esi
mov DWORD PTR [ebx+20], 0
mov DWORD PTR [ebx+4], eax
xor eax, eax
bsr eax, esi
xor edx, edx
mov BYTE PTR [ebx+24], al
.L81:
lea eax, [ebx+28+edx*8]
mov DWORD PTR [ebx+28+edx*8], eax
mov DWORD PTR [ebx+32+edx*8], eax
movzx eax, BYTE PTR [ebx+24]
add edx, 1
cmp eax, edx
jae .L81
lea ecx, [esi+esi*4]
sal ecx, 2
call @balloc@4
test esi, esi
mov DWORD PTR [ebx+12], eax
je .L83
xor ecx, ecx
xor edx, edx
.L85:
mov eax, edx
add ecx, 1
add eax, DWORD PTR [ebx+12]
add edx, 20
cmp ecx, esi
mov DWORD PTR [eax+8], 1
mov DWORD PTR [eax+12], 0
jne .L85
.L83:
add esp, 4
mov eax, 1
pop ebx
pop esi
ret
_init_mm:
push ebx
sub esp, 24
mov eax, DWORD PTR [_mem_amount]
mov DWORD PTR [esp], .LC3
mov ebx, eax
shr ebx, 12
mov DWORD PTR [esp+8], ebx
mov DWORD PTR [esp+4], eax
call _printf
mov eax, DWORD PTR [_pg_balloc]
mov DWORD PTR [esp], .LC4
mov DWORD PTR [esp+8], eax
lea eax, [ebx+ebx*4]
sal eax, 2
mov DWORD PTR [esp+4], eax
call _printf
mov DWORD PTR [esp+8], ebx
mov DWORD PTR [esp+4], 0
mov DWORD PTR [esp], _z_core
call _zone_create
mov DWORD PTR [esp+8], ebx
mov DWORD PTR [esp+4], 0
mov DWORD PTR [esp], _z_core
call _zone_release
mov eax, DWORD PTR [_pg_balloc]
mov DWORD PTR [esp+4], 0
mov DWORD PTR [esp], _z_core
shr eax, 12
mov DWORD PTR [esp+8], eax
call _zone_reserve
add esp, 24
pop ebx
ret
.LC3:
db "last page = %x total pages = %x",10,0
.LC4:
db "conf_size = %x free mem start =%x",10,0
_frame_free:
push ebx
mov edx, DWORD PTR [esp+8]
pushf
pop ebx
cli
@@:
pause
mov eax, [_z_core]
test eax, eax
jnz @b
inc eax
xchg [_z_core], eax
test eax, eax
jnz @b
mov ecx, _z_core
shr edx, 12
call @zone_free@8
mov [_z_core], 0
push ebx
popf
pop ebx
ret
_core_free:
push ebx
mov edx, DWORD PTR [esp+8]
pushf
pop ebx
cli
@@:
pause
mov eax, [_z_core]
test eax, eax
jnz @b
inc eax
xchg [_z_core], eax
test eax, eax
jnz @b
mov ecx, _z_core
shr edx, 12
call @zone_free@8
mov [_z_core], 0
push ebx
popf
pop ebx
ret
_core_alloc:
push ebx
pushf
pop ebx
cli
@@:
pause
mov eax, [_z_core]
test eax, eax
jnz @b
inc eax
xchg [_z_core], eax
test eax, eax
jnz @b
mov edx, DWORD PTR [esp+8]
mov eax, _z_core
call _zone_frame_alloc
mov [_z_core], 0
push ebx
popf
pop ebx
sal eax, 12
ret
restore DWORD
restore WORD
restore BYTE
restore PTR