forked from KolibriOS/kolibrios
519 lines
12 KiB
PHP
519 lines
12 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
|
|
;; Distributed under terms of the GNU General Public License ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
$Revision$
|
|
|
|
|
|
|
|
MEM_LIST_OFFSET equ 8
|
|
FREE_BLOCK equ 4
|
|
USED_BLOCK equ 8
|
|
DONT_FREE_BLOCK equ 10h
|
|
|
|
|
|
|
|
;;;;;;;;;;;;;; USER ;;;;;;;;;;;;;;;;;
|
|
|
|
HEAP_TOP equ 0x7FC00000
|
|
|
|
align 4
|
|
_init_user_heap:
|
|
init_heap:
|
|
|
|
mov ebx,[current_slot]
|
|
mov eax, [ebx+APPDATA.heap_top]
|
|
test eax, eax
|
|
jz @F
|
|
sub eax,[ebx+APPDATA.heap_base]
|
|
sub eax, 4096
|
|
ret
|
|
@@:
|
|
mov esi, [ebx+APPDATA.mem_size]
|
|
add esi, 4095
|
|
and esi, not 4095
|
|
mov [ebx+APPDATA.mem_size], esi
|
|
mov eax, HEAP_TOP
|
|
mov [ebx+APPDATA.heap_base], esi
|
|
mov [ebx+APPDATA.heap_top], eax
|
|
|
|
sub eax, esi
|
|
shr esi, 10
|
|
mov ecx, eax
|
|
sub eax, 4096
|
|
or ecx, FREE_BLOCK
|
|
mov [page_tabs+esi], ecx
|
|
ret
|
|
|
|
align 4
|
|
_UserAlloc:
|
|
proc user_alloc stdcall, alloc_size:dword
|
|
|
|
push ebx
|
|
push esi
|
|
push edi
|
|
|
|
mov ecx, [alloc_size]
|
|
add ecx, (4095+4096)
|
|
and ecx, not 4095
|
|
|
|
mov ebx, [current_slot]
|
|
mov esi, dword [ebx+APPDATA.heap_base] ; heap_base
|
|
mov edi, dword [ebx+APPDATA.heap_top] ; heap_top
|
|
l_0:
|
|
cmp esi, edi
|
|
jae m_exit
|
|
|
|
mov ebx, esi
|
|
shr ebx, 12
|
|
mov eax, [page_tabs+ebx*4]
|
|
test al, FREE_BLOCK
|
|
jz test_used
|
|
and eax, 0xFFFFF000
|
|
cmp eax, ecx ;alloc_size
|
|
jb m_next
|
|
jz @f
|
|
|
|
lea edx, [esi+ecx]
|
|
sub eax, ecx
|
|
or al, FREE_BLOCK
|
|
shr edx, 12
|
|
mov [page_tabs+edx*4], eax
|
|
@@:
|
|
or ecx, USED_BLOCK
|
|
mov [page_tabs+ebx*4], ecx
|
|
shr ecx, 12
|
|
inc ebx
|
|
dec ecx
|
|
jz .no
|
|
@@:
|
|
mov dword [page_tabs+ebx*4], 2
|
|
inc ebx
|
|
dec ecx
|
|
jnz @B
|
|
.no:
|
|
|
|
mov edx, [current_slot]
|
|
mov ebx, [alloc_size]
|
|
add ebx, 0xFFF
|
|
and ebx, not 0xFFF
|
|
add ebx, [edx+APPDATA.mem_size]
|
|
call update_mem_size
|
|
|
|
lea eax, [esi+4096]
|
|
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
ret
|
|
test_used:
|
|
test al, USED_BLOCK
|
|
jz m_exit
|
|
|
|
and eax, 0xFFFFF000
|
|
m_next:
|
|
add esi, eax
|
|
jmp l_0
|
|
m_exit:
|
|
xor eax, eax
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
ret
|
|
endp
|
|
|
|
align 4
|
|
_UserFree:
|
|
proc user_free stdcall, base:dword
|
|
|
|
push esi
|
|
|
|
mov esi, [base]
|
|
test esi, esi
|
|
jz .exit
|
|
|
|
push ebx
|
|
|
|
xor ebx, ebx
|
|
shr esi, 12
|
|
mov eax, [page_tabs+(esi-1)*4]
|
|
test al, USED_BLOCK
|
|
jz .cantfree
|
|
|
|
test al, DONT_FREE_BLOCK
|
|
jnz .cantfree
|
|
|
|
push edi
|
|
|
|
and eax, not 4095
|
|
mov edi, eax
|
|
or al, FREE_BLOCK
|
|
mov [page_tabs+(esi-1)*4], eax
|
|
sub edi, 4096
|
|
mov ebx, edi
|
|
shr edi, 12
|
|
jz .released
|
|
|
|
.release:
|
|
xor ecx, ecx
|
|
xchg ecx, [page_tabs+esi*4]
|
|
test cl, 1
|
|
jz @F
|
|
|
|
call @core_free@4
|
|
mov eax, esi
|
|
shl eax, 12
|
|
invlpg [eax]
|
|
@@:
|
|
inc esi
|
|
dec edi
|
|
jnz .release
|
|
.released:
|
|
mov edx, [current_slot]
|
|
mov esi, dword [edx+APPDATA.heap_base]
|
|
mov edi, dword [edx+APPDATA.heap_top]
|
|
sub ebx, [edx+APPDATA.mem_size]
|
|
neg ebx
|
|
call update_mem_size
|
|
call user_normalize
|
|
pop edi
|
|
pop ebx
|
|
pop esi
|
|
ret
|
|
.exit:
|
|
xor eax, eax
|
|
inc eax
|
|
pop esi
|
|
ret
|
|
.cantfree:
|
|
xor eax, eax
|
|
pop ebx
|
|
pop esi
|
|
ret
|
|
endp
|
|
|
|
user_normalize:
|
|
; in: esi=heap_base, edi=heap_top
|
|
; out: eax=0 <=> OK
|
|
; destroys: ebx,edx,esi,edi
|
|
shr esi, 12
|
|
shr edi, 12
|
|
@@:
|
|
mov eax, [page_tabs+esi*4]
|
|
test al, USED_BLOCK
|
|
jz .test_free
|
|
shr eax, 12
|
|
add esi, eax
|
|
jmp @B
|
|
.test_free:
|
|
test al, FREE_BLOCK
|
|
jz .err
|
|
mov edx, eax
|
|
shr edx, 12
|
|
add edx, esi
|
|
cmp edx, edi
|
|
jae .exit
|
|
|
|
mov ebx, [page_tabs+edx*4]
|
|
test bl, USED_BLOCK
|
|
jz .next_free
|
|
|
|
shr ebx, 12
|
|
add edx, ebx
|
|
mov esi, edx
|
|
jmp @B
|
|
.next_free:
|
|
test bl, FREE_BLOCK
|
|
jz .err
|
|
and dword [page_tabs+edx*4], 0
|
|
add eax, ebx
|
|
and eax, not 4095
|
|
or eax, FREE_BLOCK
|
|
mov [page_tabs+esi*4], eax
|
|
jmp @B
|
|
.exit:
|
|
xor eax, eax
|
|
inc eax
|
|
ret
|
|
.err:
|
|
xor eax, eax
|
|
ret
|
|
|
|
user_realloc:
|
|
; in: eax = pointer, ebx = new size
|
|
; out: eax = new pointer or NULL
|
|
test eax, eax
|
|
jnz @f
|
|
; realloc(NULL,sz) - same as malloc(sz)
|
|
push ebx
|
|
call user_alloc
|
|
ret
|
|
@@:
|
|
push ecx edx
|
|
lea ecx, [eax - 0x1000]
|
|
shr ecx, 12
|
|
mov edx, [page_tabs+ecx*4]
|
|
test dl, USED_BLOCK
|
|
jnz @f
|
|
; attempt to realloc invalid pointer
|
|
.ret0:
|
|
pop edx ecx
|
|
xor eax, eax
|
|
ret
|
|
@@:
|
|
test dl, DONT_FREE_BLOCK
|
|
jnz .ret0
|
|
add ebx, 0x1FFF
|
|
shr edx, 12
|
|
shr ebx, 12
|
|
; edx = allocated size, ebx = new size
|
|
add edx, ecx
|
|
add ebx, ecx
|
|
cmp edx, ebx
|
|
jb .realloc_add
|
|
; release part of allocated memory
|
|
|
|
push ecx
|
|
.loop:
|
|
cmp edx, ebx
|
|
jz .release_done
|
|
dec edx
|
|
xor ecx, ecx
|
|
xchg ecx, [page_tabs+edx*4]
|
|
test al, 1
|
|
jz .loop
|
|
|
|
push edx
|
|
call @core_free@4
|
|
pop edx
|
|
mov eax, edx
|
|
shl eax, 12
|
|
invlpg [eax]
|
|
jmp .loop
|
|
.release_done:
|
|
|
|
pop ecx
|
|
|
|
sub ebx, ecx
|
|
cmp ebx, 1
|
|
jnz .nofreeall
|
|
mov eax, [page_tabs+ecx*4]
|
|
and eax, not 0xFFF
|
|
mov edx, [current_slot]
|
|
mov ebx, [APPDATA.mem_size+edx]
|
|
sub ebx, eax
|
|
add ebx, 0x1000
|
|
or al, FREE_BLOCK
|
|
mov [page_tabs+ecx*4], eax
|
|
push esi edi
|
|
mov esi, [APPDATA.heap_base+edx]
|
|
mov edi, [APPDATA.heap_top+edx]
|
|
call update_mem_size
|
|
call user_normalize
|
|
pop edi esi
|
|
jmp .ret0 ; all freed
|
|
.nofreeall:
|
|
sub edx, ecx
|
|
shl ebx, 12
|
|
or ebx, USED_BLOCK
|
|
xchg [page_tabs+ecx*4], ebx
|
|
shr ebx, 12
|
|
sub ebx, edx
|
|
push ebx ecx edx
|
|
mov edx, [current_slot]
|
|
shl ebx, 12
|
|
sub ebx, [APPDATA.mem_size+edx]
|
|
neg ebx
|
|
call update_mem_size
|
|
pop edx ecx ebx
|
|
lea eax, [ecx+1]
|
|
shl eax, 12
|
|
push eax
|
|
add ecx, edx
|
|
lea edx, [ecx+ebx]
|
|
shl ebx, 12
|
|
jz .ret
|
|
push esi
|
|
mov esi, [current_slot]
|
|
mov esi, [APPDATA.heap_top+esi]
|
|
shr esi, 12
|
|
@@:
|
|
cmp edx, esi
|
|
jae .merge_done
|
|
mov eax, [page_tabs+edx*4]
|
|
test al, USED_BLOCK
|
|
jnz .merge_done
|
|
and dword [page_tabs+edx*4], 0
|
|
shr eax, 12
|
|
add edx, eax
|
|
shl eax, 12
|
|
add ebx, eax
|
|
jmp @b
|
|
.merge_done:
|
|
pop esi
|
|
or ebx, FREE_BLOCK
|
|
mov [page_tabs+ecx*4], ebx
|
|
.ret:
|
|
pop eax edx ecx
|
|
ret
|
|
.realloc_add:
|
|
; get some additional memory
|
|
mov eax, [current_slot]
|
|
mov eax, [APPDATA.heap_top+eax]
|
|
shr eax, 12
|
|
cmp edx, eax
|
|
jae .cant_inplace
|
|
mov eax, [page_tabs+edx*4]
|
|
test al, FREE_BLOCK
|
|
jz .cant_inplace
|
|
shr eax, 12
|
|
add eax, edx
|
|
sub eax, ebx
|
|
jb .cant_inplace
|
|
jz @f
|
|
shl eax, 12
|
|
or al, FREE_BLOCK
|
|
mov [page_tabs+ebx*4], eax
|
|
@@:
|
|
mov eax, ebx
|
|
sub eax, ecx
|
|
shl eax, 12
|
|
or al, USED_BLOCK
|
|
mov [page_tabs+ecx*4], eax
|
|
lea eax, [ecx+1]
|
|
shl eax, 12
|
|
push eax
|
|
push edi
|
|
lea edi, [page_tabs+edx*4]
|
|
mov eax, 2
|
|
sub ebx, edx
|
|
mov ecx, ebx
|
|
cld
|
|
rep stosd
|
|
pop edi
|
|
mov edx, [current_slot]
|
|
shl ebx, 12
|
|
add ebx, [APPDATA.mem_size+edx]
|
|
call update_mem_size
|
|
pop eax edx ecx
|
|
ret
|
|
.cant_inplace:
|
|
push esi edi
|
|
mov eax, [current_slot]
|
|
mov esi, [APPDATA.heap_base+eax]
|
|
mov edi, [APPDATA.heap_top+eax]
|
|
shr esi, 12
|
|
shr edi, 12
|
|
sub ebx, ecx
|
|
.find_place:
|
|
cmp esi, edi
|
|
jae .place_not_found
|
|
mov eax, [page_tabs+esi*4]
|
|
test al, FREE_BLOCK
|
|
jz .next_place
|
|
shr eax, 12
|
|
cmp eax, ebx
|
|
jae .place_found
|
|
add esi, eax
|
|
jmp .find_place
|
|
.next_place:
|
|
shr eax, 12
|
|
add esi, eax
|
|
jmp .find_place
|
|
.place_not_found:
|
|
pop edi esi
|
|
jmp .ret0
|
|
.place_found:
|
|
sub eax, ebx
|
|
jz @f
|
|
push esi
|
|
add esi, ebx
|
|
shl eax, 12
|
|
or al, FREE_BLOCK
|
|
mov [page_tabs+esi*4], eax
|
|
pop esi
|
|
@@:
|
|
mov eax, ebx
|
|
shl eax, 12
|
|
or al, USED_BLOCK
|
|
mov [page_tabs+esi*4], eax
|
|
inc esi
|
|
mov eax, esi
|
|
shl eax, 12
|
|
push eax
|
|
mov eax, [page_tabs+ecx*4]
|
|
and eax, not 0xFFF
|
|
or al, FREE_BLOCK
|
|
sub edx, ecx
|
|
mov [page_tabs+ecx*4], eax
|
|
inc ecx
|
|
dec ebx
|
|
dec edx
|
|
jz .no
|
|
@@:
|
|
xor eax, eax
|
|
xchg eax, [page_tabs+ecx*4]
|
|
mov [page_tabs+esi*4], eax
|
|
mov eax, ecx
|
|
shl eax, 12
|
|
invlpg [eax]
|
|
inc esi
|
|
inc ecx
|
|
dec ebx
|
|
dec edx
|
|
jnz @b
|
|
.no:
|
|
push ebx
|
|
mov edx, [current_slot]
|
|
shl ebx, 12
|
|
add ebx, [APPDATA.mem_size+edx]
|
|
call update_mem_size
|
|
pop ebx
|
|
@@:
|
|
mov dword [page_tabs+esi*4], 2
|
|
inc esi
|
|
dec ebx
|
|
jnz @b
|
|
pop eax edi esi edx ecx
|
|
ret
|
|
|
|
if 0
|
|
align 4
|
|
proc alloc_dll
|
|
pushf
|
|
cli
|
|
bsf eax, [dll_map]
|
|
jnz .find
|
|
popf
|
|
xor eax, eax
|
|
ret
|
|
.find:
|
|
btr [dll_map], eax
|
|
popf
|
|
shl eax, 5
|
|
add eax, dll_tab
|
|
ret
|
|
endp
|
|
|
|
align 4
|
|
proc alloc_service
|
|
pushf
|
|
cli
|
|
bsf eax, [srv_map]
|
|
jnz .find
|
|
popf
|
|
xor eax, eax
|
|
ret
|
|
.find:
|
|
btr [srv_map], eax
|
|
popf
|
|
shl eax,0x02
|
|
lea eax,[srv_tab+eax+eax*8] ;srv_tab+eax*36
|
|
ret
|
|
endp
|
|
|
|
end if
|