WebSVN – Kolibri OS – Diff – /kernel/trunk/core/taskman.inc


$Revision: 519 $
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;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
GREEDY_KERNEL  equ 0
 
struc APP_HEADER_00
{ .banner      dq ?
  .version     dd ?    ;+8
  .start       dd ?    ;+12
  .i_end       dd ?    ;+16
  .mem_size    dd ?    ;+20
  .i_param     dd ?    ;+24
}
 
struc APP_HEADER_01
{ .banner      dq ?
  .version     dd ?    ;+8
  .start       dd ?    ;+12
  .i_end       dd ?    ;+16
  .mem_size    dd ?    ;+20
  .stack_top   dd ?    ;+24
  .i_param     dd ?    ;+28
  .i_icon      dd ?    ;+32
}
 
 
struc APP_PARAMS
{ .app_cmdline   ;0x00
  .app_path      ;0x04
  .app_eip       ;0x08
  .app_esp       ;0x0C
  .app_mem       ;0x10
}
 
macro _clear_ op
{  mov ecx, op/4
   xor eax, eax
   cld
   rep stosd
}
 
 
align 4
proc fs_execute
 
;fn_read:dword, file_size:dword, cluster:dword
 
; ebx - cmdline
; edx - flags
; ebp - full filename
; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it
 
           locals
             cmdline       rd 64        ;256/4
             filename      rd 256       ;1024/4
             flags         dd ?
 
             save_cr3      dd ?
             slot          dd ?
             slot_base     dd ?
             file_base     dd ?
             file_size     dd ?
                                          ;app header data
             hdr_cmdline   dd ? ;0x00
             hdr_path      dd ? ;0x04
             hdr_eip       dd ? ;0x08
             hdr_esp       dd ? ;0x0C
             hdr_mem       dd ? ;0x10
             hdr_i_end     dd ? ;0x14
           endl
 
           pushad
 
 
           mov [flags], edx
 
; [ebp]  pointer to filename
 
           lea eax, [filename]
           mov dword [eax+1020],0              ;force terminate
                                               ;string
           stdcall strncpy, eax, [ebp], 1023
 
           mov [cmdline], ebx
           test ebx, ebx
           jz @F
 
           lea eax, [cmdline]
           mov dword [eax+252], 0
           stdcall strncpy, eax, ebx, 255
@@:
           lea eax, [filename]
           stdcall load_file, eax
           mov  ecx, -ERROR_FILE_NOT_FOUND
           test eax, eax
           jz .err_file
 
           mov [file_base], eax
           mov [file_size], ebx
 
           lea ebx, [hdr_cmdline]
           call test_app_header
           mov ecx, -0x1F
           test eax, eax
           jz .err_hdr
 
           ;mov esi, new_process_loading
           ;call sys_msg_board_str       ; write message to message board
           DEBUGF 1,"%s",new_process_loading
 
.wait_lock:
           cmp [application_table_status],0
           je .get_lock
           call   change_task
           jmp .wait_lock
 
.get_lock:
           mov eax, 1
           xchg eax, [application_table_status]
           cmp eax, 0
           jne .wait_lock
 
           call set_application_table_status
 
           call get_new_process_place
           test eax, eax
           mov ecx, -0x20      ; too many processes
           jz .err
 
           mov [slot], eax
           shl eax, 8
           add eax, SLOT_BASE
           mov [slot_base], eax
           mov edi, eax
           _clear_ 256     ;clean extended information about process
 
; write application name
           lea eax, [filename]
 
           stdcall strrchr,  eax, '/'  ; now eax points to name without path
 
           lea esi, [eax+1]
           test eax, eax
           jnz @F
           lea esi, [filename]
@@:
           mov ecx, 8  ; 8 chars for name
           mov edi, [slot_base]
.copy_process_name_loop:
           lodsb
           cmp al, '.'
           jz .copy_process_name_done
           test al, al
           jz .copy_process_name_done
           stosb
           loop .copy_process_name_loop
.copy_process_name_done:
 
           mov ebx, cr3
           mov [save_cr3], ebx
 
           stdcall create_app_space,[hdr_mem],[file_base],[file_size]
           mov ecx, -30  ; no memory
           test eax, eax
           jz .failed
 
           mov   ebx,[slot_base]
           mov   [ebx+APPDATA.dir_table],eax
           mov   eax,[hdr_mem]
           mov   [ebx+APPDATA.mem_size],eax
 
if GREEDY_KERNEL
else
           mov ecx, [hdr_mem]
           mov edi, [file_size]
           add edi, 4095
           and edi, not 4095
           sub ecx, edi
           jna @F
 
           xor eax, eax
      ;     add edi, new_app_base
           cld
           rep stosb
@@:
end if
 
; release only virtual space, not phisical memory
 
           stdcall free_kernel_space, [file_base]
           lea eax, [hdr_cmdline]
           lea ebx, [cmdline]
           lea ecx, [filename]
           stdcall set_app_params ,[slot],eax,ebx,ecx,[flags]
 
           mov eax, [save_cr3]
           call set_cr3
 
           xor ebx, ebx
           mov [application_table_status],ebx ;unlock application_table_status mutex
           mov eax,[process_number]  ;set result
           ret
.failed:
           mov eax, [save_cr3]
           call set_cr3
.err:
.err_hdr:
           stdcall kernel_free,[file_base]
.err_file:
           xor eax, eax
           mov [application_table_status],eax
           mov eax, ecx
           ret
endp
 
align 4
test_app_header:
           virtual at eax
             APP_HEADER_00 APP_HEADER_00
           end virtual
           virtual at eax
             APP_HEADER_01 APP_HEADER_01
           end virtual
 
           cmp dword [eax], 'MENU'
           jne .fail
           cmp word [eax+4],'ET'
           jne .fail
 
           cmp [eax+6], word '00'
           jne  .check_01_header
 
           mov  ecx,[APP_HEADER_00.start]
           mov  [ebx+0x08], ecx                ;app_eip
           mov  edx,[APP_HEADER_00.mem_size]
           mov  [ebx+0x10], edx                ;app_mem
           shr  edx,1
           sub  edx,0x10
           mov  [ebx+0x0C], edx                ;app_esp
           mov  ecx,[APP_HEADER_00.i_param]
           mov  [ebx], ecx                     ;app_cmdline
           mov  [ebx+4], dword 0               ;app_path
           mov  edx, [APP_HEADER_00.i_end]
           mov  [ebx+0x14], edx
           ret
 
 .check_01_header:
 
           cmp  [eax+6],word '01'
           jne  .fail
 
           mov  ecx,[APP_HEADER_01.start]
           mov  [ebx+0x08], ecx                ;app_eip
           mov  edx,[APP_HEADER_01.mem_size]
 
; \begin{diamond}[20.08.2006]
; sanity check (functions 19,58 load app_i_end bytes and that must
; fit in allocated memory to prevent kernel faults)
           cmp  edx,[APP_HEADER_01.i_end]
           jb   .fail
; \end{diamond}[20.08.2006]
 
           mov  [ebx+0x10], edx                ;app_mem
           mov  ecx,[APP_HEADER_01.stack_top]
           mov  [ebx+0x0C], ecx                ;app_esp
           mov  edx,[APP_HEADER_01.i_param]
           mov  [ebx], edx                     ;app_cmdline
           mov  ecx,[APP_HEADER_01.i_icon]
           mov  [ebx+4], ecx                   ;app_path
           mov  edx, [APP_HEADER_01.i_end]
           mov  [ebx+0x14], edx
           ret
.fail:
           xor eax, eax
           ret
 
align 4
proc get_new_process_place
;input:
;  none
;result:
;  eax=[new_process_place]<>0 - ok
;      0 - failed.
;This function find least empty slot.
;It doesn't increase [TASK_COUNT]!
           mov    eax,CURRENT_TASK
           mov    ebx,[TASK_COUNT]
           inc    ebx
           shl    ebx,5
           add    ebx,eax               ;ebx - address of process information for (last+1) slot
.newprocessplace:
;eax = address of process information for current slot
           cmp    eax,ebx
           jz     .endnewprocessplace   ;empty slot after high boundary
           add    eax,0x20
           cmp    word [eax+0xa],9      ;check process state, 9 means that process slot is empty
           jnz    .newprocessplace
.endnewprocessplace:
           mov    ebx,eax
           sub    eax,CURRENT_TASK
           shr    eax,5                 ;calculate slot index
           cmp    eax,256
           jge    .failed               ;it should be <256
           mov    word [ebx+0xa],9      ;set process state to 9 (for slot after hight boundary)
           ret
.failed:
           xor    eax,eax
           ret
endp
 
align 4
proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword
           locals
             app_pages   dd ?
             img_pages   dd ?
             dir_addr    dd ?
             app_tabs    dd ?
           endl
 
           mov ebx, pg_data.pg_mutex
           call wait_mutex   ;ebx
 
           xor eax, eax
           mov [dir_addr], eax
 
           mov eax, [app_size]
           add eax, 4095
           and eax, NOT(4095)
           mov [app_size], eax
           mov ebx, eax
           shr eax, 12
           mov [app_pages], eax
 
           add ebx, 0x3FFFFF
           and ebx, NOT(0x3FFFFF)
           shr ebx, 22
           mov [app_tabs], ebx
 
           mov ecx, [img_size]
           add ecx, 4095
           and ecx, NOT(4095)
 
           mov [img_size], ecx
           shr ecx, 12
           mov [img_pages], ecx
 
     if GREEDY_KERNEL
           lea eax, [ecx+ebx+2]    ;only image size
     else
           lea eax, [eax+ebx+2]    ;all requested memory
     end if
           cmp eax, [pg_data.pages_free]
           ja .fail
 
           call alloc_page
           test eax, eax
           jz .fail
           mov [dir_addr], eax
           stdcall map_page,[tmp_task_pdir],eax,dword PG_SW
 
           mov edi, [tmp_task_pdir]
           mov ecx, (OS_BASE shr 20)/4
           xor eax, eax
           cld
           rep stosd
 
           mov ecx, (OS_BASE shr 20)/4
           mov esi, sys_pgdir+(OS_BASE shr 20)
           rep movsd
 
           mov eax, [dir_addr]
           or eax, PG_SW
           mov [edi-4096+(page_tabs shr 20)], eax
 
           and eax, -4096
           call set_cr3
 
           mov edx, [app_tabs]
           mov edi, new_app_base
@@:
           call alloc_page
           test eax, eax
           jz .fail
 
           stdcall map_page_table, edi, eax
           add edi, 0x00400000
           dec edx
           jnz @B
 
           mov edi, new_app_base
           shr edi, 10
           add edi, page_tabs
 
           mov ecx, [app_tabs]
           shl ecx, 10
           xor eax, eax
           rep stosd
 
           mov ecx, [img_pages]
           mov ebx, PG_UW
           mov edx, new_app_base
           mov esi, [img_base]
           mov edi, new_app_base
           shr esi, 10
           shr edi, 10
           add esi, page_tabs
           add edi, page_tabs
.remap:
           lodsd
           or eax, ebx      ; force user level r/w access
           stosd
           add edx, 0x1000
           dec [app_pages]
           dec ecx
           jnz .remap
 
           mov ecx, [app_pages]
           test ecx, ecx
           jz .done
 
if GREEDY_KERNEL
           mov eax, 0x02
.reserve:
           stosd
           invlpg [edx]
           add edx, 4096
           dec ecx
           jnz .reserve
else
 
.alloc:
           call alloc_page
           test eax, eax
           jz .fail
 
           stdcall map_page,edx,eax,dword PG_UW
           add edx, 0x1000
           dec [app_pages]
           jnz .alloc
end if
 
.done:
           stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP
 
           dec [pg_data.pg_mutex]
           mov eax, [dir_addr]
           ret
.fail:
           dec [pg_data.pg_mutex]
           cmp [dir_addr], 0
           je @f
           stdcall destroy_app_space, [dir_addr]
@@:
           xor eax, eax
           ret
endp
 
align 4
set_cr3:
 
           mov ebx, [current_slot]
           mov [ebx+APPDATA.dir_table], eax
           mov cr3, eax
           ret
 
align 4
proc destroy_page_table stdcall, pg_tab:dword
 
           push esi
 
           mov esi, [pg_tab]
           mov ecx, 1024
.free:
           mov eax, [esi]
           test eax, 1
           jz .next
           call free_page
.next:
           add esi, 4
           dec ecx
           jnz .free
           pop esi
           ret
endp
 
align 4
proc destroy_app_space stdcall, pg_dir:dword
 
           mov ebx, pg_data.pg_mutex
           call wait_mutex   ;ebx
 
           xor   edx,edx
           mov   eax,0x2
           mov ebx, [pg_dir]
.loop:
;eax = current slot of process
           mov   ecx,eax
           shl   ecx,5
           cmp   byte [CURRENT_TASK+ecx+0xa],9  ;if process running?
           jz    @f                              ;skip empty slots
           shl   ecx,3
           cmp   [SLOT_BASE+ecx+0xB8],ebx       ;compare page directory addresses
           jnz   @f
           inc   edx                            ;thread found
@@:
           inc   eax
           cmp   eax,[TASK_COUNT]               ;exit loop if we look through all processes
           jle   .loop
 
;edx = number of threads
;our process is zombi so it isn't counted
           cmp   edx,1
           jg    .exit
;if there isn't threads then clear memory.
 
           mov eax, [pg_dir]
           and eax, not 0xFFF
           stdcall map_page,[tmp_task_pdir],eax,dword PG_SW
           mov esi, [tmp_task_pdir]
           mov edi, (OS_BASE shr 20)/4
.destroy:
           mov eax, [esi]
           test eax, 1
           jz .next
           and eax, not 0xFFF
           stdcall map_page,[tmp_task_ptab],eax,dword PG_SW
           stdcall destroy_page_table, [tmp_task_ptab]
           mov eax, [esi]
           call free_page
.next:
           add esi, 4
           dec edi
           jnz .destroy
 
           mov eax, [pg_dir]
           call free_page
.exit:
           stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP
           stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP
           dec [pg_data.pg_mutex]
           ret
endp
 
pid_to_slot:
;Input:
;  eax - pid of process
;Output:
;  eax - slot of process or 0 if process don't exists
;Search process by PID.
    push   ebx
    push   ecx
    mov    ebx,[TASK_COUNT]
    shl    ebx,5
    mov    ecx,2*32
 
.loop:
;ecx=offset of current process info entry
;ebx=maximum permitted offset
    cmp    byte [CURRENT_TASK+ecx+0xa],9
    jz     .endloop              ;skip empty slots
    cmp    [CURRENT_TASK+ecx+0x4],eax ;check PID
    jz     .pid_found
.endloop:
    add    ecx,32
    cmp    ecx,ebx
    jle    .loop
 
    pop    ecx
    pop    ebx
    xor    eax,eax
    ret
 
.pid_found:
    shr    ecx,5
    mov    eax,ecx               ;convert offset to index of slot
    pop    ecx
    pop    ebx
    ret
 
check_region:
;input:
;  ebx - start of buffer
;  ecx - size of buffer
;result:
;  eax = 1 region lays in app memory
;  eax = 0 region don't lays in app memory
     mov  eax,[CURRENT_TASK]
     jmp  check_process_region
;-----------------------------------------------------------------------------
check_process_region:
;input:
;  eax - slot
;  ebx - start of buffer
;  ecx - size of buffer
;result:
;  eax = 1 region lays in app memory
;  eax = 0 region don't lays in app memory
 
     test ecx,ecx
     jle  .ok
     shl  eax,5
     cmp  word [CURRENT_TASK+eax+0xa],0
     jnz  .failed
     shl  eax,3
     mov  eax,[SLOT_BASE+eax+0xb8]
     test eax,eax
     jz   .failed
 
     mov  eax,1
     ret
 
 
;    call MEM_Get_Linear_Address
;    push ebx
;    push ecx
;    push edx
;    mov  edx,ebx
;    and  edx,not (4096-1)
;    sub  ebx,edx
;    add  ecx,ebx
;    mov  ebx,edx
;    add  ecx,(4096-1)
;    and  ecx,not (4096-1)
;.loop:
;;eax - linear address of page directory
;;ebx - current page
;;ecx - current size
;    mov  edx,ebx
;    shr  edx,22
;    mov  edx,[eax+4*edx]
;    and  edx,not (4096-1)
;    test edx,edx
;    jz   .failed1
;    push eax
;    mov  eax,edx
;    call MEM_Get_Linear_Address
;    mov  edx,ebx
;    shr  edx,12
;    and  edx,(1024-1)
;    mov  eax,[eax+4*edx]
;    and  eax,not (4096-1)
;    test eax,eax
;    pop  eax
;    jz   .failed1
;    add  ebx,4096
;    sub  ecx,4096
;    jg   .loop
;    pop  edx
;    pop  ecx
;    pop  ebx
.ok:
    mov  eax,1
    ret
;
;.failed1:
;    pop  edx
;    pop  ecx
;    pop  ebx
.failed:
    xor  eax,eax
    ret
 
align 4
proc read_process_memory
;Input:
;  eax - process slot
;  ebx - buffer address
;  ecx - buffer size
;  edx - start address in other process
;Output:
;  eax - number of bytes read.
           locals
             slot       dd ?
             buff       dd ?
             r_count    dd ?
             offset     dd ?
             tmp_r_cnt  dd ?
           endl
 
           mov [slot], eax
           mov [buff], ebx
           mov [r_count], ecx
           mov [tmp_r_cnt], ecx
           mov [offset], edx
 
           pushad
.read_mem:
           mov edx, [offset]
           mov ebx, [tmp_r_cnt]
 
           mov ecx, 0x400000
           and edx, 0x3FFFFF
           sub ecx, edx
           cmp ecx, ebx
           jbe @f
           mov ecx, ebx
@@:
           cmp ecx, 0x8000
           jna @F
           mov ecx, 0x8000
@@:
           mov eax, [slot]
           shl  eax,8
           mov ebx, [offset]
     ;      add ebx, new_app_base
           push ecx
           stdcall map_memEx, [proc_mem_map],\
                              [SLOT_BASE+eax+0xB8],\
                              ebx, ecx
           pop ecx
 
           mov esi, [offset]
           and esi, 0xfff
           add esi, [proc_mem_map]
           mov edi, [buff]
           mov edx, ecx
           rep movsb
 
           add [offset], edx
           sub [tmp_r_cnt], edx
           jnz .read_mem
 
           popad
           mov eax, [r_count]
           ret
endp
 
align 4
proc write_process_memory
;Input:
;  eax - process slot
;  ebx - buffer address
;  ecx - buffer size
;  edx - start address in other process
;Output:
;  eax - number of bytes written
 
           locals
             slot       dd ?
             buff       dd ?
             w_count    dd ?
             offset     dd ?
             tmp_w_cnt  dd ?
           endl
 
           mov [slot], eax
           mov [buff], ebx
           mov [w_count], ecx
           mov [tmp_w_cnt], ecx
           mov [offset], edx
 
           pushad
.read_mem:
           mov edx, [offset]
           mov ebx, [tmp_w_cnt]
 
           mov ecx, 0x400000
           and edx, 0x3FFFFF
           sub ecx, edx
           cmp ecx, ebx
           jbe @f
           mov ecx, ebx
@@:
           cmp ecx, 0x8000
           jna @F
           mov ecx, 0x8000
@@:
           mov eax, [slot]
           shl  eax,8
           mov ebx, [offset]
      ;     add ebx, new_app_base
           push ecx
           stdcall map_memEx, [proc_mem_map],\
                              [SLOT_BASE+eax+0xB8],\
                              ebx, ecx
           pop ecx
 
           mov edi, [offset]
           and edi, 0xfff
           add edi, [proc_mem_map]
           mov esi, [buff]
           mov edx, ecx
           rep movsb
 
           add [offset], edx
           sub [tmp_w_cnt], edx
           jnz .read_mem
 
           popad
           mov eax, [w_count]
           ret
endp
 
align 4
proc new_sys_threads
           locals
             slot          dd ?
             app_cmdline   dd ? ;0x00
             app_path      dd ? ;0x04
             app_eip       dd ? ;0x08
             app_esp       dd ? ;0x0C
             app_mem       dd ? ;0x10
           endl
 
           cmp eax,1
           jne .failed                  ;other subfunctions
 
           xor  eax,eax
           mov [app_cmdline], eax
           mov [app_path], eax
           mov [app_eip], ebx
           mov [app_esp], ecx
 
           ;mov    esi,new_process_loading
           ;call   sys_msg_board_str
           DEBUGF 1,"%s",new_process_loading
.wait_lock:
           cmp [application_table_status],0
           je .get_lock
           call   change_task
           jmp .wait_lock
 
.get_lock:
           mov eax, 1
           xchg eax, [application_table_status]
           cmp eax, 0
           jne .wait_lock
 
           call   set_application_table_status
 
           call get_new_process_place
           test eax, eax
           jz .failed
 
           mov [slot], eax
 
           mov    esi,[current_slot]
           mov    ebx,esi             ;ebx=esi - pointer to extended information about current thread
 
           mov    edi, eax
           shl    edi,8
           add    edi,SLOT_BASE
           mov    edx,edi             ;edx=edi - pointer to extended infomation about new thread
           mov    ecx,256/4
           xor eax, eax
           cld
           rep    stosd               ;clean extended information about new thread
           mov    esi,ebx
           mov    edi,edx
           mov    ecx,11
           rep    movsb               ;copy process name
 
           mov eax,[ebx+APPDATA.heap_base]
           mov [edx+APPDATA.heap_base], eax
 
           mov ecx,[ebx+APPDATA.heap_top]
           mov [edx+APPDATA.heap_top], ecx
 
           mov eax,[ebx+APPDATA.mem_size]
           mov [edx+APPDATA.mem_size], eax
 
           mov ecx,[ebx+APPDATA.dir_table]
           mov [edx+APPDATA.dir_table],ecx      ;copy page directory
 
           lea eax, [app_cmdline]
           stdcall set_app_params ,[slot],eax,dword 0,\
                                         dword 0,dword 0
 
           ;mov    esi,new_process_running
           ;call   sys_msg_board_str     ;output information about succefull startup
           DEBUGF 1,"%s",new_process_running
 
           mov    [application_table_status],0 ;unlock application_table_status mutex
           mov    eax,[process_number]  ;set result
           ret
.failed:
           mov    [application_table_status],0
           mov    eax,-1
           ret
endp
 
; param
;  ebx=mutex
 
align 4
wait_mutex:
           push eax
           push ebx
.do_wait:
           cmp dword [ebx],0
           je .get_lock
           call change_task
           jmp .do_wait
.get_lock:
           mov eax, 1
           xchg eax, [ebx]
           test eax, eax
           jnz .do_wait
           pop ebx
           pop eax
           ret
 
EFL_IF      equ 0x0200
EFL_IOPL1   equ 0x1000
EFL_IOPL2   equ 0x2000
EFL_IOPL3   equ 0x3000
 
 
align 4
proc set_app_params stdcall,slot:dword, params:dword,\
                        cmd_line:dword, app_path:dword, flags:dword
 
           locals
             pl0_stack dd ?
           endl
 
           stdcall kernel_alloc, RING0_STACK_SIZE+512
           mov [pl0_stack], eax
 
           lea edi, [eax+RING0_STACK_SIZE]
 
           mov eax, [slot]
           mov ebx, eax
 
           shl eax, 8
           mov [eax+SLOT_BASE+APPDATA.fpu_state], edi
           mov [eax+SLOT_BASE+APPDATA.fpu_handler], 0
           mov [eax+SLOT_BASE+APPDATA.sse_handler], 0
 
;set default io permission map
           mov [eax+SLOT_BASE+APPDATA.io_map],\
                  (tss._io_map_0-OS_BASE+PG_MAP)
           mov [eax+SLOT_BASE+APPDATA.io_map+4],\
                  (tss._io_map_1-OS_BASE+PG_MAP)
 
           mov esi, fpu_data
           mov ecx, 512/4
           rep movsd
 
           cmp    ebx,[TASK_COUNT]
           jle    .noinc
           inc    dword [TASK_COUNT]       ;update number of processes
.noinc:
           shl ebx,8
           lea edx, [ebx+SLOT_BASE+APP_EV_OFFSET]
           mov [SLOT_BASE+APPDATA.fd_ev+ebx],edx
           mov [SLOT_BASE+APPDATA.bk_ev+ebx],edx
 
           add edx, APP_OBJ_OFFSET-APP_EV_OFFSET
           mov [SLOT_BASE+APPDATA.fd_obj+ebx],edx
           mov [SLOT_BASE+APPDATA.bk_obj+ebx],edx
 
           mov ecx, [def_cursor]
           mov [SLOT_BASE+APPDATA.cursor+ebx],ecx
           mov eax, [pl0_stack]
           mov [SLOT_BASE+APPDATA.pl0_stack+ebx],eax
 
           shr ebx,3
           mov eax, new_app_base
           mov dword [CURRENT_TASK+ebx+0x10],eax
 
.add_command_line:
           mov edx,[params]
           mov edx,[edx]           ;app_cmdline
           test edx, [cmd_line]    ;check both src & dst
           jz @F                   ;application don't need parameters
 
           mov     eax, edx
           add     eax, 256
           jc      @f
 
           cmp     eax, [SLOT_BASE+APPDATA.mem_size+ebx*8]
           ja      @f
 
           stdcall strncpy, edx, [cmd_line], 256
@@:
           mov edx,[params]
           mov edx, [edx+4]        ;app_path
           test edx,edx
           jz @F                   ;application don't need path of file
           mov     eax, edx
           add     eax, 1024
           jc      @f
           cmp     eax, [SLOT_BASE+APPDATA.mem_size+ebx*8]
           ja      @f
           stdcall strncpy, edx, [app_path], 1024
@@:
           mov    ebx,[slot]
           mov    eax,ebx
           shl    ebx,5
           lea    ecx,[draw_data+ebx]  ;ecx - pointer to draw data
 
; set window state to 'normal' (non-minimized/maximized/rolled-up) state
           mov     [ebx+window_data+WDATA.fl_wstate], WSTATE_NORMAL
           mov     [ebx+window_data+WDATA.fl_redraw], 1
           add    ebx,CURRENT_TASK            ;ebx - pointer to information about process
           mov    [ebx+TASKDATA.wnd_number],al;set window number on screen = process slot
 
           mov    [ebx+TASKDATA.event_mask],dword 1+2+4 ;set default event flags (see 40 function)
 
           inc    dword [process_number]
           mov    eax,[process_number]
           mov    [ebx+4],eax           ;set PID
 
;set draw data to full screen
 
           mov    [ecx+0],dword 0
           mov    [ecx+4],dword 0
           mov    eax,[ScreenWidth]
           mov    [ecx+8],eax
           mov    eax,[ScreenHeight]
           mov    [ecx+12],eax
 
           mov ebx, [pl0_stack]
           mov esi,[params]
           lea ecx, [ebx+REG_EIP]
           xor eax, eax
 
           mov [ebx+REG_RET], dword irq0.return
           mov [ebx+REG_EDI], eax
           mov [ebx+REG_ESI], eax
           mov [ebx+REG_EBP], eax
           mov [ebx+REG_ESP], ecx   ;ebx+REG_EIP
           mov [ebx+REG_EBX], eax
           mov [ebx+REG_EDX], eax
           mov [ebx+REG_ECX], eax
           mov [ebx+REG_EAX], eax
 
           mov eax, [esi+0x08]       ;app_eip
           mov [ebx+REG_EIP],  eax   ;app_entry
           mov [ebx+REG_CS], dword app_code
           mov [ebx+REG_EFLAGS], dword EFL_IOPL1+EFL_IF
 
           mov eax, [esi+0x0C]       ;app_esp
           mov [ebx+REG_APP_ESP], eax    ;app_stack
           mov [ebx+REG_SS], dword app_data
 
           lea ecx, [ebx+REG_RET]
           mov ebx, [slot]
           shl ebx, 8
           mov [ebx+SLOT_BASE+APPDATA.saved_esp], ecx
 
;flush keyboard and buttons queue
           mov    [KEY_COUNT],byte 0
           mov    [BTN_COUNT],byte 0
 
           mov    edi,[slot]
           shl    edi,5
           add    edi,window_data
           mov    ebx,[slot]
           movzx  esi,word [WIN_STACK+ebx*2]
           lea    esi,[WIN_POS+esi*2]
           call   windowactivate        ;gui initialization
 
           mov    ebx,[slot]
           shl    ebx,5
           mov    [CURRENT_TASK+ebx+0xa],byte 0 ;set process state - running
; set if debuggee
           mov eax, [flags]
           test byte [flags], 1
           jz   .no_debug
           mov  [CURRENT_TASK+ebx+0xa],byte 1 ;set process state - suspended
           mov  eax,[CURRENT_TASK]
           mov  [SLOT_BASE+ebx*8+0xac],eax ;set debugger PID - current
.no_debug:
           ;mov    esi,new_process_running
           ;call   sys_msg_board_str     ;output information about succefull startup
           DEBUGF 1,"%s",new_process_running
           ret
endp
 
include "debug.inc"
>

Rev 506	Rev 519
1	$Revision: 506 $	1	$Revision: 519 $
2	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	2	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3	;; ;;	3	;; ;;
4	;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;	4	;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
5	;; Distributed under terms of the GNU General Public License ;;	5	;; Distributed under terms of the GNU General Public License ;;
6	;; ;;	6	;; ;;
7	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	7	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
8		8
9	GREEDY_KERNEL equ 0	9	GREEDY_KERNEL equ 0
10		10
11	struc APP_HEADER_00	11	struc APP_HEADER_00
12	{ .banner dq ?	12	{ .banner dq ?
13	.version dd ? ;+8	13	.version dd ? ;+8
14	.start dd ? ;+12	14	.start dd ? ;+12
15	.i_end dd ? ;+16	15	.i_end dd ? ;+16
16	.mem_size dd ? ;+20	16	.mem_size dd ? ;+20
17	.i_param dd ? ;+24	17	.i_param dd ? ;+24
18	}	18	}
19		19
20	struc APP_HEADER_01	20	struc APP_HEADER_01
21	{ .banner dq ?	21	{ .banner dq ?
22	.version dd ? ;+8	22	.version dd ? ;+8
23	.start dd ? ;+12	23	.start dd ? ;+12
24	.i_end dd ? ;+16	24	.i_end dd ? ;+16
25	.mem_size dd ? ;+20	25	.mem_size dd ? ;+20
26	.stack_top dd ? ;+24	26	.stack_top dd ? ;+24
27	.i_param dd ? ;+28	27	.i_param dd ? ;+28
28	.i_icon dd ? ;+32	28	.i_icon dd ? ;+32
29	}	29	}
30		30
31		31
32	struc APP_PARAMS	32	struc APP_PARAMS
33	{ .app_cmdline ;0x00	33	{ .app_cmdline ;0x00
34	.app_path ;0x04	34	.app_path ;0x04
35	.app_eip ;0x08	35	.app_eip ;0x08
36	.app_esp ;0x0C	36	.app_esp ;0x0C
37	.app_mem ;0x10	37	.app_mem ;0x10
38	}	38	}
39		39
40	macro _clear_ op	40	macro _clear_ op
41	{ mov ecx, op/4	41	{ mov ecx, op/4
42	xor eax, eax	42	xor eax, eax
43	cld	43	cld
44	rep stosd	44	rep stosd
45	}	45	}
46		46
47		47
48	align 4	48	align 4
49	proc fs_execute	49	proc fs_execute
50		50
51	;fn_read:dword, file_size:dword, cluster:dword	51	;fn_read:dword, file_size:dword, cluster:dword
52		52
53	; ebx - cmdline	53	; ebx - cmdline
54	; edx - flags	54	; edx - flags
55	; ebp - full filename	55	; ebp - full filename
56	; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it	56	; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it
57		57
58	locals	58	locals
59	cmdline rd 64 ;256/4	59	cmdline rd 64 ;256/4
60	filename rd 256 ;1024/4	60	filename rd 256 ;1024/4
61	flags dd ?	61	flags dd ?
62		62
63	save_cr3 dd ?	63	save_cr3 dd ?
64	slot dd ?	64	slot dd ?
65	slot_base dd ?	65	slot_base dd ?
66	file_base dd ?	66	file_base dd ?
67	file_size dd ?	67	file_size dd ?
68	;app header data	68	;app header data
69	hdr_cmdline dd ? ;0x00	69	hdr_cmdline dd ? ;0x00
70	hdr_path dd ? ;0x04	70	hdr_path dd ? ;0x04
71	hdr_eip dd ? ;0x08	71	hdr_eip dd ? ;0x08
72	hdr_esp dd ? ;0x0C	72	hdr_esp dd ? ;0x0C
73	hdr_mem dd ? ;0x10	73	hdr_mem dd ? ;0x10
74	hdr_i_end dd ? ;0x14	74	hdr_i_end dd ? ;0x14
75	endl	75	endl
76		76
77	pushad	77	pushad
78		-
79	mov [cmdline], ebx	78
80	mov [flags], edx	79	mov [flags], edx
81		80
82	; [ebp] pointer to filename	81	; [ebp] pointer to filename
83		82
84	lea eax, [filename]	83	lea eax, [filename]
85	mov dword [eax+1020],0 ;force terminate	84	mov dword [eax+1020],0 ;force terminate
86	;string	85	;string
87	stdcall k_strncpy, eax, [ebp], 1023	86	stdcall strncpy, eax, [ebp], 1023
-		87
-		88	mov [cmdline], ebx
-		89	test ebx, ebx
-		90	jz @F
88		91
89	lea eax, [cmdline]	92	lea eax, [cmdline]
90	mov dword [eax+252], 0	93	mov dword [eax+252], 0
91	stdcall k_strncpy, eax, [cmdline], 255	94	stdcall strncpy, eax, ebx, 255
92		95	@@:
93	lea eax, [filename]	96	lea eax, [filename]
94	stdcall load_file, eax	97	stdcall load_file, eax
95	mov ecx, -ERROR_FILE_NOT_FOUND	98	mov ecx, -ERROR_FILE_NOT_FOUND
96	test eax, eax	99	test eax, eax
97	jz .err_file	100	jz .err_file
98		101
99	mov [file_base], eax	102	mov [file_base], eax
100	mov [file_size], ebx	103	mov [file_size], ebx
101		104
102	lea ebx, [hdr_cmdline]	105	lea ebx, [hdr_cmdline]
103	call test_app_header	106	call test_app_header
104	mov ecx, -0x1F	107	mov ecx, -0x1F
105	test eax, eax	108	test eax, eax
106	jz .err_hdr	109	jz .err_hdr
107		110
108	;mov esi, new_process_loading	111	;mov esi, new_process_loading
109	;call sys_msg_board_str ; write message to message board	112	;call sys_msg_board_str ; write message to message board
110	DEBUGF 1,"%s",new_process_loading	113	DEBUGF 1,"%s",new_process_loading
111		114
112	.wait_lock:	115	.wait_lock:
113	cmp [application_table_status],0	116	cmp [application_table_status],0
114	je .get_lock	117	je .get_lock
115	call change_task	118	call change_task
116	jmp .wait_lock	119	jmp .wait_lock
117		120
118	.get_lock:	121	.get_lock:
119	mov eax, 1	122	mov eax, 1
120	xchg eax, [application_table_status]	123	xchg eax, [application_table_status]
121	cmp eax, 0	124	cmp eax, 0
122	jne .wait_lock	125	jne .wait_lock
123		126
124	call set_application_table_status	127	call set_application_table_status
125		128
126	call get_new_process_place	129	call get_new_process_place
127	test eax, eax	130	test eax, eax
128	mov ecx, -0x20 ; too many processes	131	mov ecx, -0x20 ; too many processes
129	jz .err	132	jz .err
130		133
131	mov [slot], eax	134	mov [slot], eax
132	shl eax, 8	135	shl eax, 8
133	add eax, SLOT_BASE	136	add eax, SLOT_BASE
134	mov [slot_base], eax	137	mov [slot_base], eax
135	mov edi, eax	138	mov edi, eax
136	_clear_ 256 ;clean extended information about process	139	_clear_ 256 ;clean extended information about process
137		140
138	; write application name	141	; write application name
139	lea edi, [filename]	142	lea eax, [filename]
140	mov al, '/'	-
141	call k_strrchr ; now eax points to name without path	143	stdcall strrchr, eax, '/' ; now eax points to name without path
142		144
143	lea esi, [eax+1]	145	lea esi, [eax+1]
144	test eax, eax	146	test eax, eax
145	jnz @F	147	jnz @F
146	lea esi, [filename]	148	lea esi, [filename]
147	@@:	149	@@:
148	mov ecx, 8 ; 8 chars for name	150	mov ecx, 8 ; 8 chars for name
149	mov edi, [slot_base]	151	mov edi, [slot_base]
150	.copy_process_name_loop:	152	.copy_process_name_loop:
151	lodsb	153	lodsb
152	cmp al, '.'	154	cmp al, '.'
153	jz .copy_process_name_done	155	jz .copy_process_name_done
154	test al, al	156	test al, al
155	jz .copy_process_name_done	157	jz .copy_process_name_done
156	stosb	158	stosb
157	loop .copy_process_name_loop	159	loop .copy_process_name_loop
158	.copy_process_name_done:	160	.copy_process_name_done:
159		161
160	mov ebx, cr3	162	mov ebx, cr3
161	mov [save_cr3], ebx	163	mov [save_cr3], ebx
162		164
163	stdcall create_app_space,[hdr_mem],[file_base],[file_size]	165	stdcall create_app_space,[hdr_mem],[file_base],[file_size]
164	mov ecx, -30 ; no memory	166	mov ecx, -30 ; no memory
165	test eax, eax	167	test eax, eax
166	jz .failed	168	jz .failed
167		169
168	mov ebx,[slot_base]	170	mov ebx,[slot_base]
169	mov [ebx+APPDATA.dir_table],eax	171	mov [ebx+APPDATA.dir_table],eax
170	mov eax,[hdr_mem]	172	mov eax,[hdr_mem]
171	mov [ebx+APPDATA.mem_size],eax	173	mov [ebx+APPDATA.mem_size],eax
172		174
173	if GREEDY_KERNEL	175	if GREEDY_KERNEL
174	else	176	else
175	mov ecx, [hdr_mem]	177	mov ecx, [hdr_mem]
176	mov edi, [file_size]	178	mov edi, [file_size]
177	add edi, 4095	179	add edi, 4095
178	and edi, not 4095	180	and edi, not 4095
179	sub ecx, edi	181	sub ecx, edi
180	jna @F	182	jna @F
181		183
182	xor eax, eax	184	xor eax, eax
183	; add edi, new_app_base	185	; add edi, new_app_base
184	cld	186	cld
185	rep stosb	187	rep stosb
186	@@:	188	@@:
187	end if	189	end if
188		190
189	; release only virtual space, not phisical memory	191	; release only virtual space, not phisical memory
190		192
191	stdcall free_kernel_space, [file_base]	193	stdcall free_kernel_space, [file_base]
192	lea eax, [hdr_cmdline]	194	lea eax, [hdr_cmdline]
193	lea ebx, [cmdline]	195	lea ebx, [cmdline]
194	lea ecx, [filename]	196	lea ecx, [filename]
195	stdcall set_app_params ,[slot],eax,ebx,ecx,[flags]	197	stdcall set_app_params ,[slot],eax,ebx,ecx,[flags]
196		198
197	mov eax, [save_cr3]	199	mov eax, [save_cr3]
198	call set_cr3	200	call set_cr3
199		201
200	xor ebx, ebx	202	xor ebx, ebx
201	mov [application_table_status],ebx ;unlock application_table_status mutex	203	mov [application_table_status],ebx ;unlock application_table_status mutex
202	mov eax,[process_number] ;set result	204	mov eax,[process_number] ;set result
203	ret	205	ret
204	.failed:	206	.failed:
205	mov eax, [save_cr3]	207	mov eax, [save_cr3]
206	call set_cr3	208	call set_cr3
207	.err:	209	.err:
208	.err_hdr:	210	.err_hdr:
209	stdcall kernel_free,[file_base]	211	stdcall kernel_free,[file_base]
210	.err_file:	212	.err_file:
211	xor eax, eax	213	xor eax, eax
212	mov [application_table_status],eax	214	mov [application_table_status],eax
213	mov eax, ecx	215	mov eax, ecx
214	ret	216	ret
215	endp	217	endp
216		218
217	align 4	219	align 4
218	test_app_header:	220	test_app_header:
219	virtual at eax	221	virtual at eax
220	APP_HEADER_00 APP_HEADER_00	222	APP_HEADER_00 APP_HEADER_00
221	end virtual	223	end virtual
222	virtual at eax	224	virtual at eax
223	APP_HEADER_01 APP_HEADER_01	225	APP_HEADER_01 APP_HEADER_01
224	end virtual	226	end virtual
225		227
226	cmp dword [eax], 'MENU'	228	cmp dword [eax], 'MENU'
227	jne .fail	229	jne .fail
228	cmp word [eax+4],'ET'	230	cmp word [eax+4],'ET'
229	jne .fail	231	jne .fail
230		232
231	cmp [eax+6], word '00'	233	cmp [eax+6], word '00'
232	jne .check_01_header	234	jne .check_01_header
233		235
234	mov ecx,[APP_HEADER_00.start]	236	mov ecx,[APP_HEADER_00.start]
235	mov [ebx+0x08], ecx ;app_eip	237	mov [ebx+0x08], ecx ;app_eip
236	mov edx,[APP_HEADER_00.mem_size]	238	mov edx,[APP_HEADER_00.mem_size]
237	mov [ebx+0x10], edx ;app_mem	239	mov [ebx+0x10], edx ;app_mem
238	shr edx,1	240	shr edx,1
239	sub edx,0x10	241	sub edx,0x10
240	mov [ebx+0x0C], edx ;app_esp	242	mov [ebx+0x0C], edx ;app_esp
241	mov ecx,[APP_HEADER_00.i_param]	243	mov ecx,[APP_HEADER_00.i_param]
242	mov [ebx], ecx ;app_cmdline	244	mov [ebx], ecx ;app_cmdline
243	mov [ebx+4], dword 0 ;app_path	245	mov [ebx+4], dword 0 ;app_path
244	mov edx, [APP_HEADER_00.i_end]	246	mov edx, [APP_HEADER_00.i_end]
245	mov [ebx+0x14], edx	247	mov [ebx+0x14], edx
246	ret	248	ret
247		249
248	.check_01_header:	250	.check_01_header:
249		251
250	cmp [eax+6],word '01'	252	cmp [eax+6],word '01'
251	jne .fail	253	jne .fail
252		254
253	mov ecx,[APP_HEADER_01.start]	255	mov ecx,[APP_HEADER_01.start]
254	mov [ebx+0x08], ecx ;app_eip	256	mov [ebx+0x08], ecx ;app_eip
255	mov edx,[APP_HEADER_01.mem_size]	257	mov edx,[APP_HEADER_01.mem_size]
256		258
257	; \begin{diamond}[20.08.2006]	259	; \begin{diamond}[20.08.2006]
258	; sanity check (functions 19,58 load app_i_end bytes and that must	260	; sanity check (functions 19,58 load app_i_end bytes and that must
259	; fit in allocated memory to prevent kernel faults)	261	; fit in allocated memory to prevent kernel faults)
260	cmp edx,[APP_HEADER_01.i_end]	262	cmp edx,[APP_HEADER_01.i_end]
261	jb .fail	263	jb .fail
262	; \end{diamond}[20.08.2006]	264	; \end{diamond}[20.08.2006]
263		265
264	mov [ebx+0x10], edx ;app_mem	266	mov [ebx+0x10], edx ;app_mem
265	mov ecx,[APP_HEADER_01.stack_top]	267	mov ecx,[APP_HEADER_01.stack_top]
266	mov [ebx+0x0C], ecx ;app_esp	268	mov [ebx+0x0C], ecx ;app_esp
267	mov edx,[APP_HEADER_01.i_param]	269	mov edx,[APP_HEADER_01.i_param]
268	mov [ebx], edx ;app_cmdline	270	mov [ebx], edx ;app_cmdline
269	mov ecx,[APP_HEADER_01.i_icon]	271	mov ecx,[APP_HEADER_01.i_icon]
270	mov [ebx+4], ecx ;app_path	272	mov [ebx+4], ecx ;app_path
271	mov edx, [APP_HEADER_01.i_end]	273	mov edx, [APP_HEADER_01.i_end]
272	mov [ebx+0x14], edx	274	mov [ebx+0x14], edx
273	ret	275	ret
274	.fail:	276	.fail:
275	xor eax, eax	277	xor eax, eax
276	ret	278	ret
277		279
278	align 4	280	align 4
279	proc get_new_process_place	281	proc get_new_process_place
280	;input:	282	;input:
281	; none	283	; none
282	;result:	284	;result:
283	; eax=[new_process_place]<>0 - ok	285	; eax=[new_process_place]<>0 - ok
284	; 0 - failed.	286	; 0 - failed.
285	;This function find least empty slot.	287	;This function find least empty slot.
286	;It doesn't increase [TASK_COUNT]!	288	;It doesn't increase [TASK_COUNT]!
287	mov eax,CURRENT_TASK	289	mov eax,CURRENT_TASK
288	mov ebx,[TASK_COUNT]	290	mov ebx,[TASK_COUNT]
289	inc ebx	291	inc ebx
290	shl ebx,5	292	shl ebx,5
291	add ebx,eax ;ebx - address of process information for (last+1) slot	293	add ebx,eax ;ebx - address of process information for (last+1) slot
292	.newprocessplace:	294	.newprocessplace:
293	;eax = address of process information for current slot	295	;eax = address of process information for current slot
294	cmp eax,ebx	296	cmp eax,ebx
295	jz .endnewprocessplace ;empty slot after high boundary	297	jz .endnewprocessplace ;empty slot after high boundary
296	add eax,0x20	298	add eax,0x20
297	cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty	299	cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty
298	jnz .newprocessplace	300	jnz .newprocessplace
299	.endnewprocessplace:	301	.endnewprocessplace:
300	mov ebx,eax	302	mov ebx,eax
301	sub eax,CURRENT_TASK	303	sub eax,CURRENT_TASK
302	shr eax,5 ;calculate slot index	304	shr eax,5 ;calculate slot index
303	cmp eax,256	305	cmp eax,256
304	jge .failed ;it should be <256	306	jge .failed ;it should be <256
305	mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary)	307	mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary)
306	ret	308	ret
307	.failed:	309	.failed:
308	xor eax,eax	310	xor eax,eax
309	ret	311	ret
310	endp	312	endp
311		313
312	align 4	314	align 4
313	proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword	315	proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword
314	locals	316	locals
315	app_pages dd ?	317	app_pages dd ?
316	img_pages dd ?	318	img_pages dd ?
317	dir_addr dd ?	319	dir_addr dd ?
318	app_tabs dd ?	320	app_tabs dd ?
319	endl	321	endl
320		322
321	mov ebx, pg_data.pg_mutex	323	mov ebx, pg_data.pg_mutex
322	call wait_mutex ;ebx	324	call wait_mutex ;ebx
323		325
324	xor eax, eax	326	xor eax, eax
325	mov [dir_addr], eax	327	mov [dir_addr], eax
326		328
327	mov eax, [app_size]	329	mov eax, [app_size]
328	add eax, 4095	330	add eax, 4095
329	and eax, NOT(4095)	331	and eax, NOT(4095)
330	mov [app_size], eax	332	mov [app_size], eax
331	mov ebx, eax	333	mov ebx, eax
332	shr eax, 12	334	shr eax, 12
333	mov [app_pages], eax	335	mov [app_pages], eax
334		336
335	add ebx, 0x3FFFFF	337	add ebx, 0x3FFFFF
336	and ebx, NOT(0x3FFFFF)	338	and ebx, NOT(0x3FFFFF)
337	shr ebx, 22	339	shr ebx, 22
338	mov [app_tabs], ebx	340	mov [app_tabs], ebx
339		341
340	mov ecx, [img_size]	342	mov ecx, [img_size]
341	add ecx, 4095	343	add ecx, 4095
342	and ecx, NOT(4095)	344	and ecx, NOT(4095)
343		345
344	mov [img_size], ecx	346	mov [img_size], ecx
345	shr ecx, 12	347	shr ecx, 12
346	mov [img_pages], ecx	348	mov [img_pages], ecx
347		349
348	if GREEDY_KERNEL	350	if GREEDY_KERNEL
349	lea eax, [ecx+ebx+2] ;only image size	351	lea eax, [ecx+ebx+2] ;only image size
350	else	352	else
351	lea eax, [eax+ebx+2] ;all requested memory	353	lea eax, [eax+ebx+2] ;all requested memory
352	end if	354	end if
353	cmp eax, [pg_data.pages_free]	355	cmp eax, [pg_data.pages_free]
354	ja .fail	356	ja .fail
355		357
356	call alloc_page	358	call alloc_page
357	test eax, eax	359	test eax, eax
358	jz .fail	360	jz .fail
359	mov [dir_addr], eax	361	mov [dir_addr], eax
360	stdcall map_page,[tmp_task_pdir],eax,dword PG_SW	362	stdcall map_page,[tmp_task_pdir],eax,dword PG_SW
361		363
362	mov edi, [tmp_task_pdir]	364	mov edi, [tmp_task_pdir]
363	mov ecx, (OS_BASE shr 20)/4	365	mov ecx, (OS_BASE shr 20)/4
364	xor eax, eax	366	xor eax, eax
365	cld	367	cld
366	rep stosd	368	rep stosd
367		369
368	mov ecx, (OS_BASE shr 20)/4	370	mov ecx, (OS_BASE shr 20)/4
369	mov esi, sys_pgdir+(OS_BASE shr 20)	371	mov esi, sys_pgdir+(OS_BASE shr 20)
370	rep movsd	372	rep movsd
371		373
372	mov eax, [dir_addr]	374	mov eax, [dir_addr]
373	or eax, PG_SW	375	or eax, PG_SW
374	mov [edi-4096+(page_tabs shr 20)], eax	376	mov [edi-4096+(page_tabs shr 20)], eax
375		377
376	and eax, -4096	378	and eax, -4096
377	call set_cr3	379	call set_cr3
378		380
379	mov edx, [app_tabs]	381	mov edx, [app_tabs]
380	mov edi, new_app_base	382	mov edi, new_app_base
381	@@:	383	@@:
382	call alloc_page	384	call alloc_page
383	test eax, eax	385	test eax, eax
384	jz .fail	386	jz .fail
385		387
386	stdcall map_page_table, edi, eax	388	stdcall map_page_table, edi, eax
387	add edi, 0x00400000	389	add edi, 0x00400000
388	dec edx	390	dec edx
389	jnz @B	391	jnz @B
390		392
391	mov edi, new_app_base	393	mov edi, new_app_base
392	shr edi, 10	394	shr edi, 10
393	add edi, page_tabs	395	add edi, page_tabs
394		396
395	mov ecx, [app_tabs]	397	mov ecx, [app_tabs]
396	shl ecx, 10	398	shl ecx, 10
397	xor eax, eax	399	xor eax, eax
398	rep stosd	400	rep stosd
399		401
400	mov ecx, [img_pages]	402	mov ecx, [img_pages]
401	mov ebx, PG_UW	403	mov ebx, PG_UW
402	mov edx, new_app_base	404	mov edx, new_app_base
403	mov esi, [img_base]	405	mov esi, [img_base]
404	mov edi, new_app_base	406	mov edi, new_app_base
405	shr esi, 10	407	shr esi, 10
406	shr edi, 10	408	shr edi, 10
407	add esi, page_tabs	409	add esi, page_tabs
408	add edi, page_tabs	410	add edi, page_tabs
409	.remap:	411	.remap:
410	lodsd	412	lodsd
411	or eax, ebx ; force user level r/w access	413	or eax, ebx ; force user level r/w access
412	stosd	414	stosd
413	add edx, 0x1000	415	add edx, 0x1000
414	dec [app_pages]	416	dec [app_pages]
415	dec ecx	417	dec ecx
416	jnz .remap	418	jnz .remap
417		419
418	mov ecx, [app_pages]	420	mov ecx, [app_pages]
419	test ecx, ecx	421	test ecx, ecx
420	jz .done	422	jz .done
421		423
422	if GREEDY_KERNEL	424	if GREEDY_KERNEL
423	mov eax, 0x02	425	mov eax, 0x02
424	.reserve:	426	.reserve:
425	stosd	427	stosd
426	invlpg [edx]	428	invlpg [edx]
427	add edx, 4096	429	add edx, 4096
428	dec ecx	430	dec ecx
429	jnz .reserve	431	jnz .reserve
430	else	432	else
431		433
432	.alloc:	434	.alloc:
433	call alloc_page	435	call alloc_page
434	test eax, eax	436	test eax, eax
435	jz .fail	437	jz .fail
436		438
437	stdcall map_page,edx,eax,dword PG_UW	439	stdcall map_page,edx,eax,dword PG_UW
438	add edx, 0x1000	440	add edx, 0x1000
439	dec [app_pages]	441	dec [app_pages]
440	jnz .alloc	442	jnz .alloc
441	end if	443	end if
442		444
443	.done:	445	.done:
444	stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP	446	stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP
445		447
446	dec [pg_data.pg_mutex]	448	dec [pg_data.pg_mutex]
447	mov eax, [dir_addr]	449	mov eax, [dir_addr]
448	ret	450	ret
449	.fail:	451	.fail:
450	dec [pg_data.pg_mutex]	452	dec [pg_data.pg_mutex]
451	cmp [dir_addr], 0	453	cmp [dir_addr], 0
452	je @f	454	je @f
453	stdcall destroy_app_space, [dir_addr]	455	stdcall destroy_app_space, [dir_addr]
454	@@:	456	@@:
455	xor eax, eax	457	xor eax, eax
456	ret	458	ret
457	endp	459	endp
458		460
459	align 4	461	align 4
460	set_cr3:	462	set_cr3:
461		463
462	mov ebx, [current_slot]	464	mov ebx, [current_slot]
463	mov [ebx+APPDATA.dir_table], eax	465	mov [ebx+APPDATA.dir_table], eax
464	mov cr3, eax	466	mov cr3, eax
465	ret	467	ret
466		468
467	align 4	469	align 4
468	proc destroy_page_table stdcall, pg_tab:dword	470	proc destroy_page_table stdcall, pg_tab:dword
469		471
470	push esi	472	push esi
471		473
472	mov esi, [pg_tab]	474	mov esi, [pg_tab]
473	mov ecx, 1024	475	mov ecx, 1024
474	.free:	476	.free:
475	mov eax, [esi]	477	mov eax, [esi]
476	test eax, 1	478	test eax, 1
477	jz .next	479	jz .next
478	call free_page	480	call free_page
479	.next:	481	.next:
480	add esi, 4	482	add esi, 4
481	dec ecx	483	dec ecx
482	jnz .free	484	jnz .free
483	pop esi	485	pop esi
484	ret	486	ret
485	endp	487	endp
486		488
487	align 4	489	align 4
488	proc destroy_app_space stdcall, pg_dir:dword	490	proc destroy_app_space stdcall, pg_dir:dword
489		491
490	mov ebx, pg_data.pg_mutex	492	mov ebx, pg_data.pg_mutex
491	call wait_mutex ;ebx	493	call wait_mutex ;ebx
492		494
493	xor edx,edx	495	xor edx,edx
494	mov eax,0x2	496	mov eax,0x2
495	mov ebx, [pg_dir]	497	mov ebx, [pg_dir]
496	.loop:	498	.loop:

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(root)/kernel/trunk/core/taskman.inc – Rev 506 → 519