WebSVN – Kolibri OS – Diff – /kernel/branches/flat_kernel/core/taskman.inc


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 [cmdline], ebx
           mov [flags], edx
 
; [ebp]  pointer to filename
 
           lea eax, [filename]
           mov dword [eax+1020],0              ;force terminate
                                               ;string
           stdcall k_strncpy, eax, [ebp], 1023
 
           lea eax, [cmdline]
           mov dword [eax+252], 0
           stdcall k_strncpy, eax, [cmdline], 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
 
.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 edi, [filename]
           mov al, '/'
           call k_strrchr  ; 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
 
;           mov esi, [CURRENT_TASK]
;           mov ebx, esi
;           shl esi,8
;           mov [SLOT_BASE+esi+0xB8],eax
;           imul   ebx,tss_step
;           add    ebx,tss_data
;           mov [ebx+28], 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
.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 byte [edi], '@'
           inc    edi
           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
 
           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
 
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
 
           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,edx
           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
 
     ;      add edx, new_app_base
           stdcall k_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
    ;       add edx, new_app_base
           stdcall k_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 edi,[slot]
           imul edi,tss_step
           add edi,tss_data
           mov ecx,128/4
           xor eax, eax
           cld
           rep stosd
;Add IO access table - bit array of permitted ports
           not eax
           mov ecx,2048
           rep stosd                 ; access to 4096*8=65536 ports
           sub edi, tss_step
 
;set cr3 register in TSS of application
           mov ecx, [slot]
           shl ecx, 8
           mov eax,[SLOT_BASE+ecx+APPDATA.dir_table]
           mov [edi+TSS._cr3],eax
 
           mov esi,[params]
           mov eax, [esi+0x08]       ;app_eip
           mov [edi+TSS._eip],eax    ;set eip in TSS
           mov eax, [esi+0x0C]       ;app_esp
           mov [edi+TSS._esp],eax    ;set stack in TSS
           mov [edi+TSS._eflags],dword 0x1202
 
           mov [edi+TSS._cs],app_code  ;selector of code segment
           mov [edi+TSS._ss],app_data
           mov [edi+TSS._ds],app_data
           mov [edi+TSS._es],app_data
           mov [edi+TSS._fs],app_data
           mov [edi+TSS._gs],graph_data ;selector of graphic segment
           mov [edi+TSS._io],word 128
           mov [edi+TSS._ss0], os_stack
           mov ebx, [pl0_stack]
           add ebx, RING0_STACK_SIZE
           mov [edi+TSS._esp0],ebx
 
           xor eax, eax
           mov ebx, [pl0_stack]
           lea ecx, [ebx+REG_EIP]
 
           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 [ebx+REG_EFL_2], dword 0x1002
 
           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 0x1202
 
           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
 
           mov ecx, edi    ;ecx - address of application TSS
           mov ebx,[slot]
           shl ebx,3
;set TSS descriptor
           mov [ebx+gdts+tss0+0],word tss_step ;limit (size)
           mov [ebx+gdts+tss0+2],cx  ;part of offset
           shr ecx,16
           mov [ebx+gdts+tss0+4],cl  ;part of offset
           mov [ebx+gdts+tss0+7],ch  ;part of offset
           mov [ebx+gdts+tss0+5],word 01010000b*256+11101001b ;system flags
 
;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
           ret
 
if 0
; set stack frame
 
           xor eax, eax
           lea ecx, [ebx+REG_EIP]
           mov ebx, [pl0_stack]
           mov esi,[params]
 
           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 [ebx+REG_EFL_2], dword 0x1002
 
           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 0x1202
 
           mov eax, [esi+0x0C]       ;app_esp
           mov [ebx+REG_ESP], eax    ;app_stack
           mov [ebx+REG_SS], dword app_data
end if
 
endp
 
include "debug.inc"
>

Rev 420	Rev 427
1	GREEDY_KERNEL equ 0	1	GREEDY_KERNEL equ 0
2		2
3		3
4	struc APP_HEADER_00	4	struc APP_HEADER_00
5	{ .banner dq ?	5	{ .banner dq ?
6	.version dd ? ;+8	6	.version dd ? ;+8
7	.start dd ? ;+12	7	.start dd ? ;+12
8	.i_end dd ? ;+16	8	.i_end dd ? ;+16
9	.mem_size dd ? ;+20	9	.mem_size dd ? ;+20
10	.i_param dd ? ;+24	10	.i_param dd ? ;+24
11	}	11	}
12		12
13	struc APP_HEADER_01	13	struc APP_HEADER_01
14	{ .banner dq ?	14	{ .banner dq ?
15	.version dd ? ;+8	15	.version dd ? ;+8
16	.start dd ? ;+12	16	.start dd ? ;+12
17	.i_end dd ? ;+16	17	.i_end dd ? ;+16
18	.mem_size dd ? ;+20	18	.mem_size dd ? ;+20
19	.stack_top dd ? ;+24	19	.stack_top dd ? ;+24
20	.i_param dd ? ;+28	20	.i_param dd ? ;+28
21	.i_icon dd ? ;+32	21	.i_icon dd ? ;+32
22	}	22	}
23		-
24	struc TSS	-
25	{	-
26	._back rw 2	-
27	._esp0 rd 1	-
28	._ss0 rw 2	-
29	._esp1 rd 1	-
30	._ss1 rw 2	-
31	._esp2 rd 1	-
32	._ss2 rw 2	-
33	._cr3 rd 1	-
34	._eip rd 1	-
35	._eflags rd 1	-
36	._eax rd 1	-
37	._ecx rd 1	-
38	._edx rd 1	-
39	._ebx rd 1	-
40	._esp rd 1	-
41	._ebp rd 1	-
42	._esi rd 1	-
43	._edi rd 1	-
44	._es rw 2	-
45	._cs rw 2	-
46	._ss rw 2	-
47	._ds rw 2	-
48	._fs rw 2	-
49	._gs rw 2	-
50	._ldt rw 2	-
51	._trap rw 1	-
52	._io rw 1	-
53	}	-
54		-
55	virtual at 0	-
56	TSS TSS	-
57	end virtual	23
58		24
59	struc APP_PARAMS	25	struc APP_PARAMS
60	{ .app_cmdline ;0x00	26	{ .app_cmdline ;0x00
61	.app_path ;0x04	27	.app_path ;0x04
62	.app_eip ;0x08	28	.app_eip ;0x08
63	.app_esp ;0x0C	29	.app_esp ;0x0C
64	.app_mem ;0x10	30	.app_mem ;0x10
65	}	31	}
66		32
67	macro _clear_ op	33	macro _clear_ op
68	{ mov ecx, op/4	34	{ mov ecx, op/4
69	xor eax, eax	35	xor eax, eax
70	cld	36	cld
71	rep stosd	37	rep stosd
72	}	38	}
73		39
74		40
75	align 4	41	align 4
76	proc fs_execute	42	proc fs_execute
77		43
78	;fn_read:dword, file_size:dword, cluster:dword	44	;fn_read:dword, file_size:dword, cluster:dword
79		45
80	; ebx - cmdline	46	; ebx - cmdline
81	; edx - flags	47	; edx - flags
82	; ebp - full filename	48	; ebp - full filename
83	; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it	49	; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it
84		50
85	locals	51	locals
86	cmdline rd 64 ;256/4	52	cmdline rd 64 ;256/4
87	filename rd 256 ;1024/4	53	filename rd 256 ;1024/4
88	flags dd ?	54	flags dd ?
89		55
90	save_cr3 dd ?	56	save_cr3 dd ?
91	slot dd ?	57	slot dd ?
92	slot_base dd ?	58	slot_base dd ?
93	file_base dd ?	59	file_base dd ?
94	file_size dd ?	60	file_size dd ?
95	;app header data	61	;app header data
96	hdr_cmdline dd ? ;0x00	62	hdr_cmdline dd ? ;0x00
97	hdr_path dd ? ;0x04	63	hdr_path dd ? ;0x04
98	hdr_eip dd ? ;0x08	64	hdr_eip dd ? ;0x08
99	hdr_esp dd ? ;0x0C	65	hdr_esp dd ? ;0x0C
100	hdr_mem dd ? ;0x10	66	hdr_mem dd ? ;0x10
101	hdr_i_end dd ? ;0x14	67	hdr_i_end dd ? ;0x14
102	endl	68	endl
103		69
104	pushad	70	pushad
105		71
106	mov [cmdline], ebx	72	mov [cmdline], ebx
107	mov [flags], edx	73	mov [flags], edx
108		74
109	; [ebp] pointer to filename	75	; [ebp] pointer to filename
110		76
111	lea eax, [filename]	77	lea eax, [filename]
112	mov dword [eax+1020],0 ;force terminate	78	mov dword [eax+1020],0 ;force terminate
113	;string	79	;string
114	stdcall k_strncpy, eax, [ebp], 1023	80	stdcall k_strncpy, eax, [ebp], 1023
115		81
116	lea eax, [cmdline]	82	lea eax, [cmdline]
117	mov dword [eax+252], 0	83	mov dword [eax+252], 0
118	stdcall k_strncpy, eax, [cmdline], 255	84	stdcall k_strncpy, eax, [cmdline], 255
119		85
120	lea eax, [filename]	86	lea eax, [filename]
121	stdcall load_file, eax	87	stdcall load_file, eax
122	mov ecx, -ERROR_FILE_NOT_FOUND	88	mov ecx, -ERROR_FILE_NOT_FOUND
123	test eax, eax	89	test eax, eax
124	jz .err_file	90	jz .err_file
125		91
126	mov [file_base], eax	92	mov [file_base], eax
127	mov [file_size], ebx	93	mov [file_size], ebx
128		94
129	lea ebx, [hdr_cmdline]	95	lea ebx, [hdr_cmdline]
130	call test_app_header	96	call test_app_header
131	mov ecx, -0x1F	97	mov ecx, -0x1F
132	test eax, eax	98	test eax, eax
133	jz .err_hdr	99	jz .err_hdr
134		100
135	mov esi, new_process_loading	101	mov esi, new_process_loading
136	call sys_msg_board_str ; write message to message board	102	call sys_msg_board_str ; write message to message board
137		103
138	.wait_lock:	104	.wait_lock:
139	cmp [application_table_status],0	105	cmp [application_table_status],0
140	je .get_lock	106	je .get_lock
141	call change_task	107	call change_task
142	jmp .wait_lock	108	jmp .wait_lock
143		109
144	.get_lock:	110	.get_lock:
145	mov eax, 1	111	mov eax, 1
146	xchg eax, [application_table_status]	112	xchg eax, [application_table_status]
147	cmp eax, 0	113	cmp eax, 0
148	jne .wait_lock	114	jne .wait_lock
149		115
150	call set_application_table_status	116	call set_application_table_status
151		117
152	call get_new_process_place	118	call get_new_process_place
153	test eax, eax	119	test eax, eax
154	mov ecx, -0x20 ; too many processes	120	mov ecx, -0x20 ; too many processes
155	jz .err	121	jz .err
156		122
157	mov [slot], eax	123	mov [slot], eax
158	shl eax, 8	124	shl eax, 8
159	add eax, SLOT_BASE	125	add eax, SLOT_BASE
160	mov [slot_base], eax	126	mov [slot_base], eax
161	mov edi, eax	127	mov edi, eax
162	_clear_ 256 ;clean extended information about process	128	_clear_ 256 ;clean extended information about process
163		129
164	; write application name	130	; write application name
165	lea edi, [filename]	131	lea edi, [filename]
166	mov al, '/'	132	mov al, '/'
167	call k_strrchr ; now eax points to name without path	133	call k_strrchr ; now eax points to name without path
168		134
169	lea esi, [eax+1]	135	lea esi, [eax+1]
170	test eax, eax	136	test eax, eax
171	jnz @F	137	jnz @F
172	lea esi, [filename]	138	lea esi, [filename]
173	@@:	139	@@:
174	mov ecx, 8 ; 8 chars for name	140	mov ecx, 8 ; 8 chars for name
175	mov edi, [slot_base]	141	mov edi, [slot_base]
176	.copy_process_name_loop:	142	.copy_process_name_loop:
177	lodsb	143	lodsb
178	cmp al, '.'	144	cmp al, '.'
179	jz .copy_process_name_done	145	jz .copy_process_name_done
180	test al, al	146	test al, al
181	jz .copy_process_name_done	147	jz .copy_process_name_done
182	stosb	148	stosb
183	loop .copy_process_name_loop	149	loop .copy_process_name_loop
184	.copy_process_name_done:	150	.copy_process_name_done:
185		151
186	mov ebx, cr3	152	mov ebx, cr3
187	mov [save_cr3], ebx	153	mov [save_cr3], ebx
188		154
189	stdcall create_app_space,[hdr_mem],[file_base],[file_size]	155	stdcall create_app_space,[hdr_mem],[file_base],[file_size]
190	mov ecx, -30 ; no memory	156	mov ecx, -30 ; no memory
191	test eax, eax	157	test eax, eax
192	jz .failed	158	jz .failed
193		159
194	mov ebx,[slot_base]	160	mov ebx,[slot_base]
195	mov [ebx+APPDATA.dir_table],eax	161	mov [ebx+APPDATA.dir_table],eax
196	mov eax,[hdr_mem]	162	mov eax,[hdr_mem]
197	mov [ebx+APPDATA.mem_size],eax	163	mov [ebx+APPDATA.mem_size],eax
198		164
199	if GREEDY_KERNEL	165	if GREEDY_KERNEL
200	else	166	else
201	mov ecx, [hdr_mem]	167	mov ecx, [hdr_mem]
202	mov edi, [file_size]	168	mov edi, [file_size]
203	add edi, 4095	169	add edi, 4095
204	and edi, not 4095	170	and edi, not 4095
205	sub ecx, edi	171	sub ecx, edi
206	jna @F	172	jna @F
207		173
208	xor eax, eax	174	xor eax, eax
209	; add edi, new_app_base	175	; add edi, new_app_base
210	cld	176	cld
211	rep stosb	177	rep stosb
212	@@:	178	@@:
213	end if	179	end if
214		180
215	; release only virtual space, not phisical memory	181	; release only virtual space, not phisical memory
216		182
217	stdcall free_kernel_space, [file_base]	183	stdcall free_kernel_space, [file_base]
218	lea eax, [hdr_cmdline]	184	lea eax, [hdr_cmdline]
219	lea ebx, [cmdline]	185	lea ebx, [cmdline]
220	lea ecx, [filename]	186	lea ecx, [filename]
221	stdcall set_app_params ,[slot],eax,ebx,ecx,[flags]	187	stdcall set_app_params ,[slot],eax,ebx,ecx,[flags]
222		188
223	mov eax, [save_cr3]	189	mov eax, [save_cr3]
224	call set_cr3	190	call set_cr3
225		191
226	xor ebx, ebx	192	xor ebx, ebx
227	mov [application_table_status],ebx ;unlock application_table_status mutex	193	mov [application_table_status],ebx ;unlock application_table_status mutex
228	mov eax,[process_number] ;set result	194	mov eax,[process_number] ;set result
229	ret	195	ret
230	.failed:	196	.failed:
231	mov eax, [save_cr3]	197	mov eax, [save_cr3]
232	call set_cr3	198	call set_cr3
233	.err:	199	.err:
234	.err_hdr:	200	.err_hdr:
235	stdcall kernel_free,[file_base]	201	stdcall kernel_free,[file_base]
236	.err_file:	202	.err_file:
237	xor eax, eax	203	xor eax, eax
238	mov [application_table_status],eax	204	mov [application_table_status],eax
239	mov eax, ecx	205	mov eax, ecx
240	ret	206	ret
241	endp	207	endp
242		208
243	align 4	209	align 4
244	test_app_header:	210	test_app_header:
245	virtual at eax	211	virtual at eax
246	APP_HEADER_00 APP_HEADER_00	212	APP_HEADER_00 APP_HEADER_00
247	end virtual	213	end virtual
248	virtual at eax	214	virtual at eax
249	APP_HEADER_01 APP_HEADER_01	215	APP_HEADER_01 APP_HEADER_01
250	end virtual	216	end virtual
251		217
252	cmp dword [eax], 'MENU'	218	cmp dword [eax], 'MENU'
253	jne .fail	219	jne .fail
254	cmp word [eax+4],'ET'	220	cmp word [eax+4],'ET'
255	jne .fail	221	jne .fail
256		222
257	cmp [eax+6], word '00'	223	cmp [eax+6], word '00'
258	jne .check_01_header	224	jne .check_01_header
259		225
260	mov ecx,[APP_HEADER_00.start]	226	mov ecx,[APP_HEADER_00.start]
261	mov [ebx+0x08], ecx ;app_eip	227	mov [ebx+0x08], ecx ;app_eip
262	mov edx,[APP_HEADER_00.mem_size]	228	mov edx,[APP_HEADER_00.mem_size]
263	mov [ebx+0x10], edx ;app_mem	229	mov [ebx+0x10], edx ;app_mem
264	shr edx,1	230	shr edx,1
265	sub edx,0x10	231	sub edx,0x10
266	mov [ebx+0x0C], edx ;app_esp	232	mov [ebx+0x0C], edx ;app_esp
267	mov ecx,[APP_HEADER_00.i_param]	233	mov ecx,[APP_HEADER_00.i_param]
268	mov [ebx], ecx ;app_cmdline	234	mov [ebx], ecx ;app_cmdline
269	mov [ebx+4], dword 0 ;app_path	235	mov [ebx+4], dword 0 ;app_path
270	mov edx, [APP_HEADER_00.i_end]	236	mov edx, [APP_HEADER_00.i_end]
271	mov [ebx+0x14], edx	237	mov [ebx+0x14], edx
272	ret	238	ret
273		239
274	.check_01_header:	240	.check_01_header:
275		241
276	cmp [eax+6],word '01'	242	cmp [eax+6],word '01'
277	jne .fail	243	jne .fail
278		244
279	mov ecx,[APP_HEADER_01.start]	245	mov ecx,[APP_HEADER_01.start]
280	mov [ebx+0x08], ecx ;app_eip	246	mov [ebx+0x08], ecx ;app_eip
281	mov edx,[APP_HEADER_01.mem_size]	247	mov edx,[APP_HEADER_01.mem_size]
282		248
283	; \begin{diamond}[20.08.2006]	249	; \begin{diamond}[20.08.2006]
284	; sanity check (functions 19,58 load app_i_end bytes and that must	250	; sanity check (functions 19,58 load app_i_end bytes and that must
285	; fit in allocated memory to prevent kernel faults)	251	; fit in allocated memory to prevent kernel faults)
286	cmp edx,[APP_HEADER_01.i_end]	252	cmp edx,[APP_HEADER_01.i_end]
287	jb .fail	253	jb .fail
288	; \end{diamond}[20.08.2006]	254	; \end{diamond}[20.08.2006]
289		255
290	mov [ebx+0x10], edx ;app_mem	256	mov [ebx+0x10], edx ;app_mem
291	mov ecx,[APP_HEADER_01.stack_top]	257	mov ecx,[APP_HEADER_01.stack_top]
292	mov [ebx+0x0C], ecx ;app_esp	258	mov [ebx+0x0C], ecx ;app_esp
293	mov edx,[APP_HEADER_01.i_param]	259	mov edx,[APP_HEADER_01.i_param]
294	mov [ebx], edx ;app_cmdline	260	mov [ebx], edx ;app_cmdline
295	mov ecx,[APP_HEADER_01.i_icon]	261	mov ecx,[APP_HEADER_01.i_icon]
296	mov [ebx+4], ecx ;app_path	262	mov [ebx+4], ecx ;app_path
297	mov edx, [APP_HEADER_01.i_end]	263	mov edx, [APP_HEADER_01.i_end]
298	mov [ebx+0x14], edx	264	mov [ebx+0x14], edx
299	ret	265	ret
300	.fail:	266	.fail:
301	xor eax, eax	267	xor eax, eax
302	ret	268	ret
303		269
304	align 4	270	align 4
305	proc get_new_process_place	271	proc get_new_process_place
306	;input:	272	;input:
307	; none	273	; none
308	;result:	274	;result:
309	; eax=[new_process_place]<>0 - ok	275	; eax=[new_process_place]<>0 - ok
310	; 0 - failed.	276	; 0 - failed.
311	;This function find least empty slot.	277	;This function find least empty slot.
312	;It doesn't increase [TASK_COUNT]!	278	;It doesn't increase [TASK_COUNT]!
313	mov eax,CURRENT_TASK	279	mov eax,CURRENT_TASK
314	mov ebx,[TASK_COUNT]	280	mov ebx,[TASK_COUNT]
315	inc ebx	281	inc ebx
316	shl ebx,5	282	shl ebx,5
317	add ebx,eax ;ebx - address of process information for (last+1) slot	283	add ebx,eax ;ebx - address of process information for (last+1) slot
318	.newprocessplace:	284	.newprocessplace:
319	;eax = address of process information for current slot	285	;eax = address of process information for current slot
320	cmp eax,ebx	286	cmp eax,ebx
321	jz .endnewprocessplace ;empty slot after high boundary	287	jz .endnewprocessplace ;empty slot after high boundary
322	add eax,0x20	288	add eax,0x20
323	cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty	289	cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty
324	jnz .newprocessplace	290	jnz .newprocessplace
325	.endnewprocessplace:	291	.endnewprocessplace:
326	mov ebx,eax	292	mov ebx,eax
327	sub eax,CURRENT_TASK	293	sub eax,CURRENT_TASK
328	shr eax,5 ;calculate slot index	294	shr eax,5 ;calculate slot index
329	cmp eax,256	295	cmp eax,256
330	jge .failed ;it should be <256	296	jge .failed ;it should be <256
331	mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary)	297	mov word [ebx+0xa],9 ;set process state to 9 (for slot after hight boundary)
332	ret	298	ret
333	.failed:	299	.failed:
334	xor eax,eax	300	xor eax,eax
335	ret	301	ret
336	endp	302	endp
337		303
338	align 4	304	align 4
339	proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword	305	proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword
340	locals	306	locals
341	app_pages dd ?	307	app_pages dd ?
342	img_pages dd ?	308	img_pages dd ?
343	dir_addr dd ?	309	dir_addr dd ?
344	app_tabs dd ?	310	app_tabs dd ?
345	endl	311	endl
346		312
347	mov ebx, pg_data.pg_mutex	313	mov ebx, pg_data.pg_mutex
348	call wait_mutex ;ebx	314	call wait_mutex ;ebx
349		315
350	xor eax, eax	316	xor eax, eax
351	mov [dir_addr], eax	317	mov [dir_addr], eax
352		318
353	mov eax, [app_size]	319	mov eax, [app_size]
354	add eax, 4095	320	add eax, 4095
355	and eax, NOT(4095)	321	and eax, NOT(4095)
356	mov [app_size], eax	322	mov [app_size], eax
357	mov ebx, eax	323	mov ebx, eax
358	shr eax, 12	324	shr eax, 12
359	mov [app_pages], eax	325	mov [app_pages], eax
360		326
361	add ebx, 0x3FFFFF	327	add ebx, 0x3FFFFF
362	and ebx, NOT(0x3FFFFF)	328	and ebx, NOT(0x3FFFFF)
363	shr ebx, 22	329	shr ebx, 22
364	mov [app_tabs], ebx	330	mov [app_tabs], ebx
365		331
366	mov ecx, [img_size]	332	mov ecx, [img_size]
367	add ecx, 4095	333	add ecx, 4095
368	and ecx, NOT(4095)	334	and ecx, NOT(4095)
369		335
370	mov [img_size], ecx	336	mov [img_size], ecx
371	shr ecx, 12	337	shr ecx, 12
372	mov [img_pages], ecx	338	mov [img_pages], ecx
373		339
374	if GREEDY_KERNEL	340	if GREEDY_KERNEL
375	lea eax, [ecx+ebx+2] ;only image size	341	lea eax, [ecx+ebx+2] ;only image size
376	else	342	else
377	lea eax, [eax+ebx+2] ;all requested memory	343	lea eax, [eax+ebx+2] ;all requested memory
378	end if	344	end if
379	cmp eax, [pg_data.pages_free]	345	cmp eax, [pg_data.pages_free]
380	ja .fail	346	ja .fail
381		347
382	call alloc_page	348	call alloc_page
383	test eax, eax	349	test eax, eax
384	jz .fail	350	jz .fail
385	mov [dir_addr], eax	351	mov [dir_addr], eax
386	stdcall map_page,[tmp_task_pdir],eax,dword PG_SW	352	stdcall map_page,[tmp_task_pdir],eax,dword PG_SW
387		353
388	mov edi, [tmp_task_pdir]	354	mov edi, [tmp_task_pdir]
389	mov ecx, (OS_BASE shr 20)/4	355	mov ecx, (OS_BASE shr 20)/4
390	xor eax, eax	356	xor eax, eax
391	cld	357	cld
392	rep stosd	358	rep stosd
393		359
394	mov ecx, (OS_BASE shr 20)/4	360	mov ecx, (OS_BASE shr 20)/4
395	mov esi, sys_pgdir+(OS_BASE shr 20)	361	mov esi, sys_pgdir+(OS_BASE shr 20)
396	rep movsd	362	rep movsd
397		363
398	mov eax, [dir_addr]	364	mov eax, [dir_addr]
399	or eax, PG_SW	365	or eax, PG_SW
400	mov [edi-4096+(page_tabs shr 20)], eax	366	mov [edi-4096+(page_tabs shr 20)], eax
401		367
402	and eax, -4096	368	and eax, -4096
403	call set_cr3	369	call set_cr3
404		370
405	mov edx, [app_tabs]	371	mov edx, [app_tabs]
406	mov edi, new_app_base	372	mov edi, new_app_base
407	@@:	373	@@:
408	call alloc_page	374	call alloc_page
409	test eax, eax	375	test eax, eax
410	jz .fail	376	jz .fail
411		377
412	stdcall map_page_table, edi, eax	378	stdcall map_page_table, edi, eax
413	add edi, 0x00400000	379	add edi, 0x00400000
414	dec edx	380	dec edx
415	jnz @B	381	jnz @B
416		382
417	mov edi, new_app_base	383	mov edi, new_app_base
418	shr edi, 10	384	shr edi, 10
419	add edi, page_tabs	385	add edi, page_tabs
420		386
421	mov ecx, [app_tabs]	387	mov ecx, [app_tabs]
422	shl ecx, 10	388	shl ecx, 10
423	xor eax, eax	389	xor eax, eax
424	rep stosd	390	rep stosd
425		391
426	mov ecx, [img_pages]	392	mov ecx, [img_pages]
427	mov ebx, PG_UW	393	mov ebx, PG_UW
428	mov edx, new_app_base	394	mov edx, new_app_base
429	mov esi, [img_base]	395	mov esi, [img_base]
430	mov edi, new_app_base	396	mov edi, new_app_base
431	shr esi, 10	397	shr esi, 10
432	shr edi, 10	398	shr edi, 10
433	add esi, page_tabs	399	add esi, page_tabs
434	add edi, page_tabs	400	add edi, page_tabs
435	.remap:	401	.remap:
436	lodsd	402	lodsd
437	or eax, ebx ; force user level r/w access	403	or eax, ebx ; force user level r/w access
438	stosd	404	stosd
439	add edx, 0x1000	405	add edx, 0x1000
440	dec [app_pages]	406	dec [app_pages]
441	dec ecx	407	dec ecx
442	jnz .remap	408	jnz .remap
443		409
444	mov ecx, [app_pages]	410	mov ecx, [app_pages]
445	test ecx, ecx	411	test ecx, ecx
446	jz .done	412	jz .done
447		413
448	if GREEDY_KERNEL	414	if GREEDY_KERNEL
449	mov eax, 0x02	415	mov eax, 0x02
450	.reserve:	416	.reserve:
451	stosd	417	stosd
452	invlpg [edx]	418	invlpg [edx]
453	add edx, 4096	419	add edx, 4096
454	dec ecx	420	dec ecx
455	jnz .reserve	421	jnz .reserve
456	else	422	else
457		423
458	.alloc:	424	.alloc:
459	call alloc_page	425	call alloc_page
460	test eax, eax	426	test eax, eax
461	jz .fail	427	jz .fail
462		428
463	stdcall map_page,edx,eax,dword PG_UW	429	stdcall map_page,edx,eax,dword PG_UW
464	add edx, 0x1000	430	add edx, 0x1000
465	dec [app_pages]	431	dec [app_pages]
466	jnz .alloc	432	jnz .alloc
467	end if	433	end if
468		434
469	.done:	435	.done:
470	stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP	436	stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP
471		437
472	dec [pg_data.pg_mutex]	438	dec [pg_data.pg_mutex]
473	mov eax, [dir_addr]	439	mov eax, [dir_addr]
474	ret	440	ret
475	.fail:	441	.fail:
476	dec [pg_data.pg_mutex]	442	dec [pg_data.pg_mutex]
477	cmp [dir_addr], 0	443	cmp [dir_addr], 0
478	je @f	444	je @f
479	stdcall destroy_app_space, [dir_addr]	445	stdcall destroy_app_space, [dir_addr]
480	@@:	446	@@:
481	xor eax, eax	447	xor eax, eax
482	ret	448	ret
483	endp	449	endp
484		450
485	align 4	451	align 4
486	set_cr3:	452	set_cr3:
-		453
487	mov esi, [CURRENT_TASK]	454	mov ebx, [current_slot]
488	mov ebx, esi	-
489	shl esi,8	-
490	mov [SLOT_BASE+esi+0xB8],eax	-
491	imul ebx,tss_step	-
492	add ebx,tss_data	-
493	mov [ebx+28], eax	455	mov [ebx+APPDATA.dir_table], eax
494	mov cr3, eax	456	mov cr3, eax
-		457
-		458	; mov esi, [CURRENT_TASK]
-		459	; mov ebx, esi
-		460	; shl esi,8
-		461	; mov [SLOT_BASE+esi+0xB8],eax

Subversion Repositories Kolibri OS

(root)/kernel/branches/flat_kernel/core/taskman.inc – Rev 420 → 427