mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-04 22:32:05 +03:00
990e3f745c
Programs from K0600 distr: CDP, KEYASCII git-svn-id: svn://kolibrios.org@147 a494cfbc-eb01-0410-851d-a64ba20cac60
1077 lines
31 KiB
PHP
1077 lines
31 KiB
PHP
if ~defined newprocess_inc
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newprocess_inc_fix:
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newprocess_inc fix newprocess_inc_fix
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include "mem.inc"
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include "memmanag.inc"
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;Working with new types of processes.
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;;Author: Khalyavin Andrey halyavin@land.ru
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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iglobal
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new_process_loading db 'K : New Process - loading',13,10,0
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new_process_running db 'K : New Process - done',13,10,0
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start_not_enough_memory db 'K : New Process - not enough memory',13,10,0
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endg
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;-----------------------------------------------------------------------------
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find_new_process_place:
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;input:
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; none
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;result:
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; eax=[new_process_place]<>0 - ok
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; 0 - failed.
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;This function find least empty slot.
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;It doesn't increase [0x3004]!
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mov eax,0x3000+second_base_address
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push ebx
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mov ebx,[0x3004]
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inc ebx
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shl ebx,5
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add ebx,eax ;ebx - address of process information for (last+1) slot
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.newprocessplace:
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;eax = address of process information for current slot
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cmp eax,ebx
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jz .endnewprocessplace ;empty slot after high boundary
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add eax,0x20
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cmp word [eax+TASKDATA.state],9 ;check process state, 9 means that process slot is empty
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jnz .newprocessplace
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.endnewprocessplace:
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mov ebx,eax
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sub eax,0x3000+second_base_address
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shr eax,5 ;calculate slot index
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cmp eax,256
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jge .failed ;it should be <256
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mov word [ebx+TASKDATA.state],9 ;set process state to 9 (for slot after hight boundary)
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mov [new_process_place],eax ;save process slot
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pop ebx
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ret
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.failed:
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xor eax,eax
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pop ebx
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ret
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;-----------------------------------------------------------------------------
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safe_sti:
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cmp byte [0xe000], 1
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jne @f
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sti
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@@:ret
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;-----------------------------------------------------------------------------
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new_sys_threads:
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;eax=1 - create thread
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; ebx=thread start
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; ecx=thread stack value
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;result:
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; eax=pid
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xor edx,edx ; flags=0
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pushad
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cmp eax,1
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jnz .ret ;other subfunctions
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mov esi,new_process_loading
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call sys_msg_board_str
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;lock application_table_status mutex
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.table_status:
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cli
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cmp [application_table_status],0
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je .stf
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sti
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call change_task
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jmp .table_status
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.stf:
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call set_application_table_status
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;find free process slot
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call find_new_process_place
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test eax,eax
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jz .failed
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;set parameters for thread
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xor eax,eax
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mov [app_i_param],eax
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mov [app_i_icon],eax
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mov [app_start],ebx
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mov [app_esp],ecx
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mov esi,[0x3000]
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shl esi,8
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add esi,0x80000+APPDATA.app_name
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mov ebx,esi ;ebx=esi - pointer to extended information about current thread
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mov edi,[new_process_place]
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shl edi,8
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add edi,0x80000
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lea edx, [edi+APPDATA.app_name] ;edx=edi - pointer to extended infomation about new thread
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mov ecx,256/4
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rep stosd ;clean extended information about new thread
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mov edi,edx
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mov ecx,11
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rep movsb ;copy process name
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mov eax,[ebx+APPDATA.mem_size]
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mov [app_mem],eax ;set memory size
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mov eax,[ebx+APPDATA.dir_table]
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mov dword [edx-APPDATA.app_name+APPDATA.dir_table],eax ;copy page directory
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; mov eax,[new_process_place]
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; mov ebx,[0x3000]
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; call addreference_app_cr3_table
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push 0 ;no parameters
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call fs_execute.add_app_parameters ;start thread
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mov [esp+28],eax
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popad
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ret
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.failed:
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sti
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popad
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mov eax,-1
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ret
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.ret:
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popad
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ret
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;-----------------------------------------------------------------------------
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new_mem_resize:
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;input:
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; ebx - new size
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;result:
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; [esp+36]:=0 - normal
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; [esp+36]:=1 - error
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;This function set new application memory size.
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mov esi,ebx ;save new size
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add ebx,4095
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and ebx,not (4096-1) ;round up size
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mov ecx,[0x3000]
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shl ecx,8
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mov edx,[0x80000 + APPDATA.mem_size +ecx]
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add edx,4095
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and edx,not (4096-1) ;old size
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mov eax,[0x80000 + APPDATA.dir_table+ecx]
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call MEM_Get_Linear_Address
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;eax - linear address of page directory
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call MEM_Heap_Lock ;guarantee that two threads willn't
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;change memory size simultaneously
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cmp ebx,edx
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; mov esi,ebx ;save new size
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jg .expand
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.free:
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sub edx,ebx
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jz .unlock ;do nothing
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mov ecx,edx
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shr ecx,12
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add ebx,std_application_base_address
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call mem_free_specified_region ;free unnecessary pages
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jmp .unlock
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.expand:
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sub ebx,edx
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mov ecx,ebx
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shr ecx,12
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mov ebx,edx
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add ebx,std_application_base_address
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call mem_alloc_specified_region ;alloc necessary pages
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test eax,eax
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jz .failed ;not enough memory
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.unlock:
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mov ebx,esi
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mov eax,[0x3000]
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shl eax,8
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mov [eax+0x80000 + APPDATA.mem_size],ebx ;write new memory size
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;search threads and update
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;application memory size infomation
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mov ecx,[eax+0x80000 + APPDATA.dir_table]
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mov eax,2
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.search_threads:
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;eax = current slot
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;ebx = new memory size
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;ecx = page directory
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cmp eax,[0x3004]
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jg .search_threads_end
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mov edx,eax
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shl edx,5
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cmp word [0x3000+edx+TASKDATA.state],9 ;if slot empty?
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jz .search_threads_next
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shl edx,3
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cmp [edx+0x80000+APPDATA.dir_table],ecx ;if it is our thread?
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jnz .search_threads_next
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mov [edx+0x80000+APPDATA.mem_size],ebx ;update memory size
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.search_threads_next:
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inc eax
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jmp .search_threads
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.search_threads_end:
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call MEM_Heap_UnLock
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mov dword [esp+36],0
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ret
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.failed:
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call MEM_Heap_UnLock
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mov dword [esp+36],1
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ret
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;-----------------------------------------------------------------------------
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pid_to_slot:
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;Input:
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; eax - pid of process
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;Output:
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; eax - slot of process or 0 if process don't exists
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;Search process by PID.
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push ebx
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push ecx
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mov ebx,[0x3004]
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shl ebx,5
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mov ecx,2*32
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.loop:
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;ecx=offset of current process info entry
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;ebx=maximum permitted offset
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cmp byte [second_base_address+0x3000+ecx+TASKDATA.state],9
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jz .endloop ;skip empty slots
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cmp [second_base_address+0x3000+ecx+TASKDATA.pid],eax ;check PID
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jz .pid_found
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.endloop:
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add ecx,32
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cmp ecx,ebx
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jle .loop
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pop ecx
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pop ebx
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xor eax,eax
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ret
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.pid_found:
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shr ecx,5
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mov eax,ecx ;convert offset to index of slot
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pop ecx
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pop ebx
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ret
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;-----------------------------------------------------------------------------
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is_new_process:
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;Input:
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; eax - process slot
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;Output:
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; eax=1 - it is new process
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; eax=0 - it is old process
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; shl eax,5
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; mov eax,[second_base_address+0x3000+eax+0x10]
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; cmp eax,std_application_base_address ;check base address of application
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; jz .new_process
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; xor eax,eax
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; ret
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;.new_process:
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mov eax,1
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ret
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;-----------------------------------------------------------------------------
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write_process_memory:
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;Input:
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; eax - process slot
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; ebx - buffer address
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; ecx - buffer size
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; edx - start address in other process
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;Output:
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; eax - number of bytes written
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pushad
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shl eax,8
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mov eax,[0x80000+eax+APPDATA.dir_table]
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call MEM_Get_Linear_Address
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mov ebp,eax
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;ebp=linear address of page directory of other process.
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add edx,std_application_base_address ;convert to linear address
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test ecx,ecx
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jle .ret
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.write_loop:
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;ebx = current buffer address
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;ecx>0 = current size
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;edx = current address in other process
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;ebp = linear address of page directory
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call MEM_Heap_Lock ;cli
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mov esi,edx
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shr esi,22
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mov eax,[ebp+4*esi] ;find page directory entry
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and eax,not (4096-1) ;clear flags
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test eax,eax
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jz .page_not_found
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call MEM_Get_Linear_Address ;calculate linear address of page table
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test eax,eax
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jz .page_not_found
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mov esi,edx
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shr esi,12
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and esi,1023
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mov eax,[eax+4*esi] ;find page table entry
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and eax,not (4096-1)
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test eax,eax
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jz .page_not_found
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call MEM_Get_Linear_Address ;calculate linear address of page
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test eax,eax
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jz .page_not_found
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mov edi,eax
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call MEM_Add_Reference_Linear;guarantee that page willn't disappear
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call MEM_Heap_UnLock ;sti
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mov esi,edx
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and esi,4095
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add edi,esi ;add offset in page
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;edi = linear address corresponding edx in other process
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sub esi,4096
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neg esi ;esi - number of remaining bytes in page
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cmp esi,ecx
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jl .min_ecx
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mov esi,ecx
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.min_ecx: ;esi=min(ecx,esi) - number of bytes to write
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sub ecx,esi
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push ecx
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mov ecx,esi ;ecx - number of bytes to write
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mov esi,ebx ;esi - source, edi - destination
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add edx,ecx ;move pointer in address space of other process
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push edi
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;move ecx bytes
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test ecx,3
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jnz .not_aligned
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shr ecx,2
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rep movsd
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jmp .next_iter
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.not_aligned:
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rep movsb
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.next_iter:
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pop eax
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and eax,not (4096-1) ;eax - linear address of current page
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call MEM_Free_Page_Linear ;free reference
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mov ebx,esi ;new pointer to buffer - movsb automaticaly advance it.
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pop ecx ;restore number of remaining bytes
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test ecx,ecx
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jnz .write_loop
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.ret:
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popad
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mov eax,ecx
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ret
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.page_not_found:
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call MEM_Heap_UnLock ;error has appeared in critical region
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sub ecx,[esp+24] ;[esp+24]<-->ecx
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neg ecx ;ecx=number_of_written_bytes
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mov [esp+28],ecx ;[esp+28]<-->eax
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popad
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ret
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;-----------------------------------------------------------------------------
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syscall_test:
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;for testing memory manager from applications.
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mov edx,ecx
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mov ecx,ebx
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call trans_address
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mov ebx,eax
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mov eax,[0x3000]
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call read_process_memory
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ret
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;-----------------------------------------------------------------------------
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read_process_memory:
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;Input:
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; eax - process slot
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; ebx - buffer address
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; ecx - buffer size
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; edx - start address in other process
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;Output:
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; eax - number of bytes read.
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pushad
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shl eax,8
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mov eax,[0x80000+eax+APPDATA.dir_table]
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call MEM_Get_Linear_Address
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mov ebp,eax
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add edx,std_application_base_address
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.read_loop:
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;ebx = current buffer address
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;ecx>0 = current size
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;edx = current address in other process
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;ebp = linear address of page directory
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call MEM_Heap_Lock ;cli
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mov esi,edx
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shr esi,22
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mov eax,[ebp+4*esi] ;find page directory entry
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and eax,not (4096-1)
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test eax,eax
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jz .page_not_found
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call MEM_Get_Linear_Address
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test eax,eax
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jz .page_not_found
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mov esi,edx
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shr esi,12
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and esi,1023
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mov eax,[eax+4*esi] ;find page table entry
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and eax,not (4096-1)
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test eax,eax
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jz .page_not_found
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call MEM_Get_Linear_Address ;calculate linear address of page
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test eax,eax
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jz .page_not_found
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mov esi,eax
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call MEM_Add_Reference_Linear;guarantee that page willn't disappear
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call MEM_Heap_UnLock ;sti
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mov edi,edx
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and edi,4095
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add esi,edi ;add offset in page
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;esi = linear address corresponding edx in other process
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sub edi,4096
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neg edi
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;edi=min(edi,ecx) - number of bytes to copy
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cmp edi,ecx
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jl .min_ecx
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mov edi,ecx
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.min_ecx:
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sub ecx,edi ;update size of remaining bytes
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add edx,edi ;update current pointer in other address space.
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push ecx
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mov ecx,edi ;ecx - number of bytes to read
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mov edi,ebx ;esi - source, edi - destination
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push esi
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;move ecx bytes
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test ecx,3
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jnz .not_aligned
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shr ecx,2
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rep movsd
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jmp .next_iter
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.not_aligned:
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rep movsb
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.next_iter:
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pop eax
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and eax,not (4096-1) ;eax - linear address of current page
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call MEM_Free_Page_Linear ;free reference
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mov ebx,edi ;new pointer to buffer - movsb automaticaly advance it.
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pop ecx ;restore number of remaining bytes
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test ecx,ecx
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jnz .read_loop
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popad
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mov eax,ecx
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ret
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.page_not_found:
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call MEM_Heap_UnLock ;error has appeared in critical region
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sub ecx,[esp+24] ;[esp+24]<-->ecx
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neg ecx ;ecx=number_of_read_bytes
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mov [esp+28],ecx ;[esp+28]<-->eax
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popad
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ret
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;-----------------------------------------------------------------------------
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check_region:
|
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;input:
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; ebx - start of buffer
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; ecx - size of buffer
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;result:
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; eax = 1 region lays in app memory
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; eax = 0 region don't lays in app memory
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mov eax,[0x3000]
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jmp check_process_region
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;-----------------------------------------------------------------------------
|
|
check_process_region:
|
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;input:
|
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; eax - slot
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; ebx - start of buffer
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; ecx - size of buffer
|
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;result:
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; eax = 1 region lays in app memory
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; eax = 0 region don't lays in app memory
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test ecx,ecx
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jle .ok
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shl eax,5
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cmp word [0x3000+eax+TASKDATA.state],0
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jnz .failed
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shl eax,3
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mov eax,[0x80000+eax+APPDATA.dir_table]
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test eax,eax
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jz .failed
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call MEM_Get_Linear_Address
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push ebx
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push ecx
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push edx
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mov edx,ebx
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and edx,not (4096-1)
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sub ebx,edx
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add ecx,ebx
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mov ebx,edx
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add ecx,(4096-1)
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and ecx,not (4096-1)
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.loop:
|
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;eax - linear address of page directory
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;ebx - current page
|
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;ecx - current size
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mov edx,ebx
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shr edx,22
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mov edx,[eax+4*edx]
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and edx,not (4096-1)
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test edx,edx
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jz .failed1
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push eax
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mov eax,edx
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call MEM_Get_Linear_Address
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mov edx,ebx
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shr edx,12
|
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and edx,(1024-1)
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mov eax,[eax+4*edx]
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and eax,not (4096-1)
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test eax,eax
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pop eax
|
|
jz .failed1
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add ebx,4096
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sub ecx,4096
|
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jg .loop
|
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pop edx
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pop ecx
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pop ebx
|
|
.ok:
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mov eax,1
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ret
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|
|
|
.failed1:
|
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pop edx
|
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pop ecx
|
|
pop ebx
|
|
.failed:
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xor eax,eax
|
|
ret
|
|
;-----------------------------------------------------------------------------
|
|
new_sys_ipc:
|
|
;input:
|
|
; eax=1 - set ipc buffer area
|
|
; ebx=address of buffer
|
|
; ecx=size of buffer
|
|
; eax=2 - send message
|
|
; ebx=PID
|
|
; ecx=address of message
|
|
; edx=size of message
|
|
cmp eax,1
|
|
jnz .no_ipc_def
|
|
;set ipc buffer area
|
|
mov edi,[0x3000]
|
|
shl edi,8
|
|
add edi,0x80000
|
|
cli
|
|
mov [edi+APPDATA.ipc_start],ebx ;set fields in extended information area
|
|
mov [edi+APPDATA.ipc_size],ecx
|
|
sti
|
|
mov [esp+36],dword 0 ;success
|
|
ret
|
|
|
|
.no_ipc_def:
|
|
cmp eax,2
|
|
jnz .no_ipc_send
|
|
;send message
|
|
cli
|
|
;obtain slot from PID
|
|
mov eax,ebx
|
|
call pid_to_slot
|
|
test eax,eax
|
|
jz .no_pid
|
|
mov ebp,eax
|
|
;ebp = slot of other process
|
|
shl eax,8
|
|
mov edi,[eax+0x80000+APPDATA.ipc_start] ;is ipc area defined?
|
|
test edi,edi
|
|
jz .no_ipc_area
|
|
mov esi,[eax+0x80000+APPDATA.ipc_size] ;esi - size of buffer
|
|
push dword -1 ;temp variable for read_process_memory
|
|
mov ebx,esp
|
|
push ecx
|
|
push edx
|
|
mov ecx,4 ;read 4 bytes
|
|
mov eax,ebp
|
|
mov edx,edi ;from beginning of buffer.
|
|
call read_process_memory
|
|
mov eax,[esp+8]
|
|
test eax,eax
|
|
jnz .ipc_blocked ;if dword [buffer]<>0 - ipc blocked now
|
|
add edx,4 ;move to next 4 bytes
|
|
mov eax,ebp
|
|
call read_process_memory ;read size of occupied space in buffer
|
|
sub esi,8
|
|
sub esi,[esp]
|
|
sub esi,[esp+8] ;esi=(buffer size)-(occupied size)-(message size)-(header of message size)
|
|
js .buffer_overflow ;esi<0 - not enough memory in buffer
|
|
mov esi,[esp+8] ;previous offset
|
|
add dword [esp+8],8
|
|
mov edi,[esp]
|
|
add [esp+8],edi ;add (size of message)+(size of header of message) to [buffer+4]
|
|
mov eax,ebp
|
|
call write_process_memory
|
|
add edx,esi
|
|
sub edx,4 ;move to beginning of place for our message
|
|
mov eax,[second_base_address+0x3010]
|
|
mov eax,[eax+TASKDATA.pid] ;eax - our PID
|
|
mov [esp+8],eax
|
|
mov eax,ebp
|
|
call write_process_memory ;write PID
|
|
mov ebx,esp ;address of size of message
|
|
mov eax,ebp
|
|
add edx,4
|
|
call write_process_memory ;write size of message
|
|
add edx,4
|
|
pop ecx ;ecx - size of message
|
|
pop eax
|
|
call trans_address
|
|
mov ebx,eax ;ebx - linear address of message
|
|
add esp,4 ;pop temporary variable
|
|
mov eax,ebp
|
|
call write_process_memory ;write message
|
|
sti
|
|
;awake other process
|
|
shl ebp,8
|
|
mov eax,ebp
|
|
or [eax+0x80000+APPDATA.event_mask],dword 0x40
|
|
|
|
cmp dword [check_idle_semaphore],20
|
|
jge .ipc_no_cis
|
|
mov dword [check_idle_semaphore],5
|
|
.ipc_no_cis:
|
|
mov dword [esp+36],0
|
|
ret
|
|
.no_ipc_send:
|
|
mov dword [esp+36],-1
|
|
ret
|
|
.no_pid:
|
|
sti
|
|
mov dword [esp+36],4
|
|
ret
|
|
.no_ipc_area:
|
|
sti
|
|
mov dword [esp+36],1
|
|
ret
|
|
.ipc_blocked:
|
|
sti
|
|
add esp,12
|
|
mov dword [esp+36],2
|
|
ret
|
|
.buffer_overflow:
|
|
sti
|
|
add esp,12
|
|
mov dword [esp+36],3
|
|
ret
|
|
;-----------------------------------------------------------------------------
|
|
trans_address:
|
|
;Input
|
|
; eax - application address
|
|
;Output
|
|
; eax - linear address for kernel
|
|
add eax,std_application_base_address
|
|
ret
|
|
;-----------------------------------------------------------------------------
|
|
|
|
; \begin{diamond}
|
|
include 'debug.inc'
|
|
|
|
fs_execute:
|
|
; ebx - cmdline
|
|
; edx - flags
|
|
; ebp - full filename
|
|
; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it
|
|
pushad
|
|
; check filename length - with terminating NULL must be no more than 1024 symbols
|
|
mov edi, ebp
|
|
mov ecx, 1024
|
|
xor eax, eax
|
|
repnz scasb
|
|
jz @f
|
|
popad
|
|
mov eax, -ERROR_FILE_NOT_FOUND
|
|
ret
|
|
@@:
|
|
|
|
mov esi, new_process_loading
|
|
call sys_msg_board_str ; write message to message board
|
|
|
|
; lock application_table_status mutex
|
|
.table_status:
|
|
cli
|
|
cmp [application_table_status], 0
|
|
jz .stf
|
|
sti
|
|
call change_task
|
|
jmp .table_status
|
|
.stf:
|
|
call set_application_table_status
|
|
push ebx ; save command line pointer for add_app_parameters
|
|
|
|
call find_new_process_place ; find new process slot
|
|
call safe_sti
|
|
test eax, eax
|
|
mov ecx, -0x20 ; too many processes
|
|
jz .failed
|
|
|
|
; write application name
|
|
push edi
|
|
mov ecx, edi
|
|
sub ecx, ebp
|
|
mov [appl_path], ebp
|
|
mov [appl_path_size], ecx
|
|
dec edi
|
|
std
|
|
mov al, '/'
|
|
repnz scasb
|
|
cld
|
|
jnz @f
|
|
inc edi
|
|
@@:
|
|
inc edi
|
|
; now edi points to name without path
|
|
mov esi, edi
|
|
mov ecx, 8 ; 8 chars for name
|
|
mov edi, [new_process_place]
|
|
shl edi, cl
|
|
add edi, 0x80000+APPDATA.app_name
|
|
.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 al, ' '
|
|
rep stosb
|
|
pop eax
|
|
mov cl, 3 ; 3 chars for extension
|
|
dec esi
|
|
@@:
|
|
dec eax
|
|
cmp eax, esi
|
|
jbe .copy_process_ext_done
|
|
cmp byte [eax], '.'
|
|
jnz @b
|
|
lea esi, [eax+1]
|
|
.copy_process_ext_loop:
|
|
lodsb
|
|
test al, al
|
|
jz .copy_process_ext_done
|
|
stosb
|
|
loop .copy_process_ext_loop
|
|
.copy_process_ext_done:
|
|
mov al, ' '
|
|
rep stosb
|
|
|
|
; read header
|
|
lea eax, [esp+8+36]
|
|
mov edi, 0x90000
|
|
call dword [eax-4]
|
|
mov ecx, eax
|
|
neg ecx
|
|
jnz .cleanfailed
|
|
; check menuet signature
|
|
mov ecx, -0x1F
|
|
cmp dword [0x90000], 'MENU'
|
|
jnz .cleanfailed
|
|
cmp word [0x90004], 'ET'
|
|
jnz .cleanfailed
|
|
call get_app_params
|
|
mov ecx, -0x1F
|
|
jc .cleanfailed
|
|
; sanity check - because we will load all file,
|
|
; file size must be not greater than memory size
|
|
mov eax, [esp+8+36]
|
|
cmp [app_mem], eax
|
|
jb .cleanfailed
|
|
|
|
mov eax, [new_process_place]
|
|
inc ecx ; -0x1E = no memory
|
|
call create_app_cr3_table
|
|
test eax, eax
|
|
jz .cleanfailed_mem
|
|
|
|
call MEM_Get_Linear_Address
|
|
|
|
mov ebx, std_application_base_address
|
|
mov ecx, [app_mem]
|
|
add ecx, 4095
|
|
shr ecx, 12
|
|
mov edx, eax ; edx - linear address of page directory
|
|
call mem_alloc_specified_region
|
|
mov ecx, -0x1E ; no memory
|
|
test eax, eax
|
|
jz .cleanfailed_mem1
|
|
|
|
add edx, std_application_base_address shr 20
|
|
mov eax, [edx]
|
|
and eax, not 4095
|
|
call MEM_Get_Linear_Address
|
|
push edx ; save pointer to first page table
|
|
mov edx, eax
|
|
; read file
|
|
; first block is already read to 0x90000
|
|
mov eax, [edx]
|
|
and eax, not 0xFFF
|
|
call MEM_Get_Linear_Address
|
|
mov esi, 0x90000
|
|
mov edi, eax
|
|
mov ecx, 512/4
|
|
rep movsd
|
|
sub edi, eax
|
|
.loop1:
|
|
; [esp] = pointer to current page directory entry
|
|
; edx = pointer to current page table
|
|
; edi = offset in page
|
|
mov eax, [edx]
|
|
and eax, not 0xFFF
|
|
call MEM_Get_Linear_Address
|
|
push edi
|
|
add edi, eax
|
|
lea eax, [esp+8+36+8]
|
|
call dword [eax-4]
|
|
pop edi
|
|
test eax, eax
|
|
jnz .endloop1
|
|
add edi, 512 ; new offset
|
|
cmp edi, 4096
|
|
jb .loop1
|
|
xor edi, edi
|
|
add edx, 4 ; go to next page
|
|
test edx, 4096-1
|
|
jnz .loop1
|
|
pop eax
|
|
add eax, 4 ; go to next directory entry
|
|
push eax
|
|
mov eax, [eax]
|
|
and eax, not 0xFFF
|
|
call MEM_Get_Linear_Address
|
|
mov edx, eax
|
|
jmp .loop1
|
|
.endloop1:
|
|
pop edx
|
|
cmp eax, 6
|
|
jnz .cleanfailed_mem2
|
|
call .add_app_parameters
|
|
mov [esp+28], eax
|
|
popad
|
|
ret
|
|
|
|
.cleanfailed_mem2:
|
|
; file read error; free all allocated mem
|
|
mov ecx, eax
|
|
neg ecx
|
|
mov eax, [new_process_place]
|
|
call dispose_app_cr3_table
|
|
jmp .cleanfailed
|
|
.cleanfailed_mem1:
|
|
; there is mem for directory entry, but there is no mem for pages
|
|
; so free directory entry
|
|
mov eax, [new_process_place]
|
|
shl eax, 8
|
|
mov eax, [0x80000+eax+0xB8]
|
|
call MEM_Free_Page
|
|
.cleanfailed_mem:
|
|
; there is no mem for directory entry, display message
|
|
mov esi, start_not_enough_memory
|
|
call sys_msg_board_str
|
|
.cleanfailed:
|
|
push ecx
|
|
; clean process name, this avoid problems with @panel
|
|
mov edi, [new_process_place]
|
|
shl edi, 8
|
|
add edi, 0x80000+APPDATA.app_name
|
|
mov ecx, 11
|
|
mov al, ' '
|
|
rep stosb
|
|
pop eax
|
|
.failed:
|
|
pop ebx
|
|
mov [esp+28], eax
|
|
popad
|
|
mov [application_table_status], 0
|
|
call safe_sti
|
|
ret
|
|
; \end{diamond}
|
|
.add_app_parameters:
|
|
;input:
|
|
; [esp] - pointer to parameters
|
|
; [esp+4]-[esp+36] pushad registers.
|
|
;result
|
|
; eax - pid of new process
|
|
; or zero if failed
|
|
cli
|
|
mov ebx,[new_process_place]
|
|
cmp ebx,[0x3004]
|
|
jle .noinc
|
|
inc dword [0x3004] ;update number of processes
|
|
.noinc:
|
|
|
|
; mov ebx,[new_process_place]
|
|
;set 0x8c field of extended information about process
|
|
;(size of application memory)
|
|
shl ebx,8
|
|
mov eax,[app_mem]
|
|
mov [second_base_address+0x80000+APPDATA.mem_size+ebx],eax
|
|
;set 0x10 field of information about process
|
|
;(application base address)
|
|
; mov ebx,[new_process_place]
|
|
; shl ebx,5
|
|
shr ebx,3
|
|
mov dword [second_base_address+0x3000+ebx+TASKDATA.mem_start],std_application_base_address
|
|
|
|
;add command line parameters
|
|
.add_command_line:
|
|
mov edx,[app_i_param]
|
|
test edx,edx
|
|
jz .no_command_line ;application don't need parameters
|
|
mov eax,[esp+4]
|
|
test eax,eax
|
|
jz .no_command_line ;no parameters specified
|
|
;calculate parameter length
|
|
mov esi,eax
|
|
xor ecx,ecx
|
|
inc ecx ; include terminating null
|
|
.command_line_len:
|
|
cmp byte [esi],0
|
|
jz .command_line_len_end
|
|
inc esi
|
|
inc ecx
|
|
cmp ecx,256
|
|
jl .command_line_len
|
|
|
|
.command_line_len_end:
|
|
;ecx - parameter length
|
|
;edx - address of parameters in new process address space
|
|
mov ebx,eax ;ebx - address of parameters in our address space
|
|
mov eax,[new_process_place]
|
|
call write_process_memory ;copy parameters to new process address space
|
|
|
|
.no_command_line:
|
|
;******************************************************************
|
|
mov edx,[app_i_icon]
|
|
test edx,edx
|
|
jz .no_command_line_1 ;application don't need path of file
|
|
mov ebx,[appl_path]
|
|
mov ecx,[appl_path_size]
|
|
mov eax,[new_process_place]
|
|
call write_process_memory ;copy path of file to new process address space
|
|
.no_command_line_1:
|
|
;******************************************************************
|
|
mov ebx,[new_process_place]
|
|
mov eax,ebx
|
|
shl ebx,5
|
|
mov [ebx+window_data+WDATA.fl_wstate],WSTATE_NORMAL
|
|
mov [ebx+window_data+WDATA.fl_redraw],1
|
|
add ebx,0x3000 ;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+TASKDATA.pid],eax ;set PID
|
|
|
|
mov ecx,ebx
|
|
add ecx,draw_data-0x3000 ;ecx - pointer to draw data
|
|
;set draw data to full screen
|
|
mov [ecx+RECT.left],dword 0
|
|
mov [ecx+RECT.top],dword 0
|
|
mov eax,[0xfe00]
|
|
mov [ecx+RECT.right],eax
|
|
mov eax,[0xfe04]
|
|
mov [ecx+RECT.bottom],eax
|
|
;set cr3 register in TSS of application
|
|
mov ecx,[new_process_place]
|
|
shl ecx,8
|
|
mov eax,[0x80000+APPDATA.dir_table+ecx]
|
|
add eax,8+16 ;add flags
|
|
mov [l.cr3],eax
|
|
|
|
mov eax,[app_start]
|
|
mov [l.eip],eax ;set eip in TSS
|
|
mov eax,[app_esp]
|
|
mov [l.esp],eax ;set stack in TSS
|
|
|
|
;gdt
|
|
;mov ebx,[new_process_place]
|
|
;shl ebx,3
|
|
mov ax,app_code ;ax - selector of code segment
|
|
;add ax,bx
|
|
mov [l.cs],ax
|
|
mov ax,app_data
|
|
;add ax,bx ;ax - selector of data segment
|
|
mov [l.ss],ax
|
|
mov [l.ds],ax
|
|
mov [l.es],ax
|
|
mov [l.fs],ax
|
|
mov ax,graph_data ;ax - selector of graphic segment
|
|
mov [l.gs],ax
|
|
mov [l.io],word 128
|
|
mov [l.eflags],dword 0x11202
|
|
mov [l.ss0],os_data
|
|
mov ebx,[new_process_place]
|
|
shl ebx,12
|
|
add ebx,sysint_stack_data+4096
|
|
mov [l.esp0],ebx
|
|
|
|
;copy tss to it place
|
|
mov eax,tss_sceleton
|
|
mov ebx,[new_process_place]
|
|
imul ebx,tss_step
|
|
add ebx,tss_data ;ebx - address of application TSS
|
|
mov ecx,120
|
|
call memmove
|
|
|
|
;Add IO access table - bit array of permitted ports
|
|
or eax,-1
|
|
mov edi,[new_process_place]
|
|
imul edi,tss_step
|
|
add edi,tss_data+128
|
|
mov ecx,2048
|
|
cld
|
|
rep stosd ;full access to 2048*8=16384 ports
|
|
|
|
mov ecx,ebx ;ecx - address of application TSS
|
|
mov edi,[new_process_place]
|
|
shl edi,3
|
|
;set TSS descriptor
|
|
mov [edi+gdts+tss0+0],word tss_step ;limit (size)
|
|
mov [edi+gdts+tss0+2],cx ;part of offset
|
|
mov eax,ecx
|
|
shr eax,16
|
|
mov [edi+gdts+tss0+4],al ;part of offset
|
|
mov [edi+gdts+tss0+7],ah ;part of offset
|
|
mov [edi+gdts+tss0+5],word 01010000b*256+11101001b ;system flags
|
|
|
|
|
|
;flush keyboard and buttons queue
|
|
mov [0xf400],byte 0
|
|
mov [0xf500],byte 0
|
|
|
|
mov edi,[new_process_place]
|
|
shl edi,5
|
|
add edi,window_data
|
|
mov ebx,[new_process_place]
|
|
movzx esi,word [0xC000+ebx*2]
|
|
lea esi,[0xC400+esi*2]
|
|
call windowactivate ;gui initialization
|
|
|
|
mov ebx,[new_process_place]
|
|
shl ebx,5
|
|
; set if debuggee
|
|
test byte [esp+28], 1
|
|
jz .no_debug
|
|
mov [0x3000+ebx+TASKDATA.state], 1 ; set process state - suspended
|
|
mov eax, [0x3000]
|
|
mov [0x80000+ebx*8+APPDATA.debugger_slot], eax ;set debugger PID - current
|
|
jmp .debug
|
|
.no_debug:
|
|
mov [0x3000+ebx+TASKDATA.state], 0 ; set process state - running
|
|
.debug:
|
|
|
|
mov esi,new_process_running
|
|
call sys_msg_board_str ;output information about succefull startup
|
|
|
|
; add esp,4 ;pop pointer to parameters
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; popad
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mov eax,[process_number] ;set result
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mov [application_table_status],0 ;unlock application_table_status mutex
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call safe_sti
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ret 4
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end if
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