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Line 117... Line 117...
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proc create_app_space stdcall, app_size:dword,img_size:dword
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proc create_app_space stdcall, app_size:dword,img_size:dword
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           locals
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           locals
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             app_pages   dd ?
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             app_pages   dd ?
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             img_pages   dd ?
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             img_pages   dd ?
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             dir_addr    dd ?
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             dir_addr    dd ?
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             master_addr dd ?
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             app_tabs    dd ?
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             app_tabs    dd ?
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           endl
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           endl
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           stdcall wait_mutex, pg_data.pg_mutex
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           stdcall wait_mutex, pg_data.pg_mutex
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           xor eax, eax
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           mov [dir_addr], eax
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           xor eax, eax
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           mov [master_addr], eax
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           mov [dir_addr], eax
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           mov eax, [app_size]
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           mov eax, [app_size]
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           mov ecx, 256
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           mov ecx, 256
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           mov esi, sys_pgdir+0xc00
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           mov esi, sys_pgdir+0xc00
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           rep movsd
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           call alloc_page
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           test eax, eax
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           jz .fail
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           mov [master_addr], eax
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           stdcall map_page,[tmp_task_ptab],eax,dword PG_SW
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           mov ecx, 384
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           mov edi, [tmp_task_ptab]
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           mov esi, master_tab
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           cld
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           rep movsd
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           mov ecx, 384
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           xor eax, eax
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           rep stosd
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           mov ecx, 256
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           mov esi, master_tab+0xc00
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           rep movsd
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           rep movsd
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           mov eax, [master_addr]
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           mov eax, [dir_addr]
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           or eax, PG_SW
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           or eax, PG_SW
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           mov ebx, [tmp_task_pdir]
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           mov [ebx+0x600], eax
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           mov ecx, [tmp_task_ptab]
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           mov ebx, [tmp_task_pdir]
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           mov [ecx+0x600],eax
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           mov [ebx+0x600], eax
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@@:
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@@:
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           call alloc_page
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           call alloc_page
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           test eax, eax
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           test eax, eax
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           jz .fail
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           jz .fail
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           stdcall map_page_table,[tmp_task_pdir], edi, eax
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           stdcall map_page_table, edi, eax
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           add edi, 0x00400000
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           add edi, 0x00400000
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           dec edx
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           dec edx
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           jnz @B
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           jnz @B
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           shl ecx, 10
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           shl ecx, 10
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           xor eax, eax
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           xor eax, eax
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           rep stosd
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           rep stosd
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           mov edx, new_app_base
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           mov edx, new_app_base
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.alloc:
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.alloc:
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           call alloc_page
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           call alloc_page
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           test eax, eax
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           test eax, eax
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           shr ecx, 2
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           shr ecx, 2
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           xor eax, eax
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           xor eax, eax
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           cld
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           cld
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           rep stosd
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           rep stosd
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           stdcall map_page,[tmp_task_ptab],dword 0,dword PG_UNMAP
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           stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP
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           stdcall map_page,[tmp_task_pdir],dword 0,dword PG_UNMAP
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           dec [pg_data.pg_mutex]
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           dec [pg_data.pg_mutex]
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           mov eax, [pg_dir]
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           mov eax, [pg_dir]
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           and eax, not 0xFFF
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           and eax, not 0xFFF
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           stdcall map_page,[tmp_task_pdir],eax,dword PG_SW
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           stdcall map_page,[tmp_task_pdir],eax,dword PG_SW
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           mov esi, [tmp_task_pdir]
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           mov esi, [tmp_task_pdir]
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           add esi, 0x600
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           mov eax, [esi]
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           call free_page   ;destroy master table
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           add esi, 4
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           add esi, 0x604
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           mov edi, 383
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           mov edi, 383
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.destroy:
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.destroy:
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           mov eax, [esi]
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           mov eax, [esi]
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           test eax, 1
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           test eax, 1