1132 lines
29 KiB
PHP
1132 lines
29 KiB
PHP
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GREEDY_KERNEL equ 0
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struc APP_HEADER_00
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{ .banner dq ?
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.version dd ? ;+8
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.start dd ? ;+12
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.i_end dd ? ;+16
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.mem_size dd ? ;+20
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.i_param dd ? ;+24
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}
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struc APP_HEADER_01
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{ .banner dq ?
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.version dd ? ;+8
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.start dd ? ;+12
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.i_end dd ? ;+16
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.mem_size dd ? ;+20
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.stack_top dd ? ;+24
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.i_param dd ? ;+28
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.i_icon dd ? ;+32
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}
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struc TSS
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{
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._back rw 2
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._esp0 rd 1
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._ss0 rw 2
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._esp1 rd 1
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._ss1 rw 2
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._esp2 rd 1
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._ss2 rw 2
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._cr3 rd 1
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._eip rd 1
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._eflags rd 1
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._eax rd 1
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._ecx rd 1
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._edx rd 1
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._ebx rd 1
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._esp rd 1
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._ebp rd 1
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._esi rd 1
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._edi rd 1
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._es rw 2
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._cs rw 2
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._ss rw 2
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._ds rw 2
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._fs rw 2
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._gs rw 2
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._ldt rw 2
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._trap rw 1
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._io rw 1
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}
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virtual at 0
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TSS TSS
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end virtual
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struc APP_PARAMS
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{ .app_cmdline ;0x00
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.app_path ;0x04
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.app_eip ;0x08
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.app_esp ;0x0C
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.app_mem ;0x10
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}
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macro _clear_ op
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{ mov ecx, op/4
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xor eax, eax
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cld
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rep stosd
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}
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align 4
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proc fs_execute
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;fn_read:dword, file_size:dword, cluster:dword
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; ebx - cmdline
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; edx - flags
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; ebp - full filename
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; [esp+4] = procedure DoRead, [esp+8] = filesize & [esp+12]... - arguments for it
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locals
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cmdline rd 64 ;256/4
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filename rd 256 ;1024/4
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flags dd ?
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save_cr3 dd ?
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slot dd ?
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slot_base dd ?
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file_base dd ?
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file_size dd ?
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;app header data
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hdr_cmdline dd ? ;0x00
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hdr_path dd ? ;0x04
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hdr_eip dd ? ;0x08
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hdr_esp dd ? ;0x0C
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hdr_mem dd ? ;0x10
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hdr_i_end dd ? ;0x14
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endl
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pushad
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mov [cmdline], ebx
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mov [flags], edx
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; [ebp] pointer to filename
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lea eax, [filename]
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mov dword [eax+1020],0 ;force terminate
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;string
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stdcall k_strncpy, eax, [ebp], 1023
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lea eax, [cmdline]
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mov dword [eax+252], 0
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stdcall k_strncpy, eax, [cmdline], 255
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lea eax, [filename]
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stdcall load_file, eax
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mov ecx, -ERROR_FILE_NOT_FOUND
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test eax, eax
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jz .err_file
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mov [file_base], eax
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mov [file_size], ebx
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lea ebx, [hdr_cmdline]
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call test_app_header
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mov ecx, -0x1F
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test eax, eax
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jz .err_hdr
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mov esi, new_process_loading
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call sys_msg_board_str ; write message to message board
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.wait_lock:
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cmp [application_table_status],0
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je .get_lock
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call change_task
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jmp .wait_lock
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.get_lock:
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mov eax, 1
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xchg eax, [application_table_status]
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cmp eax, 0
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jne .wait_lock
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; pushfd
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; cli
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call set_application_table_status
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call get_new_process_place
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test eax, eax
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mov ecx, -0x20 ; too many processes
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jz .err
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mov [slot], eax
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shl eax, 8
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add eax, SLOT_BASE
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mov [slot_base], eax
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mov edi, eax
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_clear_ 256 ;clean extended information about process
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; write application name
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lea edi, [filename]
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mov al, '/'
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call k_strrchr ; now eax points to name without path
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lea esi, [eax+1]
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test eax, eax
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jnz @F
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lea esi, [filename]
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@@:
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mov ecx, 8 ; 8 chars for name
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mov edi, [slot_base]
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.copy_process_name_loop:
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lodsb
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cmp al, '.'
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jz .copy_process_name_done
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test al, al
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jz .copy_process_name_done
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stosb
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loop .copy_process_name_loop
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.copy_process_name_done:
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mov ebx, cr3
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mov [save_cr3], ebx
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stdcall create_app_space,[hdr_mem],[file_base],[file_size]
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mov ecx, -30 ; no memory
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test eax, eax
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jz .failed
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mov ebx,[slot_base]
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mov [ebx+APPDATA.dir_table],eax
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mov eax,[hdr_mem]
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mov [ebx+APPDATA.mem_size],eax
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if GREEDY_KERNEL
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else
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mov ecx, [hdr_mem]
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mov edi, [file_size]
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add edi, 4095
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and edi, not 4095
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sub ecx, edi
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jna @F
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xor eax, eax
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add edi, new_app_base
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cld
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rep stosb
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@@:
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end if
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; release only virtual space, not phisical memory
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stdcall free_kernel_space, [file_base]
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lea eax, [hdr_cmdline]
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lea ebx, [cmdline]
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lea ecx, [filename]
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stdcall set_app_params ,[slot],eax,ebx,ecx,[flags]
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mov eax, [save_cr3]
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call set_cr3
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; popfd
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xor ebx, ebx
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mov [application_table_status],ebx ;unlock application_table_status mutex
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mov eax,[process_number] ;set result
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ret
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.failed:
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mov eax, [save_cr3]
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call set_cr3
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.err:
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; popfd
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.err_hdr:
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stdcall kernel_free,[file_base]
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.err_file:
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xor eax, eax
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mov [application_table_status],eax
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mov eax, ecx
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ret
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endp
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align 4
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test_app_header:
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virtual at eax
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APP_HEADER_00 APP_HEADER_00
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end virtual
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virtual at eax
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APP_HEADER_01 APP_HEADER_01
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end virtual
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cmp dword [eax], 'MENU'
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jne .fail
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cmp word [eax+4],'ET'
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jne .fail
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cmp [eax+6], word '00'
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jne .check_01_header
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mov ecx,[APP_HEADER_00.start]
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mov [ebx+0x08], ecx ;app_eip
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mov edx,[APP_HEADER_00.mem_size]
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mov [ebx+0x10], edx ;app_mem
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shr edx,1
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sub edx,0x10
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mov [ebx+0x0C], edx ;app_esp
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mov ecx,[APP_HEADER_00.i_param]
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mov [ebx], ecx ;app_cmdline
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mov [ebx+4], dword 0 ;app_path
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mov edx, [APP_HEADER_00.i_end]
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mov [ebx+0x14], edx
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ret
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.check_01_header:
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cmp [eax+6],word '01'
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jne .fail
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mov ecx,[APP_HEADER_01.start]
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mov [ebx+0x08], ecx ;app_eip
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mov edx,[APP_HEADER_01.mem_size]
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; \begin{diamond}[20.08.2006]
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; sanity check (functions 19,58 load app_i_end bytes and that must
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; fit in allocated memory to prevent kernel faults)
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cmp edx,[APP_HEADER_01.i_end]
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jb .fail
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; \end{diamond}[20.08.2006]
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mov [ebx+0x10], edx ;app_mem
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mov ecx,[APP_HEADER_01.stack_top]
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mov [ebx+0x0C], ecx ;app_esp
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mov edx,[APP_HEADER_01.i_param]
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mov [ebx], edx ;app_cmdline
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mov ecx,[APP_HEADER_01.i_icon]
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mov [ebx+4], ecx ;app_path
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mov edx, [APP_HEADER_01.i_end]
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mov [ebx+0x14], edx
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ret
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.fail:
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xor eax, eax
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ret
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align 4
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proc get_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 [TASK_COUNT]!
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mov eax,CURRENT_TASK
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mov ebx,[TASK_COUNT]
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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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|
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cmp eax,ebx
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|
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jz .endnewprocessplace ;empty slot after high boundary
|
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|
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add eax,0x20
|
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|
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cmp word [eax+0xa],9 ;check process state, 9 means that process slot is empty
|
||
|
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jnz .newprocessplace
|
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|
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.endnewprocessplace:
|
||
|
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mov ebx,eax
|
||
|
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sub eax,CURRENT_TASK
|
||
|
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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+0xa],9 ;set process state to 9 (for slot after hight boundary)
|
||
|
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; mov [new_process_place], eax
|
||
|
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ret
|
||
|
|
|
||
|
|
.failed:
|
||
|
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xor eax,eax
|
||
|
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ret
|
||
|
|
endp
|
||
|
|
|
||
|
|
align 4
|
||
|
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proc create_app_space stdcall, app_size:dword,img_base:dword,img_size:dword
|
||
|
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locals
|
||
|
|
app_pages dd ?
|
||
|
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img_pages dd ?
|
||
|
|
dir_addr dd ?
|
||
|
|
app_tabs dd ?
|
||
|
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endl
|
||
|
|
|
||
|
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mov ebx, pg_data.pg_mutex
|
||
|
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call wait_mutex ;ebx
|
||
|
|
|
||
|
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xor eax, eax
|
||
|
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mov [dir_addr], eax
|
||
|
|
|
||
|
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mov eax, [app_size]
|
||
|
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add eax, 4095
|
||
|
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and eax, NOT(4095)
|
||
|
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mov [app_size], eax
|
||
|
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mov ebx, eax
|
||
|
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shr eax, 12
|
||
|
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mov [app_pages], eax
|
||
|
|
|
||
|
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add ebx, 0x3FFFFF
|
||
|
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and ebx, NOT(0x3FFFFF)
|
||
|
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shr ebx, 22
|
||
|
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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 esi, sys_pgdir
|
||
|
|
mov edi, [tmp_task_pdir]
|
||
|
|
mov ecx, (page_tabs shr 20)/4
|
||
|
|
cld
|
||
|
|
rep movsd
|
||
|
|
|
||
|
|
mov eax, [dir_addr]
|
||
|
|
or eax, PG_SW
|
||
|
|
stosd ; [(page_tabs shr 20)]= eax
|
||
|
|
|
||
|
|
mov ecx, 0x800/4
|
||
|
|
xor eax, eax
|
||
|
|
rep stosd
|
||
|
|
|
||
|
|
mov eax, [dir_addr]
|
||
|
|
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 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]
|
||
|
|
add esi, 0x800
|
||
|
|
mov edi, 0x800/4
|
||
|
|
.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_TASK]
|
||
|
|
shl esi,8
|
||
|
|
add esi,SLOT_BASE
|
||
|
|
mov ebx,esi ;ebx=esi - pointer to extended information about current thread
|
||
|
|
|
||
|
|
mov edi, eax
|
||
|
|
shl edi,8
|
||
|
|
add edi,SLOT_BASE
|
||
|
|
mov edx,edi ;edx=edi - pointer to extended infomation about new thread
|
||
|
|
mov ecx,256/4
|
||
|
|
xor eax, eax
|
||
|
|
cld
|
||
|
|
rep stosd ;clean extended information about new thread
|
||
|
|
mov esi,ebx
|
||
|
|
mov edi,edx
|
||
|
|
mov ecx,11
|
||
|
|
rep movsb ;copy process name
|
||
|
|
|
||
|
|
mov eax,[ebx+APPDATA.heap_base]
|
||
|
|
mov [edx+APPDATA.heap_base], eax
|
||
|
|
|
||
|
|
mov ecx,[ebx+APPDATA.heap_top]
|
||
|
|
mov [edx+APPDATA.heap_top], ecx
|
||
|
|
|
||
|
|
mov eax,[ebx+APPDATA.mem_size]
|
||
|
|
mov [edx+APPDATA.mem_size], eax
|
||
|
|
|
||
|
|
mov ecx,[ebx+APPDATA.dir_table]
|
||
|
|
mov [edx+APPDATA.dir_table],ecx ;copy page directory
|
||
|
|
|
||
|
|
lea eax, [app_cmdline]
|
||
|
|
stdcall set_app_params ,[slot],eax,dword 0,\
|
||
|
|
dword 0,dword 0
|
||
|
|
|
||
|
|
mov esi,new_process_running
|
||
|
|
call sys_msg_board_str ;output information about succefull startup
|
||
|
|
|
||
|
|
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, 0x2000
|
||
|
|
mov [pl0_stack], eax
|
||
|
|
|
||
|
|
lea edi, [eax+0x2000-512]
|
||
|
|
|
||
|
|
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
|
||
|
|
; 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
|
||
|
|
|
||
|
|
mov ecx,ebx
|
||
|
|
add ecx,(draw_data-CURRENT_TASK) ;ecx - pointer to draw data
|
||
|
|
;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_data
|
||
|
|
mov ebx, [pl0_stack]
|
||
|
|
add ebx, 0x2000-512
|
||
|
|
mov [edi+TSS._esp0],ebx
|
||
|
|
|
||
|
|
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
|
||
|
|
endp
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
include "debug.inc"
|
||
|
|
|
||
|
|
iglobal
|
||
|
|
new_process_loading db 'K : New Process - loading',13,10,0
|
||
|
|
new_process_running db 'K : New Process - done',13,10,0
|
||
|
|
start_not_enough_memory db 'K : New Process - not enough memory',13,10,0
|
||
|
|
endg
|
||
|
|
|