kolibrios-fun/kernel/trunk/core/taskman.inc
Jurgen 5eb750c289 1. Edit procedure check exception 12 (overflow stack)
2. Edit func 68,24
3. Add proc "control exception"
4. Add subfuncs func 51 (GetPriorityThread, SetPriorityThread,GetCurrentThreadId)
5. Add info in ReferenceFunc(rus)

git-svn-id: svn://kolibrios.org@10002 a494cfbc-eb01-0410-851d-a64ba20cac60
2024-03-23 19:19:24 +00:00

1113 lines
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2022. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License. ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision$
GREEDY_KERNEL = 0
struct APP_HEADER_00_
banner dq ?
version dd ? ;+8
start dd ? ;+12
i_end dd ? ;+16
mem_size dd ? ;+20
i_param dd ? ;+24
ends
struct APP_HEADER_01_
banner dq ?
version dd ? ;+8
start dd ? ;+12
i_end dd ? ;+16
mem_size dd ? ;+20
stack_top dd ? ;+24
i_param dd ? ;+28
i_icon dd ? ;+32
ends
struct APP_HDR
cmdline rd 1 ;0x00
path rd 1 ;0x04
eip rd 1 ;0x08
esp rd 1 ;0x0C
_edata rd 1 ;0x10
_emem rd 1 ;0x14
img_base rd 1 ;0x18
img_size rd 1
filename_size rd 1
cmdline_size rd 1
path_string rd 1
ends
macro _clear_ op
{ mov ecx, op/4
xor eax, eax
cld
rep stosd
}
align 4
_strnlen:
mov edx, ecx
xor eax, eax
repne scasb
jne @F
inc ecx
@@:
mov eax, edx
sub eax, ecx
retn
fs_execute_from_sysdir:
xor ebx, ebx
fs_execute_from_sysdir_param:
stdcall kernel_alloc, maxPathLength
push eax ebx
mov esi, ebp
mov edi, eax
xor eax, eax
call getFullPath
pop ecx ebx
xor edx, edx
; @brief Executes a program
; @param edx Flags
; @param ecx Commandline
; @param ebx Absolute file path
; @param eax String length
; @returns Negated error code or new process number
proc fs_execute
locals
cmdline rd 1
flags rd 1
slot rd 1 ; index of new thread slot
slot_base rd 1 ; base address of it
; app header data
hdr_cmdline rd 1
hdr_path rd 1
hdr_eip rd 1
hdr_esp rd 1
hdr_edata rd 1
hdr_emem rd 1
file_base rd 1
file_size rd 1
filename_size rd 1
cmdline_size rd 1
path_string rd 1
endl
and edx, 1 ;clear flags user. TODO: add api for start apps with user flags
mov [flags], edx
mov [cmdline], ecx
mov [path_string], ebx
mov [filename_size], eax
mov esi, -ERROR_FILE_NOT_FOUND
test eax, eax
jz .err_file
stdcall load_file, ebx
test eax, eax
jz .err_file
mov [file_base], eax
mov [file_size], ebx
lea ebx, [hdr_cmdline]
call test_app_header ; fill our app header data locals with values from header of given program (if its correct)
mov esi, -TASKMAN_ERROR_NOT_A_EXECUTABLE
test eax, eax
jz .err_hdr
call lock_application_table
call alloc_thread_slot ; create a slot for new thread
mov esi, -TASKMAN_ERROR_TOO_MANY_PROCESSES
test eax, eax
jz .err_0
mov [slot], eax
shl eax, BSF sizeof.APPDATA
lea edi, [SLOT_BASE + eax]
mov [slot_base], edi
; clean extended information about process
mov ecx, sizeof.APPDATA/4
xor eax, eax
cld
rep stosd
; write application name ( APPDATA.appname )
stdcall strrchr, [path_string], '/'
lea esi, [eax+1] ; -> name without path
mov ecx, 11
mov edi, [slot_base]
@@:
call utf8to16
call uni2ansi_char
cmp al, '.'
jz @f
test al, al
jz @f
stosb
loop @b
@@:
mov edi, [cmdline]
xor eax, eax
test edi, edi
jz @f
mov ecx, 65535
call _strnlen
cmp eax, 256
jb @f
; if cmdline length >= 256 then increase needed memory size by this length
lea ebx, [eax+1]
add [hdr_emem], ebx
@@:
mov [cmdline_size], eax
stdcall create_process, [hdr_emem] ; create a new process
mov esi, -TASKMAN_ERROR_OUT_OF_MEMORY
test eax, eax
jz .err_hdr
; add new process to the list
mov ebx, [sys_proc + LHEAD.prev]
__list_add eax, ebx, sys_proc
; fill the structure fields:
mov ebx, [hdr_emem]
mov [eax + PROC.mem_used], ebx
; write that main thread of app belongs to new process
mov ebx, [slot_base]
mov [ebx + APPDATA.process], eax
; initialize the thread list of process: at this moment it consists only of one main thread
lea edx, [ebx + APPDATA.list]
lea ecx, [eax + PROC.thr_list]
list_add_tail edx, ecx
; allocate space and copy app header data locals and cmdline string there, put pointer to exec_params of new thread
mov eax, [cmdline_size]
add eax, sizeof.APP_HDR
stdcall kernel_alloc, eax
mov [ebx + APPDATA.exec_params], eax
mov edi, eax
lea esi, [hdr_cmdline]
mov ecx, sizeof.APP_HDR/4
rep movsd
mov ecx, [cmdline_size]
mov esi, [cmdline]
rep movsb
; set other parameters of application
lea eax, [hdr_cmdline]
stdcall set_app_params , [slot], eax, [flags]
mov eax, [process_number] ; return process number
call unlock_application_table
ret
.err_0:
call unlock_application_table
.err_hdr:
stdcall kernel_free, [file_base]
.err_file:
stdcall kernel_free, [path_string]
mov eax, esi
ret
endp
align 4
test_app_header:
virtual at eax
APP_HEADER_00 APP_HEADER_00_
end virtual
virtual at eax
APP_HEADER_01 APP_HEADER_01_
end virtual
cmp dword [eax], 'MENU'
jne .fail
cmp word [eax+4], 'ET'
jne .fail
cmp [eax+6], word '00'
jne .check_01_header
mov ecx, [APP_HEADER_00.start]
mov [ebx + APP_HDR.eip], ecx
mov edx, [APP_HEADER_00.mem_size]
mov [ebx + APP_HDR._emem], edx
cmp edx, [APP_HEADER_00.i_end]
jb .fail
cmp edx, OS_BASE ;check memory
jae .fail
mov ecx, [pg_data.pages_free]
shl ecx, 12 ; ecx * 4kb
cmp edx, ecx
jae .fail
shr edx, 1
sub edx, 0x10
mov [ebx + APP_HDR.esp], edx
mov ecx, [APP_HEADER_00.i_param]
mov [ebx + APP_HDR.cmdline], ecx
mov [ebx + APP_HDR.path], 0
mov edx, [APP_HEADER_00.i_end]
mov [ebx + APP_HDR._edata], edx
ret
.check_01_header:
cmp [eax+6], word '01'
je @f
cmp [eax+6], word '02'
jne .fail
@@:
mov ecx, [APP_HEADER_01.start]
mov [ebx + 0x08], ecx
mov edx, [APP_HEADER_01.mem_size]
; \begin{diamond}[20.08.2006]
; sanity check (functions 19,58 load app_i_end bytes and that must
; fit in allocated memory to prevent kernel faults)
cmp edx, [APP_HEADER_01.i_end]
jb .fail
; \end{diamond}[20.08.2006]
cmp edx, OS_BASE ;check memory
jae .fail
mov ecx, [pg_data.pages_free]
shl ecx, 12 ; ecx * 4kb
cmp edx, ecx
jae .fail
mov [ebx + APP_HDR._emem], edx
mov ecx, [APP_HEADER_01.stack_top]
mov [ebx + APP_HDR.esp], ecx
mov edx, [APP_HEADER_01.i_param]
mov [ebx + APP_HDR.cmdline], edx
mov ecx, [APP_HEADER_01.i_icon]
mov [ebx + APP_HDR.path], ecx
mov edx, [APP_HEADER_01.i_end]
mov [ebx + APP_HDR._edata], edx
ret
.fail:
xor eax, eax
ret
align 4
alloc_thread_slot:
;input:
; none
;result:
; eax=[new_thread_slot]<>0 - ok
; 0 - failed.
;This function find least empty slot.
;It doesn't increase [thread_count]!
mov edx, thr_slot_map
pushfd
cli
.l1:
bsf eax, [edx]
jnz .found
add edx, 4
cmp edx, thr_slot_map + 32
jb .l1
popfd
xor eax, eax
ret
.found:
btr [edx], eax
sub edx, thr_slot_map
lea eax, [eax + edx*8]
popfd
ret
align 4
proc create_process stdcall, app_size:dword
locals
process dd ?
app_tabs dd ?
endl
push ebx
push esi
push edi
xor eax, eax
mov [process], eax
mov eax, [app_size]
add eax, 0x3FFFFF
shr eax, 22
mov [app_tabs], eax
stdcall kernel_alloc, 0x2000
test eax, eax
jz .fail
mov [process], eax
lea edi, [eax + PROC.heap_lock]
mov ecx, (PROC.ht_free - PROC.heap_lock)/4
list_init eax
add eax, PROC.thr_list
list_init eax
xor eax, eax
cld
rep stosd
mov [edi], dword (PROC.pdt_0 - PROC.htab)/4 - 3
mov [edi+4], dword 3 ;reserve handles for stdin stdout and stderr
mov ecx, (PROC.pdt_0 - PROC.htab)/4
add edi, 8
inc eax
@@:
stosd
inc eax
cmp eax, ecx
jbe @B
mov eax, edi
call get_pg_addr
mov [edi - PAGE_SIZE + PROC.pdt_0_phys], eax
mov ecx, (OS_BASE shr 20)/4
xor eax, eax
rep stosd
mov ecx, (OS_BASE shr 20)/4
mov esi, sys_proc + PROC.pdt_0 + (OS_BASE shr 20)
rep movsd
mov eax, [edi - 8192 + PROC.pdt_0_phys]
or eax, PG_SWR
mov [edi - PAGE_SIZE + (page_tabs shr 20)], eax
lea edx, [edi - PAGE_SIZE]
mov esi, [app_tabs]
.alloc_page_dir:
call alloc_page
test eax, eax
jz .fail
or eax, PG_UWR
mov [edx], eax
mov edi, [tmp_task_ptab]
stdcall map_page, edi, eax, PG_SWR
mov ecx, PAGE_SIZE/4
xor eax, eax
rep stosd
add edx, 4
dec esi
jnz .alloc_page_dir
stdcall map_page, [tmp_task_ptab], 0, PG_UNMAP
mov eax, [process]
pop edi
pop esi
pop ebx
ret
.fail:
mov ecx, [process]
jcxz @F
call destroy_process
@@:
xor eax, eax
pop edi
pop esi
pop ebx
ret
endp
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
test eax, 2
jz .next
test eax, 1 shl 9
jnz .next ;skip shared pages
call free_page
.next:
add esi, 4
dec ecx
jnz .free
pop esi
ret
endp
align 4
destroy_process: ;fastcall ecx= ptr to process
lea eax, [ecx+PROC.thr_list]
cmp eax, [eax+LHEAD.next]
jne .exit
align 4
.internal:
push ecx
mov esi, ecx
list_del esi
mov esi, [esi + PROC.dlls_list_ptr]
call destroy_all_hdlls
mov esi, [esp]
add esi, PROC.pdt_0
mov edi, (0x80000000 shr 20)/4
.destroy:
mov eax, [esi]
test eax, 1
jz .next
and eax, -PAGE_SIZE
stdcall map_page, [tmp_task_ptab], eax, PG_SWR
stdcall destroy_page_table, [tmp_task_ptab]
mov eax, [esi]
call free_page
.next:
add esi, 4
dec edi
jnz .destroy
call kernel_free ;ecx still in stack
stdcall map_page, [tmp_task_ptab], 0, PG_UNMAP
.exit:
ret
align 4
get_pid:
mov eax, [current_slot]
mov eax, [eax + APPDATA.tid]
ret
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, [thread_count]
shl ebx, BSF sizeof.APPDATA ; multiply by size
; skip first process in the task table
mov ecx, sizeof.APPDATA
.loop:
;ecx = offset of current process info entry
;ebx = maximum permitted offset
cmp [SLOT_BASE + ecx + APPDATA.state], TSTATE_FREE
jz .endloop ;skip empty slots
cmp [SLOT_BASE + ecx + APPDATA.tid], eax
jz .pid_found
.endloop:
add ecx, sizeof.APPDATA
cmp ecx, ebx
jle .loop
pop ecx
pop ebx
xor eax, eax
ret
.pid_found:
shr ecx, BSF sizeof.APPDATA ; divide by size
mov eax, ecx ;convert offset to index of slot
pop ecx
pop ebx
ret
align 4
proc read_process_memory
;Input:
; eax - process slot
; ecx - buffer address
; edx - buffer size
; esi - 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], ecx
and [r_count], 0
mov [tmp_r_cnt], edx
mov [offset], esi
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 ebx, [offset]
push ecx
stdcall map_memEx, [proc_mem_map], \
[slot], ebx, ecx, PG_READ
pop ecx
mov esi, [offset]
and esi, 0xfff
sub eax, esi
jbe .ret
cmp ecx, eax
jbe @f
mov ecx, eax
mov [tmp_r_cnt], eax
@@:
add esi, [proc_mem_map]
mov edi, [buff]
mov edx, ecx
rep movsb
add [r_count], edx
add [offset], edx
sub [tmp_r_cnt], edx
jnz .read_mem
.ret:
popad
mov eax, [r_count]
ret
endp
align 4
proc write_process_memory
;Input:
; eax - process slot
; ecx - buffer address
; edx - buffer size
; esi - 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], ecx
and [w_count], 0
mov [tmp_w_cnt], edx
mov [offset], esi
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 ebx, [offset]
push ecx
stdcall map_memEx, [proc_mem_map], \
[slot], ebx, ecx, PG_SWR
pop ecx
mov edi, [offset]
and edi, 0xfff
sub eax, edi
jbe .ret
cmp ecx, eax
jbe @f
mov ecx, eax
mov [tmp_w_cnt], eax
@@:
add edi, [proc_mem_map]
mov esi, [buff]
mov edx, ecx
rep movsb
add [w_count], edx
add [offset], edx
sub [tmp_w_cnt], edx
jnz .read_mem
.ret:
popad
mov eax, [w_count]
ret
endp
;ebx = 1 - kernel thread
;ecx=thread entry point
;edx=thread stack pointer
;creation flags 0x01 - debugged
; 0x02 - kernel
align 4
proc new_sys_threads
locals
slot dd ?
flags dd ?
app_cmdline dd ? ;0x00
app_path dd ? ;0x04
app_eip dd ? ;0x08
app_esp dd ? ;0x0C
app_mem dd ? ;0x10
endl
shl ebx, 1
mov [flags], ebx
xor eax, eax
mov [app_eip], ecx
mov [app_cmdline], eax
mov [app_esp], edx
mov [app_path], eax
call lock_application_table
call alloc_thread_slot
test eax, eax
jz .failed
mov [slot], eax
mov esi, [current_slot]
mov ebx, esi ;ebx=esi - pointer to information about current thread
mov edi, eax
shl edi, BSF sizeof.APPDATA
add edi, SLOT_BASE
mov edx, edi ;edx=edi - pointer to infomation about new thread
mov ecx, sizeof.APPDATA/4
xor eax, eax
cld
rep stosd ;clean information about new thread
mov esi, ebx
mov edi, edx
mov ecx, 11
rep movsb ;copy process name
mov eax, [ebx + APPDATA.tls_base]
test eax, eax
jz @F
push edx
stdcall user_alloc, PAGE_SIZE
pop edx
test eax, eax
jz .failed1;eax=0
@@:
mov [edx + APPDATA.tls_base], eax
mov eax, [ebx + APPDATA.process]
mov [edx + APPDATA.process], eax
lea ebx, [edx + APPDATA.list]
lea ecx, [eax + PROC.thr_list]
list_add_tail ebx, ecx ;add thread to process child's list
lea eax, [app_cmdline]
stdcall set_app_params , [slot], eax, [flags]
mov eax, [process_number] ;set result
call unlock_application_table
ret
.failed:
xor eax, eax
.failed1:
call unlock_application_table
dec eax ;-1
ret
endp
proc map_process_image stdcall, img_size:dword, file_base:dword, file_size:dword
mov edx, [img_size]
mov esi, [file_base]
mov ecx, [file_size]
add edx, PAGE_SIZE-1
add ecx, PAGE_SIZE-1
shr edx, 12 ; total pages
shr ecx, 12 ; image pages
mov edi, page_tabs
shr esi, 10
add esi, edi
.map_image:
lodsd
and eax, -PAGE_SIZE
or eax, PG_UWR
stosd
dec edx
loop .map_image
test edx, edx
jz .done
.map_bss:
call alloc_page
test eax, eax
jz .fail
or eax, PG_UWR
stosd
dec edx
jnz .map_bss
mov edi, [file_size]
mov ecx, [img_size]
add edi, PAGE_SIZE-1
and edi, -PAGE_SIZE
add ecx, PAGE_SIZE-1
and ecx, -PAGE_SIZE
sub ecx, edi
shr ecx, 2
xor eax, eax
rep stosd
.done:
.fail:
ret
endp
align 4
common_app_entry:
mov ebp, [current_slot]
mov ebp, [ebp + APPDATA.exec_params]
test ebp, ebp
jz .exit
; APPDATA.exec_params have first thread only,
; so second and next threads don't get here (they jump to .exit)
stdcall map_process_image, [ebp + APP_HDR._emem],\
[ebp + APP_HDR.img_base], [ebp + APP_HDR.img_size]
mov esi, [ebp + APP_HDR.path_string]
mov edi, [ebp + APP_HDR.path]
mov ecx, [ebp + APP_HDR.filename_size]
cmp ecx, 1023
jc @f
mov ecx, 1022
@@:
push esi
test edi, edi
jz @f
stdcall is_region_userspace, edi, [ebp + APP_HDR.filename_size]
jnz @f
mov al, '/'
stosb
rep movsb
mov byte [edi], 0
@@:
call kernel_free
mov edi, [ebp + APP_HDR.cmdline]
test edi, edi
jz .check_tls_header
lea esi, [ebp + sizeof.APP_HDR]
mov ecx, [ebp + APP_HDR.cmdline_size]
cmp ecx, 256
jb .copy_cmdline
mov edi, [ebp + APP_HDR._emem]
add edi, PAGE_SIZE-1
and edi, -PAGE_SIZE
sub edi, ecx
dec edi
cmp word [6], '00'
jne @f
mov [APP_HEADER_00_.i_param], edi
jmp .copy_cmdline
@@:
mov [APP_HEADER_01_.i_param], edi
.copy_cmdline:
inc ecx ; keep in mind about 0 in the end
stdcall is_region_userspace, edi, ecx
jnz .check_tls_header
dec ecx
rep movsb
mov byte [edi], 0
.check_tls_header:
cmp word [6], '02'
jne .try_load_dll ;.cleanup
call init_heap
stdcall user_alloc, PAGE_SIZE
mov edx, [current_slot]
mov [edx + APPDATA.tls_base], eax
mov [tls_data_l+2], ax
shr eax, 16
mov [tls_data_l+4], al
mov [tls_data_l+7], ah
mov dx, app_tls
mov fs, dx
; { Patch by Coldy, For DLL autoload
.try_load_dll:
; Test app header version
mov ecx, dword[ebp + APP_HDR.img_base]
cmp dword[ecx+8], 2
jne .cleanup
;if APP_HEADER.version = 2 => load lib/dll.obj & change eip to APP_STARTUP_THUNK
DEBUGF 1, 'K : App header version 2\n'
stdcall load_library, dll_lib_path, 0
cmp eax, 0
jne @f
; Something went wrong (TODO: Next 2 line is code copy after .cleanup)
stdcall free_kernel_space, [ebp+APP_HDR.img_base]
stdcall kernel_free, ebp
DEBUGF 1, 'K : DLL.OBJ not found! Terminate application!\n'
mov ebx, dll_error_msg
mov ebp, notifyapp
call fs_execute_from_sysdir_param
; Terminate process (TODO: Need jump to .cleanup after sys_end ?)
call sys_end
@@:
; Find APP_STARTUP_THUNK in DLL.OBJ
sub eax, 4
mov eax, [eax]
;.change_eip:
mov ecx, [current_slot]
mov ecx, [ecx + APPDATA.pl0_stack]
mov [ecx+REG_EIP], eax
; } End patch by Coldy, For DLL autoload
.cleanup:
stdcall free_kernel_space, [ebp+APP_HDR.img_base]
stdcall kernel_free, ebp
mov ebx, [current_slot]
cmp [ebx + APPDATA.debugger_slot], 0
je .exit
mov [ebx + APPDATA.state], TSTATE_RUN_SUSPENDED
mov [ebx + APPDATA.state], TSTATE_RUN_SUSPENDED
call change_task
.exit:
popad
iretd
EFL_IF = 0x0200
EFL_IOPL1 = 0x1000
EFL_IOPL2 = 0x2000
EFL_IOPL3 = 0x3000
align 4
proc set_app_params stdcall,slot:dword, params:dword, flags:dword
locals
pl0_stack dd ?
endl
mov eax, [xsave_area_size]
add eax, RING0_STACK_SIZE
stdcall kernel_alloc, eax
mov [pl0_stack], eax
lea edi, [eax+RING0_STACK_SIZE]
mov eax, [slot]
mov ebx, eax
shl eax, BSF sizeof.APPDATA
mov [SLOT_BASE + eax + APPDATA.fpu_state], edi
mov [SLOT_BASE + eax + APPDATA.exc_handler], 0
mov [SLOT_BASE + eax + APPDATA.except_mask], 0
mov [SLOT_BASE + eax + APPDATA.terminate_protection], 80000001h
;set default io permission map
mov ecx, [SLOT_BASE + sizeof.APPDATA + APPDATA.io_map]
mov [SLOT_BASE + eax + APPDATA.io_map], ecx
mov ecx, [SLOT_BASE + sizeof.APPDATA + APPDATA.io_map + 4]
mov [SLOT_BASE + eax + APPDATA.io_map + 4], ecx
mov esi, fpu_data
mov ecx, [xsave_area_size]
add ecx, 3
shr ecx, 2
rep movsd
cmp [thread_count], ebx
adc [thread_count], 0 ; update number of processes
shl ebx, BSF sizeof.APPDATA
lea edx, [SLOT_BASE + ebx + APP_EV_OFFSET]
mov [SLOT_BASE + ebx + APPDATA.fd_ev], edx
mov [SLOT_BASE + ebx + APPDATA.bk_ev], edx
add edx, APP_OBJ_OFFSET - APP_EV_OFFSET
mov [SLOT_BASE + ebx + APPDATA.fd_obj], edx
mov [SLOT_BASE + ebx + APPDATA.bk_obj], edx
mov eax, [pl0_stack]
mov [SLOT_BASE + ebx + APPDATA.pl0_stack], eax
add eax, RING0_STACK_SIZE
mov [SLOT_BASE + ebx + APPDATA.saved_esp0], eax
push ebx
stdcall kernel_alloc, maxPathLength ;TODO
pop ebx
mov esi, [current_slot]
mov esi, [esi + APPDATA.cur_dir]
mov ecx, maxPathLength/4
mov edi, eax
mov [SLOT_BASE + ebx + APPDATA.cur_dir], eax
rep movsd
mov [SLOT_BASE + ebx + APPDATA.event_mask], dword 1+2+4;set default event flags (see 40 function)
inc dword [process_number]
mov eax, [process_number]
mov [SLOT_BASE + ebx + APPDATA.tid], eax ;set TID
mov eax, [slot]
mov [SLOT_BASE + ebx + APPDATA.wnd_number], al
;mov ebx, eax
shl eax, BSF sizeof.WDATA
add eax, window_data
mov ecx, eax
mov [SLOT_BASE + ebx + APPDATA.window], eax
mov [eax + WDATA.thread], ebx
add [eax + WDATA.thread], SLOT_BASE
; set window state to 'normal' (non-minimized/maximized/rolled-up) state
mov [eax + WDATA.fl_wstate], WSTATE_NORMAL + WSTATE_USED
mov [eax + WDATA.fl_redraw], WSTATE_REDRAW
mov edx, [def_cursor]
mov [eax + WDATA.cursor], edx
;set draw data to full screen
xor eax, eax
mov [SLOT_BASE + ebx + APPDATA.def_priority], al
mov [ecx + WDATA.draw_data.left], eax
mov [ecx + WDATA.draw_data.top], eax
mov eax, [screen_workarea.right]
mov [ecx + WDATA.draw_data.right], eax
mov eax, [screen_workarea.bottom]
mov [ecx + WDATA.draw_data.bottom], eax
mov ebx, [pl0_stack]
mov esi, [params]
lea ecx, [ebx + REG_EIP]
xor eax, eax
mov [ebx + REG_RET], dword common_app_entry
mov [ebx + REG_EDI], eax
mov [ebx + REG_ESI], eax
mov [ebx + REG_EBP], eax
mov [ebx + REG_ESP], ecx;ebx+REG_EIP
mov [ebx + REG_EBX], eax
mov [ebx + REG_EDX], eax
mov [ebx + REG_ECX], eax
mov [ebx + REG_EAX], eax
mov eax, [esi + APP_HDR.eip]
mov [ebx + REG_EIP], eax
mov [ebx + REG_CS], dword app_code
mov ecx, USER_PRIORITY
test byte [flags], 2
jz @F
mov [ebx + REG_CS], dword os_code ; kernel thread
mov ecx, MAX_PRIORITY
@@:
mov [ebx + REG_EFLAGS], dword EFL_IOPL1+EFL_IF
mov eax, [esi + APP_HDR.esp]
mov [ebx + REG_APP_ESP], eax
mov [ebx + REG_SS], dword app_data
lea edx, [ebx + REG_RET]
mov ebx, [slot]
shl ebx, BSF sizeof.APPDATA
mov [SLOT_BASE + ebx + APPDATA.saved_esp], edx
xor edx, edx; process state - running
; set if debuggee
test byte [flags], 1
jz .no_debug
mov eax, [current_slot_idx]
mov [SLOT_BASE + ebx + APPDATA.debugger_slot], eax
.no_debug:
mov [SLOT_BASE + ebx + APPDATA.state], dl
lea edx, [SLOT_BASE + ebx]
call scheduler_add_thread
ret
endp
align 4
get_stack_base:
mov eax, [current_slot]
mov eax, [eax + APPDATA.pl0_stack]
ret
align 4
get_curr_slot:
mov eax, [current_slot]
ret
pid_to_appdata:
;Input:
; eax - pid of process
;Output:
; eax - 0 - not found or pointer on APPDATA
push ebx
push ecx
mov ebx, [thread_count]
shl ebx, BSF sizeof.APPDATA ; multiply by size
; skip first process in the task table
mov ecx, SLOT_BASE
add ebx, ecx
.loop:
add ecx, sizeof.APPDATA
cmp [ecx + APPDATA.state], TSTATE_FREE
jz @f ;skip empty slots
cmp [ecx + APPDATA.tid], eax
jz .pid_found
@@:
cmp ecx, ebx
jb .loop
pop ecx
pop ebx
xor eax, eax
ret
.pid_found:
mov eax, ecx
pop ecx
pop ebx
ret
include "debug.inc"