;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; 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 - 4096 + 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 - 4096 + (page_tabs shr 20)], eax lea edx, [edi-4096] 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, 1024 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, not 0xFFF 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 extended information about current thread mov edi, eax shl edi, BSF sizeof.APPDATA add edi, SLOT_BASE mov edx, edi ;edx=edi - pointer to extended infomation about new thread mov ecx, sizeof.APPDATA/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.tls_base] test eax, eax jz @F push edx stdcall user_alloc, 4096 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, 4095 add ecx, 4095 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, -4096 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, 4095 and edi, -4096 add ecx, 4095 and ecx, -4096 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, 4095 and edi, -4096 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, 4096 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 ecx, [def_cursor] mov [SLOT_BASE + ebx + APPDATA.cursor], ecx 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 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 ebx, BSF sizeof.WDATA lea ecx, [draw_data + ebx];ecx - pointer to draw data ; set window state to 'normal' (non-minimized/maximized/rolled-up) state mov [window_data + ebx + WDATA.fl_wstate], WSTATE_NORMAL mov [window_data + ebx + WDATA.fl_redraw], 1 ;set draw data to full screen xor eax, eax mov [ecx+0], dword eax mov [ecx+4], dword eax mov eax, [screen_workarea.right] mov [ecx+8], eax mov eax, [screen_workarea.bottom] mov [ecx+12], 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 include "debug.inc"