forked from KolibriOS/kolibrios
Rustem Gimadutdinov (rgimad)
73864ff1d7
git-svn-id: svn://kolibrios.org@9019 a494cfbc-eb01-0410-851d-a64ba20cac60
841 lines
24 KiB
PHP
841 lines
24 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;; ;;
|
|
;; Copyright (C) KolibriOS team 2004-2021. All rights reserved. ;;
|
|
;; Distributed under terms of the GNU General Public License. ;;
|
|
;; ;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
$Revision$
|
|
|
|
align 4 ;3A08
|
|
build_interrupt_table:
|
|
mov edi, idts
|
|
mov esi, sys_int
|
|
mov ecx, 0x40
|
|
mov eax, (10001110b shl 24) + os_code
|
|
@@:
|
|
movsw ; low word of code-entry
|
|
stosd ; interrupt gate type : os_code selector
|
|
movsw ; high word of code-entry
|
|
loop @b
|
|
movsd ; copy low dword of trap gate for int 0x40
|
|
movsd ; copy high dword of trap gate for int 0x40
|
|
mov ecx, 23
|
|
mov eax, (10001110b shl 24) + os_code
|
|
@@:
|
|
movsw ; low word of code-entry
|
|
stosd ; interrupt gate type : os_code selector
|
|
movsw ; high word of code-entry
|
|
loop @b
|
|
lidt [esi]
|
|
ret
|
|
|
|
iglobal
|
|
align 4
|
|
sys_int:
|
|
; exception handlers addresses (for interrupt gate construction)
|
|
dd e0,e1,e2,e3,e4,e5,e6,except_7 ; SEE: core/fpu.inc
|
|
dd e8,e9,e10,e11,e12,e13,page_fault_exc,e15
|
|
dd e16, e17,e18, e19
|
|
times 12 dd unknown_interrupt ;int_20..int_31
|
|
|
|
; interrupt handlers addresses (for interrupt gate construction)
|
|
; 0x20+ are IRQ handlers
|
|
dd irq0
|
|
rept 12 irqn:1 \{dd irq_serv.irq_\#irqn\}
|
|
dd irqD
|
|
rept 18 irqn:14 \{dd irq_serv.irq_\#irqn\}
|
|
|
|
; int_0x40 gate trap (for directly copied)
|
|
dw i40 and 0xFFFF, os_code, 11101111b shl 8, i40 shr 16
|
|
|
|
rept 23 irqn:33 \{dd irq_serv.irq_\#irqn\}
|
|
|
|
idtreg: ; data for LIDT instruction (!!! must be immediately below sys_int data)
|
|
dw 2*($-sys_int-4)-1
|
|
dd idts ; 0x8000B100
|
|
dw 0 ; alignment
|
|
|
|
msg_fault_sel dd msg_exc_8,msg_exc_u,msg_exc_a,msg_exc_b
|
|
dd msg_exc_c,msg_exc_d,msg_exc_e,msg_exc_u
|
|
dd msg_exc_u,msg_exc_11
|
|
|
|
msg_exc_8 db "Double fault", 0
|
|
msg_exc_u db "Undefined Exception", 0
|
|
msg_exc_a db "Invalid TSS", 0
|
|
msg_exc_b db "Segment not present", 0
|
|
msg_exc_c db "Stack fault", 0
|
|
msg_exc_d db "General protection fault", 0
|
|
msg_exc_e db "Page fault", 0
|
|
msg_exc_11 db "Alignment Check", 0
|
|
|
|
if lang eq sp
|
|
include 'core/sys32-sp.inc'
|
|
else
|
|
msg_sel_ker db "kernel", 0
|
|
msg_sel_app db "application", 0
|
|
end if
|
|
|
|
endg
|
|
|
|
macro save_ring3_context {
|
|
pushad
|
|
}
|
|
macro restore_ring3_context {
|
|
popad
|
|
}
|
|
macro exc_wo_code [num] {
|
|
e#num :
|
|
save_ring3_context
|
|
mov bl, num
|
|
jmp exc_c
|
|
} exc_wo_code 0,1,2,3,4,5,6,15,16,19
|
|
|
|
macro exc_w_code [num] {
|
|
e#num :
|
|
add esp, 4
|
|
save_ring3_context
|
|
mov bl, num
|
|
jmp exc_c
|
|
} exc_w_code 8,9,10,11,12,13,17,18
|
|
|
|
|
|
uglobal
|
|
pf_err_code dd ?
|
|
endg
|
|
|
|
page_fault_exc: ; foolproof: selectors are clobbered ...
|
|
pop [ss:pf_err_code] ; actually, until the next #PF
|
|
save_ring3_context
|
|
mov bl, 14
|
|
|
|
exc_c: ; exceptions (all but 7th - #NM)
|
|
; stack frame when exception/interrupt from ring3 + pushad (i.e right here)
|
|
reg_ss equ esp+0x30
|
|
reg_esp3 equ esp+0x2C
|
|
reg_eflags equ esp+0x28
|
|
reg_cs3 equ esp+0x24
|
|
reg_eip equ esp+0x20
|
|
; this if frame from pushad
|
|
reg_eax equ esp+0x1C
|
|
reg_ecx equ esp+0x18
|
|
reg_edx equ esp+0x14
|
|
reg_ebx equ esp+0x10
|
|
reg_esp0 equ esp+0x0C
|
|
reg_ebp equ esp+0x08
|
|
reg_esi equ esp+0x04
|
|
reg_edi equ esp+0x00
|
|
|
|
mov ax, app_data ; exception
|
|
mov ds, ax ; load proper values
|
|
mov es, ax ; to registers
|
|
cld ; clear the direction flag
|
|
movzx ebx, bl
|
|
; redirect to V86 manager? (EFLAGS & 0x20000) != 0?
|
|
test byte[reg_eflags+2], 2
|
|
jnz v86_exc_c
|
|
cmp bl, 14 ; #PF
|
|
jne @f
|
|
call page_fault_handler ; SEE: core/memory.inc
|
|
@@:
|
|
mov esi, [current_slot]
|
|
btr [esi+APPDATA.except_mask], ebx
|
|
jnc @f
|
|
mov eax, [esi+APPDATA.exc_handler]
|
|
test eax, eax
|
|
jnz IRetToUserHook
|
|
@@:
|
|
cli
|
|
mov eax, [esi+APPDATA.debugger_slot]
|
|
test eax, eax
|
|
jnz .debug
|
|
; not debuggee => say error and terminate
|
|
call show_error_parameters
|
|
sti
|
|
mov [edx + TASKDATA.state], TSTATE_TERMINATING
|
|
call wakeup_osloop
|
|
call change_task
|
|
; If we're here, then the main OS thread has crashed before initializing IDLE thread.
|
|
; Or they both have crashed. Anyway, things are hopelessly broken.
|
|
hlt
|
|
jmp $-1
|
|
.debug:
|
|
; we are debugged process, notify debugger and suspend ourself
|
|
; eax=debugger PID
|
|
mov ecx, 1 ; debug_message code=other_exception
|
|
cmp bl, 1 ; #DB
|
|
jne .notify ; notify debugger and suspend ourself
|
|
mov ebx, dr6 ; debug_message data=DR6_image
|
|
xor edx, edx
|
|
mov dr6, edx
|
|
mov edx, dr7
|
|
mov cl, not 8
|
|
.l1:
|
|
shl dl, 2
|
|
jc @f
|
|
and bl, cl
|
|
@@:
|
|
sar cl, 1
|
|
jc .l1
|
|
mov cl, 3 ; debug_message code=debug_exception
|
|
.notify:
|
|
push ebx ; debug_message data
|
|
mov ebx, [TASK_BASE]
|
|
push [ebx+TASKDATA.pid] ; PID
|
|
push ecx ; debug_message code ((here: ecx==1/3))
|
|
mov cl, 12 ; debug_message size
|
|
call debugger_notify ;; only ONE using, inline ??? SEE: core/debug.inc
|
|
add esp, 12
|
|
mov edx, [TASK_BASE]
|
|
mov [edx+TASKDATA.state], TSTATE_RUN_SUSPENDED
|
|
call change_task ; SEE: core/shed.inc
|
|
restore_ring3_context
|
|
iretd
|
|
|
|
IRetToUserHook:
|
|
xchg eax, [reg_eip]
|
|
sub dword[reg_esp3], 8
|
|
mov edi, [reg_esp3]
|
|
stosd
|
|
mov [edi], ebx
|
|
restore_ring3_context
|
|
; simply return control to interrupted process
|
|
unknown_interrupt:
|
|
iretd
|
|
|
|
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|
|
; bl - error vector
|
|
show_error_parameters:
|
|
cmp bl, 0x06
|
|
jnz .no_ud
|
|
push ebx
|
|
mov ebx, ud_user_message
|
|
mov ebp, notifyapp
|
|
call fs_execute_from_sysdir_param
|
|
pop ebx
|
|
.no_ud:
|
|
mov edx, [TASK_BASE];not scratched below
|
|
if lang eq sp
|
|
DEBUGF 1, "K : Proceso - terminado forzado PID: %x [%s]\n", [edx+TASKDATA.pid], [current_slot]
|
|
else
|
|
DEBUGF 1, "K : Process - forced terminate PID: %x [%s]\n", [edx+TASKDATA.pid], [current_slot]
|
|
end if
|
|
cmp bl, 0x08
|
|
jb .l0
|
|
cmp bl, 0x11
|
|
jbe .l1
|
|
.l0:
|
|
mov bl, 0x09
|
|
.l1:
|
|
mov eax, [msg_fault_sel+ebx*4 - 0x08*4]
|
|
DEBUGF 1, "K : %s\n", eax
|
|
mov eax, [reg_cs3+4]
|
|
mov edi, msg_sel_app
|
|
mov ebx, [reg_esp3+4]
|
|
cmp eax, app_code
|
|
je @f
|
|
mov edi, msg_sel_ker
|
|
mov ebx, [reg_esp0+4]
|
|
@@:
|
|
DEBUGF 1, "K : EAX : %x EBX : %x ECX : %x\n", [reg_eax+4], [reg_ebx+4], [reg_ecx+4]
|
|
DEBUGF 1, "K : EDX : %x ESI : %x EDI : %x\n", [reg_edx+4], [reg_esi+4], [reg_edi+4]
|
|
DEBUGF 1, "K : EBP : %x EIP : %x ESP : %x\n", [reg_ebp+4], [reg_eip+4], ebx
|
|
DEBUGF 1, "K : Flags : %x CS : %x (%s)\n", [reg_eflags+4], eax, edi
|
|
|
|
DEBUGF 1, "K : Stack dump:\n"
|
|
push eax ebx ecx edx
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, "K : [ESP+00]: %x",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, " [ESP+04]: %x",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, " [ESP+08]: %x\n",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, "K : [ESP+12]: %x",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, " [ESP+16]: %x",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, " [ESP+20]: %x\n",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, "K : [ESP+24]: %x",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, " [ESP+28]: %x",[ebx]
|
|
add ebx, 4
|
|
call .check_ESP
|
|
test eax, eax
|
|
jnz .error_ESP
|
|
DEBUGF 1, " [ESP+32]: %x\n",[ebx]
|
|
pop edx ecx ebx eax
|
|
ret
|
|
.error_ESP:
|
|
pop edx ecx ebx eax
|
|
DEBUGF 1, "\n"
|
|
DEBUGF 1, "K : Unexpected end of the stack\n"
|
|
ret
|
|
;--------------------------------------
|
|
.check_ESP:
|
|
push ebx
|
|
shr ebx, 12
|
|
mov ecx, ebx
|
|
shr ecx, 10
|
|
mov edx, [master_tab+ecx*4]
|
|
test edx, PG_READ
|
|
jz .fail ; page table is not created
|
|
; incorrect address in the program
|
|
|
|
mov eax, [page_tabs+ebx*4]
|
|
test eax, 2
|
|
jz .fail ; address not reserved for use. error
|
|
|
|
pop ebx
|
|
xor eax, eax
|
|
ret
|
|
|
|
.fail:
|
|
pop ebx
|
|
xor eax, eax
|
|
dec eax
|
|
ret
|
|
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
|
|
|
|
restore reg_ss
|
|
restore reg_esp3
|
|
restore reg_eflags
|
|
restore reg_cs
|
|
restore reg_eip
|
|
restore reg_eax
|
|
restore reg_ecx
|
|
restore reg_edx
|
|
restore reg_ebx
|
|
restore reg_esp0
|
|
restore reg_ebp
|
|
restore reg_esi
|
|
restore reg_edi
|
|
|
|
|
|
align 4
|
|
lock_application_table:
|
|
push eax ecx edx
|
|
mov ecx, application_table_mutex
|
|
call mutex_lock
|
|
|
|
mov eax, [current_slot_idx]
|
|
shl eax, BSF sizeof.TASKDATA
|
|
add eax, TASK_TABLE+TASKDATA.pid
|
|
mov eax, [eax]
|
|
|
|
mov [application_table_owner], eax
|
|
|
|
pop edx ecx eax
|
|
|
|
ret
|
|
|
|
align 4
|
|
unlock_application_table:
|
|
push eax ecx edx
|
|
|
|
mov [application_table_owner], 0
|
|
mov ecx, application_table_mutex
|
|
call mutex_unlock
|
|
|
|
pop edx ecx eax
|
|
|
|
ret
|
|
|
|
; sysfn 64 implementation
|
|
align 4
|
|
sys_resize_app_memory:
|
|
; in: eax = 64 - function number
|
|
; ebx = 1 - number of its only subfunction
|
|
; ecx = new amount of memory
|
|
; out:
|
|
; eax = 0 - success
|
|
; eax = 1 - out of memory
|
|
|
|
; cmp eax,1
|
|
dec ebx
|
|
jnz .no_application_mem_resize
|
|
|
|
mov eax, [pg_data.pages_free]
|
|
shl eax, 12
|
|
cmp eax, ecx
|
|
jae @f
|
|
|
|
xor eax, eax
|
|
inc eax
|
|
jmp .store_result
|
|
@@:
|
|
stdcall new_mem_resize, ecx
|
|
.store_result:
|
|
mov [esp+32], eax
|
|
.no_application_mem_resize:
|
|
ret
|
|
|
|
iglobal
|
|
; process_terminating db 'K : Process - terminating',13,10,0
|
|
; process_terminated db 'K : Process - done',13,10,0
|
|
msg_obj_destroy db 'K : destroy app object',13,10,0
|
|
endg
|
|
|
|
; param
|
|
; esi= slot
|
|
|
|
align 4
|
|
terminate: ; terminate application
|
|
destroy_thread:
|
|
|
|
.slot equ esp+4 ;locals
|
|
.process equ esp ;ptr to parent process
|
|
|
|
|
|
push esi ;save .slot
|
|
|
|
shl esi, 8
|
|
mov edx, [SLOT_BASE+esi+APPDATA.process]
|
|
test edx, edx
|
|
jnz @F
|
|
pop esi
|
|
shl esi, BSF sizeof.TASKDATA
|
|
mov [TASK_TABLE+esi+TASKDATA.state], TSTATE_FREE
|
|
ret
|
|
@@:
|
|
push edx ;save .process
|
|
lea edx, [SLOT_BASE+esi]
|
|
call scheduler_remove_thread
|
|
call lock_application_table
|
|
|
|
; if the process is in V86 mode...
|
|
mov eax, [.slot]
|
|
shl eax, 8
|
|
mov esi, [eax+SLOT_BASE+APPDATA.pl0_stack]
|
|
add esi, RING0_STACK_SIZE
|
|
cmp [eax+SLOT_BASE+APPDATA.saved_esp0], esi
|
|
jz .nov86
|
|
; ...it has page directory for V86 mode
|
|
mov esi, [eax+SLOT_BASE+APPDATA.saved_esp0]
|
|
mov ecx, [esi+4]
|
|
mov [eax+SLOT_BASE+APPDATA.process], ecx
|
|
; ...and I/O permission map for V86 mode
|
|
mov ecx, [esi+12]
|
|
mov [eax+SLOT_BASE+APPDATA.io_map], ecx
|
|
mov ecx, [esi+8]
|
|
mov [eax+SLOT_BASE+APPDATA.io_map+4], ecx
|
|
.nov86:
|
|
; destroy per-thread kernel objects
|
|
mov esi, [.slot]
|
|
shl esi, 8
|
|
add esi, SLOT_BASE+APP_OBJ_OFFSET
|
|
@@:
|
|
mov eax, [esi+APPOBJ.fd]
|
|
test eax, eax
|
|
jz @F
|
|
|
|
cmp eax, esi
|
|
je @F
|
|
|
|
push esi
|
|
call [eax+APPOBJ.destroy]
|
|
DEBUGF 1,"%s",msg_obj_destroy
|
|
pop esi
|
|
jmp @B
|
|
@@:
|
|
mov esi, [.slot]
|
|
cmp [fpu_owner], esi ; if user fpu last -> fpu user = 2
|
|
jne @F
|
|
|
|
mov [fpu_owner], 2
|
|
mov eax, [sizeof.APPDATA*2+SLOT_BASE+APPDATA.fpu_state]
|
|
clts
|
|
bt [cpu_caps], CAPS_SSE
|
|
jnc .no_SSE
|
|
fxrstor [eax]
|
|
jmp @F
|
|
.no_SSE:
|
|
fnclex
|
|
frstor [eax]
|
|
@@:
|
|
|
|
mov [KEY_COUNT], byte 0 ; empty keyboard buffer
|
|
mov [BTN_COUNT], byte 0 ; empty button buffer
|
|
|
|
|
|
; remove defined hotkeys
|
|
mov eax, hotkey_list
|
|
.loop:
|
|
cmp [eax+8], esi
|
|
jnz .cont
|
|
mov ecx, [eax]
|
|
jecxz @f
|
|
push dword [eax+12]
|
|
pop dword [ecx+12]
|
|
@@:
|
|
mov ecx, [eax+12]
|
|
push dword [eax]
|
|
pop dword [ecx]
|
|
xor ecx, ecx
|
|
mov [eax], ecx
|
|
mov [eax+4], ecx
|
|
mov [eax+8], ecx
|
|
mov [eax+12], ecx
|
|
.cont:
|
|
add eax, 16
|
|
cmp eax, hotkey_list+256*16
|
|
jb .loop
|
|
; get process PID
|
|
mov eax, esi
|
|
shl eax, BSF sizeof.TASKDATA
|
|
mov eax, [eax+TASK_TABLE+TASKDATA.pid]
|
|
; compare current lock input with process PID
|
|
cmp eax, [PID_lock_input]
|
|
jne @f
|
|
|
|
xor eax, eax
|
|
mov [PID_lock_input], eax
|
|
@@:
|
|
; remove hotkeys in buffer
|
|
mov eax, hotkey_buffer
|
|
.loop2:
|
|
cmp [eax], esi
|
|
jnz .cont2
|
|
and dword [eax+4], 0
|
|
and dword [eax], 0
|
|
.cont2:
|
|
add eax, 8
|
|
cmp eax, hotkey_buffer+120*8
|
|
jb .loop2
|
|
|
|
mov ecx, esi ; remove buttons
|
|
bnewba2:
|
|
mov edi, [BTN_ADDR]
|
|
mov eax, edi
|
|
cld
|
|
movzx ebx, word [edi]
|
|
inc bx
|
|
bnewba:
|
|
dec bx
|
|
jz bnmba
|
|
add eax, 0x10
|
|
cmp cx, [eax]
|
|
jnz bnewba
|
|
pusha
|
|
mov ecx, ebx
|
|
inc ecx
|
|
shl ecx, 4
|
|
mov ebx, eax
|
|
add eax, 0x10
|
|
call memmove
|
|
dec dword [edi]
|
|
popa
|
|
jmp bnewba2
|
|
bnmba:
|
|
|
|
pusha ; save window coordinates for window restoring
|
|
cld
|
|
shl esi, BSF sizeof.WDATA
|
|
add esi, window_data
|
|
mov eax, [esi+WDATA.box.left]
|
|
mov [draw_limits.left], eax
|
|
add eax, [esi+WDATA.box.width]
|
|
mov [draw_limits.right], eax
|
|
mov eax, [esi+WDATA.box.top]
|
|
mov [draw_limits.top], eax
|
|
add eax, [esi+WDATA.box.height]
|
|
mov [draw_limits.bottom], eax
|
|
|
|
xor eax, eax
|
|
mov edi, esi
|
|
mov ecx, sizeof.WDATA/4
|
|
rep stosd
|
|
|
|
lea edi, [esi-window_data+draw_data]
|
|
mov ecx, sizeof.WDATA/4
|
|
rep stosd
|
|
popa
|
|
|
|
; debuggee test
|
|
pushad
|
|
mov edi, esi
|
|
shl edi, BSF sizeof.TASKDATA
|
|
mov eax, [SLOT_BASE+edi*8+APPDATA.debugger_slot]
|
|
test eax, eax
|
|
jz .nodebug
|
|
movi ecx, 8
|
|
push dword [TASK_TABLE+edi+TASKDATA.pid]; PID
|
|
push 2
|
|
call debugger_notify
|
|
pop ecx
|
|
pop ecx
|
|
.nodebug:
|
|
popad
|
|
|
|
mov ebx, [.slot]
|
|
shl ebx, 8
|
|
push ebx
|
|
mov ebx, [SLOT_BASE+ebx+APPDATA.pl0_stack]
|
|
|
|
stdcall kernel_free, ebx
|
|
|
|
pop ebx
|
|
mov ebx, [SLOT_BASE+ebx+APPDATA.cur_dir]
|
|
stdcall kernel_free, ebx
|
|
|
|
mov edi, [.slot]
|
|
shl edi, 8
|
|
add edi, SLOT_BASE
|
|
|
|
mov eax, [edi+APPDATA.io_map]
|
|
cmp eax, [SLOT_BASE+sizeof.APPDATA+APPDATA.io_map]
|
|
je @F
|
|
call free_page
|
|
@@:
|
|
mov eax, [edi+APPDATA.io_map+4]
|
|
cmp eax, [SLOT_BASE+sizeof.APPDATA+APPDATA.io_map+4]
|
|
je @F
|
|
call free_page
|
|
@@:
|
|
lea ebx, [edi+APPDATA.list]
|
|
list_del ebx ;destroys edx, ecx
|
|
|
|
mov eax, 0x20202020
|
|
stosd
|
|
stosd
|
|
stosd
|
|
mov ecx, 244/4
|
|
xor eax, eax
|
|
rep stosd
|
|
|
|
; activate window
|
|
movzx eax, word [WIN_STACK + esi*2]
|
|
cmp eax, [thread_count]
|
|
jne .dont_activate
|
|
pushad
|
|
.check_next_window:
|
|
dec eax
|
|
cmp eax, 1
|
|
jbe .nothing_to_activate
|
|
lea esi, [WIN_POS+eax*2]
|
|
movzx edi, word [esi] ; edi = process
|
|
shl edi, BSF sizeof.TASKDATA
|
|
cmp [TASK_TABLE + edi + TASKDATA.state], TSTATE_FREE ; skip free slots
|
|
je .check_next_window
|
|
add edi, window_data
|
|
; \begin{diamond}[19.09.2006]
|
|
; skip minimized windows
|
|
test [edi + WDATA.fl_wstate], WSTATE_MINIMIZED
|
|
jnz .check_next_window
|
|
; \end{diamond}
|
|
call waredraw
|
|
.nothing_to_activate:
|
|
popad
|
|
.dont_activate:
|
|
|
|
push esi ; remove hd1 & cd & flp reservation
|
|
shl esi, BSF sizeof.TASKDATA
|
|
mov esi, [esi+TASK_TABLE+TASKDATA.pid]
|
|
cmp [cd_status], esi
|
|
jnz @f
|
|
call free_cd_channel
|
|
and [cd_status], 0
|
|
@@:
|
|
pop esi
|
|
cmp [bgrlockpid], esi
|
|
jnz @f
|
|
and [bgrlockpid], 0
|
|
and [bgrlock], 0
|
|
@@:
|
|
|
|
pusha ; remove all port reservations
|
|
mov edx, esi
|
|
shl edx, BSF sizeof.TASKDATA
|
|
add edx, TASK_TABLE
|
|
mov edx, [edx+TASKDATA.pid]
|
|
|
|
rmpr0:
|
|
|
|
mov esi, [RESERVED_PORTS]
|
|
|
|
test esi, esi
|
|
jz rmpr9
|
|
|
|
rmpr3:
|
|
|
|
mov edi, esi
|
|
shl edi, 4
|
|
add edi, RESERVED_PORTS
|
|
|
|
cmp edx, [edi]
|
|
je rmpr4
|
|
|
|
dec esi
|
|
jnz rmpr3
|
|
|
|
jmp rmpr9
|
|
|
|
rmpr4:
|
|
|
|
mov ecx, 256
|
|
sub ecx, esi
|
|
shl ecx, 4
|
|
|
|
mov esi, edi
|
|
add esi, 16
|
|
cld
|
|
rep movsb
|
|
|
|
dec dword [RESERVED_PORTS]
|
|
|
|
jmp rmpr0
|
|
|
|
rmpr9:
|
|
|
|
popa
|
|
mov edi, esi ; do not run this process slot
|
|
shl edi, BSF sizeof.TASKDATA
|
|
mov [edi+TASK_TABLE + TASKDATA.state], TSTATE_FREE
|
|
; debugger test - terminate all debuggees
|
|
mov eax, 2
|
|
mov ecx, SLOT_BASE+2*0x100+APPDATA.debugger_slot
|
|
.xd0:
|
|
cmp eax, [thread_count]
|
|
ja .xd1
|
|
cmp dword [ecx], esi
|
|
jnz @f
|
|
and dword [ecx], 0
|
|
pushad
|
|
xchg eax, ecx
|
|
mov ebx, 2
|
|
call sys_system
|
|
popad
|
|
@@:
|
|
inc eax
|
|
add ecx, 0x100
|
|
jmp .xd0
|
|
.xd1:
|
|
;release slot
|
|
|
|
bts [thr_slot_map], esi
|
|
|
|
mov ecx, [.process]
|
|
lea eax, [ecx+PROC.thr_list]
|
|
cmp eax, [eax+LHEAD.next]
|
|
jne @F
|
|
|
|
call destroy_process.internal
|
|
@@:
|
|
sti ; .. and life goes on
|
|
|
|
mov eax, [draw_limits.left]
|
|
mov ebx, [draw_limits.top]
|
|
mov ecx, [draw_limits.right]
|
|
mov edx, [draw_limits.bottom]
|
|
call calculatescreen
|
|
xor eax, eax
|
|
xor esi, esi
|
|
call redrawscreen
|
|
|
|
call unlock_application_table
|
|
;mov esi,process_terminated
|
|
;call sys_msg_board_str
|
|
add esp, 8
|
|
ret
|
|
restore .slot
|
|
restore .process
|
|
|
|
; Three following procedures are used to guarantee that
|
|
; some part of kernel code will not be terminated from outside
|
|
; while it is running.
|
|
; Note: they do not protect a thread from terminating due to errors inside
|
|
; the thread; accessing a nonexisting memory would still terminate it.
|
|
|
|
; First two procedures must be used in pair by thread-to-be-protected
|
|
; to signal the beginning and the end of an important part.
|
|
; It is OK to have nested areas.
|
|
|
|
; The last procedure must be used by outside wanna-be-terminators;
|
|
; if it is safe to terminate the given thread immediately, it returns eax=1;
|
|
; otherwise, it returns eax=0 and notifies the target thread that it should
|
|
; terminate itself when leaving a critical area (the last critical area if
|
|
; they are nested).
|
|
|
|
; Implementation. Those procedures use one dword in APPDATA for the thread,
|
|
; APPDATA.terminate_protection.
|
|
; * The upper bit is 1 during normal operations and 0 when terminate is requested.
|
|
; * Other bits form a number = depth of critical regions,
|
|
; plus 1 if the upper bit is 1.
|
|
; * When this dword goes to zero, the thread should be destructed,
|
|
; and the procedure in which it happened becomes responsible for destruction.
|
|
|
|
; Enter critical area. Called by thread which wants to be protected.
|
|
proc protect_from_terminate
|
|
mov edx, [current_slot]
|
|
; Atomically increment depth of critical areas and get the old value.
|
|
mov eax, 1
|
|
lock xadd [edx+APPDATA.terminate_protection], eax
|
|
; If the old value was zero, somebody has started to terminate us,
|
|
; so we are destructing and cannot do anything protected.
|
|
; Otherwise, return to the caller.
|
|
test eax, eax
|
|
jz @f
|
|
ret
|
|
@@:
|
|
; Wait for somebody to finish us.
|
|
call change_task
|
|
jmp @b
|
|
endp
|
|
|
|
; Leave critical area. Called by thread which wants to be protected.
|
|
proc unprotect_from_terminate
|
|
mov edx, [current_slot]
|
|
; Atomically decrement depth of critical areas.
|
|
lock dec [edx+APPDATA.terminate_protection]
|
|
; If the result of decrement is zero, somebody has requested termination,
|
|
; but at that moment we were inside a critical area; terminate now.
|
|
jz sys_end
|
|
; Otherwise, return to the caller.
|
|
ret
|
|
endp
|
|
|
|
; Request termination of thread identified by edx = SLOT_BASE + slot*sizeof.APPDATA.
|
|
; Called by anyone.
|
|
proc request_terminate
|
|
xor eax, eax ; set return value
|
|
; Atomically clear the upper bit. If it was already zero, then
|
|
; somebody has requested termination before us, so just exit.
|
|
lock btr [edx+APPDATA.terminate_protection], 31
|
|
jnc .unsafe
|
|
; Atomically decrement depth of critical areas.
|
|
lock dec [edx+APPDATA.terminate_protection]
|
|
; If the result of decrement is nonzero, the target thread is inside a
|
|
; critical area; leave termination to leaving that area.
|
|
jnz .unsafe
|
|
; Otherwise, it is safe to kill the target now and the caller is responsible
|
|
; for this. Return eax=1.
|
|
inc eax
|
|
.unsafe:
|
|
ret
|
|
endp
|
|
|