//IDLE 쓰레드의 핸들러 함수
//계속해서 태스크 스위칭(HalTaskSwitch)을 시도
static DWORD PspIdleThread(PVOID StartContext)
{
while(1) {
HalTaskSwitch();
}
return 0;
}
//키보드로부터 입력받은 데이터를 가공하는 함수(raw_keydata_q -> user_keydata_q)
static DWORD KbdpTranslatorThread(PVOID StartContext)
{
KBD_KEY_DATA key_data;
BYTE raw_key, indicator, key_family;
while(1) {
if(!KbdpPopRawKeyData(&(m_KbdData.raw_keydata_q), &raw_key)){
HalTaskSwitch();
continue;
}
if(raw_key & 0x80) {
if(raw_key == 0xaa || raw_key == 0xb6)
m_KbdData.shift_key_pressed = FALSE;
else if(raw_key == 0xb8)
m_KbdData.alt_key_pressed = FALSE;
else if(raw_key == 0x9d)
m_KbdData.ctrl_key_pressed = FALSE;
continue;
}
if(raw_key == 0x45) {
indicator = KBD_LED_NUMLOCK;
goto $reset;
} else if (raw_key == 0x3a) {
indicator = KBD_LED_CAPSLOCK;
goto $reset;
} else if(raw_key == 0x46) {
indicator = KBD_LED_SCROLLLOCK;
$reset:
if(m_KbdData.indicator_status & indicator) {
m_KbdData.indicator_status &= (~indicator);
} else {
m_KbdData.indicator_status |= indicator;
}
KbdpResetIndicator();
continue;
}
if(raw_key == 0x2a || raw_key == 0x36) {
m_KbdData.shift_key_pressed = TRUE;
} else if(raw_key == 0x1d) {
m_KbdData.ctrl_key_pressed = TRUE;
} else if(raw_key == 0x38) {
m_KbdData.alt_key_pressed = TRUE;
}
key_family = KBD_ASCII_ORG;
key_family |= (m_KbdData.shift_key_pressed ? KBD_ASCII_WITH_SHIFT : 0);
key_family |= (m_KbdData.indicator_status&KBD_LED_CAPSLOCK ? KBD_ASCII_WITH_CAPSLOCK : 0);
key_data.type = KBD_KTYPE_GENERAL;
key_data.key = m_AsciiCode[key_family][raw_key];
KbdpPushUserKeyData(&(m_KbdData.user_keydata_q), &key_data);
}
return 0;
}
static DWORD PspThreadCutterThread(PVOID StartContext)
{
HANDLE ProcessHandle, ThreadHandle;
PTHREAD_CONTROL_BLOCK *pt_prev_thread, *pt_cur_thread;
while(1) {
/* check thread cutting list */
if(!PspPopCuttingItem(&m_ThreadCuttingList, &ThreadHandle)) {
HalTaskSwitch();
continue;
}
ENTER_CRITICAL_SECTION();
ProcessHandle = PsGetThreadPtr(ThreadHandle)->parent_process_handle;
/* if requsted thread's parent process handle is same with system process handle, then do nothing!! protect system thread */
if(ProcessHandle == PsGetThreadPtr(PsGetCurrentThread())->parent_process_handle) {
goto $exit;
}
/* invalid thread */
if(PsGetProcessPtr(ProcessHandle)->thread_count == 0) {
goto $exit;
}
/* check whether there is only one thread exist in the parent process */
else if(PsGetProcessPtr(ProcessHandle)->thread_count == 1) {
PsGetProcessPtr(ProcessHandle)->pt_head_thread = NULL;
}
/* more than 2 threads exist */
else {
pt_prev_thread = pt_cur_thread = &(PsGetProcessPtr(ProcessHandle)->pt_head_thread);
while(*pt_cur_thread != PsGetThreadPtr(ThreadHandle)) {
/* there is no requested thread in the parent process */
if((*pt_cur_thread)->pt_next_thread == NULL) {
goto $exit;
}
pt_prev_thread = pt_cur_thread;
pt_cur_thread = &((*pt_cur_thread)->pt_next_thread);
}
/* change next thread pointer */
(*pt_prev_thread)->pt_next_thread = (*pt_cur_thread)->pt_next_thread;
}
PsGetProcessPtr(ProcessHandle)->thread_count--;
/* except user mode program's stack */
if(PsGetThreadPtr(ThreadHandle)->pt_stack_base_address >= (int *)0x00200000)
MmFreeNonCachedMemory((PVOID)(PsGetThreadPtr(ThreadHandle)->pt_stack_base_address)); /* dealloc stack */
MmFreeNonCachedMemory((PVOID)(PsGetThreadPtr(ThreadHandle))); /* dealloc thread */
$exit:
EXIT_CRITICAL_SECTION();
}
return 0;
}
static DWORD PspProcessCutterThread(PVOID StartContext)
{
HANDLE ProcessHandle;
PPROCESS_CONTROL_BLOCK *pt_prev_process, *pt_cur_process;
PTHREAD_CONTROL_BLOCK *pt_cur_thread;
while(1) {
/* check process cutting list */
if(!PspPopCuttingItem(&m_ProcessCuttingList, &ProcessHandle)) {
HalTaskSwitch();
continue;
}
ENTER_CRITICAL_SECTION();
/* if requsted process handle is same with system process handle, then do nothing!! protect system process */
if(ProcessHandle == PsGetThreadPtr(PsGetCurrentThread())->parent_process_handle) {
goto $exit;
}
/* find requested process position in the process list */
pt_prev_process = pt_cur_process = &(m_ProcMgrBlk.pt_head_process);
while(*pt_cur_process != PsGetProcessPtr(ProcessHandle)) {
/* there is no requested process in the list */
if((*pt_cur_process)->pt_next_process == NULL) {
goto $exit;
}
pt_prev_process = pt_cur_process;
pt_cur_process = &((*pt_cur_process)->pt_next_process);
}
/* change next process pointer */
(*pt_prev_process)->pt_next_process = (*pt_cur_process)->pt_next_process;
m_ProcMgrBlk.process_count--;
/* dealloc all threads belonged to the requested process */
pt_cur_thread = &(PsGetProcessPtr(ProcessHandle)->pt_head_thread);
while(*pt_cur_thread != NULL) {
MmFreeNonCachedMemory((PVOID)((*pt_cur_thread)->pt_stack_base_address));
MmFreeNonCachedMemory((PVOID)(*pt_cur_thread));
pt_cur_thread = &((*pt_cur_thread)->pt_next_thread);
}
/* dealloc the requested process memory */
MmFreeNonCachedMemory((PVOID)ProcessHandle);
$exit:
EXIT_CRITICAL_SECTION();
}
return 0;
}
//Init 쓰레드의 핸들러 함수
static void PspTaskEntryPoint(void)
{
PKSTART_ROUTINE start_routine;
HANDLE current_thread;
DWORD ret_value;
current_thread = PsGetCurrentThread();
start_routine = PsGetThreadPtr(current_thread)->start_routine;
ret_value = start_routine(PsGetThreadPtr(current_thread)->start_context);
PsGetThreadPtr(current_thread)->thread_status = THREAD_STATUS_TERMINATED;
HalTaskSwitch();
while(1) ;
}
/**********************************************************************************************************
* JOB_ITEM & THREAD *
**********************************************************************************************************/
static DWORD FddpJobProcessThread(PVOID StartContext)
{
FDD_JOB_ITEM job_item;
while(1) {
if(!FddpPopJobItem(&job_item)) {
HalTaskSwitch();
continue;
}
FddpReadWriteSector(job_item.type, job_item.sector, job_item.numbers_of_sectors, job_item.pt_data);
PsSetThreadStatus(job_item.thread, THREAD_STATUS_READY);
}
return 0;
}
//종료된 쓰레드의 삭제
static DWORD PspThreadCutterThread(PVOID StartContext)
{
HANDLE ProcessHandle, ThreadHandle;
PTHREAD_CONTROL_BLOCK *pt_prev_thread, *pt_cur_thread;
while(1) {
if(!PspPopCuttingItem(&m_ThreadCuttingList, &ThreadHandle)) {
HalTaskSwitch();
continue;
}
ENTER_CRITICAL_SECTION();
ProcessHandle = PsGetThreadPtr(ThreadHandle)->parent_process_handle;
if(ProcessHandle == PsGetThreadPtr(PsGetCurrentThread())->parent_process_handle) {
goto $exit;
}
if(PsGetProcessPtr(ProcessHandle)->thread_count == 0) {
goto $exit;
}
else if(PsGetProcessPtr(ProcessHandle)->thread_count == 1) {
PsGetProcessPtr(ProcessHandle)->pt_head_thread = NULL;
}
else {
pt_prev_thread = pt_cur_thread = &(PsGetProcessPtr(ProcessHandle)->pt_head_thread);
while(*pt_cur_thread != PsGetThreadPtr(ThreadHandle)) {
if((*pt_cur_thread)->pt_next_thread == NULL) {
goto $exit;
}
pt_prev_thread = pt_cur_thread;
pt_cur_thread = &((*pt_cur_thread)->pt_next_thread);
}
(*pt_prev_thread)->pt_next_thread = (*pt_cur_thread)->pt_next_thread;
}
PsGetProcessPtr(ProcessHandle)->thread_count--;
if(PsGetThreadPtr(ThreadHandle)->pt_stack_base_address >= (int *)0x00200000)
MmFreeNonCachedMemory((PVOID)(PsGetThreadPtr(ThreadHandle)->pt_stack_base_address));
MmFreeNonCachedMemory((PVOID)(PsGetThreadPtr(ThreadHandle)));
$exit:
EXIT_CRITICAL_SECTION();
}
}
//종료된 프로세스의 삭제
static DWORD PspProcessCutterThread(PVOID StartContext)
{
HANDLE ProcessHandle;
PPROCESS_CONTROL_BLOCK *pt_prev_process, *pt_cur_process;
PTHREAD_CONTROL_BLOCK *pt_cur_thread;
while(1) {
if(!PspPopCuttingItem(&m_ProcessCuttingList, &ProcessHandle)) {
HalTaskSwitch();
continue;
}
ENTER_CRITICAL_SECTION();
if(ProcessHandle == PsGetThreadPtr(PsGetCurrentThread())->parent_process_handle) {
goto $exit;
}
pt_prev_process = pt_cur_process = &(m_ProcMgrBlk.pt_head_process);
while(*pt_cur_process != PsGetProcessPtr(ProcessHandle)) {
if((*pt_cur_process)->pt_next_process == NULL) {
goto $exit;
}
pt_prev_process = pt_cur_process;
pt_cur_process = &((*pt_cur_process)->pt_next_process);
}
(*pt_prev_process)->pt_next_process = (*pt_cur_process)->pt_next_process;
m_ProcMgrBlk.process_count--;
pt_cur_thread = &(PsGetProcessPtr(ProcessHandle)->pt_head_thread);
while(*pt_cur_thread != NULL) {
MmFreeNonCachedMemory((PVOID)((*pt_cur_thread)->pt_stack_base_address));
MmFreeNonCachedMemory((PVOID)(*pt_cur_thread));
pt_cur_thread = &((*pt_cur_thread)->pt_next_thread);
}
MmFreeNonCachedMemory((PVOID)ProcessHandle);
$exit:
EXIT_CRITICAL_SECTION();
}
return 0;
}
/*
* LED ASSOCIATED KEYs *
45-c5 : num-lock
3a-ba : capslock
46-c6 : scroll-lock
* MAIN KEYs (LEFT-SIDED AREA) *
2a-aa : left-shift
36-b6 : right-shift
1d-9d : left-ctrl
e0-1d-e0-9d : right-ctrl
38-b8 : left-alt
e0-38-e0-b8 : right-alt
1c-9c : enter
e-8e : back-space
f-8f : tab
e0-71-e0-f1 : chinese
e0-5c-e0-dc : right-windows-key
e0-72 : kor/eng
1-81 : esc
3b-bb : f1
3c-bc : f2
3d-bd : f3
3e-be : f4
3f-bf : f5
40-c0 : f6
41-c1 : f7
42-c2 : f8
43-c3 : f9
44-c4 : f10
57-d7 : f11
58-d8 : f12
* MIDDLE SIDE *
e0-2a-e0-37-e0-b7-e0-aa : print screen
e1-1d-45-e1-9d-c5 : pause
e0-2a-e0-52-e0-d2-e0-aa : insert
e0-2a-e0-47-e0-c7-e0-aa : home
e0-2a-e0-49-e0-c9-e0-aa : page up
e0-2a-e0-53-e0-d3-e0-aa : delete
e0-2a-e0-4f-e0-cf-e0-aa : end
e0-2a-e0-51-e0-d1-e0-aa : page down
e0-2a-e0-48-e0-c8-e0-aa : up arrow
e0-2a-e0-50-e0-d0-e0-aa : down arrow
e0-2a-e0-4b-e0-cb-e0-aa : left arrow
e0-2a-e0-4d-e0-cd-e0-aa : right arrow
* NUM PAD *
e0-35-e0-b5 : /
37-b7 : *
4a-ca : -
4e-ce : +
e0-1c-e0-9c : enter
53-d3 : . (or Del)
52-d2 : 0 (or Ins)
4f-cf : 1
50-d0 : 2
51-d1 : 3
4b-cb : 4
4c-cc : 5
4d-cd : 6
47-c7 : 7
48-c8 : 8
c9-49 : 9
e0-21-e0-a1 : calculator
e0-18-e0-98 : X'fer
*/
static DWORD KbdpTranslatorThread(PVOID StartContext)
{
KBD_KEY_DATA key_data;
BYTE raw_key, indicator, key_family;
while(1) {
if(!KbdpPopRawKeyData(&(m_KbdData.raw_keydata_q), &raw_key)) {
HalTaskSwitch(); /* if there is no remained job to do, then call task-swithing task in order to run other taks. */
continue;
}
/* is this special key or function key started with '0xe0'? */
/* do something */
/* dont process such "break key" */
if(raw_key & 0x80) {
if(raw_key == 0xaa || raw_key == 0xb6) /* shift key breaked */
m_KbdData.shift_key_pressed = FALSE;
else if(raw_key == 0xb8) /* alt key breaked */
m_KbdData.alt_key_pressed = FALSE;
else if(raw_key == 0x9d) /* alt key breaked */
m_KbdData.ctrl_key_pressed = FALSE;
continue;
}
/* RESET INDICATORs */
if(raw_key == 0x45) { /* num lock */
indicator = KBD_LED_NUMLOCK;
goto $reset_indicator;
} else if(raw_key == 0x3a) { /* capslock */
indicator = KBD_LED_CAPSLOCK;
goto $reset_indicator;
} else if(raw_key == 0x46) { /* scroll lock */
indicator = KBD_LED_SCROLLLOCK;
$reset_indicator:
if(m_KbdData.indicator_status & indicator) {
m_KbdData.indicator_status &= (~indicator);
} else {
m_KbdData.indicator_status |= indicator;
}
KbdpResetIndicator();
continue;
}
/* SHIFT, ALT, CTRL */
if(raw_key == 0x2a || raw_key == 0x36) { /* shift */
m_KbdData.shift_key_pressed = TRUE; continue;
} else if(raw_key == 0x1d) {
m_KbdData.ctrl_key_pressed = TRUE; continue;
} else if(raw_key == 0x38) {
m_KbdData.alt_key_pressed = TRUE; continue;
}
/* GENERAL KEYs */
key_family = KBD_ASCII_ORG;
key_family |= (m_KbdData.shift_key_pressed ? KBD_ASCII_WITH_SHIFT : 0);
key_family |= (m_KbdData.indicator_status&KBD_LED_CAPSLOCK ? KBD_ASCII_WITH_CAPSLOCK : 0);
key_data.type = KBD_KTYPE_GENERAL;
key_data.key = m_AsciiCode[key_family][raw_key];
KbdpPushUserKeyData(&(m_KbdData.user_keydata_q), &key_data);
}
return 0;
}
