static BOOL PspCreateSystemProcess(void)
{
HANDLE process_handle;
HANDLE init_thread_handle, idle_thread_handle, process_cutter_handle, thread_cutter_handle;
HANDLE tmr_thread_handle, sw_task_sw_handle;
if(!PsCreateProcess(&process_handle))
return FALSE;
/* create init_thread. */
if(!PsCreateThread(&init_thread_handle, process_handle, NULL, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
HalSetupTaskLink(&PsGetThreadPtr(init_thread_handle)->thread_tss32, TASK_SW_SEG);
HalWriteTssIntoGdt(&PsGetThreadPtr(init_thread_handle)->thread_tss32, sizeof(TSS_32), INIT_TSS_SEG, FALSE);
_asm {
push ax
mov ax, INIT_TSS_SEG
ltr ax
pop ax
}
/* create tmr_int_handler_thread. */
if(!PsCreateIntThread(&tmr_thread_handle, process_handle, Psp_IRQ_SystemTimer, NULL, DEFAULT_STACK_SIZE))
return FALSE;
HalWriteTssIntoGdt(&PsGetThreadPtr(tmr_thread_handle)->thread_tss32, sizeof(TSS_32), TMR_TSS_SEG, FALSE);
/* create soft-task-switching thread */
if(!PsCreateIntThread(&sw_task_sw_handle, process_handle, PspSoftTaskSW, NULL, DEFAULT_STACK_SIZE))
return FALSE;
HalWriteTssIntoGdt(&PsGetThreadPtr(sw_task_sw_handle)->thread_tss32, sizeof(TSS_32), SOFT_TS_TSS_SEG, FALSE);
/* create idle_thread. */
if(!PsCreateThread(&idle_thread_handle, process_handle, PspIdleThread, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
PsSetThreadStatus(idle_thread_handle, THREAD_STATUS_RUNNING);
HalWriteTssIntoGdt(&PsGetThreadPtr(idle_thread_handle)->thread_tss32, sizeof(TSS_32), TASK_SW_SEG,
TRUE); /* LAST PARAMETER SHOULD BE SET WITH 'TRUE'. IMPORTANT!! */
m_ProcMgrBlk.pt_current_thread = idle_thread_handle; /* IMPORTANT!! */
/* process cutter & thread cutter */
if(!PsCreateThread(&process_cutter_handle, process_handle, PspProcessCutterThread, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
PsSetThreadStatus(process_cutter_handle, THREAD_STATUS_READY);
if(!PsCreateThread(&thread_cutter_handle, process_handle, PspThreadCutterThread, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
PsSetThreadStatus(thread_cutter_handle, THREAD_STATUS_READY);
return TRUE;
}
//초기 프로세스와 쓰레드의 생성과 설정
static BOOL PspCreateSystemProcess(void)
{
HANDLE process_handle;
HANDLE init_thread_handle, idle_thread_handle, process_cutter_handle, thread_cutter_handle;
HANDLE tmr_thread_handle, sw_task_sw_handle;
//메인 프로세스를 생성해주는 PSCreateProcess 함수 호출
if(!PsCreateProcess(&process_handle))
return FALSE;
//프로세스를 생성하기 위해 베이스가 될 메인 쓰레드(init 쓰레드) 생성
if(!PsCreateThread(&init_thread_handle, process_handle, NULL, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
//초기 쓰레드의 백링크(Prev-Link) 설정
HalSetupTaskLink(&PsGetThreadPtr(init_thread_handle)->thread_tss32, TASK_SW_SEG);
//초기 쓰레드의 TSS를 GDT내에 설정
HalWriteTssIntoGdt(&PsGetThreadPtr(init_thread_handle)->thread_tss32, sizeof(TSS_32), INIT_TSS_SEG, FALSE);
_asm {
push ax
mov ax, INIT_TSS_SEG
ltr ax
pop ax
}
if(!PsCreateIntThread(&tmr_thread_handle, process_handle, Psp_IRQ_SystemTimer, NULL, DEFAULT_STACK_SIZE))
return FALSE;
HalWriteTssIntoGdt(&PsGetThreadPtr(tmr_thread_handle)->thread_tss32, sizeof(TSS_32), TMR_TSS_SEG, FALSE);
if(!PsCreateIntThread(&sw_task_sw_handle, process_handle, PspSoftTaskSW, NULL, DEFAULT_STACK_SIZE))
return FALSE;
HalWriteTssIntoGdt(&PsGetThreadPtr(sw_task_sw_handle)->thread_tss32, sizeof(TSS_32), SOFT_TS_TSS_SEG, FALSE);
if(!PsCreateThread(&idle_thread_handle, process_handle, PspIdleThread, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
PsSetThreadStatus(idle_thread_handle, THREAD_STATUS_RUNNING);
HalWriteTssIntoGdt(&PsGetThreadPtr(idle_thread_handle)->thread_tss32, sizeof(TSS_32), TASK_SW_SEG,
TRUE);
m_ProcMgrBlk.pt_current_thread = idle_thread_handle;
if(!PsCreateThread(&process_cutter_handle, process_handle, PspProcessCutterThread, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
PsSetThreadStatus(process_cutter_handle, THREAD_STATUS_READY);
if(!PsCreateThread(&thread_cutter_handle, process_handle, PspThreadCutterThread, NULL, DEFAULT_STACK_SIZE, FALSE))
return FALSE;
PsSetThreadStatus(thread_cutter_handle, THREAD_STATUS_READY);
return TRUE;
}