Method setupStack

source/kernel/kthread.cpp:82–93

}

void KThread::setupStack() {  
    U32 stack = memory->mmap(this, 0, MAX_STACK_SIZE, K_PROT_NONE, K_MAP_ANONYMOUS|K_MAP_PRIVATE, -1, 0);
    // will all by on demand
    memory->mprotect(this, stack + K_PAGE_SIZE, MAX_STACK_SIZE - 2 * K_PAGE_SIZE, K_PROT_READ | K_PROT_WRITE);    
    U32 stackPageCount = MAX_STACK_SIZE >> K_PAGE_SHIFT;
    U32 stackPageStart = stack >> K_PAGE_SHIFT;
    this->cpu->reg[4].u32 = (stackPageStart + stackPageCount - 1) << K_PAGE_SHIFT;  
    // touch the first 16 pages now so that they are ready
    for (int i = 1; i < 17; i++) {
        memory->readd(this->cpu->reg[4].u32 - K_PAGE_SIZE * i);
    }
}

KThread::KThread(U32 id, const KProcessPtr& process) : 
    id(id),