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add a class to allocate and manage user space stacks

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This commit is contained in:
Drew Galbraith 2023-05-30 22:35:57 -07:00
parent 1db93e5b12
commit 2eefda6114
6 changed files with 67 additions and 7 deletions
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4
zion/scheduler/thread.cpp
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@ -26,7 +26,6 @@ SharedPtr<Thread> Thread::RootThread(Process& root_proc) {
Thread::Thread(Process& proc, uint64_t tid, uint64_t entry)
: process_(proc), id_(tid), rip_(entry) {
uint64_t* stack_ptr = proc.vmm().AllocateKernelStack();
dbgln("Kernel Stack at: %m", stack_ptr);
// 0: rip
*(stack_ptr) = reinterpret_cast<uint64_t>(thread_init);
// 1-4: rax, rcx, rdx, rbx
@ -43,8 +42,7 @@ uint64_t Thread::pid() const { return process_.id(); }
void Thread::Init() {
dbgln("[%u.%u] thread start.", pid(), id_);
uint64_t rsp = 0x80000000;
EnsureResident(rsp - 1, 1);
uint64_t rsp = process_.vmm().AllocateUserStack();
SetRsp0(rsp0_start_);
jump_user_space(rip_, rsp);
}