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[kernel] Stop creating user stacks in the kernel

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Stop creating stacks in user space for user threads, that should be done
by the thread's creator. This change adds process and stack_top
arguments to the thread_create syscall, so that threads can be created
in other processes, and given a stack address.

Also included is a fix in add_thunk_user due to the r11/flags change.

THIS COMMIT BREAKS USERSPACE. See subsequent commits for the user side
changes related to this change.
This commit is contained in:
Justin C. Miller
2021-12-26 15:36:59 -08:00
parent cade24a7ce
commit 300bf9c2c5
6 changed files with 24 additions and 27 deletions
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2
src/kernel/scheduler.cpp
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@@ -70,7 +70,7 @@ inline T * push(uintptr_t &rsp, size_t size = sizeof(T)) {
void
scheduler::create_kernel_task(void (*task)(), uint8_t priority, bool constant)
{
thread *th = process::kernel_process().create_thread(priority, false);
thread *th = process::kernel_process().create_thread(0, priority);
auto *tcb = th->tcb();
th->add_thunk_kernel(reinterpret_cast<uintptr_t>(task));