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#pragma once
#include <stdint.h>
#include <mlibc/tcb.hpp>
#include <bits/ensure.h>
namespace mlibc {
inline Tcb *get_current_tcb() {
// On RISC-V, the TCB is below the thread pointer.
uintptr_t tp = (uintptr_t)__builtin_thread_pointer();
auto tcb = reinterpret_cast<Tcb *>(tp - sizeof(Tcb));
__ensure(tcb == tcb->selfPointer);
return tcb;
}
inline uintptr_t get_sp() {
uintptr_t sp;
asm ("mv %0, sp" : "=r"(sp));
return sp;
}
} // namespace mlibc
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