kaguya
24 lines
475 B
C++
24 lines
475 B
C++
#pragma once
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#include <stdint.h>
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#include <mlibc/tcb.hpp>
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#include <bits/ensure.h>
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namespace mlibc {
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inline Tcb *get_current_tcb() {
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// On LoongArch, the TCB is below the thread pointer.
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uintptr_t tp = (uintptr_t)__builtin_thread_pointer();
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auto tcb = reinterpret_cast<Tcb *>(tp - sizeof(Tcb));
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__ensure(tcb == tcb->selfPointer);
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return tcb;
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}
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inline uintptr_t get_sp() {
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uintptr_t sp;
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asm volatile ("move %0, $sp" : "=r"(sp));
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return sp;
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}
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} // namespace mlibc
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