26 lines
424 B
NASM
26 lines
424 B
NASM
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global spinlock_lock_acquire
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spinlock_lock_acquire:
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lock bts qword [rdi], 0
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jc .spin
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ret
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.spin:
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pause
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test qword [rdi], 1
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jnz .spin
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jmp spinlock_lock_acquire
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global spinlock_lock_release
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spinlock_lock_release:
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mov qword [rdi], 0
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ret
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global spinlock_lock_is_locked
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spinlock_lock_is_locked:
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cmp qword [rdi], 0
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je .free
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.locked:
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mov rax, 1
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ret
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.free:
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mov rax, 0
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ret
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