17 lines
241 B
ArmAsm
17 lines
241 B
ArmAsm
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.global spinlock_lock_asm
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spinlock_lock_asm:
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lock; btsq $0, (%rdi)
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jnc .done
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.retry:
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pause
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testq $1, (%rdi)
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jne .retry
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lock; btsq $0, (%rdi)
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jc .retry
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.done:
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ret
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.global spinlock_unlock_asm
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spinlock_unlock_asm:
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movq $0, (%rdi)
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ret
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