libc/atomic: refactor inline arch atomics, add atomic_ptr_t/atomic64/cmpxchg_release_acquire - #20043

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zhangyu-duck:atomic_part2

Commits on Aug 31, 2026

include/atomic: add atomic_ptr_t type and operations

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6319a56

Commits on Sep 2, 2026

libc/atomic: support inline arch atomic for tricore

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1311d12

Commits on Sep 3, 2026

libc/atomic: support inline arch atomic for generic IRQ path

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ec557ba
libc/atomic: merge tricore arch_atomic.c into machine/arch_atomic.c

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f1f46f0
include/atomic: add cmpxchg_release_acquire memory order variant

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5c36cc3
libc: realize atomic64 via a spinlock helper
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2802f3b