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zhangyu117 2f46ced5c7 libc/machine: split atomic into header, arch_atomic_irq.c, arch_atomic64.c 
Split the atomic implementation into three files:
- arch_atomic.h: Shared macros (STORE, LOAD, etc.) using atomic_lock()/
  atomic_unlock() abstraction
- arch_atomic_irq.c: 32-bit atomic functions using IRQ disable (conditional
  on CONFIG_LIBC_ATOMIC_IRQ via Make.defs)
- arch_atomic64.c: 64-bit atomic functions using spinlock (always compiled,
  multi-core safe). The __atomic_* functions are always provided (GCC
  runtime helpers), while nx_atomic_* functions are conditional on
  !CONFIG_LIBC_ATOMIC_TOOLCHAIN.

Signed-off-by: zhangyu117 <zhangyu117@xiaomi.com>
2026-08-24 13:20:45 +08:00
..
libbuiltin !sched/arch/libc: Give fork() and vfork() their real, separate semantics. 2026-08-10 08:57:30 -03:00
libc libc/machine: split atomic into header, arch_atomic_irq.c, arch_atomic64.c 2026-08-24 13:20:45 +08:00
libdsp tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
libm cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
libnx tools: fix stale archive members surviving a Kconfig-driven CSRCS change 2026-07-28 21:26:03 -03:00
libxx cmake: Use NUTTX(_DIR/_BIN_DIR) instead CMAKE(_SRC_DIR/_BIN_DIR) 2026-08-09 11:13:08 -03:00
CMakeLists.txt libs: migrate to SPDX identifier 2024-10-01 12:25:52 +08:00