//
// On non-Linux ARM, the 64-bit functions use instructions unavailable before the ARMv6k core.
//
-// On ARM, 386, and 32-bit MIPS, it is the caller's responsibility
-// to arrange for 64-bit alignment of 64-bit words accessed atomically.
+// On ARM, 386, and 32-bit MIPS, it is the caller's responsibility to arrange
+// for 64-bit alignment of 64-bit words accessed atomically via the primitive
+// atomic functions (types Int64 and Uint64 are automatically aligned).
// The first word in a variable or in an allocated struct, array, or slice can
// be relied upon to be 64-bit aligned.