STACK_ALIGN64
#define SA64(x) (((x)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1))
#define STACK_ALIGN STACK_ALIGN64
#define SA64(X) (((X)+(STACK_ALIGN64-1)) & ~(STACK_ALIGN64-1))
(STACK_ALIGN64-1)) == 0)
#define STACK_ALIGN STACK_ALIGN64
stack_align = STACK_ALIGN64;