STKB
add %fp, STKB-FS_SIZE, %l0; /* Allocate a fpstate */\
add %l0, -STKB-CC64FSZ-(siz), %sp; /* Set proper %sp */ \
set EINTSTACK-STKB, %l4; /* Are we on intr stack? */ \
set INTSTACK-STKB, %l4; \