.TRAP - define offsets into trap blocks.

Usage:

.trap

Description:

Defines offsets into trap block:

T.CALL  -3  trap block's copy of S.RET
T.FWD   -3  pointer to real return address (or next trap)
T.FUNC  -2  trap block's function pointer
T.BWD   -2  address of stack address (or previous trap)
T.STK   -1  pointer to stack frame linked to
T.SIZE  -1  user supplied size
T.NUM    3  number of control words