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This stuff goes into the Process Table of a proc. (ie. LDT entry 0):

Len     What it is

 2      PID

 1      Priority Counter

 1      Actual priority byte

 4      Pending Signal Bits

            31............16............9 8 7 6 5 4 3 2 1 0

                                        | | | | | | | | | |__ KILL (suggestive)

                                        | | | | | | | | |__ KILL (hard)

                                        | | | | | | | |__ SUSPEND

                                        | | | | | | |__ CONTINUE

                                        | | | | | |__ ALARM

                                        | | | | |__ PROCESS ALARM

                                        | | | |__ KEY

                                        | | |__ Out-of-band Data

                                        | |__ Connection Snap

                                        |__ Window Size Change

 4      Time when proc. was started (not used right now)

 1      TTY on which this proc. was started

 1      Interrupt hooked

 40     Offsets for each signal handler

 2      JUMP FIELD - PID of proc. to jump to when finished (for interrupt chaining)

 1      Flag for redirected I/O

                                       7 6 5 4 3 2 1 0

         whether proc. is background __| |         | |_ STDOUT redirected

         or not (1=yes)                  |         |__ STDIN redirected

         whether proc. has used FPU or __|

         not (1=yes)

 32      Space for swap offset data for each of 8 possible segments (except CS).

 16      Pushed CS/EIP entries from CALL() system calls (could be an unending chain)