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Process/Syscall matrix
======================
System calls in this system:
process management: exit, waitpid, fork, exec, kill
i/o: read write
information: getpid getppid gettime getprio
other: sleep, setprio
There is also a "bogus" system call which attempts to use an invalid
system call code; this should be caught by the syscall handler and
the process should be terminated.
These are the system calls which are used in each of the user-level
main functions. Some main functions only invoke certain system calls
when given specific command-line arguments.
Note that some system calls are nested inside library functions - e.g.,
cwrite*() and swrite*() perform write(), etc.
progABC runs for userA, userB, and userC
progDE runs for userD and userE
progFG runs for userF and userG
progKL runs for userK and userL
progMN runs for userM and userN
progTUV runs for userT, userU, and userV
all others run individual main functions
baseline system calls in use
prog ext wtp for exe rea wrt gpi gpp gti kil slp gtp stp bog
----- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
init . X . . . X . . . . . . . .
idle X . . . . X X . X . . X X .
shell X X X X X X . . . . . . . .
----- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
abc X . . . . X . . . . . . . .
de . . . . . X . . . . . . . .
fg X . . . . X . . . . X . . .
h X . X X . X . . . . X . . .
i X X X X . X . . . X X . . .
j X . X X . X . . . . . . . .
kl X . X X . X . . . . X . . .
mn X . X X . X . . . . . . . .
p X . . . . X . . X . X . . .
q X . . . . X . . . . . . . X
r X . X . . X X X . . X . . .
s X . . . . X . . . . X . . .
tuv X X X X . X . . . X X . . .
w X . . . . X X . X . X . . .
x X . . . . X . . . . . . . .
y X . . . . X X . . . X . . .
z X . . . . X X . . . X . . .
...........................................................................
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