NOP Decompiler Product Description
computer program stores the same information in two different
computer languages. The first is called the source language
and consists of English-like instructions which can be understood
by humans. If a programmer wishes to change the task which
a program is to perform s/he changes the instructions contained
in the source. However, these instructions cannot be understood
by the computer. The computer can only process instructions
written in machine language. In order to run the program,
the source instructions must be run through a language translator
called a compiler. The compiler creates a new version of
the program, one written in machine language. In other words,
the compiler translates programs written in a language understandable
by humans into a language understood by the computer.
As long as the machine language version of the program exists
on the computer system, the program can be run, and as long
as the source language version exists on the system, the
program can be modified, enhanced or debugged by the programmer.
If the machine language version is accidentally destroyed,
the source can be run through the computer again, and a
new machine instruction version is generated. But, if the
source is accidentally destroyed, it can only be reached
by the use of a decompiler, a programmer's tool which reverses
the process of the original compiler.
AS/400 ENVIRONMENT: The SSTG utility will run on all
models of the AS/400 system. Version 3 Release 1 or above
of OS/400 is required.
SSTG NOP generates new RPG source members from compiled RPG
program objects which have had observability removed. The
new source members are Functionally Equivalent to the original
source members. CLICK HERE for an EXAMPLE of FUNCTIONAL EQUIVALENCE
Current benchmarks put the time required to decompile a
program at approximately three times (3x) longer than the
time required to compile the source program. That is, a
program which would take 1 minute to compile would take
3 minutes to decompile.
user programmer productivity in several problem solving
which of several source members corresponds to currently
running object programs.
modifications in current object missing from current
Best Price/Performance for Recreating Existing Code.
Migration to New Platforms.
Investment in Existing Software for Which Source is
copy of SSTG NOP is tied to a particular CPU via the systems
unique serial number to prevent unauthorized duplication
of the software. In order to decompile a program object,
the user must have *ALLOBJ authority over the object to
be restored and *CHANGE authority to the source physical
file where the new member is to reside.
NOP currently supports decompilation of program objects
compiled under CPF rel 8 through OS/400 V5R2 for those objects
which have had observability removed.