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Syntax
PATCH
RUN PATCH.PUB.SYS
Operation
Use PATCH to access, display, and/or modify a program file's
object code without recompiling the program. You can make simple
changes to program instructions or to global stack area variables
on compatibility mode programs.
PATCH requires the memory location of the target program
symbols, the beginning locations of each program unit, and the offsets
for each line of code from these locations. This data may be gathered
in a number of ways depending on the source language of the program.
PATCH supports four subcommands (D, M, DG, and MG) to display
the code segment contents, to modify the code segment contents, to display the
global area of the initial stack, and to modify the global area of the initial
stack. PATCH can bypass normal MPE/iX safeguards and modify
the contents of privileged program files.
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CAUTION: PATCH bypasses normal MPE/iX safeguards and modifies
the contents of privileged program files. It is, therefore,
possible to corrupt system file(s) or the entire operating system.
Hewlett-Packard is not responsible for modifications that you
make to the operating system or system files. For more information, contact
your Hewlett-Packard service representative.
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Additional Discussion
For more information, refer to Chapter 18 "PATCH".
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