HP 3000 Manuals HP 3000 Manuals
PATCH
Syntax
PATCH
or
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.
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.
Additional Discussion
For more information, refer to Chapter 18 .