HP Integrity NonStop H-Series - Manual (Page 50)

Glossary
TNSVU User’s Guide— 528143-003
Glossary- 2
AXCEL
AXCEL. The command used to invoke the Accelerator on a TNS/R or TNS/E system.
Binder. A programming utility that combines one or more compilation units’ TNS object
code files to create an executable TNS object code file for a TNS program or library.
Used only with
TNS object file s.
Binder region. The region of a TNS object file that contains header tables for use by the
Binder program.
binding. The operation of collecting, connecting, and relocating code and data blocks from
one or more separately compiled TNS object files to produce a target object file.
breakpoint. An object code location at which execution will be suspended so that you can
interactively examine and modify the process state. With symbolic debuggers,
breakpoints are usually at source line or statement boundaries.
In TNS/R or TNS/E native object code, breakpoints can be at any MIPS RISC
instruction or Intel® Itanium®
instruction within a statement. In a TNS object file that
has not been accelerated, breakpoints can be at any TNS instruction location. In a
TNS object file that has been accelerated, breakpoints can be only at certain TNS
instruction locations (see memory-exact point), not at arbitrary instructions. Some
source statement boundaries are not available. However, breakpoints can be placed at
any instruction in the accelerated code.
canonical form. A standard way of representing TNS machine register values in assigned
system registers, at certain synchronization points within accelerated code. Each live
16-bit TNS register value resides in its home system register, right-justified and sign-
extended to fill the 32-bit or 64-bit register. Register values that have no future uses
are considered dead; their home system registers might contain undefined values.
The TNS machine state must be in canonical form at all register-exact points where the
program might switch to or from interpreted execution mode. At all other program
locations, TNS Object Code Accelerator (OCA) or Accelerator optimizations might
cause TNS register values to be carried in various noncanonical forms such as
combined TNS register pairs.
central processing unit (CPU). Historically, the main data processing unit of a computer.
HP NonStop™ servers have multiple cooperating processors rather than a single CPU.
See also
processor .
child process. A process created by another process. The creating process becomes the
parent process of the new process. See also pathname component .
CISC compiler. See TNS compiler .
CISC processor. An instruction processing unit (IPU) that is based on complex
instruction-set computing (CISC) architecture.
class. A group of object-oriented data entities and the methods associated with that group.