Accelerator Manual (G06.27+, H06.04+, J06.03+)

Accelerator Manual—527303-003
Glossary-1
Glossary
absolute pathname. A pathname that begins with a slash (/) character and is resolved
beginning with the root directory. Contrast with “relative pathname.”
accelerate. To use the Accelerator program to generate an accelerated object file.
accelerated mode. The operational environment in which Accelerator-generated RISC
instructions execute.
accelerated object code. The RISC instructions that result from processing a TNS object
file with the Accelerator.
accelerated object file. The object file that results from processing a TNS object file with
the Accelerator. An accelerated object file contains the original TNS object code, the
accelerated object code and related address map tables, and any Binder and symbol
information from the original TNS object file.
Accelerator. A program that processes a TNS object file and produces an accelerated
object file. Most TNS object code that has been accelerated runs faster on TNS/R
processors than TNS object code that has not been accelerated.
aligned. In TNS/R native mode, a data item is aligned if its address is a multiple of its size;
for example, a 4-byte data item is aligned if its byte address is a multiple of 4.
application program interface (API). A set of services (such as programming language
functions or procedures) that are called by an application program to communicate with
other software components. For example, under Open System Services, an application
uses functions defined by ISO/IEC IS 9945-1:1990 to perform process management,
time management, and file management functions through the operating system.
API. See application program interface.
breakpoint. A location in a program at which execution is suspended so that you can
examine and perhaps modify the program’s state. A breakpoint can occur just before
the execution of a specific instruction (instruction breakpoint) or it can occur when a
specific memory location is accessed in a specified way (memory-access breakpoint).
A TNS breakpoint is an instruction breakpoint within a sequence of TNS instructions. A
RISC breakpoint is an instruction breakpoint within a sequence of RISC instructions. In
accelerated code, a TNS breakpoint can be placed only at a “memory-exact point” or at
a “register-exact point”; the debugger sets a corresponding RISC breakpoint.
C-series system. A system that is running a C-series version of the operating system.
CISC. See “complex instruction-set computing (CISC).”
complex instruction-set computing (CISC). A processor architecture based on a large
instruction set, characterized by numerous addressing modes, multicycle machine