MPE/iX System Utilities Reference Manual (32650-90908)

Chapter 20
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20 SAINT
The Standalone Initialization Utility (SAINT) is an interactive utility program that analyzes system libraries
(which contain system object modules, or SOMs) to produce executable images known as boot images. A
bootable image is a file that can be copied directly to memory and executed without modification. The SAINT
utility’s primary function is to produce a boot image for the operating system.
The input file upon which the SAINT utility is primarily dependent is the system library file. The format of the
library file is defined in the SOM Architecture Control Document.
WARNING Do not use this utility without service center support. Unauthorized use will void
your warranty and may cause data loss.
The following terms are used in this chapter:
CME Compatibility mode environment. This file contains the environment required to run a
compatibility mode program file created by the MPE segmenter.
IODC I/O-dependent code. This I/O-device-specific code tests and accesses I/O devices, particularly
the boot device device (system disk).
IPL Initial program load. This is the first code to be executed from outside the SPU. It is usually
code residing on the system disk (the boot device) and is brought into the system by the PDC
and IODC code. It provides a user interface to boot image or SOM files into the system to be
executed.
LIF Logical interchange format. This is a common format used to identify the contents of diverse
media.
LST Library symbol table. This symbol table is contained in SOM library files and defines the
meaning and location of symbols contained in the SOMs that are part of the system library
file. The library file is defined in the SOM Architecture
Control Document.
PIT Page information table. This table contains entries identical to the page table entries
required by the system architecture. These entries describe the physical page layout of the
bootable image contained in the boot image file.
PDC Processor-dependent code. This code is contained in ROM and invokes processor self-tests,
locates the boot channel, and checks the condition of the boot device path (including the
CPU, main memory, and access to the boot device).
PME Primary macro environment. The historical name for MPE boot images. This document uses
only the term boot image.
RFI Return from interrupt. This system instruction restores the processor state by resetting the
values of the PSW, PC space, and PC offset registers to the values contained in the IPSW
and PC space and offset queues. This instruction can be used to switch instruction execution
from real addressing mode to virtual addressing mode.
SOM System object module. The SOM is the file used as the output of system compilers, the input
and output of the system linker and MPE/iX loader. Its format is defined in the SOM
Architecture Control Document.
XRT Cross reference table. This is a process-local table built by the MPE/iX loader, which
contains information required to make intermodule procedure calls. There is also a system
XRT (SXRT) residing in system space that is used to make system calls.