cray SP-2023 UNICOS Internal Reference Manual for CRAY-2 Computer Systems 5.0 free download

File name SP-2023_UNICOS_Internal_Reference_Manual_for_CRAY-2_Computer_Systems_5.0_.pdf

Introductory Material Examining Kernel Code This section describes the structure of the UNICOS kernel source code, and gives some tips on how to examine the code for debugging purposes. Structure of kernel source code In the released system, the kernel source code is in the directory lusrlsrcluts. (This directory should not be accessible to users.) This manual describes the source code in this directory and its subdirectories. Associated definition files (include files, also called header files) are also described; they are found in the source directory lusr/include/sys. This manual does not describe the software in other directories (for example, the TCP/IP source code). The uts directory contains the following subdirectories: Subdirectory Description boot Boot subdirectory cf Configuration subdirectory fs File system subdirectory io I/O subdirectory md Machine-dependent subdirectory os Operating system subdirectory The directory uts also contains files used in building the kernel; for example, the file osdef.s is the kernel's version of the assembler definition file used in building the kernel. SP-2023 5.0 CRAY PROPRIETARY 7 Examining Kernel Code UNICOS Internal Reference Manual for CRAY-2 Computer Systems Figure 1 shows the structure of the lusrlsrcluts directory. boot cf fs io md os Figure 1. Structure of the uts directory The directory lusr/include/sys is the system include file subdirectory. It contains the include files needed to build the kernel. The remainder of this subsection describes the contents of the subdir~ctories. The boot subdirectory This subdirectory contains the source files boot.c, booth.s, and boot.mk. It also contains the UNICOS boot program, osboot, if that program has been built. The cf subdirectory This subdirectory contains the following files and subdirectories: File Description