MVS Utility Downloads

Source Code

Source code is provided in ZIP files. The code has successfully been compiled with the JCC C Compiler. The SVC Call Interface must be assembled and then included when link-editing the modules.

MVS Load Modules

The load modules are provided as an unloaded Load Library PDS created with IEBCOPY. The source Load Library is on a 3350 DASD with a block size of 19069. The downloadable files are AWS tape images.

Running the Programs

JCC Standard Files

JCC expects three files to be defined: STDIN, STDOUT, and STDERR. I normally allocate each to DA(*) so standard input and output are directed to the TSO terminal:

ALLOC FI(STDIN)  DA(*)
ALLOC FI(STDOUT) DA(*)
ALLOC FI(STDERR) DA(*)

The programs can still be run without these allocations, but standard C input, output, or diagnostic streams that are not allocated will not be available. For the full-screen utilities this normally does not matter.

Running PicoC

PicoC requires an input script. The following example uses generic dataset names that can be replaced with the names used on your MVS system:

ALLOC FI(SCRIPT) DA(your.script.dataset(member)) SHR
CALL 'your.load.library(PICOC)' '//DDN:SCRIPT'

For comparison, this is an example using the dataset names from my development system:

ALLOC FI(SCRIPT) DA(TCS3.C.ASM(FSI01)) SHR
CALL 'TCS3.MVS.LOAD(PICOC)' '//DDN:SCRIPT'