SVC 51 (0A33)

SNAP or SNAPX SDUMP or SDUMPX macro - is type 4, gets LOCAL, CMS, CMSEQDQ, DISP, VSMPAGE, VSMFIX, CPU, and SALLOC locks (see also the SNAP, SNAPX, SDUMP, OR SDUMPX control block in z/OS® MVS™ Data Areas in http://www.ibm.com/systems/z/os/zos/bkserv/).

Calls module IEAVAD00.

GTF data is:

R15 and R0: No applicable data.
R1: Address of the parameter list.
PLIST: For SNAP or SNAPX and SDUMP or SDUMPX parameter lists, see z/OS MVS Data Areas in http://www.ibm.com/systems/z/os/zos/bkserv/.