Reading the SDUMPX 4K SQA buffer

The following SVC dumps contain problem data in an SDUMPX 4K system queue area (SQA) buffer:

To obtain the buffer, use the following IPCS subcommand:

  LIST 0 DOMAIN(SDUMPBUFFER) LENGTH(4096)

Table 1 describes the fields in the SQA buffer and should be used for diagnosis.

Table 1. Fields in SQA bugger
Offset	Length	Content
0 (0)	4	The characters, TYPE
4 (4)	4	RTM/SLIP processing environment indicator: X'00000001': RTM1 X'00000002': RTM2 X'00000003': MEMTERM X'00000004': PER
8 (8)	4	The characters, CPU
12 (C)	4	Logical processor identifier (CPUID)
16 (10)	4	The characters, REGS
20 (14)	64	General purpose registers 0 through 15 at the time of the event
84 (54)	4	The characters, PSW
88 (58)	8	The program status word (PSW) at the time of the event
96 (60)	4	The characters, PASD
100 (64)	2	The primary address space identifier (ASID) at the time of the event
102 (66)	4	The characters, SASD
106 (6A)	2	The secondary ASID at the time of the event
108 (6C)	4	The characters, ARS
112 (70)	64	Access registers 0 through 15 at the time of the event.
176 (B0)	4	The characters, G64H
180 (B4)	64	High halves of general purpose registers 0 through 15 at the time of the event
244 (F4)	variable	One of the following, as indicated by the RTM/SLIP processing environment indicator at offset 4 of the buffer: The system diagnostic work area (SDWA), if offset 4 is 1 (RTM1) The recovery termination manager 2 (RTM2) work area (RTM2WA), if offset 4 is 2 (RTM2) The address space control block (ASCB), if offset 4 is 3 (MEMTERM) The PER interrupt code and PER address, if offset 4 is 4 (PER)
4076 (FEC)	4	The characters, P16
4080 (FF0)	16	The 16-byte program status word (PSW) at the time of the event.