gtpp1m1aProgram Development Support Reference

Dump Labels for the Entry Control Block (ECB)

The following dump labels identify fields in the ECB.

Table 41. Dump Labels for the Entry Control Block (ECB)

Label Description
AUT ALASC auto - storage block save area.
AVM Maximum times to avoid application time-out plus one.
AV1 Base of the ECB available queue for 128-/381-byte blocks.
AV2 Base of the ECB available queue for 1055-byte blocks.
AV4 Base of the ECB available queue for 4095-byte blocks.
BAD Post-interrupt branch address.
BCH SVM address of the previous ECB in a chain of thread ECBs in a process.
CHW ECB chain word.
CNF Address of the BSS CINFC table.
CPL ECB virtual address of current program nesting level.
CPX CCP status word. Last byte is the CPU ID of the CPU that caused the ECB.
CRP Core block reference word of active program block.
CRS CROSC save area.
CR0-CRF Core block reference words.
CSC Pointer to static storage control block for C language support.
CSP Pointer to C static storage.
CTL Count of I/O requests outstanding.
CXR Enter expansion to be executed at CXFRC post-interrupt time.
DBI The MDBF database identifier.
DBT The detached block table.
DEC ECB virtual address of the first data event control block (DECB) frame for this ECB.
DET Address of current detached block table entry.
EGS EVM address of the last page table for the ISO-C stack of this ECB.
EHT ECB hold table pointer.
EVA The EVA of the ECB.
FAP File address reference word of active program block.
FA0-FAF File address reference words.
FCH SVM address of the next ECB in the chain of thread ECBs in a process.
FLG ECB format flag.
FPL ECB virtual address of first program nesting level.
FRM Anchor for the ECB frame chain.
FX0-FXF File address reference word extensions. Used for general data set (GDS) support.
GLA Pointer to the global 1 directory for this ECB's I-stream and subsystem user.
GLY Pointer to the global 3 directory for this ECB's I-stream and subsystem user.
GLB System virtual address of the start of the ECB segment table entries for the I-stream unique primary globals.
GLX System virtual address of the start of the ECB segment table entries for the high storage primary globals.
GMH System virtual address of the high water mark page table entry for contiguous GETMAIN storage.
GMT System virtual address of ECB page table for contiguous GETMAIN storage.
HFC Heap management - head of frame chain.
ISN I-stream affinity of the ECB.
L0-L34 ECB program nesting levels.
MTH ECB macro trace table header.
NVA The offset into the ECB page table of the next available ECB virtual address in the ECB private area.
PSW Contents of the current PSW the last time a TPF SVC or fastlink macro was issued. This PSW is used to resume application program execution when the macro service routine completes its processing.
PAT Current PAT slot address.
PGT The system virtual address of the ECB's page table.
R8 Address of the currently active program.
R14-R7 Contents of the general registers R14-R7 at the time of the last SVC of fastlink macro call.
RET Number of frames removed from this ECB since ECB creation.
SBI MDBF program base identifier.
SGT The system virtual address of the ECB's segment table.
SON SON decode field.
SSU MDBF subsystem user identifier.
STA EVM address of the start of the ISO-C stack area of this thread.
STD The segment table designation for the ECB's virtual address space.
STK Pointer to the current C language stack frame.
STP Address of the TPFAR STP block.
SUD Detail data level indicators - one byte for each level.
SUP Program level error indicator.
SVA The SVA of the ECB.
SVT The system virtual address table for this ECB.
TCA Base of the C language task communication area.
TCB EVM address of the thread control block (TCB) of this ECB.
TFC Heap management - total frames in use.
TMC Transaction manager control record (TMCR).
TOD Contents of TOD clock at time of ECB creation.
TRC Pointer to the OPZERO program that created this ECB, or name of the program that created this ECB through CRET/CREM/CRED/CREX.
TRT Pointer to the C language translate table.
TSA The address of the segment table save area (STSA) block for this ECB.
TTA Test tools area.
TYP The ECB type, where:
  • 00-normal ECB
  • 01-master thread ECB
  • 02-nonmaster thread ECB.
URA-UR7 User save area for general registers R14-R7.
USA0-U104 User work area (if present).
USR Area in ECB page 2 reserved for TPF users.
VCT Count of trips to VFA.
WSW1 General purpose switches.
W000-W096 ECB work area.
XSW0 Secondary work area switches.
X000-X096 Secondary work area.