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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure TTEBK TRACE TABLE ENTRY FORMAT
0000 0 Bitstring 1 TTECODE HARDWARE TRACE ENTRY IDENTIFIER
'7N' (N IS THE NO. OF REGISTERS
MINUS ONE STORED: 4 FOR VM/XA)
.111 .1.. TTECDTRC X'74' TRACE instruction code
0001 1 Bitstring 1 TTEFORM Trace entry format
00000080 TTETRACG X'80' TTETRACG TRACG instruction
entry
00000000 TTETRACE X'00' TTETRACE TRACE instruction
entry
0002 2 Bitstring 6 TTETODCK LAST 6 BYTES OF TOD CLOCK, BY
HARDWARE
ALL OF THE ABOVE FIELDS ARE
SUPPLIED BY THE HARDWARE
EXECUTION OF THE TRACE
INSTRUCTION
THE FOLLOWING FIELDS ARE THE DATA
PASSED BY THE TRACE INSTRUCTION
BY THE SOFTWARE.
0008 8 Signed 4 TTEOPRND TRACE operand
0008 8 Bitstring 2 * RESERVED FOR HARDWARE USE
0008 8 Bitstring 1 *
0009 9 Bitstring 1 * Model dependent data
000A 10 Bitstring 2 TTECID TRACE ENTRY ID (IE 0A00=RUN USER)
THE FOLLOWING FIELDS ARE PASSED
TO THE TRACE INSTRUCTION IN
CONSECUTIVE GENERAL PURPOSE
REGISTERS.
000C 12 Signed 4 TTEDATA0 FIRST DATA FIELD PASSED (RX)
0010 16 Signed 4 TTEDATA1 SECOND DATA FIELD PASSED (RX+1)
0014 20 Signed 4 TTEDATA2 THIRD DATA FIELD PASSED (RX+2)
0018 24 Signed 4 TTEDATA3 FOURTH DATA FIELD PASSED (RX+3)
001C 28 Signed 4 TTEDATA4 FIFTH DATA FIELD PASSED (RX+4)
0020 32 Signed 4 TTENEXT (0) NEXT TRACE ENTRY
00000004 TTESIZE (*-TTEBK+7)/8 :SIZE OF BLOCK IN
DOUBLE WORDS
00000020 TTELEN (*-TTEBK) :LENGTH OF BLOCK IN
BYTES
0000 0 Signed 4 * 1ST WORD NOT SAVED ON TAPE
0004 4 Bitstring 28 TTETSTRT LAST HALF OF TOD ON IS SAVED
0000001C TTETSTSZ *-TTETSTRT SIZE OF TST TRACE
ENTRY ON TAPE
TRACG Instruction trace entry format
0000 0 Bitstring 1 TTEGCODE Hardware trace entry identifier
'7n' (n is the number of
registers stored minus one: 6-1=5
for CP)
.111 .1.1 TTECDTRG X'75' TRACG instruction code
0001 1 Bitstring 1 TTEGFORM Trace entry format
0002 2 Bitstring 10 TTEGTODC (0) Bits 0-79 of TOD clock
0002 2 Bitstring 2 * Bits 0-15
0004 4 Bitstring 6 TTEGTODM Bits 16-63
000A 10 Bitstring 2 * Bits 64-79
The fields above are supplied by
hardware executon of the TRACG
instruction.
Fullword operand of the TRACG
instruction. For CP this has
historically been two bytes of
zeros followed by a two byte
trace entry identification
token. Starting with the z10
support, CP set the TRACE TOD
control bit on in CR0 which
caused, when the store clock
fast facility is installed, a
model dependent value to be
stored in the second byte of the
operand. Lastly, for function
specific trace table entries
the high halfword of the operand
is set to the CPU address of
processor where the entry was
originally cut.
000C 12 Signed 4 TTEGOPRND TRACG operand
000C 12 Bitstring 2 *
000C 12 Bitstring 1 *
000D 13 Bitstring 1 * Model dependent data
000C 12 Signed 2 TTEGCPU CPU address (only valid in
entries copied to function
specific trace tables by the
HCPFRTT facility)
000E 14 Bitstring 2 TTEGCID Trace entry ID
(E.g.,0A00=RUNUSER)
The following fields are passed
to the TRACG instruction in
consecutive general-purpose
registers.
0010 16 Dbl-Word 8 TTEGDAT0 First register (RX)
0018 24 Dbl-Word 8 TTEGDAT1 Second register (RX+1)
0020 32 Dbl-Word 8 TTEGDAT2 Third register (RX+2)
0028 40 Dbl-Word 8 TTEGDAT3 Fourth register (RX+3)
0030 48 Dbl-Word 8 TTEGDAT4 Fifth register (RX+4)
0038 56 Dbl-Word 8 TTEGDAT5 Sixth register (RX+5)
0040 64 Dbl-Word 8 TTEGNEXT (0) Next TRACE/TRACG entry
00000040 TTEGLEN (*-TTEBK) Length of TRACG entry
in bytes
0002 2 Bitstring 1 TTETOD1 FIRST BYTE OF TTETODCK
0002 2 Bitstring 4 TTETODHI FIRST 4 BYTES OF TTATODCK
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