TTIMER macro
and STIMERM macro
(TEST and CANCEL options) - is type 2, gets local and dispatcher locks.
For TTIMER macro, GTF data is:
- R15
- No applicable data.
- R0
- Pointer to 8-byte area containing the interval remaining if "MIC"
is specified.
- R1
- Low-order byte contains code indicating the type of request and
the format of the returned value.
- Bytes
- Contents
- 0-2
- Reserved.
- 3
- Flag bits, as follows:
| |
|
|
|---|
| 0000 |
.... |
Reserved; must be zero. |
| .... |
0... |
TTIMER macro present. |
| .... |
.1.. |
ERRET option. Routine specified by the ERRET parameter gets
control on an environmental error. Register 15 contains the return
code. |
| .... |
..1. |
MIC option. Interval remaining is returned to the specified
address in microseconds. (Bit 51 is equivalent to approximately 1
microsecond.) |
| .... |
..0. |
TU option. Time remaining in the task's time interval is
to be in register 0 in timer units. |
| .... |
...1 |
CANCEL option. Current task's time interval is to be canceled. |
- R4
- Points to requester's TCB.
- R5
- Points to the SVRB.
- R7
- Points to the ASCB.
- R14
- Contains the return address.
For STIMERM macro (TEST and CANCEL options) GTF data is:
- R15
- No applicable data.
- R0
- Pointer to a 16-byte parameter list which is formatted as follows:
- Bytes
- Contents
- 0
- Flag bits, as follows:
| |
|
|
|---|
| 000. |
.... |
Reserved; must be zero. |
| ...1 |
.... |
TU option. Time remaining in the current task's time interval
is placed in a 4 byte field supplied by the user. It is recorded
in timer units. |
| .... |
1... |
"ID=ALL" option. |
| .... |
.1.. |
ERRET option. Routine specified by the ERRET parameter gets
control on an environmental error. Register 15 contains the return
code. |
| .... |
..1. |
MIC option. Interval remaining is returned to the specified
address in microseconds. (Bit 51 is equivalent to approximately 1
microsecond.) |
| .... |
...1 |
CANCEL option. Specified time interval is to be cancelled. |
- 1-2
- Reserved; must be zero.
- 3
- Flag bits as follows: Level number of the parameter list. Must
be X'01'
- 4-7
- Pointer to 4-byte area containing the TQE ID.
- 8-11
- Pointer to area in which interval remaining will be stored. If
"TU" is specified, the area must be 4 bytes. If "MIC" is specified,
the area must be 8 bytes.
- 12-16
- Reserved; must be zero.
- R1
- Flag bytes formatted as follows:
- Bytes
- Contents
- 0-2
- Reserved; must be zero.
- 3
- Flag bits, as follows:
| |
|
|
|---|
| 0000 |
.... |
Reserved; must be zero. |
| .... |
1... |
STIMERM macro present. |
| .... |
.000 |
Reserved; must be zero. |
- R4
- Points to the requester's TCB.
- R5
- Points to the SVRB.
- R7
- Points to the ASCB.
- R14
- Contains the return address.