| PsiFS_AsyncControl (SWI &520C8) | |||||||||||
| Control an asynchronous remote operation | |||||||||||
| On entry: | R0 = | reason code | |||||||||
| R1 = | the previously allocated handle for this operation | ||||||||||
| Other registers depend on reason code | |||||||||||
| On exit: | Registers preserved | ||||||||||
| Interrupts: | Interrupt status is undefined Fast interrupts are enabled | ||||||||||
| Processor mode: | Processor is in SVC mode | ||||||||||
| Re-entrancy: | SWI is not re-entrant | ||||||||||
| Use: |
This call controls a previously started asynchronous remote operation, depending on the reason code in R0. Valid reason codes are:
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| Related SWIs: | PsiFS_AsyncStart, PsiFS_AsyncEnd, PsiFS_AsyncPoll | ||||||||||
| Related vectors: | None | ||||||||||
| PsiFS_AsyncControl 0 (SWI &520C8) | |||||||||||||||||||||
| Simple response to query | |||||||||||||||||||||
| On entry: | R0 = | 0 | |||||||||||||||||||
| R1 = | the previously allocated handle for this operation | ||||||||||||||||||||
| R2 = | the response code | ||||||||||||||||||||
| On exit: | Registers preserved | ||||||||||||||||||||
| Use: |
Supply a simple response to a query returned previously by PsiFS_AsyncPoll. Valid response codes are:
The response must be appropriate to the query. | ||||||||||||||||||||
| PsiFS_AsyncControl 1 (SWI &520C8) | |||
| Pause operation | |||
| On entry: | R0 = | 1 | |
| R1 = | the previously allocated handle for this operation | ||
| On exit: | Registers preserved | ||
| Use: | Pause the specified asynchronous remote operation. This may not have immediate effect; PsiFS will wait for a convenient time if necessary. | ||
| PsiFS_AsyncControl 2 (SWI &520C8) | |||
| Resume operation | |||
| On entry: | R0 = | 2 | |
| R1 = | the previously allocated handle for this operation | ||
| On exit: | Registers preserved | ||
| Use: | Resume a previously paused asynchronous remote operation. | ||
| [Contents] [Up] | Copyright © Alexander Thoukydides, 1998, 1999, 2000 |