OS_FSControl 20 (changes)
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OS SWI Calls
» OS_FSControl
» OS_FSControl 20
OS_ FSControl 20
(SWI &29)
| Entry | |
|---|---|
| R0 | 20 (&14) |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Pointer to primary module base |
| R2 | Pointer to private word |
Use
The purpose of this call is to read the location of the primary module for the temporary filing system. system, and its private word. (For example, ifADFS were the temporary filing system, this call would return FileCore’s address, whereas OS_FSControl 30 would return the address of ADFS – the secondary module. However, if NetFS were the temporary filing system, this call would return its address.)
Notes
If there is no temporary filing system this call will return values for the current filing system. If there is no current filing system R1=0, R2 is undefined. The secondary module values can be read with OS_FSControl 30.
See also
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