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User-land ring buffers.

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git-svn-id: svn://kolibrios.org@7967 a494cfbc-eb01-0410-851d-a64ba20cac60
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hidnplayr
2020-05-22 15:38:59 +00:00
parent 8ac977e2e4
commit d397ad5154
3 changed files with 101 additions and 7 deletions
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19
kernel/trunk/docs/sysfuncs.txt
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@@ -3612,6 +3612,25 @@ Returned value:
* edx = size of the loaded file, or zero
Remarks:
* function loads file and unpacks, if necessary
======================================================================
======== Function 68, subfunction 29 - allocate ring memory. =========
======================================================================
Parameters:
* eax = 68 - function number
* ebx = 29 - subfunction number
* ecx = required size in bytes
Returned value:
* eax = 0 - failed
* eax = pointer to the allocated ring
Remarks:
* The requested size must be an exact multiple of pagesize (4 Kb)
* The function allocates memory in such a way that you can read and
write beyond the size of the allocated memory and will reach the
beginning of the buffer again.
---------------------- Constants for registers: ----------------------
eax - SF_SYS_MISC (68)
ebx - SSF_MEM_ALLOC_RING (29)
======================================================================
====================== Function 69 - debugging. ======================