SVC 5, FREEMAIN (all E and L options, VU and VC)

Restriction: This topic applies to Windows environments only.

INPUT

Register 1
Address of parameter list.

OUTPUT

Register 15
Return code:
- 0=Successful
- 4=4=Status of memory unchanged

Parameter list, 10 bytes in length.

Bytes	Description
0-3	Element request: length requested List request: address of a list of lengths requested (one word per request, the last word contains X'80' in byte 0.)
4 -7	Single area request: address of a word containing the address of the area to be freed. List-request: address of a list of addresses of areas to be freed. Variable request: address of a double-word containing the address to be freed in the first word and the length to be freed in the second word.
8	Flag byte: 10 Request is for storage aligned on a page boundary. 00 Unconditional element request. 20 Conditional element request. 80 Unconditional list request. A0 Conditional list request. C0 Unconditional variable request. E0 Conditional variable request.
9	Subpool that the memory belongs to

Note: A conditional request with a failure should result in an abend without returning to the calling program.