mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-23 21:28:06 +11:00
40f92b9bab
Inline it in next and make chkPS, call a newly reserved label for it directly, removing a layer of indirection. This frees a spot in the stable ABI.
17 lines
426 B
Plaintext
17 lines
426 B
Plaintext
L4 BSET ( chkPS )
|
|
( Note that you only need to call this in words that push
|
|
back to PSP. If they don't, calling chkPS is redundant with
|
|
check in next )
|
|
EXX,
|
|
( We have the return address for this very call on the stack
|
|
and protected registers. 2 - is to compensate that. )
|
|
HL PS_ADDR 2 - LDddnn,
|
|
SP SUBHLss,
|
|
EXX,
|
|
CNC RETcc, ( PS_ADDR >= SP? good )
|
|
JR, L2 BWR ( abortUnderflow-B298 )
|
|
|
|
|
|
|
|
|