z80pack: use end of bounce buffer for swap stack

It's never doing both at once

diff --git a/Kernel/platform-z80pack/tricks.s b/Kernel/platform-z80pack/tricks.s
index 41694f5..924a68f 100644 (file)
--- a/Kernel/platform-z80pack/tricks.s
+++ b/Kernel/platform-z80pack/tricks.s
@@ -266,13 +266,6 @@ _dofork:
        ; to be the live uarea. The parent is frozen in time and space as
        ; if it had done a switchout().
         ret
-;
-;      We can keep a stack in common because we will complete our
-;      use of it before we switch common block. In this case we have
-;      a true common so it's even easier.
-;
-       .ds 128
-_swapstack:
 
 ;
 ;      This is related so we will keep it here. Copy the process memory
@@ -317,3 +310,11 @@ bankfork_1:
 ;
 bouncebuffer:
        .ds 256
+;
+;      We can keep a stack in common because we will complete our
+;      use of it before we switch common block. In this case we have
+;      a true common so it's even easier. This can share with the bounce
+;      buffer used by bankfork as we won't switchin mid way through the
+;      banked fork() call.
+;
+_swapstack: