SBDisplayStack was a private class in SpringBoard that arranged SBDisplays until iOS 6. There were 4 display stacks, all being private and inaccessible directly, due to stripping. In iOS 6, the class was removed and replaced with SBWorkspaces for managing displays. As of 3.1, these 4 stacks were:
| VM address (3.1, armv6) | Stack name |
|---|---|
| *0x107540 | __SBWPreactivateDisplayStack |
| *0x107544 | __SBWActiveDisplayStack |
| *0x10753C | __SBWSuspendingDisplayStack |
| *0x107548 | __SBWSuspendedEventOnlyDisplayStack |
If you want to use these stacks without hardcoding the pointer, you may hook -[SBDisplayStack init] and store a reference of the return values.