At 5:29 PM +0000 1999/07/23, [EMAIL PROTECTED] wrote:
>Does Palm have a list of which traps should "absolutly not" be trapped ?
>It would be very helpfull to have something to reference when writting
>trap code.
They're listed in Appendix A of the Palm OS documentation under the heading "System
Use Only Functions". Not listed there, however, are all APIs beginning with 'Hwr' and
'Prv' which are also very much off-limits.
Also note there may be issues with trap patches installed from HackMaster hacks for
otherwise seemingly legitimately patchable public APIs, due to the need to call the
feature manager from within the trap patch to obtain the call-through address.
For example, if the patched API is ever called from within an interrupt service
routine, system kernel timer, or pre-emptive background thread (to name a few). The
feature manager is not re-entrant for these cases, so FtrGet will eventually crash the
device, which could possibly destroy the user's data depending on which API had been
patched.
This list is obviously incomplete, but it's a start. Hope the info helps!
Regards,
Jim Schram
3Com/Palm Computing
Partner Engineering
