tree 3cefb803a1aa164e03f3683113d63be991ccdde7
parent 4ff01a7a4a51f53b44496aefee1e3c0071b7b173
author Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com> 1700716667 +0530
committer GitHub <noreply@github.com> 1700716667 +0530
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsBcBAABCAAQBQJlXuB7CRBK7hj4Ov3rIwAAjswIAGGqsAgxRlyv3799kROlfjPj
 saM6PrMc/eMbRh1C0kP+P9C/VyswaXNMY2hw2bl+KEDezohLKvy+VKr0cUPNjnWQ
 iSj8FhW2HWBgjvSbFgMtW3STN5HoLHGTcWzEqdbdH90IoMbcnK+qHvg5ZyPP/PbA
 dmUjeWtkbLlHtMR04IQRc08Kg/OPTO3xgSw0BgIhvI/PA289tjw2/4LCqQ7CQMZ5
 Gz4Pd28aP/ktU75U6QPGheIrI+AzaukwvrNMRqLDjPmJeXoflirwtMcnOhLNY6qM
 nu4UynP9tA4+si7uiryNYMam6smA8V44SRiUtLw+yl7PiCMgObEkCVVg94Qm5/A=
 =vkOd
 -----END PGP SIGNATURE-----
 

Update system call entry mechanism (#898)

Earlier the System Call entry from an unprivileged task
looked like:

1. SVC for entering system call.
2. System call implementation.
3. SVC for exiting system call.

Now, the system call entry needs to make only one SVC
call and everything else is handled internally.

This PR also makes the following changes:

1. Update the Access Control List (ACL) mechanism to
    grant access to all the kernel objects before the
    scheduler is started.
2. Add one struct param for system calls with 5 parameters.
    This removes the need for special handling for system
    calls with 5 parameters.
3. Remove raise privilege SVC when MPU wrapper v2 is used.
4. Add additional run time parameter checks to MPU wrappers
    for xTaskGenericNotify and xQueueTakeMutexRecursive APIs.