You copied the Doc URL to your clipboard.

Shared Functions.Aborts Pseudocode

Library pseudocode for shared/functions/aborts/EncodeLDFSC

// EncodeLDFSC()
// =============
// Function that gives the Long-descriptor FSC code for types of Fault

bits(6) EncodeLDFSC(Fault statuscode, integer level)

    bits(6) result;
    case statuscode of
        when Fault_AddressSize         result = '0000':level<1:0>; assert level IN {0,1,2,3};
        when Fault_AccessFlag          result = '0010':level<1:0>; assert level IN {1,2,3};
        when Fault_Permission          result = '0011':level<1:0>; assert level IN {1,2,3};
        when Fault_Translation         result = '0001':level<1:0>; assert level IN {0,1,2,3};
        when Fault_SyncExternal        result = '010000';
        when Fault_SyncExternalOnWalk  result = '0101':level<1:0>; assert level IN {0,1,2,3};
        when Fault_SyncParity          result = '011000';
        when Fault_SyncParityOnWalk    result = '0111':level<1:0>; assert level IN {0,1,2,3};
        when Fault_AsyncParity         result = '011001';
        when Fault_AsyncExternal       result = '010001';
        when Fault_Alignment           result = '100001';
        when Fault_Debug               result = '100010';
        when Fault_TLBConflict         result = '110000';
        when Fault_HWUpdateAccessFlag  result = '110001';
        when Fault_Lockdown            result = '110100';  // IMPLEMENTATION DEFINED
        when Fault_Exclusive           result = '110101';  // IMPLEMENTATION DEFINED
        otherwise                      Unreachable();

    return result;

Library pseudocode for shared/functions/aborts/IPAValid

// IPAValid()
// ==========
// Return TRUE if the IPA is reported for the abort

boolean IPAValid(FaultRecord fault)
    assert fault.statuscode != Fault_None;

    if fault.s2fs1walk then
        return fault.statuscode IN {Fault_AccessFlag, Fault_Permission, Fault_Translation,
                              Fault_AddressSize};
    elsif fault.secondstage then
        return fault.statuscode IN {Fault_AccessFlag, Fault_Translation, Fault_AddressSize};
    else
        return FALSE;

Library pseudocode for shared/functions/aborts/IsAsyncAbort

// IsAsyncAbort()
// ==============
// Returns TRUE if the abort currently being processed is an asynchronous abort, and FALSE
// otherwise.

boolean IsAsyncAbort(Fault statuscode)
    assert statuscode != Fault_None;

    return (statuscode IN {Fault_AsyncExternal, Fault_AsyncParity});

// IsAsyncAbort()
// ==============

boolean IsAsyncAbort(FaultRecord fault)
    return IsAsyncAbort(fault.statuscode);

Library pseudocode for shared/functions/aborts/IsDebugException

// IsDebugException()
// ==================

boolean IsDebugException(FaultRecord fault)
    assert fault.statuscode != Fault_None;
    return fault.statuscode == Fault_Debug;

Library pseudocode for shared/functions/aborts/IsExternalAbort

// IsExternalAbort()
// =================
// Returns TRUE if the abort currently being processed is an external abort and FALSE otherwise.

boolean IsExternalAbort(Fault statuscode)
    assert statuscode != Fault_None;

    return (statuscode IN {Fault_SyncExternal, Fault_SyncParity, Fault_SyncExternalOnWalk, Fault_SyncParityOnWalk,
                     Fault_AsyncExternal, Fault_AsyncParity });

// IsExternalAbort()
// =================

boolean IsExternalAbort(FaultRecord fault)
    return IsExternalAbort(fault.statuscode);

Library pseudocode for shared/functions/aborts/IsExternalSyncAbort

// IsExternalSyncAbort()
// =====================
// Returns TRUE if the abort currently being processed is an external synchronous abort and FALSE otherwise.

boolean IsExternalSyncAbort(Fault statuscode)
    assert statuscode != Fault_None;

    return (statuscode IN {Fault_SyncExternal, Fault_SyncParity, Fault_SyncExternalOnWalk, Fault_SyncParityOnWalk});

// IsExternalSyncAbort()
// =====================

boolean IsExternalSyncAbort(FaultRecord fault)
    return IsExternalSyncAbort(fault.statuscode);

Library pseudocode for shared/functions/aborts/IsFault

// IsFault()
// =========
// Return TRUE if a fault is associated with an address descriptor

boolean IsFault(AddressDescriptor addrdesc)
    return addrdesc.fault.statuscode != Fault_None;

Library pseudocode for shared/functions/aborts/IsSErrorInterrupt

// IsSErrorInterrupt()
// ===================
// Returns TRUE if the abort currently being processed is an SError interrupt, and FALSE
// otherwise.

boolean IsSErrorInterrupt(Fault statuscode)
    assert statuscode != Fault_None;

    return (statuscode IN {Fault_AsyncExternal, Fault_AsyncParity});

// IsSErrorInterrupt()
// ===================

boolean IsSErrorInterrupt(FaultRecord fault)
    return IsSErrorInterrupt(fault.statuscode);

Library pseudocode for shared/functions/aborts/IsSecondStage

// IsSecondStage()
// ===============

boolean IsSecondStage(FaultRecord fault)
    assert fault.statuscode != Fault_None;

    return fault.secondstage;

Library pseudocode for shared/functions/aborts/LSInstructionSyndrome

// Returns the extended syndrome information for a second stage fault.
//  <10>  - Syndrome valid bit. The syndrome is only valid for certain types of access instruction.
//  <9:8> - Access size.
//  <7>   - Sign extended (for loads).
//  <6:2> - Transfer register.
//  <1>   - Transfer register is 64-bit.
//  <0>   - Instruction has acquire/release semantics.
bits(11) LSInstructionSyndrome();
Previous Next