VBAR_EL3, Vector Base Address Register (EL3)

The VBAR_EL3 characteristics are:

Purpose

Holds the vector base address for any exception that is taken to EL3.

Configuration

RW fields in this register reset to architecturally UNKNOWN values.

Attributes

VBAR_EL3 is a 64-bit register.

Field descriptions

The VBAR_EL3 bit assignments are:

6362616059585756555453525150494847464544434241403938373635343332
Vector Base Address
Vector Base AddressRES0
313029282726252423222120191817161514131211109876543210

Bits [63:11]

Vector Base Address. Base address of the exception vectors for exceptions taken to EL3.

If the implementation does not support ARMv8.2-LVA, then:

If the implementation supports ARMv8.2-LVA, then:

This field resets to an architecturally UNKNOWN value.

Bits [10:0]

Reserved, RES0.

Accessing the VBAR_EL3

Accesses to this register use the following encodings:

MRS <Xt>, VBAR_EL3

op0op1CRnCRmop2
0b110b1100b11000b00000b000

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then UNDEFINED; elsif PSTATE.EL == EL2 then UNDEFINED; elsif PSTATE.EL == EL3 then return VBAR_EL3;

MSR VBAR_EL3, <Xt>

op0op1CRnCRmop2
0b110b1100b11000b00000b000

if PSTATE.EL == EL0 then UNDEFINED; elsif PSTATE.EL == EL1 then UNDEFINED; elsif PSTATE.EL == EL2 then UNDEFINED; elsif PSTATE.EL == EL3 then VBAR_EL3 = X[t];




27/03/2019 21:59; e5e4db499bf9867a4b93324c4dbac985d3da9376

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