B1.52 Encoding Of Iss[24:20] When Hsr[31:30] Is 0B00 - ARM Cortex-A35 Technical Reference Manual

B1.52 Encoding of ISS[24:20] when HSR[31:30] is 0b00
For EC values that are nonzero and have the two most-significant bits 0b00, ISS[24:20] provides the
condition field for the trapped instruction, together with a valid flag for this field.
The encoding of this part of the ISS field is:
CV, ISS[24]
When an instruction is trapped, CV is set to 1.
COND, ISS[23:20]
When an instruction is trapped, the COND field is set to the condition the instruction was executed with.
100236_0100_00_en
Condition valid. Possible values of this bit are:
The COND field is not valid.
0
The COND field is valid.
1
The Condition field for the trapped instruction. This field is valid only when CV is set to 1.
If CV is set to 0, this field is
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B1.52 Encoding of ISS[24:20] when HSR[31:30] is 0b00

.
RES0
reserved.
Non-Confidential
B1 AArch32 system registers
B1-228