10.4.10. Breakpoint Extended Value Registers

The DBGBXVR characteristics are:


Holds a value for use in breakpoint matching, to support VMID matching.

Usage constraints

Used in conjunction with a DBGBCR and a DBGBVR. See Breakpoint Control Registers, and Breakpoint Value Registers. Each DBGBXVR is associated with a DBGBCR and DBGBVR to form a Breakpoint Register Pair (BRP). DBGBXVRn is associated with DBGBCRn and DBGBVRn to form breakpoint n.


The processor implements 2 BRPs that can be used for VMID matching, and is specified by the DBGDIDR.CTX_CMPs field, see Debug ID Register.


See the register summary in Table 10.1.

Figure 10.12 shows the DBGBXVR bit assignments.

Figure 10.12. DBGBXVR bit assignments

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Table 10.12 shows the DBGBXVR bit assignments.

Table 10.12. DBGBXVR bit assignments




VMID value. Compared VTTBR.VMID, the Virtual Machine ID (VMID) field. The debug logic generates a debug event when an instruction that matches the breakpoint is committed for execution. See the ARM Architecture Reference Manual for more information.

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