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BR -- A64

BR

Branch to register

This instruction branches unconditionally to an address in a register. This instruction provides a hint that this is not a subroutine call or return.

313029282726252423222120191817161514131211109876543210
1101011000011111000000Rn00000
Zopop2AMRm

Encoding

BR <Xn>

Decode for this encoding

let n : integer{} = UInt(Rn);

Assembler Symbols

<Xn>

Is the 64-bit name of the general-purpose register holding the address to be branched to, encoded in the "Rn" field.

Operation

let target : bits(64) = X{}(n); // Value in BTypeNext will be used to set PSTATE.BTYPE if InGuardedPage then if n == 16 || n == 17 then BTypeNext = '01'; else BTypeNext = '11'; end; else BTypeNext = '01'; end; let branch_conditional : boolean = FALSE; BranchTo{64}(target, BranchType_INDIR, branch_conditional);


2026-03_rel 2026-03-26 20:48:11

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