Branch with link
This instruction branches to a PC-relative offset, setting register X30 to PC+4. This instruction provides a hint that this is a subroutine call.
| 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 1 | 0 | 0 | 1 | 0 | 1 | imm26 | |||||||||||||||||||||||||
| op | |||||||||||||||||||||||||||||||
let offset : bits(64) = SignExtend{}(imm26::'00'); let d : integer = 30;
| <label> |
Is the program label to be unconditionally branched to. Its offset from the address of this instruction, in the range +/-128MB, is encoded as "imm26" times 4. |
if IsFeatureImplemented(FEAT_GCS) && GCSPCREnabled(PSTATE.EL) then AddGCSRecord(PC64() + 4); end; X{64}(d) = PC64() + 4; let branch_conditional : boolean = FALSE; BranchTo{64}(PC64() + offset, BranchType_DIRCALL, branch_conditional);
2026-03_rel 2026-03-26 20:48:11
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