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BL

Branch with Link branches to a PC-relative offset, setting the register X30 to PC+4. It provides a hint that this is a subroutine call.

313029282726252423222120191817161514131211109876543210
100101imm26
op

26-bit signed PC-relative branch offset

BL <label>

BranchType branch_type = if op == '1' then BranchType_DIRCALL else BranchType_DIR; bits(64) offset = SignExtend(imm26:'00', 64);

Assembler Symbols

<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.

Operation

if branch_type == BranchType_DIRCALL then X[30] = PC[] + 4; BranchTo(PC[] + offset, BranchType_DIRCALL);[] + offset, branch_type);


Internal version only: isa v30.25, AdvSIMD v27.01, pseudocode v85-xml-00bet8_rc3 ; Build timestamp: 2018-09-13T13:2504

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