Branch with Link to capability Register with possible switch to Restricted calls a subroutine at an address in the source register, setting C30 to PCC+4. The PE may switch to Restricted based on the Executive permission in PCC.
| 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 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | Cn | 0 | 0 | 0 | 1 | 1 | ||||
| opc<1> | opc<0> | ||||||||||||||||||||||||||||||
BLRR <Cn>
integer n = UInt(Cn); BranchType branch_type = BranchType_INDCALL;
if IsInRestricted() then UndefinedFault(); CheckCapabilitiesEnabled(); Capability target = C[n]; if CapIsTagSet(target) && CapIsSealed(target) && CapGetObjectType(target) == CAP_SEAL_TYPE_RB then target = CapUnseal(target); else if CCTLR[].SBL == '1' then target = CapWithTagClear(target); integer linkoffset = 4; Capability link; if IsInC64() then linkoffset = linkoffset + 1; link = CapAdd(PCC[], linkoffset); if CCTLR[].SBL == '1' then link = CapSetObjectType(link, CAP_SEAL_TYPE_RB); C[30] = link; BranchXToCapability(target, branch_type);
Internal version only: isa v32.13, AdvSIMD v29.04, pseudocode morello-2022-01_rc2, capabilities morello-2022-01_rc2 ; Build timestamp: 2022-01-11T11:23
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