STLLRB

Store LORelease Register Byte stores a byte from a 32-bit register to a memory location. The instruction also has memory ordering semantics as described in Load LOAcquire, Store LORelease. For information about memory accesses, see Load/Store addressing modes.

No offset
(FEAT_LOR)

313029282726252423222120191817161514131211109876543210
00001000100(1)(1)(1)(1)(1)0(1)(1)(1)(1)(1)RnRt
sizeLRso0Rt2

STLLRB <Wt>, [<Xn|SP>{,#0}]

integer n = UInt(Rn); integer t = UInt(Rt); boolean tag_checked = n != 31;

Assembler Symbols

<Wt>

Is the 32-bit name of the general-purpose register to be transferred, encoded in the "Rt" field.

<Xn|SP>

Is the 64-bit name of the general-purpose base register or stack pointer, encoded in the "Rn" field.

Operation

bits(64) address; bits(8) data; if HaveMTE2Ext() then SetTagCheckedInstruction(tag_checked); if n == 31 then CheckSPAlignment(); address = SP[]; else address = X[n]; data = X[t]; Mem[address, 1, AccType_LIMITEDORDERED] = data;

Operational information

If PSTATE.DIT is 1, the timing of this instruction is insensitive to the value of the data being loaded or stored.


Internal version only: isa v32.13, AdvSIMD v29.05, pseudocode v2020-12, sve v2020-12 ; Build timestamp: 2020-12-16T16:19

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