MTE (Memory Tagging) Instructions

13 ARM instructions in this extension - click any row for encoding, pseudocode, and full documentation.

Mnemonic ⇅ Syntax Format ⇅ Summary
addg ADDG <Xd|SP>, <Xn|SP>, #<uimm6>, #<uimm4> Data Processing Adds an immediate to an address, modifying the Allocation Tag (MTE).
gmi GMI <Xd>, <Xn|SP>, <Xm> Data Processing Calculates a mask of excluded tags (MTE).
irg IRG <Xd|SP>, <Xn|SP>{, <Xm>} Data Processing Inserts a random Allocation Tag into a pointer (MTE).
ldg LDG <Xt>, [<Xn|SP>, #<simm>] Load/Store Loads the Allocation Tag from memory.
st2g ST2G <Xt|SP>, [<Xn|SP>, #<simm>] Load/Store Stores the Allocation Tag to two memory granules.
stg STG <Xt|SP>, [<Xn|SP>, #<simm>] Load/Store Stores the Allocation Tag to memory.
stg STG <Xt|SP>, [<Xn|SP>, #<simm>] Load/Store Stores the Allocation Tag to memory.
stgp STGP <Xt>, <Xt2>, [<Xn|SP>, #<simm>] Load/Store Stores Tag and two 64-bit data values.
stz2g STZ2G <Xt|SP>, [<Xn|SP>, #<simm>] Load/Store Stores Tag and zeros memory for two granules.
stzg STZG <Xt|SP>, [<Xn|SP>, #<simm>] Load/Store Stores the Allocation Tag and zeros the data granule.
subg SUBG <Xd|SP>, <Xn|SP>, #<uimm6>, #<uimm4> Data Processing Subtracts an immediate from an address, modifying the Allocation Tag (MTE).
subp SUBP <Xd>, <Xn|SP>, <Xm|SP> Data Processing Subtracts pointers ignoring Tags.
subps SUBPS <Xd>, <Xn|SP>, <Xm|SP> Data Processing Subtracts pointers (ignoring tags) and sets condition flags.