as: AArch64 Opcodes

 
 9.1.6 Opcodes
 -------------
 
 GAS implements all the standard AArch64 opcodes.  It also implements
 several pseudo opcodes, including several synthetic load instructions.
 
 'LDR ='
             ldr <register> , =<expression>
 
      The constant expression will be placed into the nearest literal
      pool (if it not already there) and a PC-relative LDR instruction
      will be generated.
 
    For more information on the AArch64 instruction set and assembly
 language notation, see 'ARMv8 Instruction Set Overview' available at
 <http://infocenter.arm.com>.