as implements all the standard SH64 opcodes. In addition, the following pseudo-opcodes may be expanded into one or more alternate opcodes:

movi

If the value doesn't fit into a standard movi opcode, as will replace the movi with a sequence of movi and shori opcodes.

pt

This expands to a sequence of movi and shori opcode, followed by a ptrel opcode, or to a pta or ptb opcode, depending on the label referenced.