* h8300.h (IMM4_NS, IMM8_NS): New.
(h8_opcodes): Replace IMM4 with IMM4_NS in mov.b and mov.w entries.
Likewise IMM8 for mov.w and mov.l. Likewise IMM16U for mov.l.
gas/testsuite
* gas/h8300/h8sx_mov_imm.[sd]: New test.
* gas/h8300/h8300.exp: Run it.