PR gas/23956
gas/
* config/tc-riscv.c (validate_riscv_insn) <'1'>: New case.
(percent_op_null): New.
(riscv_ip) <'j'>: Set imm_reloc before p.
<'1'>: New case.
<'0'>: Use percent_op_null and don't set imm_reloc.
<alu_op>: Handle *args == '1'.
* testsuite/gas/riscv/tprel-add.d: New.
* testsuite/gas/riscv/tprel-add.l: New.
* testsuite/gas/riscv/tprel-add.s: New.
opcodes/
* riscv-opc.c (riscv_opcodes) <"add">: Use 1 not 0 for fourth arg.