| | 1 | `define INSN_JR_imm 9'b000011000 |
| | 2 | `define INSN_JRCC_imm 9'b0001xx000 |
| | 3 | |
| | 4 | `ifdef EXECUTE |
| | 5 | `INSN_JR_imm,`INSN_JRCC_imm: begin |
| | 6 | case (cycle) |
| | 7 | 0: begin |
| | 8 | `EXEC_INC_PC |
| | 9 | `EXEC_READ(`_PC + 1) |
| | 10 | end |
| | 11 | 1: begin |
| | 12 | `EXEC_INC_PC |
| | 13 | if (opcode[5]) begin // i.e., JP cc,nn |
| | 14 | /* We need to check the condition code to bail out. */ |
| | 15 | case (opcode[4:3]) |
| | 16 | `INSN_cc_NZ: if (`_F[7]) `EXEC_NEWCYCLE |
| | 17 | `INSN_cc_Z: if (~`_F[7]) `EXEC_NEWCYCLE |
| | 18 | `INSN_cc_NC: if (`_F[4]) `EXEC_NEWCYCLE |
| | 19 | `INSN_cc_C: if (~`_F[4]) `EXEC_NEWCYCLE |
| | 20 | endcase |
| | 21 | end |
| | 22 | end |
| | 23 | 2: `EXEC_NEWCYCLE |
| | 24 | endcase |
| | 25 | end |
| | 26 | `endif |
| | 27 | |
| | 28 | `ifdef WRITEBACK |
| | 29 | `INSN_JR_imm,`INSN_JRCC_imm: begin |
| | 30 | case (cycle) |
| | 31 | 0: begin /* type F */ end |
| | 32 | 1: tmp <= rdata; |
| | 33 | 2: `_PC <= `_PC + {tmp[7]?8'hFF:8'h00,tmp}; |
| | 34 | endcase |
| | 35 | end |
| | 36 | `endif |
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