Cleaned up scripts to generate register definition JSONs (#525)

Author: kathlenemagnus-mips

sparta/scripts/GenRISCVRegisterDefinitions.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+"""Script for generating RISC-V register definition JSON files.
+"""
+
+from enum import Enum
+import os
+
+from GenRegisterJSON import GenRegisterJSON
+from GenRegisterJSON import RegisterGroup
+
+def main():
+    # Make rv64 directory if it doesn't exist
+    if not os.path.exists("rv64"):
+        os.makedirs("rv64")
+    os.chdir("rv64")
+
+    # Generate rv64g int, fp and CSR registers
+    RV64_XLEN = 8
+    VLEN = 32
+    reg_int = GenRegisterJSON(RegisterGroup.INT, 32, RV64_XLEN)
+    reg_fp  = GenRegisterJSON(RegisterGroup.FP,  32, RV64_XLEN)
+    reg_vec = GenRegisterJSON(RegisterGroup.VEC, 32, VLEN)
+    reg_csr = GenRegisterJSON(RegisterGroup.CSR, 0,  RV64_XLEN)
+
+    # Add register for the PC
+    num = 32
+    reg_int.add_custom_register("pc", num, "Program counter", 8, [], {}, 0, True)
+
+    # Add registers for atomic load-reservation and store-conditional instructions
+    num += 1
+    reg_int.add_custom_register("resv_addr", num, "Load reservation address", 8, [], {}, 0, True)
+    num += 1
+    reg_int.add_custom_register("resv_valid", num, "Load reservation valid", 8, [], {}, 0, True)
+
+    reg_int.write_json("reg_int.json")
+    reg_fp.write_json("reg_fp.json")
+    reg_vec.write_json("reg_vec.json")
+    reg_csr.write_json("reg_csr.json")
+
+    # Make rv32 directory if it doesn't exist
+    os.chdir("..")
+    if not os.path.exists("rv32"):
+        os.makedirs("rv32")
+    os.chdir("rv32")
+
+    # Generate rv32g int, fp and CSR registers
+    RV32_XLEN = 4
+    reg_int = GenRegisterJSON(RegisterGroup.INT, 32, RV32_XLEN)
+    reg_fp  = GenRegisterJSON(RegisterGroup.FP,  32, RV32_XLEN)
+    reg_vec = GenRegisterJSON(RegisterGroup.VEC, 32, VLEN)
+    reg_csr = GenRegisterJSON(RegisterGroup.CSR, 0,  RV32_XLEN)
+
+    reg_int.write_json("reg_int.json");
+    reg_fp.write_json("reg_fp.json");
+    reg_vec.write_json("reg_vec.json")
+    reg_csr.write_json("reg_csr.json");
+
+
+if __name__ == "__main__":
+    main()