Index: contrib/elftoolchain/readelf/readelf.c
===================================================================
--- contrib/elftoolchain/readelf/readelf.c
+++ contrib/elftoolchain/readelf/readelf.c
@@ -2080,6 +2080,74 @@
 		case 49: return "ldtr";
 		default: return (NULL);
 		}
+	case EM_RISCV:
+		switch (reg) {
+		case 0: return "zero";
+		case 1: return "ra";
+		case 2: return "sp";
+		case 3: return "gp";
+		case 4: return "tp";
+		case 5: return "t0";
+		case 6: return "t1";
+		case 7: return "t2";
+		case 8: return "s0";
+		case 9: return "s1";
+		case 10: return "a0";
+		case 11: return "a1";
+		case 12: return "a2";
+		case 13: return "a3";
+		case 14: return "a4";
+		case 15: return "a5";
+		case 16: return "a6";
+		case 17: return "a7";
+		case 18: return "s2";
+		case 19: return "s3";
+		case 20: return "s4";
+		case 21: return "s5";
+		case 22: return "s6";
+		case 23: return "s7";
+		case 24: return "s8";
+		case 25: return "s9";
+		case 26: return "s10";
+		case 27: return "s11";
+		case 28: return "t3";
+		case 29: return "t4";
+		case 30: return "t5";
+		case 31: return "t6";
+		case 32: return "ft0";
+		case 33: return "ft1";
+		case 34: return "ft2";
+		case 35: return "ft3";
+		case 36: return "ft4";
+		case 37: return "ft5";
+		case 38: return "ft6";
+		case 39: return "ft7";
+		case 40: return "fs0";
+		case 41: return "fs1";
+		case 42: return "fa0";
+		case 43: return "fa1";
+		case 44: return "fa2";
+		case 45: return "fa3";
+		case 46: return "fa4";
+		case 47: return "fa5";
+		case 48: return "fa6";
+		case 49: return "fa7";
+		case 50: return "fs2";
+		case 51: return "fs3";
+		case 52: return "fs4";
+		case 53: return "fs5";
+		case 54: return "fs6";
+		case 55: return "fs7";
+		case 56: return "fs8";
+		case 57: return "fs9";
+		case 58: return "fs10";
+		case 59: return "fs11";
+		case 60: return "ft8";
+		case 61: return "ft9";
+		case 62: return "ft10";
+		case 63: return "ft11";
+		default: return (NULL);
+		}
 	case EM_X86_64:
 		switch (reg) {
 		case 0: return "rax";