Index: head/sys/sys/elf_common.h
===================================================================
--- head/sys/sys/elf_common.h
+++ head/sys/sys/elf_common.h
@@ -369,6 +369,15 @@
 #define	EF_PPC_RELOCATABLE	0x00010000
 #define	EF_PPC_RELOCATABLE_LIB	0x00008000
 
+#define	EF_RISCV_RVC		0x00000001
+#define	EF_RISCV_FLOAT_ABI_MASK	0x00000006
+#define	EF_RISCV_FLOAT_ABI_SOFT	0x00000000
+#define	EF_RISCV_FLOAT_ABI_SINGLE 0x000002
+#define	EF_RISCV_FLOAT_ABI_DOUBLE 0x000004
+#define	EF_RISCV_FLOAT_ABI_QUAD	0x00000006
+#define	EF_RISCV_RVE		0x00000008
+#define	EF_RISCV_TSO		0x00000010
+
 #define	EF_SPARC_EXT_MASK	0x00ffff00
 #define	EF_SPARC_32PLUS		0x00000100
 #define	EF_SPARC_SUN_US1	0x00000200
@@ -1310,6 +1319,17 @@
 #define	R_RISCV_ALIGN		43
 #define	R_RISCV_RVC_BRANCH	44
 #define	R_RISCV_RVC_JUMP	45
+#define	R_RISCV_RVC_LUI		46
+#define	R_RISCV_GPREL_I		47
+#define	R_RISCV_GPREL_S		48
+#define	R_RISCV_TPREL_I		49
+#define	R_RISCV_TPREL_S		50
+#define	R_RISCV_RELAX		51
+#define	R_RISCV_SUB6		52
+#define	R_RISCV_SET6		53
+#define	R_RISCV_SET8		54
+#define	R_RISCV_SET16		55
+#define	R_RISCV_SET32		56
 
 #define	R_SPARC_NONE		0
 #define	R_SPARC_8		1