diff --git a/src/cmd/internal/objabi/reloctype.go b/src/cmd/internal/objabi/reloctype.go
index a9c3030181..f60cac2b95 100644
--- a/src/cmd/internal/objabi/reloctype.go
+++ b/src/cmd/internal/objabi/reloctype.go
@@ -250,6 +250,32 @@ const (
 	// TODO(mundaym): remove once variants can be serialized - see issue 14218.
 	R_PCRELDBL
 
+	// Loong64.
+
+	// R_ADDRLOONG64 resolves to the low 12 bits of an external address, by encoding
+	// it into the instruction.
+	R_ADDRLOONG64
+
+	// R_ADDRLOONG64U resolves to the sign-adjusted "upper" 20 bits (bit 5-24) of an
+	// external address, by encoding it into the instruction.
+	R_ADDRLOONG64U
+
+	// R_ADDRLOONG64TLS resolves to the low 12 bits of a TLS address (offset from
+	// thread pointer), by encoding it into the instruction.
+	R_ADDRLOONG64TLS
+
+	// R_ADDRLOONG64TLSU resolves to the high 20 bits of a TLS address (offset from
+	// thread pointer), by encoding it into the instruction.
+	R_ADDRLOONG64TLSU
+
+	// R_CALLLOONG64 resolves to non-PC-relative target address of a CALL (BL/JIRL)
+	// instruction, by encoding the address into the instruction.
+	R_CALLLOONG64
+
+	// R_JMPLOONG64 resolves to non-PC-relative target address of a JMP instruction,
+	// by encoding the address into the instruction.
+	R_JMPLOONG64
+
 	// R_ADDRMIPSU (only used on mips/mips64) resolves to the sign-adjusted "upper" 16
 	// bits (bit 16-31) of an external address, by encoding it into the instruction.
 	R_ADDRMIPSU
@@ -286,7 +312,7 @@ const (
 // the target address in register or memory.
 func (r RelocType) IsDirectCall() bool {
 	switch r {
-	case R_CALL, R_CALLARM, R_CALLARM64, R_CALLMIPS, R_CALLPOWER, R_RISCV_CALL, R_RISCV_CALL_TRAMP:
+	case R_CALL, R_CALLARM, R_CALLARM64, R_CALLLOONG64, R_CALLMIPS, R_CALLPOWER, R_RISCV_CALL, R_RISCV_CALL_TRAMP:
 		return true
 	}
 	return false
@@ -301,6 +327,8 @@ func (r RelocType) IsDirectJump() bool {
 	switch r {
 	case R_JMPMIPS:
 		return true
+	case R_JMPLOONG64:
+		return true
 	}
 	return false
 }
diff --git a/src/cmd/internal/objabi/reloctype_string.go b/src/cmd/internal/objabi/reloctype_string.go
index d1b15b5a19..9756f2a321 100644
--- a/src/cmd/internal/objabi/reloctype_string.go
+++ b/src/cmd/internal/objabi/reloctype_string.go
@@ -65,16 +65,22 @@ func _() {
 	_ = x[R_RISCV_TLS_IE_ITYPE-55]
 	_ = x[R_RISCV_TLS_IE_STYPE-56]
 	_ = x[R_PCRELDBL-57]
-	_ = x[R_ADDRMIPSU-58]
-	_ = x[R_ADDRMIPSTLS-59]
-	_ = x[R_ADDRCUOFF-60]
-	_ = x[R_WASMIMPORT-61]
-	_ = x[R_XCOFFREF-62]
+	_ = x[R_ADDRLOONG64-58]
+	_ = x[R_ADDRLOONG64U-59]
+	_ = x[R_ADDRLOONG64TLS-60]
+	_ = x[R_ADDRLOONG64TLSU-61]
+	_ = x[R_CALLLOONG64-62]
+	_ = x[R_JMPLOONG64-63]
+	_ = x[R_ADDRMIPSU-64]
+	_ = x[R_ADDRMIPSTLS-65]
+	_ = x[R_ADDRCUOFF-66]
+	_ = x[R_WASMIMPORT-67]
+	_ = x[R_XCOFFREF-68]
 }
 
-const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_USEIFACER_USEIFACEMETHODR_USEGENERICIFACEMETHODR_METHODOFFR_KEEPR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFSECREFR_DWARFFILEREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_ARM64_GOTR_ARM64_PCRELR_ARM64_LDST8R_ARM64_LDST16R_ARM64_LDST32R_ARM64_LDST64R_ARM64_LDST128R_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_RISCV_CALLR_RISCV_CALL_TRAMPR_RISCV_PCREL_ITYPER_RISCV_PCREL_STYPER_RISCV_TLS_IE_ITYPER_RISCV_TLS_IE_STYPER_PCRELDBLR_ADDRMIPSUR_ADDRMIPSTLSR_ADDRCUOFFR_WASMIMPORTR_XCOFFREF"
+const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_USEIFACER_USEIFACEMETHODR_USEGENERICIFACEMETHODR_METHODOFFR_KEEPR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFSECREFR_DWARFFILEREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_ARM64_GOTR_ARM64_PCRELR_ARM64_LDST8R_ARM64_LDST16R_ARM64_LDST32R_ARM64_LDST64R_ARM64_LDST128R_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_RISCV_CALLR_RISCV_CALL_TRAMPR_RISCV_PCREL_ITYPER_RISCV_PCREL_STYPER_RISCV_TLS_IE_ITYPER_RISCV_TLS_IE_STYPER_PCRELDBLR_ADDRLOONG64R_ADDRLOONG64UR_ADDRLOONG64TLSR_ADDRLOONG64TLSUR_CALLLOONG64R_JMPLOONG64R_ADDRMIPSUR_ADDRMIPSTLSR_ADDRCUOFFR_WASMIMPORTR_XCOFFREF"
 
-var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 53, 59, 68, 79, 88, 99, 109, 116, 123, 131, 139, 147, 153, 159, 165, 175, 184, 194, 210, 233, 244, 250, 261, 271, 280, 293, 307, 321, 335, 351, 362, 375, 388, 402, 416, 430, 445, 459, 473, 484, 498, 513, 530, 548, 569, 581, 599, 618, 637, 657, 677, 687, 698, 711, 722, 734, 744}
+var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 53, 59, 68, 79, 88, 99, 109, 116, 123, 131, 139, 147, 153, 159, 165, 175, 184, 194, 210, 233, 244, 250, 261, 271, 280, 293, 307, 321, 335, 351, 362, 375, 388, 402, 416, 430, 445, 459, 473, 484, 498, 513, 530, 548, 569, 581, 599, 618, 637, 657, 677, 687, 700, 714, 730, 747, 760, 772, 783, 796, 807, 819, 829}
 
 func (i RelocType) String() string {
 	i -= 1