commit 8754ed86fff3f2f793d37fb71725630f720bbfb7
Author: Shawn Webb <shawn.webb@hardenedbsd.org>
Date:   Mon Dec 19 14:05:55 2016 -0500

    HBSD: Perform R_AARCH64_TLSDESC fixups
    
    This enables full use of ld.lld on arm64.
    
    Signed-off-by:  Shawn Webb <shawn.webb@hardenedbsd.org>
    freebsd-issue:  PR214971

diff --git a/libexec/rtld-elf/aarch64/reloc.c b/libexec/rtld-elf/aarch64/reloc.c
index 3f9de07db29..e88c98b04aa 100644
--- a/libexec/rtld-elf/aarch64/reloc.c
+++ b/libexec/rtld-elf/aarch64/reloc.c
@@ -388,6 +388,16 @@ reloc_non_plt(Obj_Entry *obj, Obj_Entry *obj_rtld, int flags,
 			*where = def->st_value + rela->r_addend +
 			    defobj->tlsoffset;
 			break;
+		case R_AARCH64_TLSDESC:
+			if (ELF_R_SYM(rela->r_info) == 0) {
+				where[0] = (Elf_Addr)_rtld_tlsdesc;
+				where[1] = obj->tlsoffset + rela->r_addend;
+			} else {
+				where[0] = (Elf_Addr)_rtld_tlsdesc_dynamic;
+				where[1] = (Elf_Addr)reloc_tlsdesc_alloc(obj,
+				    rela);
+			}
+			break;
 		case R_AARCH64_RELATIVE:
 			*where = (Elf_Addr)(obj->relocbase + rela->r_addend);
 			break;