Index: ELF/Target.cpp
===================================================================
--- ELF/Target.cpp
+++ ELF/Target.cpp
@@ -148,6 +148,7 @@
   void writePltEntry(uint8_t *Buf, uint64_t GotAddr, uint64_t GotEntryAddr,
                      uint64_t PltEntryAddr, int32_t Index,
                      unsigned RelOff) const override;
+  bool relocNeedsCopy(uint32_t Type, const SymbolBody &S) const override;
   bool relocNeedsGot(uint32_t Type, const SymbolBody &S) const override;
   bool relocNeedsPlt(uint32_t Type, const SymbolBody &S) const override;
   void relocateOne(uint8_t *Loc, uint8_t *BufEnd, uint32_t Type, uint64_t P,
@@ -847,6 +848,7 @@
 }
 
 AArch64TargetInfo::AArch64TargetInfo() {
+  CopyReloc = R_AARCH64_COPY;
   GotReloc = R_AARCH64_GLOB_DAT;
   PltReloc = R_AARCH64_JUMP_SLOT;
   LazyRelocations = true;
@@ -904,6 +906,29 @@
               GotEntryAddr);
 }
 
+bool AArch64TargetInfo::relocNeedsCopy(uint32_t Type,
+                                       const SymbolBody &S) const {
+  switch (Type) {
+  default:
+    return false;
+  case R_AARCH64_ABS16:
+  case R_AARCH64_ABS32:
+  case R_AARCH64_ABS64:
+  case R_AARCH64_PREL16:
+  case R_AARCH64_PREL32:
+  case R_AARCH64_PREL64:
+  case R_AARCH64_ADR_PREL_LO21:
+  case R_AARCH64_ADR_PREL_PG_HI21:
+  case R_AARCH64_ADD_ABS_LO12_NC:
+  case R_AARCH64_LDST8_ABS_LO12_NC:
+  case R_AARCH64_LDST32_ABS_LO12_NC:
+  case R_AARCH64_LDST64_ABS_LO12_NC:
+    if (auto *SS = dyn_cast<SharedSymbol<ELF64LE>>(&S))
+      return SS->Sym.getType() == STT_OBJECT;
+    return false;
+  }
+}
+
 bool AArch64TargetInfo::relocNeedsGot(uint32_t Type,
                                       const SymbolBody &S) const {
   return Type == R_AARCH64_ADR_GOT_PAGE || Type == R_AARCH64_LD64_GOT_LO12_NC ||
Index: test/ELF/Inputs/relocation-copy.s
===================================================================
--- test/ELF/Inputs/relocation-copy.s
+++ test/ELF/Inputs/relocation-copy.s
@@ -2,21 +2,21 @@
 
 .type x,@object
 .globl x
-.align 16
+.balign 16
 x:
 .long 0
 .size x, 4
 
 .type y,@object
 .globl y
-.align 16
+.balign 16
 y:
 .long 0
 .size y, 4
 
 .type z,@object
 .globl z
-.align 4
+.balign 4
 z:
 .long 0
 .size z, 4
Index: test/ELF/aarch64-copy.s
===================================================================
--- /dev/null
+++ test/ELF/aarch64-copy.s
@@ -0,0 +1,93 @@
+// REQUIRES: aarch64
+// RUN: llvm-mc -filetype=obj -triple=aarch64-pc-freebsd %s -o %t.o
+// RUN: llvm-mc -filetype=obj -triple=aarch64-pc-freebsd %p/Inputs/relocation-copy.s -o %t2.o
+// RUN: ld.lld -shared %t2.o -o %t2.so
+// RUN: ld.lld %t.o %t2.so -o %t3
+// RUN: llvm-readobj -s -r --expand-relocs -symbols %t3 | FileCheck %s
+// RUN: llvm-objdump -d %t3 | FileCheck -check-prefix=CODE %s
+// RUN: llvm-objdump -s -section=.data %t3 | FileCheck -check-prefix=DATA %s
+
+.text
+.globl _start
+_start:
+    adr x1, x
+    adrp x2, y
+    add x2, x2, :lo12:y
+.data
+    .word z
+
+// CHECK:     Name: .bss
+// CHECK-NEXT:     Type: SHT_NOBITS
+// CHECK-NEXT:     Flags [
+// CHECK-NEXT:       SHF_ALLOC
+// CHECK-NEXT:       SHF_WRITE
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Address: 0x120B0
+// CHECK-NEXT:     Offset:
+// CHECK-NEXT:     Size: 24
+// CHECK-NEXT:     Link:
+// CHECK-NEXT:     Info:
+// CHECK-NEXT:     AddressAlignment: 16
+
+// CHECK: Relocations [
+// CHECK-NEXT:   Section ({{.*}}) .rela.dyn {
+// CHECK-NEXT:     Relocation {
+// CHECK-NEXT:       Offset: 0x120B0
+// CHECK-NEXT:       Type: R_AARCH64_COPY
+// CHECK-NEXT:       Symbol: x
+// CHECK-NEXT:       Addend: 0x0
+// CHECK-NEXT:     }
+// CHECK-NEXT:     Relocation {
+// CHECK-NEXT:       Offset: 0x120C0
+// CHECK-NEXT:       Type: R_AARCH64_COPY
+// CHECK-NEXT:       Symbol: y
+// CHECK-NEXT:       Addend: 0x0
+// CHECK-NEXT:     }
+// CHECK-NEXT:     Relocation {
+// CHECK-NEXT:       Offset: 0x120C4
+// CHECK-NEXT:       Type: R_AARCH64_COPY
+// CHECK-NEXT:       Symbol: z
+// CHECK-NEXT:       Addend: 0x0
+// CHECK-NEXT:     }
+// CHECK-NEXT:   }
+// CHECK-NEXT: ]
+
+// CHECK: Symbols [
+// CHECK:     Name: x
+// CHECK-NEXT:     Value: 0x120B0
+// CHECK-NEXT:     Size: 4
+// CHECK-NEXT:     Binding: Global
+// CHECK-NEXT:     Type: Object
+// CHECK-NEXT:     Other:
+// CHECK-NEXT:     Section: .bss
+// CHECK:     Name: y
+// CHECK-NEXT:     Value: 0x120C0
+// CHECK-NEXT:     Size: 4
+// CHECK-NEXT:     Binding: Global
+// CHECK-NEXT:     Type: Object
+// CHECK-NEXT:     Other:
+// CHECK-NEXT:     Section: .bss
+// CHECK:     Name: z
+// CHECK-NEXT:     Value: 0x120C4
+// CHECK-NEXT:     Size: 4
+// CHECK-NEXT:     Binding: Global
+// CHECK-NEXT:     Type: Object
+// CHECK-NEXT:     Other:
+// CHECK-NEXT:     Section: .bss
+// CHECK: ]
+
+// CODE: Disassembly of section .text:
+// CODE-NEXT: _start:
+// S(x) = 0x120B0, A = 0, P = 0x11000
+// S + A - P = 0x10B0 = 4272
+// CODE-NEXT:  11000: {{.*}} adr  x1, #4272
+// S(y) = 0x120C0, A = 0, P = 0x11004
+// Page(S + A) - Page(P) = 0x12000 - 0x11000 = 0x1000 - 4096
+// CODE-NEXT:  11004: {{.*}} adrp x2, #4096
+// S(y) = 0x120C0, A = 0
+// (S + A) & 0xFFF = 0xC0 = 192
+// CODE-NEXT:  11008: {{.*}} add  x2, x2, #192
+
+// DATA: Contents of section .data:
+// S(z) = 0x120c4
+// DATA-NEXT:  120a0 c4200100