Index: lld/ELF/Arch/SPARCV9.cpp
===================================================================
--- lld/ELF/Arch/SPARCV9.cpp
+++ lld/ELF/Arch/SPARCV9.cpp
@@ -55,6 +55,14 @@
   case R_SPARC_UA32:
   case R_SPARC_64:
   case R_SPARC_UA64:
+  case R_SPARC_H44:
+  case R_SPARC_M44:
+  case R_SPARC_L44:
+  case R_SPARC_HH22:
+  case R_SPARC_HM10:
+  case R_SPARC_LM22:
+  case R_SPARC_HI22:
+  case R_SPARC_LO10:
     return R_ABS;
   case R_SPARC_PC10:
   case R_SPARC_PC22:
@@ -69,6 +77,9 @@
     return R_PLT_PC;
   case R_SPARC_NONE:
     return R_NONE;
+  case R_SPARC_TLS_LE_HIX22:
+  case R_SPARC_TLS_LE_LOX10:
+    return R_TLS;
   default:
     error(getErrorLocation(loc) + "unknown relocation (" + Twine(type) +
           ") against symbol " + toString(s));
@@ -103,9 +114,15 @@
     break;
   case R_SPARC_GOT22:
   case R_SPARC_PC22:
+  case R_SPARC_LM22:
     // T-imm22
     write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 10) & 0x003fffff));
     break;
+  case R_SPARC_HI22:
+    // V-imm22
+    checkUInt(loc, val >> 10, 22, rel);
+    write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 10) & 0x003fffff));
+    break;
   case R_SPARC_WDISP19:
     // V-disp19
     checkInt(loc, val, 21, rel);
@@ -116,11 +133,45 @@
     // T-simm10
     write32be(loc, (read32be(loc) & ~0x000003ff) | (val & 0x000003ff));
     break;
+  case R_SPARC_LO10:
+    // T-simm13
+    write32be(loc, (read32be(loc) & ~0x00001fff) | (val & 0x000003ff));
+    break;
   case R_SPARC_64:
   case R_SPARC_UA64:
     // V-xword64
     write64be(loc, val);
     break;
+  case R_SPARC_HH22:
+    // V-imm22
+    checkUInt(loc, val >> 42, 22, rel);
+    write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 42) & 0x003fffff));
+    break;
+  case R_SPARC_HM10:
+    // T-simm13
+    write32be(loc, (read32be(loc) & ~0x00001fff) | ((val >> 32) & 0x000003ff));
+    break;
+  case R_SPARC_H44:
+    // V-imm22
+    checkUInt(loc, val >> 22, 22, rel);
+    write32be(loc, (read32be(loc) & ~0x003fffff) | ((val >> 22) & 0x003fffff));
+    break;
+  case R_SPARC_M44:
+    // T-imm10
+    write32be(loc, (read32be(loc) & ~0x000003ff) | ((val >> 12) & 0x000003ff));
+    break;
+  case R_SPARC_L44:
+    // T-imm13
+    write32be(loc, (read32be(loc) & ~0x00001fff) | (val & 0x00000fff));
+    break;
+  case R_SPARC_TLS_LE_HIX22:
+    // T-imm22
+    write32be(loc, (read32be(loc) & ~0x003fffff) | ((~val >> 10) & 0x003fffff));
+    break;
+  case R_SPARC_TLS_LE_LOX10:
+    // T-simm13
+    write32be(loc, (read32be(loc) & ~0x00001fff) | (val & 0x000003ff) | 0x1C00);
+    break;
   default:
     llvm_unreachable("unknown relocation");
   }
Index: lld/ELF/Driver.cpp
===================================================================
--- lld/ELF/Driver.cpp
+++ lld/ELF/Driver.cpp
@@ -148,6 +148,7 @@
           .Cases("elf_amd64", "elf_x86_64", {ELF64LEKind, EM_X86_64})
           .Case("elf_i386", {ELF32LEKind, EM_386})
           .Case("elf_iamcu", {ELF32LEKind, EM_IAMCU})
+          .Case("elf64_sparc", {ELF64BEKind, EM_SPARCV9})
           .Default({ELFNoneKind, EM_NONE});
 
   if (ret.first == ELFNoneKind)
Index: lld/ELF/InputSection.cpp
===================================================================
--- lld/ELF/InputSection.cpp
+++ lld/ELF/InputSection.cpp
@@ -650,6 +650,7 @@
 
     // Variant 2.
   case EM_HEXAGON:
+  case EM_SPARCV9:
   case EM_386:
   case EM_X86_64:
     return s.getVA(0) - tls->p_memsz -
Index: lld/test/ELF/sparcv9-reloc.s
===================================================================
--- /dev/null
+++ lld/test/ELF/sparcv9-reloc.s
@@ -0,0 +1,39 @@
+# REQUIRES: sparc
+# RUN: llvm-mc -filetype=obj -triple=sparcv9 %s -o %t.o
+# RUN: ld.lld %t.o --defsym=a=0x0123456789ABCDEF --defsym=b=0x0123456789A --defsym=c=0x01234567 -o %t
+# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s
+# RUN: llvm-objdump -s --no-show-raw-insn %t | FileCheck --check-prefix=HEX %s
+
+## R_SPARC_HH22, R_SPARC_HM10
+.section .ABS_64,"ax",@progbits
+  sethi %hh(a), %o0
+  or    %o0, %hm(a), %o0
+# CHECK-LABEL: section .ABS_64:
+# CHECK: sethi 18641, %o0
+# CHECK-NEXT: or %o0, 359, %o0
+
+## R_SPARC_H44, R_SPARC_M44, R_SPARC_L44
+.section .ABS_44,"ax",@progbits
+  sethi %h44(b), %o0
+  or    %o0, %m44(b), %o0
+  sllx  %o0, 12, %o0
+  or    %o0, %l44(b), %o0
+# CHECK-LABEL: section .ABS_44:
+# CHECK: sethi 18641, %o0
+# CHECK: or %o0, 359, %o0
+# CHECK: or %o0, 2202, %o0
+
+## R_SPARC_HI22, R_SPARC_LO10
+.section .ABS_32,"ax",@progbits
+  sethi %hi(c), %o0
+  or    %o0, %lo(c), %o0
+# CHECK-LABEL: section .ABS_32:
+# CHECK: sethi 18641, %o0
+# CHECK-NEXT: or %o0, 359, %o0
+
+## R_SPARC_64, R_SPARC_32
+.section .ABS_DATA,"ax",@progbits
+  .quad a
+  .long c
+# HEX-LABEL: section .ABS_DATA:
+# HEX-NEXT: 01234567 89abcdef 01234567
Index: lld/test/ELF/sparcv9-tls-le.s
===================================================================
--- /dev/null
+++ lld/test/ELF/sparcv9-tls-le.s
@@ -0,0 +1,17 @@
+# REQUIRES: sparc
+# RUN: llvm-mc -filetype=obj -triple=sparcv9 %s -o %t.o
+# RUN: ld.lld %t.o -o %t
+# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck --check-prefix=LE %s
+
+## %hix(@tpoff(a)) = ~(st_value(a) - 1026) >> 10 = 1
+## %lo(@tpoff(a)) = (st_value(a) - 1026) & 0x3ff | 0x1c00 = -2 (0x1ffe)
+sethi %tle_hix22(a), %o0
+xor   %o0, %tle_lox10(a), %o0
+# LE: sethi 1, %o0
+# LE-NEXT: xor %o0, -2, %o0
+
+.section .tbss
+.globl a
+a:
+.zero 1024+2
+b: