ELF/AMDGPU: Add support for R_AMDGPU_ABS32

Differential Revision: https://reviews.llvm.org/D21654 llvm-svn: 276295
llvm · Jul 21, 2016 · 667e245 · 667e245
1 parent 1556262
commit 667e245
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/lld/ELF/Target.cpp b/lld/ELF/Target.cpp
@@ -1461,6 +1461,7 @@ AMDGPUTargetInfo::AMDGPUTargetInfo() {
 void AMDGPUTargetInfo::relocateOne(uint8_t *Loc, uint32_t Type,
                                    uint64_t Val) const {
   switch (Type) {
+  case R_AMDGPU_ABS32:
   case R_AMDGPU_GOTPCREL:
   case R_AMDGPU_REL32:
     write32le(Loc, Val);
@@ -1472,6 +1473,8 @@ void AMDGPUTargetInfo::relocateOne(uint8_t *Loc, uint32_t Type,
 
 RelExpr AMDGPUTargetInfo::getRelExpr(uint32_t Type, const SymbolBody &S) const {
   switch (Type) {
+  case R_AMDGPU_ABS32:
+    return R_ABS;
   case R_AMDGPU_REL32:
     return R_PC;
   case R_AMDGPU_GOTPCREL:

diff --git a/lld/test/ELF/amdgpu-relocs.s b/lld/test/ELF/amdgpu-relocs.s
@@ -1,6 +1,7 @@
 # RUN: llvm-mc -filetype=obj -triple=amdgcn--amdhsa -mcpu=fiji %s -o %t.o
 # RUN: ld.lld -shared %t.o -o %t.so
 # RUN: llvm-readobj -r %t.so | FileCheck %s
+# RUN: llvm-objdump -s %t.so | FileCheck %s --check-prefix=OBJDUMP
 
 # REQUIRES: amdgpu
 
@@ -21,7 +22,10 @@ kernel0:
   .weak   weak_var
   .weakref weakref_var, weakref_alias_var
 
-# The relocation for local_var should be resolved by the linker.
+.section nonalloc, "w", @progbits
+  .long var, common_var
+
+# The relocation for local_var and var should be resolved by the linker.
 # CHECK: Relocations [
 # CHECK: .rela.dyn {
 # CHECK-NEXT: R_AMDGPU_ABS64 common_var 0x0
@@ -31,3 +35,6 @@ kernel0:
 # CHECK-NEXT: R_AMDGPU_ABS64 weakref_alias_var 0x0
 # CHECK-NEXT: }
 # CHECK-NEXT: ]
+
+# OBJDUMP: Contents of section nonalloc:
+# OBJDUMP-NEXT: 0000 00000000 00300000