ARM: add support for R_ARM_ABS8 relocations

Add support for R_ARM_ABS8 relocation.  Addresses PR22126.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225507 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp b/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
index 45e02338e8d75ee61cd78f1b528a77ee7a80fb1a..0489caa69a30b43e6b1c620596c8301eedfb7e40 100644 (file)
--- a/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp
@@ -148,6 +148,14 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target,
   } else {
     switch ((unsigned)Fixup.getKind()) {
     default: llvm_unreachable("invalid fixup kind!");
+    case FK_Data_1:
+      switch (Modifier) {
+      default: llvm_unreachable("unsupported Modifier");
+      case MCSymbolRefExpr::VK_None:
+        Type = ELF::R_ARM_ABS8;
+        break;
+      }
+      break;
     case FK_Data_4:
       switch (Modifier) {
       default: llvm_unreachable("Unsupported Modifier");

diff --git a/test/MC/ARM/reloc-abs8.s b/test/MC/ARM/reloc-abs8.s
new file mode 100644 (file)
index 0000000..716f0ff
--- /dev/null
+++ b/test/MC/ARM/reloc-abs8.s
@@ -0,0 +1,10 @@
+@ RUN: llvm-mc -triple armv7-eabi -filetype obj -o - %s | llvm-objdump -r - \
+@ RUN:     | FileCheck %s
+
+       .syntax unified
+
+       .byte abs8_0 -128
+       .byte abs8_1 +255
+
+@ CHECK: 0 R_ARM_ABS8 abs8_0
+@ CHECK: 1 R_ARM_ABS8 abs8_1