Modified the register matcher function in AsmMatcher to

[oota-llvm.git] / lib / Target / X86 / X86ELFWriterInfo.cpp

diff --git a/lib/Target/X86/X86ELFWriterInfo.cpp b/lib/Target/X86/X86ELFWriterInfo.cpp
index 9be7021a49ef430029f10ebcad778780363ac685..1597d2b31d2223e92dd801ad9d7d92c059efc087 100644 (file)
--- a/lib/Target/X86/X86ELFWriterInfo.cpp
+++ b/lib/Target/X86/X86ELFWriterInfo.cpp
@@ -39,11 +39,13 @@ unsigned X86ELFWriterInfo::getRelocationType(unsigned MachineRelTy) const {
       return R_X86_64_PC32;
     case X86::reloc_absolute_word:
       return R_X86_64_32;
+    case X86::reloc_absolute_word_sext:
+      return R_X86_64_32S;
     case X86::reloc_absolute_dword:
       return R_X86_64_64;
     case X86::reloc_picrel_word:
     default:
-      LLVM_UNREACHABLE("unknown relocation type");
+      llvm_unreachable("unknown x86_64 machine relocation type");
     }
   } else {
     switch(MachineRelTy) {
@@ -51,23 +53,101 @@ unsigned X86ELFWriterInfo::getRelocationType(unsigned MachineRelTy) const {
       return R_386_PC32;
     case X86::reloc_absolute_word:
       return R_386_32;
+    case X86::reloc_absolute_word_sext:
     case X86::reloc_absolute_dword:
     case X86::reloc_picrel_word:
     default:
-      LLVM_UNREACHABLE("unknown relocation type");
+      llvm_unreachable("unknown x86 machine relocation type");
     }
   }
   return 0;
 }
 
-long int X86ELFWriterInfo::getAddendForRelTy(unsigned RelTy) const {
+long int X86ELFWriterInfo::getDefaultAddendForRelTy(unsigned RelTy,
+                                                    long int Modifier) const {
   if (is64Bit) {
     switch(RelTy) {
-    case R_X86_64_PC32: return -4;
-      break;
+    case R_X86_64_PC32: return Modifier - 4;
+    case R_X86_64_32:
+    case R_X86_64_32S:
+    case R_X86_64_64:
+      return Modifier;
     default:
-      LLVM_UNREACHABLE("unknown x86 relocation type");
+      llvm_unreachable("unknown x86_64 relocation type");
+    }
+  } else {
+    switch(RelTy) {
+      case R_386_PC32: return Modifier - 4;
+      case R_386_32: return Modifier;
+    default:
+      llvm_unreachable("unknown x86 relocation type");
+    }
+  }
+  return 0;
+}
+
+unsigned X86ELFWriterInfo::getRelocationTySize(unsigned RelTy) const {
+  if (is64Bit) {
+    switch(RelTy) {
+      case R_X86_64_PC32:
+      case R_X86_64_32:
+      case R_X86_64_32S:
+        return 32;
+      case R_X86_64_64:
+        return 64;
+    default:
+      llvm_unreachable("unknown x86_64 relocation type");
+    }
+  } else {
+    switch(RelTy) {
+      case R_386_PC32:
+      case R_386_32:
+        return 32;
+    default:
+      llvm_unreachable("unknown x86 relocation type");
     }
   }
   return 0;
 }
+
+bool X86ELFWriterInfo::isPCRelativeRel(unsigned RelTy) const {
+  if (is64Bit) {
+    switch(RelTy) {
+      case R_X86_64_PC32:
+        return true;
+      case R_X86_64_32:
+      case R_X86_64_32S:
+      case R_X86_64_64:
+        return false;
+    default:
+      llvm_unreachable("unknown x86_64 relocation type");
+    }
+  } else {
+    switch(RelTy) {
+      case R_386_PC32:
+        return true;
+      case R_386_32:
+        return false;
+    default:
+      llvm_unreachable("unknown x86 relocation type");
+    }
+  }
+  return 0;
+}
+
+unsigned X86ELFWriterInfo::getAbsoluteLabelMachineRelTy() const {
+  return is64Bit ?
+    X86::reloc_absolute_dword : X86::reloc_absolute_word;
+}
+
+long int X86ELFWriterInfo::computeRelocation(unsigned SymOffset,
+                                             unsigned RelOffset,
+                                             unsigned RelTy) const {
+
+  if (RelTy == R_X86_64_PC32 || RelTy == R_386_PC32)
+    return SymOffset - (RelOffset + 4);
+  else
+    assert("computeRelocation unknown for this relocation type");
+
+  return 0;
+}