MC: Move target specific fixup info descriptors to TargetAsmBackend instead of

the MCCodeEmitter, which seems like a better organization.
 - Also, cleaned up some magic constants while in the area.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121953 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 21 insertions, 0 deletions

diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp
index f251585f3b..202957a1fb 100644
--- a/lib/Target/X86/X86AsmBackend.cpp
+++ b/lib/Target/X86/X86AsmBackend.cpp
@@ -13,6 +13,7 @@
 #include "llvm/ADT/Twine.h"
 #include "llvm/MC/MCAssembler.h"
 #include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCFixupKindInfo.h"
 #include "llvm/MC/MCObjectFormat.h"
 #include "llvm/MC/MCObjectWriter.h"
 #include "llvm/MC/MCSectionCOFF.h"
@@ -49,6 +50,26 @@ public:
   X86AsmBackend(const Target &T)
     : TargetAsmBackend() {}
 
+  unsigned getNumFixupKinds() const {
+    return X86::NumTargetFixupKinds;
+  }
+
+  const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const {
+    const static MCFixupKindInfo Infos[X86::NumTargetFixupKinds] = {
+      { "reloc_riprel_4byte", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel },
+      { "reloc_riprel_4byte_movq_load", 0, 4 * 8, MCFixupKindInfo::FKF_IsPCRel},
+      { "reloc_signed_4byte", 0, 4 * 8, 0},
+      { "reloc_global_offset_table", 0, 4 * 8, 0}
+    };
+
+    if (Kind < FirstTargetFixupKind)
+      return TargetAsmBackend::getFixupKindInfo(Kind);
+
+    assert(unsigned(Kind - FirstTargetFixupKind) < getNumFixupKinds() &&
+           "Invalid kind!");
+    return Infos[Kind - FirstTargetFixupKind];
+  }
+
   void ApplyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
                   uint64_t Value) const {
     unsigned Size = 1 << getFixupKindLog2Size(Fixup.getKind());