1 files changed, 73 insertions, 0 deletions
diff --git a/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp b/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp
new file mode 100644
index 0000000000..3b2ced624a
--- /dev/null
+++ b/lib/Target/Mips/MCTargetDesc/MipsMCExpr.cpp
@@ -0,0 +1,73 @@
+//===-- MipsMCExpr.cpp - Mips specific MC expression classes --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "mipsmcexpr"
+#include "MipsMCExpr.h"
+#include "llvm/MC/MCAssembler.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCAsmInfo.h"
+
+using namespace llvm;
+
+const MipsMCExpr*
+MipsMCExpr::Create(VariantKind Kind, const MCExpr *Expr,
+                   MCContext &Ctx) {
+  return new (Ctx) MipsMCExpr(Kind, Expr);
+}
+
+void MipsMCExpr::PrintImpl(raw_ostream &OS) const {
+  switch (Kind) {
+  default: llvm_unreachable("Invalid kind!");
+  case VK_Mips_ABS_LO: OS << "%lo"; break;
+  case VK_Mips_ABS_HI: OS << "%hi"; break;
+  }
+
+  OS << '(';
+  Expr->print(OS);
+  OS << ')';
+}
+
+bool
+MipsMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
+                                      const MCAsmLayout *Layout) const {
+  if (!Layout)
+    return false;
+  return getSubExpr()->EvaluateAsRelocatable(Res, *Layout);
+}
+
+// FIXME: This basically copies MCObjectStreamer::AddValueSymbols. Perhaps
+// that method should be made public?
+static void AddValueSymbolsImpl(const MCExpr *Value, MCAssembler *Asm) {
+  switch (Value->getKind()) {
+  case MCExpr::Target:
+    llvm_unreachable("Can't handle nested target expr!");
+
+  case MCExpr::Constant:
+    break;
+
+  case MCExpr::Binary: {
+    const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
+    AddValueSymbolsImpl(BE->getLHS(), Asm);
+    AddValueSymbolsImpl(BE->getRHS(), Asm);
+    break;
+  }
+
+  case MCExpr::SymbolRef:
+    Asm->getOrCreateSymbolData(cast<MCSymbolRefExpr>(Value)->getSymbol());
+    break;
+
+  case MCExpr::Unary:
+    AddValueSymbolsImpl(cast<MCUnaryExpr>(Value)->getSubExpr(), Asm);
+    break;
+  }
+}
+
+void MipsMCExpr::AddValueSymbols(MCAssembler *Asm) const {
+  AddValueSymbolsImpl(getSubExpr(), Asm);
+}