[llvm-commits] [llvm] r153493 - /llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h
Akira Hatanaka
ahatanaka at mips.com
Mon Mar 26 19:04:18 PDT 2012
Author: ahatanak
Date: Mon Mar 26 21:04:18 2012
New Revision: 153493
URL: http://llvm.org/viewvc/llvm-project?rev=153493&view=rev
Log:
Define function MipsGetSymAndOffset which returns a fixup's symbol and the
offset applied to it.
Modified:
llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h
Modified: llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h?rev=153493&r1=153492&r2=153493&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h (original)
+++ llvm/trunk/lib/Target/Mips/MCTargetDesc/MipsBaseInfo.h Mon Mar 26 21:04:18 2012
@@ -14,7 +14,9 @@
#ifndef MIPSBASEINFO_H
#define MIPSBASEINFO_H
+#include "MipsFixupKinds.h"
#include "MipsMCTargetDesc.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ErrorHandling.h"
@@ -198,6 +200,34 @@
default: llvm_unreachable("Unknown register number!");
}
}
+
+inline static std::pair<const MCSymbolRefExpr*, int64_t>
+MipsGetSymAndOffset(const MCFixup &Fixup) {
+ MCFixupKind FixupKind = Fixup.getKind();
+
+ if ((FixupKind < FirstTargetFixupKind) ||
+ (FixupKind >= MCFixupKind(Mips::LastTargetFixupKind)))
+ return std::make_pair((const MCSymbolRefExpr*)0, (int64_t)0);
+
+ const MCExpr *Expr = Fixup.getValue();
+ MCExpr::ExprKind Kind = Expr->getKind();
+
+ if (Kind == MCExpr::Binary) {
+ const MCBinaryExpr *BE = static_cast<const MCBinaryExpr*>(Expr);
+ const MCExpr *LHS = BE->getLHS();
+ const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(BE->getRHS());
+
+ if ((LHS->getKind() != MCExpr::SymbolRef) || !CE)
+ return std::make_pair((const MCSymbolRefExpr*)0, (int64_t)0);
+
+ return std::make_pair(cast<MCSymbolRefExpr>(LHS), CE->getValue());
+ }
+
+ if (Kind != MCExpr::SymbolRef)
+ return std::make_pair((const MCSymbolRefExpr*)0, (int64_t)0);
+
+ return std::make_pair(cast<MCSymbolRefExpr>(Expr), 0);
+}
}
#endif
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