From: Kevin Enderby <enderby@apple.com>
Date: Thu, 18 Oct 2012 21:49:18 +0000 (+0000)
Subject: Fix a bug where a 32-bit address with the high bit does not get symbolicated
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=88d12663abdac344f312b09edfe4934143436132;p=oota-llvm.git

Fix a bug where a 32-bit address with the high bit does not get symbolicated
because the value is incorrectly being signed extended when passed to
SymbolLookUp().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166234 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
index bf0dabb4a0f..d2b1cc37f21 100644
--- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
+++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
@@ -525,8 +525,9 @@ static bool tryAddingSymbolicOperand(uint64_t Address, int32_t Value,
     else
        ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
     const char *ReferenceName;
-    const char *Name = SymbolLookUp(DisInfo, Value, &ReferenceType, Address,
-                                    &ReferenceName);
+    uint64_t SymbolValue = 0x00000000ffffffffULL & Value;
+    const char *Name = SymbolLookUp(DisInfo, SymbolValue, &ReferenceType,
+                                    Address, &ReferenceName);
     if (Name) {
       SymbolicOp.AddSymbol.Name = Name;
       SymbolicOp.AddSymbol.Present = true;