ARM: implement ldrex, strex and clrex intrinsics

[oota-llvm.git] / lib / MC / MCDisassembler / Disassembler.cpp

diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index d3fa906a0662524de2cbaee598cc8ab3f0cee604..ecc7aff382f35ea00ffb1e6d199ee76d5be31b61 100644 (file)
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -16,7 +16,9 @@
 #include "llvm/MC/MCInstPrinter.h"
 #include "llvm/MC/MCInstrInfo.h"
 #include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCRelocationInfo.h"
 #include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCSymbolizer.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MemoryObject.h"
 #include "llvm/Support/TargetRegistry.h"
@@ -40,45 +42,64 @@ LLVMDisasmContextRef LLVMCreateDisasmCPU(const char *Triple, const char *CPU,
   // Get the target.
   std::string Error;
   const Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
-  assert(TheTarget && "Unable to create target!");
+  if (!TheTarget)
+    return 0;
+
+  const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(Triple);
+  if (!MRI)
+    return 0;
 
   // Get the assembler info needed to setup the MCContext.
-  const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(Triple);
-  assert(MAI && "Unable to create target asm info!");
+  const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(*MRI, Triple);
+  if (!MAI)
+    return 0;
 
   const MCInstrInfo *MII = TheTarget->createMCInstrInfo();
-  assert(MII && "Unable to create target instruction info!");
-
-  const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(Triple);
-  assert(MRI && "Unable to create target register info!");
+  if (!MII)
+    return 0;
 
   // Package up features to be passed to target/subtarget
   std::string FeaturesStr;
 
   const MCSubtargetInfo *STI = TheTarget->createMCSubtargetInfo(Triple, CPU,
                                                                 FeaturesStr);
-  assert(STI && "Unable to create subtarget info!");
+  if (!STI)
+    return 0;
 
   // Set up the MCContext for creating symbols and MCExpr's.
-  MCContext *Ctx = new MCContext(*MAI, *MRI, 0);
-  assert(Ctx && "Unable to create MCContext!");
+  MCContext *Ctx = new MCContext(MAI, MRI, 0);
+  if (!Ctx)
+    return 0;
 
   // Set up disassembler.
   MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI);
-  assert(DisAsm && "Unable to create disassembler!");
-  DisAsm->setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo, Ctx);
+  if (!DisAsm)
+    return 0;
 
+  OwningPtr<MCRelocationInfo> RelInfo(
+    TheTarget->createMCRelocationInfo(Triple, *Ctx));
+  if (!RelInfo)
+    return 0;
+
+  OwningPtr<MCSymbolizer> Symbolizer(
+    TheTarget->createMCSymbolizer(Triple, GetOpInfo, SymbolLookUp, DisInfo,
+                                  Ctx, RelInfo.take()));
+  DisAsm->setSymbolizer(Symbolizer);
+  DisAsm->setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo,
+                                      Ctx, RelInfo);
   // Set up the instruction printer.
   int AsmPrinterVariant = MAI->getAssemblerDialect();
   MCInstPrinter *IP = TheTarget->createMCInstPrinter(AsmPrinterVariant,
                                                      *MAI, *MII, *MRI, *STI);
-  assert(IP && "Unable to create instruction printer!");
+  if (!IP)
+    return 0;
 
   LLVMDisasmContext *DC = new LLVMDisasmContext(Triple, DisInfo, TagType,
                                                 GetOpInfo, SymbolLookUp,
                                                 TheTarget, MAI, MRI,
                                                 STI, MII, Ctx, DisAsm, IP);
-  assert(DC && "Allocation failure!");
+  if (!DC)
+    return 0;
 
   return DC;
 }