5 files changed, 23 insertions, 0 deletions

diff --git a/lib/Target/X86/Disassembler/CMakeLists.txt b/lib/Target/X86/Disassembler/CMakeLists.txt
index 2a83a9c26858c..9f91060179e6d 100644
--- a/lib/Target/X86/Disassembler/CMakeLists.txt
+++ b/lib/Target/X86/Disassembler/CMakeLists.txt
@@ -4,4 +4,11 @@ add_llvm_library(LLVMX86Disassembler
   X86Disassembler.cpp
   X86DisassemblerDecoder.c
   )
+# workaround for hanging compilation on MSVC9
+if( MSVC_VERSION EQUAL 1500 )
+set_property(
+  SOURCE X86Disassembler.cpp
+  PROPERTY COMPILE_FLAGS "/Od"
+  )
+endif()
 add_dependencies(LLVMX86Disassembler X86CodeGenTable_gen)
diff --git a/lib/Target/X86/Disassembler/X86Disassembler.cpp b/lib/Target/X86/Disassembler/X86Disassembler.cpp
index 7328dc0ba8d76..62e7357b8f34b 100644
--- a/lib/Target/X86/Disassembler/X86Disassembler.cpp
+++ b/lib/Target/X86/Disassembler/X86Disassembler.cpp
@@ -17,6 +17,7 @@
 #include "X86Disassembler.h"
 #include "X86DisassemblerDecoder.h"
 
+#include "llvm/MC/EDInstInfo.h"
 #include "llvm/MC/MCDisassembler.h"
 #include "llvm/MC/MCDisassembler.h"
 #include "llvm/MC/MCInst.h"
@@ -26,6 +27,7 @@
 #include "llvm/Support/raw_ostream.h"
 
 #include "X86GenRegisterNames.inc"
+#include "X86GenEDInfo.inc"
 
 using namespace llvm;
 using namespace llvm::X86Disassembler;
@@ -69,6 +71,10 @@ X86GenericDisassembler::X86GenericDisassembler(DisassemblerMode mode) :
 X86GenericDisassembler::~X86GenericDisassembler() {
 }
 
+EDInstInfo *X86GenericDisassembler::getEDInfo() const {
+  return instInfoX86;
+}
+
 /// regionReader - a callback function that wraps the readByte method from
 ///   MemoryObject.
 ///
diff --git a/lib/Target/X86/Disassembler/X86Disassembler.h b/lib/Target/X86/Disassembler/X86Disassembler.h
index 0e6e0b0e519f4..9c542628d7093 100644
--- a/lib/Target/X86/Disassembler/X86Disassembler.h
+++ b/lib/Target/X86/Disassembler/X86Disassembler.h
@@ -94,6 +94,8 @@ namespace llvm {
 class MCInst;
 class MemoryObject;
 class raw_ostream;
+
+struct EDInstInfo;
   
 namespace X86Disassembler {
 
@@ -115,6 +117,9 @@ public:
                       const MemoryObject &region,
                       uint64_t address,
                       raw_ostream &vStream) const;
+
+  /// getEDInfo - See MCDisassembler.
+  EDInstInfo *getEDInfo() const;
 private:
   DisassemblerMode              fMode;
 };
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
index db694bc2f3c58..64f6b2dc7e8b1 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -1277,6 +1277,9 @@ static int readOperands(struct InternalInstruction* insn) {
     case ENCODING_IB:
       if (readImmediate(insn, 1))
         return -1;
+      if (insn->spec->operands[index].type == TYPE_IMM3 &&
+          insn->immediates[insn->numImmediatesConsumed - 1] > 7)
+        return -1;
       break;
     case ENCODING_IW:
       if (readImmediate(insn, 2))
@@ -1293,6 +1296,7 @@ static int readOperands(struct InternalInstruction* insn) {
     case ENCODING_Iv:
       if (readImmediate(insn, insn->immediateSize))
         return -1;
+      break;
     case ENCODING_Ia:
       if (readImmediate(insn, insn->addressSize))
         return -1;
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h b/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
index c213f89ebc812..4a7cd57f2e23c 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
@@ -236,6 +236,7 @@ struct ContextDecision {
   ENUM_ENTRY(TYPE_IMM16,      "2-byte")                                        \
   ENUM_ENTRY(TYPE_IMM32,      "4-byte")                                        \
   ENUM_ENTRY(TYPE_IMM64,      "8-byte")                                        \
+  ENUM_ENTRY(TYPE_IMM3,       "1-byte immediate operand between 0 and 7")      \
   ENUM_ENTRY(TYPE_RM8,        "1-byte register or memory operand")             \
   ENUM_ENTRY(TYPE_RM16,       "2-byte")                                        \
   ENUM_ENTRY(TYPE_RM32,       "4-byte")                                        \