Update LLVM to r104832.

4 files changed, 70 insertions, 35 deletions

diff --git a/lib/Target/X86/Disassembler/X86Disassembler.cpp b/lib/Target/X86/Disassembler/X86Disassembler.cpp
index 62e7357..8a5a630 100644
--- a/lib/Target/X86/Disassembler/X86Disassembler.cpp
+++ b/lib/Target/X86/Disassembler/X86Disassembler.cpp
@@ -155,7 +155,57 @@ static void translateRegister(MCInst &mcInst, Reg reg) {
 ///
 /// @param mcInst       - The MCInst to append to.
 /// @param immediate    - The immediate value to append.
-static void translateImmediate(MCInst &mcInst, uint64_t immediate) {
+/// @param operand      - The operand, as stored in the descriptor table.
+/// @param insn         - The internal instruction.
+static void translateImmediate(MCInst &mcInst, 
+                               uint64_t immediate, 
+                               OperandSpecifier &operand,
+                               InternalInstruction &insn) {
+  // Sign-extend the immediate if necessary.
+
+  OperandType type = operand.type;
+
+  if (type == TYPE_RELv) {
+    switch (insn.displacementSize) {
+    default:
+      break;
+    case 8:
+      type = TYPE_MOFFS8;
+      break;
+    case 16:
+      type = TYPE_MOFFS16;
+      break;
+    case 32:
+      type = TYPE_MOFFS32;
+      break;
+    case 64:
+      type = TYPE_MOFFS64;
+      break;
+    }
+  }
+
+  switch (type) {
+  case TYPE_MOFFS8:
+  case TYPE_REL8:
+    if(immediate & 0x80)
+      immediate |= ~(0xffull);
+    break;
+  case TYPE_MOFFS16:
+    if(immediate & 0x8000)
+      immediate |= ~(0xffffull);
+    break;
+  case TYPE_MOFFS32:
+  case TYPE_REL32:
+  case TYPE_REL64:
+    if(immediate & 0x80000000)
+      immediate |= ~(0xffffffffull);
+    break;
+  case TYPE_MOFFS64:
+  default:
+    // operand is 64 bits wide.  Do nothing.
+    break;
+  }
+    
   mcInst.addOperand(MCOperand::CreateImm(immediate));
 }
 
@@ -370,8 +420,7 @@ static bool translateRM(MCInst &mcInst,
   case TYPE_XMM64:
   case TYPE_XMM128:
   case TYPE_DEBUGREG:
-  case TYPE_CR32:
-  case TYPE_CR64:
+  case TYPE_CONTROLREG:
     return translateRMRegister(mcInst, insn);
   case TYPE_M:
   case TYPE_M8:
@@ -447,8 +496,10 @@ static bool translateOperand(MCInst &mcInst,
   case ENCODING_IO:
   case ENCODING_Iv:
   case ENCODING_Ia:
-    translateImmediate(mcInst, 
-                       insn.immediates[insn.numImmediatesTranslated++]);
+    translateImmediate(mcInst,
+                       insn.immediates[insn.numImmediatesTranslated++],
+                       operand,
+                       insn);
     return false;
   case ENCODING_RB:
   case ENCODING_RW:
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
index 64f6b2d..6c3ff6b 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.c
@@ -1034,14 +1034,10 @@ static int readModRM(struct InternalInstruction* insn) {
       if (index > 7)                                      \
         *valid = 0;                                       \
       return prefix##_DR0 + index;                        \
-    case TYPE_CR32:                                       \
-      if (index > 7)                                      \
-        *valid = 0;                                       \
-      return prefix##_ECR0 + index;                       \
-    case TYPE_CR64:                                       \
+    case TYPE_CONTROLREG:                                 \
       if (index > 8)                                      \
         *valid = 0;                                       \
-      return prefix##_RCR0 + index;                       \
+      return prefix##_CR0 + index;                        \
     }                                                     \
   }
 
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.h b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.h
index 462cf68..28ba86b 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoder.h
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoder.h
@@ -225,26 +225,16 @@ extern "C" {
   ENTRY(DR6)        \
   ENTRY(DR7)
 
-#define REGS_CONTROL_32BIT  \
-  ENTRY(ECR0)               \
-  ENTRY(ECR1)               \
-  ENTRY(ECR2)               \
-  ENTRY(ECR3)               \
-  ENTRY(ECR4)               \
-  ENTRY(ECR5)               \
-  ENTRY(ECR6)               \
-  ENTRY(ECR7)
-
-#define REGS_CONTROL_64BIT  \
-  ENTRY(RCR0)               \
-  ENTRY(RCR1)               \
-  ENTRY(RCR2)               \
-  ENTRY(RCR3)               \
-  ENTRY(RCR4)               \
-  ENTRY(RCR5)               \
-  ENTRY(RCR6)               \
-  ENTRY(RCR7)               \
-  ENTRY(RCR8)
+#define REGS_CONTROL  \
+  ENTRY(CR0)          \
+  ENTRY(CR1)          \
+  ENTRY(CR2)          \
+  ENTRY(CR3)          \
+  ENTRY(CR4)          \
+  ENTRY(CR5)          \
+  ENTRY(CR6)          \
+  ENTRY(CR7)          \
+  ENTRY(CR8)
   
 #define ALL_EA_BASES  \
   EA_BASES_16BIT      \
@@ -264,8 +254,7 @@ extern "C" {
   REGS_XMM            \
   REGS_SEGMENT        \
   REGS_DEBUG          \
-  REGS_CONTROL_32BIT  \
-  REGS_CONTROL_64BIT  \
+  REGS_CONTROL        \
   ENTRY(RIP)
 
 /*
diff --git a/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h b/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
index 4a7cd57..0f33f52 100644
--- a/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
+++ b/lib/Target/X86/Disassembler/X86DisassemblerDecoderCommon.h
@@ -280,8 +280,7 @@ struct ContextDecision {
   ENUM_ENTRY(TYPE_XMM0,       "Implicit use of XMM0")                          \
   ENUM_ENTRY(TYPE_SEGMENTREG, "Segment register operand")                      \
   ENUM_ENTRY(TYPE_DEBUGREG,   "Debug register operand")                        \
-  ENUM_ENTRY(TYPE_CR32,       "4-byte control register operand")               \
-  ENUM_ENTRY(TYPE_CR64,       "8-byte")                                        \
+  ENUM_ENTRY(TYPE_CONTROLREG, "Control register operand")                      \
                                                                                \
   ENUM_ENTRY(TYPE_Mv,         "Memory operand of operand size")                \
   ENUM_ENTRY(TYPE_Rv,         "Register operand of operand size")              \