From 2685a29a8d4ced7791bb671e28f9fe51c74eb3bb Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Tue, 20 Oct 2009 05:15:36 +0000
Subject: [PATCH] Wire up the ARM MCInst printer, for llvm-mc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84600 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Target/TargetRegistry.h        | 11 +++++++-
 lib/Target/ARM/AsmParser/ARMAsmParser.cpp   | 11 +++++++-
 lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp | 30 ++++++++++++++++-----
 3 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/include/llvm/Target/TargetRegistry.h b/include/llvm/Target/TargetRegistry.h
index 8042d236367..395526fa394 100644
--- a/include/llvm/Target/TargetRegistry.h
+++ b/include/llvm/Target/TargetRegistry.h
@@ -387,6 +387,15 @@ namespace llvm {
         T.MCDisassemblerCtorFn = Fn;
     }
 
+    /// RegisterMCInstPrinter - Register a MCInstPrinter implementation for the
+    /// given target.
+    /// 
+    /// Clients are responsible for ensuring that registration doesn't occur
+    /// while another thread is attempting to access the registry. Typically
+    /// this is done by initializing all targets at program startup.
+    ///
+    /// @param T - The target being registered.
+    /// @param Fn - A function to construct an MCInstPrinter for the target.
     static void RegisterMCInstPrinter(Target &T,
                                       Target::MCInstPrinterCtorTy Fn) {
       if (!T.MCInstPrinterCtorFn)
@@ -395,7 +404,7 @@ namespace llvm {
     
     /// RegisterCodeEmitter - Register a MCCodeEmitter implementation for the
     /// given target.
-    /// 
+    ///
     /// Clients are responsible for ensuring that registration doesn't occur
     /// while another thread is attempting to access the registry. Typically
     /// this is done by initializing all targets at program startup.
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 01487c29a69..403f96c69e5 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -534,8 +534,17 @@ bool ARMAsmParser::MatchInstruction(SmallVectorImpl<ARMOperand> &Operands,
       Mnemonic == "bl" ||
       Mnemonic == "push" ||
       Mnemonic == "blx" ||
-      Mnemonic == "pop")
+      Mnemonic == "pop") {
+    // Hard-coded to a valid instruction, till we have a real matcher.
+    Inst = MCInst();
+    Inst.setOpcode(ARM::MOVr);
+    Inst.addOperand(MCOperand::CreateReg(2));
+    Inst.addOperand(MCOperand::CreateReg(2));
+    Inst.addOperand(MCOperand::CreateImm(0));
+    Inst.addOperand(MCOperand::CreateImm(0));
+    Inst.addOperand(MCOperand::CreateReg(0));
     return false;
+  }
 
   return true;
 }
diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
index 66cc6f36745..6ed7e8e4cf4 100644
--- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
@@ -1301,13 +1301,6 @@ void ARMAsmPrinter::EmitEndOfAsmFile(Module &M) {
   }
 }
 
-// Force static initialization.
-extern "C" void LLVMInitializeARMAsmPrinter() {
-  RegisterAsmPrinter<ARMAsmPrinter> X(TheARMTarget);
-  RegisterAsmPrinter<ARMAsmPrinter> Y(TheThumbTarget);
-}
-
-
 //===----------------------------------------------------------------------===//
 
 void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
@@ -1457,3 +1450,26 @@ void ARMAsmPrinter::printInstructionThroughMCStreamer(const MachineInstr *MI) {
   
   printMCInst(&TmpInst);
 }
+
+//===----------------------------------------------------------------------===//
+// Target Registry Stuff
+//===----------------------------------------------------------------------===//
+
+static MCInstPrinter *createARMMCInstPrinter(const Target &T,
+                                             unsigned SyntaxVariant,
+                                             const MCAsmInfo &MAI,
+                                             raw_ostream &O) {
+  if (SyntaxVariant == 0)
+    return new ARMInstPrinter(O, MAI, false);
+  return 0;
+}
+
+// Force static initialization.
+extern "C" void LLVMInitializeARMAsmPrinter() {
+  RegisterAsmPrinter<ARMAsmPrinter> X(TheARMTarget);
+  RegisterAsmPrinter<ARMAsmPrinter> Y(TheThumbTarget);
+
+  TargetRegistry::RegisterMCInstPrinter(TheARMTarget, createARMMCInstPrinter);
+  TargetRegistry::RegisterMCInstPrinter(TheThumbTarget, createARMMCInstPrinter);
+}
+