X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FSparcV9%2FEmitBytecodeToAssembly.cpp;h=eeb288a33dcb691a944fe5bf623d0a95135e1a45;hb=541f91b17c33712e2c92f02916082832e6d73c46;hp=4a99cb3c4ca4cb87c32a2854c86e42bd8dabf2f3;hpb=0009c2e8b38478eef745c777eafcca511cabc246;p=oota-llvm.git

diff --git a/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp b/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp
index 4a99cb3c4ca..eeb288a33dc 100644
--- a/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp
+++ b/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp
@@ -1,4 +1,11 @@
-//===-- EmitBytecodeToAssembly.cpp - Emit bytecode to Sparc .s File --------==//
+//===-- EmitBytecodeToAssembly.cpp - Emit bytecode to SparcV9 .s File ------==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
 //
 // This file implements the pass that writes LLVM bytecode as data to a sparc
 // assembly file.  The bytecode gets assembled into a special bytecode section
@@ -6,12 +13,11 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "SparcInternals.h"
+#include "SparcV9Internals.h"
 #include "llvm/Pass.h"
 #include "llvm/Bytecode/Writer.h"
 #include <iostream>
-
-using std::ostream;
+using namespace llvm;
 
 namespace {
 
@@ -25,7 +31,7 @@ namespace {
     typedef int            int_type;
     typedef std::streampos pos_type;
     typedef std::streamoff off_type;
-    
+
     sparcasmbuf(std::ostream &On) : BaseStr(On) {}
 
     virtual int_type overflow(int_type C) {
@@ -55,43 +61,55 @@ namespace {
     }
   };
 
-  // SparcBytecodeWriter - Write bytecode out to a stream that is sparc'ified
-  class SparcBytecodeWriter : public Pass {
+  static void writePrologue (std::ostream &Out, const std::string &comment,
+                             const std::string &symName) {
+    // Prologue:
+    // Output a comment describing the object.
+    Out << "!" << comment << "\n";
+    // Switch the current section to .rodata in the assembly output:
+    Out << "\t.section \".rodata\"\n\t.align 8\n";
+    // Output a global symbol naming the object:
+    Out << "\t.global " << symName << "\n";
+    Out << "\t.type " << symName << ",#object\n";
+    Out << symName << ":\n";
+  }
+
+  static void writeEpilogue (std::ostream &Out, const std::string &symName) {
+    // Epilogue:
+    // Output a local symbol marking the end of the object:
+    Out << ".end_" << symName << ":\n";
+    // Output size directive giving the size of the object:
+    Out << "\t.size " << symName << ", .end_" << symName << "-" << symName
+        << "\n";
+  }
+
+  // SparcV9BytecodeWriter - Write bytecode out to a stream that is sparc'ified
+  class SparcV9BytecodeWriter : public ModulePass {
     std::ostream &Out;
   public:
-    SparcBytecodeWriter(std::ostream &out) : Out(out) {}
-
-    const char *getPassName() const { return "Emit Bytecode to Sparc Assembly";}
-    
-    virtual bool run(Module &M) {
-      // Write bytecode out to the sparc assembly stream
-
-      
-      Out << "\n\n!LLVM BYTECODE OUTPUT\n\t.section \".rodata\"\n\t.align 8\n";
-      Out << "\t.global LLVMBytecode\n\t.type LLVMBytecode,#object\n";
-      Out << "LLVMBytecode:\n";
-      //changed --anand, to get the size of bytecode
+    SparcV9BytecodeWriter(std::ostream &out) : Out(out) {}
+
+    const char *getPassName() const { return "Emit Bytecode to SparcV9 Assembly";}
+
+    virtual bool runOnModule(Module &M) {
+      // Write an object containing the bytecode to the SPARC assembly stream
+      writePrologue (Out, "LLVM BYTECODE OUTPUT", "LLVMBytecode");
       osparcasmstream OS(Out);
       WriteBytecodeToFile(&M, OS);
+      writeEpilogue (Out, "LLVMBytecode");
+
+      // Write an object containing its length as an integer to the
+      // SPARC assembly stream
+      writePrologue (Out, "LLVM BYTECODE LENGTH", "llvm_length");
+      Out <<"\t.word\t.end_LLVMBytecode-LLVMBytecode\n";
+      writeEpilogue (Out, "llvm_length");
 
-       
-      Out << ".end_LLVMBytecode:\n";
-      Out << "\t.size LLVMBytecode, .end_LLVMBytecode-LLVMBytecode\n\n";
-
-      
-      Out <<"\n\n!LLVM BYTECODE Length\n";
-      Out <<"\t.section \".data\",#alloc,#write\n";
-      Out <<"\t.global llvm_length\n";
-      Out <<"\t.align 4\n";
-      Out <<"\t.type llvm_length,#object\n";
-      Out <<"\t.size llvm_length,4\n";
-      Out <<"llvm_length:\n";
-      Out <<"\t.word\t.end_LLVMBytecode-LLVMBytecode\n"; 
       return false;
     }
   };
 }  // end anonymous namespace
 
-Pass *UltraSparc::getEmitBytecodeToAsmPass(std::ostream &Out) {
-  return new SparcBytecodeWriter(Out);
+ModulePass *llvm::createBytecodeAsmPrinterPass(std::ostream &Out) {
+  return new SparcV9BytecodeWriter(Out);
 }
+