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-rw-r--r--lib/Target/SparcV9/EmitBytecodeToAssembly.cpp115
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diff --git a/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp b/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp
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--- a/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp
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-//===-- 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
-// of the executable for use at runtime later.
-//
-//===----------------------------------------------------------------------===//
-
-#include "SparcV9Internals.h"
-#include "llvm/Pass.h"
-#include "llvm/Bytecode/Writer.h"
-#include <iostream>
-using namespace llvm;
-
-namespace {
-
- // sparcasmbuf - stream buf for encoding output bytes as .byte directives for
- // the sparc assembler.
- //
- class sparcasmbuf : public std::streambuf {
- std::ostream &BaseStr;
- public:
- typedef char char_type;
- 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) {
- if (C != EOF)
- BaseStr << "\t.byte " << C << "\n"; // Output C;
- return C;
- }
- };
-
-
- // osparcasmstream - Define an ostream implementation that uses a sparcasmbuf
- // as the underlying streambuf to write the data to. This streambuf formats
- // the output as .byte directives for sparc output.
- //
- class osparcasmstream : public std::ostream {
- sparcasmbuf sb;
- public:
- typedef char char_type;
- typedef int int_type;
- typedef std::streampos pos_type;
- typedef std::streamoff off_type;
-
- explicit osparcasmstream(std::ostream &On) : std::ostream(&sb), sb(On) { }
-
- sparcasmbuf *rdbuf() const {
- return const_cast<sparcasmbuf*>(&sb);
- }
- };
-
- 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:
- 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");
-
- return false;
- }
- };
-} // end anonymous namespace
-
-ModulePass *llvm::createBytecodeAsmPrinterPass(std::ostream &Out) {
- return new SparcV9BytecodeWriter(Out);
-}
-