diff --git a/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp b/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp new file mode 100644 index 00000000000..7cbf08557fb --- /dev/null +++ b/lib/Target/SparcV9/EmitBytecodeToAssembly.cpp @@ -0,0 +1,77 @@ +//===-- EmitBytecodeToAssembly.cpp - Emit bytecode to Sparc .s File --------==// +// +// 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 "SparcInternals.h" +#include "llvm/Bytecode/Writer.h" + +namespace { + + // sparcasmbuf - stream buf for encoding output bytes as .byte directives for + // the sparc assembler. + // + class sparcasmbuf : public streambuf { + std::ostream &BaseStr; + public: + typedef char char_type; + typedef int int_type; + typedef streampos pos_type; + typedef 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 ostream { + sparcasmbuf sb; + public: + typedef char char_type; + typedef int int_type; + typedef streampos pos_type; + typedef streamoff off_type; + + explicit osparcasmstream(ostream &On) : ostream(&sb), sb(On) { } + + sparcasmbuf *rdbuf() const { + return const_cast(&sb); + } + }; + + // SparcBytecodeWriter - Write bytecode out to a stream that is sparc'ified + class SparcBytecodeWriter : public Pass { + std::ostream &Out; + public: + SparcBytecodeWriter(std::ostream &out) : Out(out) {} + + 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"; + osparcasmstream OS(Out); + WriteBytecodeToFile(M, OS); + + Out << ".end_LLVMBytecode:\n"; + Out << "\t.size LLVMBytecode, .end_LLVMBytecode-LLVMBytecode\n\n"; + return false; + } + }; +} // end anonymous namespace + +Pass *UltraSparc::getEmitBytecodeToAsmPass(std::ostream &Out) { + return new SparcBytecodeWriter(Out); +} diff --git a/lib/Target/SparcV9/SparcV9Internals.h b/lib/Target/SparcV9/SparcV9Internals.h index ad3f478b334..73f02c345bd 100644 --- a/lib/Target/SparcV9/SparcV9Internals.h +++ b/lib/Target/SparcV9/SparcV9Internals.h @@ -607,6 +607,7 @@ public: private: Pass *getMethodAsmPrinterPass(PassManager &PM, std::ostream &Out); Pass *getModuleAsmPrinterPass(PassManager &PM, std::ostream &Out); + Pass *getEmitBytecodeToAsmPass(std::ostream &Out); }; #endif diff --git a/lib/Target/SparcV9/SparcV9TargetMachine.cpp b/lib/Target/SparcV9/SparcV9TargetMachine.cpp index 422dda02bf4..14be9923154 100644 --- a/lib/Target/SparcV9/SparcV9TargetMachine.cpp +++ b/lib/Target/SparcV9/SparcV9TargetMachine.cpp @@ -269,4 +269,7 @@ void UltraSparc::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out) { // Emit Module level assembly after all of the methods have been processed. PM.add(getModuleAsmPrinterPass(PM, Out)); + + // Emit bytecode to the sparc assembly file into its special section next + PM.add(getEmitBytecodeToAsmPass(Out)); }