142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao/* 242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * Copyright 2012, The Android Open Source Project 342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * 442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * Licensed under the Apache License, Version 2.0 (the "License"); 542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * you may not use this file except in compliance with the License. 642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * You may obtain a copy of the License at 742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * 842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * http://www.apache.org/licenses/LICENSE-2.0 942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * 1042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * Unless required by applicable law or agreed to in writing, software 1142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * distributed under the License is distributed on an "AS IS" BASIS, 1242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * See the License for the specific language governing permissions and 1442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao * limitations under the License. 1542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao */ 1642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 1742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/ADT/Triple.h> 1842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/DerivedTypes.h> 1942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/Function.h> 2042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/Instructions.h> 2142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/IRBuilder.h> 2242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/Module.h> 2342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/Pass.h> 2442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/Type.h> 2542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include <llvm/Target/TargetData.h> 2642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 2742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include "bcc/AndroidBitcode/ABCExpandVAArgPass.h" 2842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 2942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao#include "Mips/MipsABCCompilerDriver.h" 3042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 3142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liaonamespace { 3242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 3342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liaoclass MipsABCExpandVAArg : public bcc::ABCExpandVAArgPass { 3442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liaopublic: 3542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao virtual const char *getPassName() const { 3642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao return "Mips LLVM va_arg Instruction Expansion Pass"; 3742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao } 3842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 3942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liaoprivate: 4042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao // Derivative work from external/clang/lib/CodeGen/TargetInfo.cpp. 4142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao virtual llvm::Value *expandVAArg(llvm::Instruction *pInst) { 4242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Type *pty = pInst->getType(); 4342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Type *ty = pty->getContainedType(0); 4442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *va_list_addr = pInst->getOperand(0); 4542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::IRBuilder<> builder(pInst); 4642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao const llvm::TargetData *td = getAnalysisIfAvailable<llvm::TargetData>(); 4742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 4842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Type *bp = llvm::Type::getInt8PtrTy(*mContext); 4942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Type *bpp = bp->getPointerTo(0); 5042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *va_list_addr_bpp = builder.CreateBitCast(va_list_addr, 5142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao bpp, "ap"); 5242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *addr = builder.CreateLoad(va_list_addr_bpp, "ap.cur"); 5342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao int64_t type_align = td->getABITypeAlignment(ty); 5442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *addr_typed; 5542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::IntegerType *int_ty = llvm::Type::getInt32Ty(*mContext); 5642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 5742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao if (type_align > 4) { 5842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *addr_as_int = builder.CreatePtrToInt(addr, int_ty); 5942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *inc = llvm::ConstantInt::get(int_ty, type_align - 1); 6042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *mask = llvm::ConstantInt::get(int_ty, -type_align); 6142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *add_v = builder.CreateAdd(addr_as_int, inc); 6242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *and_v = builder.CreateAnd(add_v, mask); 6342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao addr_typed = builder.CreateIntToPtr(and_v, pty); 6442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao } 6542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao else { 6642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao addr_typed = builder.CreateBitCast(addr, pty); 6742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao } 6842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 6942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *aligned_addr = builder.CreateBitCast(addr_typed, bp); 7042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao type_align = std::max((unsigned)type_align, (unsigned) 4); 7142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao uint64_t offset = 7242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::RoundUpToAlignment(td->getTypeSizeInBits(ty) / 8, type_align); 7342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao llvm::Value *next_addr = 7442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao builder.CreateGEP(aligned_addr, llvm::ConstantInt::get(int_ty, offset), 7542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao "ap.next"); 7642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao builder.CreateStore(next_addr, va_list_addr_bpp); 7742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 7842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao return addr_typed; 7942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao } 8042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 8142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao}; 8242b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 8342b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao} // end anonymous namespace 8442b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 8542b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liaonamespace bcc { 8642b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 8742b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei LiaoABCExpandVAArgPass *MipsABCCompilerDriver::createExpandVAArgPass() const { 8842b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao return new MipsABCExpandVAArg(); 8942b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao} 9042b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao 9142b88c3b3cdadf6fcd367ee2bc620c0c94bbfe1bShih-wei Liao} // end namespace bcc 92