slang_rs_export_func.cpp revision 9e5b503349719144f63ccb7c62ee9c291a7d83b8
1c383a500aa59423264811be3874461bf8adbfea0Zonr Chang/* 2c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Copyright 2010, The Android Open Source Project 3c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 4c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Licensed under the Apache License, Version 2.0 (the "License"); 5c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * you may not use this file except in compliance with the License. 6c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * You may obtain a copy of the License at 7c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 8c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * http://www.apache.org/licenses/LICENSE-2.0 9c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 10c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Unless required by applicable law or agreed to in writing, software 11c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * distributed under the License is distributed on an "AS IS" BASIS, 12c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * See the License for the specific language governing permissions and 14c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * limitations under the License. 15c383a500aa59423264811be3874461bf8adbfea0Zonr Chang */ 16c383a500aa59423264811be3874461bf8adbfea0Zonr Chang 176315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr#include "slang_rs_export_func.h" 18462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 190da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang#include "llvm/DerivedTypes.h" 209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "llvm/Target/TargetData.h" 210a3f20ec28ed6f5ae1ed5d61f6b6e3e577f7f5d1Shih-wei Liao 220da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang#include "clang/AST/ASTContext.h" 239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/Decl.h" 24462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 256315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr#include "slang_rs_context.h" 266315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr 279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaousing namespace slang; 28462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 299ef2f785e0cc490af678dfd685995dec787321ffShih-wei LiaoRSExportFunc *RSExportFunc::Create(RSContext *Context, 309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::FunctionDecl *FD) { 319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::StringRef Name = FD->getName(); 329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao RSExportFunc *F; 33462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao assert(!Name.empty() && "Function must have a name"); 35462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao F = new RSExportFunc(Context, Name); 37462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 380da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang // Initialize mParamPacketType 390da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (FD->getNumParams() <= 0) { 400da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang F->mParamPacketType = NULL; 410da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang } else { 429e5b503349719144f63ccb7c62ee9c291a7d83b8Stephen Hines clang::ASTContext &Ctx = Context->getASTContext(); 430da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 440da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang std::string Id(DUMMY_RS_TYPE_NAME_PREFIX"helper_func_param:"); 450da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang Id.append(F->getName()).append(DUMMY_RS_TYPE_NAME_POSTFIX); 460da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 470da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang clang::RecordDecl *RD = 489e5b503349719144f63ccb7c62ee9c291a7d83b8Stephen Hines clang::RecordDecl::Create(Ctx, clang::TTK_Struct, 499e5b503349719144f63ccb7c62ee9c291a7d83b8Stephen Hines Ctx.getTranslationUnitDecl(), 500da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang clang::SourceLocation(), 519e5b503349719144f63ccb7c62ee9c291a7d83b8Stephen Hines &Ctx.Idents.get(Id)); 520da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 530da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang for (unsigned i = 0; i < FD->getNumParams(); i++) { 540da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang const clang::ParmVarDecl *PVD = FD->getParamDecl(i); 550da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang llvm::StringRef ParamName = PVD->getName(); 560da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 570da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (PVD->hasDefaultArg()) 580da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang fprintf(stderr, "Note: parameter '%s' in function '%s' has default " 590da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang "value which is not supported\n", 600da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang ParamName.str().c_str(), 610da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang F->getName().c_str()); 620da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 630da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang clang::FieldDecl *FD = 649e5b503349719144f63ccb7c62ee9c291a7d83b8Stephen Hines clang::FieldDecl::Create(Ctx, 650da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang RD, 660da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang clang::SourceLocation(), 670da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang PVD->getIdentifier(), 680da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang PVD->getOriginalType(), 690da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang NULL, 700da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang /* BitWidth = */NULL, 710da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang /* Mutable = */false); 720da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang RD->addDecl(FD); 730da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang } 740da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 750da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang RD->completeDefinition(); 760da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 779e5b503349719144f63ccb7c62ee9c291a7d83b8Stephen Hines clang::QualType T = Ctx.getTagDeclType(RD); 780da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang assert(!T.isNull()); 790da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 800da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang RSExportType *ET = 810da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang RSExportType::Create(Context, T.getTypePtr()); 820da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 830da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (ET == NULL) { 840da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang fprintf(stderr, "Failed to export the function %s. There's at least one " 850da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang "parameter whose type is not supported by the " 860da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang "reflection", F->getName().c_str()); 879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete F; 889ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return NULL; 89462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 900da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 910da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang assert((ET->getClass() == RSExportType::ExportClassRecord) && 920da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang "Parameter packet must be a record"); 930da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 940da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang F->mParamPacketType = static_cast<RSExportRecordType *>(ET); 959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 96462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 979ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return F; 98462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 99462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1000da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Changbool 1010da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr ChangRSExportFunc::checkParameterPacketType(const llvm::StructType *ParamTy) const { 1020da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (ParamTy == NULL) 1030da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang return !hasParam(); 1040da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang else if (!hasParam()) 1050da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang return false; 106462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1070da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang assert(mParamPacketType != NULL); 1089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1090da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang const RSExportRecordType *ERT = mParamPacketType; 1100da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang // must have same number of elements 1110da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (ERT->getFields().size() != ParamTy->getNumElements()) 1120da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang return false; 1139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1140da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang const llvm::StructLayout *ParamTySL = 115641558f02fe6ce0ee3ae5076eb366c25e2ad5903Zonr Chang getRSContext()->getTargetData()->getStructLayout(ParamTy); 1169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1170da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang unsigned Index = 0; 1180da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang for (RSExportRecordType::const_field_iterator FI = ERT->fields_begin(), 1190da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang FE = ERT->fields_end(); FI != FE; FI++, Index++) { 1200da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang const RSExportRecordType::Field *F = *FI; 1219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1220da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang const llvm::Type *T1 = F->getType()->getLLVMType(); 1230da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang const llvm::Type *T2 = ParamTy->getTypeAtIndex(Index); 1240da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 1250da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang // Fast check 1260da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (T1 == T2) 1270da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang continue; 128462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1290da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang // Check offset 1300da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang size_t T1Offset = F->getOffsetInParent(); 1310da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang size_t T2Offset = ParamTySL->getElementOffset(Index); 132462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1330da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (T1Offset != T2Offset) 1340da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang return false; 1350da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 1360da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang // Check size 1370da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang size_t T1Size = RSExportType::GetTypeAllocSize(F->getType()); 138641558f02fe6ce0ee3ae5076eb366c25e2ad5903Zonr Chang size_t T2Size = getRSContext()->getTargetData()->getTypeAllocSize(T2); 1390da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang 1400da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang if (T1Size != T2Size) 1410da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang return false; 1420da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang } 1431f0d88fbff28e4e2dd563d93c8fe0047381c09ccShih-wei Liao 1440da0a7dc51c25943fe31d0bfccbdfee326a3199cZonr Chang return true; 145462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 146