1 /* 2 * Copyright (c) 2015 PLUMgrid, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "parser.h" 18 #include "type_check.h" 19 #include "codegen_llvm.h" 20 #include "loader.h" 21 22 using std::string; 23 using std::unique_ptr; 24 using std::vector; 25 26 namespace ebpf { 27 28 BLoader::BLoader(unsigned flags) : flags_(flags) { 29 (void)flags_; 30 } 31 32 BLoader::~BLoader() { 33 } 34 35 int BLoader::parse(llvm::Module *mod, const string &filename, const string &proto_filename, 36 TableStorage &ts, const string &id, const std::string &maps_ns) { 37 int rc; 38 39 proto_parser_ = make_unique<ebpf::cc::Parser>(proto_filename); 40 rc = proto_parser_->parse(); 41 if (rc) { 42 fprintf(stderr, "In file: %s\n", filename.c_str()); 43 return rc; 44 } 45 46 parser_ = make_unique<ebpf::cc::Parser>(filename); 47 rc = parser_->parse(); 48 if (rc) { 49 fprintf(stderr, "In file: %s\n", filename.c_str()); 50 return rc; 51 } 52 53 //ebpf::cc::Printer printer(stderr); 54 //printer.visit(parser_->root_node_); 55 56 ebpf::cc::TypeCheck type_check(parser_->scopes_.get(), proto_parser_->scopes_.get()); 57 auto ret = type_check.visit(parser_->root_node_); 58 if (ret.code() != 0 || ret.msg().size()) { 59 fprintf(stderr, "Type error @line=%d: %s\n", ret.code(), ret.msg().c_str()); 60 return -1; 61 } 62 63 codegen_ = ebpf::make_unique<ebpf::cc::CodegenLLVM>(mod, parser_->scopes_.get(), proto_parser_->scopes_.get()); 64 ret = codegen_->visit(parser_->root_node_, ts, id, maps_ns); 65 if (ret.code() != 0 || ret.msg().size()) { 66 fprintf(stderr, "Codegen error @line=%d: %s\n", ret.code(), ret.msg().c_str()); 67 return ret.code(); 68 } 69 70 return 0; 71 } 72 73 } // namespace ebpf 74
