| 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // FixMain.cc -- |
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| 8 | // |
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| 9 | // Author : Thierry Delisle |
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| 10 | // Created On : Thr Jan 12 14:11:09 2017 |
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| 11 | // Last Modified By : |
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| 12 | // Last Modified On : |
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| 13 | // Update Count : 0 |
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| 14 | // |
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| 15 | |
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| 16 | |
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| 17 | #include "FixMain.h" |
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| 18 | |
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| 19 | #include <cassert> // for assert, assertf |
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| 20 | #include <fstream> // for operator<<, basic_ostream::operator<< |
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| 21 | #include <list> // for list |
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| 22 | #include <string> // for operator<< |
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| 23 | |
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| 24 | #include "Common/SemanticError.h" // for SemanticError |
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| 25 | #include "CodeGen/GenType.h" // for GenType |
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| 26 | #include "SynTree/Declaration.h" // for FunctionDecl, operator<< |
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| 27 | #include "SynTree/Type.h" // for FunctionType |
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| 28 | #include "SymTab/Mangler.h" |
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| 29 | |
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| 30 | namespace CodeGen { |
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| 31 | bool FixMain::replace_main = false; |
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| 32 | std::unique_ptr<FunctionDecl> FixMain::main_signature = nullptr; |
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| 33 | |
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| 34 | template<typename container> |
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| 35 | std::string genTypeAt(const container& p, size_t idx) { |
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| 36 | return genType((*std::next(p.begin(), idx))->get_type(), ""); |
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| 37 | } |
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| 38 | |
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| 39 | void FixMain::registerMain(FunctionDecl* functionDecl) |
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| 40 | { |
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| 41 | if(main_signature) { |
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| 42 | SemanticError(functionDecl, "Multiple definition of main routine\n"); |
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| 43 | } |
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| 44 | main_signature.reset( functionDecl->clone() ); |
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| 45 | } |
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| 46 | |
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| 47 | void FixMain::fix(std::ostream &os, const char* bootloader_filename) { |
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| 48 | if( main_signature ) { |
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| 49 | os << "static inline int invoke_main(int argc, char* argv[], char* envp[]) { (void)argc; (void)argv; (void)envp; return "; |
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| 50 | main_signature->mangleName = SymTab::Mangler::mangle(main_signature.get()); |
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| 51 | |
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| 52 | os << main_signature->get_scopedMangleName() << "("; |
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| 53 | const auto& params = main_signature->get_functionType()->get_parameters(); |
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| 54 | switch(params.size()) { |
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| 55 | case 3: os << "(" << genTypeAt(params, 0) << ")argc, (" << genTypeAt(params, 1) << ")argv, (" << genTypeAt(params, 2) << ")envp"; break; |
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| 56 | case 2: os << "(" << genTypeAt(params, 0) << ")argc, (" << genTypeAt(params, 1) << ")argv"; break; |
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| 57 | case 0: break; |
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| 58 | default : assert(false); |
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| 59 | } |
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| 60 | os << "); }\n"; |
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| 61 | |
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| 62 | std::ifstream bootloader(bootloader_filename, std::ios::in); |
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| 63 | assertf( bootloader.is_open(), "cannot open bootloader.c\n" ); |
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| 64 | os << bootloader.rdbuf(); |
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| 65 | } |
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| 66 | } |
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| 67 | }; |
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