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 | |
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29 | namespace CodeGen { |
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30 | bool FixMain::replace_main = false; |
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31 | std::unique_ptr<FunctionDecl> FixMain::main_signature = nullptr; |
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32 | |
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33 | template<typename container> |
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34 | std::string genTypeAt(const container& p, size_t idx) { |
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35 | return genType((*std::next(p.begin(), idx))->get_type(), ""); |
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36 | } |
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37 | |
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38 | void FixMain::registerMain(FunctionDecl* functionDecl) |
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39 | { |
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40 | if(main_signature) { |
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41 | throw SemanticError("Multiple definition of main routine\n", functionDecl); |
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42 | } |
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43 | main_signature.reset( functionDecl->clone() ); |
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44 | } |
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45 | |
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46 | void FixMain::fix(std::ostream &os, const char* bootloader_filename) { |
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47 | if( main_signature ) { |
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48 | os << "static inline int invoke_main(int argc, char* argv[], char* envp[]) { (void)argc; (void)argv; (void)envp; return "; |
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49 | |
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50 | os << main_signature->get_scopedMangleName() << "("; |
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51 | const auto& params = main_signature->get_functionType()->get_parameters(); |
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52 | switch(params.size()) { |
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53 | case 3: os << "(" << genTypeAt(params, 0) << ")argc, (" << genTypeAt(params, 1) << ")argv, (" << genTypeAt(params, 2) << ")envp"; break; |
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54 | case 2: os << "(" << genTypeAt(params, 0) << ")argc, (" << genTypeAt(params, 1) << ")argv"; break; |
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55 | case 0: break; |
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56 | default : assert(false); |
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57 | } |
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58 | os << "); }\n"; |
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59 | |
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60 | std::ifstream bootloader(bootloader_filename, std::ios::in); |
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61 | assertf( bootloader.is_open(), "cannot open bootloader.c\n" ); |
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62 | os << bootloader.rdbuf(); |
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63 | } |
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64 | } |
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65 | }; |
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