| 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 | SemanticError(functionDecl, "Multiple definition of main routine\n");
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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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