69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
#include "ELF64.h"
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#include "ELF64_Sym.h"
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#include <ehs/EHS.h>
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#include <ehs/io/Console.h>
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#include <ehs/io/File.h>
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int main()
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{
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ehs::Initialize("Compiler", "Alpha", {1, 0, 0});
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ehs::Vector<ehs::Str_8> args = ehs::Console::GetArgs_8();
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if (args.Size() <= 1)
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{
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ehs::Console::Write_8(ehs::GetAppName_8() + " " + ehs::GetAppVersionId_8() + " v" + ehs::Str_8::FromNum(ehs::GetVersion().major) + "." +
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ehs::Str_8::FromNum(ehs::GetVersion().minor) + "." + ehs::Str_8::FromNum(ehs::GetVersion().patch));
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return 0;
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}
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ehs::File codeFile(args[1].RemoveAll("\""), ehs::Mode::READ, ehs::Disposition::OPEN);
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ehs::Serializer<ehs::UInt_64> code = codeFile.ReadSerializer_64(ehs::Endianness::LE, codeFile.Size());
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codeFile.Release();
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ELF64 executable(ELFH_END_LE, ELFH_ABI_SYSTEMV, ELFH_TYPE_EXEC, ELFH_MARCH_AMD_X86_64);
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ehs::UInt_64 lSgmtOffset = executable.GetLastSegmentOffset();
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ELF64_Section text(".text", 0x1000, SECH_TYPE_PROGBITS, SECH_FLAG_ALLOC | SECH_FLAG_EXEC, 0x401000, 16);
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text.SetData(code);
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executable.AddSection((ELF64_Section&&)text);
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ELF64_Section strTab(".strtab", 0, SECH_TYPE_STRTAB, 0, 0, 1);
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ehs::Serializer<ehs::UInt_64>& strTabData = strTab.GetData();
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constexpr ehs::Char_8 symName[] = "\0_start\0";
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strTabData.Resize(sizeof(symName));
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ehs::Util::Copy(&strTabData[0], symName, sizeof(symName));
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strTabData.SetOffset(sizeof(symName));
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executable.AddSection((ELF64_Section&&)strTab);
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ELF64_Section symTab(".symtab", 0, SECH_TYPE_SYMTAB, 0, 0, 8);
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symTab.SetLink(3);
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symTab.SetInfo(2);
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symTab.SetEntries(SYMH_SIZE);
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ehs::Serializer<ehs::UInt_64>& symTabData = symTab.GetData();
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ELF64_Sym nullSym;
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nullSym.Serialize(symTabData);
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ELF64_Sym _start(1, SYM_INFO(SYM_BIND_GLOBAL, SYM_TYPE_NOTYPE), SYM_VIS_DEFAULT, 2, 0x401000, 0);
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_start.Serialize(symTabData);
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executable.AddSection((ELF64_Section&&)symTab);
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executable.AddProgram({PRGH_TYPE_LOAD, PRGH_FLAG_READ, 0, 0x400000, lSgmtOffset, 0, 0x1000});
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executable.AddProgram({PRGH_TYPE_LOAD, PRGH_FLAG_EXEC | PRGH_FLAG_READ, 0x1000, 0x401000, code.Size(), 0, 0x1000});
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executable.SetEntryPoint(1);
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ehs::File file(args[2].RemoveAll("\""), ehs::Mode::WRITE, ehs::Disposition::CREATE_PERSISTENT);
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file.WriteSerializer_64(executable.Serialize());
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ehs::Uninitialize();
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return 0;
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}
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