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Restructured and rewritten entire codebase

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This commit is contained in:
Alex
2023-10-09 01:16:24 +03:00
parent 446a571018
commit 889e1522a3
484 changed files with 15683 additions and 14032 deletions
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66
exec/elf/parse/elf_get_dynamic_tag.cpp Normal file
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/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#include <exec.hpp>
#include "../../../kernel.h"
namespace Execute
{
std::vector<Elf64_Dyn> ELFGetDynamicTag_x86_64(int fd,
DynamicArrayTags Tag)
{
#if defined(a64) || defined(aa64)
off_t OldOffset = lseek(fd, 0, SEEK_CUR);
std::vector<Elf64_Dyn> Ret;
Elf64_Ehdr ELFHeader;
lseek(fd, 0, SEEK_SET);
fread(fd, (uint8_t *)&ELFHeader, sizeof(Elf64_Ehdr));
std::vector<Elf64_Phdr> DYNAMICPhdrs = ELFGetSymbolType_x86_64(fd, PT_DYNAMIC);
if (DYNAMICPhdrs.size() < 1)
{
error("No dynamic phdrs found.");
return Ret;
}
foreach (auto Phdr in DYNAMICPhdrs)
{
Elf64_Dyn Dynamic;
for (size_t i = 0; i < Phdr.p_filesz / sizeof(Elf64_Dyn); i++)
{
lseek(fd, Phdr.p_offset + (i * sizeof(Elf64_Dyn)), SEEK_SET);
fread(fd, (uint8_t *)&Dynamic, sizeof(Elf64_Dyn));
if (Dynamic.d_tag != Tag)
continue;
debug("Found dynamic tag %d at %#lx [d_val: %#lx]",
Tag, &Dynamic, Dynamic.d_un.d_val);
Ret.push_back(Dynamic);
}
}
lseek(fd, OldOffset, SEEK_SET);
return Ret;
#elif defined(a32)
return {};
#endif
}
}

58
exec/elf/parse/elf_get_sections.cpp Normal file
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/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#include <exec.hpp>
#include "../../../kernel.h"
namespace Execute
{
std::vector<Elf64_Shdr> ELFGetSections_x86_64(int fd,
const char *SectionName)
{
#if defined(a64) || defined(aa64)
off_t OldOffset = lseek(fd, 0, SEEK_CUR);
std::vector<Elf64_Shdr> Ret;
Elf64_Ehdr ELFHeader;
lseek(fd, 0, SEEK_SET);
fread(fd, (uint8_t *)&ELFHeader, sizeof(Elf64_Ehdr));
Elf64_Shdr *SectionHeaders = new Elf64_Shdr[ELFHeader.e_shnum];
lseek(fd, ELFHeader.e_shoff, SEEK_SET);
fread(fd, (uint8_t *)SectionHeaders, sizeof(Elf64_Shdr) * ELFHeader.e_shnum);
char *SectionNames = new char[SectionHeaders[ELFHeader.e_shstrndx].sh_size];
lseek(fd, SectionHeaders[ELFHeader.e_shstrndx].sh_offset, SEEK_SET);
fread(fd, (uint8_t *)SectionNames, SectionHeaders[ELFHeader.e_shstrndx].sh_size);
for (Elf64_Half i = 0; i < ELFHeader.e_shnum; ++i)
{
const char *Name = SectionNames + SectionHeaders[i].sh_name;
if (strcmp(Name, SectionName) == 0)
Ret.push_back(SectionHeaders[i]);
}
lseek(fd, OldOffset, SEEK_SET);
delete[] SectionHeaders;
delete[] SectionNames;
return Ret;
#elif defined(a32)
return {};
#endif
}
}

54
exec/elf/parse/elf_get_symbol_type.cpp Normal file
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/*
This file is part of Fennix Kernel.
Fennix Kernel is free software: you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.
Fennix Kernel is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/
#include <exec.hpp>
#include "../../../kernel.h"
namespace Execute
{
std::vector<Elf64_Phdr> ELFGetSymbolType_x86_64(int fd,
SegmentTypes Tag)
{
#if defined(a64) || defined(aa64)
off_t OldOffset = lseek(fd, 0, SEEK_CUR);
std::vector<Elf64_Phdr> Ret;
Elf64_Ehdr ELFHeader;
lseek(fd, 0, SEEK_SET);
fread(fd, (uint8_t *)&ELFHeader, sizeof(Elf64_Ehdr));
Elf64_Phdr ProgramHeaders;
lseek(fd, ELFHeader.e_phoff, SEEK_SET);
fread(fd, (uint8_t *)&ProgramHeaders, sizeof(Elf64_Phdr));
for (Elf64_Half i = 0; i < ELFHeader.e_phnum; i++)
{
if (ProgramHeaders.p_type == Tag)
Ret.push_back(ProgramHeaders);
lseek(fd, sizeof(Elf64_Phdr), SEEK_CUR);
fread(fd, (uint8_t *)&ProgramHeaders, sizeof(Elf64_Phdr));
}
lseek(fd, OldOffset, SEEK_SET);
return Ret;
#elif defined(a32)
return {};
#endif
}
}