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Merge remote-tracking branch 'Kernel/mb2_32_64_test' into Kernel-mb2_32_64_test

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EnderIce2
2024-11-20 05:15:06 +02:00
parent 47cf2c24d1
commit b348932172
353 changed files with 77068 additions and 0 deletions
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Kernel/Execute/Elf/SharedObjects.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 <memory.hpp>
#include <lock.hpp>
#include <msexec.h>
#include <cwalk.h>
#include <elf.h>
#include <abi.h>
#ifdef DEBUG
#include <dumper.hpp>
#endif
#include "../../kernel.h"
#include "../../Fex.hpp"
using namespace Tasking;
NewLock(ExecuteServiceLock);
namespace Execute
{
Memory::MemMgr *mem = nullptr;
std::vector<SharedLibraries> Libs;
void StartExecuteService()
{
mem = new Memory::MemMgr;
while (true)
{
{
SmartLock(ExecuteServiceLock);
foreach (auto &Lib in Libs)
{
if (Lib.RefCount > 0)
{
Lib.Timeout = TimeManager->CalculateTarget(10, Time::Units::Minutes);
debug("Reset timeout for %s", Lib.Identifier);
continue;
}
if (Lib.Timeout < TimeManager->GetCounter())
{
// TODO: Remove
fixme("Removed library %s because of timeout", Lib.Identifier);
}
else
{
debug("Timeout for %s is %ld", Lib.Identifier, Lib.Timeout);
}
}
debug("Waiting 10 seconds...");
}
TaskManager->Sleep(10000);
}
}
bool AddLibrary(char *Identifier, void *ElfImage, size_t Length, const Memory::Virtual &pV)
{
SmartLock(ExecuteServiceLock);
SharedLibraries sl;
foreach (auto lib in Libs)
{
if (strcmp(lib.Identifier, Identifier) == 0)
{
debug("Library %s already loaded", Identifier);
lib.RefCount++;
return true;
}
}
strcpy(sl.Identifier, Identifier);
sl.Timeout = TimeManager->CalculateTarget(10, Time::Units::Minutes);
sl.RefCount = 0;
void *LibFile = mem->RequestPages(TO_PAGES(Length + 1), true);
debug("LibFile: %#lx", LibFile);
memcpy(LibFile, (void *)ElfImage, Length);
Memory::Virtual().Map(LibFile, LibFile, Length, Memory::RW | Memory::US | Memory::G);
Memory::Virtual ncpV = pV;
sl.MemoryImage = r_cst(uint64_t, ELFCreateMemoryImage(mem, ncpV, LibFile, Length).Phyiscal);
debug("MemoryImage: %#lx", sl.MemoryImage);
{
uintptr_t BaseAddress = UINTPTR_MAX;
Elf64_Phdr ItrProgramHeader;
for (Elf64_Half i = 0; i < ((Elf64_Ehdr *)LibFile)->e_phnum; i++)
{
memcpy(&ItrProgramHeader, (uint8_t *)LibFile + ((Elf64_Ehdr *)LibFile)->e_phoff + ((Elf64_Ehdr *)LibFile)->e_phentsize * i, sizeof(Elf64_Phdr));
BaseAddress = MIN(BaseAddress, ItrProgramHeader.p_vaddr);
}
for (Elf64_Half i = 0; i < ((Elf64_Ehdr *)LibFile)->e_phnum; i++)
{
memcpy(&ItrProgramHeader, (uint8_t *)LibFile + ((Elf64_Ehdr *)LibFile)->e_phoff + ((Elf64_Ehdr *)LibFile)->e_phentsize * i, sizeof(Elf64_Phdr));
if (ItrProgramHeader.p_type != PT_LOAD)
continue;
debug("PT_LOAD - Offset: %#lx, VirtAddr: %#lx, FileSiz: %ld, MemSiz: %ld, Align: %#lx",
ItrProgramHeader.p_offset, ItrProgramHeader.p_vaddr,
ItrProgramHeader.p_filesz, ItrProgramHeader.p_memsz, ItrProgramHeader.p_align);
uintptr_t MAddr = (ItrProgramHeader.p_vaddr - BaseAddress) + (uintptr_t)sl.MemoryImage;
fixme("Address: %#lx %s%s%s", MAddr,
(ItrProgramHeader.p_flags & PF_R) ? "R" : "",
(ItrProgramHeader.p_flags & PF_W) ? "W" : "",
(ItrProgramHeader.p_flags & PF_X) ? "X" : "");
memcpy((void *)MAddr, (uint8_t *)LibFile + ItrProgramHeader.p_offset, ItrProgramHeader.p_filesz);
debug("memcpy: %#lx => %#lx (%ld bytes)", (uint8_t *)LibFile + ItrProgramHeader.p_offset, (uintptr_t)MAddr, ItrProgramHeader.p_filesz);
break;
}
struct Elf64_Dyn *JmpRel = ELFGetDynamicTag((void *)LibFile, DT_JMPREL);
struct Elf64_Dyn *SymTab = ELFGetDynamicTag((void *)LibFile, DT_SYMTAB);
struct Elf64_Dyn *StrTab = ELFGetDynamicTag((void *)LibFile, DT_STRTAB);
if (!JmpRel)
{
debug("No DT_JMPREL");
}
if (!SymTab)
{
debug("No DT_SYMTAB");
}
if (!StrTab)
{
debug("No DT_STRTAB");
}
if (JmpRel && SymTab && StrTab)
{
debug("JmpRel: %#lx, SymTab: %#lx, StrTab: %#lx", JmpRel->d_un.d_ptr, SymTab->d_un.d_ptr, StrTab->d_un.d_ptr);
Elf64_Rela *_JmpRel = (Elf64_Rela *)(sl.MemoryImage + (JmpRel->d_un.d_ptr - BaseAddress));
Elf64_Sym *_SymTab = (Elf64_Sym *)(sl.MemoryImage + (SymTab->d_un.d_ptr - BaseAddress));
char *_DynStr = (char *)(sl.MemoryImage + (StrTab->d_un.d_ptr - BaseAddress));
Elf64_Shdr *gotSection = nullptr;
for (Elf64_Half i = 0; i < ((Elf64_Ehdr *)LibFile)->e_shnum; i++)
{
Elf64_Shdr *shdr = (Elf64_Shdr *)((uint8_t *)LibFile + ((Elf64_Ehdr *)LibFile)->e_shoff + i * sizeof(Elf64_Shdr));
if (shdr->sh_type == SHT_PROGBITS && (shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_ALLOC))
{
gotSection = shdr;
break;
}
}
debug("LIB_DBG");
if (gotSection)
{
Elf64_Xword numEntries = gotSection->sh_size / sizeof(Elf64_Addr);
for (Elf64_Xword i = 0; i < numEntries - 3; i++)
{
Elf64_Rela *Rel = _JmpRel + i;
Elf64_Addr *GOTEntry = (Elf64_Addr *)(Rel->r_offset + sl.MemoryImage);
Elf64_Xword RelType = ELF64_R_TYPE(Rel->r_info);
debug("r_offset: %#lx RelType: %d", Rel->r_offset, RelType);
switch (RelType)
{
case R_X86_64_NONE:
break;
case R_X86_64_JUMP_SLOT:
{
Elf64_Xword SymIndex = ELF64_R_SYM(Rel->r_info);
Elf64_Sym *Sym = _SymTab + SymIndex;
if (Sym->st_name)
{
char *SymName = _DynStr + Sym->st_name;
debug("SymName: %s", SymName);
Elf64_Sym *LibSym = ELFLookupSymbol((Elf64_Ehdr *)LibFile, SymName);
if (LibSym)
{
*GOTEntry = (Elf64_Addr)(sl.MemoryImage + LibSym->st_value);
debug("GOT[%ld]: %#lx + %#lx = %#lx", i, sl.MemoryImage, LibSym->st_value, *GOTEntry);
}
}
break;
}
default:
{
fixme("RelType %d not supported", RelType);
break;
}
}
debug("GOT[%ld](%#lx): %#lx", i, GOTEntry, *GOTEntry);
}
}
else
{
debug("GOT section not found");
}
}
}
sl.Address = r_cst(uint64_t, LibFile);
debug("Casted LibFile %#lx -> %#lx", LibFile, sl.Address);
sl.Length = Length;
debug("Library %s loaded at %#lx (full file: %#lx)", Identifier, sl.MemoryImage, LibFile);
Libs.push_back(sl);
return true;
}
void SearchLibrary(char *Identifier)
{
UNUSED(Identifier);
SmartLock(ExecuteServiceLock);
}
SharedLibraries GetLibrary(char *Identifier)
{
SmartLock(ExecuteServiceLock);
foreach (auto Lib in Libs)
{
if (strcmp(Lib.Identifier, Identifier) == 0)
{
Lib.RefCount++;
debug("Library %s found (%#lx %#lx)", Identifier, Lib.Address, Lib.MemoryImage);
return Lib;
}
}
// throw std::runtime_error("Library not found");
return SharedLibraries();
}
}