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more progress on module to memory loading

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This commit is contained in:
georgemoralis 2023-05-25 13:16:53 +03:00
parent 5d0a5af495
commit e87b793083
2 changed files with 43 additions and 2 deletions
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3
src/Core/Memory.h
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@ -1,5 +1,8 @@
#pragma once
constexpr u64 SYSTEM_RESERVED = 0x800000000u;
constexpr u64 CODE_BASE_OFFSET = 0x100000000u;
namespace Memory
{
namespace VirtualMemory {

42
src/Core/PS4/Linker.cpp
View file

@ -1,5 +1,10 @@
#include "Linker.h"
#include "../Memory.h"
#include "../../Util/Log.h"
constexpr bool debug_loader = true;
static u64 g_load_addr = SYSTEM_RESERVED + CODE_BASE_OFFSET;
Linker::Linker()
{
@ -37,7 +42,7 @@ Module* Linker::LoadModule(const std::string& elf_name)
auto* m = new Module;
m->elf = new Elf;
m->elf->Open(elf_name);//load elf
if (m->elf->isElfFile())
{
LoadModuleToMemory(m);
@ -69,8 +74,41 @@ void Linker::LoadModuleToMemory(Module* m)
auto* elf_header = m->elf->GetElfHeader();
auto* elf_pheader = m->elf->GetProgramHeader();
u64 base_size = calculate_base_size(elf_header,elf_pheader);
u64 base_size = calculate_base_size(elf_header, elf_pheader);
m->aligned_base_size = (base_size & ~(static_cast<u64>(0x1000) - 1)) + 0x1000;//align base size to 0x1000 block size (TODO is that the default block size or it can be changed?
m->base_virtual_addr = Memory::VirtualMemory::memory_alloc(g_load_addr, m->aligned_base_size);
LOG_INFO_IF(debug_loader, "====Load Module to Memory ========\n");
LOG_INFO_IF(debug_loader, "base_virtual_addr ......: {:#018x}\n", m->base_virtual_addr);
LOG_INFO_IF(debug_loader, "base_size ..............: {:#018x}\n", base_size);
LOG_INFO_IF(debug_loader, "aligned_base_size ......: {:#018x}\n", m->aligned_base_size);
for (u16 i = 0; i < elf_header->e_phnum; i++)
{
switch(elf_pheader[i].p_type)
{
case PT_LOAD:
case PT_SCE_RELRO:
if (elf_pheader[i].p_memsz != 0)
{
u64 segment_addr = elf_pheader[i].p_vaddr + m->base_virtual_addr;
u64 segment_file_size = elf_pheader[i].p_filesz;
u64 segment_memory_size = get_aligned_size(elf_pheader + i);
auto segment_mode = m->elf->ElfPheaderFlagsStr((elf_pheader + i)->p_flags);
LOG_INFO_IF(debug_loader, "program header = [{}] type = {}\n",i,m->elf->ElfPheaderTypeStr(elf_pheader[i].p_type));
LOG_INFO_IF(debug_loader, "segment_addr ..........: {:#018x}\n", segment_addr);
LOG_INFO_IF(debug_loader, "segment_file_size .....: {:#018x}\n", segment_file_size);
LOG_INFO_IF(debug_loader, "segment_memory_size ...: {:#018x}\n", segment_memory_size);
LOG_INFO_IF(debug_loader, "segment_mode ..........: {}\n", segment_mode);
}
else
{
LOG_ERROR_IF(debug_loader, "p_memsz==0 in type {}\n", m->elf->ElfPheaderTypeStr(elf_pheader[i].p_type));
}
break;
default:
LOG_ERROR_IF(debug_loader, "Unimplemented type {}\n", m->elf->ElfPheaderTypeStr(elf_pheader[i].p_type));
}
}
}