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Loader: Cleaned up and removed unused code, refactored ELF namespace.

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This commit is contained in:
bunnei 2014-06-16 23:18:10 -04:00
parent 1da361c7ab
commit 13bdaa6c60
4 changed files with 70 additions and 209 deletions
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107
src/core/loader/elf.cpp
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@ -5,65 +5,17 @@
#include <string>
#include "common/common.h"
#include "common/file_util.h"
#include "common/symbols.h"
#include "core/mem_map.h"
#include "core/loader/elf.h"
#include "core/hle/kernel/kernel.h"
//void bswap(Elf32_Word &w) {w = Common::swap32(w);}
//void bswap(Elf32_Half &w) {w = Common::swap16(w);}
#define bswap(w) w // Dirty bswap disable for now... 3DS is little endian, anyway
static void byteswapHeader(Elf32_Ehdr &ELF_H)
{
bswap(ELF_H.e_type);
bswap(ELF_H.e_machine);
bswap(ELF_H.e_ehsize);
bswap(ELF_H.e_phentsize);
bswap(ELF_H.e_phnum);
bswap(ELF_H.e_shentsize);
bswap(ELF_H.e_shnum);
bswap(ELF_H.e_shstrndx);
bswap(ELF_H.e_version);
bswap(ELF_H.e_entry);
bswap(ELF_H.e_phoff);
bswap(ELF_H.e_shoff);
bswap(ELF_H.e_flags);
}
static void byteswapSegment(Elf32_Phdr &sec)
{
bswap(sec.p_align);
bswap(sec.p_filesz);
bswap(sec.p_flags);
bswap(sec.p_memsz);
bswap(sec.p_offset);
bswap(sec.p_paddr);
bswap(sec.p_vaddr);
bswap(sec.p_type);
}
static void byteswapSection(Elf32_Shdr &sec)
{
bswap(sec.sh_addr);
bswap(sec.sh_addralign);
bswap(sec.sh_entsize);
bswap(sec.sh_flags);
bswap(sec.sh_info);
bswap(sec.sh_link);
bswap(sec.sh_name);
bswap(sec.sh_offset);
bswap(sec.sh_size);
bswap(sec.sh_type);
}
ElfReader::ElfReader(void *ptr)
{
ElfReader::ElfReader(void *ptr) {
base = (char*)ptr;
base32 = (u32 *)ptr;
header = (Elf32_Ehdr*)ptr;
byteswapHeader(*header);
segments = (Elf32_Phdr *)(base + header->e_phoff);
sections = (Elf32_Shdr *)(base + header->e_shoff);
@ -73,8 +25,7 @@ ElfReader::ElfReader(void *ptr)
LoadSymbols();
}
const char *ElfReader::GetSectionName(int section) const
{
const char *ElfReader::GetSectionName(int section) const {
if (sections[section].sh_type == SHT_NULL)
return nullptr;
@ -87,8 +38,7 @@ const char *ElfReader::GetSectionName(int section) const
return nullptr;
}
bool ElfReader::LoadInto(u32 vaddr)
{
bool ElfReader::LoadInto(u32 vaddr) {
DEBUG_LOG(MASTER_LOG, "String section: %i", header->e_shstrndx);
// Should we relocate?
@ -188,3 +138,48 @@ bool ElfReader::LoadSymbols()
return hasSymbols;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Loader namespace
namespace Loader {
/**
* Loads an ELF file
* @param filename String filename of ELF file
* @param error_string Pointer to string to put error message if an error has occurred
* @return True on success, otherwise false
*/
bool Load_ELF(std::string& filename, std::string* error_string) {
std::string full_path = filename;
std::string path, file, extension;
SplitPath(ReplaceAll(full_path, "\\", "/"), &path, &file, &extension);
#if EMU_PLATFORM == PLATFORM_WINDOWS
path = ReplaceAll(path, "/", "\\");
#endif
File::IOFile f(filename, "rb");
if (f.IsOpen()) {
u32 size = (u32)f.GetSize();
u8* buffer = new u8[size];
ElfReader* elf_reader = NULL;
f.ReadBytes(buffer, size);
elf_reader = new ElfReader(buffer);
elf_reader->LoadInto(0x00100000);
Kernel::LoadExec(elf_reader->GetEntryPoint());
delete[] buffer;
delete elf_reader;
} else {
*error_string = "Unable to open ELF file!";
return false;
}
f.Close();
return true;
}
} // namespace Loader