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authorbunnei <ericbunnie@gmail.com>2014-06-17 00:03:13 +0200
committerbunnei <ericbunnie@gmail.com>2014-06-17 00:03:13 +0200
commit0aca202ae936d3fccbab34f36d9246e0598849a5 (patch)
treefff4a16ed505ebddcc3048cf734db0237839d338 /src/core/loader
parentLoader: Added stubbed detection of CXI and CCI files. (diff)
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Diffstat (limited to 'src/core/loader')
-rw-r--r--src/core/loader/elf_reader.cpp190
-rw-r--r--src/core/loader/elf_reader.h75
-rw-r--r--src/core/loader/elf_types.h281
-rw-r--r--src/core/loader/loader.cpp205
-rw-r--r--src/core/loader/loader.h54
5 files changed, 805 insertions, 0 deletions
diff --git a/src/core/loader/elf_reader.cpp b/src/core/loader/elf_reader.cpp
new file mode 100644
index 000000000..123747f8e
--- /dev/null
+++ b/src/core/loader/elf_reader.cpp
@@ -0,0 +1,190 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include <string>
+
+#include "common/common.h"
+
+#include "common/symbols.h"
+#include "core/mem_map.h"
+#include "core/loader/elf_reader.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)
+{
+ 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);
+
+ entryPoint = header->e_entry;
+
+ LoadSymbols();
+}
+
+const char *ElfReader::GetSectionName(int section) const
+{
+ if (sections[section].sh_type == SHT_NULL)
+ return nullptr;
+
+ int nameOffset = sections[section].sh_name;
+ char *ptr = (char*)GetSectionDataPtr(header->e_shstrndx);
+
+ if (ptr)
+ return ptr + nameOffset;
+ else
+ return nullptr;
+}
+
+bool ElfReader::LoadInto(u32 vaddr)
+{
+ DEBUG_LOG(MASTER_LOG,"String section: %i", header->e_shstrndx);
+
+ // Should we relocate?
+ bRelocate = (header->e_type != ET_EXEC);
+
+ if (bRelocate)
+ {
+ DEBUG_LOG(MASTER_LOG,"Relocatable module");
+ entryPoint += vaddr;
+ }
+ else
+ {
+ DEBUG_LOG(MASTER_LOG,"Prerelocated executable");
+ }
+
+ INFO_LOG(MASTER_LOG,"%i segments:", header->e_phnum);
+
+ // First pass : Get the bits into RAM
+ u32 segmentVAddr[32];
+
+ u32 baseAddress = bRelocate?vaddr:0;
+
+ for (int i = 0; i < header->e_phnum; i++)
+ {
+ Elf32_Phdr *p = segments + i;
+
+ INFO_LOG(MASTER_LOG, "Type: %i Vaddr: %08x Filesz: %i Memsz: %i ", p->p_type, p->p_vaddr, p->p_filesz, p->p_memsz);
+
+ if (p->p_type == PT_LOAD)
+ {
+ segmentVAddr[i] = baseAddress + p->p_vaddr;
+ u32 writeAddr = segmentVAddr[i];
+
+ const u8 *src = GetSegmentPtr(i);
+ u8 *dst = Memory::GetPointer(writeAddr);
+ u32 srcSize = p->p_filesz;
+ u32 dstSize = p->p_memsz;
+ u32 *s = (u32*)src;
+ u32 *d = (u32*)dst;
+ for (int j = 0; j < (int)(srcSize + 3) / 4; j++)
+ {
+ *d++ = /*_byteswap_ulong*/(*s++);
+ }
+ if (srcSize < dstSize)
+ {
+ //memset(dst + srcSize, 0, dstSize-srcSize); //zero out bss
+ }
+ INFO_LOG(MASTER_LOG,"Loadable Segment Copied to %08x, size %08x", writeAddr, p->p_memsz);
+ }
+ }
+
+
+ INFO_LOG(MASTER_LOG,"Done loading.");
+ return true;
+}
+
+SectionID ElfReader::GetSectionByName(const char *name, int firstSection) const
+{
+ for (int i = firstSection; i < header->e_shnum; i++)
+ {
+ const char *secname = GetSectionName(i);
+
+ if (secname != nullptr && strcmp(name, secname) == 0)
+ return i;
+ }
+ return -1;
+}
+
+bool ElfReader::LoadSymbols()
+{
+ bool hasSymbols = false;
+ SectionID sec = GetSectionByName(".symtab");
+ if (sec != -1)
+ {
+ int stringSection = sections[sec].sh_link;
+ const char *stringBase = (const char *)GetSectionDataPtr(stringSection);
+
+ //We have a symbol table!
+ Elf32_Sym *symtab = (Elf32_Sym *)(GetSectionDataPtr(sec));
+ int numSymbols = sections[sec].sh_size / sizeof(Elf32_Sym);
+ for (int sym = 0; sym < numSymbols; sym++)
+ {
+ int size = symtab[sym].st_size;
+ if (size == 0)
+ continue;
+
+ // int bind = symtab[sym].st_info >> 4;
+ int type = symtab[sym].st_info & 0xF;
+
+ const char *name = stringBase + symtab[sym].st_name;
+
+ Symbols::Add(symtab[sym].st_value, name, size, type);
+
+ hasSymbols = true;
+ }
+ }
+
+ return hasSymbols;
+}
diff --git a/src/core/loader/elf_reader.h b/src/core/loader/elf_reader.h
new file mode 100644
index 000000000..6f0ad84b3
--- /dev/null
+++ b/src/core/loader/elf_reader.h
@@ -0,0 +1,75 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/loader/elf_types.h"
+
+enum KnownElfTypes
+{
+ KNOWNELF_PSP = 0,
+ KNOWNELF_DS = 1,
+ KNOWNELF_GBA = 2,
+ KNOWNELF_GC = 3,
+};
+
+typedef int SectionID;
+
+class ElfReader
+{
+private:
+ char *base;
+ u32 *base32;
+
+ Elf32_Ehdr *header;
+ Elf32_Phdr *segments;
+ Elf32_Shdr *sections;
+
+ u32 *sectionAddrs;
+ bool bRelocate;
+ u32 entryPoint;
+
+public:
+ ElfReader(void *ptr);
+ ~ElfReader() { }
+
+ u32 Read32(int off) const { return base32[off>>2]; }
+
+ // Quick accessors
+ ElfType GetType() const { return (ElfType)(header->e_type); }
+ ElfMachine GetMachine() const { return (ElfMachine)(header->e_machine); }
+ u32 GetEntryPoint() const { return entryPoint; }
+ u32 GetFlags() const { return (u32)(header->e_flags); }
+ bool LoadInto(u32 vaddr);
+ bool LoadSymbols();
+
+ int GetNumSegments() const { return (int)(header->e_phnum); }
+ int GetNumSections() const { return (int)(header->e_shnum); }
+ const u8 *GetPtr(int offset) const { return (u8*)base + offset; }
+ const char *GetSectionName(int section) const;
+ const u8 *GetSectionDataPtr(int section) const
+ {
+ if (section < 0 || section >= header->e_shnum)
+ return nullptr;
+ if (sections[section].sh_type != SHT_NOBITS)
+ return GetPtr(sections[section].sh_offset);
+ else
+ return nullptr;
+ }
+ bool IsCodeSection(int section) const
+ {
+ return sections[section].sh_type == SHT_PROGBITS;
+ }
+ const u8 *GetSegmentPtr(int segment)
+ {
+ return GetPtr(segments[segment].p_offset);
+ }
+ u32 GetSectionAddr(SectionID section) const { return sectionAddrs[section]; }
+ int GetSectionSize(SectionID section) const { return sections[section].sh_size; }
+ SectionID GetSectionByName(const char *name, int firstSection = 0) const; //-1 for not found
+
+ bool DidRelocate() {
+ return bRelocate;
+ }
+};
diff --git a/src/core/loader/elf_types.h b/src/core/loader/elf_types.h
new file mode 100644
index 000000000..f1bf3db72
--- /dev/null
+++ b/src/core/loader/elf_types.h
@@ -0,0 +1,281 @@
+// Copyright 2013 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+// ELF Header Constants
+
+// File type
+enum ElfType
+{
+ ET_NONE = 0,
+ ET_REL = 1,
+ ET_EXEC = 2,
+ ET_DYN = 3,
+ ET_CORE = 4,
+ ET_LOPROC = 0xFF00,
+ ET_HIPROC = 0xFFFF,
+};
+
+// Machine/Architecture
+enum ElfMachine
+{
+ EM_NONE = 0,
+ EM_M32 = 1,
+ EM_SPARC = 2,
+ EM_386 = 3,
+ EM_68K = 4,
+ EM_88K = 5,
+ EM_860 = 7,
+ EM_MIPS = 8
+};
+
+// File version
+#define EV_NONE 0
+#define EV_CURRENT 1
+
+// Identification index
+#define EI_MAG0 0
+#define EI_MAG1 1
+#define EI_MAG2 2
+#define EI_MAG3 3
+#define EI_CLASS 4
+#define EI_DATA 5
+#define EI_VERSION 6
+#define EI_PAD 7
+#define EI_NIDENT 16
+
+// Magic number
+#define ELFMAG0 0x7F
+#define ELFMAG1 'E'
+#define ELFMAG2 'L'
+#define ELFMAG3 'F'
+
+// File class
+#define ELFCLASSNONE 0
+#define ELFCLASS32 1
+#define ELFCLASS64 2
+
+// Encoding
+#define ELFDATANONE 0
+#define ELFDATA2LSB 1
+#define ELFDATA2MSB 2
+
+
+
+// Sections constants
+
+// Section indexes
+#define SHN_UNDEF 0
+#define SHN_LORESERVE 0xFF00
+#define SHN_LOPROC 0xFF00
+#define SHN_HIPROC 0xFF1F
+#define SHN_ABS 0xFFF1
+#define SHN_COMMON 0xFFF2
+#define SHN_HIRESERVE 0xFFFF
+
+// Section types
+#define SHT_NULL 0
+#define SHT_PROGBITS 1
+#define SHT_SYMTAB 2
+#define SHT_STRTAB 3
+#define SHT_RELA 4
+#define SHT_HASH 5
+#define SHT_DYNAMIC 6
+#define SHT_NOTE 7
+#define SHT_NOBITS 8
+#define SHT_REL 9
+#define SHT_SHLIB 10
+#define SHT_DYNSYM 11
+#define SHT_LOPROC 0x70000000
+#define SHT_HIPROC 0x7FFFFFFF
+#define SHT_LOUSER 0x80000000
+#define SHT_HIUSER 0xFFFFFFFF
+
+// Custom section types
+#define SHT_PSPREL 0x700000a0
+
+
+// Section flags
+enum ElfSectionFlags
+{
+ SHF_WRITE = 0x1,
+ SHF_ALLOC = 0x2,
+ SHF_EXECINSTR = 0x4,
+ SHF_MASKPROC = 0xF0000000,
+};
+
+// Symbol binding
+#define STB_LOCAL 0
+#define STB_GLOBAL 1
+#define STB_WEAK 2
+#define STB_LOPROC 13
+#define STB_HIPROC 15
+
+// Symbol types
+#define STT_NOTYPE 0
+#define STT_OBJECT 1
+#define STT_FUNC 2
+#define STT_SECTION 3
+#define STT_FILE 4
+#define STT_LOPROC 13
+#define STT_HIPROC 15
+
+// Undefined name
+#define STN_UNDEF 0
+
+// Relocation types
+#define R_386_NONE 0
+#define R_386_32 1
+#define R_386_PC32 2
+#define R_386_GOT32 3
+#define R_386_PLT32 4
+#define R_386_COPY 5
+#define R_386_GLOB_DAT 6
+#define R_386_JMP_SLOT 7
+#define R_386_RELATIVE 8
+#define R_386_GOTOFF 9
+#define R_386_GOTPC 10
+
+// Segment types
+#define PT_NULL 0
+#define PT_LOAD 1
+#define PT_DYNAMIC 2
+#define PT_INTERP 3
+#define PT_NOTE 4
+#define PT_SHLIB 5
+#define PT_PHDR 6
+#define PT_LOPROC 0x70000000
+#define PT_HIPROC 0x7FFFFFFF
+
+// Segment flags
+#define PF_X 1
+#define PF_W 2
+#define PF_R 4
+
+// Dynamic Array Tags
+#define DT_NULL 0
+#define DT_NEEDED 1
+#define DT_PLTRELSZ 2
+#define DT_PLTGOT 3
+#define DT_HASH 4
+#define DT_STRTAB 5
+#define DT_SYMTAB 6
+#define DT_RELA 7
+#define DT_RELASZ 8
+#define DT_RELAENT 9
+#define DT_STRSZ 10
+#define DT_SYMENT 11
+#define DT_INIT 12
+#define DT_FINI 13
+#define DT_SONAME 14
+#define DT_RPATH 15
+#define DT_SYMBOLIC 16
+#define DT_REL 17
+#define DT_RELSZ 18
+#define DT_RELENT 19
+#define DT_PLTREL 20
+#define DT_DEBUG 21
+#define DT_TEXTREL 22
+#define DT_JMPREL 23
+#define DT_LOPROC 0x70000000
+#define DT_HIPROC 0x7FFFFFFF
+
+typedef unsigned int Elf32_Addr;
+typedef unsigned short Elf32_Half;
+typedef unsigned int Elf32_Off;
+typedef signed int Elf32_Sword;
+typedef unsigned int Elf32_Word;
+
+
+// ELF file header
+struct Elf32_Ehdr
+{
+ unsigned char e_ident[EI_NIDENT];
+ Elf32_Half e_type;
+ Elf32_Half e_machine;
+ Elf32_Word e_version;
+ Elf32_Addr e_entry;
+ Elf32_Off e_phoff;
+ Elf32_Off e_shoff;
+ Elf32_Word e_flags;
+ Elf32_Half e_ehsize;
+ Elf32_Half e_phentsize;
+ Elf32_Half e_phnum;
+ Elf32_Half e_shentsize;
+ Elf32_Half e_shnum;
+ Elf32_Half e_shstrndx;
+};
+
+// Section header
+struct Elf32_Shdr
+{
+ Elf32_Word sh_name;
+ Elf32_Word sh_type;
+ Elf32_Word sh_flags;
+ Elf32_Addr sh_addr;
+ Elf32_Off sh_offset;
+ Elf32_Word sh_size;
+ Elf32_Word sh_link;
+ Elf32_Word sh_info;
+ Elf32_Word sh_addralign;
+ Elf32_Word sh_entsize;
+};
+
+// Segment header
+struct Elf32_Phdr
+{
+ Elf32_Word p_type;
+ Elf32_Off p_offset;
+ Elf32_Addr p_vaddr;
+ Elf32_Addr p_paddr;
+ Elf32_Word p_filesz;
+ Elf32_Word p_memsz;
+ Elf32_Word p_flags;
+ Elf32_Word p_align;
+};
+
+// Symbol table entry
+struct Elf32_Sym
+{
+ Elf32_Word st_name;
+ Elf32_Addr st_value;
+ Elf32_Word st_size;
+ unsigned char st_info;
+ unsigned char st_other;
+ Elf32_Half st_shndx;
+};
+
+#define ELF32_ST_BIND(i) ((i)>>4)
+#define ELF32_ST_TYPE(i) ((i)&0xf)
+#define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
+
+// Relocation entries
+struct Elf32_Rel
+{
+ Elf32_Addr r_offset;
+ Elf32_Word r_info;
+};
+
+struct Elf32_Rela
+{
+ Elf32_Addr r_offset;
+ Elf32_Word r_info;
+ Elf32_Sword r_addend;
+};
+
+#define ELF32_R_SYM(i) ((i)>>8)
+#define ELF32_R_TYPE(i) ((unsigned char)(i))
+#define ELF32_R_INFO(s,t) (((s)<<8 )+(unsigned char)(t))
+
+
+struct Elf32_Dyn
+{
+ Elf32_Sword d_tag;
+ union
+ {
+ Elf32_Word d_val;
+ Elf32_Addr d_ptr;
+ } d_un;
+};
diff --git a/src/core/loader/loader.cpp b/src/core/loader/loader.cpp
new file mode 100644
index 000000000..7e6922e0c
--- /dev/null
+++ b/src/core/loader/loader.cpp
@@ -0,0 +1,205 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "common/file_util.h"
+
+#include "core/loader/loader.h"
+#include "core/loader/elf_reader.h"
+#include "core/system.h"
+#include "core/core.h"
+#include "core/hle/kernel/kernel.h"
+#include "core/mem_map.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/// Loads a CTR ELF file
+bool Load_ELF(std::string &filename) {
+ 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()) {
+ u64 size = 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 {
+ return false;
+ }
+ f.Close();
+
+ return true;
+}
+
+/// Loads a CTR BIN file extracted from an ExeFS
+bool Load_BIN(std::string &filename) {
+ 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()) {
+ u64 size = f.GetSize();
+ u8* buffer = new u8[size];
+
+ f.ReadBytes(buffer, size);
+
+ u32 entry_point = 0x00100000; // Hardcoded, read from exheader
+
+ const u8 *src = buffer;
+ u8 *dst = Memory::GetPointer(entry_point);
+ u32 srcSize = size;
+ u32 *s = (u32*)src;
+ u32 *d = (u32*)dst;
+ for (int j = 0; j < (int)(srcSize + 3) / 4; j++)
+ {
+ *d++ = (*s++);
+ }
+
+ Kernel::LoadExec(entry_point);
+
+ delete[] buffer;
+ }
+ else {
+ return false;
+ }
+ f.Close();
+
+ return true;
+}
+
+namespace Loader {
+
+bool IsBootableDirectory() {
+ ERROR_LOG(TIME, "Unimplemented function!");
+ return true;
+}
+
+/**
+ * Identifies the type of a bootable file
+ * @param filename String filename of bootable file
+ * @todo (ShizZy) this function sucks... make it actually check file contents etc.
+ * @return FileType of file
+ */
+FileType IdentifyFile(std::string &filename) {
+ if (filename.size() == 0) {
+ ERROR_LOG(LOADER, "invalid filename %s", filename.c_str());
+ return FILETYPE_ERROR;
+ }
+ std::string extension = filename.size() >= 5 ? filename.substr(filename.size() - 4) : "";
+
+ if (File::IsDirectory(filename)) {
+ if (IsBootableDirectory()) {
+ return FILETYPE_DIRECTORY_CXI;
+ }
+ else {
+ return FILETYPE_NORMAL_DIRECTORY;
+ }
+ }
+ else if (!strcasecmp(extension.c_str(), ".elf")) {
+ return FILETYPE_CTR_ELF; // TODO(bunnei): Do some filetype checking :p
+ }
+ else if (!strcasecmp(extension.c_str(), ".axf")) {
+ return FILETYPE_CTR_ELF; // TODO(bunnei): Do some filetype checking :p
+ }
+ else if (!strcasecmp(extension.c_str(), ".cxi")) {
+ return FILETYPE_CTR_CXI; // TODO(bunnei): Do some filetype checking :p
+ }
+ else if (!strcasecmp(extension.c_str(), ".cci")) {
+ return FILETYPE_CTR_CCI; // TODO(bunnei): Do some filetype checking :p
+ }
+ else if (!strcasecmp(extension.c_str(), ".bin")) {
+ return FILETYPE_CTR_BIN;
+ }
+ else if (!strcasecmp(extension.c_str(), ".dat")) {
+ return FILETYPE_LAUNCHER_DAT;
+ }
+ else if (!strcasecmp(extension.c_str(), ".zip")) {
+ return FILETYPE_ARCHIVE_ZIP;
+ }
+ else if (!strcasecmp(extension.c_str(), ".rar")) {
+ return FILETYPE_ARCHIVE_RAR;
+ }
+ else if (!strcasecmp(extension.c_str(), ".r00")) {
+ return FILETYPE_ARCHIVE_RAR;
+ }
+ else if (!strcasecmp(extension.c_str(), ".r01")) {
+ return FILETYPE_ARCHIVE_RAR;
+ }
+ return FILETYPE_UNKNOWN;
+}
+
+/**
+ * Identifies and loads a bootable file
+ * @param filename String filename of bootable file
+ * @param error_string Point to string to put error message if an error has occurred
+ * @return True on success, otherwise false
+ */
+bool LoadFile(std::string &filename, std::string *error_string) {
+ INFO_LOG(LOADER, "Identifying file...");
+
+ // Note that this can modify filename!
+ switch (IdentifyFile(filename)) {
+
+ case FILETYPE_CTR_ELF:
+ return Load_ELF(filename);
+
+ case FILETYPE_CTR_BIN:
+ return Load_BIN(filename);
+
+ case FILETYPE_ERROR:
+ ERROR_LOG(LOADER, "Could not read file");
+ *error_string = "Error reading file";
+ break;
+
+ case FILETYPE_ARCHIVE_RAR:
+#ifdef WIN32
+ *error_string = "RAR file detected (Require WINRAR)";
+#else
+ *error_string = "RAR file detected (Require UnRAR)";
+#endif
+ break;
+
+ case FILETYPE_ARCHIVE_ZIP:
+#ifdef WIN32
+ *error_string = "ZIP file detected (Require WINRAR)";
+#else
+ *error_string = "ZIP file detected (Require UnRAR)";
+#endif
+ break;
+
+ case FILETYPE_NORMAL_DIRECTORY:
+ ERROR_LOG(LOADER, "Just a directory.");
+ *error_string = "Just a directory.";
+ break;
+
+ case FILETYPE_UNKNOWN_BIN:
+ case FILETYPE_UNKNOWN_ELF:
+ case FILETYPE_UNKNOWN:
+ default:
+ ERROR_LOG(LOADER, "Failed to identify file");
+ *error_string = " Failed to identify file";
+ break;
+ }
+ return false;
+}
+
+} // namespace \ No newline at end of file
diff --git a/src/core/loader/loader.h b/src/core/loader/loader.h
new file mode 100644
index 000000000..9d4aaa874
--- /dev/null
+++ b/src/core/loader/loader.h
@@ -0,0 +1,54 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+namespace Loader {
+
+enum FileType {
+ FILETYPE_ERROR,
+
+ FILETYPE_CTR_CCI,
+ FILETYPE_CTR_CIA,
+ FILETYPE_CTR_CXI,
+ FILETYPE_CTR_ELF,
+ FILETYPE_CTR_BIN,
+
+ FILETYPE_LAUNCHER_DAT,
+
+ FILETYPE_DIRECTORY_CXI,
+
+ FILETYPE_UNKNOWN_BIN,
+ FILETYPE_UNKNOWN_ELF,
+
+ FILETYPE_ARCHIVE_RAR,
+ FILETYPE_ARCHIVE_ZIP,
+
+ FILETYPE_NORMAL_DIRECTORY,
+
+ FILETYPE_UNKNOWN
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Identifies the type of a bootable file
+ * @param filename String filename of bootable file
+ * @return FileType of file
+ */
+FileType IdentifyFile(std::string &filename);
+
+/**
+ * Identifies and loads a bootable file
+ * @param filename String filename of bootable file
+ * @param error_string Point to string to put error message if an error has occurred
+ * @return True on success, otherwise false
+ */
+bool LoadFile(std::string &filename, std::string *error_string);
+
+} // namespace