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-rw-r--r--src/core/loader/elf.h230
1 files changed, 16 insertions, 214 deletions
diff --git a/src/core/loader/elf.h b/src/core/loader/elf.h
index 24d2f91be..3fb010113 100644
--- a/src/core/loader/elf.h
+++ b/src/core/loader/elf.h
@@ -5,226 +5,28 @@
#pragma once
#include "common/common_types.h"
+#include "core/loader/loader.h"
-// 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'
-
-// Sections constants
-
-// 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
-
-// Section flags
-enum ElfSectionFlags
-{
- SHF_WRITE = 0x1,
- SHF_ALLOC = 0x2,
- SHF_EXECINSTR = 0x4,
- SHF_MASKPROC = 0xF0000000,
-};
-
-// 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
-
-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;
-};
-
-// Relocation entries
-struct Elf32_Rel {
- Elf32_Addr r_offset;
- Elf32_Word r_info;
-};
-
-typedef int SectionID;
-
-class ElfReader {
-private:
- char *base;
- u32 *base32;
-
- Elf32_Ehdr *header;
- Elf32_Phdr *segments;
- Elf32_Shdr *sections;
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Loader namespace
- u32 *sectionAddrs;
- bool bRelocate;
- u32 entryPoint;
+namespace Loader {
+/// Loads an ELF/AXF file
+class AppLoader_ELF : public AppLoader {
public:
- ElfReader(void *ptr);
- ~ElfReader() { }
+ AppLoader_ELF(std::string& filename);
+ ~AppLoader_ELF();
- u32 Read32(int off) const { return base32[off >> 2]; }
+ /**
+ * Load the bootable file
+ * @return ResultStatus result of function
+ */
+ const ResultStatus Load();
- // 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;
- }
+private:
+ std::string filename;
+ bool is_loaded;
};
-////////////////////////////////////////////////////////////////////////////////////////////////////
-// 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);
-
} // namespace Loader
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