summaryrefslogtreecommitdiffstats
path: root/src/core/elf/elf_reader.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/elf/elf_reader.cpp')
-rw-r--r--src/core/elf/elf_reader.cpp190
1 files changed, 0 insertions, 190 deletions
diff --git a/src/core/elf/elf_reader.cpp b/src/core/elf/elf_reader.cpp
deleted file mode 100644
index c62332cec..000000000
--- a/src/core/elf/elf_reader.cpp
+++ /dev/null
@@ -1,190 +0,0 @@
-// 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/elf/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;
-}