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Remove unused code

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This commit is contained in:
Maschell 2022-02-13 14:22:33 +01:00
parent 7eb5d075f3
commit 65e460606f
2 changed files with 0 additions and 107 deletions
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102
source/ElfUtils.cpp
View File

@ -4,112 +4,10 @@
#include <coreinit/debug.h>
#include <coreinit/dynload.h>
#include <coreinit/memdefaultheap.h>
#include <whb/file.h>
#include <whb/log.h>
#include <whb/sdcard.h>
#include "ElfUtils.h"
#include "elfio/elfio.hpp"
int32_t LoadFileToMem(const char *relativefilepath, char **fileOut, uint32_t *sizeOut) {
char path[256];
int result = 0;
char *sdRootPath = nullptr;
if (!WHBMountSdCard()) {
DEBUG_FUNCTION_LINE("Failed to mount SD Card...");
result = -1;
goto exit;
}
sdRootPath = WHBGetSdCardMountPath();
sprintf(path, "%s/%s", sdRootPath, relativefilepath);
DEBUG_FUNCTION_LINE("Loading file %s.", path);
*fileOut = WHBReadWholeFile(path, sizeOut);
if (!(*fileOut)) {
result = -2;
DEBUG_FUNCTION_LINE("WHBReadWholeFile(%s) returned NULL", path);
goto exit;
}
exit:
WHBUnmountSdCard();
return result;
}
uint32_t load_loader_elf_from_sd(unsigned char *baseAddress, const char *relativePath) {
char *elf_data = nullptr;
uint32_t fileSize = 0;
if (LoadFileToMem(relativePath, &elf_data, &fileSize) != 0) {
OSFatal("Failed to load hook_payload.elf from the SD Card.");
}
uint32_t result = load_loader_elf(baseAddress, elf_data, fileSize);
MEMFreeToDefaultHeap((void *) elf_data);
return result;
}
uint32_t load_loader_elf(unsigned char *baseAddress, char *elf_data, uint32_t fileSize) {
ELFIO::Elf32_Ehdr *ehdr;
ELFIO::Elf32_Phdr *phdrs;
uint8_t *image;
int32_t i;
ehdr = (ELFIO::Elf32_Ehdr *) elf_data;
if (ehdr->e_phoff == 0 || ehdr->e_phnum == 0) {
return 0;
}
if (ehdr->e_phentsize != sizeof(ELFIO::Elf32_Phdr)) {
return 0;
}
phdrs = (ELFIO::Elf32_Phdr *) (elf_data + ehdr->e_phoff);
for (i = 0; i < ehdr->e_phnum; i++) {
if (phdrs[i].p_type != PT_LOAD) {
continue;
}
if (phdrs[i].p_filesz > phdrs[i].p_memsz) {
continue;
}
if (!phdrs[i].p_filesz) {
continue;
}
uint32_t p_paddr = phdrs[i].p_paddr + (uint32_t) baseAddress;
image = (uint8_t *) (elf_data + phdrs[i].p_offset);
memcpy((void *) p_paddr, image, phdrs[i].p_filesz);
DCFlushRange((void *) p_paddr, phdrs[i].p_filesz);
if (phdrs[i].p_flags & PF_X) {
ICInvalidateRange((void *) p_paddr, phdrs[i].p_memsz);
}
}
//! clear BSS
auto *shdr = (ELFIO::Elf32_Shdr *) (elf_data + ehdr->e_shoff);
for (i = 0; i < ehdr->e_shnum; i++) {
const char *section_name = ((const char *) elf_data) + shdr[ehdr->e_shstrndx].sh_offset + shdr[i].sh_name;
if (section_name[0] == '.' && section_name[1] == 'b' && section_name[2] == 's' && section_name[3] == 's') {
memset((void *) (shdr[i].sh_addr + baseAddress), 0, shdr[i].sh_size);
DCFlushRange((void *) (shdr[i].sh_addr + baseAddress), shdr[i].sh_size);
} else if (section_name[0] == '.' && section_name[1] == 's' && section_name[2] == 'b' && section_name[3] == 's' && section_name[4] == 's') {
memset((void *) (shdr[i].sh_addr + baseAddress), 0, shdr[i].sh_size);
DCFlushRange((void *) (shdr[i].sh_addr + baseAddress), shdr[i].sh_size);
}
}
return ehdr->e_entry;
}
bool ElfUtils::doRelocation(std::vector<std::shared_ptr<RelocationData>> &relocData, relocation_trampolin_entry_t *tramp_data, uint32_t tramp_length) {
for (auto const &curReloc : relocData) {
std::string functionName = curReloc->getName();

5
source/ElfUtils.h
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@ -12,11 +12,6 @@
extern "C" {
#endif
int32_t LoadFileToMem(const char *relativefilepath, char **fileOut, uint32_t *sizeOut);
uint32_t load_loader_elf_from_sd(unsigned char *baseAddress, const char *relativePath);
uint32_t load_loader_elf(unsigned char *baseAddress, char *elf_data, uint32_t fileSize);
// clang-format off
#define R_PPC_NONE 0
#define R_PPC_ADDR32 1