mirror of
https://github.com/wiiu-env/HBLInstallerWrapper.git
synced 2024-11-16 19:49:14 +01:00
70 lines
2.1 KiB
C++
70 lines
2.1 KiB
C++
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#include <string.h>
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#include <coreinit/title.h>
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#include <sysapp/title.h>
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#include <sysapp/launch.h>
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#include <coreinit/ios.h>
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#include <coreinit/cache.h>
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#include "../homebrew_launcher_installer/src/elf_abi.h"
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#include "payload_elf.h"
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static unsigned int load_elf_image (const uint8_t* elfstart) {
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Elf32_Ehdr *ehdr;
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Elf32_Phdr *phdrs;
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unsigned char *image;
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int i;
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ehdr = (Elf32_Ehdr *) elfstart;
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if(ehdr->e_phoff == 0 || ehdr->e_phnum == 0)
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return 0;
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if(ehdr->e_phentsize != sizeof(Elf32_Phdr))
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return 0;
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phdrs = (Elf32_Phdr*)(elfstart + ehdr->e_phoff);
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for(i = 0; i < ehdr->e_phnum; i++) {
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if(phdrs[i].p_type != PT_LOAD)
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continue;
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if(phdrs[i].p_filesz > phdrs[i].p_memsz)
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continue;
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if(!phdrs[i].p_filesz)
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continue;
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unsigned int p_paddr = phdrs[i].p_paddr;
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image = (unsigned char *) (elfstart + phdrs[i].p_offset);
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memcpy ((void *) p_paddr, image, phdrs[i].p_filesz);
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DCFlushRange((void*)p_paddr, phdrs[i].p_filesz);
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if(phdrs[i].p_flags & PF_X)
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ICInvalidateRange ((void *) p_paddr, phdrs[i].p_memsz);
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}
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//! clear BSS
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Elf32_Shdr *shdr = (Elf32_Shdr *) (elfstart + ehdr->e_shoff);
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for(i = 0; i < ehdr->e_shnum; i++) {
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const char *section_name = ((const char*)elfstart) + shdr[ehdr->e_shstrndx].sh_offset + shdr[i].sh_name;
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if(section_name[0] == '.' && section_name[1] == 'b' && section_name[2] == 's' && section_name[3] == 's') {
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memset((void*)shdr[i].sh_addr, 0, shdr[i].sh_size);
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DCFlushRange((void*)shdr[i].sh_addr, shdr[i].sh_size);
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} else if(section_name[0] == '.' && section_name[1] == 's' && section_name[2] == 'b' && section_name[3] == 's' && section_name[4] == 's') {
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memset((void*)shdr[i].sh_addr, 0, shdr[i].sh_size);
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DCFlushRange((void*)shdr[i].sh_addr, shdr[i].sh_size);
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}
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}
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return ehdr->e_entry;
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}
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int main(int argc, char **argv) {
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uint32_t res = load_elf_image(payload_elf);
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if(res != 0) {
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((int (*)(int, char **)) res)(0, nullptr);
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}
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return 0;
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}
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