mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-07-06 18:01:49 +02:00
71adda33e0
*Added HomebrewFiles Class NOTE 1: In settings/custompaths you can change the HomebrewPath and the standard is SD:/apps/. Our browser searches for EVERY .dol and .elf file in the directory even if its not called boot.dol. NOTE 2: Giantpune and me tested the homebrewbooting and it worked for every homebrew we tested except our own application. (a bit ironic) NOTE 3: Right now the information on the Buttons is the path to the Homebrew. This and the BootPrompt will be replaced with the XML information inside the path of the homebrew later but for now i am taking a break NOTE 4: Right now the button to the HomebrewMenu is next to WiiMenuButton and has the same image as the listgamebrowser. I didnt have any images so i took what i had and cyrex will change the images when he is back. Also there will be a no icon image added later.
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/*
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* Copyright (c) 2001 William L. Pitts
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* Modifications (c) 2004 Felix Domke
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are freely
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* permitted provided that the above copyright notice and this
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* paragraph and the following disclaimer are duplicated in all
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* such forms.
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*
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* This software is provided "AS IS" and without any express or
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* implied warranties, including, without limitation, the implied
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* warranties of merchantability and fitness for a particular
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* purpose.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <gccore.h>
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#include "elf_abi.h"
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/* ======================================================================
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* Determine if a valid ELF image exists at the given memory location.
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* First looks at the ELF header magic field, the makes sure that it is
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* executable and makes sure that it is for a PowerPC.
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* ====================================================================== */
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s32 valid_elf_image (void *addr)
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{
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Elf32_Ehdr *ehdr; /* Elf header structure pointer */
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ehdr = (Elf32_Ehdr *) addr;
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if (!IS_ELF (*ehdr))
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return 0;
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if (ehdr->e_type != ET_EXEC)
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return -1;
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if (ehdr->e_machine != EM_PPC)
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return -1;
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return 1;
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}
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/* ======================================================================
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* A very simple elf loader, assumes the image is valid, returns the
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* entry point address.
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* ====================================================================== */
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u32 load_elf_image (void *addr)
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{
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Elf32_Ehdr *ehdr;
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Elf32_Shdr *shdr;
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u8 *strtab = 0;
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u8 *image;
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int i;
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ehdr = (Elf32_Ehdr *) addr;
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/* Find the section header string table for output info */
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shdr = (Elf32_Shdr *) (addr + ehdr->e_shoff +
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(ehdr->e_shstrndx * sizeof (Elf32_Shdr)));
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if (shdr->sh_type == SHT_STRTAB)
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strtab = (u8 *) (addr + shdr->sh_offset);
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/* Load each appropriate section */
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for (i = 0; i < ehdr->e_shnum; ++i) {
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shdr = (Elf32_Shdr *) (addr + ehdr->e_shoff +
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(i * sizeof (Elf32_Shdr)));
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if (!(shdr->sh_flags & SHF_ALLOC)
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|| shdr->sh_addr == 0 || shdr->sh_size == 0) {
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continue;
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}
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shdr->sh_addr &= 0x3FFFFFFF;
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shdr->sh_addr |= 0x80000000;
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if (strtab) {
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/*printf ("%sing section %s @ 0x%08x (0x%08x bytes)\n",
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(shdr->sh_type == SHT_NOBITS) ?
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"clear" : "load",
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&strtab[shdr->sh_name],
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(u32) shdr->sh_addr,
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(u32) shdr->sh_size);*/
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}
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if (shdr->sh_type == SHT_NOBITS) {
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memset ((void *) shdr->sh_addr, 0, shdr->sh_size);
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} else {
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image = (u8 *) addr + shdr->sh_offset;
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memcpy ((void *) shdr->sh_addr,
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(const void *) image,
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shdr->sh_size);
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}
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DCFlushRangeNoSync ((void *) shdr->sh_addr, shdr->sh_size);
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}
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return (ehdr->e_entry & 0x3FFFFFFF) | 0x80000000;
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}
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