87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
/*
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mini - a Free Software replacement for the Nintendo/BroadOn IOS.
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ELF loader
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Copyright (C) 2008, 2009 Hector Martin "marcan" <marcan@marcansoft.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, version 2.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "types.h"
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#include "utils.h"
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#include "start.h"
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#include "hollywood.h"
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#include "string.h"
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#include "elf.h"
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typedef struct {
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u32 hdrsize;
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u32 loadersize;
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u32 elfsize;
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u32 argument;
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} ioshdr;
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void *loadelf(const u8 *elf) {
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if(memcmp("\x7F" "ELF\x01\x02\x01",elf,7)) {
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panic(0xE3);
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}
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Elf32_Ehdr *ehdr = (Elf32_Ehdr*)elf;
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if(ehdr->e_phoff == 0) {
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panic(0xE4);
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}
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int count = ehdr->e_phnum;
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Elf32_Phdr *phdr = (Elf32_Phdr*)(elf + ehdr->e_phoff);
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while(count--)
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{
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if(phdr->p_type == PT_LOAD) {
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const void *src = elf + phdr->p_offset;
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memcpy(phdr->p_paddr, src, phdr->p_filesz);
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}
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phdr++;
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}
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return ehdr->e_entry;
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}
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static inline void disable_boot0()
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{
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set32(HW_BOOT0, 0x1000);
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}
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static inline void mem_setswap()
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{
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set32(HW_MEMMIRR, 0x20);
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}
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void *_main(void *base)
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{
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ioshdr *hdr = (ioshdr*)base;
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u8 *elf;
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void *entry;
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elf = (u8*) base;
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elf += hdr->hdrsize + hdr->loadersize;
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debug_output(0xF1);
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mem_setswap(1);
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disable_boot0(1);
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entry = loadelf(elf);
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debug_output(0xC1);
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return entry;
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}
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