47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
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#include "loadelf.h"
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bool ExecIsElf(void* address)
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{
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struct Elf32_Ehdr* ehdr = (struct Elf32_Ehdr*)address;
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if (*(u8*)address + 0 != 0x7F || *(u8*)address + 1 != 'E' || *(u8*)address + 2 != 'L' || *(u8*)address + 3 != 'F')
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return false;
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if (ehdr->e_type != 2) // Executable
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return false;
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if (ehdr->e_machine != 20) // PowerPC
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return false;
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return true;
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}
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u32 LoadElf(void* address)
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{
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int i;
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struct Elf32_Ehdr* ehdr = (struct Elf32_Ehdr*)address;
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struct Elf32_Shdr* shdr = (struct Elf32_Shdr*)(address + ehdr->e_shoff + (ehdr->e_shstrndx * sizeof(struct Elf32_Shdr)));
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for (i = 0; i < ehdr->e_shnum; i++)
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{
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shdr = (struct Elf32_Shdr*)(address + ehdr->e_shoff + (i * sizeof(struct Elf32_Shdr)));
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if (!(shdr->sh_flags & 0x02) || shdr->sh_addr == 0 || shdr->sh_size == 0)
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continue;
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shdr->sh_addr &= 0x3FFFFFFF;
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shdr->sh_addr |= 0x80000000;
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if (shdr->sh_type == 8)
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_memset32((void*)shdr->sh_addr, 0, shdr->sh_size);
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else
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_memcpy((void*)shdr->sh_addr, (void*)(address + shdr->sh_offset), shdr->sh_size);
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sync_after_write((void*)shdr->sh_addr, (shdr->sh_size + 31) & (~31));
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}
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return (ehdr->e_entry & 0x3FFFFFFF) | 0x80000000;
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} |