39 lines
960 B
C++
39 lines
960 B
C++
#include "elf.hpp"
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#include "util.hpp"
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kernel::ELF::ELF(void* location)
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{
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this->location = location;
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}
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void* kernel::ELF::entry()
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{
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Header* fileHeader = (Header*) location;
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return fileHeader->entry;
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}
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int kernel::ELF::validate()
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{
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Header* fileHeader = (Header*) location;
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if(fileHeader->magic != 0x464c457f)
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return -1;
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else if((ISA) fileHeader->machine != HOST_ISA)
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return -1;
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else if((Endianness) fileHeader->endianness != Little)
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return -1;
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return 0;
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}
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int kernel::ELF::load()
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{
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Header* fileHeader = (Header*) location;
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ProgramHeader* programHeader = (ProgramHeader*) ((size_t) location + fileHeader->phoffset);
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int count = (int) fileHeader->phcount;
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for(int i = 0; i < count; i++)
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{
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if((SegmentType) programHeader->type != Load)
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continue;
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memcpy(programHeader->vaddr, location + programHeader->offset, programHeader->filesize);
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}
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return 0;
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} |