70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
#include "unix.h"
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#include "debug.h"
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#include <string.h>
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uint8_t elf_main_header_byte[ELF_MAIN_HEADER_SIZE] = {
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0X7F, 0X45, 0X4C, 0X46, 0X02, 0X01, 0X01, 0X03,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X02, 0X00, 0X3E, 0X00, 0X01, 0X00, 0X00, 0X00,
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0XB0, 0X00, 0X40, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X40, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X40, 0X00, 0X38, 0X00,
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0X02, 0X00, 0X40, 0X00, 0X00, 0X00, 0X00, 0X00
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};
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uint8_t elf_text_sector_byte[ELF_TEXT_SECTOR_SIZE] = {
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0X01, 0X00, 0X00, 0X00, 0X05, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X40, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X40, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X10, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00
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};
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uint8_t elf_data_sector_byte[ELF_DATA_SECTOR_SIZE] = {
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0X01, 0X00, 0X00, 0X00, 0X06, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X10, 0X40, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X10, 0X40, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00,
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0X00, 0X10, 0X00, 0X00, 0X00, 0X00, 0X00, 0X00
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};
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void elf_main_header(uint32_t entry_point,
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uint8_t has_program,
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uint8_t for_linux,
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uint8_t for_x86_64) {
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uint32_t enter = entry_point + 0x4000b0u;
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elf_main_header_byte[16] = (has_program) ? 0x02 : 0x03;
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elf_main_header_byte[ 7] = (for_linux) ? 0x03 : 0x00;
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elf_main_header_byte[18] = (for_x86_64) ? 0x3e : 0x00;
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memcpy(&elf_main_header_byte[24], &enter, sizeof(enter));
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}
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void elf_text_sector(uint64_t text_size,
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uint64_t data_size) {
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unsigned long text = ELF_HEADER_SIZE + text_size - data_size;
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memcpy(&elf_text_sector_byte[32], &text, sizeof(text));
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memcpy(&elf_text_sector_byte[40], &text, sizeof(text));
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}
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void elf_data_sector(uint64_t text_size,
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uint64_t data_size) {
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uint64_t data = data_size;
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uint64_t core = ELF_HEADER_SIZE + text_size - data_size;
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uint64_t move = 0x401000ul + core;
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memcpy(&elf_data_sector_byte[ 8], &core, sizeof(core));
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memcpy(&elf_data_sector_byte[16], &move, sizeof(move));
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memcpy(&elf_data_sector_byte[24], &move, sizeof(move));
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memcpy(&elf_data_sector_byte[32], &data, sizeof(data));
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memcpy(&elf_data_sector_byte[40], &data, sizeof(data));
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}
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