54 lines
5.0 KiB
Markdown
54 lines
5.0 KiB
Markdown
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---
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title: "header.h"
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summary: "definitions needed to parse the ELF Header"
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---
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# `elf_target_architecture_E` - enum
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Field in [header](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_header_t---struct): **identity[4]**
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# `elf_endianness_E` - enum
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Field in [header](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_header_t---struct): **identity[5]**
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# `elf_sysabi_E` - enum
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Field in [header](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_header_t---struct): **identity[7]**
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# `elf_object_type_E` - enum
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Field in [header](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_header_t---struct): **type**
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# `elf_instruction_set_E` - enum
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Field in [header](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_header_t---struct): **isa**
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# `elf_header_T` - struct
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| Name | Type | Description |
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|----------------------------|-------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
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| identity | uint8_t[16] | Information like the used endian and the SysABI is stored in here |
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| type | uint16_t | The type of the elf file -> [elf_object_type_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_object_type_e---enum) |
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| isa | uint16_t | The used instruction set -> [elf_instruction_set_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_instruction_set_e---enum) |
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| version | uint32_t | ELF version |
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| address_entry_point | uint64_t | The start point for program execution |
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| offset_program_header | uint64_t | The position of the program header array in the file |
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| offset_section_header | uint64_t | The position of the section header array in the file |
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| flags | uint32_t | Architecture dependent, can be ignored |
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| len_header | uint16_t | The size of this header |
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| len_program_header_entry | uint16_t | The size of one program header |
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| num_program_header_entries | uint16_t | The amount of program headers |
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| len_section_header_entry | uint16_t | The size of one section header |
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| num_section_header_entries | uint16_t | The amount of section headers |
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| string_section_index | uint16_t | The section header index of the `.shstrtab` section |
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# `g_elf_target_architecture_strings` - global variable
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An array of strings matching [elf_target_architecture_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_target_architecture_e---enum).
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# `g_elf_endianness_strings` - global variable
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An array of strings matching [elf_endianess_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_endianess_e---enum).
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# `g_elf_sysabi_strings` - global variable
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An array of strings matching [elf_sysabi_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_sysabi_e---enum).
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# `g_elf_object_type_strings` - global variable
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An array of strings matching [elf_object_type_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_object_type_e---enum).
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# `g_elf_instruction_set_strings` - global variable
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An array of strings matching [elf_instruction_set_E](https://nerdcult.net/projects/noxos/docs/codebase/drivers/elf/header.h/#elf_instruction_set_e---enum).
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