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https://github.com/Mathewnd/Astral.git
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Matheus
82 lines
1.6 KiB
C
82 lines
1.6 KiB
C
#ifndef _ELF_H_INCLUDE
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#define _ELF_H_INCLUDE
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#include <kernel/sched.h>
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#include <kernel/vfs.h>
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#include <stddef.h>
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#include <stdint.h>
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#define ELF_MAGIC 0x464c457f // 0x7F ELF
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#define ELF_BITS_64 2
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#define ELF_ISA_X86_64 0x3E
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#define ELF_ENDIANNESS_LITTLE 1
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#define ELF_RELOCATABLE 1
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#define ELF_EXECUTABLE 2
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#define ELF_SHARED 3
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#define ELF_CORE 4
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#define ELF_SEGMENT_NULL 0
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#define ELF_SEGMENT_LOAD 1
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#define ELF_SEGMENT_DYNAMIC 2
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#define ELF_SEGMENT_INTERP 3
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#define ELF_SEGMENT_NOTE 4
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#define ELF_FLAG_EXECUTABLE 1
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#define ELF_FLAG_WRITABLE 2
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#define ELF_FLAG_READABLE 4
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#define STACK_TOP 0x800000000000
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#define AT_NULL 0
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#define AT_PHDR 3
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#define AT_PHENT 4
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#define AT_PHNUM 5
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#define AT_ENTRY 9
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typedef struct{
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uint32_t magic;
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uint8_t bits;
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uint8_t endianness;
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uint8_t headversion;
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uint8_t abi;
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uint64_t padding;
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uint16_t type;
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uint16_t isa;
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uint32_t elfver;
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uint64_t entry;
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uint64_t ph_pos;
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uint64_t sh_pos;
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uint32_t flags;
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uint16_t headsize;
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uint16_t ph_size;
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uint16_t ph_count;
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uint16_t sh_size;
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uint16_t sh_count;
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uint16_t sh_names;
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} __attribute__((packed)) elf_header64;
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#define PH_TYPE_LOAD 1
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#define PH_TYPE_DYNAMIC 2
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#define PH_TYPE_INTERPRETER 3
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#define PH_TYPE_NOTE 4
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typedef struct{
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uint32_t type;
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uint32_t flags;
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uint64_t offset;
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uint64_t memaddr;
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uint64_t undefined;
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uint64_t fsize;
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uint64_t msize;
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uint64_t alignment;
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} elf_ph64;
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// loads an elf executable from file, setting target thread with appropriate
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// values for it
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// also sets up the stack for said executable
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int elf_load(thread_t* thread, vnode_t* node, char** argv, char** env);
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#endif
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