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#ifndef _ELF_H_
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#define _ELF_H_
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#include "util/types.h"
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#include "process.h"
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#define MAX_CMDLINE_ARGS 64
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// elf header structure
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typedef struct elf_header_t {
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uint32 magic;
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uint8 elf[12];
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uint16 type; /* Object file type */
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uint16 machine; /* Architecture */
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uint32 version; /* Object file version */
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uint64 entry; /* Entry point virtual address */
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uint64 phoff; /* Program header table file offset */
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uint64 shoff; /* Section header table file offset */
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uint32 flags; /* Processor-specific flags */
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uint16 ehsize; /* ELF header size in bytes */
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uint16 phentsize; /* Program header table entry size */
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uint16 phnum; /* Program header table entry count */
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uint16 shentsize; /* Section header table entry size */
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uint16 shnum; /* Section header table entry count */
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uint16 shstrndx; /* Section header string table index */
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} elf_header;
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// segment types, attributes of elf_prog_header_t.flags
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#define SEGMENT_READABLE 0x4
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#define SEGMENT_EXECUTABLE 0x1
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#define SEGMENT_WRITABLE 0x2
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// Program segment header.
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typedef struct elf_prog_header_t {
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uint32 type; /* Segment type */
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uint32 flags; /* Segment flags */
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uint64 off; /* Segment file offset */
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uint64 vaddr; /* Segment virtual address */
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uint64 paddr; /* Segment physical address */
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uint64 filesz; /* Segment size in file */
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uint64 memsz; /* Segment size in memory */
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uint64 align; /* Segment alignment */
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} elf_prog_header;
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#define ELF_MAGIC 0x464C457FU // "\x7FELF" in little endian
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#define ELF_PROG_LOAD 1
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typedef enum elf_status_t {
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EL_OK = 0,
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EL_EIO,
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EL_ENOMEM,
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EL_NOTELF,
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EL_ERR,
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} elf_status;
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typedef struct elf_ctx_t {
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void *info;
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elf_header ehdr;
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} elf_ctx;
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elf_status elf_init(elf_ctx *ctx, void *info);
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elf_status elf_load(elf_ctx *ctx);
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void load_bincode_from_host_elf(process *p);
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#endif
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