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#ifndef APOS_ELF_H
#define APOS_ELF_H
/**
* @file elf.h
* ELF file handling.
*
* \todo Other file formats?
*/
#include <apos/attrs.h>
#include <apos/types.h>
#include <apos/vmem.h>
#define EI_MAGIC 0x7f454c46
#define ELFCLASSNONE 0x0
#define ELFCLASS32 0x1
#define ELFCLASS64 0x2
#define ELFDATANONE 0x0
#define ELFDATA2LSB 0x1
#define ELFDATA2MSB 0x2
#define ELFOSABI_NONE 0x0
#define ELFOSABI_SYSV 0x0
#define ELFOSABI_NETBSD 0x2
#define ELFOSABI_LINUX 0x3
#define ELFOSABI_HURD 0x4
#define ELFOSABI_FREEBSD 0x9
#define ELFOSABI_OPENBSD 0xc
#define ET_NONE 0x0
#define ET_REL 0x1
#define ET_EXEC 0x2
#define ET_DYN 0x3
#define ET_CORE 0x4
#define EM_RISCV 0xf3
struct __packed elf_ident {
uint32_t ei_magic;
uint8_t ei_class;
uint8_t ei_data;
uint8_t ei_version;
uint8_t ei_osabi;
uint8_t ei_abiversion;
uint8_t ei_pad[7];
};
struct __packed elf32_header {
struct elf_ident e_ident;
uint16_t e_type;
uint16_t e_machine;
uint32_t e_version;
uint32_t e_entry;
uint32_t e_phoff;
uint32_t e_shoff;
uint32_t e_flags;
uint16_t e_ehsize;
uint16_t e_phentsize;
uint16_t e_phnum;
uint16_t e_shentsize;
uint16_t e_shnum;
uint16_t e_shstrndx;
};
struct __packed elf64_header {
struct elf_ident e_ident;
uint16_t e_type;
uint16_t e_machine;
uint32_t e_version;
uint64_t e_entry;
uint64_t e_phoff;
uint64_t e_shoff;
uint32_t e_flags;
uint16_t e_ehsize;
uint16_t e_phentsize;
uint16_t e_phnum;
uint16_t e_shentsize;
uint16_t e_shnum;
uint16_t e_shstrndx;
};
#define PT_NULL 0x0
#define PT_LOAD 0x1
#define PT_DYNAMIC 0x2
#define PT_INTERP 0x3
#define PT_NOTE 0x4
#define PT_SHLIB 0x5
#define PT_PHDR 0x6
#define PT_TLS 0x7
#define PT_LOOS 0x60000000
#define PT_HIOS 0x6fffffff
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
#define PF_X (1 << 0)
#define PF_W (1 << 1)
#define PF_R (1 << 2)
struct __packed program32_header {
uint32_t p_type;
uint32_t p_offset;
uint32_t p_vaddr;
uint32_t p_paddr;
uint32_t p_filesz;
uint32_t p_memsz;
uint32_t p_flags;
uint32_t p_align;
};
struct __packed program64_header {
uint32_t p_type;
uint32_t p_flags;
uint64_t p_offset;
uint64_t p_vaddr;
uint64_t p_paddr;
uint64_t p_filesz;
uint64_t p_memsz;
uint64_t p_align;
};
#define SHT_NULL 0x0
#define SH_PROGBITS 0x1
#define SHT_SYMTAB 0x2
#define SHT_STRTAB 0x3
#define SHT_RELA 0x4
#define SHT_HASH 0x5
#define SHT_DYNAMIC 0x6
#define SHT_NOTE 0x7
#define SHT_NOBITS 0x8
#define SHT_REL 0x9
#define SHT_SHLIB 0x0a
#define SHT_DYNSYM 0x0b
#define SHT_INIT_ARRAY 0x0e
#define SHT_FINI_ARRAY 0x0f
#define SHT_PREINIT_ARRAY 0x10
#define SHT_GROUP 0x11
#define SHT_SYMTAB_SHNDX 0x12
#define SHT_NUM 0x13
#define SHF_WRITE 0x1
#define SHF_ALLOC 0x2
#define SHF_EXECINSTR 0x4
#define SHF_MERGE 0x10
#define SHF_STRINGS 0x20
#define SHF_INFO_LINK 0x40
#define SHF_LINK_ODER 0x80
#define SHF_OS_NONCONFORMING 0x100
#define SHF_GROUP 0x200
#define SHF_TLS 0x400
#define SHF_MASKOS 0x0ff00000
#define SHF_MASKPROC 0xf0000000
struct __packed section32_header {
uint32_t sh_name;
uint32_t sh_type;
uint32_t sh_flags;
uint32_t sh_addr;
uint32_t sh_offset;
uint32_t sh_size;
uint32_t sh_link;
uint32_t sh_info;
uint32_t sh_addralign;
uint32_t sh_entsize;
};
struct __packed section64_header {
uint32_t sh_name;
uint32_t sh_type;
uint64_t sh_flags;
uint64_t sh_addr;
uint64_t sh_offset;
uint64_t sh_size;
uint32_t sh_link;
uint32_t sh_info;
uint64_t sh_addralign;
uint64_t s_entsize;
};
#define elf_indent(e) ((struct elf_ident *)e)
#define elf64_header(e) ((struct elf64_header *)e)
#define elf32_header(e) ((struct elf32_header *)e)
#define program64_header(p) ((struct program64_header *)p)
#define program32_header(p) ((struct program32_header *)p)
#define section64_header(s) ((struct section64_header *)s)
#define section32_header(s) ((struct section32_header *)s)
#define elf_header_prop(c, e, p) \
(c == ELFCLASS64 ? elf64_header(e)->p : elf32_header(e)->p)
#define program_header_prop(c, e, p) \
(c == ELFCLASS64 ? program64_header(e)->p : program32_header(e)->p)
#define section_header_prop(c, e, p) \
(c == ELFCLASS64 ? section64_header(e)->p : section32_header(e)->p)
vm_t load_elf(struct tcb *t, vm_t binary, vm_t interp);
#endif /* APOS_ELF_H */
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