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#ifndef DEF_ELF_H
#define DEF_ELF_H
#include <types.h>
#include <task/task.h>
/* elf_phdr_t :: p_type : program header entries types */
#define PT_NULL 0
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
/* elf_phdr_t :: p_flags : program header entries flags */
#define PF_X (1 << 0)
#define PF_W (1 << 1)
#define PF_R (1 << 2)
struct elf_ehdr {
uint8_t e_ident[16]; /* ELF identification */
uint16_t e_type; /* 2 (exec file) */
uint16_t e_machine; /* 3 (intel architecture) */
uint32_t e_version; /* 1 */
uint32_t e_entry; /* starting point */
uint32_t e_phoff; /* program header table offset */
uint32_t e_shoff; /* section header table offset */
uint32_t e_flags; /* various flags */
uint16_t e_ehsize; /* ELF header (this) size */
uint16_t e_phentsize; /* program header table entry size */
uint16_t e_phnum; /* number of entries */
uint16_t e_shentsize; /* section header table entry size */
uint16_t e_shnum; /* number of entries */
uint16_t e_shstrndx; /* index of the section name string table */
};
struct elf_phdr {
uint32_t p_type; /* type of segment */
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 phdr {
elf_phdr h;
uint8_t* data;
};
int elf_check(uint8_t *data); //0 if ok, -1 if not a valid ELF
thread_entry elf_load(uint8_t *data, process* process); //Load an ELF to a process, return entry point
process* elf_exec(uint8_t *data, int privilege, char **args); //Creates a new process and a thread for running ELF file
#endif
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