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// Copyright (c) 2020 Johannes Stoelp
#pragma once
#include <stdint.h>
/// ----------------
/// Auxiliary Vector
/// ----------------
// NOTE: [x86-64] Either AT_EXECFD or AT_PHDR must be supplied by the Kernel.
#define AT_NULL 0 /* [ignored] Mark end of auxiliary vetcor */
#define AT_IGNORE 1 /* [ignored] */
#define AT_EXECFD 2 /* [val] File descriptor of user program (in case Linux Kernel didn't mapped) */
#define AT_PHDR 3 /* [ptr] Address of Phdr of use program (in case Kernel mapped user program) */
#define AT_PHENT 4 /* [val] Size in bytes of one Phdr entry */
#define AT_PHNUM 5 /* [val] Number of Phread entries */
#define AT_PAGESZ 6 /* [val] System page size */
#define AT_BASE 7 /* [ptr] `base address` interpreter was loaded to */
#define AT_FLAGS 8 /* [val] */
#define AT_ENTRY 9 /* [ptr] Entry point of user program */
#define AT_NOTELF 10 /* [val] >0 if not an ELF file */
#define AT_UID 11 /* [val] Real user id of process */
#define AT_EUID 12 /* [val] Effective user id of process */
#define AT_GID 13 /* [val] Real group id of process */
#define AT_EGID 14 /* [val] Effective user id of process */
#define AT_MAX_CNT 15
typedef struct {
uint64_t tag;
union {
uint64_t val;
void* ptr;
};
} Auxv64Entry;
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