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dis-bench / src /php /php-src /ext /opcache /jit /ir /ir_elf.h
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/*
* IR - Lightweight JIT Compilation Framework
* (ELF header definitions)
* Copyright (C) 2022 Zend by Perforce.
* Authors: Dmitry Stogov <dmitry@php.net>
*/
#ifndef IR_ELF
#define IR_ELF
#if defined(IR_TARGET_X64) || defined(IR_TARGET_AARCH64)
# define ELF64
#else
# undef ELF64
#endif
typedef struct _ir_elf_header {
uint8_t emagic[4];
uint8_t eclass;
uint8_t eendian;
uint8_t eversion;
uint8_t eosabi;
uint8_t eabiversion;
uint8_t epad[7];
uint16_t type;
uint16_t machine;
uint32_t version;
uintptr_t entry;
uintptr_t phofs;
uintptr_t shofs;
uint32_t flags;
uint16_t ehsize;
uint16_t phentsize;
uint16_t phnum;
uint16_t shentsize;
uint16_t shnum;
uint16_t shstridx;
} ir_elf_header;
typedef struct ir_elf_sectheader {
uint32_t name;
uint32_t type;
uintptr_t flags;
uintptr_t addr;
uintptr_t ofs;
uintptr_t size;
uint32_t link;
uint32_t info;
uintptr_t align;
uintptr_t entsize;
} ir_elf_sectheader;
#define ELFSECT_IDX_ABS 0xfff1
enum {
ELFSECT_TYPE_PROGBITS = 1,
ELFSECT_TYPE_SYMTAB = 2,
ELFSECT_TYPE_STRTAB = 3,
ELFSECT_TYPE_NOBITS = 8,
ELFSECT_TYPE_DYNSYM = 11,
};
#define ELFSECT_FLAGS_WRITE (1 << 0)
#define ELFSECT_FLAGS_ALLOC (1 << 1)
#define ELFSECT_FLAGS_EXEC (1 << 2)
#define ELFSECT_FLAGS_TLS (1 << 10)
typedef struct ir_elf_symbol {
#ifdef ELF64
uint32_t name;
uint8_t info;
uint8_t other;
uint16_t sectidx;
uintptr_t value;
uint64_t size;
#else
uint32_t name;
uintptr_t value;
uint32_t size;
uint8_t info;
uint8_t other;
uint16_t sectidx;
#endif
} ir_elf_symbol;
#define ELFSYM_BIND(info) ((info) >> 4)
#define ELFSYM_TYPE(info) ((info) & 0xf)
#define ELFSYM_INFO(bind, type) (((bind) << 4) | (type))
enum {
ELFSYM_TYPE_DATA = 2,
ELFSYM_TYPE_FUNC = 2,
ELFSYM_TYPE_FILE = 4,
};
enum {
ELFSYM_BIND_LOCAL = 0,
ELFSYM_BIND_GLOBAL = 1,
};
#endif