1 /* 2 +----------------------------------------------------------------------+ 3 | Zend JIT | 4 +----------------------------------------------------------------------+ 5 | Copyright (c) The PHP Group | 6 +----------------------------------------------------------------------+ 7 | This source file is subject to version 3.01 of the PHP license, | 8 | that is bundled with this package in the file LICENSE, and is | 9 | available through the world-wide-web at the following url: | 10 | https://www.php.net/license/3_01.txt | 11 | If you did not receive a copy of the PHP license and are unable to | 12 | obtain it through the world-wide-web, please send a note to | 13 | license@php.net so we can mail you a copy immediately. | 14 +----------------------------------------------------------------------+ 15 | Authors: Dmitry Stogov <dmitry@php.net> | 16 | Xinchen Hui <laruence@php.net> | 17 +----------------------------------------------------------------------+ 18 */ 19 20 #ifndef ZEND_ELF 21 #define ZEND_ELF 22 23 #if SIZEOF_SIZE_T == 8 24 # define ELF64 25 #else 26 # undef ELF64 27 #endif 28 29 typedef struct _zend_elf_header { 30 uint8_t emagic[4]; 31 uint8_t eclass; 32 uint8_t eendian; 33 uint8_t eversion; 34 uint8_t eosabi; 35 uint8_t eabiversion; 36 uint8_t epad[7]; 37 uint16_t type; 38 uint16_t machine; 39 uint32_t version; 40 uintptr_t entry; 41 uintptr_t phofs; 42 uintptr_t shofs; 43 uint32_t flags; 44 uint16_t ehsize; 45 uint16_t phentsize; 46 uint16_t phnum; 47 uint16_t shentsize; 48 uint16_t shnum; 49 uint16_t shstridx; 50 } zend_elf_header; 51 52 typedef struct zend_elf_sectheader { 53 uint32_t name; 54 uint32_t type; 55 uintptr_t flags; 56 uintptr_t addr; 57 uintptr_t ofs; 58 uintptr_t size; 59 uint32_t link; 60 uint32_t info; 61 uintptr_t align; 62 uintptr_t entsize; 63 } zend_elf_sectheader; 64 65 #define ELFSECT_IDX_ABS 0xfff1 66 67 enum { 68 ELFSECT_TYPE_PROGBITS = 1, 69 ELFSECT_TYPE_SYMTAB = 2, 70 ELFSECT_TYPE_STRTAB = 3, 71 ELFSECT_TYPE_NOBITS = 8, 72 ELFSECT_TYPE_DYNSYM = 11, 73 }; 74 75 #define ELFSECT_FLAGS_WRITE (1 << 0) 76 #define ELFSECT_FLAGS_ALLOC (1 << 1) 77 #define ELFSECT_FLAGS_EXEC (1 << 2) 78 #define ELFSECT_FLAGS_TLS (1 << 10) 79 80 typedef struct zend_elf_symbol { 81 #ifdef ELF64 82 uint32_t name; 83 uint8_t info; 84 uint8_t other; 85 uint16_t sectidx; 86 uintptr_t value; 87 uint64_t size; 88 #else 89 uint32_t name; 90 uintptr_t value; 91 uint32_t size; 92 uint8_t info; 93 uint8_t other; 94 uint16_t sectidx; 95 #endif 96 } zend_elf_symbol; 97 98 #define ELFSYM_BIND(info) ((info) >> 4) 99 #define ELFSYM_TYPE(info) ((info) & 0xf) 100 #define ELFSYM_INFO(bind, type) (((bind) << 4) | (type)) 101 102 enum { 103 ELFSYM_TYPE_DATA = 2, 104 ELFSYM_TYPE_FUNC = 2, 105 ELFSYM_TYPE_FILE = 4, 106 }; 107 108 enum { 109 ELFSYM_BIND_LOCAL = 0, 110 ELFSYM_BIND_GLOBAL = 1, 111 }; 112 113 void zend_elf_load_symbols(void); 114 115 #endif 116
