1 /* 2 * Copyright (C) 2012 ARM Ltd. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 #ifndef __ASM_ELF_H 17 #define __ASM_ELF_H 18 19 #include <asm/hwcap.h> 20 21 /* 22 * ELF register definitions.. 23 */ 24 #include <asm/ptrace.h> 25 #include <asm/user.h> 26 27 typedef unsigned long elf_greg_t; 28 29 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t)) 30 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 31 typedef struct user_fpsimd_state elf_fpregset_t; 32 33 #define EM_AARCH64 183 34 35 /* 36 * AArch64 static relocation types. 37 */ 38 39 /* Miscellaneous. */ 40 #define R_ARM_NONE 0 41 #define R_AARCH64_NONE 256 42 43 /* Data. */ 44 #define R_AARCH64_ABS64 257 45 #define R_AARCH64_ABS32 258 46 #define R_AARCH64_ABS16 259 47 #define R_AARCH64_PREL64 260 48 #define R_AARCH64_PREL32 261 49 #define R_AARCH64_PREL16 262 50 51 /* Instructions. */ 52 #define R_AARCH64_MOVW_UABS_G0 263 53 #define R_AARCH64_MOVW_UABS_G0_NC 264 54 #define R_AARCH64_MOVW_UABS_G1 265 55 #define R_AARCH64_MOVW_UABS_G1_NC 266 56 #define R_AARCH64_MOVW_UABS_G2 267 57 #define R_AARCH64_MOVW_UABS_G2_NC 268 58 #define R_AARCH64_MOVW_UABS_G3 269 59 60 #define R_AARCH64_MOVW_SABS_G0 270 61 #define R_AARCH64_MOVW_SABS_G1 271 62 #define R_AARCH64_MOVW_SABS_G2 272 63 64 #define R_AARCH64_LD_PREL_LO19 273 65 #define R_AARCH64_ADR_PREL_LO21 274 66 #define R_AARCH64_ADR_PREL_PG_HI21 275 67 #define R_AARCH64_ADR_PREL_PG_HI21_NC 276 68 #define R_AARCH64_ADD_ABS_LO12_NC 277 69 #define R_AARCH64_LDST8_ABS_LO12_NC 278 70 71 #define R_AARCH64_TSTBR14 279 72 #define R_AARCH64_CONDBR19 280 73 #define R_AARCH64_JUMP26 282 74 #define R_AARCH64_CALL26 283 75 #define R_AARCH64_LDST16_ABS_LO12_NC 284 76 #define R_AARCH64_LDST32_ABS_LO12_NC 285 77 #define R_AARCH64_LDST64_ABS_LO12_NC 286 78 #define R_AARCH64_LDST128_ABS_LO12_NC 299 79 80 #define R_AARCH64_MOVW_PREL_G0 287 81 #define R_AARCH64_MOVW_PREL_G0_NC 288 82 #define R_AARCH64_MOVW_PREL_G1 289 83 #define R_AARCH64_MOVW_PREL_G1_NC 290 84 #define R_AARCH64_MOVW_PREL_G2 291 85 #define R_AARCH64_MOVW_PREL_G2_NC 292 86 #define R_AARCH64_MOVW_PREL_G3 293 87 88 /* 89 * These are used to set parameters in the core dumps. 90 */ 91 #define ELF_CLASS ELFCLASS64 92 #define ELF_DATA ELFDATA2LSB 93 #define ELF_ARCH EM_AARCH64 94 95 #define ELF_PLATFORM_SIZE 16 96 #define ELF_PLATFORM ("aarch64") 97 98 /* 99 * This is used to ensure we don't load something for the wrong architecture. 100 */ 101 #define elf_check_arch(x) ((x)->e_machine == EM_AARCH64) 102 103 #define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X) 104 105 #define CORE_DUMP_USE_REGSET 106 #define ELF_EXEC_PAGESIZE PAGE_SIZE 107 108 /* 109 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 110 * use of this is to invoke "./ld.so someprog" to test out a new version of 111 * the loader. We need to make sure that it is out of the way of the program 112 * that it will "exec", and that there is sufficient room for the brk. 113 */ 114 extern unsigned long randomize_et_dyn(unsigned long base); 115 #define ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_64 / 3)) 116 117 /* 118 * When the program starts, a1 contains a pointer to a function to be 119 * registered with atexit, as per the SVR4 ABI. A value of 0 means we have no 120 * such handler. 121 */ 122 #define ELF_PLAT_INIT(_r, load_addr) (_r)->regs[0] = 0 123 124 #define SET_PERSONALITY(ex) clear_thread_flag(TIF_32BIT); 125 126 #define ARCH_DLINFO \ 127 do { \ 128 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 129 (elf_addr_t)current->mm->context.vdso); \ 130 } while (0) 131 132 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 133 struct linux_binprm; 134 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 135 int uses_interp); 136 137 /* 1GB of VA */ 138 #ifdef CONFIG_COMPAT 139 #define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \ 140 0x7ff >> (PAGE_SHIFT - 12) : \ 141 0x3ffff >> (PAGE_SHIFT - 12)) 142 #else 143 #define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12)) 144 #endif 145 146 struct mm_struct; 147 extern unsigned long arch_randomize_brk(struct mm_struct *mm); 148 #define arch_randomize_brk arch_randomize_brk 149 150 #ifdef CONFIG_COMPAT 151 #define EM_ARM 40 152 #define COMPAT_ELF_PLATFORM ("v8l") 153 154 #define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) 155 156 /* AArch32 registers. */ 157 #define COMPAT_ELF_NGREG 18 158 typedef unsigned int compat_elf_greg_t; 159 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; 160 161 /* AArch32 EABI. */ 162 #define EF_ARM_EABI_MASK 0xff000000 163 #define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ 164 ((x)->e_flags & EF_ARM_EABI_MASK)) 165 166 #define compat_start_thread compat_start_thread 167 #define COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); 168 #define COMPAT_ARCH_DLINFO 169 extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, 170 int uses_interp); 171 #define compat_arch_setup_additional_pages \ 172 aarch32_setup_vectors_page 173 174 #endif /* CONFIG_COMPAT */ 175 176 #endif 177