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 user_pt_regs) / sizeof(elf_greg_t)) 30 #define ELF_CORE_COPY_REGS(dest, regs) \ 31 *(struct user_pt_regs *)&(dest) = (regs)->user_regs; 32 33 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 34 typedef struct user_fpsimd_state elf_fpregset_t; 35 36 #define EM_AARCH64 183 37 38 /* 39 * AArch64 static relocation types. 40 */ 41 42 /* Miscellaneous. */ 43 #define R_ARM_NONE 0 44 #define R_AARCH64_NONE 256 45 46 /* Data. */ 47 #define R_AARCH64_ABS64 257 48 #define R_AARCH64_ABS32 258 49 #define R_AARCH64_ABS16 259 50 #define R_AARCH64_PREL64 260 51 #define R_AARCH64_PREL32 261 52 #define R_AARCH64_PREL16 262 53 54 /* Instructions. */ 55 #define R_AARCH64_MOVW_UABS_G0 263 56 #define R_AARCH64_MOVW_UABS_G0_NC 264 57 #define R_AARCH64_MOVW_UABS_G1 265 58 #define R_AARCH64_MOVW_UABS_G1_NC 266 59 #define R_AARCH64_MOVW_UABS_G2 267 60 #define R_AARCH64_MOVW_UABS_G2_NC 268 61 #define R_AARCH64_MOVW_UABS_G3 269 62 63 #define R_AARCH64_MOVW_SABS_G0 270 64 #define R_AARCH64_MOVW_SABS_G1 271 65 #define R_AARCH64_MOVW_SABS_G2 272 66 67 #define R_AARCH64_LD_PREL_LO19 273 68 #define R_AARCH64_ADR_PREL_LO21 274 69 #define R_AARCH64_ADR_PREL_PG_HI21 275 70 #define R_AARCH64_ADR_PREL_PG_HI21_NC 276 71 #define R_AARCH64_ADD_ABS_LO12_NC 277 72 #define R_AARCH64_LDST8_ABS_LO12_NC 278 73 74 #define R_AARCH64_TSTBR14 279 75 #define R_AARCH64_CONDBR19 280 76 #define R_AARCH64_JUMP26 282 77 #define R_AARCH64_CALL26 283 78 #define R_AARCH64_LDST16_ABS_LO12_NC 284 79 #define R_AARCH64_LDST32_ABS_LO12_NC 285 80 #define R_AARCH64_LDST64_ABS_LO12_NC 286 81 #define R_AARCH64_LDST128_ABS_LO12_NC 299 82 83 #define R_AARCH64_MOVW_PREL_G0 287 84 #define R_AARCH64_MOVW_PREL_G0_NC 288 85 #define R_AARCH64_MOVW_PREL_G1 289 86 #define R_AARCH64_MOVW_PREL_G1_NC 290 87 #define R_AARCH64_MOVW_PREL_G2 291 88 #define R_AARCH64_MOVW_PREL_G2_NC 292 89 #define R_AARCH64_MOVW_PREL_G3 293 90 91 /* 92 * These are used to set parameters in the core dumps. 93 */ 94 #define ELF_CLASS ELFCLASS64 95 #define ELF_DATA ELFDATA2LSB 96 #define ELF_ARCH EM_AARCH64 97 98 #define ELF_PLATFORM_SIZE 16 99 #define ELF_PLATFORM ("aarch64") 100 101 /* 102 * This is used to ensure we don't load something for the wrong architecture. 103 */ 104 #define elf_check_arch(x) ((x)->e_machine == EM_AARCH64) 105 106 #define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X) 107 108 #define CORE_DUMP_USE_REGSET 109 #define ELF_EXEC_PAGESIZE PAGE_SIZE 110 111 /* 112 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 113 * use of this is to invoke "./ld.so someprog" to test out a new version of 114 * the loader. We need to make sure that it is out of the way of the program 115 * that it will "exec", and that there is sufficient room for the brk. 116 */ 117 extern unsigned long randomize_et_dyn(unsigned long base); 118 #define ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_64 / 3)) 119 120 /* 121 * When the program starts, a1 contains a pointer to a function to be 122 * registered with atexit, as per the SVR4 ABI. A value of 0 means we have no 123 * such handler. 124 */ 125 #define ELF_PLAT_INIT(_r, load_addr) (_r)->regs[0] = 0 126 127 #define SET_PERSONALITY(ex) clear_thread_flag(TIF_32BIT); 128 129 #define ARCH_DLINFO \ 130 do { \ 131 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 132 (elf_addr_t)current->mm->context.vdso); \ 133 } while (0) 134 135 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 136 struct linux_binprm; 137 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 138 int uses_interp); 139 140 /* 1GB of VA */ 141 #ifdef CONFIG_COMPAT 142 #define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \ 143 0x7ff >> (PAGE_SHIFT - 12) : \ 144 0x3ffff >> (PAGE_SHIFT - 12)) 145 #else 146 #define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12)) 147 #endif 148 149 struct mm_struct; 150 extern unsigned long arch_randomize_brk(struct mm_struct *mm); 151 #define arch_randomize_brk arch_randomize_brk 152 153 #ifdef CONFIG_COMPAT 154 #define EM_ARM 40 155 #define COMPAT_ELF_PLATFORM ("v8l") 156 157 #define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) 158 159 /* AArch32 registers. */ 160 #define COMPAT_ELF_NGREG 18 161 typedef unsigned int compat_elf_greg_t; 162 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; 163 164 /* AArch32 EABI. */ 165 #define EF_ARM_EABI_MASK 0xff000000 166 #define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ 167 ((x)->e_flags & EF_ARM_EABI_MASK)) 168 169 #define compat_start_thread compat_start_thread 170 #define COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); 171 #define COMPAT_ARCH_DLINFO 172 extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, 173 int uses_interp); 174 #define compat_arch_setup_additional_pages \ 175 aarch32_setup_vectors_page 176 177 #endif /* CONFIG_COMPAT */ 178 179 #endif 180