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 /* 37 * AArch64 static relocation types. 38 */ 39 40 /* Miscellaneous. */ 41 #define R_ARM_NONE 0 42 #define R_AARCH64_NONE 256 43 44 /* Data. */ 45 #define R_AARCH64_ABS64 257 46 #define R_AARCH64_ABS32 258 47 #define R_AARCH64_ABS16 259 48 #define R_AARCH64_PREL64 260 49 #define R_AARCH64_PREL32 261 50 #define R_AARCH64_PREL16 262 51 52 /* Instructions. */ 53 #define R_AARCH64_MOVW_UABS_G0 263 54 #define R_AARCH64_MOVW_UABS_G0_NC 264 55 #define R_AARCH64_MOVW_UABS_G1 265 56 #define R_AARCH64_MOVW_UABS_G1_NC 266 57 #define R_AARCH64_MOVW_UABS_G2 267 58 #define R_AARCH64_MOVW_UABS_G2_NC 268 59 #define R_AARCH64_MOVW_UABS_G3 269 60 61 #define R_AARCH64_MOVW_SABS_G0 270 62 #define R_AARCH64_MOVW_SABS_G1 271 63 #define R_AARCH64_MOVW_SABS_G2 272 64 65 #define R_AARCH64_LD_PREL_LO19 273 66 #define R_AARCH64_ADR_PREL_LO21 274 67 #define R_AARCH64_ADR_PREL_PG_HI21 275 68 #define R_AARCH64_ADR_PREL_PG_HI21_NC 276 69 #define R_AARCH64_ADD_ABS_LO12_NC 277 70 #define R_AARCH64_LDST8_ABS_LO12_NC 278 71 72 #define R_AARCH64_TSTBR14 279 73 #define R_AARCH64_CONDBR19 280 74 #define R_AARCH64_JUMP26 282 75 #define R_AARCH64_CALL26 283 76 #define R_AARCH64_LDST16_ABS_LO12_NC 284 77 #define R_AARCH64_LDST32_ABS_LO12_NC 285 78 #define R_AARCH64_LDST64_ABS_LO12_NC 286 79 #define R_AARCH64_LDST128_ABS_LO12_NC 299 80 81 #define R_AARCH64_MOVW_PREL_G0 287 82 #define R_AARCH64_MOVW_PREL_G0_NC 288 83 #define R_AARCH64_MOVW_PREL_G1 289 84 #define R_AARCH64_MOVW_PREL_G1_NC 290 85 #define R_AARCH64_MOVW_PREL_G2 291 86 #define R_AARCH64_MOVW_PREL_G2_NC 292 87 #define R_AARCH64_MOVW_PREL_G3 293 88 89 /* 90 * These are used to set parameters in the core dumps. 91 */ 92 #define ELF_CLASS ELFCLASS64 93 #ifdef __AARCH64EB__ 94 #define ELF_DATA ELFDATA2MSB 95 #else 96 #define ELF_DATA ELFDATA2LSB 97 #endif 98 #define ELF_ARCH EM_AARCH64 99 100 /* 101 * This yields a string that ld.so will use to load implementation 102 * specific libraries for optimization. This is more specific in 103 * intent than poking at uname or /proc/cpuinfo. 104 */ 105 #define ELF_PLATFORM_SIZE 16 106 #ifdef __AARCH64EB__ 107 #define ELF_PLATFORM ("aarch64_be") 108 #else 109 #define ELF_PLATFORM ("aarch64") 110 #endif 111 112 /* 113 * This is used to ensure we don't load something for the wrong architecture. 114 */ 115 #define elf_check_arch(x) ((x)->e_machine == EM_AARCH64) 116 117 #define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X) 118 119 #define CORE_DUMP_USE_REGSET 120 #define ELF_EXEC_PAGESIZE PAGE_SIZE 121 122 /* 123 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 124 * use of this is to invoke "./ld.so someprog" to test out a new version of 125 * the loader. We need to make sure that it is out of the way of the program 126 * that it will "exec", and that there is sufficient room for the brk. 127 */ 128 #define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3) 129 130 /* 131 * When the program starts, a1 contains a pointer to a function to be 132 * registered with atexit, as per the SVR4 ABI. A value of 0 means we have no 133 * such handler. 134 */ 135 #define ELF_PLAT_INIT(_r, load_addr) (_r)->regs[0] = 0 136 137 #define SET_PERSONALITY(ex) clear_thread_flag(TIF_32BIT); 138 139 #define ARCH_DLINFO \ 140 do { \ 141 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 142 (elf_addr_t)current->mm->context.vdso); \ 143 } while (0) 144 145 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 146 struct linux_binprm; 147 extern int arch_setup_additional_pages(struct linux_binprm *bprm, 148 int uses_interp); 149 150 /* 1GB of VA */ 151 #ifdef CONFIG_COMPAT 152 #define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \ 153 0x7ff >> (PAGE_SHIFT - 12) : \ 154 0x3ffff >> (PAGE_SHIFT - 12)) 155 #else 156 #define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12)) 157 #endif 158 159 #ifdef CONFIG_COMPAT 160 161 #ifdef __AARCH64EB__ 162 #define COMPAT_ELF_PLATFORM ("v8b") 163 #else 164 #define COMPAT_ELF_PLATFORM ("v8l") 165 #endif 166 167 #define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) 168 169 /* AArch32 registers. */ 170 #define COMPAT_ELF_NGREG 18 171 typedef unsigned int compat_elf_greg_t; 172 typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; 173 174 /* AArch32 EABI. */ 175 #define EF_ARM_EABI_MASK 0xff000000 176 #define compat_elf_check_arch(x) (((x)->e_machine == EM_ARM) && \ 177 ((x)->e_flags & EF_ARM_EABI_MASK)) 178 179 #define compat_start_thread compat_start_thread 180 #define COMPAT_SET_PERSONALITY(ex) set_thread_flag(TIF_32BIT); 181 #define COMPAT_ARCH_DLINFO 182 extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, 183 int uses_interp); 184 #define compat_arch_setup_additional_pages \ 185 aarch32_setup_vectors_page 186 187 #endif /* CONFIG_COMPAT */ 188 189 #endif 190