/* * Copyright (C) 2012 ARM Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #ifndef __ASM_ELF_H #define __ASM_ELF_H #include /* * ELF register definitions.. */ #include #include /* * AArch64 static relocation types. */ /* Miscellaneous. */ #define R_ARM_NONE 0 #define R_AARCH64_NONE 256 /* Data. */ #define R_AARCH64_ABS64 257 #define R_AARCH64_ABS32 258 #define R_AARCH64_ABS16 259 #define R_AARCH64_PREL64 260 #define R_AARCH64_PREL32 261 #define R_AARCH64_PREL16 262 /* Instructions. */ #define R_AARCH64_MOVW_UABS_G0 263 #define R_AARCH64_MOVW_UABS_G0_NC 264 #define R_AARCH64_MOVW_UABS_G1 265 #define R_AARCH64_MOVW_UABS_G1_NC 266 #define R_AARCH64_MOVW_UABS_G2 267 #define R_AARCH64_MOVW_UABS_G2_NC 268 #define R_AARCH64_MOVW_UABS_G3 269 #define R_AARCH64_MOVW_SABS_G0 270 #define R_AARCH64_MOVW_SABS_G1 271 #define R_AARCH64_MOVW_SABS_G2 272 #define R_AARCH64_LD_PREL_LO19 273 #define R_AARCH64_ADR_PREL_LO21 274 #define R_AARCH64_ADR_PREL_PG_HI21 275 #define R_AARCH64_ADR_PREL_PG_HI21_NC 276 #define R_AARCH64_ADD_ABS_LO12_NC 277 #define R_AARCH64_LDST8_ABS_LO12_NC 278 #define R_AARCH64_TSTBR14 279 #define R_AARCH64_CONDBR19 280 #define R_AARCH64_JUMP26 282 #define R_AARCH64_CALL26 283 #define R_AARCH64_LDST16_ABS_LO12_NC 284 #define R_AARCH64_LDST32_ABS_LO12_NC 285 #define R_AARCH64_LDST64_ABS_LO12_NC 286 #define R_AARCH64_LDST128_ABS_LO12_NC 299 #define R_AARCH64_MOVW_PREL_G0 287 #define R_AARCH64_MOVW_PREL_G0_NC 288 #define R_AARCH64_MOVW_PREL_G1 289 #define R_AARCH64_MOVW_PREL_G1_NC 290 #define R_AARCH64_MOVW_PREL_G2 291 #define R_AARCH64_MOVW_PREL_G2_NC 292 #define R_AARCH64_MOVW_PREL_G3 293 #define R_AARCH64_RELATIVE 1027 /* * These are used to set parameters in the core dumps. */ #define ELF_CLASS ELFCLASS64 #ifdef __AARCH64EB__ #define ELF_DATA ELFDATA2MSB #else #define ELF_DATA ELFDATA2LSB #endif #define ELF_ARCH EM_AARCH64 /* * This yields a string that ld.so will use to load implementation * specific libraries for optimization. This is more specific in * intent than poking at uname or /proc/cpuinfo. */ #define ELF_PLATFORM_SIZE 16 #ifdef __AARCH64EB__ #define ELF_PLATFORM ("aarch64_be") #else #define ELF_PLATFORM ("aarch64") #endif /* * This is used to ensure we don't load something for the wrong architecture. */ #define elf_check_arch(x) ((x)->e_machine == EM_AARCH64) #define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X) #define CORE_DUMP_USE_REGSET #define ELF_EXEC_PAGESIZE PAGE_SIZE /* * This is the base location for PIE (ET_DYN with INTERP) loads. On * 64-bit, this is above 4GB to leave the entire 32-bit address * space open for things that want to use the area for 32-bit pointers. */ #define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3) #ifndef __ASSEMBLY__ #include #include /* for signal_minsigstksz, used by ARCH_DLINFO */ typedef unsigned long elf_greg_t; #define ELF_NGREG (sizeof(struct user_pt_regs) / sizeof(elf_greg_t)) #define ELF_CORE_COPY_REGS(dest, regs) \ *(struct user_pt_regs *)&(dest) = (regs)->user_regs; typedef elf_greg_t elf_gregset_t[ELF_NGREG]; typedef struct user_fpsimd_state elf_fpregset_t; /* * When the program starts, a1 contains a pointer to a function to be * registered with atexit, as per the SVR4 ABI. A value of 0 means we have no * such handler. */ #define ELF_PLAT_INIT(_r, load_addr) (_r)->regs[0] = 0 #define SET_PERSONALITY(ex) \ ({ \ clear_thread_flag(TIF_32BIT); \ current->personality &= ~READ_IMPLIES_EXEC; \ }) /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ #define ARCH_DLINFO \ do { \ NEW_AUX_ENT(AT_SYSINFO_EHDR, \ (elf_addr_t)current->mm->context.vdso); \ \ /* \ * Should always be nonzero unless there's a kernel bug. \ * If we haven't determined a sensible value to give to \ * userspace, omit the entry: \ */ \ if (likely(signal_minsigstksz)) \ NEW_AUX_ENT(AT_MINSIGSTKSZ, signal_minsigstksz); \ else \ NEW_AUX_ENT(AT_IGNORE, 0); \ } while (0) #define ARCH_HAS_SETUP_ADDITIONAL_PAGES struct linux_binprm; extern int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp); /* 1GB of VA */ #ifdef CONFIG_COMPAT #define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \ 0x7ff >> (PAGE_SHIFT - 12) : \ 0x3ffff >> (PAGE_SHIFT - 12)) #else #define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12)) #endif #ifdef __AARCH64EB__ #define COMPAT_ELF_PLATFORM ("v8b") #else #define COMPAT_ELF_PLATFORM ("v8l") #endif #ifdef CONFIG_COMPAT /* PIE load location for compat arm. Must match ARM ELF_ET_DYN_BASE. */ #define COMPAT_ELF_ET_DYN_BASE 0x000400000UL /* AArch32 registers. */ #define COMPAT_ELF_NGREG 18 typedef unsigned int compat_elf_greg_t; typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; /* AArch32 EABI. */ #define EF_ARM_EABI_MASK 0xff000000 #define compat_elf_check_arch(x) (system_supports_32bit_el0() && \ ((x)->e_machine == EM_ARM) && \ ((x)->e_flags & EF_ARM_EABI_MASK)) #define compat_start_thread compat_start_thread /* * Unlike the native SET_PERSONALITY macro, the compat version maintains * READ_IMPLIES_EXEC across an execve() since this is the behaviour on * arch/arm/. */ #define COMPAT_SET_PERSONALITY(ex) \ ({ \ set_thread_flag(TIF_32BIT); \ }) #define COMPAT_ARCH_DLINFO extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, int uses_interp); #define compat_arch_setup_additional_pages \ aarch32_setup_vectors_page #endif /* CONFIG_COMPAT */ #endif /* !__ASSEMBLY__ */ #endif