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Diffstat (limited to 'arch/arm64/include/asm/elf.h')
| -rw-r--r-- | arch/arm64/include/asm/elf.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h new file mode 100644 index 000000000..433b9554c --- /dev/null +++ b/arch/arm64/include/asm/elf.h @@ -0,0 +1,222 @@ +/* + * 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 <http://www.gnu.org/licenses/>. + */ +#ifndef __ASM_ELF_H +#define __ASM_ELF_H + +#include <asm/hwcap.h> + +/* + * ELF register definitions.. + */ +#include <asm/ptrace.h> +#include <asm/user.h> + +/* + * 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 <linux/bug.h> +#include <asm/processor.h> /* 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 |