1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef __ASMARM_ELF_H 3#define __ASMARM_ELF_H 4 5#include <asm/auxvec.h> 6#include <asm/hwcap.h> 7#include <asm/vdso_datapage.h> 8 9/* 10 * ELF register definitions.. 11 */ 12#include <asm/ptrace.h> 13#include <asm/user.h> 14 15struct task_struct; 16 17typedef unsigned long elf_greg_t; 18typedef unsigned long elf_freg_t[3]; 19 20#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t)) 21typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 22 23typedef struct user_fp elf_fpregset_t; 24 25#define EF_ARM_EABI_MASK 0xff000000 26#define EF_ARM_EABI_UNKNOWN 0x00000000 27#define EF_ARM_EABI_VER1 0x01000000 28#define EF_ARM_EABI_VER2 0x02000000 29#define EF_ARM_EABI_VER3 0x03000000 30#define EF_ARM_EABI_VER4 0x04000000 31#define EF_ARM_EABI_VER5 0x05000000 32 33#define EF_ARM_BE8 0x00800000 /* ABI 4,5 */ 34#define EF_ARM_LE8 0x00400000 /* ABI 4,5 */ 35#define EF_ARM_MAVERICK_FLOAT 0x00000800 /* ABI 0 */ 36#define EF_ARM_VFP_FLOAT 0x00000400 /* ABI 0 */ 37#define EF_ARM_SOFT_FLOAT 0x00000200 /* ABI 0 */ 38#define EF_ARM_OLD_ABI 0x00000100 /* ABI 0 */ 39#define EF_ARM_NEW_ABI 0x00000080 /* ABI 0 */ 40#define EF_ARM_ALIGN8 0x00000040 /* ABI 0 */ 41#define EF_ARM_PIC 0x00000020 /* ABI 0 */ 42#define EF_ARM_MAPSYMSFIRST 0x00000010 /* ABI 2 */ 43#define EF_ARM_APCS_FLOAT 0x00000010 /* ABI 0, floats in fp regs */ 44#define EF_ARM_DYNSYMSUSESEGIDX 0x00000008 /* ABI 2 */ 45#define EF_ARM_APCS_26 0x00000008 /* ABI 0 */ 46#define EF_ARM_SYMSARESORTED 0x00000004 /* ABI 1,2 */ 47#define EF_ARM_INTERWORK 0x00000004 /* ABI 0 */ 48#define EF_ARM_HASENTRY 0x00000002 /* All */ 49#define EF_ARM_RELEXEC 0x00000001 /* All */ 50 51#define R_ARM_NONE 0 52#define R_ARM_PC24 1 53#define R_ARM_ABS32 2 54#define R_ARM_REL32 3 55#define R_ARM_CALL 28 56#define R_ARM_JUMP24 29 57#define R_ARM_TARGET1 38 58#define R_ARM_V4BX 40 59#define R_ARM_PREL31 42 60#define R_ARM_MOVW_ABS_NC 43 61#define R_ARM_MOVT_ABS 44 62#define R_ARM_MOVW_PREL_NC 45 63#define R_ARM_MOVT_PREL 46 64#define R_ARM_ALU_PC_G0_NC 57 65#define R_ARM_ALU_PC_G1_NC 59 66#define R_ARM_LDR_PC_G2 63 67 68#define R_ARM_THM_CALL 10 69#define R_ARM_THM_JUMP24 30 70#define R_ARM_THM_MOVW_ABS_NC 47 71#define R_ARM_THM_MOVT_ABS 48 72#define R_ARM_THM_MOVW_PREL_NC 49 73#define R_ARM_THM_MOVT_PREL 50 74 75/* 76 * These are used to set parameters in the core dumps. 77 */ 78#define ELF_CLASS ELFCLASS32 79#ifdef __ARMEB__ 80#define ELF_DATA ELFDATA2MSB 81#else 82#define ELF_DATA ELFDATA2LSB 83#endif 84#define ELF_ARCH EM_ARM 85 86/* 87 * This yields a string that ld.so will use to load implementation 88 * specific libraries for optimization. This is more specific in 89 * intent than poking at uname or /proc/cpuinfo. 90 * 91 * For now we just provide a fairly general string that describes the 92 * processor family. This could be made more specific later if someone 93 * implemented optimisations that require it. 26-bit CPUs give you 94 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't 95 * supported). 32-bit CPUs give you "v3[lb]" for anything based on an 96 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1 97 * core. 98 */ 99#define ELF_PLATFORM_SIZE 8 100#define ELF_PLATFORM (elf_platform) 101 102extern char elf_platform[]; 103 104struct elf32_hdr; 105 106/* 107 * This is used to ensure we don't load something for the wrong architecture. 108 */ 109extern int elf_check_arch(const struct elf32_hdr *); 110#define elf_check_arch elf_check_arch 111 112#define ELFOSABI_ARM_FDPIC 65 /* ARM FDPIC platform */ 113#define elf_check_fdpic(x) ((x)->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC) 114#define elf_check_const_displacement(x) ((x)->e_flags & EF_ARM_PIC) 115#define ELF_FDPIC_CORE_EFLAGS 0 116 117#define vmcore_elf64_check_arch(x) (0) 118 119extern int arm_elf_read_implies_exec(int); 120#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(stk) 121 122#define CORE_DUMP_USE_REGSET 123#define ELF_EXEC_PAGESIZE 4096 124 125/* This is the base location for PIE (ET_DYN with INTERP) loads. */ 126#define ELF_ET_DYN_BASE 0x400000UL 127 128/* When the program starts, a1 contains a pointer to a function to be 129 registered with atexit, as per the SVR4 ABI. A value of 0 means we 130 have no such handler. */ 131#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0 132 133#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \ 134 do { \ 135 (_r)->ARM_r7 = _exec_map_addr; \ 136 (_r)->ARM_r8 = _interp_map_addr; \ 137 (_r)->ARM_r9 = dynamic_addr; \ 138 } while(0) 139 140extern void elf_set_personality(const struct elf32_hdr *); 141#define SET_PERSONALITY(ex) elf_set_personality(&(ex)) 142 143#ifdef CONFIG_MMU 144#ifdef CONFIG_VDSO 145#define ARCH_DLINFO \ 146do { \ 147 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 148 (elf_addr_t)current->mm->context.vdso); \ 149} while (0) 150#endif 151#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 152struct linux_binprm; 153int arch_setup_additional_pages(struct linux_binprm *, int); 154#endif 155 156#endif 157