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 65#define R_ARM_THM_CALL 10 66#define R_ARM_THM_JUMP24 30 67#define R_ARM_THM_MOVW_ABS_NC 47 68#define R_ARM_THM_MOVT_ABS 48 69#define R_ARM_THM_MOVW_PREL_NC 49 70#define R_ARM_THM_MOVT_PREL 50 71 72/* 73 * These are used to set parameters in the core dumps. 74 */ 75#define ELF_CLASS ELFCLASS32 76#ifdef __ARMEB__ 77#define ELF_DATA ELFDATA2MSB 78#else 79#define ELF_DATA ELFDATA2LSB 80#endif 81#define ELF_ARCH EM_ARM 82 83/* 84 * This yields a string that ld.so will use to load implementation 85 * specific libraries for optimization. This is more specific in 86 * intent than poking at uname or /proc/cpuinfo. 87 * 88 * For now we just provide a fairly general string that describes the 89 * processor family. This could be made more specific later if someone 90 * implemented optimisations that require it. 26-bit CPUs give you 91 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't 92 * supported). 32-bit CPUs give you "v3[lb]" for anything based on an 93 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1 94 * core. 95 */ 96#define ELF_PLATFORM_SIZE 8 97#define ELF_PLATFORM (elf_platform) 98 99extern char elf_platform[]; 100 101struct elf32_hdr; 102 103/* 104 * This is used to ensure we don't load something for the wrong architecture. 105 */ 106extern int elf_check_arch(const struct elf32_hdr *); 107#define elf_check_arch elf_check_arch 108 109#define ELFOSABI_ARM_FDPIC 65 /* ARM FDPIC platform */ 110#define elf_check_fdpic(x) ((x)->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC) 111#define elf_check_const_displacement(x) ((x)->e_flags & EF_ARM_PIC) 112#define ELF_FDPIC_CORE_EFLAGS 0 113 114#define vmcore_elf64_check_arch(x) (0) 115 116extern int arm_elf_read_implies_exec(int); 117#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(stk) 118 119struct task_struct; 120int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs); 121#define ELF_CORE_COPY_TASK_REGS dump_task_regs 122 123#define CORE_DUMP_USE_REGSET 124#define ELF_EXEC_PAGESIZE 4096 125 126/* This is the base location for PIE (ET_DYN with INTERP) loads. */ 127#define ELF_ET_DYN_BASE 0x400000UL 128 129/* When the program starts, a1 contains a pointer to a function to be 130 registered with atexit, as per the SVR4 ABI. A value of 0 means we 131 have no such handler. */ 132#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0 133 134#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \ 135 do { \ 136 (_r)->ARM_r7 = _exec_map_addr; \ 137 (_r)->ARM_r8 = _interp_map_addr; \ 138 (_r)->ARM_r9 = dynamic_addr; \ 139 } while(0) 140 141extern void elf_set_personality(const struct elf32_hdr *); 142#define SET_PERSONALITY(ex) elf_set_personality(&(ex)) 143 144#ifdef CONFIG_MMU 145#ifdef CONFIG_VDSO 146#define ARCH_DLINFO \ 147do { \ 148 NEW_AUX_ENT(AT_SYSINFO_EHDR, \ 149 (elf_addr_t)current->mm->context.vdso); \ 150} while (0) 151#endif 152#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 153struct linux_binprm; 154int arch_setup_additional_pages(struct linux_binprm *, int); 155#endif 156 157#endif 158