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