1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2001 David E. O'Brien 5 * Copyright (c) 1996-1997 John D. Polstra. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef _MACHINE_ELF_H_ 33 #define _MACHINE_ELF_H_ 1 34 35 /* 36 * EABI ELF definitions for the StrongARM architecture. 37 * See "ARM ELF", document no. `SWS ESPC 0003 A-08' for details. 38 */ 39 40 #include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 41 42 #define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */ 43 #include <sys/elf_generic.h> 44 45 typedef struct { /* Auxiliary vector entry on initial stack */ 46 int a_type; /* Entry type. */ 47 union { 48 long a_val; /* Integer value. */ 49 void *a_ptr; /* Address. */ 50 void (*a_fcn)(void); /* Function pointer (not used). */ 51 } a_un; 52 } Elf32_Auxinfo; 53 54 __ElfType(Auxinfo); 55 56 #define ELF_ARCH EM_ARM 57 58 #define ELF_MACHINE_OK(x) ((x) == EM_ARM) 59 60 /* 61 * Relocation types. 62 */ 63 64 /* Values for a_type. */ 65 #define AT_NULL 0 /* Terminates the vector. */ 66 #define AT_IGNORE 1 /* Ignored entry. */ 67 #define AT_EXECFD 2 /* File descriptor of program to load. */ 68 #define AT_PHDR 3 /* Program header of program already loaded. */ 69 #define AT_PHENT 4 /* Size of each program header entry. */ 70 #define AT_PHNUM 5 /* Number of program header entries. */ 71 #define AT_PAGESZ 6 /* Page size in bytes. */ 72 #define AT_BASE 7 /* Interpreter's base address. */ 73 #define AT_FLAGS 8 /* Flags (unused). */ 74 #define AT_ENTRY 9 /* Where interpreter should transfer control. */ 75 #define AT_NOTELF 10 /* Program is not ELF ?? */ 76 #define AT_UID 11 /* Real uid. */ 77 #define AT_EUID 12 /* Effective uid. */ 78 #define AT_GID 13 /* Real gid. */ 79 #define AT_EGID 14 /* Effective gid. */ 80 #define AT_EXECPATH 15 /* Path to the executable. */ 81 #define AT_CANARY 16 /* Canary for SSP */ 82 #define AT_CANARYLEN 17 /* Length of the canary. */ 83 #define AT_OSRELDATE 18 /* OSRELDATE. */ 84 #define AT_NCPUS 19 /* Number of CPUs. */ 85 #define AT_PAGESIZES 20 /* Pagesizes. */ 86 #define AT_PAGESIZESLEN 21 /* Number of pagesizes. */ 87 #define AT_TIMEKEEP 22 /* Pointer to timehands. */ 88 #define AT_STACKPROT 23 /* Initial stack protection. */ 89 #define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */ 90 #define AT_HWCAP 25 /* CPU feature flags. */ 91 #define AT_HWCAP2 26 /* CPU feature flags 2. */ 92 93 #define AT_COUNT 27 /* Count of defined aux entry types. */ 94 95 #define R_ARM_COUNT 33 /* Count of defined relocation types. */ 96 97 98 /* Define "machine" characteristics */ 99 #define ELF_TARG_CLASS ELFCLASS32 100 #ifdef __ARMEB__ 101 #define ELF_TARG_DATA ELFDATA2MSB 102 #else 103 #define ELF_TARG_DATA ELFDATA2LSB 104 #endif 105 #define ELF_TARG_MACH EM_ARM 106 #define ELF_TARG_VER 1 107 108 /* Defines specific for arm headers */ 109 #define EF_ARM_EABI_VERSION(x) (((x) & EF_ARM_EABIMASK) >> 24) 110 #define EF_ARM_EABI_VERSION_UNKNOWN 0 111 #define EF_ARM_EABI_FREEBSD_MIN 4 112 113 /* 114 * Magic number for the elf trampoline, chosen wisely to be an immediate 115 * value. 116 */ 117 #define MAGIC_TRAMP_NUMBER 0x5c000003 118 119 #define ET_DYN_LOAD_ADDR 0x12000 120 121 /* Flags passed in AT_HWCAP. */ 122 #define HWCAP_SWP 0x00000001 /* Unsupported, never set. */ 123 #define HWCAP_HALF 0x00000002 /* Always set. */ 124 #define HWCAP_THUMB 0x00000004 125 #define HWCAP_26BIT 0x00000008 /* Unsupported, never set. */ 126 #define HWCAP_FAST_MULT 0x00000010 /* Always set. */ 127 #define HWCAP_FPA 0x00000020 /* Unsupported, never set. */ 128 #define HWCAP_VFP 0x00000040 129 #define HWCAP_EDSP 0x00000080 /* Always set for ARMv6+. */ 130 #define HWCAP_JAVA 0x00000100 /* Unsupported, never set. */ 131 #define HWCAP_IWMMXT 0x00000200 /* Unsupported, never set. */ 132 #define HWCAP_CRUNCH 0x00000400 /* Unsupported, never set. */ 133 #define HWCAP_THUMBEE 0x00000800 134 #define HWCAP_NEON 0x00001000 135 #define HWCAP_VFPv3 0x00002000 136 #define HWCAP_VFPv3D16 0x00004000 137 #define HWCAP_TLS 0x00008000 /* Always set for ARMv6+. */ 138 #define HWCAP_VFPv4 0x00010000 139 #define HWCAP_IDIVA 0x00020000 140 #define HWCAP_IDIVT 0x00040000 141 #define HWCAP_VFPD32 0x00080000 142 #define HWCAP_IDIV (HWCAP_IDIVA | HWCAP_IDIVT) 143 #define HWCAP_LPAE 0x00100000 144 #define HWCAP_EVTSTRM 0x00200000 /* Not implemented yet. */ 145 146 147 /* Flags passed in AT_HWCAP2. */ 148 #define HWCAP2_AES 0x00000001 149 #define HWCAP2_PMULL 0x00000002 150 #define HWCAP2_SHA1 0x00000004 151 #define HWCAP2_SHA2 0x00000008 152 #define HWCAP2_CRC32 0x00000010 153 154 #endif /* !_MACHINE_ELF_H_ */ 155