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 PowerPC architecture. 37 * See "PowerPC Embedded Application Binary Interface, 32-Bit Impliementation" 38 * [ppc-eabi-1995-01.pdf] for details. 39 */ 40 41 #ifndef __ELF_WORD_SIZE 42 #ifdef __powerpc64__ 43 #define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */ 44 #else 45 #define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */ 46 #endif 47 #endif 48 49 #include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 50 #include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */ 51 #include <sys/elf_generic.h> 52 53 #if __ELF_WORD_SIZE == 64 54 #define ELF_ARCH EM_PPC64 55 #define ELF_MACHINE_OK(x) ((x) == EM_PPC64) 56 #else 57 #define ELF_ARCH EM_PPC 58 #define ELF_ARCH32 EM_PPC 59 #define ELF_MACHINE_OK(x) ((x) == EM_PPC) 60 #endif 61 62 /* 63 * Auxiliary vector entries for passing information to the interpreter. 64 * 65 * The PowerPC supplement to the SVR4 ABI specification names this "auxv_t", 66 * but POSIX lays claim to all symbols ending with "_t". 67 */ 68 69 typedef struct { /* Auxiliary vector entry on initial stack */ 70 int a_type; /* Entry type. */ 71 union { 72 #ifdef __powerpc64__ 73 int a_val; /* Integer value */ 74 #else 75 long a_val; /* Integer value. */ 76 void *a_ptr; /* Address. */ 77 void (*a_fcn)(void); /* Function pointer (not used). */ 78 #endif 79 } a_un; 80 } Elf32_Auxinfo; 81 82 typedef struct { /* Auxiliary vector entry on initial stack */ 83 long a_type; /* Entry type. */ 84 union { 85 long a_val; /* Integer value. */ 86 void *a_ptr; /* Address. */ 87 void (*a_fcn)(void); /* Function pointer (not used). */ 88 } a_un; 89 } Elf64_Auxinfo; 90 91 __ElfType(Auxinfo); 92 93 /* Values for a_type. */ 94 #define AT_NULL 0 /* Terminates the vector. */ 95 #define AT_IGNORE 1 /* Ignored entry. */ 96 #define AT_EXECFD 2 /* File descriptor of program to load. */ 97 #define AT_PHDR 3 /* Program header of program already loaded. */ 98 #define AT_PHENT 4 /* Size of each program header entry. */ 99 #define AT_PHNUM 5 /* Number of program header entries. */ 100 #define AT_PAGESZ 6 /* Page size in bytes. */ 101 #define AT_BASE 7 /* Interpreter's base address. */ 102 #define AT_FLAGS 8 /* Flags (unused for PowerPC). */ 103 #define AT_ENTRY 9 /* Where interpreter should transfer control. */ 104 #define AT_DCACHEBSIZE 10 /* Data cache block size for the processor. */ 105 #define AT_ICACHEBSIZE 11 /* Instruction cache block size for the uP. */ 106 #define AT_UCACHEBSIZE 12 /* Cache block size, or `0' if cache not unified. */ 107 #define AT_EXECPATH 13 /* Path to the executable. */ 108 #define AT_CANARY 14 /* Canary for SSP */ 109 #define AT_CANARYLEN 15 /* Length of the canary. */ 110 #define AT_OSRELDATE 16 /* OSRELDATE. */ 111 #define AT_NCPUS 17 /* Number of CPUs. */ 112 #define AT_PAGESIZES 18 /* Pagesizes. */ 113 #define AT_PAGESIZESLEN 19 /* Number of pagesizes. */ 114 #define AT_STACKPROT 21 /* Initial stack protection. */ 115 #define AT_TIMEKEEP 22 /* Pointer to timehands. */ 116 #define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */ 117 #define AT_HWCAP 25 /* CPU feature flags. */ 118 #define AT_HWCAP2 26 /* CPU feature flags 2. */ 119 120 #define AT_COUNT 27 /* Count of defined aux entry types. */ 121 122 /* 123 * Relocation types. 124 */ 125 126 #define R_PPC_COUNT 37 /* Count of defined relocation types. */ 127 128 /* Count of defined relocation types. */ 129 #define R_PPC_EMB_COUNT (R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1) 130 131 /* Define "machine" characteristics */ 132 #if __ELF_WORD_SIZE == 64 133 #define ELF_TARG_CLASS ELFCLASS64 134 #define ELF_TARG_DATA ELFDATA2MSB 135 #define ELF_TARG_MACH EM_PPC64 136 #define ELF_TARG_VER 1 137 #else 138 #define ELF_TARG_CLASS ELFCLASS32 139 #define ELF_TARG_DATA ELFDATA2MSB 140 #define ELF_TARG_MACH EM_PPC 141 #define ELF_TARG_VER 1 142 #endif 143 144 #define ET_DYN_LOAD_ADDR 0x01010000 145 146 #endif /* !_MACHINE_ELF_H_ */ 147