1 /*- 2 * Copyright (c) 2001 David E. O'Brien 3 * Copyright (c) 1996-1997 John D. Polstra. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_ELF_H_ 31 #define _MACHINE_ELF_H_ 1 32 33 /* 34 * EABI ELF definitions for the PowerPC architecture. 35 * See "PowerPC Embedded Application Binary Interface, 32-Bit Impliementation" 36 * [ppc-eabi-1995-01.pdf] for details. 37 */ 38 39 #include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 40 41 #define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */ 42 #include <sys/elf_generic.h> 43 44 #define ELF_ARCH EM_PPC 45 46 #define ELF_MACHINE_OK(x) ((x) == EM_PPC) 47 48 /* 49 * Auxiliary vector entries for passing information to the interpreter. 50 * 51 * The PowerPC supplement to the SVR4 ABI specification names this "auxv_t", 52 * but POSIX lays claim to all symbols ending with "_t". 53 */ 54 55 typedef struct { /* Auxiliary vector entry on initial stack */ 56 int a_type; /* Entry type. */ 57 union { 58 long a_val; /* Integer value. */ 59 void *a_ptr; /* Address. */ 60 void (*a_fcn)(void); /* Function pointer (not used). */ 61 } a_un; 62 } Elf32_Auxinfo; 63 64 __ElfType(Auxinfo); 65 66 /* Values for a_type. */ 67 #define AT_NULL 0 /* Terminates the vector. */ 68 #define AT_IGNORE 1 /* Ignored entry. */ 69 #define AT_EXECFD 2 /* File descriptor of program to load. */ 70 #define AT_PHDR 3 /* Program header of program already loaded. */ 71 #define AT_PHENT 4 /* Size of each program header entry. */ 72 #define AT_PHNUM 5 /* Number of program header entries. */ 73 #define AT_PAGESZ 6 /* Page size in bytes. */ 74 #define AT_BASE 7 /* Interpreter's base address. */ 75 #define AT_FLAGS 8 /* Flags (unused for PowerPC). */ 76 #define AT_ENTRY 9 /* Where interpreter should transfer control. */ 77 #define AT_DCACHEBSIZE 10 /* Data cache block size for the processor. */ 78 #define AT_ICACHEBSIZE 11 /* Instruction cache block size for the uP. */ 79 #define AT_UCACHEBSIZE 12 /* Cache block size, or `0' if cache not unified. */ 80 81 #define AT_COUNT 13 /* Count of defined aux entry types. */ 82 83 /* Used in John Polstra's testbed stuff. */ 84 #define AT_DEBUG 14 /* Debugging level. */ 85 86 /* 87 * Relocation types. 88 */ 89 90 #define R_PPC_COUNT 37 /* Count of defined relocation types. */ 91 92 /* Count of defined relocation types. */ 93 #define R_PPC_EMB_COUNT (R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1) 94 95 /* Define "machine" characteristics */ 96 #define ELF_TARG_CLASS ELFCLASS32 97 #define ELF_TARG_DATA ELFDATA2MSB 98 #define ELF_TARG_MACH EM_PPC 99 #define ELF_TARG_VER 1 100 101 #endif /* !_MACHINE_ELF_H_ */ 102