1 /* 2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 as 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef __ASM_ARC_ELF_H 10 #define __ASM_ARC_ELF_H 11 12 #include <asm/ptrace.h> 13 14 #define EM_ARCOMPACT 93 15 16 /* Machine specific ELF Hdr flags */ 17 #define EF_ARC_OSABI_MSK 0x00000f00 18 #define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */ 19 #define EF_ARC_OSABI_V2 0x00000200 20 21 /* ARC Relocations (kernel Modules only) */ 22 #define R_ARC_32 0x4 23 #define R_ARC_32_ME 0x1B 24 #define R_ARC_S25H_PCREL 0x10 25 #define R_ARC_S25W_PCREL 0x11 26 27 typedef unsigned long elf_greg_t; 28 typedef unsigned long elf_fpregset_t; 29 30 31 /* core dump regs is in the order pt_regs, callee_regs, stop_pc (for gdb) */ 32 #define ELF_NGREG ((sizeof(struct pt_regs) + sizeof(struct callee_regs) \ 33 + sizeof(unsigned long)) / sizeof(elf_greg_t)) 34 35 typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 36 37 /* 38 * To ensure that 39 * -we don't load something for the wrong architecture. 40 * -The userspace is using the correct syscall ABI 41 */ 42 struct elf32_hdr; 43 extern int elf_check_arch(const struct elf32_hdr *); 44 #define elf_check_arch elf_check_arch 45 46 /* 47 * These are used to set parameters in the core dumps. 48 */ 49 #define ELF_ARCH EM_ARCOMPACT 50 #define ELF_CLASS ELFCLASS32 51 52 #ifdef CONFIG_CPU_BIG_ENDIAN 53 #define ELF_DATA ELFDATA2MSB 54 #else 55 #define ELF_DATA ELFDATA2LSB 56 #endif 57 58 #ifdef __KERNEL__ 59 60 #define CORE_DUMP_USE_REGSET 61 62 #define ELF_EXEC_PAGESIZE PAGE_SIZE 63 64 /* 65 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 66 * use of this is to invoke "./ld.so someprog" to test out a new version of 67 * the loader. We need to make sure that it is out of the way of the program 68 * that it will "exec", and that there is sufficient room for the brk. 69 */ 70 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) 71 72 /* 73 * When the program starts, a1 contains a pointer to a function to be 74 * registered with atexit, as per the SVR4 ABI. A value of 0 means we 75 * have no such handler. 76 */ 77 #define ELF_PLAT_INIT(_r, load_addr) ((_r)->r0 = 0) 78 79 /* 80 * This yields a mask that user programs can use to figure out what 81 * instruction set this cpu supports. 82 */ 83 #define ELF_HWCAP (0) 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 #define ELF_PLATFORM (NULL) 91 92 #define SET_PERSONALITY(ex) \ 93 set_personality(PER_LINUX | (current->personality & (~PER_MASK))) 94 95 #endif /* __KERNEL__ */ 96 97 #endif 98