1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) 4 */ 5 6 #ifndef __ASM_ARC_ELF_H 7 #define __ASM_ARC_ELF_H 8 9 #include <linux/types.h> 10 #include <linux/elf-em.h> 11 #include <uapi/asm/elf.h> 12 13 #define EM_ARC_INUSE (IS_ENABLED(CONFIG_ISA_ARCOMPACT) ? \ 14 EM_ARCOMPACT : EM_ARCV2) 15 16 /* ARC Relocations (kernel Modules only) */ 17 #define R_ARC_32 0x4 18 #define R_ARC_32_ME 0x1B 19 #define R_ARC_32_PCREL 0x31 20 21 /*to set parameters in the core dumps */ 22 #define ELF_ARCH EM_ARCOMPACT 23 #define ELF_CLASS ELFCLASS32 24 25 #ifdef CONFIG_CPU_BIG_ENDIAN 26 #define ELF_DATA ELFDATA2MSB 27 #else 28 #define ELF_DATA ELFDATA2LSB 29 #endif 30 31 /* 32 * To ensure that 33 * -we don't load something for the wrong architecture. 34 * -The userspace is using the correct syscall ABI 35 */ 36 struct elf32_hdr; 37 extern int elf_check_arch(const struct elf32_hdr *); 38 #define elf_check_arch elf_check_arch 39 40 #define CORE_DUMP_USE_REGSET 41 42 #define ELF_EXEC_PAGESIZE PAGE_SIZE 43 44 /* 45 * This is the location that an ET_DYN program is loaded if exec'ed. Typical 46 * use of this is to invoke "./ld.so someprog" to test out a new version of 47 * the loader. We need to make sure that it is out of the way of the program 48 * that it will "exec", and that there is sufficient room for the brk. 49 */ 50 #define ELF_ET_DYN_BASE (2UL * TASK_SIZE / 3) 51 52 /* 53 * When the program starts, a1 contains a pointer to a function to be 54 * registered with atexit, as per the SVR4 ABI. A value of 0 means we 55 * have no such handler. 56 */ 57 #define ELF_PLAT_INIT(_r, load_addr) ((_r)->r0 = 0) 58 59 /* 60 * This yields a mask that user programs can use to figure out what 61 * instruction set this cpu supports. 62 */ 63 #define ELF_HWCAP (0) 64 65 /* 66 * This yields a string that ld.so will use to load implementation 67 * specific libraries for optimization. This is more specific in 68 * intent than poking at uname or /proc/cpuinfo. 69 */ 70 #define ELF_PLATFORM (NULL) 71 72 #endif 73