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_ARC_INUSE
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 */
36struct elf32_hdr;
37extern 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