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  */
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