blob: 147284ff1f960167ff6c4f82e481f3aed8309697 [file] [log] [blame]
Vineet Gupta3be80aa2013-01-18 15:12:17 +05301/*
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
27typedef unsigned long elf_greg_t;
28typedef 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
35typedef 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 */
42struct elf32_hdr;
43extern 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