Linux kernel mirror (for testing)
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1/*
2 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
3 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
4 * Copyright (C) 2012 Regents of the University of California
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#ifndef _ASM_RISCV_ELF_H
13#define _ASM_RISCV_ELF_H
14
15#include <uapi/asm/elf.h>
16#include <asm/auxvec.h>
17#include <asm/byteorder.h>
18
19/*
20 * These are used to set parameters in the core dumps.
21 */
22#define ELF_ARCH EM_RISCV
23
24#ifdef CONFIG_64BIT
25#define ELF_CLASS ELFCLASS64
26#else
27#define ELF_CLASS ELFCLASS32
28#endif
29
30#if defined(__LITTLE_ENDIAN)
31#define ELF_DATA ELFDATA2LSB
32#elif defined(__BIG_ENDIAN)
33#define ELF_DATA ELFDATA2MSB
34#else
35#error "Unknown endianness"
36#endif
37
38/*
39 * This is used to ensure we don't load something for the wrong architecture.
40 */
41#define elf_check_arch(x) ((x)->e_machine == EM_RISCV)
42
43#define CORE_DUMP_USE_REGSET
44#define ELF_EXEC_PAGESIZE (PAGE_SIZE)
45
46/*
47 * This is the location that an ET_DYN program is loaded if exec'ed. Typical
48 * use of this is to invoke "./ld.so someprog" to test out a new version of
49 * the loader. We need to make sure that it is out of the way of the program
50 * that it will "exec", and that there is sufficient room for the brk.
51 */
52#define ELF_ET_DYN_BASE ((TASK_SIZE / 3) * 2)
53
54/*
55 * This yields a mask that user programs can use to figure out what
56 * instruction set this CPU supports. This could be done in user space,
57 * but it's not easy, and we've already done it here.
58 */
59#define ELF_HWCAP (elf_hwcap)
60extern unsigned long elf_hwcap;
61
62/*
63 * This yields a string that ld.so will use to load implementation
64 * specific libraries for optimization. This is more specific in
65 * intent than poking at uname or /proc/cpuinfo.
66 */
67#define ELF_PLATFORM (NULL)
68
69#define ARCH_DLINFO \
70do { \
71 NEW_AUX_ENT(AT_SYSINFO_EHDR, \
72 (elf_addr_t)current->mm->context.vdso); \
73} while (0)
74
75
76#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
77struct linux_binprm;
78extern int arch_setup_additional_pages(struct linux_binprm *bprm,
79 int uses_interp);
80
81#endif /* _ASM_RISCV_ELF_H */