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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * linux/arch/unicore32/include/asm/elf.h
4 *
5 * Code specific to PKUnity SoC and UniCore ISA
6 *
7 * Copyright (C) 2001-2010 GUAN Xue-tao
8 */
9
10#ifndef __UNICORE_ELF_H__
11#define __UNICORE_ELF_H__
12
13#include <asm/hwcap.h>
14
15/*
16 * ELF register definitions..
17 */
18#include <asm/ptrace.h>
19#include <linux/elf-em.h>
20
21typedef unsigned long elf_greg_t;
22typedef unsigned long elf_freg_t[3];
23
24#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
25typedef elf_greg_t elf_gregset_t[ELF_NGREG];
26
27typedef struct fp_state elf_fpregset_t;
28
29#define R_UNICORE_NONE 0
30#define R_UNICORE_PC24 1
31#define R_UNICORE_ABS32 2
32#define R_UNICORE_CALL 28
33#define R_UNICORE_JUMP24 29
34
35/*
36 * These are used to set parameters in the core dumps.
37 */
38#define ELF_CLASS ELFCLASS32
39#define ELF_DATA ELFDATA2LSB
40#define ELF_ARCH EM_UNICORE
41
42/*
43 * This yields a string that ld.so will use to load implementation
44 * specific libraries for optimization. This is more specific in
45 * intent than poking at uname or /proc/cpuinfo.
46 *
47 */
48#define ELF_PLATFORM_SIZE 8
49#define ELF_PLATFORM (elf_platform)
50
51extern char elf_platform[];
52
53struct elf32_hdr;
54
55/*
56 * This is used to ensure we don't load something for the wrong architecture.
57 */
58extern int elf_check_arch(const struct elf32_hdr *);
59#define elf_check_arch elf_check_arch
60
61struct task_struct;
62int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
63#define ELF_CORE_COPY_TASK_REGS dump_task_regs
64
65#define ELF_EXEC_PAGESIZE 4096
66
67/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
68 use of this is to invoke "./ld.so someprog" to test out a new version of
69 the loader. We need to make sure that it is out of the way of the program
70 that it will "exec", and that there is sufficient room for the brk. */
71
72#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
73
74/* When the program starts, a1 contains a pointer to a function to be
75 registered with atexit, as per the SVR4 ABI. A value of 0 means we
76 have no such handler. */
77#define ELF_PLAT_INIT(_r, load_addr) {(_r)->UCreg_00 = 0; }
78
79extern void elf_set_personality(const struct elf32_hdr *);
80#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
81
82struct mm_struct;
83extern unsigned long arch_randomize_brk(struct mm_struct *mm);
84#define arch_randomize_brk arch_randomize_brk
85
86extern int vectors_user_mapping(void);
87#define arch_setup_additional_pages(bprm, uses_interp) vectors_user_mapping()
88#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
89
90#endif