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1#ifndef __ASMARM_ELF_H
2#define __ASMARM_ELF_H
3
4#include <asm/hwcap.h>
5
6/*
7 * ELF register definitions..
8 */
9#include <asm/ptrace.h>
10#include <asm/user.h>
11
12struct task_struct;
13
14typedef unsigned long elf_greg_t;
15typedef unsigned long elf_freg_t[3];
16
17#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
18typedef elf_greg_t elf_gregset_t[ELF_NGREG];
19
20typedef struct user_fp elf_fpregset_t;
21
22#define EM_ARM 40
23
24#define EF_ARM_EABI_MASK 0xff000000
25#define EF_ARM_EABI_UNKNOWN 0x00000000
26#define EF_ARM_EABI_VER1 0x01000000
27#define EF_ARM_EABI_VER2 0x02000000
28#define EF_ARM_EABI_VER3 0x03000000
29#define EF_ARM_EABI_VER4 0x04000000
30#define EF_ARM_EABI_VER5 0x05000000
31
32#define EF_ARM_BE8 0x00800000 /* ABI 4,5 */
33#define EF_ARM_LE8 0x00400000 /* ABI 4,5 */
34#define EF_ARM_MAVERICK_FLOAT 0x00000800 /* ABI 0 */
35#define EF_ARM_VFP_FLOAT 0x00000400 /* ABI 0 */
36#define EF_ARM_SOFT_FLOAT 0x00000200 /* ABI 0 */
37#define EF_ARM_OLD_ABI 0x00000100 /* ABI 0 */
38#define EF_ARM_NEW_ABI 0x00000080 /* ABI 0 */
39#define EF_ARM_ALIGN8 0x00000040 /* ABI 0 */
40#define EF_ARM_PIC 0x00000020 /* ABI 0 */
41#define EF_ARM_MAPSYMSFIRST 0x00000010 /* ABI 2 */
42#define EF_ARM_APCS_FLOAT 0x00000010 /* ABI 0, floats in fp regs */
43#define EF_ARM_DYNSYMSUSESEGIDX 0x00000008 /* ABI 2 */
44#define EF_ARM_APCS_26 0x00000008 /* ABI 0 */
45#define EF_ARM_SYMSARESORTED 0x00000004 /* ABI 1,2 */
46#define EF_ARM_INTERWORK 0x00000004 /* ABI 0 */
47#define EF_ARM_HASENTRY 0x00000002 /* All */
48#define EF_ARM_RELEXEC 0x00000001 /* All */
49
50#define R_ARM_NONE 0
51#define R_ARM_PC24 1
52#define R_ARM_ABS32 2
53#define R_ARM_CALL 28
54#define R_ARM_JUMP24 29
55#define R_ARM_V4BX 40
56#define R_ARM_PREL31 42
57#define R_ARM_MOVW_ABS_NC 43
58#define R_ARM_MOVT_ABS 44
59
60#define R_ARM_THM_CALL 10
61#define R_ARM_THM_JUMP24 30
62#define R_ARM_THM_MOVW_ABS_NC 47
63#define R_ARM_THM_MOVT_ABS 48
64
65/*
66 * These are used to set parameters in the core dumps.
67 */
68#define ELF_CLASS ELFCLASS32
69#ifdef __ARMEB__
70#define ELF_DATA ELFDATA2MSB
71#else
72#define ELF_DATA ELFDATA2LSB
73#endif
74#define ELF_ARCH EM_ARM
75
76/*
77 * This yields a string that ld.so will use to load implementation
78 * specific libraries for optimization. This is more specific in
79 * intent than poking at uname or /proc/cpuinfo.
80 *
81 * For now we just provide a fairly general string that describes the
82 * processor family. This could be made more specific later if someone
83 * implemented optimisations that require it. 26-bit CPUs give you
84 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
85 * supported). 32-bit CPUs give you "v3[lb]" for anything based on an
86 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
87 * core.
88 */
89#define ELF_PLATFORM_SIZE 8
90#define ELF_PLATFORM (elf_platform)
91
92extern char elf_platform[];
93
94struct elf32_hdr;
95
96/*
97 * This is used to ensure we don't load something for the wrong architecture.
98 */
99extern int elf_check_arch(const struct elf32_hdr *);
100#define elf_check_arch elf_check_arch
101
102#define vmcore_elf64_check_arch(x) (0)
103
104extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
105#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
106
107struct task_struct;
108int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
109#define ELF_CORE_COPY_TASK_REGS dump_task_regs
110
111#define CORE_DUMP_USE_REGSET
112#define ELF_EXEC_PAGESIZE 4096
113
114/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
115 use of this is to invoke "./ld.so someprog" to test out a new version of
116 the loader. We need to make sure that it is out of the way of the program
117 that it will "exec", and that there is sufficient room for the brk. */
118
119#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
120
121/* When the program starts, a1 contains a pointer to a function to be
122 registered with atexit, as per the SVR4 ABI. A value of 0 means we
123 have no such handler. */
124#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
125
126extern void elf_set_personality(const struct elf32_hdr *);
127#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
128
129struct mm_struct;
130extern unsigned long arch_randomize_brk(struct mm_struct *mm);
131#define arch_randomize_brk arch_randomize_brk
132
133#endif
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __ASMARM_ELF_H
3#define __ASMARM_ELF_H
4
5#include <asm/auxvec.h>
6#include <asm/hwcap.h>
7
8/*
9 * ELF register definitions..
10 */
11#include <asm/ptrace.h>
12#include <asm/user.h>
13
14struct task_struct;
15
16typedef unsigned long elf_greg_t;
17typedef unsigned long elf_freg_t[3];
18
19#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
20typedef elf_greg_t elf_gregset_t[ELF_NGREG];
21
22typedef struct user_fp elf_fpregset_t;
23
24#define EF_ARM_EABI_MASK 0xff000000
25#define EF_ARM_EABI_UNKNOWN 0x00000000
26#define EF_ARM_EABI_VER1 0x01000000
27#define EF_ARM_EABI_VER2 0x02000000
28#define EF_ARM_EABI_VER3 0x03000000
29#define EF_ARM_EABI_VER4 0x04000000
30#define EF_ARM_EABI_VER5 0x05000000
31
32#define EF_ARM_BE8 0x00800000 /* ABI 4,5 */
33#define EF_ARM_LE8 0x00400000 /* ABI 4,5 */
34#define EF_ARM_MAVERICK_FLOAT 0x00000800 /* ABI 0 */
35#define EF_ARM_VFP_FLOAT 0x00000400 /* ABI 0 */
36#define EF_ARM_SOFT_FLOAT 0x00000200 /* ABI 0 */
37#define EF_ARM_OLD_ABI 0x00000100 /* ABI 0 */
38#define EF_ARM_NEW_ABI 0x00000080 /* ABI 0 */
39#define EF_ARM_ALIGN8 0x00000040 /* ABI 0 */
40#define EF_ARM_PIC 0x00000020 /* ABI 0 */
41#define EF_ARM_MAPSYMSFIRST 0x00000010 /* ABI 2 */
42#define EF_ARM_APCS_FLOAT 0x00000010 /* ABI 0, floats in fp regs */
43#define EF_ARM_DYNSYMSUSESEGIDX 0x00000008 /* ABI 2 */
44#define EF_ARM_APCS_26 0x00000008 /* ABI 0 */
45#define EF_ARM_SYMSARESORTED 0x00000004 /* ABI 1,2 */
46#define EF_ARM_INTERWORK 0x00000004 /* ABI 0 */
47#define EF_ARM_HASENTRY 0x00000002 /* All */
48#define EF_ARM_RELEXEC 0x00000001 /* All */
49
50#define R_ARM_NONE 0
51#define R_ARM_PC24 1
52#define R_ARM_ABS32 2
53#define R_ARM_REL32 3
54#define R_ARM_CALL 28
55#define R_ARM_JUMP24 29
56#define R_ARM_TARGET1 38
57#define R_ARM_V4BX 40
58#define R_ARM_PREL31 42
59#define R_ARM_MOVW_ABS_NC 43
60#define R_ARM_MOVT_ABS 44
61#define R_ARM_MOVW_PREL_NC 45
62#define R_ARM_MOVT_PREL 46
63#define R_ARM_ALU_PC_G0_NC 57
64#define R_ARM_ALU_PC_G1_NC 59
65#define R_ARM_LDR_PC_G2 63
66
67#define R_ARM_THM_CALL 10
68#define R_ARM_THM_JUMP24 30
69#define R_ARM_THM_MOVW_ABS_NC 47
70#define R_ARM_THM_MOVT_ABS 48
71#define R_ARM_THM_MOVW_PREL_NC 49
72#define R_ARM_THM_MOVT_PREL 50
73
74/*
75 * These are used to set parameters in the core dumps.
76 */
77#define ELF_CLASS ELFCLASS32
78#ifdef __ARMEB__
79#define ELF_DATA ELFDATA2MSB
80#else
81#define ELF_DATA ELFDATA2LSB
82#endif
83#define ELF_ARCH EM_ARM
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 * For now we just provide a fairly general string that describes the
91 * processor family. This could be made more specific later if someone
92 * implemented optimisations that require it. 26-bit CPUs give you
93 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
94 * supported). 32-bit CPUs give you "v3[lb]" for anything based on an
95 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
96 * core.
97 */
98#define ELF_PLATFORM_SIZE 8
99#define ELF_PLATFORM (elf_platform)
100
101extern char elf_platform[];
102
103struct elf32_hdr;
104
105/*
106 * This is used to ensure we don't load something for the wrong architecture.
107 */
108extern int elf_check_arch(const struct elf32_hdr *);
109#define elf_check_arch elf_check_arch
110
111#define ELFOSABI_ARM_FDPIC 65 /* ARM FDPIC platform */
112#define elf_check_fdpic(x) ((x)->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC)
113#define elf_check_const_displacement(x) ((x)->e_flags & EF_ARM_PIC)
114#define ELF_FDPIC_CORE_EFLAGS 0
115
116#define vmcore_elf64_check_arch(x) (0)
117
118extern int arm_elf_read_implies_exec(int);
119#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(stk)
120
121#define CORE_DUMP_USE_REGSET
122#define ELF_EXEC_PAGESIZE 4096
123
124/* This is the base location for PIE (ET_DYN with INTERP) loads. */
125#define ELF_ET_DYN_BASE 0x400000UL
126
127/* When the program starts, a1 contains a pointer to a function to be
128 registered with atexit, as per the SVR4 ABI. A value of 0 means we
129 have no such handler. */
130#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
131
132#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \
133 do { \
134 (_r)->ARM_r7 = _exec_map_addr; \
135 (_r)->ARM_r8 = _interp_map_addr; \
136 (_r)->ARM_r9 = dynamic_addr; \
137 } while(0)
138
139extern void elf_set_personality(const struct elf32_hdr *);
140#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
141
142#ifdef CONFIG_MMU
143#ifdef CONFIG_VDSO
144#define ARCH_DLINFO \
145do { \
146 NEW_AUX_ENT(AT_SYSINFO_EHDR, \
147 (elf_addr_t)current->mm->context.vdso); \
148} while (0)
149#endif
150#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
151struct linux_binprm;
152int arch_setup_additional_pages(struct linux_binprm *, int);
153#endif
154
155#endif