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