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1#ifndef __ASMARM_ELF_H
2#define __ASMARM_ELF_H
3
4#include <asm/auxvec.h>
5#include <asm/hwcap.h>
6#include <asm/vdso_datapage.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_CALL 28
54#define R_ARM_JUMP24 29
55#define R_ARM_TARGET1 38
56#define R_ARM_V4BX 40
57#define R_ARM_PREL31 42
58#define R_ARM_MOVW_ABS_NC 43
59#define R_ARM_MOVT_ABS 44
60
61#define R_ARM_THM_CALL 10
62#define R_ARM_THM_JUMP24 30
63#define R_ARM_THM_MOVW_ABS_NC 47
64#define R_ARM_THM_MOVT_ABS 48
65
66/*
67 * These are used to set parameters in the core dumps.
68 */
69#define ELF_CLASS ELFCLASS32
70#ifdef __ARMEB__
71#define ELF_DATA ELFDATA2MSB
72#else
73#define ELF_DATA ELFDATA2LSB
74#endif
75#define ELF_ARCH EM_ARM
76
77/*
78 * This yields a string that ld.so will use to load implementation
79 * specific libraries for optimization. This is more specific in
80 * intent than poking at uname or /proc/cpuinfo.
81 *
82 * For now we just provide a fairly general string that describes the
83 * processor family. This could be made more specific later if someone
84 * implemented optimisations that require it. 26-bit CPUs give you
85 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
86 * supported). 32-bit CPUs give you "v3[lb]" for anything based on an
87 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
88 * core.
89 */
90#define ELF_PLATFORM_SIZE 8
91#define ELF_PLATFORM (elf_platform)
92
93extern char elf_platform[];
94
95struct elf32_hdr;
96
97/*
98 * This is used to ensure we don't load something for the wrong architecture.
99 */
100extern int elf_check_arch(const struct elf32_hdr *);
101#define elf_check_arch elf_check_arch
102
103#define vmcore_elf64_check_arch(x) (0)
104
105extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
106#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
107
108struct task_struct;
109int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
110#define ELF_CORE_COPY_TASK_REGS dump_task_regs
111
112#define CORE_DUMP_USE_REGSET
113#define ELF_EXEC_PAGESIZE 4096
114
115/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
116 use of this is to invoke "./ld.so someprog" to test out a new version of
117 the loader. We need to make sure that it is out of the way of the program
118 that it will "exec", and that there is sufficient room for the brk. */
119
120#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
121
122/* When the program starts, a1 contains a pointer to a function to be
123 registered with atexit, as per the SVR4 ABI. A value of 0 means we
124 have no such handler. */
125#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
126
127extern void elf_set_personality(const struct elf32_hdr *);
128#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
129
130#ifdef CONFIG_MMU
131#ifdef CONFIG_VDSO
132#define ARCH_DLINFO \
133do { \
134 NEW_AUX_ENT(AT_SYSINFO_EHDR, \
135 (elf_addr_t)current->mm->context.vdso); \
136} while (0)
137#endif
138#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
139struct linux_binprm;
140int arch_setup_additional_pages(struct linux_binprm *, int);
141#endif
142
143#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