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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
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