summaryrefslogtreecommitdiffstats
path: root/arch/arm64/include/asm/elf.h
blob: acae781f7359ece14f713e74e168deb6e47dd68b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
/*
 * Copyright (C) 2012 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef __ASM_ELF_H
#define __ASM_ELF_H

#include <asm/hwcap.h>

/*
 * ELF register definitions..
 */
#include <asm/ptrace.h>
#include <asm/user.h>

/*
 * AArch64 static relocation types.
 */

/* Miscellaneous. */
#define R_ARM_NONE			0
#define R_AARCH64_NONE			256

/* Data. */
#define R_AARCH64_ABS64			257
#define R_AARCH64_ABS32			258
#define R_AARCH64_ABS16			259
#define R_AARCH64_PREL64		260
#define R_AARCH64_PREL32		261
#define R_AARCH64_PREL16		262

/* Instructions. */
#define R_AARCH64_MOVW_UABS_G0		263
#define R_AARCH64_MOVW_UABS_G0_NC	264
#define R_AARCH64_MOVW_UABS_G1		265
#define R_AARCH64_MOVW_UABS_G1_NC	266
#define R_AARCH64_MOVW_UABS_G2		267
#define R_AARCH64_MOVW_UABS_G2_NC	268
#define R_AARCH64_MOVW_UABS_G3		269

#define R_AARCH64_MOVW_SABS_G0		270
#define R_AARCH64_MOVW_SABS_G1		271
#define R_AARCH64_MOVW_SABS_G2		272

#define R_AARCH64_LD_PREL_LO19		273
#define R_AARCH64_ADR_PREL_LO21		274
#define R_AARCH64_ADR_PREL_PG_HI21	275
#define R_AARCH64_ADR_PREL_PG_HI21_NC	276
#define R_AARCH64_ADD_ABS_LO12_NC	277
#define R_AARCH64_LDST8_ABS_LO12_NC	278

#define R_AARCH64_TSTBR14		279
#define R_AARCH64_CONDBR19		280
#define R_AARCH64_JUMP26		282
#define R_AARCH64_CALL26		283
#define R_AARCH64_LDST16_ABS_LO12_NC	284
#define R_AARCH64_LDST32_ABS_LO12_NC	285
#define R_AARCH64_LDST64_ABS_LO12_NC	286
#define R_AARCH64_LDST128_ABS_LO12_NC	299

#define R_AARCH64_MOVW_PREL_G0		287
#define R_AARCH64_MOVW_PREL_G0_NC	288
#define R_AARCH64_MOVW_PREL_G1		289
#define R_AARCH64_MOVW_PREL_G1_NC	290
#define R_AARCH64_MOVW_PREL_G2		291
#define R_AARCH64_MOVW_PREL_G2_NC	292
#define R_AARCH64_MOVW_PREL_G3		293

#define R_AARCH64_RELATIVE		1027

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS64
#ifdef __AARCH64EB__
#define ELF_DATA	ELFDATA2MSB
#else
#define ELF_DATA	ELFDATA2LSB
#endif
#define ELF_ARCH	EM_AARCH64

/*
 * This yields a string that ld.so will use to load implementation
 * specific libraries for optimization.  This is more specific in
 * intent than poking at uname or /proc/cpuinfo.
 */
#define ELF_PLATFORM_SIZE	16
#ifdef __AARCH64EB__
#define ELF_PLATFORM		("aarch64_be")
#else
#define ELF_PLATFORM		("aarch64")
#endif

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(x)		((x)->e_machine == EM_AARCH64)

#define elf_read_implies_exec(ex,stk)	(stk != EXSTACK_DISABLE_X)

#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE	PAGE_SIZE

/*
 * This is the base location for PIE (ET_DYN with INTERP) loads. On
 * 64-bit, this is raised to 4GB to leave the entire 32-bit address
 * space open for things that want to use the area for 32-bit pointers.
 */
#define ELF_ET_DYN_BASE		0x100000000UL

#ifndef __ASSEMBLY__

typedef unsigned long elf_greg_t;

#define ELF_NGREG (sizeof(struct user_pt_regs) / sizeof(elf_greg_t))
#define ELF_CORE_COPY_REGS(dest, regs)	\
	*(struct user_pt_regs *)&(dest) = (regs)->user_regs;

typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct user_fpsimd_state elf_fpregset_t;

/*
 * When the program starts, a1 contains a pointer to a function to be
 * registered with atexit, as per the SVR4 ABI.  A value of 0 means we have no
 * such handler.
 */
#define ELF_PLAT_INIT(_r, load_addr)	(_r)->regs[0] = 0

#define SET_PERSONALITY(ex)						\
({									\
	clear_bit(TIF_32BIT, &current->mm->context.flags);		\
	clear_thread_flag(TIF_32BIT);					\
	current->personality &= ~READ_IMPLIES_EXEC;			\
})

/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
#define ARCH_DLINFO							\
do {									\
	NEW_AUX_ENT(AT_SYSINFO_EHDR,					\
		    (elf_addr_t)current->mm->context.vdso);		\
} while (0)

#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
				       int uses_interp);

/* 1GB of VA */
#ifdef CONFIG_COMPAT
#define STACK_RND_MASK			(test_thread_flag(TIF_32BIT) ? \
						0x7ff >> (PAGE_SHIFT - 12) : \
						0x3ffff >> (PAGE_SHIFT - 12))
#else
#define STACK_RND_MASK			(0x3ffff >> (PAGE_SHIFT - 12))
#endif

#ifdef __AARCH64EB__
#define COMPAT_ELF_PLATFORM		("v8b")
#else
#define COMPAT_ELF_PLATFORM		("v8l")
#endif

#ifdef CONFIG_COMPAT

/* PIE load location for compat arm. Must match ARM ELF_ET_DYN_BASE. */
#define COMPAT_ELF_ET_DYN_BASE		0x000400000UL

/* AArch32 registers. */
#define COMPAT_ELF_NGREG		18
typedef unsigned int			compat_elf_greg_t;
typedef compat_elf_greg_t		compat_elf_gregset_t[COMPAT_ELF_NGREG];

/* AArch32 EABI. */
#define EF_ARM_EABI_MASK		0xff000000
#define compat_elf_check_arch(x)	(system_supports_32bit_el0() && \
					 ((x)->e_machine == EM_ARM) && \
					 ((x)->e_flags & EF_ARM_EABI_MASK))

#define compat_start_thread		compat_start_thread
/*
 * Unlike the native SET_PERSONALITY macro, the compat version inherits
 * READ_IMPLIES_EXEC across a fork() since this is the behaviour on
 * arch/arm/.
 */
#define COMPAT_SET_PERSONALITY(ex)					\
({									\
	set_bit(TIF_32BIT, &current->mm->context.flags);		\
	set_thread_flag(TIF_32BIT);					\
 })
#define COMPAT_ARCH_DLINFO
extern int aarch32_setup_vectors_page(struct linux_binprm *bprm,
				      int uses_interp);
#define compat_arch_setup_additional_pages \
					aarch32_setup_vectors_page

#endif /* CONFIG_COMPAT */

#endif /* !__ASSEMBLY__ */

#endif