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f668cd16 CM |
1 | /* |
2 | * Copyright (C) 2012 ARM Ltd. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | */ | |
16 | #ifndef __ASM_ELF_H | |
17 | #define __ASM_ELF_H | |
18 | ||
19 | #include <asm/hwcap.h> | |
20 | ||
21 | /* | |
22 | * ELF register definitions.. | |
23 | */ | |
24 | #include <asm/ptrace.h> | |
25 | #include <asm/user.h> | |
26 | ||
f668cd16 CM |
27 | /* |
28 | * AArch64 static relocation types. | |
29 | */ | |
30 | ||
31 | /* Miscellaneous. */ | |
32 | #define R_ARM_NONE 0 | |
33 | #define R_AARCH64_NONE 256 | |
34 | ||
35 | /* Data. */ | |
36 | #define R_AARCH64_ABS64 257 | |
37 | #define R_AARCH64_ABS32 258 | |
38 | #define R_AARCH64_ABS16 259 | |
39 | #define R_AARCH64_PREL64 260 | |
40 | #define R_AARCH64_PREL32 261 | |
41 | #define R_AARCH64_PREL16 262 | |
42 | ||
43 | /* Instructions. */ | |
44 | #define R_AARCH64_MOVW_UABS_G0 263 | |
45 | #define R_AARCH64_MOVW_UABS_G0_NC 264 | |
46 | #define R_AARCH64_MOVW_UABS_G1 265 | |
47 | #define R_AARCH64_MOVW_UABS_G1_NC 266 | |
48 | #define R_AARCH64_MOVW_UABS_G2 267 | |
49 | #define R_AARCH64_MOVW_UABS_G2_NC 268 | |
50 | #define R_AARCH64_MOVW_UABS_G3 269 | |
51 | ||
52 | #define R_AARCH64_MOVW_SABS_G0 270 | |
53 | #define R_AARCH64_MOVW_SABS_G1 271 | |
54 | #define R_AARCH64_MOVW_SABS_G2 272 | |
55 | ||
56 | #define R_AARCH64_LD_PREL_LO19 273 | |
57 | #define R_AARCH64_ADR_PREL_LO21 274 | |
58 | #define R_AARCH64_ADR_PREL_PG_HI21 275 | |
59 | #define R_AARCH64_ADR_PREL_PG_HI21_NC 276 | |
60 | #define R_AARCH64_ADD_ABS_LO12_NC 277 | |
61 | #define R_AARCH64_LDST8_ABS_LO12_NC 278 | |
62 | ||
63 | #define R_AARCH64_TSTBR14 279 | |
64 | #define R_AARCH64_CONDBR19 280 | |
65 | #define R_AARCH64_JUMP26 282 | |
66 | #define R_AARCH64_CALL26 283 | |
67 | #define R_AARCH64_LDST16_ABS_LO12_NC 284 | |
68 | #define R_AARCH64_LDST32_ABS_LO12_NC 285 | |
69 | #define R_AARCH64_LDST64_ABS_LO12_NC 286 | |
70 | #define R_AARCH64_LDST128_ABS_LO12_NC 299 | |
71 | ||
72 | #define R_AARCH64_MOVW_PREL_G0 287 | |
73 | #define R_AARCH64_MOVW_PREL_G0_NC 288 | |
74 | #define R_AARCH64_MOVW_PREL_G1 289 | |
75 | #define R_AARCH64_MOVW_PREL_G1_NC 290 | |
76 | #define R_AARCH64_MOVW_PREL_G2 291 | |
77 | #define R_AARCH64_MOVW_PREL_G2_NC 292 | |
78 | #define R_AARCH64_MOVW_PREL_G3 293 | |
79 | ||
1e48ef7f AB |
80 | #define R_AARCH64_RELATIVE 1027 |
81 | ||
f668cd16 CM |
82 | /* |
83 | * These are used to set parameters in the core dumps. | |
84 | */ | |
85 | #define ELF_CLASS ELFCLASS64 | |
5436b5c8 WD |
86 | #ifdef __AARCH64EB__ |
87 | #define ELF_DATA ELFDATA2MSB | |
88 | #else | |
f668cd16 | 89 | #define ELF_DATA ELFDATA2LSB |
5436b5c8 | 90 | #endif |
f668cd16 CM |
91 | #define ELF_ARCH EM_AARCH64 |
92 | ||
5436b5c8 WD |
93 | /* |
94 | * This yields a string that ld.so will use to load implementation | |
95 | * specific libraries for optimization. This is more specific in | |
96 | * intent than poking at uname or /proc/cpuinfo. | |
97 | */ | |
f668cd16 | 98 | #define ELF_PLATFORM_SIZE 16 |
5436b5c8 WD |
99 | #ifdef __AARCH64EB__ |
100 | #define ELF_PLATFORM ("aarch64_be") | |
101 | #else | |
f668cd16 | 102 | #define ELF_PLATFORM ("aarch64") |
5436b5c8 | 103 | #endif |
f668cd16 CM |
104 | |
105 | /* | |
106 | * This is used to ensure we don't load something for the wrong architecture. | |
107 | */ | |
108 | #define elf_check_arch(x) ((x)->e_machine == EM_AARCH64) | |
109 | ||
110 | #define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X) | |
111 | ||
112 | #define CORE_DUMP_USE_REGSET | |
113 | #define ELF_EXEC_PAGESIZE PAGE_SIZE | |
114 | ||
115 | /* | |
116 | * This is the location that an ET_DYN program is loaded if exec'ed. Typical | |
117 | * use of this is to invoke "./ld.so someprog" to test out a new version of | |
118 | * the loader. We need to make sure that it is out of the way of the program | |
119 | * that it will "exec", and that there is sufficient room for the brk. | |
120 | */ | |
92980405 | 121 | #define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3) |
f668cd16 | 122 | |
4a2e034e AB |
123 | #ifndef __ASSEMBLY__ |
124 | ||
125 | typedef unsigned long elf_greg_t; | |
126 | ||
127 | #define ELF_NGREG (sizeof(struct user_pt_regs) / sizeof(elf_greg_t)) | |
128 | #define ELF_CORE_COPY_REGS(dest, regs) \ | |
129 | *(struct user_pt_regs *)&(dest) = (regs)->user_regs; | |
130 | ||
131 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; | |
132 | typedef struct user_fpsimd_state elf_fpregset_t; | |
133 | ||
f668cd16 CM |
134 | /* |
135 | * When the program starts, a1 contains a pointer to a function to be | |
136 | * registered with atexit, as per the SVR4 ABI. A value of 0 means we have no | |
137 | * such handler. | |
138 | */ | |
139 | #define ELF_PLAT_INIT(_r, load_addr) (_r)->regs[0] = 0 | |
140 | ||
06beb72f PA |
141 | #define SET_PERSONALITY(ex) \ |
142 | ({ \ | |
143 | clear_bit(TIF_32BIT, ¤t->mm->context.flags); \ | |
144 | clear_thread_flag(TIF_32BIT); \ | |
145 | }) | |
f668cd16 | 146 | |
3146bc64 | 147 | /* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */ |
f668cd16 CM |
148 | #define ARCH_DLINFO \ |
149 | do { \ | |
150 | NEW_AUX_ENT(AT_SYSINFO_EHDR, \ | |
151 | (elf_addr_t)current->mm->context.vdso); \ | |
152 | } while (0) | |
153 | ||
154 | #define ARCH_HAS_SETUP_ADDITIONAL_PAGES | |
155 | struct linux_binprm; | |
156 | extern int arch_setup_additional_pages(struct linux_binprm *bprm, | |
157 | int uses_interp); | |
158 | ||
159 | /* 1GB of VA */ | |
160 | #ifdef CONFIG_COMPAT | |
161 | #define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \ | |
162 | 0x7ff >> (PAGE_SHIFT - 12) : \ | |
163 | 0x3ffff >> (PAGE_SHIFT - 12)) | |
164 | #else | |
165 | #define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12)) | |
166 | #endif | |
167 | ||
a795a38e WD |
168 | #ifdef __AARCH64EB__ |
169 | #define COMPAT_ELF_PLATFORM ("v8b") | |
170 | #else | |
f668cd16 | 171 | #define COMPAT_ELF_PLATFORM ("v8l") |
a795a38e | 172 | #endif |
f668cd16 | 173 | |
e47b020a CM |
174 | #ifdef CONFIG_COMPAT |
175 | ||
92980405 | 176 | #define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) |
f668cd16 CM |
177 | |
178 | /* AArch32 registers. */ | |
179 | #define COMPAT_ELF_NGREG 18 | |
180 | typedef unsigned int compat_elf_greg_t; | |
181 | typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; | |
182 | ||
183 | /* AArch32 EABI. */ | |
184 | #define EF_ARM_EABI_MASK 0xff000000 | |
643d703d SP |
185 | #define compat_elf_check_arch(x) (system_supports_32bit_el0() && \ |
186 | ((x)->e_machine == EM_ARM) && \ | |
f668cd16 CM |
187 | ((x)->e_flags & EF_ARM_EABI_MASK)) |
188 | ||
189 | #define compat_start_thread compat_start_thread | |
06beb72f PA |
190 | #define COMPAT_SET_PERSONALITY(ex) \ |
191 | ({ \ | |
192 | set_bit(TIF_32BIT, ¤t->mm->context.flags); \ | |
193 | set_thread_flag(TIF_32BIT); \ | |
194 | }) | |
f668cd16 CM |
195 | #define COMPAT_ARCH_DLINFO |
196 | extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, | |
197 | int uses_interp); | |
198 | #define compat_arch_setup_additional_pages \ | |
199 | aarch32_setup_vectors_page | |
200 | ||
201 | #endif /* CONFIG_COMPAT */ | |
202 | ||
4a2e034e AB |
203 | #endif /* !__ASSEMBLY__ */ |
204 | ||
f668cd16 | 205 | #endif |