[mirror_ubuntu-eoan-kernel.git] / arch / arm64 / include / asm / elf.h

/*
 * 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 location that an ET_DYN program is loaded if exec'ed.  Typical
 * use of this is to invoke "./ld.so someprog" to test out a new version of
 * the loader.  We need to make sure that it is out of the way of the program
 * that it will "exec", and that there is sufficient room for the brk.
 */
#define ELF_ET_DYN_BASE	(2 * TASK_SIZE_64 / 3)

#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);					\
})

/* 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

#define COMPAT_ELF_ET_DYN_BASE		(2 * TASK_SIZE_32 / 3)

/* 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
#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
Commit	Line	Data
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
1e48ef7f AB	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
f668cd16 CM	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, &current->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
e47b020a CM	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() && \
643d703d SP	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, &current->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__ */
4a2e034e AB	204
f668cd16	205	#endif