[mirror_ubuntu-zesty-kernel.git] / include / asm-x86 / elf.h

#ifndef _ASM_X86_ELF_H
#define _ASM_X86_ELF_H

/*
 * ELF register definitions..
 */

#include <asm/ptrace.h>
#include <asm/user.h>
#include <asm/auxvec.h>

typedef unsigned long elf_greg_t;

#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef struct user_i387_struct elf_fpregset_t;

#ifdef __i386__

typedef struct user_fxsr_struct elf_fpxregset_t;

#define R_386_NONE	0
#define R_386_32	1
#define R_386_PC32	2
#define R_386_GOT32	3
#define R_386_PLT32	4
#define R_386_COPY	5
#define R_386_GLOB_DAT	6
#define R_386_JMP_SLOT	7
#define R_386_RELATIVE	8
#define R_386_GOTOFF	9
#define R_386_GOTPC	10
#define R_386_NUM	11

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32
#define ELF_DATA	ELFDATA2LSB
#define ELF_ARCH	EM_386

#else

/* x86-64 relocation types */
#define R_X86_64_NONE		0	/* No reloc */
#define R_X86_64_64		1	/* Direct 64 bit  */
#define R_X86_64_PC32		2	/* PC relative 32 bit signed */
#define R_X86_64_GOT32		3	/* 32 bit GOT entry */
#define R_X86_64_PLT32		4	/* 32 bit PLT address */
#define R_X86_64_COPY		5	/* Copy symbol at runtime */
#define R_X86_64_GLOB_DAT	6	/* Create GOT entry */
#define R_X86_64_JUMP_SLOT	7	/* Create PLT entry */
#define R_X86_64_RELATIVE	8	/* Adjust by program base */
#define R_X86_64_GOTPCREL	9	/* 32 bit signed pc relative
					   offset to GOT */
#define R_X86_64_32		10	/* Direct 32 bit zero extended */
#define R_X86_64_32S		11	/* Direct 32 bit sign extended */
#define R_X86_64_16		12	/* Direct 16 bit zero extended */
#define R_X86_64_PC16		13	/* 16 bit sign extended pc relative */
#define R_X86_64_8		14	/* Direct 8 bit sign extended  */
#define R_X86_64_PC8		15	/* 8 bit sign extended pc relative */

#define R_X86_64_NUM		16

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS64
#define ELF_DATA	ELFDATA2LSB
#define ELF_ARCH	EM_X86_64

#endif

#ifdef __KERNEL__

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch_ia32(x) \
	(((x)->e_machine == EM_386) || ((x)->e_machine == EM_486))

#ifdef CONFIG_X86_32
#include <asm/processor.h>
#include <asm/system.h>		/* for savesegment */
#include <asm/desc.h>
#include <asm/vdso.h>

#define elf_check_arch(x)	elf_check_arch_ia32(x)

/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
   contains a pointer to a function which might be registered using `atexit'.
   This provides a mean for the dynamic linker to call DT_FINI functions for
   shared libraries that have been loaded before the code runs.

   A value of 0 tells we have no such handler.

   We might as well make sure everything else is cleared too (except for %esp),
   just to make things more deterministic.
 */
#define ELF_PLAT_INIT(_r, load_addr)	do { \
	_r->bx = 0; _r->cx = 0; _r->dx = 0; \
	_r->si = 0; _r->di = 0; _r->bp = 0; \
	_r->ax = 0; \
} while (0)

#define ELF_PLATFORM	(utsname()->machine)
#define set_personality_64bit()	do { } while (0)
extern unsigned int vdso_enabled;

#else /* CONFIG_X86_32 */

#include <asm/processor.h>

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(x) \
	((x)->e_machine == EM_X86_64)

#define ELF_PLAT_INIT(_r, load_addr)	do {		  \
	struct task_struct *cur = current;		  \
	(_r)->bx = 0; (_r)->cx = 0; (_r)->dx = 0;	  \
	(_r)->si = 0; (_r)->di = 0; (_r)->bp = 0;	  \
	(_r)->ax = 0;					  \
	(_r)->r8 = 0;					  \
	(_r)->r9 = 0;					  \
	(_r)->r10 = 0;					  \
	(_r)->r11 = 0;					  \
	(_r)->r12 = 0;					  \
	(_r)->r13 = 0;					  \
	(_r)->r14 = 0;					  \
	(_r)->r15 = 0;					  \
	cur->thread.fs = 0; cur->thread.gs = 0;		  \
	cur->thread.fsindex = 0; cur->thread.gsindex = 0; \
	cur->thread.ds = 0; cur->thread.es = 0;		  \
	clear_thread_flag(TIF_IA32);			  \
} while (0)

/* I'm not sure if we can use '-' here */
#define ELF_PLATFORM       ("x86_64")
extern void set_personality_64bit(void);
extern int vdso_enabled;

#endif /* !CONFIG_X86_32 */

#define CORE_DUMP_USE_REGSET
#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE	4096

/* 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		(TASK_SIZE / 3 * 2)

/* This yields a mask that user programs can use to figure out what
   instruction set this CPU supports.  This could be done in user space,
   but it's not easy, and we've already done it here.  */

#define ELF_HWCAP		(boot_cpu_data.x86_capability[0])

/* 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.

   For the moment, we have only optimizations for the Intel generations,
   but that could change... */

#define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()

/*
 * An executable for which elf_read_implies_exec() returns TRUE will
 * have the READ_IMPLIES_EXEC personality flag set automatically.
 */
#define elf_read_implies_exec(ex, executable_stack)	\
	(executable_stack != EXSTACK_DISABLE_X)

struct task_struct;

#ifdef CONFIG_X86_32

#define VDSO_HIGH_BASE		(__fix_to_virt(FIX_VDSO))

/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */

#define ARCH_DLINFO \
do if (vdso_enabled) {							\
		NEW_AUX_ENT(AT_SYSINFO,	VDSO_ENTRY);			\
		NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);	\
} while (0)

#else /* CONFIG_X86_32 */

#define VDSO_HIGH_BASE		0xffffe000U /* CONFIG_COMPAT_VDSO address */

/* 1GB for 64bit, 8MB for 32bit */
#define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)

#define ARCH_DLINFO						\
do if (vdso_enabled) {						\
	NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\
} while (0)

#endif /* !CONFIG_X86_32 */

#define VDSO_CURRENT_BASE	((unsigned long)current->mm->context.vdso)

#define VDSO_ENTRY \
	((unsigned long) VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))

struct linux_binprm;

#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
				       int executable_stack);

extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk

#endif /* __KERNEL__ */

#endif
Commit	Line	Data
2439a791 TG	1	#ifndef _ASM_X86_ELF_H
	2	#define _ASM_X86_ELF_H
	3
	4	/*
	5	* ELF register definitions..
	6	*/
	7
	8	#include <asm/ptrace.h>
	9	#include <asm/user.h>
	10	#include <asm/auxvec.h>
	11
	12	typedef unsigned long elf_greg_t;
	13
	14	#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
	15	typedef elf_greg_t elf_gregset_t[ELF_NGREG];
	16
	17	typedef struct user_i387_struct elf_fpregset_t;
	18
	19	#ifdef __i386__
	20
	21	typedef struct user_fxsr_struct elf_fpxregset_t;
	22
	23	#define R_386_NONE 0
	24	#define R_386_32 1
	25	#define R_386_PC32 2
	26	#define R_386_GOT32 3
	27	#define R_386_PLT32 4
	28	#define R_386_COPY 5
	29	#define R_386_GLOB_DAT 6
	30	#define R_386_JMP_SLOT 7
	31	#define R_386_RELATIVE 8
	32	#define R_386_GOTOFF 9
	33	#define R_386_GOTPC 10
	34	#define R_386_NUM 11
	35
	36	/*
	37	* These are used to set parameters in the core dumps.
	38	*/
	39	#define ELF_CLASS ELFCLASS32
	40	#define ELF_DATA ELFDATA2LSB
	41	#define ELF_ARCH EM_386
	42
96a388de	43	#else
2439a791 TG	44
	45	/* x86-64 relocation types */
	46	#define R_X86_64_NONE 0 /* No reloc */
	47	#define R_X86_64_64 1 /* Direct 64 bit */
	48	#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
	49	#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
	50	#define R_X86_64_PLT32 4 /* 32 bit PLT address */
	51	#define R_X86_64_COPY 5 /* Copy symbol at runtime */
	52	#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
	53	#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
	54	#define R_X86_64_RELATIVE 8 /* Adjust by program base */
	55	#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative
	56	offset to GOT */
	57	#define R_X86_64_32 10 /* Direct 32 bit zero extended */
	58	#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
	59	#define R_X86_64_16 12 /* Direct 16 bit zero extended */
	60	#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
	61	#define R_X86_64_8 14 /* Direct 8 bit sign extended */
	62	#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
	63
	64	#define R_X86_64_NUM 16
	65
	66	/*
	67	* These are used to set parameters in the core dumps.
	68	*/
	69	#define ELF_CLASS ELFCLASS64
	70	#define ELF_DATA ELFDATA2LSB
	71	#define ELF_ARCH EM_X86_64
	72
	73	#endif
	74
	75	#ifdef __KERNEL__
	76
af65d648 RM	77	/*
	78	* This is used to ensure we don't load something for the wrong architecture.
	79	*/
	80	#define elf_check_arch_ia32(x) \
	81	(((x)->e_machine == EM_386) \|\| ((x)->e_machine == EM_486))
	82
2439a791 TG	83	#ifdef CONFIG_X86_32
	84	#include <asm/processor.h>
	85	#include <asm/system.h> /* for savesegment */
	86	#include <asm/desc.h>
6c3652ef	87	#include <asm/vdso.h>
2439a791	88
af65d648	89	#define elf_check_arch(x) elf_check_arch_ia32(x)
2439a791 TG	90
	91	/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
	92	contains a pointer to a function which might be registered using `atexit'.
	93	This provides a mean for the dynamic linker to call DT_FINI functions for
	94	shared libraries that have been loaded before the code runs.
	95
	96	A value of 0 tells we have no such handler.
	97
	98	We might as well make sure everything else is cleared too (except for %esp),
	99	just to make things more deterministic.
	100	*/
	101	#define ELF_PLAT_INIT(_r, load_addr) do { \
65ea5b03 PA	102	_r->bx = 0; _r->cx = 0; _r->dx = 0; \
	103	_r->si = 0; _r->di = 0; _r->bp = 0; \
	104	_r->ax = 0; \
2439a791 TG	105	} while (0)
2439a791 TG	106
2439a791 TG	107	#define ELF_PLATFORM (utsname()->machine)
	108	#define set_personality_64bit() do { } while (0)
	109	extern unsigned int vdso_enabled;
	110
	111	#else /* CONFIG_X86_32 */
	112
	113	#include <asm/processor.h>
	114
	115	/*
	116	* This is used to ensure we don't load something for the wrong architecture.
	117	*/
	118	#define elf_check_arch(x) \
	119	((x)->e_machine == EM_X86_64)
	120
	121	#define ELF_PLAT_INIT(_r, load_addr) do { \
	122	struct task_struct *cur = current; \
65ea5b03 PA	123	(_r)->bx = 0; (_r)->cx = 0; (_r)->dx = 0; \
	124	(_r)->si = 0; (_r)->di = 0; (_r)->bp = 0; \
	125	(_r)->ax = 0; \
2439a791 TG	126	(_r)->r8 = 0; \
	127	(_r)->r9 = 0; \
	128	(_r)->r10 = 0; \
	129	(_r)->r11 = 0; \
	130	(_r)->r12 = 0; \
	131	(_r)->r13 = 0; \
	132	(_r)->r14 = 0; \
	133	(_r)->r15 = 0; \
	134	cur->thread.fs = 0; cur->thread.gs = 0; \
	135	cur->thread.fsindex = 0; cur->thread.gsindex = 0; \
	136	cur->thread.ds = 0; cur->thread.es = 0; \
	137	clear_thread_flag(TIF_IA32); \
	138	} while (0)
	139
2439a791 TG	140	/* I'm not sure if we can use '-' here */
	141	#define ELF_PLATFORM ("x86_64")
	142	extern void set_personality_64bit(void);
	143	extern int vdso_enabled;
	144
	145	#endif /* !CONFIG_X86_32 */
	146
975511be	147	#define CORE_DUMP_USE_REGSET
2439a791 TG	148	#define USE_ELF_CORE_DUMP
	149	#define ELF_EXEC_PAGESIZE 4096
	150
	151	/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	152	use of this is to invoke "./ld.so someprog" to test out a new version of
	153	the loader. We need to make sure that it is out of the way of the program
	154	that it will "exec", and that there is sufficient room for the brk. */
	155
	156	#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
	157
	158	/* This yields a mask that user programs can use to figure out what
	159	instruction set this CPU supports. This could be done in user space,
	160	but it's not easy, and we've already done it here. */
	161
	162	#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
	163
	164	/* This yields a string that ld.so will use to load implementation
	165	specific libraries for optimization. This is more specific in
	166	intent than poking at uname or /proc/cpuinfo.
	167
	168	For the moment, we have only optimizations for the Intel generations,
	169	but that could change... */
	170
	171	#define SET_PERSONALITY(ex, ibcs2) set_personality_64bit()
	172
	173	/*
	174	* An executable for which elf_read_implies_exec() returns TRUE will
	175	* have the READ_IMPLIES_EXEC personality flag set automatically.
	176	*/
	177	#define elf_read_implies_exec(ex, executable_stack) \
	178	(executable_stack != EXSTACK_DISABLE_X)
	179
	180	struct task_struct;
	181
2439a791	182	#ifdef CONFIG_X86_32
2439a791 TG	183
2439a791 TG	184	#define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
2439a791 TG	185
	186	/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
	187
	188	#define ARCH_DLINFO \
	189	do if (vdso_enabled) { \
	190	NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
	191	NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
	192	} while (0)
	193
	194	#else /* CONFIG_X86_32 */
	195
af65d648 RM	196	#define VDSO_HIGH_BASE 0xffffe000U /* CONFIG_COMPAT_VDSO address */
af65d648 RM	197
2439a791 TG	198	/* 1GB for 64bit, 8MB for 32bit */
	199	#define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
	200
	201	#define ARCH_DLINFO \
	202	do if (vdso_enabled) { \
	203	NEW_AUX_ENT(AT_SYSINFO_EHDR,(unsigned long)current->mm->context.vdso);\
	204	} while (0)
	205
	206	#endif /* !CONFIG_X86_32 */
	207
af65d648 RM	208	#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
	209
	210	#define VDSO_ENTRY \
	211	((unsigned long) VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
	212
2439a791 TG	213	struct linux_binprm;
	214
	215	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	216	extern int arch_setup_additional_pages(struct linux_binprm *bprm,
	217	int executable_stack);
	218
c1d171a0 JK	219	extern unsigned long arch_randomize_brk(struct mm_struct *mm);
	220	#define arch_randomize_brk arch_randomize_brk
	221
2439a791 TG	222	#endif /* __KERNEL__ */
2439a791 TG	223
96a388de	224	#endif