[mirror_ubuntu-artful-kernel.git] / arch / x86 / include / asm / 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

#include <asm/vdso.h>

extern unsigned int vdso_enabled;

/*
 * 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))

#include <asm/processor.h>
#include <asm/system.h>

#ifdef CONFIG_X86_32
#include <asm/desc.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)

/*
 * regs is struct pt_regs, pr_reg is elf_gregset_t (which is
 * now struct_user_regs, they are different)
 */

#define ELF_CORE_COPY_REGS_COMMON(pr_reg, regs)	\
do {						\
	pr_reg[0] = regs->bx;			\
	pr_reg[1] = regs->cx;			\
	pr_reg[2] = regs->dx;			\
	pr_reg[3] = regs->si;			\
	pr_reg[4] = regs->di;			\
	pr_reg[5] = regs->bp;			\
	pr_reg[6] = regs->ax;			\
	pr_reg[7] = regs->ds & 0xffff;		\
	pr_reg[8] = regs->es & 0xffff;		\
	pr_reg[9] = regs->fs & 0xffff;		\
	pr_reg[11] = regs->orig_ax;		\
	pr_reg[12] = regs->ip;			\
	pr_reg[13] = regs->cs & 0xffff;		\
	pr_reg[14] = regs->flags;		\
	pr_reg[15] = regs->sp;			\
	pr_reg[16] = regs->ss & 0xffff;		\
} while (0);

#define ELF_CORE_COPY_REGS(pr_reg, regs)	\
do {						\
	ELF_CORE_COPY_REGS_COMMON(pr_reg, regs);\
	pr_reg[10] = get_user_gs(regs);		\
} while (0);

#define ELF_CORE_COPY_KERNEL_REGS(pr_reg, regs)	\
do {						\
	ELF_CORE_COPY_REGS_COMMON(pr_reg, regs);\
	savesegment(gs, pr_reg[10]);		\
} while (0);

#define ELF_PLATFORM	(utsname()->machine)
#define set_personality_64bit()	do { } while (0)

#else /* CONFIG_X86_32 */

/*
 * 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 compat_elf_check_arch(x)	elf_check_arch_ia32(x)

static inline void start_ia32_thread(struct pt_regs *regs, u32 ip, u32 sp)
{
	loadsegment(fs, 0);
	loadsegment(ds, __USER32_DS);
	loadsegment(es, __USER32_DS);
	load_gs_index(0);
	regs->ip = ip;
	regs->sp = sp;
	regs->flags = X86_EFLAGS_IF;
	regs->cs = __USER32_CS;
	regs->ss = __USER32_DS;
}

static inline void elf_common_init(struct thread_struct *t,
				   struct pt_regs *regs, const u16 ds)
{
	regs->ax = regs->bx = regs->cx = regs->dx = 0;
	regs->si = regs->di = regs->bp = 0;
	regs->r8 = regs->r9 = regs->r10 = regs->r11 = 0;
	regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
	t->fs = t->gs = 0;
	t->fsindex = t->gsindex = 0;
	t->ds = t->es = ds;
}

#define ELF_PLAT_INIT(_r, load_addr)			\
do {							\
	elf_common_init(&current->thread, _r, 0);	\
	clear_thread_flag(TIF_IA32);			\
} while (0)

#define	COMPAT_ELF_PLAT_INIT(regs, load_addr)		\
	elf_common_init(&current->thread, regs, __USER_DS)

#define	compat_start_thread(regs, ip, sp)		\
do {							\
	start_ia32_thread(regs, ip, sp);		\
	set_fs(USER_DS);				\
} while (0)

#define COMPAT_SET_PERSONALITY(ex)			\
do {							\
	if (test_thread_flag(TIF_IA32))			\
		clear_thread_flag(TIF_ABI_PENDING);	\
	else						\
		set_thread_flag(TIF_ABI_PENDING);	\
	current->personality |= force_personality32;	\
} while (0)

#define COMPAT_ELF_PLATFORM			("i686")

/*
 * regs is struct pt_regs, pr_reg is elf_gregset_t (which is
 * now struct_user_regs, they are different). Assumes current is the process
 * getting dumped.
 */

#define ELF_CORE_COPY_REGS(pr_reg, regs)			\
do {								\
	unsigned v;						\
	(pr_reg)[0] = (regs)->r15;				\
	(pr_reg)[1] = (regs)->r14;				\
	(pr_reg)[2] = (regs)->r13;				\
	(pr_reg)[3] = (regs)->r12;				\
	(pr_reg)[4] = (regs)->bp;				\
	(pr_reg)[5] = (regs)->bx;				\
	(pr_reg)[6] = (regs)->r11;				\
	(pr_reg)[7] = (regs)->r10;				\
	(pr_reg)[8] = (regs)->r9;				\
	(pr_reg)[9] = (regs)->r8;				\
	(pr_reg)[10] = (regs)->ax;				\
	(pr_reg)[11] = (regs)->cx;				\
	(pr_reg)[12] = (regs)->dx;				\
	(pr_reg)[13] = (regs)->si;				\
	(pr_reg)[14] = (regs)->di;				\
	(pr_reg)[15] = (regs)->orig_ax;				\
	(pr_reg)[16] = (regs)->ip;				\
	(pr_reg)[17] = (regs)->cs;				\
	(pr_reg)[18] = (regs)->flags;				\
	(pr_reg)[19] = (regs)->sp;				\
	(pr_reg)[20] = (regs)->ss;				\
	(pr_reg)[21] = current->thread.fs;			\
	(pr_reg)[22] = current->thread.gs;			\
	asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v;	\
	asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v;	\
	asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v;	\
	asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v;	\
} while (0);

/* I'm not sure if we can use '-' here */
#define ELF_PLATFORM       ("x86_64")
extern void set_personality_64bit(void);
extern unsigned int sysctl_vsyscall32;
extern int force_personality32;

#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) 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;

#define	ARCH_DLINFO_IA32(vdso_enabled)					\
do {									\
	if (vdso_enabled) {						\
		NEW_AUX_ENT(AT_SYSINFO,	VDSO_ENTRY);			\
		NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);	\
	}								\
} while (0)

#ifdef CONFIG_X86_32

#define VDSO_HIGH_BASE		(__fix_to_virt(FIX_VDSO))

#define ARCH_DLINFO		ARCH_DLINFO_IA32(vdso_enabled)

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

#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)

#define AT_SYSINFO		32

#define COMPAT_ARCH_DLINFO	ARCH_DLINFO_IA32(sysctl_vsyscall32)

#define COMPAT_ELF_ET_DYN_BASE	(TASK_UNMAPPED_BASE + 0x1000000)

#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 uses_interp);

extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
#define compat_arch_setup_additional_pages	syscall32_setup_pages

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

#endif /* _ASM_X86_ELF_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_ELF_H
1965aae3 PA	2	#define _ASM_X86_ELF_H
2439a791 TG	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
486386f6	14	#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
2439a791 TG	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
a97f52e6 RM	75	#include <asm/vdso.h>
	76
	77	extern unsigned int vdso_enabled;
2439a791	78
af65d648 RM	79	/*
	80	* This is used to ensure we don't load something for the wrong architecture.
	81	*/
	82	#define elf_check_arch_ia32(x) \
	83	(((x)->e_machine == EM_386) \|\| ((x)->e_machine == EM_486))
	84
2439a791	85	#include <asm/processor.h>
9f9d489a	86	#include <asm/system.h>
e40c0fe6 JP	87
e40c0fe6 JP	88	#ifdef CONFIG_X86_32
2439a791 TG	89	#include <asm/desc.h>
2439a791 TG	90
af65d648	91	#define elf_check_arch(x) elf_check_arch_ia32(x)
2439a791 TG	92
	93	/* SVR4/i386 ABI (pages 3-31, 3-32) says that when the program starts %edx
	94	contains a pointer to a function which might be registered using `atexit'.
	95	This provides a mean for the dynamic linker to call DT_FINI functions for
	96	shared libraries that have been loaded before the code runs.
	97
	98	A value of 0 tells we have no such handler.
	99
	100	We might as well make sure everything else is cleared too (except for %esp),
	101	just to make things more deterministic.
	102	*/
486386f6 JP	103	#define ELF_PLAT_INIT(_r, load_addr) \
	104	do { \
	105	_r->bx = 0; _r->cx = 0; _r->dx = 0; \
	106	_r->si = 0; _r->di = 0; _r->bp = 0; \
	107	_r->ax = 0; \
2439a791 TG	108	} while (0)
2439a791 TG	109
06495476 HS	110	/*
	111	* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
	112	* now struct_user_regs, they are different)
	113	*/
	114
ccbeed3a	115	#define ELF_CORE_COPY_REGS_COMMON(pr_reg, regs) \
486386f6 JP	116	do { \
	117	pr_reg[0] = regs->bx; \
	118	pr_reg[1] = regs->cx; \
	119	pr_reg[2] = regs->dx; \
	120	pr_reg[3] = regs->si; \
	121	pr_reg[4] = regs->di; \
	122	pr_reg[5] = regs->bp; \
	123	pr_reg[6] = regs->ax; \
	124	pr_reg[7] = regs->ds & 0xffff; \
	125	pr_reg[8] = regs->es & 0xffff; \
	126	pr_reg[9] = regs->fs & 0xffff; \
486386f6 JP	127	pr_reg[11] = regs->orig_ax; \
	128	pr_reg[12] = regs->ip; \
	129	pr_reg[13] = regs->cs & 0xffff; \
	130	pr_reg[14] = regs->flags; \
	131	pr_reg[15] = regs->sp; \
	132	pr_reg[16] = regs->ss & 0xffff; \
06495476 HS	133	} while (0);
06495476 HS	134
ccbeed3a TH	135	#define ELF_CORE_COPY_REGS(pr_reg, regs) \
	136	do { \
	137	ELF_CORE_COPY_REGS_COMMON(pr_reg, regs);\
	138	pr_reg[10] = get_user_gs(regs); \
	139	} while (0);
	140
	141	#define ELF_CORE_COPY_KERNEL_REGS(pr_reg, regs) \
	142	do { \
	143	ELF_CORE_COPY_REGS_COMMON(pr_reg, regs);\
	144	savesegment(gs, pr_reg[10]); \
	145	} while (0);
	146
2439a791 TG	147	#define ELF_PLATFORM (utsname()->machine)
2439a791 TG	148	#define set_personality_64bit() do { } while (0)
2439a791 TG	149
	150	#else /* CONFIG_X86_32 */
	151
2439a791 TG	152	/*
	153	* This is used to ensure we don't load something for the wrong architecture.
	154	*/
486386f6	155	#define elf_check_arch(x) \
2439a791 TG	156	((x)->e_machine == EM_X86_64)
2439a791 TG	157
a97f52e6 RM	158	#define compat_elf_check_arch(x) elf_check_arch_ia32(x)
	159
	160	static inline void start_ia32_thread(struct pt_regs *regs, u32 ip, u32 sp)
	161	{
b6edbb1e JF	162	loadsegment(fs, 0);
	163	loadsegment(ds, __USER32_DS);
	164	loadsegment(es, __USER32_DS);
a97f52e6 RM	165	load_gs_index(0);
	166	regs->ip = ip;
	167	regs->sp = sp;
	168	regs->flags = X86_EFLAGS_IF;
	169	regs->cs = __USER32_CS;
	170	regs->ss = __USER32_DS;
	171	}
	172
	173	static inline void elf_common_init(struct thread_struct *t,
	174	struct pt_regs *regs, const u16 ds)
	175	{
	176	regs->ax = regs->bx = regs->cx = regs->dx = 0;
	177	regs->si = regs->di = regs->bp = 0;
	178	regs->r8 = regs->r9 = regs->r10 = regs->r11 = 0;
	179	regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
	180	t->fs = t->gs = 0;
	181	t->fsindex = t->gsindex = 0;
	182	t->ds = t->es = ds;
	183	}
	184
486386f6 JP	185	#define ELF_PLAT_INIT(_r, load_addr) \
	186	do { \
	187	elf_common_init(&current->thread, _r, 0); \
	188	clear_thread_flag(TIF_IA32); \
2439a791 TG	189	} while (0)
2439a791 TG	190
486386f6	191	#define COMPAT_ELF_PLAT_INIT(regs, load_addr) \
a97f52e6	192	elf_common_init(&current->thread, regs, __USER_DS)
486386f6 JP	193
	194	#define compat_start_thread(regs, ip, sp) \
	195	do { \
	196	start_ia32_thread(regs, ip, sp); \
	197	set_fs(USER_DS); \
	198	} while (0)
	199
0b592682	200	#define COMPAT_SET_PERSONALITY(ex) \
486386f6 JP	201	do { \
	202	if (test_thread_flag(TIF_IA32)) \
	203	clear_thread_flag(TIF_ABI_PENDING); \
	204	else \
	205	set_thread_flag(TIF_ABI_PENDING); \
	206	current->personality \|= force_personality32; \
	207	} while (0)
	208
a97f52e6 RM	209	#define COMPAT_ELF_PLATFORM ("i686")
a97f52e6 RM	210
06495476 HS	211	/*
	212	* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
	213	* now struct_user_regs, they are different). Assumes current is the process
	214	* getting dumped.
	215	*/
	216
486386f6 JP	217	#define ELF_CORE_COPY_REGS(pr_reg, regs) \
486386f6 JP	218	do { \
06495476 HS	219	unsigned v; \
	220	(pr_reg)[0] = (regs)->r15; \
	221	(pr_reg)[1] = (regs)->r14; \
	222	(pr_reg)[2] = (regs)->r13; \
	223	(pr_reg)[3] = (regs)->r12; \
	224	(pr_reg)[4] = (regs)->bp; \
	225	(pr_reg)[5] = (regs)->bx; \
	226	(pr_reg)[6] = (regs)->r11; \
	227	(pr_reg)[7] = (regs)->r10; \
	228	(pr_reg)[8] = (regs)->r9; \
	229	(pr_reg)[9] = (regs)->r8; \
	230	(pr_reg)[10] = (regs)->ax; \
	231	(pr_reg)[11] = (regs)->cx; \
	232	(pr_reg)[12] = (regs)->dx; \
	233	(pr_reg)[13] = (regs)->si; \
	234	(pr_reg)[14] = (regs)->di; \
	235	(pr_reg)[15] = (regs)->orig_ax; \
	236	(pr_reg)[16] = (regs)->ip; \
	237	(pr_reg)[17] = (regs)->cs; \
	238	(pr_reg)[18] = (regs)->flags; \
	239	(pr_reg)[19] = (regs)->sp; \
	240	(pr_reg)[20] = (regs)->ss; \
	241	(pr_reg)[21] = current->thread.fs; \
	242	(pr_reg)[22] = current->thread.gs; \
	243	asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
	244	asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
	245	asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
	246	asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \
	247	} while (0);
	248
2439a791 TG	249	/* I'm not sure if we can use '-' here */
	250	#define ELF_PLATFORM ("x86_64")
	251	extern void set_personality_64bit(void);
a97f52e6 RM	252	extern unsigned int sysctl_vsyscall32;
a97f52e6 RM	253	extern int force_personality32;
2439a791 TG	254
	255	#endif /* !CONFIG_X86_32 */
	256
975511be	257	#define CORE_DUMP_USE_REGSET
2439a791 TG	258	#define USE_ELF_CORE_DUMP
	259	#define ELF_EXEC_PAGESIZE 4096
	260
	261	/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	262	use of this is to invoke "./ld.so someprog" to test out a new version of
	263	the loader. We need to make sure that it is out of the way of the program
	264	that it will "exec", and that there is sufficient room for the brk. */
	265
	266	#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
	267
	268	/* This yields a mask that user programs can use to figure out what
	269	instruction set this CPU supports. This could be done in user space,
	270	but it's not easy, and we've already done it here. */
	271
	272	#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
	273
	274	/* This yields a string that ld.so will use to load implementation
	275	specific libraries for optimization. This is more specific in
	276	intent than poking at uname or /proc/cpuinfo.
	277
	278	For the moment, we have only optimizations for the Intel generations,
	279	but that could change... */
	280
0b592682	281	#define SET_PERSONALITY(ex) set_personality_64bit()
2439a791 TG	282
	283	/*
	284	* An executable for which elf_read_implies_exec() returns TRUE will
	285	* have the READ_IMPLIES_EXEC personality flag set automatically.
	286	*/
	287	#define elf_read_implies_exec(ex, executable_stack) \
	288	(executable_stack != EXSTACK_DISABLE_X)
	289
	290	struct task_struct;
	291
486386f6 JP	292	#define ARCH_DLINFO_IA32(vdso_enabled) \
	293	do { \
	294	if (vdso_enabled) { \
a97f52e6 RM	295	NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
a97f52e6 RM	296	NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
486386f6	297	} \
a97f52e6 RM	298	} while (0)
a97f52e6 RM	299
2439a791	300	#ifdef CONFIG_X86_32
2439a791 TG	301
2439a791 TG	302	#define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
2439a791	303
a97f52e6	304	#define ARCH_DLINFO ARCH_DLINFO_IA32(vdso_enabled)
2439a791	305
a97f52e6	306	/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
2439a791 TG	307
	308	#else /* CONFIG_X86_32 */
	309
af65d648 RM	310	#define VDSO_HIGH_BASE 0xffffe000U /* CONFIG_COMPAT_VDSO address */
af65d648 RM	311
2439a791 TG	312	/* 1GB for 64bit, 8MB for 32bit */
	313	#define STACK_RND_MASK (test_thread_flag(TIF_IA32) ? 0x7ff : 0x3fffff)
	314
486386f6 JP	315	#define ARCH_DLINFO \
	316	do { \
	317	if (vdso_enabled) \
	318	NEW_AUX_ENT(AT_SYSINFO_EHDR, \
	319	(unsigned long)current->mm->context.vdso); \
2439a791 TG	320	} while (0)
2439a791 TG	321
a97f52e6 RM	322	#define AT_SYSINFO 32
	323
	324	#define COMPAT_ARCH_DLINFO ARCH_DLINFO_IA32(sysctl_vsyscall32)
	325
	326	#define COMPAT_ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
	327
2439a791 TG	328	#endif /* !CONFIG_X86_32 */
2439a791 TG	329
af65d648 RM	330	#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
af65d648 RM	331
486386f6 JP	332	#define VDSO_ENTRY \
486386f6 JP	333	((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
af65d648	334
2439a791 TG	335	struct linux_binprm;
	336
	337	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	338	extern int arch_setup_additional_pages(struct linux_binprm *bprm,
fc5243d9	339	int uses_interp);
2439a791	340
a97f52e6 RM	341	extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
	342	#define compat_arch_setup_additional_pages syscall32_setup_pages
	343
c1d171a0 JK	344	extern unsigned long arch_randomize_brk(struct mm_struct *mm);
	345	#define arch_randomize_brk arch_randomize_brk
	346
1965aae3	347	#endif /* _ASM_X86_ELF_H */