[deliverable/linux.git] / arch / x86 / include / asm / elf.h

#ifndef _ASM_X86_ELF_H
#define _ASM_X86_ELF_H

/*
 * ELF register definitions..
 */
#include <linux/thread_info.h>

#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>

#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) || (x)->e_machine == EM_X86_64)

#if __USER32_DS != __USER_DS
# error "The following code assumes __USER32_DS == __USER_DS"
#endif

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)			\
	elf_common_init(&current->thread, _r, 0)

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

void start_thread_ia32(struct pt_regs *regs, u32 new_ip, u32 new_sp);
#define compat_start_thread start_thread_ia32

void set_personality_ia32(bool);
#define COMPAT_SET_PERSONALITY(ex)			\
	set_personality_ia32((ex).e_machine == EM_X86_64)

#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 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 STACK_RND_MASK (0x7ff)

#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_ADDR32) ? 0x7ff : 0x3fffff)

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

#define ARCH_DLINFO_X32							\
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						\
if (test_thread_flag(TIF_X32))						\
	ARCH_DLINFO_X32;						\
else									\
	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 x32_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

/*
 * True on X86_32 or when emulating IA32 on X86_64
 */
static inline int mmap_is_ia32(void)
{
#ifdef CONFIG_X86_32
	return 1;
#endif
#ifdef CONFIG_IA32_EMULATION
	if (test_thread_flag(TIF_ADDR32))
		return 1;
#endif
	return 0;
}

/* The first two values are special, do not change. See align_addr() */
enum align_flags {
	ALIGN_VA_32	= BIT(0),
	ALIGN_VA_64	= BIT(1),
	ALIGN_VDSO	= BIT(2),
	ALIGN_TOPDOWN	= BIT(3),
};

struct va_alignment {
	int flags;
	unsigned long mask;
} ____cacheline_aligned;

extern struct va_alignment va_align;
extern unsigned long align_addr(unsigned long, struct file *, enum align_flags);
#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	*/
dfb09f9b	7	#include <linux/thread_info.h>
2439a791 TG	8
	9	#include <asm/ptrace.h>
	10	#include <asm/user.h>
	11	#include <asm/auxvec.h>
	12
	13	typedef unsigned long elf_greg_t;
	14
486386f6	15	#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
2439a791 TG	16	typedef elf_greg_t elf_gregset_t[ELF_NGREG];
	17
	18	typedef struct user_i387_struct elf_fpregset_t;
	19
	20	#ifdef __i386__
	21
	22	typedef struct user_fxsr_struct elf_fpxregset_t;
	23
	24	#define R_386_NONE 0
	25	#define R_386_32 1
	26	#define R_386_PC32 2
	27	#define R_386_GOT32 3
	28	#define R_386_PLT32 4
	29	#define R_386_COPY 5
	30	#define R_386_GLOB_DAT 6
	31	#define R_386_JMP_SLOT 7
	32	#define R_386_RELATIVE 8
	33	#define R_386_GOTOFF 9
	34	#define R_386_GOTPC 10
	35	#define R_386_NUM 11
	36
	37	/*
	38	* These are used to set parameters in the core dumps.
	39	*/
	40	#define ELF_CLASS ELFCLASS32
	41	#define ELF_DATA ELFDATA2LSB
	42	#define ELF_ARCH EM_386
	43
96a388de	44	#else
2439a791 TG	45
	46	/* x86-64 relocation types */
	47	#define R_X86_64_NONE 0 /* No reloc */
	48	#define R_X86_64_64 1 /* Direct 64 bit */
	49	#define R_X86_64_PC32 2 /* PC relative 32 bit signed */
	50	#define R_X86_64_GOT32 3 /* 32 bit GOT entry */
	51	#define R_X86_64_PLT32 4 /* 32 bit PLT address */
	52	#define R_X86_64_COPY 5 /* Copy symbol at runtime */
	53	#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
	54	#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
	55	#define R_X86_64_RELATIVE 8 /* Adjust by program base */
	56	#define R_X86_64_GOTPCREL 9 /* 32 bit signed pc relative
	57	offset to GOT */
	58	#define R_X86_64_32 10 /* Direct 32 bit zero extended */
	59	#define R_X86_64_32S 11 /* Direct 32 bit sign extended */
	60	#define R_X86_64_16 12 /* Direct 16 bit zero extended */
	61	#define R_X86_64_PC16 13 /* 16 bit sign extended pc relative */
	62	#define R_X86_64_8 14 /* Direct 8 bit sign extended */
	63	#define R_X86_64_PC8 15 /* 8 bit sign extended pc relative */
	64
	65	#define R_X86_64_NUM 16
	66
	67	/*
	68	* These are used to set parameters in the core dumps.
	69	*/
	70	#define ELF_CLASS ELFCLASS64
	71	#define ELF_DATA ELFDATA2LSB
	72	#define ELF_ARCH EM_X86_64
	73
	74	#endif
	75
a97f52e6 RM	76	#include <asm/vdso.h>
	77
	78	extern unsigned int vdso_enabled;
2439a791	79
af65d648 RM	80	/*
	81	* This is used to ensure we don't load something for the wrong architecture.
	82	*/
	83	#define elf_check_arch_ia32(x) \
	84	(((x)->e_machine == EM_386) \|\| ((x)->e_machine == EM_486))
	85
2439a791	86	#include <asm/processor.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
d1a797f3 PA	158	#define compat_elf_check_arch(x) \
	159	(elf_check_arch_ia32(x) \|\| (x)->e_machine == EM_X86_64)
	160
	161	#if __USER32_DS != __USER_DS
	162	# error "The following code assumes __USER32_DS == __USER_DS"
	163	#endif
a97f52e6	164
a97f52e6 RM	165	static inline void elf_common_init(struct thread_struct *t,
	166	struct pt_regs *regs, const u16 ds)
	167	{
	168	regs->ax = regs->bx = regs->cx = regs->dx = 0;
	169	regs->si = regs->di = regs->bp = 0;
	170	regs->r8 = regs->r9 = regs->r10 = regs->r11 = 0;
	171	regs->r12 = regs->r13 = regs->r14 = regs->r15 = 0;
	172	t->fs = t->gs = 0;
	173	t->fsindex = t->gsindex = 0;
	174	t->ds = t->es = ds;
	175	}
	176
486386f6	177	#define ELF_PLAT_INIT(_r, load_addr) \
11557b24	178	elf_common_init(&current->thread, _r, 0)
2439a791	179
486386f6	180	#define COMPAT_ELF_PLAT_INIT(regs, load_addr) \
a97f52e6	181	elf_common_init(&current->thread, regs, __USER_DS)
486386f6	182
a6f05a6a PA	183	void start_thread_ia32(struct pt_regs *regs, u32 new_ip, u32 new_sp);
a6f05a6a PA	184	#define compat_start_thread start_thread_ia32
486386f6	185
d1a797f3 PA	186	void set_personality_ia32(bool);
	187	#define COMPAT_SET_PERSONALITY(ex) \
	188	set_personality_ia32((ex).e_machine == EM_X86_64)
486386f6	189
a97f52e6 RM	190	#define COMPAT_ELF_PLATFORM ("i686")
a97f52e6 RM	191
06495476 HS	192	/*
	193	* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
	194	* now struct_user_regs, they are different). Assumes current is the process
	195	* getting dumped.
	196	*/
	197
486386f6 JP	198	#define ELF_CORE_COPY_REGS(pr_reg, regs) \
486386f6 JP	199	do { \
06495476 HS	200	unsigned v; \
	201	(pr_reg)[0] = (regs)->r15; \
	202	(pr_reg)[1] = (regs)->r14; \
	203	(pr_reg)[2] = (regs)->r13; \
	204	(pr_reg)[3] = (regs)->r12; \
	205	(pr_reg)[4] = (regs)->bp; \
	206	(pr_reg)[5] = (regs)->bx; \
	207	(pr_reg)[6] = (regs)->r11; \
	208	(pr_reg)[7] = (regs)->r10; \
	209	(pr_reg)[8] = (regs)->r9; \
	210	(pr_reg)[9] = (regs)->r8; \
	211	(pr_reg)[10] = (regs)->ax; \
	212	(pr_reg)[11] = (regs)->cx; \
	213	(pr_reg)[12] = (regs)->dx; \
	214	(pr_reg)[13] = (regs)->si; \
	215	(pr_reg)[14] = (regs)->di; \
	216	(pr_reg)[15] = (regs)->orig_ax; \
	217	(pr_reg)[16] = (regs)->ip; \
	218	(pr_reg)[17] = (regs)->cs; \
	219	(pr_reg)[18] = (regs)->flags; \
	220	(pr_reg)[19] = (regs)->sp; \
	221	(pr_reg)[20] = (regs)->ss; \
	222	(pr_reg)[21] = current->thread.fs; \
	223	(pr_reg)[22] = current->thread.gs; \
	224	asm("movl %%ds,%0" : "=r" (v)); (pr_reg)[23] = v; \
	225	asm("movl %%es,%0" : "=r" (v)); (pr_reg)[24] = v; \
	226	asm("movl %%fs,%0" : "=r" (v)); (pr_reg)[25] = v; \
	227	asm("movl %%gs,%0" : "=r" (v)); (pr_reg)[26] = v; \
	228	} while (0);
	229
2439a791 TG	230	/* I'm not sure if we can use '-' here */
	231	#define ELF_PLATFORM ("x86_64")
	232	extern void set_personality_64bit(void);
a97f52e6 RM	233	extern unsigned int sysctl_vsyscall32;
a97f52e6 RM	234	extern int force_personality32;
2439a791 TG	235
	236	#endif /* !CONFIG_X86_32 */
	237
975511be	238	#define CORE_DUMP_USE_REGSET
2439a791 TG	239	#define ELF_EXEC_PAGESIZE 4096
	240
	241	/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	242	use of this is to invoke "./ld.so someprog" to test out a new version of
	243	the loader. We need to make sure that it is out of the way of the program
	244	that it will "exec", and that there is sufficient room for the brk. */
	245
	246	#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
	247
	248	/* This yields a mask that user programs can use to figure out what
	249	instruction set this CPU supports. This could be done in user space,
	250	but it's not easy, and we've already done it here. */
	251
	252	#define ELF_HWCAP (boot_cpu_data.x86_capability[0])
	253
	254	/* This yields a string that ld.so will use to load implementation
	255	specific libraries for optimization. This is more specific in
	256	intent than poking at uname or /proc/cpuinfo.
	257
	258	For the moment, we have only optimizations for the Intel generations,
	259	but that could change... */
	260
0b592682	261	#define SET_PERSONALITY(ex) set_personality_64bit()
2439a791 TG	262
	263	/*
	264	* An executable for which elf_read_implies_exec() returns TRUE will
	265	* have the READ_IMPLIES_EXEC personality flag set automatically.
	266	*/
	267	#define elf_read_implies_exec(ex, executable_stack) \
	268	(executable_stack != EXSTACK_DISABLE_X)
	269
	270	struct task_struct;
	271
486386f6 JP	272	#define ARCH_DLINFO_IA32(vdso_enabled) \
	273	do { \
	274	if (vdso_enabled) { \
a97f52e6 RM	275	NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
a97f52e6 RM	276	NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
486386f6	277	} \
a97f52e6 RM	278	} while (0)
a97f52e6 RM	279
2439a791	280	#ifdef CONFIG_X86_32
2439a791	281
80938332 MH	282	#define STACK_RND_MASK (0x7ff)
80938332 MH	283
2439a791	284	#define VDSO_HIGH_BASE (__fix_to_virt(FIX_VDSO))
2439a791	285
a97f52e6	286	#define ARCH_DLINFO ARCH_DLINFO_IA32(vdso_enabled)
2439a791	287
a97f52e6	288	/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
2439a791 TG	289
	290	#else /* CONFIG_X86_32 */
	291
af65d648 RM	292	#define VDSO_HIGH_BASE 0xffffe000U /* CONFIG_COMPAT_VDSO address */
af65d648 RM	293
2439a791	294	/* 1GB for 64bit, 8MB for 32bit */
6bd33008	295	#define STACK_RND_MASK (test_thread_flag(TIF_ADDR32) ? 0x7ff : 0x3fffff)
2439a791	296
486386f6 JP	297	#define ARCH_DLINFO \
	298	do { \
	299	if (vdso_enabled) \
	300	NEW_AUX_ENT(AT_SYSINFO_EHDR, \
	301	(unsigned long)current->mm->context.vdso); \
2439a791 TG	302	} while (0)
2439a791 TG	303
d1a797f3 PA	304	#define ARCH_DLINFO_X32 \
	305	do { \
	306	if (vdso_enabled) \
	307	NEW_AUX_ENT(AT_SYSINFO_EHDR, \
	308	(unsigned long)current->mm->context.vdso); \
	309	} while (0)
	310
a97f52e6 RM	311	#define AT_SYSINFO 32
a97f52e6 RM	312
d1a797f3 PA	313	#define COMPAT_ARCH_DLINFO \
	314	if (test_thread_flag(TIF_X32)) \
	315	ARCH_DLINFO_X32; \
	316	else \
	317	ARCH_DLINFO_IA32(sysctl_vsyscall32)
a97f52e6 RM	318
	319	#define COMPAT_ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
	320
2439a791 TG	321	#endif /* !CONFIG_X86_32 */
2439a791 TG	322
af65d648 RM	323	#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
af65d648 RM	324
486386f6 JP	325	#define VDSO_ENTRY \
486386f6 JP	326	((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
af65d648	327
2439a791 TG	328	struct linux_binprm;
	329
	330	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	331	extern int arch_setup_additional_pages(struct linux_binprm *bprm,
fc5243d9	332	int uses_interp);
22e842d4 PA	333	extern int x32_setup_additional_pages(struct linux_binprm *bprm,
22e842d4 PA	334	int uses_interp);
2439a791	335
a97f52e6 RM	336	extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
	337	#define compat_arch_setup_additional_pages syscall32_setup_pages
	338
c1d171a0 JK	339	extern unsigned long arch_randomize_brk(struct mm_struct *mm);
	340	#define arch_randomize_brk arch_randomize_brk
	341
dfb09f9b BP	342	/*
	343	* True on X86_32 or when emulating IA32 on X86_64
	344	*/
	345	static inline int mmap_is_ia32(void)
	346	{
	347	#ifdef CONFIG_X86_32
	348	return 1;
	349	#endif
	350	#ifdef CONFIG_IA32_EMULATION
6bd33008	351	if (test_thread_flag(TIF_ADDR32))
dfb09f9b BP	352	return 1;
	353	#endif
	354	return 0;
	355	}
	356
	357	/* The first two values are special, do not change. See align_addr() */
	358	enum align_flags {
	359	ALIGN_VA_32 = BIT(0),
	360	ALIGN_VA_64 = BIT(1),
	361	ALIGN_VDSO = BIT(2),
	362	ALIGN_TOPDOWN = BIT(3),
	363	};
	364
	365	struct va_alignment {
	366	int flags;
	367	unsigned long mask;
	368	} ____cacheline_aligned;
	369
	370	extern struct va_alignment va_align;
	371	extern unsigned long align_addr(unsigned long, struct file *, enum align_flags);
1965aae3	372	#endif /* _ASM_X86_ELF_H */