[linux-2.6-block.git] / arch / s390 / include / asm / elf.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  S390 version
 *
 *  Derived from "include/asm-i386/elf.h"
 */

#ifndef __ASMS390_ELF_H
#define __ASMS390_ELF_H

/* s390 relocations defined by the ABIs */
#define R_390_NONE		0	/* No reloc.  */
#define R_390_8			1	/* Direct 8 bit.  */
#define R_390_12		2	/* Direct 12 bit.  */
#define R_390_16		3	/* Direct 16 bit.  */
#define R_390_32		4	/* Direct 32 bit.  */
#define R_390_PC32		5	/* PC relative 32 bit.	*/
#define R_390_GOT12		6	/* 12 bit GOT offset.  */
#define R_390_GOT32		7	/* 32 bit GOT offset.  */
#define R_390_PLT32		8	/* 32 bit PC relative PLT address.  */
#define R_390_COPY		9	/* Copy symbol at runtime.  */
#define R_390_GLOB_DAT		10	/* Create GOT entry.  */
#define R_390_JMP_SLOT		11	/* Create PLT entry.  */
#define R_390_RELATIVE		12	/* Adjust by program base.  */
#define R_390_GOTOFF32		13	/* 32 bit offset to GOT.	 */
#define R_390_GOTPC		14	/* 32 bit PC rel. offset to GOT.  */
#define R_390_GOT16		15	/* 16 bit GOT offset.  */
#define R_390_PC16		16	/* PC relative 16 bit.	*/
#define R_390_PC16DBL		17	/* PC relative 16 bit shifted by 1.  */
#define R_390_PLT16DBL		18	/* 16 bit PC rel. PLT shifted by 1.  */
#define R_390_PC32DBL		19	/* PC relative 32 bit shifted by 1.  */
#define R_390_PLT32DBL		20	/* 32 bit PC rel. PLT shifted by 1.  */
#define R_390_GOTPCDBL		21	/* 32 bit PC rel. GOT shifted by 1.  */
#define R_390_64		22	/* Direct 64 bit.  */
#define R_390_PC64		23	/* PC relative 64 bit.	*/
#define R_390_GOT64		24	/* 64 bit GOT offset.  */
#define R_390_PLT64		25	/* 64 bit PC relative PLT address.  */
#define R_390_GOTENT		26	/* 32 bit PC rel. to GOT entry >> 1. */
#define R_390_GOTOFF16		27	/* 16 bit offset to GOT. */
#define R_390_GOTOFF64		28	/* 64 bit offset to GOT. */
#define R_390_GOTPLT12		29	/* 12 bit offset to jump slot.	*/
#define R_390_GOTPLT16		30	/* 16 bit offset to jump slot.	*/
#define R_390_GOTPLT32		31	/* 32 bit offset to jump slot.	*/
#define R_390_GOTPLT64		32	/* 64 bit offset to jump slot.	*/
#define R_390_GOTPLTENT		33	/* 32 bit rel. offset to jump slot.  */
#define R_390_PLTOFF16		34	/* 16 bit offset from GOT to PLT. */
#define R_390_PLTOFF32		35	/* 32 bit offset from GOT to PLT. */
#define R_390_PLTOFF64		36	/* 16 bit offset from GOT to PLT. */
#define R_390_TLS_LOAD		37	/* Tag for load insn in TLS code. */
#define R_390_TLS_GDCALL	38	/* Tag for function call in general
                                           dynamic TLS code.  */
#define R_390_TLS_LDCALL	39	/* Tag for function call in local
                                           dynamic TLS code.  */
#define R_390_TLS_GD32		40	/* Direct 32 bit for general dynamic
                                           thread local data.  */
#define R_390_TLS_GD64		41	/* Direct 64 bit for general dynamic
                                           thread local data.  */
#define R_390_TLS_GOTIE12	42	/* 12 bit GOT offset for static TLS
                                           block offset.  */
#define R_390_TLS_GOTIE32	43	/* 32 bit GOT offset for static TLS
                                           block offset.  */
#define R_390_TLS_GOTIE64	44	/* 64 bit GOT offset for static TLS
                                           block offset.  */
#define R_390_TLS_LDM32		45	/* Direct 32 bit for local dynamic
                                           thread local data in LD code.  */
#define R_390_TLS_LDM64		46	/* Direct 64 bit for local dynamic
                                           thread local data in LD code.  */
#define R_390_TLS_IE32		47	/* 32 bit address of GOT entry for
                                           negated static TLS block offset.  */
#define R_390_TLS_IE64		48	/* 64 bit address of GOT entry for
                                           negated static TLS block offset.  */
#define R_390_TLS_IEENT		49	/* 32 bit rel. offset to GOT entry for
                                           negated static TLS block offset.  */
#define R_390_TLS_LE32		50	/* 32 bit negated offset relative to
                                           static TLS block.  */
#define R_390_TLS_LE64		51	/* 64 bit negated offset relative to
                                           static TLS block.  */
#define R_390_TLS_LDO32		52	/* 32 bit offset relative to TLS
                                           block.  */
#define R_390_TLS_LDO64		53	/* 64 bit offset relative to TLS
                                           block.  */
#define R_390_TLS_DTPMOD	54	/* ID of module containing symbol.  */
#define R_390_TLS_DTPOFF	55	/* Offset in TLS block.  */
#define R_390_TLS_TPOFF		56	/* Negate offset in static TLS
                                           block.  */
#define R_390_20		57	/* Direct 20 bit.  */
#define R_390_GOT20		58	/* 20 bit GOT offset.  */
#define R_390_GOTPLT20		59	/* 20 bit offset to jump slot.  */
#define R_390_TLS_GOTIE20	60	/* 20 bit GOT offset for static TLS
					   block offset.  */
/* Keep this the last entry.  */
#define R_390_NUM	61

/* Bits present in AT_HWCAP. */
#define HWCAP_S390_ESAN3	1
#define HWCAP_S390_ZARCH	2
#define HWCAP_S390_STFLE	4
#define HWCAP_S390_MSA		8
#define HWCAP_S390_LDISP	16
#define HWCAP_S390_EIMM		32
#define HWCAP_S390_DFP		64
#define HWCAP_S390_HPAGE	128
#define HWCAP_S390_ETF3EH	256
#define HWCAP_S390_HIGH_GPRS	512
#define HWCAP_S390_TE		1024
#define HWCAP_S390_VXRS		2048
#define HWCAP_S390_VXRS_BCD	4096
#define HWCAP_S390_VXRS_EXT	8192
#define HWCAP_S390_GS		16384

/* Internal bits, not exposed via elf */
#define HWCAP_INT_SIE		1UL

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS64
#define ELF_DATA	ELFDATA2MSB
#define ELF_ARCH	EM_S390

/* s390 specific phdr types */
#define PT_S390_PGSTE	0x70000000

/*
 * ELF register definitions..
 */

#include <asm/ptrace.h>
#include <asm/compat.h>
#include <asm/syscall.h>
#include <asm/user.h>

typedef s390_fp_regs elf_fpregset_t;
typedef s390_regs elf_gregset_t;

typedef s390_fp_regs compat_elf_fpregset_t;
typedef s390_compat_regs compat_elf_gregset_t;

#include <linux/compat.h>
#include <linux/sched/mm.h>	/* for task_struct */
#include <asm/mmu_context.h>

#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(x) \
	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
         && (x)->e_ident[EI_CLASS] == ELF_CLASS) 
#define compat_elf_check_arch(x) \
	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
	 && (x)->e_ident[EI_CLASS] == ELF_CLASS)
#define compat_start_thread	start_thread31

struct arch_elf_state {
	int rc;
};

#define INIT_ARCH_ELF_STATE { .rc = 0 }

#define arch_check_elf(ehdr, interp, interp_ehdr, state) (0)
#ifdef CONFIG_PGSTE
#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state)	\
({								\
	struct arch_elf_state *_state = state;			\
	if ((phdr)->p_type == PT_S390_PGSTE &&			\
	    !page_table_allocate_pgste &&			\
	    !test_thread_flag(TIF_PGSTE) &&			\
	    !current->mm->context.alloc_pgste) {		\
		set_thread_flag(TIF_PGSTE);			\
		set_pt_regs_flag(task_pt_regs(current),		\
				 PIF_SYSCALL_RESTART);		\
		_state->rc = -EAGAIN;				\
	}							\
	_state->rc;						\
})
#else
#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state)	\
({								\
	(state)->rc;						\
})
#endif

/* For SVR4/S390 the function pointer to be registered with `atexit` is
   passed in R14. */
#define ELF_PLAT_INIT(_r, load_addr) \
	do { \
		_r->gprs[14] = 0; \
	} while (0)

#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE	PAGE_SIZE

/*
 * This is the base location for PIE (ET_DYN with INTERP) loads. On
 * 64-bit, this is raised to 4GB to leave the entire 32-bit address
 * space open for things that want to use the area for 32-bit pointers.
 */
#define ELF_ET_DYN_BASE		(is_compat_task() ? 0x000400000UL : \
						    0x100000000UL)

/* This yields a mask that user programs can use to figure out what
   instruction set this CPU supports. */

extern unsigned long elf_hwcap;
#define ELF_HWCAP (elf_hwcap)

/* Internal hardware capabilities, not exposed via elf */

extern unsigned long int_hwcap;

/* 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 ELF_PLATFORM_SIZE 8
extern char elf_platform[];
#define ELF_PLATFORM (elf_platform)

#ifndef CONFIG_COMPAT
#define SET_PERSONALITY(ex) \
do {								\
	set_personality(PER_LINUX |				\
		(current->personality & (~PER_MASK)));		\
	current->thread.sys_call_table =			\
		(unsigned long) &sys_call_table;		\
} while (0)
#else /* CONFIG_COMPAT */
#define SET_PERSONALITY(ex)					\
do {								\
	if (personality(current->personality) != PER_LINUX32)	\
		set_personality(PER_LINUX |			\
			(current->personality & ~PER_MASK));	\
	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {		\
		set_thread_flag(TIF_31BIT);			\
		current->thread.sys_call_table =		\
			(unsigned long)	&sys_call_table_emu;	\
	} else {						\
		clear_thread_flag(TIF_31BIT);			\
		current->thread.sys_call_table =		\
			(unsigned long) &sys_call_table;	\
	}							\
} while (0)
#endif /* CONFIG_COMPAT */

/*
 * Cache aliasing on the latest machines calls for a mapping granularity
 * of 512KB. For 64-bit processes use a 512KB alignment and a randomization
 * of up to 1GB. For 31-bit processes the virtual address space is limited,
 * use no alignment and limit the randomization to 8MB.
 */
#define BRK_RND_MASK	(is_compat_task() ? 0x7ffUL : 0x3ffffUL)
#define MMAP_RND_MASK	(is_compat_task() ? 0x7ffUL : 0x3ff80UL)
#define MMAP_ALIGN_MASK	(is_compat_task() ? 0 : 0x7fUL)
#define STACK_RND_MASK	MMAP_RND_MASK

/* 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_EHDR,				    \
			    (unsigned long)current->mm->context.vdso_base); \
} while (0)

struct linux_binprm;

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

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4	2	/*
1da177e4 LT	3	* S390 version
	4	*
	5	* Derived from "include/asm-i386/elf.h"
	6	*/
	7
	8	#ifndef __ASMS390_ELF_H
	9	#define __ASMS390_ELF_H
	10
	11	/* s390 relocations defined by the ABIs */
	12	#define R_390_NONE 0 /* No reloc. */
	13	#define R_390_8 1 /* Direct 8 bit. */
	14	#define R_390_12 2 /* Direct 12 bit. */
	15	#define R_390_16 3 /* Direct 16 bit. */
	16	#define R_390_32 4 /* Direct 32 bit. */
	17	#define R_390_PC32 5 /* PC relative 32 bit. */
	18	#define R_390_GOT12 6 /* 12 bit GOT offset. */
	19	#define R_390_GOT32 7 /* 32 bit GOT offset. */
	20	#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
	21	#define R_390_COPY 9 /* Copy symbol at runtime. */
	22	#define R_390_GLOB_DAT 10 /* Create GOT entry. */
	23	#define R_390_JMP_SLOT 11 /* Create PLT entry. */
	24	#define R_390_RELATIVE 12 /* Adjust by program base. */
	25	#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
	26	#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
	27	#define R_390_GOT16 15 /* 16 bit GOT offset. */
	28	#define R_390_PC16 16 /* PC relative 16 bit. */
	29	#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
	30	#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
	31	#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
	32	#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
	33	#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
	34	#define R_390_64 22 /* Direct 64 bit. */
	35	#define R_390_PC64 23 /* PC relative 64 bit. */
	36	#define R_390_GOT64 24 /* 64 bit GOT offset. */
	37	#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
	38	#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
	39	#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
	40	#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
	41	#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
	42	#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
	43	#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
	44	#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
	45	#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
	46	#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
	47	#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
	48	#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
	49	#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
	50	#define R_390_TLS_GDCALL 38 /* Tag for function call in general
	51	dynamic TLS code. */
	52	#define R_390_TLS_LDCALL 39 /* Tag for function call in local
	53	dynamic TLS code. */
	54	#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
	55	thread local data. */
	56	#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
	57	thread local data. */
	58	#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
	59	block offset. */
	60	#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
	61	block offset. */
	62	#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
	63	block offset. */
	64	#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
	65	thread local data in LD code. */
	66	#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
67	thread local data in LD code. */
68	#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
69	negated static TLS block offset. */
70	#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
71	negated static TLS block offset. */
72	#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
73	negated static TLS block offset. */
74	#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
75	static TLS block. */
76	#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
77	static TLS block. */
78	#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
79	block. */
80	#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
81	block. */
82	#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
83	#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
84	#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
85	block. */
86	#define R_390_20 57 /* Direct 20 bit. */
87	#define R_390_GOT20 58 /* 20 bit GOT offset. */
88	#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */
89	#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS
90	block offset. */
91	/* Keep this the last entry. */
92	#define R_390_NUM 61
93
ea2a4d3a HC	94	/* Bits present in AT_HWCAP. */
	95	#define HWCAP_S390_ESAN3 1
	96	#define HWCAP_S390_ZARCH 2
	97	#define HWCAP_S390_STFLE 4
	98	#define HWCAP_S390_MSA 8
	99	#define HWCAP_S390_LDISP 16
	100	#define HWCAP_S390_EIMM 32
	101	#define HWCAP_S390_DFP 64
	102	#define HWCAP_S390_HPAGE 128
	103	#define HWCAP_S390_ETF3EH 256
	104	#define HWCAP_S390_HIGH_GPRS 512
d35339a4	105	#define HWCAP_S390_TE 1024
80703617	106	#define HWCAP_S390_VXRS 2048
2583b848 MS	107	#define HWCAP_S390_VXRS_BCD 4096
2583b848 MS	108	#define HWCAP_S390_VXRS_EXT 8192
916cda1a	109	#define HWCAP_S390_GS 16384
ea2a4d3a	110
7f16d7e7 DH	111	/* Internal bits, not exposed via elf */
	112	#define HWCAP_INT_SIE 1UL
	113
1da177e4 LT	114	/*
	115	* These are used to set parameters in the core dumps.
	116	*/
1da177e4	117	#define ELF_CLASS ELFCLASS64
1da177e4 LT	118	#define ELF_DATA ELFDATA2MSB
	119	#define ELF_ARCH EM_S390
	120
23fefe11 MS	121	/* s390 specific phdr types */
	122	#define PT_S390_PGSTE 0x70000000
	123
124b51c7 DW	124	/*
	125	* ELF register definitions..
	126	*/
	127
	128	#include <asm/ptrace.h>
e4371f60	129	#include <asm/compat.h>
61649881	130	#include <asm/syscall.h>
124b51c7 DW	131	#include <asm/user.h>
	132
	133	typedef s390_fp_regs elf_fpregset_t;
	134	typedef s390_regs elf_gregset_t;
	135
63506c41 MS	136	typedef s390_fp_regs compat_elf_fpregset_t;
	137	typedef s390_compat_regs compat_elf_gregset_t;
	138
9eb31be3	139	#include <linux/compat.h>
589ee628	140	#include <linux/sched/mm.h> /* for task_struct */
146e4b3c	141	#include <asm/mmu_context.h>
124b51c7	142
b020632e MS	143	#include <asm/vdso.h>
	144
	145	extern unsigned int vdso_enabled;
	146
1da177e4 LT	147	/*
	148	* This is used to ensure we don't load something for the wrong architecture.
	149	*/
	150	#define elf_check_arch(x) \
	151	(((x)->e_machine == EM_S390 \|\| (x)->e_machine == EM_S390_OLD) \
	152	&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
63506c41 MS	153	#define compat_elf_check_arch(x) \
	154	(((x)->e_machine == EM_S390 \|\| (x)->e_machine == EM_S390_OLD) \
	155	&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
	156	#define compat_start_thread start_thread31
1da177e4	157
23fefe11 MS	158	struct arch_elf_state {
	159	int rc;
	160	};
	161
	162	#define INIT_ARCH_ELF_STATE { .rc = 0 }
	163
	164	#define arch_check_elf(ehdr, interp, interp_ehdr, state) (0)
	165	#ifdef CONFIG_PGSTE
	166	#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state) \
	167	({ \
	168	struct arch_elf_state *_state = state; \
	169	if ((phdr)->p_type == PT_S390_PGSTE && \
	170	!page_table_allocate_pgste && \
	171	!test_thread_flag(TIF_PGSTE) && \
	172	!current->mm->context.alloc_pgste) { \
	173	set_thread_flag(TIF_PGSTE); \
	174	set_pt_regs_flag(task_pt_regs(current), \
	175	PIF_SYSCALL_RESTART); \
	176	_state->rc = -EAGAIN; \
	177	} \
	178	_state->rc; \
	179	})
	180	#else
	181	#define arch_elf_pt_proc(ehdr, phdr, elf, interp, state) \
	182	({ \
	183	(state)->rc; \
	184	})
	185	#endif
	186
1da177e4 LT	187	/* For SVR4/S390 the function pointer to be registered with `atexit` is
	188	passed in R14. */
	189	#define ELF_PLAT_INIT(_r, load_addr) \
	190	do { \
	191	_r->gprs[14] = 0; \
	192	} while (0)
	193
63506c41	194	#define CORE_DUMP_USE_REGSET
f1c1174f	195	#define ELF_EXEC_PAGESIZE PAGE_SIZE
1da177e4	196
a73dc537 KC	197	/*
	198	* This is the base location for PIE (ET_DYN with INTERP) loads. On
	199	* 64-bit, this is raised to 4GB to leave the entire 32-bit address
	200	* space open for things that want to use the area for 32-bit pointers.
	201	*/
	202	#define ELF_ET_DYN_BASE (is_compat_task() ? 0x000400000UL : \
	203	0x100000000UL)
1da177e4	204
1da177e4 LT	205	/* This yields a mask that user programs can use to figure out what
	206	instruction set this CPU supports. */
	207
cf8ba7a9 MS	208	extern unsigned long elf_hwcap;
cf8ba7a9 MS	209	#define ELF_HWCAP (elf_hwcap)
1da177e4	210
7f16d7e7 DH	211	/* Internal hardware capabilities, not exposed via elf */
	212
	213	extern unsigned long int_hwcap;
	214
1da177e4 LT	215	/* This yields a string that ld.so will use to load implementation
	216	specific libraries for optimization. This is more specific in
	217	intent than poking at uname or /proc/cpuinfo.
	218
	219	For the moment, we have only optimizations for the Intel generations,
	220	but that could change... */
	221
cf8ba7a9 MS	222	#define ELF_PLATFORM_SIZE 8
	223	extern char elf_platform[];
	224	#define ELF_PLATFORM (elf_platform)
1da177e4	225
61649881 MS	226	#ifndef CONFIG_COMPAT
	227	#define SET_PERSONALITY(ex) \
	228	do { \
	229	set_personality(PER_LINUX \| \
	230	(current->personality & (~PER_MASK))); \
ef280c85	231	current->thread.sys_call_table = \
61649881 MS	232	(unsigned long) &sys_call_table; \
	233	} while (0)
	234	#else /* CONFIG_COMPAT */
03e4c49f HC	235	#define SET_PERSONALITY(ex) \
	236	do { \
	237	if (personality(current->personality) != PER_LINUX32) \
f9783ec8 MS	238	set_personality(PER_LINUX \| \
f9783ec8 MS	239	(current->personality & ~PER_MASK)); \
61649881	240	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) { \
03e4c49f	241	set_thread_flag(TIF_31BIT); \
ef280c85	242	current->thread.sys_call_table = \
61649881 MS	243	(unsigned long) &sys_call_table_emu; \
61649881 MS	244	} else { \
03e4c49f	245	clear_thread_flag(TIF_31BIT); \
ef280c85	246	current->thread.sys_call_table = \
61649881 MS	247	(unsigned long) &sys_call_table; \
61649881 MS	248	} \
1da177e4	249	} while (0)
61649881	250	#endif /* CONFIG_COMPAT */
1da177e4	251
c7e8b2c2 MS	252	/*
	253	* Cache aliasing on the latest machines calls for a mapping granularity
	254	* of 512KB. For 64-bit processes use a 512KB alignment and a randomization
	255	* of up to 1GB. For 31-bit processes the virtual address space is limited,
	256	* use no alignment and limit the randomization to 8MB.
	257	*/
9eb31be3 HC	258	#define BRK_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ffffUL)
	259	#define MMAP_RND_MASK (is_compat_task() ? 0x7ffUL : 0x3ff80UL)
	260	#define MMAP_ALIGN_MASK (is_compat_task() ? 0 : 0x7fUL)
c7e8b2c2	261	#define STACK_RND_MASK MMAP_RND_MASK
9046e401	262
68c5cf5a	263	/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
b020632e MS	264	#define ARCH_DLINFO \
	265	do { \
	266	if (vdso_enabled) \
	267	NEW_AUX_ENT(AT_SYSINFO_EHDR, \
	268	(unsigned long)current->mm->context.vdso_base); \
	269	} while (0)
	270
	271	struct linux_binprm;
	272
	273	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	274	int arch_setup_additional_pages(struct linux_binprm *, int);
	275
1da177e4	276	#endif