arch/s390/include/asm/elf.h - linux-mtk - Git at Google

 /* 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
	/* 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