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/*
 *  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

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/* 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
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#define HWCAP_S390_TE		1024
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#define HWCAP_S390_VXRS		2048
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/*
 * These are used to set parameters in the core dumps.
 */
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#ifndef CONFIG_64BIT
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#define ELF_CLASS	ELFCLASS32
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#else /* CONFIG_64BIT */
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#define ELF_CLASS	ELFCLASS64
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#endif /* CONFIG_64BIT */
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#define ELF_DATA	ELFDATA2MSB
#define ELF_ARCH	EM_S390

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/*
 * ELF register definitions..
 */

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

typedef s390_fp_regs elf_fpregset_t;
typedef s390_regs elf_gregset_t;

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typedef s390_fp_regs compat_elf_fpregset_t;
typedef s390_compat_regs compat_elf_gregset_t;

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

extern unsigned int vdso_enabled;

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/*
 * 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) 
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#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
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/* 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)

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#define CORE_DUMP_USE_REGSET
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#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
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   that it will "exec", and that there is sufficient room for the brk. 64-bit
   tasks are aligned to 4GB. */
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#define ELF_ET_DYN_BASE (is_32bit_task() ? \
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				(STACK_TOP / 3 * 2) : \
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				(STACK_TOP / 3 * 2) & ~((1UL << 32) - 1))
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/* This yields a mask that user programs can use to figure out what
   instruction set this CPU supports. */

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extern unsigned long elf_hwcap;
#define ELF_HWCAP (elf_hwcap)
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/* 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... */

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#define ELF_PLATFORM_SIZE 8
extern char elf_platform[];
#define ELF_PLATFORM (elf_platform)
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#ifndef CONFIG_COMPAT
#define SET_PERSONALITY(ex) \
do {								\
	set_personality(PER_LINUX |				\
		(current->personality & (~PER_MASK)));		\
	current_thread_info()->sys_call_table = 		\
		(unsigned long) &sys_call_table;		\
} while (0)
#else /* CONFIG_COMPAT */
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#define SET_PERSONALITY(ex)					\
do {								\
	if (personality(current->personality) != PER_LINUX32)	\
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		set_personality(PER_LINUX |			\
			(current->personality & ~PER_MASK));	\
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	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) {		\
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		set_thread_flag(TIF_31BIT);			\
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		current_thread_info()->sys_call_table =		\
			(unsigned long)	&sys_call_table_emu;	\
	} else {						\
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		clear_thread_flag(TIF_31BIT);			\
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		current_thread_info()->sys_call_table =		\
			(unsigned long) &sys_call_table;	\
	}							\
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} while (0)
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#endif /* CONFIG_COMPAT */
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extern unsigned long mmap_rnd_mask;

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#define STACK_RND_MASK	(test_thread_flag(TIF_31BIT) ? 0x7ff : mmap_rnd_mask)
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#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);

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

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void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vxrs);
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#endif