[mirror_ubuntu-kernels.git] / arch / s390 / include / asm / elf.h

/*
 *  include/asm-s390/elf.h
 *
 *  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

/*
 * These are used to set parameters in the core dumps.
 */
#ifndef __s390x__
#define ELF_CLASS	ELFCLASS32
#else /* __s390x__ */
#define ELF_CLASS	ELFCLASS64
#endif /* __s390x__ */
#define ELF_DATA	ELFDATA2MSB
#define ELF_ARCH	EM_S390

/*
 * ELF register definitions..
 */

#include <asm/ptrace.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/sched.h>	/* for task_struct */
#include <asm/system.h>		/* for save_access_regs */
#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

/* 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 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		(STACK_TOP / 3 * 2)

/* 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)

/* 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 __s390x__
#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
#else /* __s390x__ */
#define SET_PERSONALITY(ex)				\
do {							\
	if (current->personality != PER_LINUX32)	\
		set_personality(PER_LINUX);		\
	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)	\
		set_thread_flag(TIF_31BIT);		\
	else						\
		clear_thread_flag(TIF_31BIT);		\
} while (0)
#endif /* __s390x__ */

/*
 * 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)	\
({							\
	if (current->mm->context.noexec &&		\
	    executable_stack != EXSTACK_DISABLE_X)	\
		disable_noexec(current->mm, current);	\
	current->mm->context.noexec == 0;		\
})

#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
1da177e4 LT	1	/*
	2	* include/asm-s390/elf.h
	3	*
	4	* S390 version
	5	*
	6	* Derived from "include/asm-i386/elf.h"
	7	*/
	8
	9	#ifndef __ASMS390_ELF_H
	10	#define __ASMS390_ELF_H
	11
	12	/* s390 relocations defined by the ABIs */
	13	#define R_390_NONE 0 /* No reloc. */
	14	#define R_390_8 1 /* Direct 8 bit. */
	15	#define R_390_12 2 /* Direct 12 bit. */
	16	#define R_390_16 3 /* Direct 16 bit. */
	17	#define R_390_32 4 /* Direct 32 bit. */
	18	#define R_390_PC32 5 /* PC relative 32 bit. */
	19	#define R_390_GOT12 6 /* 12 bit GOT offset. */
	20	#define R_390_GOT32 7 /* 32 bit GOT offset. */
	21	#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */
	22	#define R_390_COPY 9 /* Copy symbol at runtime. */
	23	#define R_390_GLOB_DAT 10 /* Create GOT entry. */
	24	#define R_390_JMP_SLOT 11 /* Create PLT entry. */
	25	#define R_390_RELATIVE 12 /* Adjust by program base. */
	26	#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */
	27	#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */
	28	#define R_390_GOT16 15 /* 16 bit GOT offset. */
	29	#define R_390_PC16 16 /* PC relative 16 bit. */
	30	#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */
	31	#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */
	32	#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */
	33	#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */
	34	#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */
	35	#define R_390_64 22 /* Direct 64 bit. */
	36	#define R_390_PC64 23 /* PC relative 64 bit. */
	37	#define R_390_GOT64 24 /* 64 bit GOT offset. */
	38	#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */
	39	#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */
	40	#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */
	41	#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */
	42	#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */
	43	#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */
	44	#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */
	45	#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */
	46	#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */
	47	#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */
	48	#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */
	49	#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */
	50	#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */
	51	#define R_390_TLS_GDCALL 38 /* Tag for function call in general
	52	dynamic TLS code. */
	53	#define R_390_TLS_LDCALL 39 /* Tag for function call in local
	54	dynamic TLS code. */
	55	#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic
	56	thread local data. */
	57	#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic
	58	thread local data. */
	59	#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS
	60	block offset. */
	61	#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS
	62	block offset. */
	63	#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS
	64	block offset. */
65	#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic
66	thread local data in LD code. */
67	#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic
68	thread local data in LD code. */
69	#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for
70	negated static TLS block offset. */
71	#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for
72	negated static TLS block offset. */
73	#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for
74	negated static TLS block offset. */
75	#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to
76	static TLS block. */
77	#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to
78	static TLS block. */
79	#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS
80	block. */
81	#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS
82	block. */
83	#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */
84	#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */
85	#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS
86	block. */
87	#define R_390_20 57 /* Direct 20 bit. */
88	#define R_390_GOT20 58 /* 20 bit GOT offset. */
89	#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */
90	#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS
91	block offset. */
92	/* Keep this the last entry. */
93	#define R_390_NUM 61
94
1da177e4 LT	95	/*
	96	* These are used to set parameters in the core dumps.
	97	*/
	98	#ifndef __s390x__
	99	#define ELF_CLASS ELFCLASS32
	100	#else /* __s390x__ */
	101	#define ELF_CLASS ELFCLASS64
	102	#endif /* __s390x__ */
	103	#define ELF_DATA ELFDATA2MSB
	104	#define ELF_ARCH EM_S390
	105
124b51c7 DW	106	/*
	107	* ELF register definitions..
	108	*/
	109
	110	#include <asm/ptrace.h>
	111	#include <asm/user.h>
	112
	113	typedef s390_fp_regs elf_fpregset_t;
	114	typedef s390_regs elf_gregset_t;
	115
63506c41 MS	116	typedef s390_fp_regs compat_elf_fpregset_t;
	117	typedef s390_compat_regs compat_elf_gregset_t;
	118
124b51c7 DW	119	#include <linux/sched.h> /* for task_struct */
124b51c7 DW	120	#include <asm/system.h> /* for save_access_regs */
146e4b3c	121	#include <asm/mmu_context.h>
124b51c7	122
b020632e MS	123	#include <asm/vdso.h>
	124
	125	extern unsigned int vdso_enabled;
	126
1da177e4 LT	127	/*
	128	* This is used to ensure we don't load something for the wrong architecture.
	129	*/
	130	#define elf_check_arch(x) \
	131	(((x)->e_machine == EM_S390 \|\| (x)->e_machine == EM_S390_OLD) \
	132	&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
63506c41 MS	133	#define compat_elf_check_arch(x) \
	134	(((x)->e_machine == EM_S390 \|\| (x)->e_machine == EM_S390_OLD) \
	135	&& (x)->e_ident[EI_CLASS] == ELF_CLASS)
	136	#define compat_start_thread start_thread31
1da177e4 LT	137
	138	/* For SVR4/S390 the function pointer to be registered with `atexit` is
	139	passed in R14. */
	140	#define ELF_PLAT_INIT(_r, load_addr) \
	141	do { \
	142	_r->gprs[14] = 0; \
	143	} while (0)
	144
63506c41	145	#define CORE_DUMP_USE_REGSET
1da177e4 LT	146	#define USE_ELF_CORE_DUMP
	147	#define ELF_EXEC_PAGESIZE 4096
	148
	149	/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	150	use of this is to invoke "./ld.so someprog" to test out a new version of
	151	the loader. We need to make sure that it is out of the way of the program
	152	that it will "exec", and that there is sufficient room for the brk. */
6252d702	153	#define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2)
1da177e4	154
1da177e4 LT	155	/* This yields a mask that user programs can use to figure out what
	156	instruction set this CPU supports. */
	157
cf8ba7a9 MS	158	extern unsigned long elf_hwcap;
cf8ba7a9 MS	159	#define ELF_HWCAP (elf_hwcap)
1da177e4 LT	160
	161	/* This yields a string that ld.so will use to load implementation
	162	specific libraries for optimization. This is more specific in
	163	intent than poking at uname or /proc/cpuinfo.
	164
	165	For the moment, we have only optimizations for the Intel generations,
	166	but that could change... */
	167
cf8ba7a9 MS	168	#define ELF_PLATFORM_SIZE 8
	169	extern char elf_platform[];
	170	#define ELF_PLATFORM (elf_platform)
1da177e4	171
1da177e4	172	#ifndef __s390x__
0b592682	173	#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
1da177e4	174	#else /* __s390x__ */
0b592682	175	#define SET_PERSONALITY(ex) \
1da177e4	176	do { \
0b592682	177	if (current->personality != PER_LINUX32) \
1da177e4	178	set_personality(PER_LINUX); \
63506c41 MS	179	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
	180	set_thread_flag(TIF_31BIT); \
	181	else \
	182	clear_thread_flag(TIF_31BIT); \
1da177e4 LT	183	} while (0)
1da177e4 LT	184	#endif /* __s390x__ */
1da177e4	185
146e4b3c MS	186	/*
	187	* An executable for which elf_read_implies_exec() returns TRUE will
	188	* have the READ_IMPLIES_EXEC personality flag set automatically.
	189	*/
	190	#define elf_read_implies_exec(ex, executable_stack) \
	191	({ \
	192	if (current->mm->context.noexec && \
	193	executable_stack != EXSTACK_DISABLE_X) \
	194	disable_noexec(current->mm, current); \
	195	current->mm->context.noexec == 0; \
	196	})
	197
b020632e MS	198	#define ARCH_DLINFO \
	199	do { \
	200	if (vdso_enabled) \
	201	NEW_AUX_ENT(AT_SYSINFO_EHDR, \
	202	(unsigned long)current->mm->context.vdso_base); \
	203	} while (0)
	204
	205	struct linux_binprm;
	206
	207	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	208	int arch_setup_additional_pages(struct linux_binprm *, int);
	209
1da177e4	210	#endif