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

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Much of this is taken from binutils and GNU libc ...
 */
#ifndef _ASM_ELF_H
#define _ASM_ELF_H

#include <linux/auxvec.h>
#include <linux/fs.h>
#include <uapi/linux/elf.h>

#include <asm/current.h>

/* ELF header e_flags defines. */
/* MIPS architecture level. */
#define EF_MIPS_ARCH_1		0x00000000	/* -mips1 code.	 */
#define EF_MIPS_ARCH_2		0x10000000	/* -mips2 code.	 */
#define EF_MIPS_ARCH_3		0x20000000	/* -mips3 code.	 */
#define EF_MIPS_ARCH_4		0x30000000	/* -mips4 code.	 */
#define EF_MIPS_ARCH_5		0x40000000	/* -mips5 code.	 */
#define EF_MIPS_ARCH_32		0x50000000	/* MIPS32 code.	 */
#define EF_MIPS_ARCH_64		0x60000000	/* MIPS64 code.	 */
#define EF_MIPS_ARCH_32R2	0x70000000	/* MIPS32 R2 code.  */
#define EF_MIPS_ARCH_64R2	0x80000000	/* MIPS64 R2 code.  */

/* The ABI of a file. */
#define EF_MIPS_ABI_O32		0x00001000	/* O32 ABI.  */
#define EF_MIPS_ABI_O64		0x00002000	/* O32 extended for 64 bit.  */

#define PT_MIPS_REGINFO		0x70000000
#define PT_MIPS_RTPROC		0x70000001
#define PT_MIPS_OPTIONS		0x70000002
#define PT_MIPS_ABIFLAGS	0x70000003

/* Flags in the e_flags field of the header */
#define EF_MIPS_NOREORDER	0x00000001
#define EF_MIPS_PIC		0x00000002
#define EF_MIPS_CPIC		0x00000004
#define EF_MIPS_ABI2		0x00000020
#define EF_MIPS_OPTIONS_FIRST	0x00000080
#define EF_MIPS_32BITMODE	0x00000100
#define EF_MIPS_FP64		0x00000200
#define EF_MIPS_NAN2008		0x00000400
#define EF_MIPS_ABI		0x0000f000
#define EF_MIPS_ARCH		0xf0000000

#define DT_MIPS_RLD_VERSION	0x70000001
#define DT_MIPS_TIME_STAMP	0x70000002
#define DT_MIPS_ICHECKSUM	0x70000003
#define DT_MIPS_IVERSION	0x70000004
#define DT_MIPS_FLAGS		0x70000005
	#define RHF_NONE	0x00000000
	#define RHF_HARDWAY	0x00000001
	#define RHF_NOTPOT	0x00000002
	#define RHF_SGI_ONLY	0x00000010
#define DT_MIPS_BASE_ADDRESS	0x70000006
#define DT_MIPS_CONFLICT	0x70000008
#define DT_MIPS_LIBLIST		0x70000009
#define DT_MIPS_LOCAL_GOTNO	0x7000000a
#define DT_MIPS_CONFLICTNO	0x7000000b
#define DT_MIPS_LIBLISTNO	0x70000010
#define DT_MIPS_SYMTABNO	0x70000011
#define DT_MIPS_UNREFEXTNO	0x70000012
#define DT_MIPS_GOTSYM		0x70000013
#define DT_MIPS_HIPAGENO	0x70000014
#define DT_MIPS_RLD_MAP		0x70000016

#define R_MIPS_NONE		0
#define R_MIPS_16		1
#define R_MIPS_32		2
#define R_MIPS_REL32		3
#define R_MIPS_26		4
#define R_MIPS_HI16		5
#define R_MIPS_LO16		6
#define R_MIPS_GPREL16		7
#define R_MIPS_LITERAL		8
#define R_MIPS_GOT16		9
#define R_MIPS_PC16		10
#define R_MIPS_CALL16		11
#define R_MIPS_GPREL32		12
/* The remaining relocs are defined on Irix, although they are not
   in the MIPS ELF ABI.	 */
#define R_MIPS_UNUSED1		13
#define R_MIPS_UNUSED2		14
#define R_MIPS_UNUSED3		15
#define R_MIPS_SHIFT5		16
#define R_MIPS_SHIFT6		17
#define R_MIPS_64		18
#define R_MIPS_GOT_DISP		19
#define R_MIPS_GOT_PAGE		20
#define R_MIPS_GOT_OFST		21
/*
 * The following two relocation types are specified in the MIPS ABI
 * conformance guide version 1.2 but not yet in the psABI.
 */
#define R_MIPS_GOTHI16		22
#define R_MIPS_GOTLO16		23
#define R_MIPS_SUB		24
#define R_MIPS_INSERT_A		25
#define R_MIPS_INSERT_B		26
#define R_MIPS_DELETE		27
#define R_MIPS_HIGHER		28
#define R_MIPS_HIGHEST		29
/*
 * The following two relocation types are specified in the MIPS ABI
 * conformance guide version 1.2 but not yet in the psABI.
 */
#define R_MIPS_CALLHI16		30
#define R_MIPS_CALLLO16		31
/*
 * This range is reserved for vendor specific relocations.
 */
#define R_MIPS_LOVENDOR		100
#define R_MIPS_HIVENDOR		127

#define SHN_MIPS_ACCOMON	0xff00		/* Allocated common symbols */
#define SHN_MIPS_TEXT		0xff01		/* Allocated test symbols.  */
#define SHN_MIPS_DATA		0xff02		/* Allocated data symbols.  */
#define SHN_MIPS_SCOMMON	0xff03		/* Small common symbols */
#define SHN_MIPS_SUNDEFINED	0xff04		/* Small undefined symbols */

#define SHT_MIPS_LIST		0x70000000
#define SHT_MIPS_CONFLICT	0x70000002
#define SHT_MIPS_GPTAB		0x70000003
#define SHT_MIPS_UCODE		0x70000004
#define SHT_MIPS_DEBUG		0x70000005
#define SHT_MIPS_REGINFO	0x70000006
#define SHT_MIPS_PACKAGE	0x70000007
#define SHT_MIPS_PACKSYM	0x70000008
#define SHT_MIPS_RELD		0x70000009
#define SHT_MIPS_IFACE		0x7000000b
#define SHT_MIPS_CONTENT	0x7000000c
#define SHT_MIPS_OPTIONS	0x7000000d
#define SHT_MIPS_SHDR		0x70000010
#define SHT_MIPS_FDESC		0x70000011
#define SHT_MIPS_EXTSYM		0x70000012
#define SHT_MIPS_DENSE		0x70000013
#define SHT_MIPS_PDESC		0x70000014
#define SHT_MIPS_LOCSYM		0x70000015
#define SHT_MIPS_AUXSYM		0x70000016
#define SHT_MIPS_OPTSYM		0x70000017
#define SHT_MIPS_LOCSTR		0x70000018
#define SHT_MIPS_LINE		0x70000019
#define SHT_MIPS_RFDESC		0x7000001a
#define SHT_MIPS_DELTASYM	0x7000001b
#define SHT_MIPS_DELTAINST	0x7000001c
#define SHT_MIPS_DELTACLASS	0x7000001d
#define SHT_MIPS_DWARF		0x7000001e
#define SHT_MIPS_DELTADECL	0x7000001f
#define SHT_MIPS_SYMBOL_LIB	0x70000020
#define SHT_MIPS_EVENTS		0x70000021
#define SHT_MIPS_TRANSLATE	0x70000022
#define SHT_MIPS_PIXIE		0x70000023
#define SHT_MIPS_XLATE		0x70000024
#define SHT_MIPS_XLATE_DEBUG	0x70000025
#define SHT_MIPS_WHIRL		0x70000026
#define SHT_MIPS_EH_REGION	0x70000027
#define SHT_MIPS_XLATE_OLD	0x70000028
#define SHT_MIPS_PDR_EXCEPTION	0x70000029

#define SHF_MIPS_GPREL		0x10000000
#define SHF_MIPS_MERGE		0x20000000
#define SHF_MIPS_ADDR		0x40000000
#define SHF_MIPS_STRING		0x80000000
#define SHF_MIPS_NOSTRIP	0x08000000
#define SHF_MIPS_LOCAL		0x04000000
#define SHF_MIPS_NAMES		0x02000000
#define SHF_MIPS_NODUPES	0x01000000

#ifndef ELF_ARCH
/* ELF register definitions */
#define ELF_NGREG	45
#define ELF_NFPREG	33

typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef double elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

struct mips_elf_abiflags_v0 {
	uint16_t version;	/* Version of flags structure */
	uint8_t isa_level;	/* The level of the ISA: 1-5, 32, 64 */
	uint8_t isa_rev;	/* The revision of ISA: 0 for MIPS V and below,
				   1-n otherwise */
	uint8_t gpr_size;	/* The size of general purpose registers */
	uint8_t cpr1_size;	/* The size of co-processor 1 registers */
	uint8_t cpr2_size;	/* The size of co-processor 2 registers */
	uint8_t fp_abi;		/* The floating-point ABI */
	uint32_t isa_ext;	/* Mask of processor-specific extensions */
	uint32_t ases;		/* Mask of ASEs used */
	uint32_t flags1;	/* Mask of general flags */
	uint32_t flags2;
};

#define MIPS_ABI_FP_ANY		0	/* FP ABI doesn't matter */
#define MIPS_ABI_FP_DOUBLE	1	/* -mdouble-float */
#define MIPS_ABI_FP_SINGLE	2	/* -msingle-float */
#define MIPS_ABI_FP_SOFT	3	/* -msoft-float */
#define MIPS_ABI_FP_OLD_64	4	/* -mips32r2 -mfp64 */
#define MIPS_ABI_FP_XX		5	/* -mfpxx */
#define MIPS_ABI_FP_64		6	/* -mips32r2 -mfp64 */
#define MIPS_ABI_FP_64A		7	/* -mips32r2 -mfp64 -mno-odd-spreg */

#ifdef CONFIG_32BIT

/*
 * In order to be sure that we don't attempt to execute an O32 binary which
 * requires 64 bit FP (FR=1) on a system which does not support it we refuse
 * to execute any binary which has bits specified by the following macro set
 * in its ELF header flags.
 */
#ifdef CONFIG_MIPS_O32_FP64_SUPPORT
# define __MIPS_O32_FP64_MUST_BE_ZERO	0
#else
# define __MIPS_O32_FP64_MUST_BE_ZERO	EF_MIPS_FP64
#endif

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(hdr)						\
({									\
	int __res = 1;							\
	struct elfhdr *__h = (hdr);					\
									\
	if (!mips_elf_check_machine(__h))				\
		__res = 0;						\
	if (__h->e_ident[EI_CLASS] != ELFCLASS32)			\
		__res = 0;						\
	if ((__h->e_flags & EF_MIPS_ABI2) != 0)				\
		__res = 0;						\
	if (((__h->e_flags & EF_MIPS_ABI) != 0) &&			\
	    ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))		\
		__res = 0;						\
	if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO)		\
		__res = 0;						\
									\
	__res;								\
})

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32

#endif /* CONFIG_32BIT */

#ifdef CONFIG_64BIT
/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(hdr)						\
({									\
	int __res = 1;							\
	struct elfhdr *__h = (hdr);					\
									\
	if (!mips_elf_check_machine(__h))				\
		__res = 0;						\
	if (__h->e_ident[EI_CLASS] != ELFCLASS64)			\
		__res = 0;						\
									\
	__res;								\
})

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

#endif /* CONFIG_64BIT */

/*
 * These are used to set parameters in the core dumps.
 */
#ifdef __MIPSEB__
#define ELF_DATA	ELFDATA2MSB
#elif defined(__MIPSEL__)
#define ELF_DATA	ELFDATA2LSB
#endif
#define ELF_ARCH	EM_MIPS

#endif /* !defined(ELF_ARCH) */

#define mips_elf_check_machine(x) ((x)->e_machine == EM_MIPS)

#define vmcore_elf32_check_arch mips_elf_check_machine
#define vmcore_elf64_check_arch mips_elf_check_machine

struct mips_abi;

extern struct mips_abi mips_abi;
extern struct mips_abi mips_abi_32;
extern struct mips_abi mips_abi_n32;

#ifdef CONFIG_32BIT

#define SET_PERSONALITY2(ex, state)					\
do {									\
	if (personality(current->personality) != PER_LINUX)		\
		set_personality(PER_LINUX);				\
									\
	clear_thread_flag(TIF_HYBRID_FPREGS);				\
	set_thread_flag(TIF_32BIT_FPREGS);				\
									\
	mips_set_personality_fp(state);					\
									\
	current->thread.abi = &mips_abi;				\
									\
	mips_set_personality_nan(state);				\
} while (0)

#endif /* CONFIG_32BIT */

#ifdef CONFIG_64BIT

#ifdef CONFIG_MIPS32_N32
#define __SET_PERSONALITY32_N32()					\
	do {								\
		set_thread_flag(TIF_32BIT_ADDR);			\
		current->thread.abi = &mips_abi_n32;			\
	} while (0)
#else
#define __SET_PERSONALITY32_N32()					\
	do { } while (0)
#endif

#ifdef CONFIG_MIPS32_O32
#define __SET_PERSONALITY32_O32(ex, state)				\
	do {								\
		set_thread_flag(TIF_32BIT_REGS);			\
		set_thread_flag(TIF_32BIT_ADDR);			\
		clear_thread_flag(TIF_HYBRID_FPREGS);			\
		set_thread_flag(TIF_32BIT_FPREGS);			\
									\
		mips_set_personality_fp(state);				\
									\
		current->thread.abi = &mips_abi_32;			\
	} while (0)
#else
#define __SET_PERSONALITY32_O32(ex, state)				\
	do { } while (0)
#endif

#ifdef CONFIG_MIPS32_COMPAT
#define __SET_PERSONALITY32(ex, state)					\
do {									\
	if ((((ex).e_flags & EF_MIPS_ABI2) != 0) &&			\
	     ((ex).e_flags & EF_MIPS_ABI) == 0)				\
		__SET_PERSONALITY32_N32();				\
	else								\
		__SET_PERSONALITY32_O32(ex, state);			\
} while (0)
#else
#define __SET_PERSONALITY32(ex, state) do { } while (0)
#endif

#define SET_PERSONALITY2(ex, state)					\
do {									\
	unsigned int p;							\
									\
	clear_thread_flag(TIF_32BIT_REGS);				\
	clear_thread_flag(TIF_32BIT_FPREGS);				\
	clear_thread_flag(TIF_HYBRID_FPREGS);				\
	clear_thread_flag(TIF_32BIT_ADDR);				\
									\
	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)			\
		__SET_PERSONALITY32(ex, state);				\
	else								\
		current->thread.abi = &mips_abi;			\
									\
	mips_set_personality_nan(state);				\
									\
	p = personality(current->personality);				\
	if (p != PER_LINUX32 && p != PER_LINUX)				\
		set_personality(PER_LINUX);				\
} while (0)

#endif /* CONFIG_64BIT */

#define CORE_DUMP_USE_REGSET
#define ELF_EXEC_PAGESIZE	PAGE_SIZE

/* This yields a mask that user programs can use to figure out what
   instruction set this cpu supports.  This could be done in userspace,
   but it's not easy, and we've already done it here.  */

#define ELF_HWCAP	(elf_hwcap)
extern unsigned int elf_hwcap;
#include <asm/hwcap.h>

/*
 * 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.
 */

#define ELF_PLATFORM  __elf_platform
extern const char *__elf_platform;

/*
 * See comments in asm-alpha/elf.h, this is the same thing
 * on the MIPS.
 */
#define ELF_PLAT_INIT(_r, load_addr)	do { \
	_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;	\
	_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;	\
	_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;	\
	_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;	\
	_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;	\
	_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;	\
	_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;	\
	_r->regs[30] = _r->regs[31] = 0;				\
} while (0)

/* 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.	*/

#ifndef ELF_ET_DYN_BASE
#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
#endif

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

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

struct arch_elf_state {
	int nan_2008;
	int fp_abi;
	int interp_fp_abi;
	int overall_fp_mode;
};

#define MIPS_ABI_FP_UNKNOWN	(-1)	/* Unknown FP ABI (kernel internal) */

#define INIT_ARCH_ELF_STATE {			\
	.nan_2008 = -1,				\
	.fp_abi = MIPS_ABI_FP_UNKNOWN,		\
	.interp_fp_abi = MIPS_ABI_FP_UNKNOWN,	\
	.overall_fp_mode = -1,			\
}

/* Whether to accept legacy-NaN and 2008-NaN user binaries.  */
extern bool mips_use_nan_legacy;
extern bool mips_use_nan_2008;

extern int arch_elf_pt_proc(void *ehdr, void *phdr, struct file *elf,
			    bool is_interp, struct arch_elf_state *state);

extern int arch_check_elf(void *ehdr, bool has_interpreter, void *interp_ehdr,
			  struct arch_elf_state *state);

extern void mips_set_personality_nan(struct arch_elf_state *state);
extern void mips_set_personality_fp(struct arch_elf_state *state);

#endif /* _ASM_ELF_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
f039b5d3 RB	5	*
f039b5d3 RB	6	* Much of this is taken from binutils and GNU libc ...
1da177e4 LT	7	*/
	8	#ifndef _ASM_ELF_H
	9	#define _ASM_ELF_H
	10
ebb5e78c	11	#include <linux/auxvec.h>
90cee759 PB	12	#include <linux/fs.h>
90cee759 PB	13	#include <uapi/linux/elf.h>
1da177e4	14
9b26616c MR	15	#include <asm/current.h>
9b26616c MR	16
1da177e4 LT	17	/* ELF header e_flags defines. */
1da177e4 LT	18	/* MIPS architecture level. */
70342287 RB	19	#define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
	20	#define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
	21	#define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
	22	#define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
	23	#define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
	24	#define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */
	25	#define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
97fb5de1 RB	26	#define EF_MIPS_ARCH_32R2 0x70000000 /* MIPS32 R2 code. */
97fb5de1 RB	27	#define EF_MIPS_ARCH_64R2 0x80000000 /* MIPS64 R2 code. */
1da177e4 LT	28
	29	/* The ABI of a file. */
	30	#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
	31	#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
	32
	33	#define PT_MIPS_REGINFO 0x70000000
	34	#define PT_MIPS_RTPROC 0x70000001
	35	#define PT_MIPS_OPTIONS 0x70000002
6cd96229	36	#define PT_MIPS_ABIFLAGS 0x70000003
1da177e4 LT	37
	38	/* Flags in the e_flags field of the header */
	39	#define EF_MIPS_NOREORDER 0x00000001
	40	#define EF_MIPS_PIC 0x00000002
	41	#define EF_MIPS_CPIC 0x00000004
	42	#define EF_MIPS_ABI2 0x00000020
	43	#define EF_MIPS_OPTIONS_FIRST 0x00000080
	44	#define EF_MIPS_32BITMODE 0x00000100
597ce172	45	#define EF_MIPS_FP64 0x00000200
2b5e869e	46	#define EF_MIPS_NAN2008 0x00000400
1da177e4 LT	47	#define EF_MIPS_ABI 0x0000f000
	48	#define EF_MIPS_ARCH 0xf0000000
	49
	50	#define DT_MIPS_RLD_VERSION 0x70000001
	51	#define DT_MIPS_TIME_STAMP 0x70000002
	52	#define DT_MIPS_ICHECKSUM 0x70000003
	53	#define DT_MIPS_IVERSION 0x70000004
	54	#define DT_MIPS_FLAGS 0x70000005
	55	#define RHF_NONE 0x00000000
	56	#define RHF_HARDWAY 0x00000001
	57	#define RHF_NOTPOT 0x00000002
	58	#define RHF_SGI_ONLY 0x00000010
	59	#define DT_MIPS_BASE_ADDRESS 0x70000006
	60	#define DT_MIPS_CONFLICT 0x70000008
	61	#define DT_MIPS_LIBLIST 0x70000009
	62	#define DT_MIPS_LOCAL_GOTNO 0x7000000a
	63	#define DT_MIPS_CONFLICTNO 0x7000000b
	64	#define DT_MIPS_LIBLISTNO 0x70000010
	65	#define DT_MIPS_SYMTABNO 0x70000011
	66	#define DT_MIPS_UNREFEXTNO 0x70000012
	67	#define DT_MIPS_GOTSYM 0x70000013
	68	#define DT_MIPS_HIPAGENO 0x70000014
	69	#define DT_MIPS_RLD_MAP 0x70000016
	70
	71	#define R_MIPS_NONE 0
	72	#define R_MIPS_16 1
	73	#define R_MIPS_32 2
	74	#define R_MIPS_REL32 3
	75	#define R_MIPS_26 4
	76	#define R_MIPS_HI16 5
	77	#define R_MIPS_LO16 6
	78	#define R_MIPS_GPREL16 7
	79	#define R_MIPS_LITERAL 8
	80	#define R_MIPS_GOT16 9
	81	#define R_MIPS_PC16 10
	82	#define R_MIPS_CALL16 11
	83	#define R_MIPS_GPREL32 12
	84	/* The remaining relocs are defined on Irix, although they are not
70342287	85	in the MIPS ELF ABI. */
1da177e4 LT	86	#define R_MIPS_UNUSED1 13
	87	#define R_MIPS_UNUSED2 14
	88	#define R_MIPS_UNUSED3 15
	89	#define R_MIPS_SHIFT5 16
	90	#define R_MIPS_SHIFT6 17
	91	#define R_MIPS_64 18
	92	#define R_MIPS_GOT_DISP 19
	93	#define R_MIPS_GOT_PAGE 20
	94	#define R_MIPS_GOT_OFST 21
	95	/*
	96	* The following two relocation types are specified in the MIPS ABI
	97	* conformance guide version 1.2 but not yet in the psABI.
	98	*/
	99	#define R_MIPS_GOTHI16 22
	100	#define R_MIPS_GOTLO16 23
	101	#define R_MIPS_SUB 24
	102	#define R_MIPS_INSERT_A 25
	103	#define R_MIPS_INSERT_B 26
	104	#define R_MIPS_DELETE 27
	105	#define R_MIPS_HIGHER 28
	106	#define R_MIPS_HIGHEST 29
	107	/*
	108	* The following two relocation types are specified in the MIPS ABI
	109	* conformance guide version 1.2 but not yet in the psABI.
	110	*/
	111	#define R_MIPS_CALLHI16 30
	112	#define R_MIPS_CALLLO16 31
	113	/*
	114	* This range is reserved for vendor specific relocations.
	115	*/
	116	#define R_MIPS_LOVENDOR 100
	117	#define R_MIPS_HIVENDOR 127
	118
f039b5d3 RB	119	#define SHN_MIPS_ACCOMON 0xff00 /* Allocated common symbols */
	120	#define SHN_MIPS_TEXT 0xff01 /* Allocated test symbols. */
	121	#define SHN_MIPS_DATA 0xff02 /* Allocated data symbols. */
	122	#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
	123	#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
1da177e4 LT	124
	125	#define SHT_MIPS_LIST 0x70000000
	126	#define SHT_MIPS_CONFLICT 0x70000002
	127	#define SHT_MIPS_GPTAB 0x70000003
	128	#define SHT_MIPS_UCODE 0x70000004
84ada9f8 RB	129	#define SHT_MIPS_DEBUG 0x70000005
	130	#define SHT_MIPS_REGINFO 0x70000006
	131	#define SHT_MIPS_PACKAGE 0x70000007
	132	#define SHT_MIPS_PACKSYM 0x70000008
	133	#define SHT_MIPS_RELD 0x70000009
	134	#define SHT_MIPS_IFACE 0x7000000b
	135	#define SHT_MIPS_CONTENT 0x7000000c
	136	#define SHT_MIPS_OPTIONS 0x7000000d
	137	#define SHT_MIPS_SHDR 0x70000010
	138	#define SHT_MIPS_FDESC 0x70000011
	139	#define SHT_MIPS_EXTSYM 0x70000012
	140	#define SHT_MIPS_DENSE 0x70000013
	141	#define SHT_MIPS_PDESC 0x70000014
	142	#define SHT_MIPS_LOCSYM 0x70000015
	143	#define SHT_MIPS_AUXSYM 0x70000016
	144	#define SHT_MIPS_OPTSYM 0x70000017
	145	#define SHT_MIPS_LOCSTR 0x70000018
	146	#define SHT_MIPS_LINE 0x70000019
	147	#define SHT_MIPS_RFDESC 0x7000001a
	148	#define SHT_MIPS_DELTASYM 0x7000001b
	149	#define SHT_MIPS_DELTAINST 0x7000001c
	150	#define SHT_MIPS_DELTACLASS 0x7000001d
	151	#define SHT_MIPS_DWARF 0x7000001e
	152	#define SHT_MIPS_DELTADECL 0x7000001f
	153	#define SHT_MIPS_SYMBOL_LIB 0x70000020
	154	#define SHT_MIPS_EVENTS 0x70000021
	155	#define SHT_MIPS_TRANSLATE 0x70000022
	156	#define SHT_MIPS_PIXIE 0x70000023
	157	#define SHT_MIPS_XLATE 0x70000024
	158	#define SHT_MIPS_XLATE_DEBUG 0x70000025
	159	#define SHT_MIPS_WHIRL 0x70000026
	160	#define SHT_MIPS_EH_REGION 0x70000027
	161	#define SHT_MIPS_XLATE_OLD 0x70000028
	162	#define SHT_MIPS_PDR_EXCEPTION 0x70000029
1da177e4	163
84ada9f8 RB	164	#define SHF_MIPS_GPREL 0x10000000
	165	#define SHF_MIPS_MERGE 0x20000000
	166	#define SHF_MIPS_ADDR 0x40000000
	167	#define SHF_MIPS_STRING 0x80000000
	168	#define SHF_MIPS_NOSTRIP 0x08000000
	169	#define SHF_MIPS_LOCAL 0x04000000
	170	#define SHF_MIPS_NAMES 0x02000000
	171	#define SHF_MIPS_NODUPES 0x01000000
1da177e4 LT	172
	173	#ifndef ELF_ARCH
	174	/* ELF register definitions */
	175	#define ELF_NGREG 45
	176	#define ELF_NFPREG 33
	177
	178	typedef unsigned long elf_greg_t;
	179	typedef elf_greg_t elf_gregset_t[ELF_NGREG];
	180
	181	typedef double elf_fpreg_t;
	182	typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
	183
6cd96229 PB	184	struct mips_elf_abiflags_v0 {
	185	uint16_t version; /* Version of flags structure */
	186	uint8_t isa_level; /* The level of the ISA: 1-5, 32, 64 */
	187	uint8_t isa_rev; /* The revision of ISA: 0 for MIPS V and below,
	188	1-n otherwise */
	189	uint8_t gpr_size; /* The size of general purpose registers */
	190	uint8_t cpr1_size; /* The size of co-processor 1 registers */
	191	uint8_t cpr2_size; /* The size of co-processor 2 registers */
	192	uint8_t fp_abi; /* The floating-point ABI */
	193	uint32_t isa_ext; /* Mask of processor-specific extensions */
	194	uint32_t ases; /* Mask of ASEs used */
	195	uint32_t flags1; /* Mask of general flags */
	196	uint32_t flags2;
	197	};
	198
	199	#define MIPS_ABI_FP_ANY 0 /* FP ABI doesn't matter */
	200	#define MIPS_ABI_FP_DOUBLE 1 /* -mdouble-float */
	201	#define MIPS_ABI_FP_SINGLE 2 /* -msingle-float */
	202	#define MIPS_ABI_FP_SOFT 3 /* -msoft-float */
	203	#define MIPS_ABI_FP_OLD_64 4 /* -mips32r2 -mfp64 */
	204	#define MIPS_ABI_FP_XX 5 /* -mfpxx */
	205	#define MIPS_ABI_FP_64 6 /* -mips32r2 -mfp64 */
	206	#define MIPS_ABI_FP_64A 7 /* -mips32r2 -mfp64 -mno-odd-spreg */
	207
875d43e7	208	#ifdef CONFIG_32BIT
1da177e4	209
597ce172 PB	210	/*
	211	* In order to be sure that we don't attempt to execute an O32 binary which
	212	* requires 64 bit FP (FR=1) on a system which does not support it we refuse
	213	* to execute any binary which has bits specified by the following macro set
	214	* in its ELF header flags.
	215	*/
	216	#ifdef CONFIG_MIPS_O32_FP64_SUPPORT
	217	# define __MIPS_O32_FP64_MUST_BE_ZERO 0
	218	#else
	219	# define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64
	220	#endif
	221
1da177e4 LT	222	/*
	223	* This is used to ensure we don't load something for the wrong architecture.
	224	*/
	225	#define elf_check_arch(hdr) \
	226	({ \
	227	int __res = 1; \
	228	struct elfhdr *__h = (hdr); \
	229	\
f4d3d504	230	if (!mips_elf_check_machine(__h)) \
1da177e4 LT	231	__res = 0; \
	232	if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
	233	__res = 0; \
	234	if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
	235	__res = 0; \
	236	if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
	237	((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
597ce172 PB	238	__res = 0; \
597ce172 PB	239	if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \
1da177e4 LT	240	__res = 0; \
	241	\
	242	__res; \
	243	})
	244
	245	/*
	246	* These are used to set parameters in the core dumps.
	247	*/
	248	#define ELF_CLASS ELFCLASS32
	249
875d43e7	250	#endif /* CONFIG_32BIT */
1da177e4	251
875d43e7	252	#ifdef CONFIG_64BIT
1da177e4 LT	253	/*
	254	* This is used to ensure we don't load something for the wrong architecture.
	255	*/
	256	#define elf_check_arch(hdr) \
	257	({ \
	258	int __res = 1; \
	259	struct elfhdr *__h = (hdr); \
	260	\
f4d3d504	261	if (!mips_elf_check_machine(__h)) \
1da177e4	262	__res = 0; \
70342287	263	if (__h->e_ident[EI_CLASS] != ELFCLASS64) \
1da177e4 LT	264	__res = 0; \
	265	\
	266	__res; \
	267	})
	268
	269	/*
	270	* These are used to set parameters in the core dumps.
	271	*/
	272	#define ELF_CLASS ELFCLASS64
	273
875d43e7	274	#endif /* CONFIG_64BIT */
1da177e4 LT	275
	276	/*
	277	* These are used to set parameters in the core dumps.
	278	*/
	279	#ifdef __MIPSEB__
	280	#define ELF_DATA ELFDATA2MSB
08d9d1c4	281	#elif defined(__MIPSEL__)
1da177e4 LT	282	#define ELF_DATA ELFDATA2LSB
	283	#endif
	284	#define ELF_ARCH EM_MIPS
	285
	286	#endif /* !defined(ELF_ARCH) */
	287
f4d3d504 DW	288	#define mips_elf_check_machine(x) ((x)->e_machine == EM_MIPS)
	289
	290	#define vmcore_elf32_check_arch mips_elf_check_machine
	291	#define vmcore_elf64_check_arch mips_elf_check_machine
	292
e50c0a8f RB	293	struct mips_abi;
	294
	295	extern struct mips_abi mips_abi;
	296	extern struct mips_abi mips_abi_32;
	297	extern struct mips_abi mips_abi_n32;
	298
875d43e7	299	#ifdef CONFIG_32BIT
1da177e4	300
90cee759	301	#define SET_PERSONALITY2(ex, state) \
e50c0a8f	302	do { \
1c0d52b9 DD	303	if (personality(current->personality) != PER_LINUX) \
1c0d52b9 DD	304	set_personality(PER_LINUX); \
e50c0a8f	305	\
48f8eaee MC	306	clear_thread_flag(TIF_HYBRID_FPREGS); \
	307	set_thread_flag(TIF_32BIT_FPREGS); \
	308	\
90cee759 PB	309	mips_set_personality_fp(state); \
90cee759 PB	310	\
e50c0a8f	311	current->thread.abi = &mips_abi; \
9b26616c	312	\
2b5e869e	313	mips_set_personality_nan(state); \
1da177e4 LT	314	} while (0)
1da177e4 LT	315
875d43e7	316	#endif /* CONFIG_32BIT */
1da177e4	317
875d43e7	318	#ifdef CONFIG_64BIT
1da177e4	319
e50c0a8f RB	320	#ifdef CONFIG_MIPS32_N32
	321	#define __SET_PERSONALITY32_N32() \
	322	do { \
293c5bd1	323	set_thread_flag(TIF_32BIT_ADDR); \
e50c0a8f RB	324	current->thread.abi = &mips_abi_n32; \
	325	} while (0)
	326	#else
	327	#define __SET_PERSONALITY32_N32() \
	328	do { } while (0)
	329	#endif
	330
	331	#ifdef CONFIG_MIPS32_O32
90cee759	332	#define __SET_PERSONALITY32_O32(ex, state) \
e50c0a8f	333	do { \
293c5bd1 RB	334	set_thread_flag(TIF_32BIT_REGS); \
293c5bd1 RB	335	set_thread_flag(TIF_32BIT_ADDR); \
48f8eaee MC	336	clear_thread_flag(TIF_HYBRID_FPREGS); \
48f8eaee MC	337	set_thread_flag(TIF_32BIT_FPREGS); \
597ce172	338	\
90cee759	339	mips_set_personality_fp(state); \
597ce172	340	\
e50c0a8f RB	341	current->thread.abi = &mips_abi_32; \
	342	} while (0)
	343	#else
90cee759	344	#define __SET_PERSONALITY32_O32(ex, state) \
e50c0a8f RB	345	do { } while (0)
	346	#endif
	347
	348	#ifdef CONFIG_MIPS32_COMPAT
90cee759	349	#define __SET_PERSONALITY32(ex, state) \
e50c0a8f RB	350	do { \
	351	if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
	352	((ex).e_flags & EF_MIPS_ABI) == 0) \
	353	__SET_PERSONALITY32_N32(); \
	354	else \
90cee759	355	__SET_PERSONALITY32_O32(ex, state); \
e50c0a8f RB	356	} while (0)
e50c0a8f RB	357	#else
90cee759	358	#define __SET_PERSONALITY32(ex, state) do { } while (0)
e50c0a8f RB	359	#endif
e50c0a8f RB	360
90cee759	361	#define SET_PERSONALITY2(ex, state) \
e50c0a8f	362	do { \
1c0d52b9 DD	363	unsigned int p; \
1c0d52b9 DD	364	\
293c5bd1	365	clear_thread_flag(TIF_32BIT_REGS); \
597ce172	366	clear_thread_flag(TIF_32BIT_FPREGS); \
4227a2d4	367	clear_thread_flag(TIF_HYBRID_FPREGS); \
293c5bd1 RB	368	clear_thread_flag(TIF_32BIT_ADDR); \
293c5bd1 RB	369	\
e50c0a8f	370	if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
90cee759	371	__SET_PERSONALITY32(ex, state); \
293c5bd1	372	else \
e50c0a8f	373	current->thread.abi = &mips_abi; \
e50c0a8f	374	\
2b5e869e	375	mips_set_personality_nan(state); \
9b26616c	376	\
1c0d52b9 DD	377	p = personality(current->personality); \
1c0d52b9 DD	378	if (p != PER_LINUX32 && p != PER_LINUX) \
e50c0a8f	379	set_personality(PER_LINUX); \
1da177e4 LT	380	} while (0)
1da177e4 LT	381
875d43e7	382	#endif /* CONFIG_64BIT */
1da177e4	383
6a9c001b	384	#define CORE_DUMP_USE_REGSET
1da177e4 LT	385	#define ELF_EXEC_PAGESIZE PAGE_SIZE
	386
	387	/* This yields a mask that user programs can use to figure out what
	388	instruction set this cpu supports. This could be done in userspace,
	389	but it's not easy, and we've already done it here. */
	390
e14f1db7 PB	391	#define ELF_HWCAP (elf_hwcap)
	392	extern unsigned int elf_hwcap;
	393	#include <asm/hwcap.h>
1da177e4	394
874fd3b5 DD	395	/*
874fd3b5 DD	396	* This yields a string that ld.so will use to load implementation
70342287	397	* specific libraries for optimization. This is more specific in
874fd3b5 DD	398	* intent than poking at uname or /proc/cpuinfo.
874fd3b5 DD	399	*/
1da177e4	400
874fd3b5 DD	401	#define ELF_PLATFORM __elf_platform
874fd3b5 DD	402	extern const char *__elf_platform;
1da177e4 LT	403
	404	/*
	405	* See comments in asm-alpha/elf.h, this is the same thing
	406	* on the MIPS.
	407	*/
	408	#define ELF_PLAT_INIT(_r, load_addr) do { \
	409	_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
	410	_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
	411	_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
	412	_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
	413	_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
	414	_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
	415	_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
	416	_r->regs[30] = _r->regs[31] = 0; \
	417	} while (0)
	418
	419	/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
	420	use of this is to invoke "./ld.so someprog" to test out a new version of
70342287 RB	421	the loader. We need to make sure that it is out of the way of the program
70342287 RB	422	that it will "exec", and that there is sufficient room for the brk. */
1da177e4 LT	423
1da177e4 LT	424	#ifndef ELF_ET_DYN_BASE
70342287	425	#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
1da177e4 LT	426	#endif
1da177e4 LT	427
ebb5e78c AS	428	#define ARCH_DLINFO \
	429	do { \
	430	NEW_AUX_ENT(AT_SYSINFO_EHDR, \
	431	(unsigned long)current->mm->context.vdso); \
	432	} while (0)
	433
c52d0d30 DD	434	#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
	435	struct linux_binprm;
	436	extern int arch_setup_additional_pages(struct linux_binprm *bprm,
	437	int uses_interp);
652b14aa	438
90cee759	439	struct arch_elf_state {
2b5e869e	440	int nan_2008;
90cee759 PB	441	int fp_abi;
90cee759 PB	442	int interp_fp_abi;
46490b57	443	int overall_fp_mode;
90cee759 PB	444	};
90cee759 PB	445
46490b57 MC	446	#define MIPS_ABI_FP_UNKNOWN (-1) /* Unknown FP ABI (kernel internal) */
46490b57 MC	447
90cee759	448	#define INIT_ARCH_ELF_STATE { \
2b5e869e	449	.nan_2008 = -1, \
46490b57 MC	450	.fp_abi = MIPS_ABI_FP_UNKNOWN, \
	451	.interp_fp_abi = MIPS_ABI_FP_UNKNOWN, \
	452	.overall_fp_mode = -1, \
90cee759 PB	453	}
90cee759 PB	454
503943e0 MR	455	/* Whether to accept legacy-NaN and 2008-NaN user binaries. */
	456	extern bool mips_use_nan_legacy;
	457	extern bool mips_use_nan_2008;
	458
90cee759 PB	459	extern int arch_elf_pt_proc(void ehdr, void phdr, struct file *elf,
	460	bool is_interp, struct arch_elf_state *state);
	461
eb4bc076	462	extern int arch_check_elf(void ehdr, bool has_interpreter, void interp_ehdr,
90cee759 PB	463	struct arch_elf_state *state);
90cee759 PB	464
2b5e869e	465	extern void mips_set_personality_nan(struct arch_elf_state *state);
90cee759 PB	466	extern void mips_set_personality_fp(struct arch_elf_state *state);
90cee759 PB	467
1da177e4	468	#endif /* _ASM_ELF_H */