[dragonfly.git] / sys / cpu / x86_64 / include / elf.h

/*-
 * Copyright (c) 1996-1997 John D. Polstra.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/amd64/include/elf.h,v 1.18 2004/08/03 08:21:48 dfr Exp $
 */

#ifndef _CPU_ELF_H_
#define	_CPU_ELF_H_

/*
 * ELF definitions for the x86_64 architecture.
 */


#ifndef __ELF_WORD_SIZE
#define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
#endif
#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
#include <sys/elf_generic.h>

#define	ELF_ARCH	EM_X86_64

#define	ELF_MACHINE_OK(x) ((x) == EM_X86_64)

/*
 * Auxiliary vector entries for passing information to the interpreter.
 *
 * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
 * but POSIX lays claim to all symbols ending with "_t".
 */
typedef struct {	/* Auxiliary vector entry on initial stack */
	int	a_type;			/* Entry type. */
	union {
		int	a_val;		/* Integer value. */
	} a_un;
} Elf32_Auxinfo;


typedef struct {	/* Auxiliary vector entry on initial stack */
	long	a_type;			/* Entry type. */
	union {
		long	a_val;		/* Integer value. */
		void	*a_ptr;		/* Address. */
		void	(*a_fcn)(void);	/* Function pointer (not used). */
	} a_un;
} Elf64_Auxinfo;

__ElfType(Auxinfo);

/* Values for a_type. */
#define	AT_NULL		0	/* Terminates the vector. */
#define	AT_IGNORE	1	/* Ignored entry. */
#define	AT_EXECFD	2	/* File descriptor of program to load. */
#define	AT_PHDR		3	/* Program header of program already loaded. */
#define	AT_PHENT	4	/* Size of each program header entry. */
#define	AT_PHNUM	5	/* Number of program header entries. */
#define	AT_PAGESZ	6	/* Page size in bytes. */
#define	AT_BASE		7	/* Interpreter's base address. */
#define	AT_FLAGS	8	/* Flags (unused for i386). */
#define	AT_ENTRY	9	/* Where interpreter should transfer control. */

/*
 * The following non-standard values are used for passing information
 * from John Polstra's testbed program to the dynamic linker.  These
 * are expected to go away soon.
 *
 * Unfortunately, these overlap the Linux non-standard values, so they
 * must not be used in the same context.
 */
#define	AT_BRK		10	/* Starting point for sbrk and brk. */
#define	AT_DEBUG	11	/* Debugging level. */

/*
 * The following non-standard values are used in Linux ELF binaries.
 */
#define	AT_NOTELF	10	/* Program is not ELF ?? */
#define	AT_UID		11	/* Real uid. */
#define	AT_EUID		12	/* Effective uid. */
#define	AT_GID		13	/* Real gid. */
#define	AT_EGID		14	/* Effective gid. */

#define	AT_COUNT	15	/* Count of defined aux entry types. */

/*
 * Relocation types.
 */

#define	R_X86_64_NONE	0	/* No relocation. */
#define	R_X86_64_64	1	/* Add 64 bit symbol value. */
#define	R_X86_64_PC32	2	/* PC-relative 32 bit signed sym value. */
#define	R_X86_64_GOT32	3	/* PC-relative 32 bit GOT offset. */
#define	R_X86_64_PLT32	4	/* PC-relative 32 bit PLT offset. */
#define	R_X86_64_COPY	5	/* Copy data from shared object. */
#define	R_X86_64_GLOB_DAT 6	/* Set GOT entry to data address. */
#define	R_X86_64_JMP_SLOT 7	/* Set GOT entry to code address. */
#define	R_X86_64_RELATIVE 8	/* Add load address of shared object. */
#define	R_X86_64_GOTPCREL 9	/* Add 32 bit signed pcrel offset to GOT. */
#define	R_X86_64_32	10	/* Add 32 bit zero extended symbol value */
#define	R_X86_64_32S	11	/* Add 32 bit sign extended symbol value */
#define	R_X86_64_16	12	/* Add 16 bit zero extended symbol value */
#define	R_X86_64_PC16	13	/* Add 16 bit signed extended pc relative symbol value */
#define	R_X86_64_8	14	/* Add 8 bit zero extended symbol value */
#define	R_X86_64_PC8	15	/* Add 8 bit signed extended pc relative symbol value */
#define	R_X86_64_DTPMOD64 16	/* ID of module containing symbol */
#define	R_X86_64_DTPOFF64 17	/* Offset in TLS block */
#define	R_X86_64_TPOFF64 18	/* Offset in static TLS block */
#define	R_X86_64_TLSGD	19	/* PC relative offset to GD GOT entry */
#define	R_X86_64_TLSLD	20	/* PC relative offset to LD GOT entry */
#define	R_X86_64_DTPOFF32 21	/* Offset in TLS block */
#define	R_X86_64_GOTTPOFF 22	/* PC relative offset to IE GOT entry */
#define	R_X86_64_TPOFF32 23	/* Offset in static TLS block */

#define	R_X86_64_COUNT	24	/* Count of defined relocation types. */

/* Define "machine" characteristics */
#if __ELF_WORD_SIZE == 32
#define ELF_TARG_CLASS  ELFCLASS32
#else
#define ELF_TARG_CLASS  ELFCLASS64
#endif
#define	ELF_TARG_DATA	ELFDATA2LSB
#define	ELF_TARG_MACH	EM_X86_64
#define	ELF_TARG_VER	1

#ifdef _KERNEL
/*
 * On the i386 we load the dynamic linker where a userland call
 * to mmap(0, ...) would put it.  The rationale behind this
 * calculation is that it leaves room for the heap to grow to
 * its maximum allowed size.
 */
#define ELF_RTLD_ADDR(vmspace) \
	(round_page((vm_offset_t)(vmspace)->vm_daddr + maxdsiz))
#endif

#endif /* !_CPU_ELF_H_ */
Commit	Line	Data
fc3f9779 SS	1	/*-
	2	* Copyright (c) 1996-1997 John D. Polstra.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	*
	14	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	15	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	16	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	17	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	18	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	19	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	20	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	21	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	22	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	23	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	24	* SUCH DAMAGE.
	25	*
	26	* $FreeBSD: src/sys/amd64/include/elf.h,v 1.18 2004/08/03 08:21:48 dfr Exp $
fc3f9779 SS	27	*/
	28
	29	#ifndef _CPU_ELF_H_
	30	#define _CPU_ELF_H_
	31
	32	/*
c1543a89	33	* ELF definitions for the x86_64 architecture.
fc3f9779 SS	34	*/
	35
	36
	37	#ifndef __ELF_WORD_SIZE
	38	#define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */
	39	#endif
	40	#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
	41	#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
	42	#include <sys/elf_generic.h>
	43
	44	#define ELF_ARCH EM_X86_64
	45
	46	#define ELF_MACHINE_OK(x) ((x) == EM_X86_64)
	47
	48	/*
	49	* Auxiliary vector entries for passing information to the interpreter.
	50	*
	51	* The i386 supplement to the SVR4 ABI specification names this "auxv_t",
	52	* but POSIX lays claim to all symbols ending with "_t".
	53	*/
	54	typedef struct { /* Auxiliary vector entry on initial stack */
	55	int a_type; /* Entry type. */
	56	union {
	57	int a_val; /* Integer value. */
	58	} a_un;
	59	} Elf32_Auxinfo;
	60
	61
	62	typedef struct { /* Auxiliary vector entry on initial stack */
	63	long a_type; /* Entry type. */
	64	union {
	65	long a_val; /* Integer value. */
	66	void a_ptr; / Address. */
	67	void (a_fcn)(void); / Function pointer (not used). */
	68	} a_un;
	69	} Elf64_Auxinfo;
	70
	71	__ElfType(Auxinfo);
	72
	73	/* Values for a_type. */
	74	#define AT_NULL 0 /* Terminates the vector. */
	75	#define AT_IGNORE 1 /* Ignored entry. */
	76	#define AT_EXECFD 2 /* File descriptor of program to load. */
	77	#define AT_PHDR 3 /* Program header of program already loaded. */
	78	#define AT_PHENT 4 /* Size of each program header entry. */
	79	#define AT_PHNUM 5 /* Number of program header entries. */
	80	#define AT_PAGESZ 6 /* Page size in bytes. */
	81	#define AT_BASE 7 /* Interpreter's base address. */
	82	#define AT_FLAGS 8 /* Flags (unused for i386). */
	83	#define AT_ENTRY 9 /* Where interpreter should transfer control. */
	84
	85	/*
	86	* The following non-standard values are used for passing information
	87	* from John Polstra's testbed program to the dynamic linker. These
	88	* are expected to go away soon.
	89	*
	90	* Unfortunately, these overlap the Linux non-standard values, so they
	91	* must not be used in the same context.
	92	*/
	93	#define AT_BRK 10 /* Starting point for sbrk and brk. */
	94	#define AT_DEBUG 11 /* Debugging level. */
	95
	96	/*
	97	* The following non-standard values are used in Linux ELF binaries.
98	*/
99	#define AT_NOTELF 10 /* Program is not ELF ?? */
100	#define AT_UID 11 /* Real uid. */
101	#define AT_EUID 12 /* Effective uid. */
102	#define AT_GID 13 /* Real gid. */
103	#define AT_EGID 14 /* Effective gid. */
104
105	#define AT_COUNT 15 /* Count of defined aux entry types. */
106
107	/*
108	* Relocation types.
109	*/
110
111	#define R_X86_64_NONE 0 /* No relocation. */
112	#define R_X86_64_64 1 /* Add 64 bit symbol value. */
113	#define R_X86_64_PC32 2 /* PC-relative 32 bit signed sym value. */
114	#define R_X86_64_GOT32 3 /* PC-relative 32 bit GOT offset. */
115	#define R_X86_64_PLT32 4 /* PC-relative 32 bit PLT offset. */
116	#define R_X86_64_COPY 5 /* Copy data from shared object. */
117	#define R_X86_64_GLOB_DAT 6 /* Set GOT entry to data address. */
118	#define R_X86_64_JMP_SLOT 7 /* Set GOT entry to code address. */
119	#define R_X86_64_RELATIVE 8 /* Add load address of shared object. */
120	#define R_X86_64_GOTPCREL 9 /* Add 32 bit signed pcrel offset to GOT. */
121	#define R_X86_64_32 10 /* Add 32 bit zero extended symbol value */
122	#define R_X86_64_32S 11 /* Add 32 bit sign extended symbol value */
123	#define R_X86_64_16 12 /* Add 16 bit zero extended symbol value */
124	#define R_X86_64_PC16 13 /* Add 16 bit signed extended pc relative symbol value */
125	#define R_X86_64_8 14 /* Add 8 bit zero extended symbol value */
126	#define R_X86_64_PC8 15 /* Add 8 bit signed extended pc relative symbol value */
127	#define R_X86_64_DTPMOD64 16 /* ID of module containing symbol */
128	#define R_X86_64_DTPOFF64 17 /* Offset in TLS block */
129	#define R_X86_64_TPOFF64 18 /* Offset in static TLS block */
130	#define R_X86_64_TLSGD 19 /* PC relative offset to GD GOT entry */
131	#define R_X86_64_TLSLD 20 /* PC relative offset to LD GOT entry */
132	#define R_X86_64_DTPOFF32 21 /* Offset in TLS block */
133	#define R_X86_64_GOTTPOFF 22 /* PC relative offset to IE GOT entry */
134	#define R_X86_64_TPOFF32 23 /* Offset in static TLS block */
135
136	#define R_X86_64_COUNT 24 /* Count of defined relocation types. */
137
138	/* Define "machine" characteristics */
139	#if __ELF_WORD_SIZE == 32
140	#define ELF_TARG_CLASS ELFCLASS32
141	#else
142	#define ELF_TARG_CLASS ELFCLASS64
143	#endif
144	#define ELF_TARG_DATA ELFDATA2LSB
145	#define ELF_TARG_MACH EM_X86_64
146	#define ELF_TARG_VER 1
147
d7f50089 YY	148	#ifdef _KERNEL
	149	/*
	150	* On the i386 we load the dynamic linker where a userland call
	151	* to mmap(0, ...) would put it. The rationale behind this
	152	* calculation is that it leaves room for the heap to grow to
	153	* its maximum allowed size.
	154	*/
	155	#define ELF_RTLD_ADDR(vmspace) \
	156	(round_page((vm_offset_t)(vmspace)->vm_daddr + maxdsiz))
	157	#endif
	158
fc3f9779	159	#endif /* !_CPU_ELF_H_ */