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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef _LINK_H
     27 #define	_LINK_H
     28 
     29 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     30 
     31 #include <sys/link.h>
     32 
     33 #ifndef _ASM
     34 #include <libelf.h>
     35 #include <sys/types.h>
     36 #include <dlfcn.h>
     37 #endif
     38 
     39 #ifdef	__cplusplus
     40 extern "C" {
     41 #endif
     42 
     43 #ifndef _ASM
     44 /*
     45  * ld support library calls
     46  */
     47 #ifdef __STDC__
     48 extern uint_t	ld_version(uint_t);
     49 extern void	ld_input_done(uint_t *);
     50 
     51 extern void	ld_start(const char *, const Elf32_Half, const char *);
     52 extern void	ld_atexit(int);
     53 extern void	ld_open(const char **, const char **, int *, int, Elf **,
     54 			Elf *, size_t, const Elf_Kind);
     55 extern void	ld_file(const char *, const Elf_Kind, int, Elf *);
     56 extern void	ld_input_section(const char *, Elf32_Shdr **, Elf32_Word,
     57 			Elf_Data *, Elf *, uint_t *);
     58 extern void	ld_section(const char *, Elf32_Shdr *, Elf32_Word,
     59 			Elf_Data *, Elf *);
     60 
     61 #if defined(_LP64) || defined(_LONGLONG_TYPE)
     62 extern void	ld_start64(const char *, const Elf64_Half, const char *);
     63 extern void	ld_atexit64(int);
     64 extern void	ld_open64(const char **, const char **, int *, int, Elf **,
     65 			Elf *, size_t, const Elf_Kind);
     66 extern void	ld_file64(const char *, const Elf_Kind, int, Elf *);
     67 extern void	ld_input_section64(const char *, Elf64_Shdr **, Elf64_Word,
     68 			Elf_Data *, Elf *, uint_t *);
     69 extern void	ld_section64(const char *, Elf64_Shdr *, Elf64_Word,
     70 			Elf_Data *, Elf *);
     71 
     72 #endif /* (defined(_LP64) || defined(_LONGLONG_TYPE) */
     73 #else
     74 extern void	ld_version();
     75 extern void	ld_input_done();
     76 
     77 extern void	ld_start();
     78 extern void	ld_atexit();
     79 extern void	ld_open();
     80 extern void	ld_file();
     81 extern void	ld_input_section();
     82 extern void	ld_section();
     83 
     84 #if defined(_LP64) || defined(_LONGLONG_TYPE)
     85 extern void	ld_start64();
     86 extern void	ld_atexit64();
     87 extern void	ld_open64();
     88 extern void	ld_file64();
     89 extern void	ld_input_section64();
     90 extern void	ld_section64();
     91 
     92 #endif /* (defined(_LP64) || defined(_LONGLONG_TYPE) */
     93 #endif /* __STDC__ */
     94 
     95 /*
     96  * ld_version() version values.
     97  */
     98 #define	LD_SUP_VNONE	0
     99 #define	LD_SUP_VERSION1	1
    100 #define	LD_SUP_VERSION2	2
    101 #define	LD_SUP_VERSION3	3
    102 #define	LD_SUP_VCURRENT	LD_SUP_VERSION3
    103 
    104 /*
    105  * Flags passed to ld support calls.
    106  */
    107 #define	LD_SUP_DERIVED		0x1	/* derived filename */
    108 #define	LD_SUP_INHERITED	0x2	/* file inherited from .so DT_NEEDED */
    109 #define	LD_SUP_EXTRACTED	0x4	/* file extracted from archive */
    110 #endif
    111 
    112 /*
    113  * Runtime link-map identifiers.
    114  */
    115 #define	LM_ID_BASE		0x00
    116 #define	LM_ID_LDSO		0x01
    117 #define	LM_ID_NUM		2
    118 
    119 #define	LM_ID_BRAND		0xfd	/* brand emulation linkmap objs */
    120 #define	LM_ID_NONE		0xfe	/* no link map specified */
    121 #define	LM_ID_NEWLM		0xff	/* create a new link-map */
    122 
    123 /*
    124  * Runtime Link-Edit Auditing.
    125  */
    126 #define	LAV_NONE		0
    127 #define	LAV_VERSION1		1
    128 #define	LAV_VERSION2		2
    129 #define	LAV_VERSION3		3
    130 #define	LAV_VERSION4		4
    131 #define	LAV_CURRENT		LAV_VERSION4
    132 #define	LAV_NUM			5
    133 
    134 /*
    135  * Flags that can be or'd into the la_objopen() return code
    136  */
    137 #define	LA_FLG_BINDTO		0x0001	/* audit symbinds TO this object */
    138 #define	LA_FLG_BINDFROM		0x0002	/* audit symbinding FROM this object */
    139 
    140 /*
    141  * Flags that can be or'd into the 'flags' argument of la_symbind()
    142  */
    143 #define	LA_SYMB_NOPLTENTER	0x0001	/* disable pltenter for this symbol */
    144 #define	LA_SYMB_NOPLTEXIT	0x0002	/* disable pltexit for this symbol */
    145 #define	LA_SYMB_STRUCTCALL	0x0004	/* this function call passes a */
    146 					/*	structure as it's return code */
    147 #define	LA_SYMB_DLSYM		0x0008	/* this symbol bindings is due to */
    148 					/*	a call to dlsym() */
    149 #define	LA_SYMB_ALTVALUE	0x0010	/* alternate symbol binding returned */
    150 					/*	by la_symbind() */
    151 
    152 /*
    153  * Flags that describe the object passed to la_objsearch()
    154  */
    155 #define	LA_SER_ORIG		0x001	/* original (needed) name */
    156 #define	LA_SER_LIBPATH		0x002	/* LD_LIBRARY_PATH entry prepended */
    157 #define	LA_SER_RUNPATH		0x004	/* runpath entry prepended */
    158 #define	LA_SER_CONFIG		0x008	/* configuration entry prepended */
    159 #define	LA_SER_DEFAULT		0x040	/* default path prepended */
    160 #define	LA_SER_SECURE		0x080	/* default (secure) path prepended */
    161 
    162 #define	LA_SER_MASK		0xfff	/* mask of known flags */
    163 
    164 /*
    165  * Flags that describe the la_activity()
    166  */
    167 #define	LA_ACT_CONSISTENT	0x00	/* add/deletion of objects complete */
    168 #define	LA_ACT_ADD		0x01	/* objects being added */
    169 #define	LA_ACT_DELETE		0x02	/* objects being deleted */
    170 
    171 
    172 #ifndef	_KERNEL
    173 #ifndef	_ASM
    174 
    175 #if defined(_LP64)
    176 typedef long	lagreg_t;
    177 #else
    178 typedef int	lagreg_t;
    179 #endif
    180 
    181 struct _la_sparc_regs {
    182 	lagreg_t	lr_rego0;
    183 	lagreg_t	lr_rego1;
    184 	lagreg_t	lr_rego2;
    185 	lagreg_t	lr_rego3;
    186 	lagreg_t	lr_rego4;
    187 	lagreg_t	lr_rego5;
    188 	lagreg_t	lr_rego6;
    189 	lagreg_t	lr_rego7;
    190 };
    191 
    192 #if defined(_LP64)
    193 typedef struct _la_sparc_regs	La_sparcv9_regs;
    194 typedef struct {
    195 	lagreg_t	lr_rsp;
    196 	lagreg_t	lr_rbp;
    197 	lagreg_t	lr_rdi;	    /* arg1 */
    198 	lagreg_t	lr_rsi;	    /* arg2 */
    199 	lagreg_t	lr_rdx;	    /* arg3 */
    200 	lagreg_t	lr_rcx;	    /* arg4 */
    201 	lagreg_t	lr_r8;	    /* arg5 */
    202 	lagreg_t	lr_r9;	    /* arg6 */
    203 } La_amd64_regs;
    204 #else
    205 typedef struct _la_sparc_regs	La_sparcv8_regs;
    206 typedef struct {
    207 	lagreg_t	lr_esp;
    208 	lagreg_t	lr_ebp;
    209 } La_i86_regs;
    210 #endif
    211 
    212 #if	!defined(_SYS_INT_TYPES_H)
    213 #if	defined(_LP64) || defined(_I32LPx)
    214 typedef unsigned long		uintptr_t;
    215 #else
    216 typedef	unsigned int		uintptr_t;
    217 #endif
    218 #endif
    219 
    220 
    221 #ifdef	__STDC__
    222 extern uint_t		la_version(uint_t);
    223 extern void		la_activity(uintptr_t *, uint_t);
    224 extern void		la_preinit(uintptr_t *);
    225 extern char		*la_objsearch(const char *, uintptr_t *, uint_t);
    226 extern uint_t		la_objopen(Link_map *, Lmid_t, uintptr_t *);
    227 extern uint_t		la_objclose(uintptr_t *);
    228 extern int		la_objfilter(uintptr_t *, const char *, uintptr_t *,
    229 				uint_t);
    230 #if	defined(_LP64)
    231 extern uintptr_t	la_amd64_pltenter(Elf64_Sym *, uint_t, uintptr_t *,
    232 				uintptr_t *, La_amd64_regs *,	uint_t *,
    233 				const char *);
    234 extern uintptr_t	la_symbind64(Elf64_Sym *, uint_t, uintptr_t *,
    235 				uintptr_t *, uint_t *, const char *);
    236 extern uintptr_t	la_sparcv9_pltenter(Elf64_Sym *, uint_t, uintptr_t *,
    237 				uintptr_t *, La_sparcv9_regs *,	uint_t *,
    238 				const char *);
    239 extern uintptr_t	la_pltexit64(Elf64_Sym *, uint_t, uintptr_t *,
    240 				uintptr_t *, uintptr_t, const char *);
    241 #else  /* !defined(_LP64) */
    242 extern uintptr_t	la_symbind32(Elf32_Sym *, uint_t, uintptr_t *,
    243 				uintptr_t *, uint_t *);
    244 extern uintptr_t	la_sparcv8_pltenter(Elf32_Sym *, uint_t, uintptr_t *,
    245 				uintptr_t *, La_sparcv8_regs *, uint_t *);
    246 extern uintptr_t	la_i86_pltenter(Elf32_Sym *, uint_t, uintptr_t *,
    247 				uintptr_t *, La_i86_regs *, uint_t *);
    248 extern uintptr_t	la_pltexit(Elf32_Sym *, uint_t, uintptr_t *,
    249 				uintptr_t *, uintptr_t);
    250 #endif /* _LP64 */
    251 #else  /* __STDC__ */
    252 extern uint_t		la_version();
    253 extern void		la_preinit();
    254 extern uint_t		la_objopen();
    255 extern uint_t		la_objclose();
    256 extern int		la_objfilter();
    257 #if	defined(_LP64)
    258 extern uintptr_t	la_sparcv9_pltenter();
    259 extern uintptr_t	la_pltexit64();
    260 extern uintptr_t	la_symbind64();
    261 #else  /* _ILP32 */
    262 extern uintptr_t	la_sparcv8_pltenter();
    263 extern uintptr_t	la_i86_pltenter();
    264 extern uintptr_t	la_pltexit();
    265 extern uintptr_t	la_symbind32();
    266 #endif /* _LP64 */
    267 #endif /* __STDC__ */
    268 
    269 
    270 #endif /* _ASM */
    271 #endif /* _KERNEL */
    272 
    273 #ifdef __cplusplus
    274 }
    275 #endif
    276 
    277 #endif	/* _LINK_H */
    278