xref: /titanic_51/usr/src/head/link.h (revision c9d6cd77e4180c3831afde367c7eb129e72f0b2c)
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 2007 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_BRAND		0x02	/* marks branded objs in rd_loadobj_t */
118  
119  #define	LM_ID_NUM		3
120  
121  
122  #define	LM_ID_NEWLM		0xff	/* create a new link-map */
123  
124  /*
125   * Runtime Link-Edit Auditing.
126   */
127  #define	LAV_NONE		0
128  #define	LAV_VERSION1		1
129  #define	LAV_VERSION2		2
130  #define	LAV_VERSION3		3
131  #define	LAV_VERSION4		4
132  #define	LAV_CURRENT		LAV_VERSION4
133  #define	LAV_NUM			5
134  
135  /*
136   * Flags that can be or'd into the la_objopen() return code
137   */
138  #define	LA_FLG_BINDTO		0x0001	/* audit symbinds TO this object */
139  #define	LA_FLG_BINDFROM		0x0002	/* audit symbinding FROM this object */
140  
141  /*
142   * Flags that can be or'd into the 'flags' argument of la_symbind()
143   */
144  #define	LA_SYMB_NOPLTENTER	0x0001	/* disable pltenter for this symbol */
145  #define	LA_SYMB_NOPLTEXIT	0x0002	/* disable pltexit for this symbol */
146  #define	LA_SYMB_STRUCTCALL	0x0004	/* this function call passes a */
147  					/*	structure as it's return code */
148  #define	LA_SYMB_DLSYM		0x0008	/* this symbol bindings is due to */
149  					/*	a call to dlsym() */
150  #define	LA_SYMB_ALTVALUE	0x0010	/* alternate symbol binding returned */
151  					/*	by la_symbind() */
152  
153  /*
154   * Flags that describe the object passed to la_objsearch()
155   */
156  #define	LA_SER_ORIG		0x001	/* original (needed) name */
157  #define	LA_SER_LIBPATH		0x002	/* LD_LIBRARY_PATH entry prepended */
158  #define	LA_SER_RUNPATH		0x004	/* runpath entry prepended */
159  #define	LA_SER_CONFIG		0x008	/* configuration entry prepended */
160  #define	LA_SER_DEFAULT		0x040	/* default path prepended */
161  #define	LA_SER_SECURE		0x080	/* default (secure) path prepended */
162  
163  #define	LA_SER_MASK		0xfff	/* mask of known flags */
164  
165  /*
166   * Flags that describe the la_activity()
167   */
168  #define	LA_ACT_CONSISTENT	0x00	/* add/deletion of objects complete */
169  #define	LA_ACT_ADD		0x01	/* objects being added */
170  #define	LA_ACT_DELETE		0x02	/* objects being deleted */
171  
172  
173  #ifndef	_KERNEL
174  #ifndef	_ASM
175  
176  #if defined(_LP64)
177  typedef long	lagreg_t;
178  #else
179  typedef int	lagreg_t;
180  #endif
181  
182  struct _la_sparc_regs {
183  	lagreg_t	lr_rego0;
184  	lagreg_t	lr_rego1;
185  	lagreg_t	lr_rego2;
186  	lagreg_t	lr_rego3;
187  	lagreg_t	lr_rego4;
188  	lagreg_t	lr_rego5;
189  	lagreg_t	lr_rego6;
190  	lagreg_t	lr_rego7;
191  };
192  
193  #if defined(_LP64)
194  typedef struct _la_sparc_regs	La_sparcv9_regs;
195  typedef struct {
196  	lagreg_t	lr_rsp;
197  	lagreg_t	lr_rbp;
198  	lagreg_t	lr_rdi;	    /* arg1 */
199  	lagreg_t	lr_rsi;	    /* arg2 */
200  	lagreg_t	lr_rdx;	    /* arg3 */
201  	lagreg_t	lr_rcx;	    /* arg4 */
202  	lagreg_t	lr_r8;	    /* arg5 */
203  	lagreg_t	lr_r9;	    /* arg6 */
204  } La_amd64_regs;
205  #else
206  typedef struct _la_sparc_regs	La_sparcv8_regs;
207  typedef struct {
208  	lagreg_t	lr_esp;
209  	lagreg_t	lr_ebp;
210  } La_i86_regs;
211  #endif
212  
213  #if	!defined(_SYS_INT_TYPES_H)
214  #if	defined(_LP64) || defined(_I32LPx)
215  typedef unsigned long		uintptr_t;
216  #else
217  typedef	unsigned int		uintptr_t;
218  #endif
219  #endif
220  
221  
222  #ifdef	__STDC__
223  extern uint_t		la_version(uint_t);
224  extern void		la_activity(uintptr_t *, uint_t);
225  extern void		la_preinit(uintptr_t *);
226  extern char		*la_objsearch(const char *, uintptr_t *, uint_t);
227  extern uint_t		la_objopen(Link_map *, Lmid_t, uintptr_t *);
228  extern uint_t		la_objclose(uintptr_t *);
229  extern int		la_objfilter(uintptr_t *, const char *, uintptr_t *,
230  				uint_t);
231  #if	defined(_LP64)
232  extern uintptr_t	la_amd64_pltenter(Elf64_Sym *, uint_t, uintptr_t *,
233  				uintptr_t *, La_amd64_regs *,	uint_t *,
234  				const char *);
235  extern uintptr_t	la_symbind64(Elf64_Sym *, uint_t, uintptr_t *,
236  				uintptr_t *, uint_t *, const char *);
237  extern uintptr_t	la_sparcv9_pltenter(Elf64_Sym *, uint_t, uintptr_t *,
238  				uintptr_t *, La_sparcv9_regs *,	uint_t *,
239  				const char *);
240  extern uintptr_t	la_pltexit64(Elf64_Sym *, uint_t, uintptr_t *,
241  				uintptr_t *, uintptr_t, const char *);
242  #else  /* !defined(_LP64) */
243  extern uintptr_t	la_symbind32(Elf32_Sym *, uint_t, uintptr_t *,
244  				uintptr_t *, uint_t *);
245  extern uintptr_t	la_sparcv8_pltenter(Elf32_Sym *, uint_t, uintptr_t *,
246  				uintptr_t *, La_sparcv8_regs *, uint_t *);
247  extern uintptr_t	la_i86_pltenter(Elf32_Sym *, uint_t, uintptr_t *,
248  				uintptr_t *, La_i86_regs *, uint_t *);
249  extern uintptr_t	la_pltexit(Elf32_Sym *, uint_t, uintptr_t *,
250  				uintptr_t *, uintptr_t);
251  #endif /* _LP64 */
252  #else  /* __STDC__ */
253  extern uint_t		la_version();
254  extern void		la_preinit();
255  extern uint_t		la_objopen();
256  extern uint_t		la_objclose();
257  extern int		la_objfilter();
258  #if	defined(_LP64)
259  extern uintptr_t	la_sparcv9_pltenter();
260  extern uintptr_t	la_pltexit64();
261  extern uintptr_t	la_symbind64();
262  #else  /* _ILP32 */
263  extern uintptr_t	la_sparcv8_pltenter();
264  extern uintptr_t	la_i86_pltenter();
265  extern uintptr_t	la_pltexit();
266  extern uintptr_t	la_symbind32();
267  #endif /* _LP64 */
268  #endif /* __STDC__ */
269  
270  
271  #endif /* _ASM */
272  #endif /* _KERNEL */
273  
274  #ifdef __cplusplus
275  }
276  #endif
277  
278  #endif	/* _LINK_H */
279