xref: /titanic_41/usr/src/uts/common/sys/auxv.h (revision dd7afb26c5036958cddc0c2c1e499571664a6ed0)
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 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
22 /*	  All Rights Reserved  	*/
23 
24 
25 /*
26  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
27  *
28  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
29  * Use is subject to license terms.
30  */
31 /*
32  * Copyright 2016 Joyent, Inc.
33  */
34 
35 #ifndef	_SYS_AUXV_H
36 #define	_SYS_AUXV_H
37 
38 #include <sys/types.h>
39 
40 #ifdef	__cplusplus
41 extern "C" {
42 #endif
43 
44 #if !defined(_ASM)
45 typedef struct
46 {
47 	int	a_type;
48 	union {
49 		long	a_val;
50 		void	*a_ptr;
51 		void	(*a_fcn)();
52 	} a_un;
53 } auxv_t;
54 
55 #if defined(_SYSCALL32)
56 
57 typedef struct {
58 	int32_t	a_type;
59 	union	{
60 		int32_t	a_val;
61 		caddr32_t a_ptr;
62 		caddr32_t a_fcn;
63 	} a_un;
64 } auxv32_t;
65 
66 #endif	/* _SYSCALL32 */
67 
68 #endif /* _ASM */
69 
70 #define	AT_NULL		0
71 #define	AT_IGNORE	1
72 #define	AT_EXECFD	2
73 #define	AT_PHDR		3	/* &phdr[0] */
74 #define	AT_PHENT	4	/* sizeof(phdr[0]) */
75 #define	AT_PHNUM	5	/* # phdr entries */
76 #define	AT_PAGESZ	6	/* getpagesize(2) */
77 #define	AT_BASE		7	/* ld.so base addr */
78 #define	AT_FLAGS	8	/* processor flags */
79 #define	AT_ENTRY	9	/* a.out entry point */
80 
81 /*
82  * These relate to the original PPC ABI document; Linux reused
83  * the values for other things (see below), so disambiguation of
84  * these values may require additional context in PPC binaries.
85  *
86  * AT_DCACHEBSIZE	10	smallest data cache block size
87  * AT_ICACHEBSIZE	11	smallest instruction cache block size
88  * AT_UCACHEBSIZE	12	smallest unified cache block size
89  *
90  * These are the values from LSB 1.3, the first five are also described
91  * in the draft amd64 ABI.
92  *
93  * At the time of writing, Solaris doesn't place any of these values into
94  * the aux vector, except AT_CLKTCK which is placed on the aux vector for
95  * lx branded processes; also, we do similar things via AT_SUN_ values.
96  *
97  * AT_NOTELF		10	program is not ELF?
98  * AT_UID		11	real user id
99  * AT_EUID		12	effective user id
100  * AT_GID		13	real group id
101  * AT_EGID		14	effective group id
102  *
103  * AT_PLATFORM		15
104  * AT_HWCAP		16
105  * AT_CLKTCK		17	c.f. _SC_CLK_TCK
106  * AT_FPUCW		18
107  *
108  * AT_DCACHEBSIZE	19	(moved from 10)
109  * AT_ICACHEBSIZE	20	(moved from 11)
110  * AT_UCACHEBSIZE	21	(moved from 12)
111  *
112  * AT_IGNOREPPC		22
113  */
114 
115 /*
116  * Sun extensions begin here
117  */
118 #define	AT_SUN_UID	2000	/* effective user id */
119 #define	AT_SUN_RUID	2001	/* real user id */
120 #define	AT_SUN_GID	2002	/* effective group id */
121 #define	AT_SUN_RGID	2003	/* real group id */
122 
123 /*
124  * The following attributes are specific to the
125  * kernel implementation of the linker/loader.
126  */
127 #define	AT_SUN_LDELF	2004	/* dynamic linker's ELF header */
128 #define	AT_SUN_LDSHDR	2005	/* dynamic linker's section headers */
129 #define	AT_SUN_LDNAME	2006	/* name of dynamic linker */
130 #define	AT_SUN_LPAGESZ	2007	/* large pagesize */
131 /*
132  * The following aux vector provides a null-terminated platform
133  * identification string. This information is the same as provided
134  * by sysinfo(2) when invoked with the command SI_PLATFORM.
135  */
136 #define	AT_SUN_PLATFORM	2008	/* platform name */
137 
138 /*
139  * These attributes communicate performance -hints- about processor
140  * hardware capabilities that might be useful to library implementations.
141  */
142 #define	AT_SUN_HWCAP	2009
143 #define	AT_SUN_HWCAP2	2023
144 
145 #if defined(_KERNEL)
146 /*
147  * User info regarding machine attributes, respectively reported to native and
148  * non-native user apps.
149  */
150 extern uint_t auxv_hwcap;
151 extern uint_t auxv_hwcap_2;
152 #if defined(_SYSCALL32)
153 extern uint_t auxv_hwcap32;
154 extern uint_t auxv_hwcap32_2;
155 #endif /* _SYSCALL32 */
156 #else
157 extern uint_t getisax(uint32_t *, uint_t);
158 #endif	/* _KERNEL */
159 
160 #define	AT_SUN_IFLUSH	2010	/* flush icache? */
161 #define	AT_SUN_CPU	2011	/* cpu name */
162 
163 /*
164  * The following aux vector provides a pointer to a null-terminated
165  * path name, a copy of the path name passed to the exec() system
166  * call but that has had all symlinks resolved (see resolvepath(2)).
167  */
168 #define	AT_SUN_EXECNAME	2014	/* exec() path name */
169 
170 #define	AT_SUN_MMU	2015	/* mmu module name */
171 #define	AT_SUN_LDDATA	2016	/* dynamic linkers data segment */
172 
173 #define	AT_SUN_AUXFLAGS	2017	/* AF_SUN_ flags passed from the kernel */
174 
175 /*
176  * Used to indicate to the runtime linker the name of the emulation binary,
177  * if one is being used. For brands, this is the name of the brand library.
178  */
179 #define	AT_SUN_EMULATOR		2018
180 
181 #define	AT_SUN_BRANDNAME	2019
182 
183 /*
184  * Aux vectors available for brand modules.
185  */
186 #define	AT_SUN_BRAND_AUX1	2020
187 #define	AT_SUN_BRAND_AUX2	2021
188 #define	AT_SUN_BRAND_AUX3	2022
189 
190 /*
191  * Aux vector for comm page
192  */
193 #define	AT_SUN_COMMPAGE		2026
194 
195 /*
196  * Note that 2023 is reserved for the AT_SUN_HWCAP2 word defined above.
197  */
198 
199 /*
200  * The kernel is in a better position to determine whether a process needs to
201  * ignore dangerous LD environment variables.  If set, this flags tells
202  * ld.so.1 to run "secure" and ignore the the environment.
203  */
204 #define	AF_SUN_SETUGID		0x00000001
205 
206 /*
207  * If set, this flag indicates that hardware capabilites can be verified
208  * against the AT_SUN_HWCAP value.
209  */
210 #define	AF_SUN_HWCAPVERIFY	0x00000002
211 
212 /*
213  * If set, this flag indicates that the the linker should not initialize
214  * any of its link maps as primary link wrt the unified libc threading
215  * interfaces.
216  */
217 #define	AF_SUN_NOPLM		0x00000004
218 
219 #ifdef	__cplusplus
220 }
221 #endif
222 
223 #if defined(_AUXV_TARGET_ALL) || defined(_AUXV_TARGET_SPARC) || defined(__sparc)
224 #include <sys/auxv_SPARC.h>
225 #endif
226 
227 #if defined(_AUXV_TARGET_ALL) || defined(_AUXV_TARGET_386) || defined(__x86)
228 #include <sys/auxv_386.h>
229 #endif
230 
231 #endif	/* _SYS_AUXV_H */
232