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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 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
     22 /*	  All Rights Reserved  	*/
     23 
     24 
     25 /*
     26  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
     27  * Use is subject to license terms.
     28  */
     29 
     30 #ifndef	_SYS_AUXV_H
     31 #define	_SYS_AUXV_H
     32 
     33 #pragma ident	"@(#)auxv.h	1.40	07/07/25 SMI"	/* SVr4.0 1.2	*/
     34 
     35 #include <sys/types.h>
     36 
     37 #ifdef	__cplusplus
     38 extern "C" {
     39 #endif
     40 
     41 #if !defined(_ASM)
     42 typedef struct
     43 {
     44 	int	a_type;
     45 	union {
     46 		long	a_val;
     47 #ifdef __STDC__
     48 		void	*a_ptr;
     49 #else
     50 		char	*a_ptr;
     51 #endif
     52 		void	(*a_fcn)();
     53 	} a_un;
     54 } auxv_t;
     55 
     56 #if defined(_SYSCALL32)
     57 
     58 typedef struct {
     59 	int32_t	a_type;
     60 	union	{
     61 		int32_t	a_val;
     62 		caddr32_t a_ptr;
     63 		caddr32_t a_fcn;
     64 	} a_un;
     65 } auxv32_t;
     66 
     67 #endif	/* _SYSCALL32 */
     68 
     69 #endif /* _ASM */
     70 
     71 #define	AT_NULL		0
     72 #define	AT_IGNORE	1
     73 #define	AT_EXECFD	2
     74 #define	AT_PHDR		3	/* &phdr[0] */
     75 #define	AT_PHENT	4	/* sizeof(phdr[0]) */
     76 #define	AT_PHNUM	5	/* # phdr entries */
     77 #define	AT_PAGESZ	6	/* getpagesize(2) */
     78 #define	AT_BASE		7	/* ld.so base addr */
     79 #define	AT_FLAGS	8	/* processor flags */
     80 #define	AT_ENTRY	9	/* a.out entry point */
     81 
     82 /*
     83  * These relate to the original PPC ABI document; Linux reused
     84  * the values for other things (see below), so disambiguation of
     85  * these values may require additional context in PPC binaries.
     86  *
     87  * AT_DCACHEBSIZE	10	smallest data cache block size
     88  * AT_ICACHEBSIZE	11	smallest instruction cache block size
     89  * AT_UCACHEBSIZE	12	smallest unified cache block size
     90  *
     91  * These are the values from LSB 1.3, the first five are also described
     92  * in the draft amd64 ABI.
     93  *
     94  * At the time of writing, Solaris doesn't place any of these values into
     95  * the aux vector, except AT_CLKTCK which is placed on the aux vector for
     96  * lx branded processes; also, we do similar things via AT_SUN_ values.
     97  *
     98  * AT_NOTELF		10	program is not ELF?
     99  * AT_UID		11	real user id
    100  * AT_EUID		12	effective user id
    101  * AT_GID		13	real group id
    102  * AT_EGID		14	effective group id
    103  *
    104  * AT_PLATFORM		15
    105  * AT_HWCAP		16
    106  * AT_CLKTCK		17	c.f. _SC_CLK_TCK
    107  * AT_FPUCW		18
    108  *
    109  * AT_DCACHEBSIZE	19	(moved from 10)
    110  * AT_ICACHEBSIZE	20	(moved from 11)
    111  * AT_UCACHEBSIZE	21	(moved from 12)
    112  *
    113  * AT_IGNOREPPC		22
    114  */
    115 
    116 /*
    117  * Sun extensions begin here
    118  */
    119 #define	AT_SUN_UID	2000	/* effective user id */
    120 #define	AT_SUN_RUID	2001	/* real user id */
    121 #define	AT_SUN_GID	2002	/* effective group id */
    122 #define	AT_SUN_RGID	2003	/* real group id */
    123 
    124 /*
    125  * The following attributes are specific to the
    126  * kernel implementation of the linker/loader.
    127  */
    128 #define	AT_SUN_LDELF	2004	/* dynamic linker's ELF header */
    129 #define	AT_SUN_LDSHDR	2005	/* dynamic linker's section headers */
    130 #define	AT_SUN_LDNAME	2006	/* name of dynamic linker */
    131 #define	AT_SUN_LPAGESZ	2007	/* large pagesize */
    132 /*
    133  * The following aux vector provides a null-terminated platform
    134  * identification string. This information is the same as provided
    135  * by sysinfo(2) when invoked with the command SI_PLATFORM.
    136  */
    137 #define	AT_SUN_PLATFORM	2008	/* platform name */
    138 
    139 /*
    140  * These attributes communicate performance -hints- about processor
    141  * hardware capabilities that might be useful to library implementations.
    142  */
    143 #define	AT_SUN_HWCAP	2009
    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 #if defined(_SYSCALL32)
    152 extern uint_t auxv_hwcap32;
    153 #endif /* _SYSCALL32 */
    154 #else
    155 extern uint_t getisax(uint32_t *, uint_t);
    156 #endif	/* _KERNEL */
    157 
    158 #define	AT_SUN_IFLUSH	2010	/* flush icache? */
    159 #define	AT_SUN_CPU	2011	/* cpu name */
    160 
    161 /*
    162  * The following aux vector provides a pointer to a null-terminated
    163  * path name, a copy of the path name passed to the exec() system
    164  * call but that has had all symlinks resolved (see resolvepath(2)).
    165  */
    166 #define	AT_SUN_EXECNAME	2014	/* exec() path name */
    167 
    168 #define	AT_SUN_MMU	2015	/* mmu module name */
    169 #define	AT_SUN_LDDATA	2016	/* dynamic linkers data segment */
    170 
    171 #define	AT_SUN_AUXFLAGS	2017	/* AF_SUN_ flags passed from the kernel */
    172 
    173 /*
    174  * Used to indicate to the runtime linker the name of the emulation binary,
    175  * if one is being used. For brands, this is the name of the brand library.
    176  */
    177 #define	AT_SUN_EMULATOR		2018
    178 
    179 #define	AT_SUN_BRANDNAME	2019
    180 
    181 /*
    182  * Aux vectors available for brand modules.
    183  */
    184 #define	AT_SUN_BRAND_AUX1	2020
    185 #define	AT_SUN_BRAND_AUX2	2021
    186 #define	AT_SUN_BRAND_AUX3	2022
    187 
    188 /*
    189  * The kernel is in a better position to determine whether a process needs to
    190  * ignore dangerous LD environment variables.  If set, this flags tells
    191  * ld.so.1 to run "secure" and ignore the the environment.
    192  */
    193 #define	AF_SUN_SETUGID		0x00000001
    194 
    195 /*
    196  * If set, this flag indicates that hardware capabilites can be verified
    197  * against the AT_SUN_HWCAP value.
    198  */
    199 #define	AF_SUN_HWCAPVERIFY	0x00000002
    200 
    201 #ifdef	__cplusplus
    202 }
    203 #endif
    204 
    205 #if defined(_AUXV_TARGET_ALL) || defined(_AUXV_TARGET_SPARC) || defined(__sparc)
    206 #include <sys/auxv_SPARC.h>
    207 #endif
    208 
    209 #if defined(_AUXV_TARGET_ALL) || defined(_AUXV_TARGET_386) || defined(__x86)
    210 #include <sys/auxv_386.h>
    211 #endif
    212 
    213 #endif	/* _SYS_AUXV_H */
    214