usr/src/uts/common/sys/auxv.h

   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 (c) 2018, 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  * These two AUX vectors are generally used to define information about the FPU.
 197  * These values are currently only used on the x86 platform.
 198  */
 199 #define AT_SUN_FPTYPE           2027
 200 #define AT_SUN_FPSIZE           2028
 201
 202 /*
 203  * The kernel is in a better position to determine whether a process needs to
 204  * ignore dangerous LD environment variables.  If set, this flags tells
 205  * ld.so.1 to run "secure" and ignore the the environment.
 206  */
 207 #define AF_SUN_SETUGID          0x00000001
 208
 209 /*
 210  * If set, this flag indicates that hardware capabilites can be verified
 211  * against the AT_SUN_HWCAP value.
 212  */
 213 #define AF_SUN_HWCAPVERIFY      0x00000002
 214
 215 /*
 216  * If set, this flag indicates that the the linker should not initialize
 217  * any of its link maps as primary link wrt the unified libc threading
 218  * interfaces.
 219  */
 220 #define AF_SUN_NOPLM            0x00000004
 221
 222 #ifdef  __cplusplus
 223 }
 224 #endif
 225
 226 #if defined(_AUXV_TARGET_ALL) || defined(_AUXV_TARGET_SPARC) || defined(__sparc)
 227 #include <sys/auxv_SPARC.h>
 228 #endif
 229
 230 #if defined(_AUXV_TARGET_ALL) || defined(_AUXV_TARGET_386) || defined(__x86)
 231 #include <sys/auxv_386.h>
 232 #endif
 233
 234 #endif  /* _SYS_AUXV_H */