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 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _LIBC_INT_H 28 #define _LIBC_INT_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Libc/rtld Runtime Interface 38 */ 39 #define CI_NULL 0 /* (void) last entry */ 40 #define CI_VERSION 1 /* current version of ri_interface */ 41 #define CI_ATEXIT 2 /* _preexec_exit_handlers() address */ 42 #define CI_LCMESSAGES 3 /* message locale */ 43 #define CI_BIND_GUARD 4 /* bind_guard() address */ 44 #define CI_BIND_CLEAR 5 /* bind_clear() address */ 45 #define CI_THR_SELF 6 /* thr_self() address */ 46 #define CI_TLS_MODADD 7 /* __tls_mod_add() address */ 47 #define CI_TLS_MODREM 8 /* __tls_mod_remove() address */ 48 #define CI_TLS_STATMOD 9 /* __tls_static_mods() address */ 49 #define CI_THRINIT 10 /* libc thread initialization */ 50 51 #define CI_MAX 11 52 53 #define CI_V_NONE 0 /* ci_version versions */ 54 #define CI_V_ONE 1 /* original version */ 55 #define CI_V_TWO 2 56 #define CI_V_THREE 3 57 #define CI_V_FOUR 4 58 #define CI_V_FIVE 5 59 #define CI_V_CURRENT CI_V_FIVE /* current version of libc interface */ 60 #define CI_V_NUM 6 /* number of CI_V_* numbers */ 61 62 /* 63 * Flags for the bindguard routines. 64 * THR_FLG_RTLD used to live in usr/src/cmd/sgs/rtld/common/_rtld.h 65 * THR_FLG_NOLOCK and THR_FLG_REENTER are new in version CI_V_FIVE. 66 */ 67 #define THR_FLG_RTLD 0x00000001 /* bind_guard() flag */ 68 #define THR_FLG_NOLOCK 0x00000002 /* don't use ld.so.1's lock */ 69 #define THR_FLG_REENTER 0x00000004 /* temporary leave / reenter */ 70 71 /* 72 * Libc to ld.so.1 interface communication structure. 73 */ 74 typedef struct { 75 int ci_tag; 76 union { 77 int (*ci_func)(); 78 long ci_val; 79 char *ci_ptr; 80 } ci_un; 81 } Lc_interface; 82 83 /* 84 * Address range returned via CI_ATEXIT. Note, the address range array passed 85 * back from ld.so.1 is maintained by ld.so.1 and should not be freed by libc. 86 */ 87 typedef struct { 88 void * lb; /* lower bound */ 89 void * ub; /* upper bound */ 90 } Lc_addr_range_t; 91 92 /* 93 * Thread-Local storage data type and interfaces shared between 94 * libc & ld.so.1. 95 */ 96 97 typedef struct { 98 unsigned long ti_moduleid; /* module ID for TLS var */ 99 unsigned long ti_tlsoffset; /* offset into tls block for TLS var */ 100 } TLS_index; 101 102 103 typedef struct { 104 const char *tm_modname; /* name of object */ 105 /* containing TLS */ 106 unsigned long tm_modid; /* TLS module id */ 107 void * tm_tlsblock; /* pointer to r/o init image */ 108 unsigned long tm_filesz; /* initialized file size */ 109 unsigned long tm_memsz; /* memory size */ 110 long tm_stattlsoffset; /* signed offset into static */ 111 /* TLS block */ 112 unsigned long tm_flags; 113 void * tm_tlsinitarray; /* TLS .init function array */ 114 unsigned long tm_tlsinitarraycnt; /* # of entries in initarray */ 115 void * tm_tlsfiniarray; /* TLS .fini function array */ 116 unsigned long tm_tlsfiniarraycnt; /* # of entries in finiarray */ 117 unsigned long tm_pad[5]; /* future expansion */ 118 } TLS_modinfo; 119 120 #ifdef _SYSCALL32 121 typedef struct { 122 caddr32_t tm_modname; /* name of object */ 123 /* containing TLS */ 124 uint32_t tm_modid; /* TLS module id */ 125 caddr32_t tm_tlsblock; /* pointer to r/o init image */ 126 uint32_t tm_filesz; /* initialized file size */ 127 uint32_t tm_memsz; /* memory size */ 128 int32_t tm_stattlsoffset; /* signed offset into static */ 129 /* TLS block */ 130 uint32_t tm_flags; 131 caddr32_t tm_tlsinitarray; /* TLS .init function array */ 132 uint32_t tm_tlsinitarraycnt; /* # of entries in initarray */ 133 caddr32_t tm_tlsfiniarray; /* TLS .fini function array */ 134 uint32_t tm_tlsfiniarraycnt; /* # of entries in finiarray */ 135 uint32_t tm_pad[5]; /* future expansion */ 136 } TLS_modinfo32; 137 #endif 138 139 140 /* 141 * Flag values for TLS_modifo.tm_flags 142 */ 143 #define TM_FLG_STATICTLS 0x0001 /* Static TLS module */ 144 145 146 #ifdef __cplusplus 147 } 148 #endif 149 150 #endif /* _LIBC_INT_H */ 151