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 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _ELFCAP_DOT_H 28 #define _ELFCAP_DOT_H 29 30 #include <sys/types.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * The elfcap code handles mappings to and from several string styles. 38 * The caller uses elfcap_style_t to specify the style to use. 39 */ 40 typedef enum { 41 ELFCAP_STYLE_FULL = 1, /* Full formal name (e.g. AV_386_SSE) */ 42 ELFCAP_STYLE_UC = 2, /* Informal upper case (e.g. SSE) */ 43 ELFCAP_STYLE_LC = 3 /* Informal lower case (e.g. sse) */ 44 } elfcap_style_t; 45 46 /* 47 * String descriptor: Contains the string and strlen(string). elfcap can 48 * be used in contexts (ld.so.1) where we do not want to make calls to 49 * string processing functions, so the length is calculated at compile time. 50 */ 51 typedef struct { 52 const char *s_str; 53 size_t s_len; 54 } elfcap_str_t; 55 56 /* 57 * Capabilities descriptor: This maps the integer bit value 58 * (c_val) to/from the various strings that represent it. 59 * 60 * c_val is normally expected to be a non-zero power of 2 61 * value (i.e. a single set bit). The value 0 is special, and 62 * used to represent a "reserved" placeholder in an array of 63 * capabilities. These reserved values have NULL string pointers, 64 * and are intended to be ignored by the processing code. 65 */ 66 typedef struct { 67 uint64_t c_val; /* Bit value */ 68 elfcap_str_t c_full; /* ELFCAP_STYLE_FULL */ 69 elfcap_str_t c_uc; /* ELFCAP_STYLE_UC */ 70 elfcap_str_t c_lc; /* ELFCAP_STYLE_LC */ 71 } elfcap_desc_t; 72 73 /* 74 * Valid format values: The various formats in which a generated 75 * string representing bitmap values can be displayed. 76 * 77 * This must be kept in sync with the format[] array in elfcap.c. 78 */ 79 typedef enum { 80 ELFCAP_FMT_SNGSPACE = 0, 81 ELFCAP_FMT_DBLSPACE = 1, 82 ELFCAP_FMT_PIPSPACE = 2 83 } elfcap_fmt_t; 84 85 /* 86 * Error codes: 87 */ 88 typedef enum { 89 ELFCAP_ERR_NONE = 0, /* no error */ 90 ELFCAP_ERR_BUFOVFL = 1, /* buffer overfow */ 91 ELFCAP_ERR_INVFMT = 2, /* invalid format */ 92 ELFCAP_ERR_UNKTAG = 3, /* unknown capabilities tag */ 93 ELFCAP_ERR_UNKMACH = 4, /* unknown machine type */ 94 ELFCAP_ERR_INVSTYLE = 5 /* unknown style */ 95 } elfcap_err_t; 96 97 98 /* 99 * # of each type of capability known to the system. These values 100 * must be kept in sync with the arrays found in elfcap.c. 101 * 102 * In ELFCLASS32, capability words are 32-bit, while ELFCLASS64 has 103 * 64-bit words. For simplicity of code and documentation, our policy 104 * is to limit each mask word to no more than 32 capabilities regardless of 105 * the ELFCLASS. 106 */ 107 #define ELFCAP_NUM_SF1 3 108 #define ELFCAP_NUM_HW1_SPARC 17 109 #define ELFCAP_NUM_HW1_386 28 110 111 112 /* 113 * Given a capability section tag and value, call the proper underlying 114 * "to str" function to generate the string description. 115 */ 116 extern elfcap_err_t elfcap_tag_to_str(elfcap_style_t, uint64_t, 117 uint64_t, char *, size_t, elfcap_fmt_t, ushort_t); 118 119 /* 120 * The functions that convert from a specific capability value to 121 * a string representation all use the same common prototype. 122 */ 123 typedef elfcap_err_t elfcap_to_str_func_t(elfcap_style_t, uint64_t, char *, 124 size_t, elfcap_fmt_t, ushort_t); 125 126 extern elfcap_to_str_func_t elfcap_hw1_to_str; 127 extern elfcap_to_str_func_t elfcap_sf1_to_str; 128 129 /* 130 * The reverse mapping: Given a string representation, turn it back into 131 * integer form. 132 */ 133 typedef uint64_t elfcap_from_str_func_t(elfcap_style_t, 134 const char *, ushort_t mach); 135 136 extern elfcap_from_str_func_t elfcap_hw1_from_str; 137 extern elfcap_from_str_func_t elfcap_sf1_from_str; 138 139 /* 140 * These functions give access to the individual descriptor arrays. 141 * The caller is allowed to copy and use the string pointers contained 142 * in the descriptors, but must not alter them. Functions are used instead 143 * of making the arrays directly visible to preclude copy relocations in 144 * non-pic code. 145 */ 146 extern const elfcap_desc_t *elfcap_getdesc_hw1_sparc(void); 147 extern const elfcap_desc_t *elfcap_getdesc_hw1_386(void); 148 extern const elfcap_desc_t *elfcap_getdesc_sf1(void); 149 150 #ifdef __cplusplus 151 } 152 #endif 153 154 #endif /* _ELFCAP_DOT_H */ 155