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 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 #pragma ident "%Z%%M% %I% %E% SMI" 26 27 /* LINTLIBRARY */ 28 29 /* 30 * String conversion routine for hardware capabilities types. 31 */ 32 #include <strings.h> 33 #include <stdio.h> 34 #include <ctype.h> 35 #include <limits.h> 36 #include <sys/machelf.h> 37 #include <sys/elf.h> 38 #include <sys/auxv_SPARC.h> 39 #include <sys/auxv_386.h> 40 #include <elfcap.h> 41 42 /* 43 * Define separators for val2str processing. 44 */ 45 static const Fmt_desc format[] = { 46 {" ", 1 }, 47 {" ", 2 }, 48 {" | ", 3 } 49 }; 50 51 /* 52 * Define all known capabilities as both lower and upper case strings. This 53 * duplication is necessary, rather than have one string and use something 54 * like toupper(), as a client such as ld.so.1 doesn't need the overhead of 55 * dragging in the internationalization support of toupper(). The Intel 3DNow 56 * flags are a slightly odd convention too. 57 * 58 * Define all known software capabilities. 59 */ 60 #ifdef CAP_UPPERCASE 61 static const char Sf1_fpknwn[] = "FPKNWN"; 62 static const char Sf1_fpused[] = "FPUSED"; 63 #elif CAP_LOWERCASE 64 static const char Sf1_fpknwn[] = "fpknwn"; 65 static const char Sf1_fpused[] = "fpused"; 66 #else 67 #error "Software Capabilities - what case do you want?" 68 #endif 69 70 /* 71 * Order the software capabilities to match their numeric value. See SF1_SUNW_ 72 * values in sys/elf.h. 73 */ 74 static const Cap_desc sf1[] = { 75 { SF1_SUNW_FPKNWN, Sf1_fpknwn, (sizeof (Sf1_fpknwn) - 1) }, 76 { SF1_SUNW_FPUSED, Sf1_fpused, (sizeof (Sf1_fpused) - 1) } 77 }; 78 static const uint_t sf1_num = sizeof (sf1) / sizeof (Cap_desc); 79 80 /* 81 * Define all known SPARC hardware capabilities. 82 */ 83 #ifdef CAP_UPPERCASE 84 static const char Hw1_s_mul32[] = "MUL32"; 85 static const char Hw1_s_div32[] = "DIV32"; 86 static const char Hw1_s_fsmuld[] = "FSMULD"; 87 static const char Hw1_s_v8plus[] = "V8PLUS"; 88 static const char Hw1_s_popc[] = "POPC"; 89 static const char Hw1_s_vis[] = "VIS"; 90 static const char Hw1_s_vis2[] = "VIS2"; 91 static const char Hw1_s_asi_blk_init[] = "ASI_BLK_INIT"; 92 static const char Hw1_s_fmaf[] = "FMAF"; 93 #elif CAP_LOWERCASE 94 static const char Hw1_s_mul32[] = "mul32"; 95 static const char Hw1_s_div32[] = "div32"; 96 static const char Hw1_s_fsmuld[] = "fsmuld"; 97 static const char Hw1_s_v8plus[] = "v8plus"; 98 static const char Hw1_s_popc[] = "popc"; 99 static const char Hw1_s_vis[] = "vis"; 100 static const char Hw1_s_vis2[] = "vis2"; 101 static const char Hw1_s_asi_blk_init[] = "asi_blk_init"; 102 static const char Hw1_s_fmaf[] = "fmaf"; 103 104 #else 105 #error "Hardware Capabilities (sparc) - what case do you want?" 106 #endif 107 108 /* 109 * Order the SPARC hardware capabilities to match their numeric value. See 110 * AV_SPARC_ values in sys/auxv_SPARC.h. 111 */ 112 static const Cap_desc hw1_s[] = { 113 { AV_SPARC_MUL32, Hw1_s_mul32, sizeof (Hw1_s_mul32) - 1 }, 114 { AV_SPARC_DIV32, Hw1_s_div32, sizeof (Hw1_s_div32) - 1 }, 115 { AV_SPARC_FSMULD, Hw1_s_fsmuld, sizeof (Hw1_s_fsmuld) - 1 }, 116 { AV_SPARC_V8PLUS, Hw1_s_v8plus, sizeof (Hw1_s_v8plus) - 1 }, 117 { AV_SPARC_POPC, Hw1_s_popc, sizeof (Hw1_s_popc) - 1 }, 118 { AV_SPARC_VIS, Hw1_s_vis, sizeof (Hw1_s_vis) - 1 }, 119 { AV_SPARC_VIS2, Hw1_s_vis2, sizeof (Hw1_s_vis2) - 1 }, 120 { AV_SPARC_ASI_BLK_INIT, Hw1_s_asi_blk_init, 121 sizeof (Hw1_s_asi_blk_init) - 1 }, 122 { AV_SPARC_FMAF, Hw1_s_fmaf, sizeof (Hw1_s_fmaf) - 1 } 123 }; 124 static const uint_t hw1_s_num = sizeof (hw1_s) / sizeof (Cap_desc); 125 126 /* 127 * Define all known Intel hardware capabilities. 128 */ 129 #ifdef CAP_UPPERCASE 130 static const char Hw1_i_fpu[] = "FPU"; 131 static const char Hw1_i_tsc[] = "TSC"; 132 static const char Hw1_i_cx8[] = "CX8"; 133 static const char Hw1_i_sep[] = "SEP"; 134 static const char Hw1_i_amd_sysc[] = "AMD_SYSC"; 135 static const char Hw1_i_cmov[] = "CMOV"; 136 static const char Hw1_i_mmx[] = "MMX"; 137 static const char Hw1_i_amd_mmx[] = "AMD_MMX"; 138 static const char Hw1_i_amd_3dnow[] = "AMD_3DNow"; 139 static const char Hw1_i_amd_3dnowx[] = "AMD_3DNowx"; 140 static const char Hw1_i_fxsr[] = "FXSR"; 141 static const char Hw1_i_sse[] = "SSE"; 142 static const char Hw1_i_sse2[] = "SSE2"; 143 static const char Hw1_i_pause[] = "PAUSE"; 144 static const char Hw1_i_sse3[] = "SSE3"; 145 static const char Hw1_i_mon[] = "MON"; 146 static const char Hw1_i_cx16[] = "CX16"; 147 #elif CAP_LOWERCASE 148 static const char Hw1_i_fpu[] = "fpu"; 149 static const char Hw1_i_tsc[] = "tsc"; 150 static const char Hw1_i_cx8[] = "cx8"; 151 static const char Hw1_i_sep[] = "sep"; 152 static const char Hw1_i_amd_sysc[] = "amd_sysc"; 153 static const char Hw1_i_cmov[] = "cmov"; 154 static const char Hw1_i_mmx[] = "mmx"; 155 static const char Hw1_i_amd_mmx[] = "amd_mmx"; 156 static const char Hw1_i_amd_3dnow[] = "amd_3dnow"; 157 static const char Hw1_i_amd_3dnowx[] = "amd_3dnowx"; 158 static const char Hw1_i_fxsr[] = "fxsr"; 159 static const char Hw1_i_sse[] = "sse"; 160 static const char Hw1_i_sse2[] = "sse2"; 161 static const char Hw1_i_pause[] = "pause"; 162 static const char Hw1_i_sse3[] = "sse3"; 163 static const char Hw1_i_mon[] = "mon"; 164 static const char Hw1_i_cx16[] = "cx16"; 165 #else 166 #error "Hardware Capabilities (intel) - what case do you want?" 167 #endif 168 169 /* 170 * Order the Intel hardware capabilities to match their numeric value. See 171 * AV_386_ values in sys/auxv_386.h. 172 */ 173 static const Cap_desc hw1_i[] = { 174 { AV_386_FPU, Hw1_i_fpu, sizeof (Hw1_i_fpu) - 1 }, 175 { AV_386_TSC, Hw1_i_tsc, sizeof (Hw1_i_tsc) - 1 }, 176 { AV_386_CX8, Hw1_i_cx8, sizeof (Hw1_i_cx8) - 1 }, 177 { AV_386_SEP, Hw1_i_sep, sizeof (Hw1_i_sep) - 1 }, 178 { AV_386_AMD_SYSC, Hw1_i_amd_sysc, sizeof (Hw1_i_amd_sysc) - 1 }, 179 { AV_386_CMOV, Hw1_i_cmov, sizeof (Hw1_i_cmov) - 1 }, 180 { AV_386_MMX, Hw1_i_mmx, sizeof (Hw1_i_mmx) - 1 }, 181 { AV_386_AMD_MMX, Hw1_i_amd_mmx, sizeof (Hw1_i_amd_mmx) - 1 }, 182 { AV_386_AMD_3DNow, Hw1_i_amd_3dnow, 183 sizeof (Hw1_i_amd_3dnow) - 1 }, 184 { AV_386_AMD_3DNowx, Hw1_i_amd_3dnowx, 185 sizeof (Hw1_i_amd_3dnowx) - 1 }, 186 { AV_386_FXSR, Hw1_i_fxsr, sizeof (Hw1_i_fxsr) - 1 }, 187 { AV_386_SSE, Hw1_i_sse, sizeof (Hw1_i_sse) - 1 }, 188 { AV_386_SSE2, Hw1_i_sse2, sizeof (Hw1_i_sse2) - 1 }, 189 { AV_386_PAUSE, Hw1_i_pause, sizeof (Hw1_i_pause) - 1 }, 190 { AV_386_SSE3, Hw1_i_sse3, sizeof (Hw1_i_sse3) - 1 }, 191 { AV_386_MON, Hw1_i_mon, sizeof (Hw1_i_mon) - 1 }, 192 { AV_386_CX16, Hw1_i_cx16, sizeof (Hw1_i_cx16) - 1 } 193 }; 194 static const uint_t hw1_i_num = sizeof (hw1_i) / sizeof (Cap_desc); 195 196 /* 197 * Concatenate a token to the string buffer. This can be a capailities token 198 * or a separator token. 199 */ 200 static int 201 token(char **ostr, size_t *olen, const char *nstr, size_t nlen) 202 { 203 if (*olen < nlen) 204 return (CAP_ERR_BUFOVFL); 205 206 (void) strcat(*ostr, nstr); 207 *ostr += nlen; 208 *olen -= nlen; 209 210 return (0); 211 } 212 213 /* 214 * Expand a capabilities value into the strings defined in the associated 215 * capabilities descriptor. 216 */ 217 static int 218 expand(uint64_t val, const Cap_desc *cdp, uint_t cnum, char *str, size_t slen, 219 int fmt) 220 { 221 uint_t cnt, mask; 222 int follow = 0, err; 223 224 if (val == 0) 225 return (0); 226 227 for (cnt = WORD_BIT, mask = 0x80000000; cnt; cnt--, 228 (mask = mask >> 1)) { 229 if ((val & mask) && (cnt <= cnum) && cdp[cnt - 1].c_val) { 230 if (follow++ && ((err = token(&str, &slen, 231 format[fmt].f_str, format[fmt].f_len)) != 0)) 232 return (err); 233 234 if ((err = token(&str, &slen, cdp[cnt - 1].c_str, 235 cdp[cnt - 1].c_len)) != 0) 236 return (err); 237 238 val = val & ~mask; 239 } 240 } 241 242 /* 243 * If there are any unknown bits remaining display the numeric value. 244 */ 245 if (val) { 246 if (follow && ((err = token(&str, &slen, format[fmt].f_str, 247 format[fmt].f_len)) != 0)) 248 return (err); 249 250 (void) snprintf(str, slen, "0x%llx", val); 251 } 252 return (0); 253 } 254 255 /* 256 * Expand a CA_SUNW_HW_1 value. 257 */ 258 int 259 hwcap_1_val2str(uint64_t val, char *str, size_t len, int fmt, ushort_t mach) 260 { 261 /* 262 * Initialize the string buffer, and validate the format request. 263 */ 264 *str = '\0'; 265 if (fmt > CAP_MAX_TYPE) 266 return (CAP_ERR_INVFMT); 267 268 if ((mach == EM_386) || (mach == EM_IA_64) || (mach == EM_AMD64)) 269 return (expand(val, &hw1_i[0], hw1_i_num, str, len, fmt)); 270 271 if ((mach == EM_SPARC) || (mach == EM_SPARC32PLUS) || 272 (mach == EM_SPARCV9)) 273 return (expand(val, &hw1_s[0], hw1_s_num, str, len, fmt)); 274 275 return (CAP_ERR_UNKMACH); 276 } 277 278 /* 279 * Expand a CA_SUNW_SF_1 value. Note, that at present these capabilities are 280 * common across all platforms. The use of "mach" is therefore redundant, but 281 * is retained for compatibility with the interface of hwcap_1_val2str(), and 282 * possible future expansion. 283 */ 284 int 285 /* ARGSUSED4 */ 286 sfcap_1_val2str(uint64_t val, char *str, size_t len, int fmt, ushort_t mach) 287 { 288 /* 289 * Initialize the string buffer, and validate the format request. 290 */ 291 *str = '\0'; 292 if (fmt > CAP_MAX_TYPE) 293 return (CAP_ERR_INVFMT); 294 295 return (expand(val, &sf1[0], sf1_num, str, len, fmt)); 296 } 297 298 /* 299 * Determine capability type from the capability tag. 300 */ 301 int 302 cap_val2str(uint64_t tag, uint64_t val, char *str, size_t len, int fmt, 303 ushort_t mach) 304 { 305 if (tag == CA_SUNW_HW_1) 306 return (hwcap_1_val2str(val, str, len, fmt, mach)); 307 if (tag == CA_SUNW_SF_1) 308 return (sfcap_1_val2str(val, str, len, fmt, mach)); 309 310 return (CAP_ERR_UNKTAG); 311 } 312 313 /* 314 * Determine a capabilities value from a capabilities string. 315 */ 316 static uint64_t 317 value(const char *str, const Cap_desc *cdp, uint_t cnum) 318 { 319 uint_t num; 320 321 for (num = 0; num < cnum; num++) { 322 if (strcmp(str, cdp[num].c_str) == 0) 323 return (cdp[num].c_val); 324 } 325 return (0); 326 } 327 328 uint64_t 329 sfcap_1_str2val(const char *str, ushort_t mach) 330 { 331 return (value(str, &sf1[0], sf1_num)); 332 } 333 334 uint64_t 335 hwcap_1_str2val(const char *str, ushort_t mach) 336 { 337 if ((mach == EM_386) || (mach == EM_IA_64) || (mach == EM_AMD64)) 338 return (value(str, &hw1_i[0], hw1_i_num)); 339 340 if ((mach == EM_SPARC) || (mach == EM_SPARC32PLUS) || 341 (mach == EM_SPARCV9)) 342 return (value(str, &hw1_s[0], hw1_s_num)); 343 344 return (0); 345 } 346