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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27#pragma ident "@(#)dt_dis.c 1.6 05/07/31 SMI" 28 29#include <strings.h> 30#include <stdio.h> 31 32#include <dt_impl.h> 33#include <dt_ident.h> 34 35/*ARGSUSED*/ 36static void 37dt_dis_log(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 38{ 39 (void) fprintf(fp, "%-4s %%r%u, %%r%u, %%r%u", name, 40 DIF_INSTR_R1(in), DIF_INSTR_R2(in), DIF_INSTR_RD(in)); 41} 42 43/*ARGSUSED*/ 44static void 45dt_dis_branch(const dtrace_difo_t *dp, const char *name, 46 dif_instr_t in, FILE *fp) 47{ 48 (void) fprintf(fp, "%-4s %u", name, DIF_INSTR_LABEL(in)); 49} 50 51/*ARGSUSED*/ 52static void 53dt_dis_load(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 54{ 55 (void) fprintf(fp, "%-4s [%%r%u], %%r%u", name, 56 DIF_INSTR_R1(in), DIF_INSTR_RD(in)); 57} 58 59/*ARGSUSED*/ 60static void 61dt_dis_store(const dtrace_difo_t *dp, const char *name, 62 dif_instr_t in, FILE *fp) 63{ 64 (void) fprintf(fp, "%-4s %%r%u, [%%r%u]", name, 65 DIF_INSTR_R1(in), DIF_INSTR_RD(in)); 66} 67 68/*ARGSUSED*/ 69static void 70dt_dis_str(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 71{ 72 (void) fprintf(fp, "%s", name); 73} 74 75/*ARGSUSED*/ 76static void 77dt_dis_r1rd(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 78{ 79 (void) fprintf(fp, "%-4s %%r%u, %%r%u", name, 80 DIF_INSTR_R1(in), DIF_INSTR_RD(in)); 81} 82 83/*ARGSUSED*/ 84static void 85dt_dis_cmp(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 86{ 87 (void) fprintf(fp, "%-4s %%r%u, %%r%u", name, 88 DIF_INSTR_R1(in), DIF_INSTR_R2(in)); 89} 90 91/*ARGSUSED*/ 92static void 93dt_dis_tst(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 94{ 95 (void) fprintf(fp, "%-4s %%r%u", name, DIF_INSTR_R1(in)); 96} 97 98static const char * 99dt_dis_varname(const dtrace_difo_t *dp, uint_t id, uint_t scope) 100{ 101 const dtrace_difv_t *dvp = dp->dtdo_vartab; 102 uint_t i; 103 104 for (i = 0; i < dp->dtdo_varlen; i++, dvp++) { 105 if (dvp->dtdv_id == id && dvp->dtdv_scope == scope) { 106 if (dvp->dtdv_name < dp->dtdo_strlen) 107 return (dp->dtdo_strtab + dvp->dtdv_name); 108 break; 109 } 110 } 111 112 return (NULL); 113} 114 115static uint_t 116dt_dis_scope(const char *name) 117{ 118 switch (name[2]) { 119 case 'l': return (DIFV_SCOPE_LOCAL); 120 case 't': return (DIFV_SCOPE_THREAD); 121 case 'g': return (DIFV_SCOPE_GLOBAL); 122 default: return (-1u); 123 } 124} 125 126static void 127dt_dis_lda(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 128{ 129 uint_t var = DIF_INSTR_R1(in); 130 const char *vname; 131 132 (void) fprintf(fp, "%-4s DT_VAR(%u), %%r%u, %%r%u", name, 133 var, DIF_INSTR_R2(in), DIF_INSTR_RD(in)); 134 135 if ((vname = dt_dis_varname(dp, var, dt_dis_scope(name))) != NULL) 136 (void) fprintf(fp, "\t\t! DT_VAR(%u) = \"%s\"", var, vname); 137} 138 139static void 140dt_dis_ldv(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 141{ 142 uint_t var = DIF_INSTR_VAR(in); 143 const char *vname; 144 145 (void) fprintf(fp, "%-4s DT_VAR(%u), %%r%u", 146 name, var, DIF_INSTR_RD(in)); 147 148 if ((vname = dt_dis_varname(dp, var, dt_dis_scope(name))) != NULL) 149 (void) fprintf(fp, "\t\t! DT_VAR(%u) = \"%s\"", var, vname); 150} 151 152static void 153dt_dis_stv(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 154{ 155 uint_t var = DIF_INSTR_VAR(in); 156 const char *vname; 157 158 (void) fprintf(fp, "%-4s %%r%u, DT_VAR(%u)", 159 name, DIF_INSTR_RS(in), var); 160 161 if ((vname = dt_dis_varname(dp, var, dt_dis_scope(name))) != NULL) 162 (void) fprintf(fp, "\t\t! DT_VAR(%u) = \"%s\"", var, vname); 163} 164 165static void 166dt_dis_setx(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 167{ 168 uint_t intptr = DIF_INSTR_INTEGER(in); 169 170 (void) fprintf(fp, "%-4s DT_INTEGER[%u], %%r%u", name, 171 intptr, DIF_INSTR_RD(in)); 172 173 if (intptr < dp->dtdo_intlen) { 174 (void) fprintf(fp, "\t\t! 0x%llx", 175 (u_longlong_t)dp->dtdo_inttab[intptr]); 176 } 177} 178 179static void 180dt_dis_sets(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 181{ 182 uint_t strptr = DIF_INSTR_STRING(in); 183 184 (void) fprintf(fp, "%-4s DT_STRING[%u], %%r%u", name, 185 strptr, DIF_INSTR_RD(in)); 186 187 if (strptr < dp->dtdo_strlen) 188 (void) fprintf(fp, "\t\t! \"%s\"", dp->dtdo_strtab + strptr); 189} 190 191/*ARGSUSED*/ 192static void 193dt_dis_ret(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 194{ 195 (void) fprintf(fp, "%-4s %%r%u", name, DIF_INSTR_RD(in)); 196} 197 198/*ARGSUSED*/ 199static void 200dt_dis_call(const dtrace_difo_t *dp, const char *name, dif_instr_t in, FILE *fp) 201{ 202 uint_t subr = DIF_INSTR_SUBR(in); 203 204 (void) fprintf(fp, "%-4s DIF_SUBR(%u), %%r%u\t\t! %s", 205 name, subr, DIF_INSTR_RD(in), dtrace_subrstr(NULL, subr)); 206} 207 208/*ARGSUSED*/ 209static void 210dt_dis_pushts(const dtrace_difo_t *dp, 211 const char *name, dif_instr_t in, FILE *fp) 212{ 213 static const char *const tnames[] = { "D type", "string" }; 214 uint_t type = DIF_INSTR_TYPE(in); 215 216 (void) fprintf(fp, "%-4s DT_TYPE(%u), %%r%u, %%r%u", 217 name, type, DIF_INSTR_R2(in), DIF_INSTR_RS(in)); 218 219 if (type < sizeof (tnames) / sizeof (tnames[0])) 220 (void) fprintf(fp, "\t! DT_TYPE(%u) = %s", type, tnames[type]); 221} 222 223static void 224dt_dis_xlate(const dtrace_difo_t *dp, 225 const char *name, dif_instr_t in, FILE *fp) 226{ 227 uint_t xlr = DIF_INSTR_XLREF(in); 228 229 (void) fprintf(fp, "%-4s DT_XLREF[%u], %%r%u", 230 name, xlr, DIF_INSTR_RD(in)); 231 232 if (xlr < dp->dtdo_xlmlen) { 233 (void) fprintf(fp, "\t\t! DT_XLREF[%u] = %u.%s", xlr, 234 (uint_t)dp->dtdo_xlmtab[xlr]->dn_membexpr->dn_xlator->dx_id, 235 dp->dtdo_xlmtab[xlr]->dn_membname); 236 } 237} 238 239static char * 240dt_dis_typestr(const dtrace_diftype_t *t, char *buf, size_t len) 241{ 242 char kind[16], ckind[16]; 243 244 switch (t->dtdt_kind) { 245 case DIF_TYPE_CTF: 246 (void) strcpy(kind, "D type"); 247 break; 248 case DIF_TYPE_STRING: 249 (void) strcpy(kind, "string"); 250 break; 251 default: 252 (void) snprintf(kind, sizeof (kind), "0x%x", t->dtdt_kind); 253 } 254 255 switch (t->dtdt_ckind) { 256 case CTF_K_UNKNOWN: 257 (void) strcpy(ckind, "unknown"); 258 break; 259 case CTF_K_INTEGER: 260 (void) strcpy(ckind, "integer"); 261 break; 262 case CTF_K_FLOAT: 263 (void) strcpy(ckind, "float"); 264 break; 265 case CTF_K_POINTER: 266 (void) strcpy(ckind, "pointer"); 267 break; 268 case CTF_K_ARRAY: 269 (void) strcpy(ckind, "array"); 270 break; 271 case CTF_K_FUNCTION: 272 (void) strcpy(ckind, "function"); 273 break; 274 case CTF_K_STRUCT: 275 (void) strcpy(ckind, "struct"); 276 break; 277 case CTF_K_UNION: 278 (void) strcpy(ckind, "union"); 279 break; 280 case CTF_K_ENUM: 281 (void) strcpy(ckind, "enum"); 282 break; 283 case CTF_K_FORWARD: 284 (void) strcpy(ckind, "forward"); 285 break; 286 case CTF_K_TYPEDEF: 287 (void) strcpy(ckind, "typedef"); 288 break; 289 case CTF_K_VOLATILE: 290 (void) strcpy(ckind, "volatile"); 291 break; 292 case CTF_K_CONST: 293 (void) strcpy(ckind, "const"); 294 break; 295 case CTF_K_RESTRICT: 296 (void) strcpy(ckind, "restrict"); 297 break; 298 default: 299 (void) snprintf(ckind, sizeof (ckind), "0x%x", t->dtdt_ckind); 300 } 301 302 if (t->dtdt_flags & DIF_TF_BYREF) { 303 (void) snprintf(buf, len, "%s (%s) by ref (size %lu)", 304 kind, ckind, (ulong_t)t->dtdt_size); 305 } else { 306 (void) snprintf(buf, len, "%s (%s) (size %lu)", 307 kind, ckind, (ulong_t)t->dtdt_size); 308 } 309 310 return (buf); 311} 312 313static void 314dt_dis_rtab(const char *rtag, const dtrace_difo_t *dp, FILE *fp, 315 const dof_relodesc_t *rp, uint32_t len) 316{ 317 (void) fprintf(fp, "\n%-4s %-8s %-8s %s\n", 318 rtag, "OFFSET", "DATA", "NAME"); 319 320 for (; len != 0; len--, rp++) { 321 (void) fprintf(fp, "%-4u %-8llu %-8llu %s\n", 322 rp->dofr_type, (u_longlong_t)rp->dofr_offset, 323 (u_longlong_t)rp->dofr_data, 324 &dp->dtdo_strtab[rp->dofr_name]); 325 } 326} 327 328void 329dt_dis(const dtrace_difo_t *dp, FILE *fp) 330{ 331 static const struct opent { 332 const char *op_name; 333 void (*op_func)(const dtrace_difo_t *, const char *, 334 dif_instr_t, FILE *); 335 } optab[] = { 336 { "(illegal opcode)", dt_dis_str }, 337 { "or", dt_dis_log }, /* DIF_OP_OR */ 338 { "xor", dt_dis_log }, /* DIF_OP_XOR */ 339 { "and", dt_dis_log }, /* DIF_OP_AND */ 340 { "sll", dt_dis_log }, /* DIF_OP_SLL */ 341 { "srl", dt_dis_log }, /* DIF_OP_SRL */ 342 { "sub", dt_dis_log }, /* DIF_OP_SUB */ 343 { "add", dt_dis_log }, /* DIF_OP_ADD */ 344 { "mul", dt_dis_log }, /* DIF_OP_MUL */ 345 { "sdiv", dt_dis_log }, /* DIF_OP_SDIV */ 346 { "udiv", dt_dis_log }, /* DIF_OP_UDIV */ 347 { "srem", dt_dis_log }, /* DIF_OP_SREM */ 348 { "urem", dt_dis_log }, /* DIF_OP_UREM */ 349 { "not", dt_dis_r1rd }, /* DIF_OP_NOT */ 350 { "mov", dt_dis_r1rd }, /* DIF_OP_MOV */ 351 { "cmp", dt_dis_cmp }, /* DIF_OP_CMP */ 352 { "tst", dt_dis_tst }, /* DIF_OP_TST */ 353 { "ba", dt_dis_branch }, /* DIF_OP_BA */ 354 { "be", dt_dis_branch }, /* DIF_OP_BE */ 355 { "bne", dt_dis_branch }, /* DIF_OP_BNE */ 356 { "bg", dt_dis_branch }, /* DIF_OP_BG */ 357 { "bgu", dt_dis_branch }, /* DIF_OP_BGU */ 358 { "bge", dt_dis_branch }, /* DIF_OP_BGE */ 359 { "bgeu", dt_dis_branch }, /* DIF_OP_BGEU */ 360 { "bl", dt_dis_branch }, /* DIF_OP_BL */ 361 { "blu", dt_dis_branch }, /* DIF_OP_BLU */ 362 { "ble", dt_dis_branch }, /* DIF_OP_BLE */ 363 { "bleu", dt_dis_branch }, /* DIF_OP_BLEU */ 364 { "ldsb", dt_dis_load }, /* DIF_OP_LDSB */ 365 { "ldsh", dt_dis_load }, /* DIF_OP_LDSH */ 366 { "ldsw", dt_dis_load }, /* DIF_OP_LDSW */ 367 { "ldub", dt_dis_load }, /* DIF_OP_LDUB */ 368 { "lduh", dt_dis_load }, /* DIF_OP_LDUH */ 369 { "lduw", dt_dis_load }, /* DIF_OP_LDUW */ 370 { "ldx", dt_dis_load }, /* DIF_OP_LDX */ 371 { "ret", dt_dis_ret }, /* DIF_OP_RET */ 372 { "nop", dt_dis_str }, /* DIF_OP_NOP */ 373 { "setx", dt_dis_setx }, /* DIF_OP_SETX */ 374 { "sets", dt_dis_sets }, /* DIF_OP_SETS */ 375 { "scmp", dt_dis_cmp }, /* DIF_OP_SCMP */ 376 { "ldga", dt_dis_lda }, /* DIF_OP_LDGA */ 377 { "ldgs", dt_dis_ldv }, /* DIF_OP_LDGS */ 378 { "stgs", dt_dis_stv }, /* DIF_OP_STGS */ 379 { "ldta", dt_dis_lda }, /* DIF_OP_LDTA */ 380 { "ldts", dt_dis_ldv }, /* DIF_OP_LDTS */ 381 { "stts", dt_dis_stv }, /* DIF_OP_STTS */ 382 { "sra", dt_dis_log }, /* DIF_OP_SRA */ 383 { "call", dt_dis_call }, /* DIF_OP_CALL */ 384 { "pushtr", dt_dis_pushts }, /* DIF_OP_PUSHTR */ 385 { "pushtv", dt_dis_pushts }, /* DIF_OP_PUSHTV */ 386 { "popts", dt_dis_str }, /* DIF_OP_POPTS */ 387 { "flushts", dt_dis_str }, /* DIF_OP_FLUSHTS */ 388 { "ldgaa", dt_dis_ldv }, /* DIF_OP_LDGAA */ 389 { "ldtaa", dt_dis_ldv }, /* DIF_OP_LDTAA */ 390 { "stgaa", dt_dis_stv }, /* DIF_OP_STGAA */ 391 { "sttaa", dt_dis_stv }, /* DIF_OP_STTAA */ 392 { "ldls", dt_dis_ldv }, /* DIF_OP_LDLS */ 393 { "stls", dt_dis_stv }, /* DIF_OP_STLS */ 394 { "allocs", dt_dis_r1rd }, /* DIF_OP_ALLOCS */ 395 { "copys", dt_dis_log }, /* DIF_OP_COPYS */ 396 { "stb", dt_dis_store }, /* DIF_OP_STB */ 397 { "sth", dt_dis_store }, /* DIF_OP_STH */ 398 { "stw", dt_dis_store }, /* DIF_OP_STW */ 399 { "stx", dt_dis_store }, /* DIF_OP_STX */ 400 { "uldsb", dt_dis_load }, /* DIF_OP_ULDSB */ 401 { "uldsh", dt_dis_load }, /* DIF_OP_ULDSH */ 402 { "uldsw", dt_dis_load }, /* DIF_OP_ULDSW */ 403 { "uldub", dt_dis_load }, /* DIF_OP_ULDUB */ 404 { "ulduh", dt_dis_load }, /* DIF_OP_ULDUH */ 405 { "ulduw", dt_dis_load }, /* DIF_OP_ULDUW */ 406 { "uldx", dt_dis_load }, /* DIF_OP_ULDX */ 407 { "rldsb", dt_dis_load }, /* DIF_OP_RLDSB */ 408 { "rldsh", dt_dis_load }, /* DIF_OP_RLDSH */ 409 { "rldsw", dt_dis_load }, /* DIF_OP_RLDSW */ 410 { "rldub", dt_dis_load }, /* DIF_OP_RLDUB */ 411 { "rlduh", dt_dis_load }, /* DIF_OP_RLDUH */ 412 { "rlduw", dt_dis_load }, /* DIF_OP_RLDUW */ 413 { "rldx", dt_dis_load }, /* DIF_OP_RLDX */ 414 { "xlate", dt_dis_xlate }, /* DIF_OP_XLATE */ 415 { "xlarg", dt_dis_xlate }, /* DIF_OP_XLARG */ 416 }; 417 418 const struct opent *op; 419 ulong_t i = 0; 420 char type[DT_TYPE_NAMELEN]; 421 422 (void) fprintf(fp, "\nDIFO 0x%p returns %s\n", (void *)dp, 423 dt_dis_typestr(&dp->dtdo_rtype, type, sizeof (type))); 424 425 (void) fprintf(fp, "%-3s %-8s %s\n", 426 "OFF", "OPCODE", "INSTRUCTION"); 427 428 for (i = 0; i < dp->dtdo_len; i++) { 429 dif_instr_t instr = dp->dtdo_buf[i]; 430 dif_instr_t opcode = DIF_INSTR_OP(instr); 431 432 if (opcode >= sizeof (optab) / sizeof (optab[0])) 433 opcode = 0; /* force invalid opcode message */ 434 435 op = &optab[opcode]; 436 (void) fprintf(fp, "%02lu: %08x ", i, instr); 437 op->op_func(dp, op->op_name, instr, fp); 438 (void) fprintf(fp, "\n"); 439 } 440 441 if (dp->dtdo_varlen != 0) { 442 (void) fprintf(fp, "\n%-16s %-4s %-3s %-3s %-4s %s\n", 443 "NAME", "ID", "KND", "SCP", "FLAG", "TYPE"); 444 } 445 446 for (i = 0; i < dp->dtdo_varlen; i++) { 447 dtrace_difv_t *v = &dp->dtdo_vartab[i]; 448 char kind[4], scope[4], flags[16] = { 0 }; 449 450 switch (v->dtdv_kind) { 451 case DIFV_KIND_ARRAY: 452 (void) strcpy(kind, "arr"); 453 break; 454 case DIFV_KIND_SCALAR: 455 (void) strcpy(kind, "scl"); 456 break; 457 default: 458 (void) snprintf(kind, sizeof (kind), 459 "%u", v->dtdv_kind); 460 } 461 462 switch (v->dtdv_scope) { 463 case DIFV_SCOPE_GLOBAL: 464 (void) strcpy(scope, "glb"); 465 break; 466 case DIFV_SCOPE_THREAD: 467 (void) strcpy(scope, "tls"); 468 break; 469 case DIFV_SCOPE_LOCAL: 470 (void) strcpy(scope, "loc"); 471 break; 472 default: 473 (void) snprintf(scope, sizeof (scope), 474 "%u", v->dtdv_scope); 475 } 476 477 if (v->dtdv_flags & ~(DIFV_F_REF | DIFV_F_MOD)) { 478 (void) snprintf(flags, sizeof (flags), "/0x%x", 479 v->dtdv_flags & ~(DIFV_F_REF | DIFV_F_MOD)); 480 } 481 482 if (v->dtdv_flags & DIFV_F_REF) 483 (void) strcat(flags, "/r"); 484 if (v->dtdv_flags & DIFV_F_MOD) 485 (void) strcat(flags, "/w"); 486 487 (void) fprintf(fp, "%-16s %-4x %-3s %-3s %-4s %s\n", 488 &dp->dtdo_strtab[v->dtdv_name], 489 v->dtdv_id, kind, scope, flags + 1, 490 dt_dis_typestr(&v->dtdv_type, type, sizeof (type))); 491 } 492 493 if (dp->dtdo_xlmlen != 0) { 494 (void) fprintf(fp, "\n%-4s %-3s %-12s %s\n", 495 "XLID", "ARG", "MEMBER", "TYPE"); 496 } 497 498 for (i = 0; i < dp->dtdo_xlmlen; i++) { 499 dt_node_t *dnp = dp->dtdo_xlmtab[i]; 500 dt_xlator_t *dxp = dnp->dn_membexpr->dn_xlator; 501 (void) fprintf(fp, "%-4u %-3d %-12s %s\n", 502 (uint_t)dxp->dx_id, dxp->dx_arg, dnp->dn_membname, 503 dt_node_type_name(dnp, type, sizeof (type))); 504 } 505 506 if (dp->dtdo_krelen != 0) 507 dt_dis_rtab("KREL", dp, fp, dp->dtdo_kreltab, dp->dtdo_krelen); 508 509 if (dp->dtdo_urelen != 0) 510 dt_dis_rtab("UREL", dp, fp, dp->dtdo_ureltab, dp->dtdo_urelen); 511} 512