1 /* 2 * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include <stdlib.h> 26 #include <jni.h> 27 #include "libproc.h" 28 29 #if defined(x86_64) && !defined(amd64) 30 #define amd64 1 31 #endif 32 33 #ifdef i386 34 #include "sun_jvm_hotspot_debugger_x86_X86ThreadContext.h" 35 #endif 36 37 #ifdef amd64 38 #include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h" 39 #endif 40 41 #if defined(sparc) || defined(sparcv9) 42 #include "sun_jvm_hotspot_debugger_sparc_SPARCThreadContext.h" 43 #endif 44 45 static jfieldID p_ps_prochandle_ID = 0; 46 static jfieldID threadList_ID = 0; 47 static jfieldID loadObjectList_ID = 0; 48 49 static jmethodID createClosestSymbol_ID = 0; 50 static jmethodID createLoadObject_ID = 0; 51 static jmethodID getThreadForThreadId_ID = 0; 52 static jmethodID listAdd_ID = 0; 53 54 #define CHECK_EXCEPTION_(value) if ((*env)->ExceptionOccurred(env)) { return value; } 55 #define CHECK_EXCEPTION if ((*env)->ExceptionOccurred(env)) { return;} 56 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throw_new_debugger_exception(env, str); return value; } 57 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throw_new_debugger_exception(env, str); return;} 58 59 static void throw_new_debugger_exception(JNIEnv* env, const char* errMsg) { 60 (*env)->ThrowNew(env, (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException"), errMsg); 61 } 62 63 static struct ps_prochandle* get_proc_handle(JNIEnv* env, jobject this_obj) { 64 jlong ptr = (*env)->GetLongField(env, this_obj, p_ps_prochandle_ID); 65 return (struct ps_prochandle*)(intptr_t)ptr; 66 } 67 68 /* 69 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 70 * Method: init0 71 * Signature: ()V 72 */ 73 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_init0 74 (JNIEnv *env, jclass cls) { 75 jclass listClass; 76 77 if (init_libproc(getenv("LIBSAPROC_DEBUG") != NULL) != true) { 78 THROW_NEW_DEBUGGER_EXCEPTION("can't initialize libproc"); 79 } 80 81 // fields we use 82 p_ps_prochandle_ID = (*env)->GetFieldID(env, cls, "p_ps_prochandle", "J"); 83 CHECK_EXCEPTION; 84 threadList_ID = (*env)->GetFieldID(env, cls, "threadList", "Ljava/util/List;"); 85 CHECK_EXCEPTION; 86 loadObjectList_ID = (*env)->GetFieldID(env, cls, "loadObjectList", "Ljava/util/List;"); 87 CHECK_EXCEPTION; 88 89 // methods we use 90 createClosestSymbol_ID = (*env)->GetMethodID(env, cls, "createClosestSymbol", 91 "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;"); 92 CHECK_EXCEPTION; 93 createLoadObject_ID = (*env)->GetMethodID(env, cls, "createLoadObject", 94 "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;"); 95 CHECK_EXCEPTION; 96 getThreadForThreadId_ID = (*env)->GetMethodID(env, cls, "getThreadForThreadId", 97 "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;"); 98 CHECK_EXCEPTION; 99 // java.util.List method we call 100 listClass = (*env)->FindClass(env, "java/util/List"); 101 CHECK_EXCEPTION; 102 listAdd_ID = (*env)->GetMethodID(env, listClass, "add", "(Ljava/lang/Object;)Z"); 103 CHECK_EXCEPTION; 104 } 105 106 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getAddressSize 107 (JNIEnv *env, jclass cls) 108 { 109 #ifdef _LP64 110 return 8; 111 #else 112 return 4; 113 #endif 114 115 } 116 117 118 static void fillThreadsAndLoadObjects(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) { 119 int n = 0, i = 0; 120 121 // add threads 122 n = get_num_threads(ph); 123 for (i = 0; i < n; i++) { 124 jobject thread; 125 jobject threadList; 126 lwpid_t lwpid; 127 128 lwpid = get_lwp_id(ph, i); 129 thread = (*env)->CallObjectMethod(env, this_obj, getThreadForThreadId_ID, 130 (jlong)lwpid); 131 CHECK_EXCEPTION; 132 threadList = (*env)->GetObjectField(env, this_obj, threadList_ID); 133 CHECK_EXCEPTION; 134 (*env)->CallBooleanMethod(env, threadList, listAdd_ID, thread); 135 CHECK_EXCEPTION; 136 } 137 138 // add load objects 139 n = get_num_libs(ph); 140 for (i = 0; i < n; i++) { 141 uintptr_t base; 142 const char* name; 143 jobject loadObject; 144 jobject loadObjectList; 145 146 base = get_lib_base(ph, i); 147 name = get_lib_name(ph, i); 148 loadObject = (*env)->CallObjectMethod(env, this_obj, createLoadObject_ID, 149 (*env)->NewStringUTF(env, name), (jlong)0, (jlong)base); 150 CHECK_EXCEPTION; 151 loadObjectList = (*env)->GetObjectField(env, this_obj, loadObjectList_ID); 152 CHECK_EXCEPTION; 153 (*env)->CallBooleanMethod(env, loadObjectList, listAdd_ID, loadObject); 154 CHECK_EXCEPTION; 155 } 156 } 157 158 /* 159 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 160 * Method: attach0 161 * Signature: (I)V 162 */ 163 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__I 164 (JNIEnv *env, jobject this_obj, jint jpid) { 165 166 struct ps_prochandle* ph; 167 if ( (ph = Pgrab(jpid)) == NULL) { 168 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process"); 169 } 170 (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph); 171 fillThreadsAndLoadObjects(env, this_obj, ph); 172 } 173 174 /* 175 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 176 * Method: attach0 177 * Signature: (Ljava/lang/String;Ljava/lang/String;)V 178 */ 179 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2 180 (JNIEnv *env, jobject this_obj, jstring execName, jstring coreName) { 181 const char *execName_cstr; 182 const char *coreName_cstr; 183 jboolean isCopy; 184 struct ps_prochandle* ph; 185 186 execName_cstr = (*env)->GetStringUTFChars(env, execName, &isCopy); 187 CHECK_EXCEPTION; 188 coreName_cstr = (*env)->GetStringUTFChars(env, coreName, &isCopy); 189 CHECK_EXCEPTION; 190 191 if ( (ph = Pgrab_core(execName_cstr, coreName_cstr)) == NULL) { 192 (*env)->ReleaseStringUTFChars(env, execName, execName_cstr); 193 (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr); 194 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the core file"); 195 } 196 (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph); 197 (*env)->ReleaseStringUTFChars(env, execName, execName_cstr); 198 (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr); 199 fillThreadsAndLoadObjects(env, this_obj, ph); 200 } 201 202 /* 203 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 204 * Method: detach0 205 * Signature: ()V 206 */ 207 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_detach0 208 (JNIEnv *env, jobject this_obj) { 209 struct ps_prochandle* ph = get_proc_handle(env, this_obj); 210 if (ph != NULL) { 211 Prelease(ph); 212 } 213 } 214 215 /* 216 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 217 * Method: lookupByName0 218 * Signature: (Ljava/lang/String;Ljava/lang/String;)J 219 */ 220 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0 221 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) { 222 const char *objectName_cstr, *symbolName_cstr; 223 jlong addr; 224 jboolean isCopy; 225 struct ps_prochandle* ph = get_proc_handle(env, this_obj); 226 227 objectName_cstr = NULL; 228 if (objectName != NULL) { 229 objectName_cstr = (*env)->GetStringUTFChars(env, objectName, &isCopy); 230 CHECK_EXCEPTION_(0); 231 } 232 symbolName_cstr = (*env)->GetStringUTFChars(env, symbolName, &isCopy); 233 CHECK_EXCEPTION_(0); 234 235 addr = (jlong) lookup_symbol(ph, objectName_cstr, symbolName_cstr); 236 237 if (objectName_cstr != NULL) { 238 (*env)->ReleaseStringUTFChars(env, objectName, objectName_cstr); 239 } 240 (*env)->ReleaseStringUTFChars(env, symbolName, symbolName_cstr); 241 return addr; 242 } 243 244 /* 245 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 246 * Method: lookupByAddress0 247 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol; 248 */ 249 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByAddress0 250 (JNIEnv *env, jobject this_obj, jlong addr) { 251 uintptr_t offset; 252 const char* sym = NULL; 253 254 struct ps_prochandle* ph = get_proc_handle(env, this_obj); 255 sym = symbol_for_pc(ph, (uintptr_t) addr, &offset); 256 if (sym == NULL) return 0; 257 return (*env)->CallObjectMethod(env, this_obj, createClosestSymbol_ID, 258 (*env)->NewStringUTF(env, sym), (jlong)offset); 259 } 260 261 /* 262 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal 263 * Method: readBytesFromProcess0 264 * Signature: (JJ)Lsun/jvm/hotspot/debugger/ReadResult; 265 */ 266 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0 267 (JNIEnv *env, jobject this_obj, jlong addr, jlong numBytes) { 268 269 jboolean isCopy; 270 jbyteArray array; 271 jbyte *bufPtr; 272 ps_err_e err; 273 274 array = (*env)->NewByteArray(env, numBytes); 275 CHECK_EXCEPTION_(0); 276 bufPtr = (*env)->GetByteArrayElements(env, array, &isCopy); 277 CHECK_EXCEPTION_(0); 278 279 err = ps_pread(get_proc_handle(env, this_obj), (psaddr_t) (uintptr_t)addr, bufPtr, numBytes); 280 (*env)->ReleaseByteArrayElements(env, array, bufPtr, 0); 281 return (err == PS_OK)? array : 0; 282 } 283 284 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0 285 (JNIEnv *env, jobject this_obj, jint lwp_id) { 286 287 struct reg gregs; 288 jboolean isCopy; 289 jlongArray array; 290 jlong *regs; 291 292 struct ps_prochandle* ph = get_proc_handle(env, this_obj); 293 if (get_lwp_regs(ph, lwp_id, &gregs) != true) { 294 THROW_NEW_DEBUGGER_EXCEPTION_("get_thread_regs failed for a lwp", 0); 295 } 296 297 #undef NPRGREG 298 #ifdef i386 299 #define NPRGREG sun_jvm_hotspot_debugger_x86_X86ThreadContext_NPRGREG 300 #endif 301 #ifdef ia64 302 #define NPRGREG IA64_REG_COUNT 303 #endif 304 #ifdef amd64 305 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG 306 #endif 307 #if defined(sparc) || defined(sparcv9) 308 #define NPRGREG sun_jvm_hotspot_debugger_sparc_SPARCThreadContext_NPRGREG 309 #endif 310 311 array = (*env)->NewLongArray(env, NPRGREG); 312 CHECK_EXCEPTION_(0); 313 regs = (*env)->GetLongArrayElements(env, array, &isCopy); 314 315 #undef REG_INDEX 316 317 #ifdef i386 318 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_x86_X86ThreadContext_##reg 319 320 regs[REG_INDEX(GS)] = (uintptr_t) gregs.r_gs; 321 regs[REG_INDEX(FS)] = (uintptr_t) gregs.r_fs; 322 regs[REG_INDEX(ES)] = (uintptr_t) gregs.r_es; 323 regs[REG_INDEX(DS)] = (uintptr_t) gregs.r_ds; 324 regs[REG_INDEX(EDI)] = (uintptr_t) gregs.r_edi; 325 regs[REG_INDEX(ESI)] = (uintptr_t) gregs.r_esi; 326 regs[REG_INDEX(FP)] = (uintptr_t) gregs.r_ebp; 327 regs[REG_INDEX(SP)] = (uintptr_t) gregs.r_isp; 328 regs[REG_INDEX(EBX)] = (uintptr_t) gregs.r_ebx; 329 regs[REG_INDEX(EDX)] = (uintptr_t) gregs.r_edx; 330 regs[REG_INDEX(ECX)] = (uintptr_t) gregs.r_ecx; 331 regs[REG_INDEX(EAX)] = (uintptr_t) gregs.r_eax; 332 regs[REG_INDEX(PC)] = (uintptr_t) gregs.r_eip; 333 regs[REG_INDEX(CS)] = (uintptr_t) gregs.r_cs; 334 regs[REG_INDEX(SS)] = (uintptr_t) gregs.r_ss; 335 336 #endif /* i386 */ 337 338 #if ia64 339 regs = (*env)->GetLongArrayElements(env, array, &isCopy); 340 int i; 341 for (i = 0; i < NPRGREG; i++ ) { 342 regs[i] = 0xDEADDEAD; 343 } 344 #endif /* ia64 */ 345 346 #ifdef amd64 347 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg 348 349 regs[REG_INDEX(R15)] = gregs.r_r15; 350 regs[REG_INDEX(R14)] = gregs.r_r14; 351 regs[REG_INDEX(R13)] = gregs.r_r13; 352 regs[REG_INDEX(R12)] = gregs.r_r12; 353 regs[REG_INDEX(RBP)] = gregs.r_rbp; 354 regs[REG_INDEX(RBX)] = gregs.r_rbx; 355 regs[REG_INDEX(R11)] = gregs.r_r11; 356 regs[REG_INDEX(R10)] = gregs.r_r10; 357 regs[REG_INDEX(R9)] = gregs.r_r9; 358 regs[REG_INDEX(R8)] = gregs.r_r8; 359 regs[REG_INDEX(RAX)] = gregs.r_rax; 360 regs[REG_INDEX(RCX)] = gregs.r_rcx; 361 regs[REG_INDEX(RDX)] = gregs.r_rdx; 362 regs[REG_INDEX(RSI)] = gregs.r_rsi; 363 regs[REG_INDEX(RDI)] = gregs.r_rdi; 364 regs[REG_INDEX(RIP)] = gregs.r_rip; 365 regs[REG_INDEX(CS)] = gregs.r_cs; 366 regs[REG_INDEX(RSP)] = gregs.r_rsp; 367 regs[REG_INDEX(SS)] = gregs.r_ss; 368 // regs[REG_INDEX(FSBASE)] = gregs.fs_base; 369 // regs[REG_INDEX(GSBASE)] = gregs.gs_base; 370 // regs[REG_INDEX(DS)] = gregs.ds; 371 // regs[REG_INDEX(ES)] = gregs.es; 372 // regs[REG_INDEX(FS)] = gregs.fs; 373 // regs[REG_INDEX(GS)] = gregs.gs; 374 375 #endif /* amd64 */ 376 377 #if defined(sparc) || defined(sparcv9) 378 379 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_sparc_SPARCThreadContext_##reg 380 381 #ifdef _LP64 382 regs[REG_INDEX(R_PSR)] = gregs.tstate; 383 regs[REG_INDEX(R_PC)] = gregs.tpc; 384 regs[REG_INDEX(R_nPC)] = gregs.tnpc; 385 regs[REG_INDEX(R_Y)] = gregs.y; 386 #else 387 regs[REG_INDEX(R_PSR)] = gregs.psr; 388 regs[REG_INDEX(R_PC)] = gregs.pc; 389 regs[REG_INDEX(R_nPC)] = gregs.npc; 390 regs[REG_INDEX(R_Y)] = gregs.y; 391 #endif 392 regs[REG_INDEX(R_G0)] = 0 ; 393 regs[REG_INDEX(R_G1)] = gregs.u_regs[0]; 394 regs[REG_INDEX(R_G2)] = gregs.u_regs[1]; 395 regs[REG_INDEX(R_G3)] = gregs.u_regs[2]; 396 regs[REG_INDEX(R_G4)] = gregs.u_regs[3]; 397 regs[REG_INDEX(R_G5)] = gregs.u_regs[4]; 398 regs[REG_INDEX(R_G6)] = gregs.u_regs[5]; 399 regs[REG_INDEX(R_G7)] = gregs.u_regs[6]; 400 regs[REG_INDEX(R_O0)] = gregs.u_regs[7]; 401 regs[REG_INDEX(R_O1)] = gregs.u_regs[8]; 402 regs[REG_INDEX(R_O2)] = gregs.u_regs[ 9]; 403 regs[REG_INDEX(R_O3)] = gregs.u_regs[10]; 404 regs[REG_INDEX(R_O4)] = gregs.u_regs[11]; 405 regs[REG_INDEX(R_O5)] = gregs.u_regs[12]; 406 regs[REG_INDEX(R_O6)] = gregs.u_regs[13]; 407 regs[REG_INDEX(R_O7)] = gregs.u_regs[14]; 408 #endif /* sparc */ 409 410 411 (*env)->ReleaseLongArrayElements(env, array, regs, JNI_COMMIT); 412 return array; 413 }