Mercurial > hg > graal-compiler
annotate agent/src/share/native/sadis.c @ 10074:e8fbc5fd3440
aot: add/fix some javadoc
| author | Bernhard Urban <bernhard.urban@jku.at> |
|---|---|
| date | Mon, 17 Jun 2013 17:50:09 +0200 |
| parents | 39432a1cefdd |
| children |
| rev | line source |
|---|---|
| 6782 | 1 /* |
| 8750 | 2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| 6782 | 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 "sun_jvm_hotspot_asm_Disassembler.h" | |
| 26 | |
| 27 /* | |
| 28 * This file implements a binding between Java and the hsdis | |
| 29 * dissasembler. It should compile on Linux/Solaris and Windows. | |
| 30 * The only platform dependent pieces of the code for doing | |
| 31 * dlopen/dlsym to find the entry point in hsdis. All the rest is | |
| 32 * standard JNI code. | |
| 33 */ | |
| 34 | |
| 35 #ifdef _WINDOWS | |
| 36 | |
| 37 #define snprintf _snprintf | |
| 38 #define vsnprintf _vsnprintf | |
| 39 | |
| 40 #include <windows.h> | |
| 41 #include <sys/types.h> | |
| 42 #include <sys/stat.h> | |
| 43 #ifdef _DEBUG | |
| 44 #include <crtdbg.h> | |
| 45 #endif | |
| 46 | |
| 47 #else | |
| 48 | |
|
6838
7a40901e0d5c
8000332: SA ClassDump throws exception after permgen removal
minqi
parents:
6782
diff
changeset
|
49 #include <string.h> |
| 6782 | 50 #include <dlfcn.h> |
| 8750 | 51 |
| 52 #ifndef __APPLE__ | |
| 6782 | 53 #include <link.h> |
| 8750 | 54 #endif |
| 6782 | 55 |
| 56 #endif | |
| 57 | |
| 58 #include <limits.h> | |
| 59 #include <stdio.h> | |
| 60 #include <stdarg.h> | |
| 61 #include <stdlib.h> | |
| 62 #include <errno.h> | |
| 63 | |
| 64 #ifdef _WINDOWS | |
| 65 static int getLastErrorString(char *buf, size_t len) | |
| 66 { | |
| 67 long errval; | |
| 68 | |
| 69 if ((errval = GetLastError()) != 0) | |
| 70 { | |
| 71 /* DOS error */ | |
| 72 size_t n = (size_t)FormatMessage( | |
| 73 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, | |
| 74 NULL, | |
| 75 errval, | |
| 76 0, | |
| 77 buf, | |
| 78 (DWORD)len, | |
| 79 NULL); | |
| 80 if (n > 3) { | |
| 81 /* Drop final '.', CR, LF */ | |
| 82 if (buf[n - 1] == '\n') n--; | |
| 83 if (buf[n - 1] == '\r') n--; | |
| 84 if (buf[n - 1] == '.') n--; | |
| 85 buf[n] = '\0'; | |
| 86 } | |
| 87 return (int)n; | |
| 88 } | |
| 89 | |
| 90 if (errno != 0) | |
| 91 { | |
| 92 /* C runtime error that has no corresponding DOS error code */ | |
| 93 const char *s = strerror(errno); | |
| 94 size_t n = strlen(s); | |
| 95 if (n >= len) n = len - 1; | |
| 96 strncpy(buf, s, n); | |
| 97 buf[n] = '\0'; | |
| 98 return (int)n; | |
| 99 } | |
| 100 return 0; | |
| 101 } | |
| 102 #endif /* _WINDOWS */ | |
| 103 | |
| 104 /* | |
| 105 * Class: sun_jvm_hotspot_asm_Disassembler | |
| 106 * Method: load_library | |
| 107 * Signature: (Ljava/lang/String;)L | |
| 108 */ | |
| 109 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_asm_Disassembler_load_1library(JNIEnv * env, | |
| 110 jclass disclass, | |
| 111 jstring jrepath_s, | |
| 112 jstring libname_s) { | |
| 113 uintptr_t func = 0; | |
| 114 const char* error_message = NULL; | |
| 115 jboolean isCopy; | |
| 116 | |
| 117 const char * jrepath = (*env)->GetStringUTFChars(env, jrepath_s, &isCopy); // like $JAVA_HOME/jre/lib/sparc/ | |
| 118 const char * libname = (*env)->GetStringUTFChars(env, libname_s, &isCopy); | |
| 119 char buffer[128]; | |
| 120 | |
| 121 /* Load the hsdis library */ | |
| 122 #ifdef _WINDOWS | |
| 123 HINSTANCE hsdis_handle; | |
| 124 hsdis_handle = LoadLibrary(libname); | |
| 125 if (hsdis_handle == NULL) { | |
| 126 snprintf(buffer, sizeof(buffer), "%s%s", jrepath, libname); | |
| 127 hsdis_handle = LoadLibrary(buffer); | |
| 128 } | |
| 129 if (hsdis_handle != NULL) { | |
| 130 func = (uintptr_t)GetProcAddress(hsdis_handle, "decode_instructions_virtual"); | |
| 131 } | |
| 132 if (func == 0) { | |
| 133 getLastErrorString(buffer, sizeof(buffer)); | |
| 134 error_message = buffer; | |
| 135 } | |
| 136 #else | |
| 137 void* hsdis_handle; | |
| 138 hsdis_handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL); | |
| 139 if (hsdis_handle == NULL) { | |
| 140 snprintf(buffer, sizeof(buffer), "%s%s", jrepath, libname); | |
| 141 hsdis_handle = dlopen(buffer, RTLD_LAZY | RTLD_GLOBAL); | |
| 142 } | |
| 143 if (hsdis_handle != NULL) { | |
| 144 func = (uintptr_t)dlsym(hsdis_handle, "decode_instructions_virtual"); | |
| 145 } | |
| 146 if (func == 0) { | |
| 147 error_message = dlerror(); | |
| 148 } | |
| 149 #endif | |
| 150 | |
| 151 (*env)->ReleaseStringUTFChars(env, libname_s, libname); | |
| 152 (*env)->ReleaseStringUTFChars(env, jrepath_s, jrepath); | |
| 153 | |
| 154 if (func == 0) { | |
| 155 /* Couldn't find entry point. error_message should contain some | |
| 156 * platform dependent error message. | |
| 157 */ | |
| 158 jclass eclass = (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException"); | |
| 159 (*env)->ThrowNew(env, eclass, error_message); | |
| 160 } | |
| 161 return (jlong)func; | |
| 162 } | |
| 163 | |
| 164 /* signature of decode_instructions_virtual from hsdis.h */ | |
| 165 typedef void* (*decode_func)(uintptr_t start_va, uintptr_t end_va, | |
| 166 unsigned char* start, uintptr_t length, | |
| 167 void* (*event_callback)(void*, const char*, void*), | |
| 168 void* event_stream, | |
| 169 int (*printf_callback)(void*, const char*, ...), | |
| 170 void* printf_stream, | |
| 8750 | 171 const char* options, |
| 172 int newline); | |
| 6782 | 173 |
| 174 /* container for call back state when decoding instructions */ | |
| 175 typedef struct { | |
| 176 JNIEnv* env; | |
| 177 jobject dis; | |
| 178 jobject visitor; | |
| 179 jmethodID handle_event; | |
| 180 jmethodID raw_print; | |
| 181 char buffer[4096]; | |
| 182 } decode_env; | |
| 183 | |
| 184 | |
| 185 /* event callback binding to Disassembler.handleEvent */ | |
| 186 static void* event_to_env(void* env_pv, const char* event, void* arg) { | |
| 187 decode_env* denv = (decode_env*)env_pv; | |
| 188 JNIEnv* env = denv->env; | |
| 189 jstring event_string = (*env)->NewStringUTF(env, event); | |
| 190 jlong result = (*env)->CallLongMethod(env, denv->dis, denv->handle_event, denv->visitor, | |
| 191 event_string, (jlong) (uintptr_t)arg); | |
| 192 if ((*env)->ExceptionOccurred(env) != NULL) { | |
| 193 /* ignore exceptions for now */ | |
| 194 (*env)->ExceptionClear(env); | |
| 195 result = 0; | |
| 196 } | |
| 197 return (void*)(uintptr_t)result; | |
| 198 } | |
| 199 | |
| 200 /* printing callback binding to Disassembler.rawPrint */ | |
| 201 static int printf_to_env(void* env_pv, const char* format, ...) { | |
| 202 jstring output; | |
| 203 va_list ap; | |
| 204 int cnt; | |
| 205 decode_env* denv = (decode_env*)env_pv; | |
| 206 JNIEnv* env = denv->env; | |
| 207 size_t flen = strlen(format); | |
| 208 const char* raw = NULL; | |
| 209 | |
| 210 if (flen == 0) return 0; | |
| 211 if (flen < 2 || | |
| 212 strchr(format, '%') == NULL) { | |
| 213 raw = format; | |
| 214 } else if (format[0] == '%' && format[1] == '%' && | |
| 215 strchr(format+2, '%') == NULL) { | |
| 216 // happens a lot on machines with names like %foo | |
| 217 flen--; | |
| 218 raw = format+1; | |
| 219 } | |
| 220 if (raw != NULL) { | |
| 221 jstring output = (*env)->NewStringUTF(env, raw); | |
| 222 (*env)->CallVoidMethod(env, denv->dis, denv->raw_print, denv->visitor, output); | |
| 223 if ((*env)->ExceptionOccurred(env) != NULL) { | |
| 224 /* ignore exceptions for now */ | |
| 225 (*env)->ExceptionClear(env); | |
| 226 } | |
| 227 return (int) flen; | |
| 228 } | |
| 229 va_start(ap, format); | |
| 230 cnt = vsnprintf(denv->buffer, sizeof(denv->buffer), format, ap); | |
| 231 va_end(ap); | |
| 232 | |
| 233 output = (*env)->NewStringUTF(env, denv->buffer); | |
| 234 (*env)->CallVoidMethod(env, denv->dis, denv->raw_print, denv->visitor, output); | |
| 235 if ((*env)->ExceptionOccurred(env) != NULL) { | |
| 236 /* ignore exceptions for now */ | |
| 237 (*env)->ExceptionClear(env); | |
| 238 } | |
| 239 return cnt; | |
| 240 } | |
| 241 | |
| 242 /* | |
| 243 * Class: sun_jvm_hotspot_asm_Disassembler | |
| 244 * Method: decode | |
| 245 * Signature: (Lsun/jvm/hotspot/asm/InstructionVisitor;J[BLjava/lang/String;J)V | |
| 246 */ | |
| 247 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_asm_Disassembler_decode(JNIEnv * env, | |
| 248 jobject dis, | |
| 249 jobject visitor, | |
| 250 jlong startPc, | |
| 251 jbyteArray code, | |
| 252 jstring options_s, | |
| 253 jlong decode_instructions_virtual) { | |
| 254 jboolean isCopy; | |
| 255 jbyte* start = (*env)->GetByteArrayElements(env, code, &isCopy); | |
| 256 jbyte* end = start + (*env)->GetArrayLength(env, code); | |
| 257 const char * options = (*env)->GetStringUTFChars(env, options_s, &isCopy); | |
| 258 jclass disclass = (*env)->GetObjectClass(env, dis); | |
| 259 | |
| 260 decode_env denv; | |
| 261 denv.env = env; | |
| 262 denv.dis = dis; | |
| 263 denv.visitor = visitor; | |
| 264 | |
| 265 /* find Disassembler.handleEvent callback */ | |
| 266 denv.handle_event = (*env)->GetMethodID(env, disclass, "handleEvent", | |
| 267 "(Lsun/jvm/hotspot/asm/InstructionVisitor;Ljava/lang/String;J)J"); | |
| 268 if ((*env)->ExceptionOccurred(env)) { | |
| 269 return; | |
| 270 } | |
| 271 | |
| 272 /* find Disassembler.rawPrint callback */ | |
| 273 denv.raw_print = (*env)->GetMethodID(env, disclass, "rawPrint", | |
| 274 "(Lsun/jvm/hotspot/asm/InstructionVisitor;Ljava/lang/String;)V"); | |
| 275 if ((*env)->ExceptionOccurred(env)) { | |
| 276 return; | |
| 277 } | |
| 278 | |
| 279 /* decode the buffer */ | |
| 280 (*(decode_func)(uintptr_t)decode_instructions_virtual)(startPc, | |
| 281 startPc + end - start, | |
| 282 (unsigned char*)start, | |
| 283 end - start, | |
| 284 &event_to_env, (void*) &denv, | |
| 285 &printf_to_env, (void*) &denv, | |
| 8750 | 286 options, 0 /* newline */); |
| 6782 | 287 |
| 288 /* cleanup */ | |
| 289 (*env)->ReleaseByteArrayElements(env, code, start, JNI_ABORT); | |
| 290 (*env)->ReleaseStringUTFChars(env, options_s, options); | |
| 291 } |