Mercurial > hg > graal-compiler
annotate agent/src/share/native/sadis.c @ 6838:7a40901e0d5c
8000332: SA ClassDump throws exception after permgen removal
Summary: In ClassWrite.writeFields(), fields count was mistakenly set to fields length which overflow the array index. Also removed a file which is leftover from 6879063 changeset.
Reviewed-by: coleenp, sspitsyn
Contributed-by: yumin.qi@oracle.com
author | minqi |
---|---|
date | Mon, 08 Oct 2012 16:48:52 -0700 |
parents | 5a98bf7d847b |
children | 79f492f184d0 |
rev | line source |
---|---|
6782 | 1 /* |
2 * Copyright 2012, 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 "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> |
51 #include <link.h> | |
52 | |
53 #endif | |
54 | |
55 #include <limits.h> | |
56 #include <stdio.h> | |
57 #include <stdarg.h> | |
58 #include <stdlib.h> | |
59 #include <errno.h> | |
60 | |
61 #ifdef _WINDOWS | |
62 static int getLastErrorString(char *buf, size_t len) | |
63 { | |
64 long errval; | |
65 | |
66 if ((errval = GetLastError()) != 0) | |
67 { | |
68 /* DOS error */ | |
69 size_t n = (size_t)FormatMessage( | |
70 FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS, | |
71 NULL, | |
72 errval, | |
73 0, | |
74 buf, | |
75 (DWORD)len, | |
76 NULL); | |
77 if (n > 3) { | |
78 /* Drop final '.', CR, LF */ | |
79 if (buf[n - 1] == '\n') n--; | |
80 if (buf[n - 1] == '\r') n--; | |
81 if (buf[n - 1] == '.') n--; | |
82 buf[n] = '\0'; | |
83 } | |
84 return (int)n; | |
85 } | |
86 | |
87 if (errno != 0) | |
88 { | |
89 /* C runtime error that has no corresponding DOS error code */ | |
90 const char *s = strerror(errno); | |
91 size_t n = strlen(s); | |
92 if (n >= len) n = len - 1; | |
93 strncpy(buf, s, n); | |
94 buf[n] = '\0'; | |
95 return (int)n; | |
96 } | |
97 return 0; | |
98 } | |
99 #endif /* _WINDOWS */ | |
100 | |
101 /* | |
102 * Class: sun_jvm_hotspot_asm_Disassembler | |
103 * Method: load_library | |
104 * Signature: (Ljava/lang/String;)L | |
105 */ | |
106 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_asm_Disassembler_load_1library(JNIEnv * env, | |
107 jclass disclass, | |
108 jstring jrepath_s, | |
109 jstring libname_s) { | |
110 uintptr_t func = 0; | |
111 const char* error_message = NULL; | |
112 const char* java_home; | |
113 jboolean isCopy; | |
114 uintptr_t *handle = NULL; | |
115 | |
116 const char * jrepath = (*env)->GetStringUTFChars(env, jrepath_s, &isCopy); // like $JAVA_HOME/jre/lib/sparc/ | |
117 const char * libname = (*env)->GetStringUTFChars(env, libname_s, &isCopy); | |
118 char buffer[128]; | |
119 | |
120 /* Load the hsdis library */ | |
121 #ifdef _WINDOWS | |
122 HINSTANCE hsdis_handle; | |
123 hsdis_handle = LoadLibrary(libname); | |
124 if (hsdis_handle == NULL) { | |
125 snprintf(buffer, sizeof(buffer), "%s%s", jrepath, libname); | |
126 hsdis_handle = LoadLibrary(buffer); | |
127 } | |
128 if (hsdis_handle != NULL) { | |
129 func = (uintptr_t)GetProcAddress(hsdis_handle, "decode_instructions_virtual"); | |
130 } | |
131 if (func == 0) { | |
132 getLastErrorString(buffer, sizeof(buffer)); | |
133 error_message = buffer; | |
134 } | |
135 #else | |
136 void* hsdis_handle; | |
137 hsdis_handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL); | |
138 if (hsdis_handle == NULL) { | |
139 snprintf(buffer, sizeof(buffer), "%s%s", jrepath, libname); | |
140 hsdis_handle = dlopen(buffer, RTLD_LAZY | RTLD_GLOBAL); | |
141 } | |
142 if (hsdis_handle != NULL) { | |
143 func = (uintptr_t)dlsym(hsdis_handle, "decode_instructions_virtual"); | |
144 } | |
145 if (func == 0) { | |
146 error_message = dlerror(); | |
147 } | |
148 #endif | |
149 | |
150 (*env)->ReleaseStringUTFChars(env, libname_s, libname); | |
151 (*env)->ReleaseStringUTFChars(env, jrepath_s, jrepath); | |
152 | |
153 if (func == 0) { | |
154 /* Couldn't find entry point. error_message should contain some | |
155 * platform dependent error message. | |
156 */ | |
157 jclass eclass = (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException"); | |
158 (*env)->ThrowNew(env, eclass, error_message); | |
159 } | |
160 return (jlong)func; | |
161 } | |
162 | |
163 /* signature of decode_instructions_virtual from hsdis.h */ | |
164 typedef void* (*decode_func)(uintptr_t start_va, uintptr_t end_va, | |
165 unsigned char* start, uintptr_t length, | |
166 void* (*event_callback)(void*, const char*, void*), | |
167 void* event_stream, | |
168 int (*printf_callback)(void*, const char*, ...), | |
169 void* printf_stream, | |
170 const char* options); | |
171 | |
172 /* container for call back state when decoding instructions */ | |
173 typedef struct { | |
174 JNIEnv* env; | |
175 jobject dis; | |
176 jobject visitor; | |
177 jmethodID handle_event; | |
178 jmethodID raw_print; | |
179 char buffer[4096]; | |
180 } decode_env; | |
181 | |
182 | |
183 /* event callback binding to Disassembler.handleEvent */ | |
184 static void* event_to_env(void* env_pv, const char* event, void* arg) { | |
185 decode_env* denv = (decode_env*)env_pv; | |
186 JNIEnv* env = denv->env; | |
187 jstring event_string = (*env)->NewStringUTF(env, event); | |
188 jlong result = (*env)->CallLongMethod(env, denv->dis, denv->handle_event, denv->visitor, | |
189 event_string, (jlong) (uintptr_t)arg); | |
190 if ((*env)->ExceptionOccurred(env) != NULL) { | |
191 /* ignore exceptions for now */ | |
192 (*env)->ExceptionClear(env); | |
193 result = 0; | |
194 } | |
195 return (void*)(uintptr_t)result; | |
196 } | |
197 | |
198 /* printing callback binding to Disassembler.rawPrint */ | |
199 static int printf_to_env(void* env_pv, const char* format, ...) { | |
200 jstring output; | |
201 va_list ap; | |
202 int cnt; | |
203 decode_env* denv = (decode_env*)env_pv; | |
204 JNIEnv* env = denv->env; | |
205 size_t flen = strlen(format); | |
206 const char* raw = NULL; | |
207 | |
208 if (flen == 0) return 0; | |
209 if (flen < 2 || | |
210 strchr(format, '%') == NULL) { | |
211 raw = format; | |
212 } else if (format[0] == '%' && format[1] == '%' && | |
213 strchr(format+2, '%') == NULL) { | |
214 // happens a lot on machines with names like %foo | |
215 flen--; | |
216 raw = format+1; | |
217 } | |
218 if (raw != NULL) { | |
219 jstring output = (*env)->NewStringUTF(env, raw); | |
220 (*env)->CallVoidMethod(env, denv->dis, denv->raw_print, denv->visitor, output); | |
221 if ((*env)->ExceptionOccurred(env) != NULL) { | |
222 /* ignore exceptions for now */ | |
223 (*env)->ExceptionClear(env); | |
224 } | |
225 return (int) flen; | |
226 } | |
227 va_start(ap, format); | |
228 cnt = vsnprintf(denv->buffer, sizeof(denv->buffer), format, ap); | |
229 va_end(ap); | |
230 | |
231 output = (*env)->NewStringUTF(env, denv->buffer); | |
232 (*env)->CallVoidMethod(env, denv->dis, denv->raw_print, denv->visitor, output); | |
233 if ((*env)->ExceptionOccurred(env) != NULL) { | |
234 /* ignore exceptions for now */ | |
235 (*env)->ExceptionClear(env); | |
236 } | |
237 return cnt; | |
238 } | |
239 | |
240 /* | |
241 * Class: sun_jvm_hotspot_asm_Disassembler | |
242 * Method: decode | |
243 * Signature: (Lsun/jvm/hotspot/asm/InstructionVisitor;J[BLjava/lang/String;J)V | |
244 */ | |
245 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_asm_Disassembler_decode(JNIEnv * env, | |
246 jobject dis, | |
247 jobject visitor, | |
248 jlong startPc, | |
249 jbyteArray code, | |
250 jstring options_s, | |
251 jlong decode_instructions_virtual) { | |
252 jboolean isCopy; | |
253 jbyte* start = (*env)->GetByteArrayElements(env, code, &isCopy); | |
254 jbyte* end = start + (*env)->GetArrayLength(env, code); | |
255 const char * options = (*env)->GetStringUTFChars(env, options_s, &isCopy); | |
256 jclass disclass = (*env)->GetObjectClass(env, dis); | |
257 | |
258 decode_env denv; | |
259 denv.env = env; | |
260 denv.dis = dis; | |
261 denv.visitor = visitor; | |
262 | |
263 /* find Disassembler.handleEvent callback */ | |
264 denv.handle_event = (*env)->GetMethodID(env, disclass, "handleEvent", | |
265 "(Lsun/jvm/hotspot/asm/InstructionVisitor;Ljava/lang/String;J)J"); | |
266 if ((*env)->ExceptionOccurred(env)) { | |
267 return; | |
268 } | |
269 | |
270 /* find Disassembler.rawPrint callback */ | |
271 denv.raw_print = (*env)->GetMethodID(env, disclass, "rawPrint", | |
272 "(Lsun/jvm/hotspot/asm/InstructionVisitor;Ljava/lang/String;)V"); | |
273 if ((*env)->ExceptionOccurred(env)) { | |
274 return; | |
275 } | |
276 | |
277 /* decode the buffer */ | |
278 (*(decode_func)(uintptr_t)decode_instructions_virtual)(startPc, | |
279 startPc + end - start, | |
280 (unsigned char*)start, | |
281 end - start, | |
282 &event_to_env, (void*) &denv, | |
283 &printf_to_env, (void*) &denv, | |
284 options); | |
285 | |
286 /* cleanup */ | |
287 (*env)->ReleaseByteArrayElements(env, code, start, JNI_ABORT); | |
288 (*env)->ReleaseStringUTFChars(env, options_s, options); | |
289 } |