Move the remaining non-compiler VM code into C++.
Change-Id: Id8693208d2741c55a7b0474d1264f2112019d11f
diff --git a/vm/Init.cpp b/vm/Init.cpp
new file mode 100644
index 0000000..9019157
--- /dev/null
+++ b/vm/Init.cpp
@@ -0,0 +1,1785 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Dalvik initialization, shutdown, and command-line argument processing.
+ */
+#define __STDC_LIMIT_MACROS
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <limits.h>
+#include <ctype.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#include "Dalvik.h"
+#include "test/Test.h"
+#include "mterp/Mterp.h"
+#include "Hash.h"
+
+#define kMinHeapStartSize (1*1024*1024)
+#define kMinHeapSize (2*1024*1024)
+#define kMaxHeapSize (1*1024*1024*1024)
+
+/*
+ * Register VM-agnostic native methods for system classes.
+ */
+extern "C" int jniRegisterSystemMethods(JNIEnv* env);
+
+/* fwd */
+static bool registerSystemNatives(JNIEnv* pEnv);
+static bool initJdwp(void);
+static bool initZygote(void);
+
+
+/* global state */
+struct DvmGlobals gDvm;
+
+/* JIT-specific global state */
+#if defined(WITH_JIT)
+struct DvmJitGlobals gDvmJit;
+
+#if defined(WITH_JIT_TUNING)
+/*
+ * Track the number of hits in the inline cache for predicted chaining.
+ * Use an ugly global variable here since it is accessed in assembly code.
+ */
+int gDvmICHitCount;
+#endif
+
+#endif
+
+/*
+ * Show usage.
+ *
+ * We follow the tradition of unhyphenated compound words.
+ */
+static void usage(const char* progName)
+{
+ dvmFprintf(stderr, "%s: [options] class [argument ...]\n", progName);
+ dvmFprintf(stderr, "%s: [options] -jar file.jar [argument ...]\n",progName);
+ dvmFprintf(stderr, "\n");
+ dvmFprintf(stderr, "The following standard options are recognized:\n");
+ dvmFprintf(stderr, " -classpath classpath\n");
+ dvmFprintf(stderr, " -Dproperty=value\n");
+ dvmFprintf(stderr, " -verbose:tag ('gc', 'jni', or 'class')\n");
+ dvmFprintf(stderr, " -ea[:<package name>... |:<class name>]\n");
+ dvmFprintf(stderr, " -da[:<package name>... |:<class name>]\n");
+ dvmFprintf(stderr, " (-enableassertions, -disableassertions)\n");
+ dvmFprintf(stderr, " -esa\n");
+ dvmFprintf(stderr, " -dsa\n");
+ dvmFprintf(stderr,
+ " (-enablesystemassertions, -disablesystemassertions)\n");
+ dvmFprintf(stderr, " -showversion\n");
+ dvmFprintf(stderr, " -help\n");
+ dvmFprintf(stderr, "\n");
+ dvmFprintf(stderr, "The following extended options are recognized:\n");
+ dvmFprintf(stderr, " -Xrunjdwp:<options>\n");
+ dvmFprintf(stderr, " -Xbootclasspath:bootclasspath\n");
+ dvmFprintf(stderr, " -Xcheck:tag (e.g. 'jni')\n");
+ dvmFprintf(stderr, " -XmsN (min heap, must be multiple of 1K, >= 1MB)\n");
+ dvmFprintf(stderr, " -XmxN (max heap, must be multiple of 1K, >= 2MB)\n");
+ dvmFprintf(stderr, " -XssN (stack size, >= %dKB, <= %dKB)\n",
+ kMinStackSize / 1024, kMaxStackSize / 1024);
+ dvmFprintf(stderr, " -Xverify:{none,remote,all}\n");
+ dvmFprintf(stderr, " -Xrs\n");
+#if defined(WITH_JIT)
+ dvmFprintf(stderr,
+ " -Xint (extended to accept ':portable', ':fast' and ':jit')\n");
+#else
+ dvmFprintf(stderr,
+ " -Xint (extended to accept ':portable' and ':fast')\n");
+#endif
+ dvmFprintf(stderr, "\n");
+ dvmFprintf(stderr, "These are unique to Dalvik:\n");
+ dvmFprintf(stderr, " -Xzygote\n");
+ dvmFprintf(stderr, " -Xdexopt:{none,verified,all,full}\n");
+ dvmFprintf(stderr, " -Xnoquithandler\n");
+ dvmFprintf(stderr,
+ " -Xjnigreflimit:N (must be multiple of 100, >= 200)\n");
+ dvmFprintf(stderr, " -Xjniopts:{warnonly,forcecopy}\n");
+ dvmFprintf(stderr, " -Xjnitrace:substring (eg NativeClass or nativeMethod)\n");
+ dvmFprintf(stderr, " -Xdeadlockpredict:{off,warn,err,abort}\n");
+ dvmFprintf(stderr, " -Xstacktracefile:<filename>\n");
+ dvmFprintf(stderr, " -Xgc:[no]precise\n");
+ dvmFprintf(stderr, " -Xgc:[no]preverify\n");
+ dvmFprintf(stderr, " -Xgc:[no]postverify\n");
+ dvmFprintf(stderr, " -Xgc:[no]concurrent\n");
+ dvmFprintf(stderr, " -Xgc:[no]verifycardtable\n");
+ dvmFprintf(stderr, " -XX:+DisableExplicitGC\n");
+ dvmFprintf(stderr, " -X[no]genregmap\n");
+ dvmFprintf(stderr, " -Xverifyopt:[no]checkmon\n");
+ dvmFprintf(stderr, " -Xcheckdexsum\n");
+#if defined(WITH_JIT)
+ dvmFprintf(stderr, " -Xincludeselectedop\n");
+ dvmFprintf(stderr, " -Xjitop:hexopvalue[-endvalue]"
+ "[,hexopvalue[-endvalue]]*\n");
+ dvmFprintf(stderr, " -Xincludeselectedmethod\n");
+ dvmFprintf(stderr, " -Xjitthreshold:decimalvalue\n");
+ dvmFprintf(stderr, " -Xjitblocking\n");
+ dvmFprintf(stderr, " -Xjitmethod:signature[,signature]* "
+ "(eg Ljava/lang/String\\;replace)\n");
+ dvmFprintf(stderr, " -Xjitcheckcg\n");
+ dvmFprintf(stderr, " -Xjitverbose\n");
+ dvmFprintf(stderr, " -Xjitprofile\n");
+ dvmFprintf(stderr, " -Xjitdisableopt\n");
+ dvmFprintf(stderr, " -Xjitsuspendpoll\n");
+#endif
+ dvmFprintf(stderr, "\n");
+ dvmFprintf(stderr, "Configured with:"
+ " debugger"
+ " profiler"
+ " hprof"
+#ifdef WITH_TRACKREF_CHECKS
+ " trackref_checks"
+#endif
+#ifdef WITH_INSTR_CHECKS
+ " instr_checks"
+#endif
+#ifdef WITH_EXTRA_OBJECT_VALIDATION
+ " extra_object_validation"
+#endif
+#ifdef WITH_EXTRA_GC_CHECKS
+ " extra_gc_checks"
+#endif
+#if !defined(NDEBUG) && defined(WITH_DALVIK_ASSERT)
+ " dalvik_assert"
+#endif
+#ifdef WITH_JNI_STACK_CHECK
+ " jni_stack_check"
+#endif
+#ifdef EASY_GDB
+ " easy_gdb"
+#endif
+#ifdef CHECK_MUTEX
+ " check_mutex"
+#endif
+#ifdef PROFILE_FIELD_ACCESS
+ " profile_field_access"
+#endif
+#if defined(WITH_JIT)
+ " jit(" ARCH_VARIANT ")"
+#endif
+#if defined(WITH_SELF_VERIFICATION)
+ " self_verification"
+#endif
+#if ANDROID_SMP != 0
+ " smp"
+#endif
+ );
+#ifdef DVM_SHOW_EXCEPTION
+ dvmFprintf(stderr, " show_exception=%d", DVM_SHOW_EXCEPTION);
+#endif
+ dvmFprintf(stderr, "\n\n");
+}
+
+/*
+ * Show helpful information on JDWP options.
+ */
+static void showJdwpHelp(void)
+{
+ dvmFprintf(stderr,
+ "Example: -Xrunjdwp:transport=dt_socket,address=8000,server=y\n");
+ dvmFprintf(stderr,
+ "Example: -Xrunjdwp:transport=dt_socket,address=localhost:6500,server=n\n");
+}
+
+/*
+ * Show version and copyright info.
+ */
+static void showVersion(void)
+{
+ dvmFprintf(stdout, "DalvikVM version %d.%d.%d\n",
+ DALVIK_MAJOR_VERSION, DALVIK_MINOR_VERSION, DALVIK_BUG_VERSION);
+ dvmFprintf(stdout,
+ "Copyright (C) 2007 The Android Open Source Project\n\n"
+ "This software is built from source code licensed under the "
+ "Apache License,\n"
+ "Version 2.0 (the \"License\"). You may obtain a copy of the "
+ "License at\n\n"
+ " http://www.apache.org/licenses/LICENSE-2.0\n\n"
+ "See the associated NOTICE file for this software for further "
+ "details.\n");
+}
+
+/*
+ * Parse a string of the form /[0-9]+[kKmMgG]?/, which is used to specify
+ * memory sizes. [kK] indicates kilobytes, [mM] megabytes, and
+ * [gG] gigabytes.
+ *
+ * "s" should point just past the "-Xm?" part of the string.
+ * "min" specifies the lowest acceptable value described by "s".
+ * "div" specifies a divisor, e.g. 1024 if the value must be a multiple
+ * of 1024.
+ *
+ * The spec says the -Xmx and -Xms options must be multiples of 1024. It
+ * doesn't say anything about -Xss.
+ *
+ * Returns 0 (a useless size) if "s" is malformed or specifies a low or
+ * non-evenly-divisible value.
+ */
+static size_t parseMemOption(const char *s, size_t div)
+{
+ /* strtoul accepts a leading [+-], which we don't want,
+ * so make sure our string starts with a decimal digit.
+ */
+ if (isdigit(*s)) {
+ const char *s2;
+ size_t val;
+
+ val = strtoul(s, (char **)&s2, 10);
+ if (s2 != s) {
+ /* s2 should be pointing just after the number.
+ * If this is the end of the string, the user
+ * has specified a number of bytes. Otherwise,
+ * there should be exactly one more character
+ * that specifies a multiplier.
+ */
+ if (*s2 != '\0') {
+ char c;
+
+ /* The remainder of the string is either a single multiplier
+ * character, or nothing to indicate that the value is in
+ * bytes.
+ */
+ c = *s2++;
+ if (*s2 == '\0') {
+ size_t mul;
+
+ if (c == '\0') {
+ mul = 1;
+ } else if (c == 'k' || c == 'K') {
+ mul = 1024;
+ } else if (c == 'm' || c == 'M') {
+ mul = 1024 * 1024;
+ } else if (c == 'g' || c == 'G') {
+ mul = 1024 * 1024 * 1024;
+ } else {
+ /* Unknown multiplier character.
+ */
+ return 0;
+ }
+
+ if (val <= SIZE_MAX / mul) {
+ val *= mul;
+ } else {
+ /* Clamp to a multiple of 1024.
+ */
+ val = SIZE_MAX & ~(1024-1);
+ }
+ } else {
+ /* There's more than one character after the
+ * numeric part.
+ */
+ return 0;
+ }
+ }
+
+ /* The man page says that a -Xm value must be
+ * a multiple of 1024.
+ */
+ if (val % div == 0) {
+ return val;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Handle one of the JDWP name/value pairs.
+ *
+ * JDWP options are:
+ * help: if specified, show help message and bail
+ * transport: may be dt_socket or dt_shmem
+ * address: for dt_socket, "host:port", or just "port" when listening
+ * server: if "y", wait for debugger to attach; if "n", attach to debugger
+ * timeout: how long to wait for debugger to connect / listen
+ *
+ * Useful with server=n (these aren't supported yet):
+ * onthrow=<exception-name>: connect to debugger when exception thrown
+ * onuncaught=y|n: connect to debugger when uncaught exception thrown
+ * launch=<command-line>: launch the debugger itself
+ *
+ * The "transport" option is required, as is "address" if server=n.
+ */
+static bool handleJdwpOption(const char* name, const char* value)
+{
+ if (strcmp(name, "transport") == 0) {
+ if (strcmp(value, "dt_socket") == 0) {
+ gDvm.jdwpTransport = kJdwpTransportSocket;
+ } else if (strcmp(value, "dt_android_adb") == 0) {
+ gDvm.jdwpTransport = kJdwpTransportAndroidAdb;
+ } else {
+ LOGE("JDWP transport '%s' not supported\n", value);
+ return false;
+ }
+ } else if (strcmp(name, "server") == 0) {
+ if (*value == 'n')
+ gDvm.jdwpServer = false;
+ else if (*value == 'y')
+ gDvm.jdwpServer = true;
+ else {
+ LOGE("JDWP option 'server' must be 'y' or 'n'\n");
+ return false;
+ }
+ } else if (strcmp(name, "suspend") == 0) {
+ if (*value == 'n')
+ gDvm.jdwpSuspend = false;
+ else if (*value == 'y')
+ gDvm.jdwpSuspend = true;
+ else {
+ LOGE("JDWP option 'suspend' must be 'y' or 'n'\n");
+ return false;
+ }
+ } else if (strcmp(name, "address") == 0) {
+ /* this is either <port> or <host>:<port> */
+ const char* colon = strchr(value, ':');
+ char* end;
+ long port;
+
+ if (colon != NULL) {
+ free(gDvm.jdwpHost);
+ gDvm.jdwpHost = (char*) malloc(colon - value +1);
+ strncpy(gDvm.jdwpHost, value, colon - value +1);
+ gDvm.jdwpHost[colon-value] = '\0';
+ value = colon + 1;
+ }
+ if (*value == '\0') {
+ LOGE("JDWP address missing port\n");
+ return false;
+ }
+ port = strtol(value, &end, 10);
+ if (*end != '\0') {
+ LOGE("JDWP address has junk in port field '%s'\n", value);
+ return false;
+ }
+ gDvm.jdwpPort = port;
+ } else if (strcmp(name, "launch") == 0 ||
+ strcmp(name, "onthrow") == 0 ||
+ strcmp(name, "oncaught") == 0 ||
+ strcmp(name, "timeout") == 0)
+ {
+ /* valid but unsupported */
+ LOGI("Ignoring JDWP option '%s'='%s'\n", name, value);
+ } else {
+ LOGI("Ignoring unrecognized JDWP option '%s'='%s'\n", name, value);
+ }
+
+ return true;
+}
+
+/*
+ * Parse the latter half of a -Xrunjdwp/-agentlib:jdwp= string, e.g.:
+ * "transport=dt_socket,address=8000,server=y,suspend=n"
+ */
+static bool parseJdwpOptions(const char* str)
+{
+ char* mangle = strdup(str);
+ char* name = mangle;
+ bool result = false;
+
+ /*
+ * Process all of the name=value pairs.
+ */
+ while (true) {
+ char* value;
+ char* comma;
+
+ value = strchr(name, '=');
+ if (value == NULL) {
+ LOGE("JDWP opts: garbage at '%s'\n", name);
+ goto bail;
+ }
+
+ comma = strchr(name, ','); // use name, not value, for safety
+ if (comma != NULL) {
+ if (comma < value) {
+ LOGE("JDWP opts: found comma before '=' in '%s'\n", mangle);
+ goto bail;
+ }
+ *comma = '\0';
+ }
+
+ *value++ = '\0'; // stomp the '='
+
+ if (!handleJdwpOption(name, value))
+ goto bail;
+
+ if (comma == NULL) {
+ /* out of options */
+ break;
+ }
+ name = comma+1;
+ }
+
+ /*
+ * Make sure the combination of arguments makes sense.
+ */
+ if (gDvm.jdwpTransport == kJdwpTransportUnknown) {
+ LOGE("JDWP opts: must specify transport\n");
+ goto bail;
+ }
+ if (!gDvm.jdwpServer && (gDvm.jdwpHost == NULL || gDvm.jdwpPort == 0)) {
+ LOGE("JDWP opts: when server=n, must specify host and port\n");
+ goto bail;
+ }
+ // transport mandatory
+ // outbound server address
+
+ gDvm.jdwpConfigured = true;
+ result = true;
+
+bail:
+ free(mangle);
+ return result;
+}
+
+/*
+ * Handle one of the four kinds of assertion arguments.
+ *
+ * "pkgOrClass" is the last part of an enable/disable line. For a package
+ * the arg looks like "-ea:com.google.fubar...", for a class it looks
+ * like "-ea:com.google.fubar.Wahoo". The string we get starts at the ':'.
+ *
+ * For system assertions (-esa/-dsa), "pkgOrClass" is NULL.
+ *
+ * Multiple instances of these arguments can be specified, e.g. you can
+ * enable assertions for a package and then disable them for one class in
+ * the package.
+ */
+static bool enableAssertions(const char* pkgOrClass, bool enable)
+{
+ AssertionControl* pCtrl = &gDvm.assertionCtrl[gDvm.assertionCtrlCount++];
+ pCtrl->enable = enable;
+
+ if (pkgOrClass == NULL) {
+ /* enable or disable for all system classes */
+ pCtrl->isPackage = false;
+ pCtrl->pkgOrClass = NULL;
+ pCtrl->pkgOrClassLen = 0;
+ } else {
+ if (*pkgOrClass == '\0') {
+ /* global enable/disable for all but system */
+ pCtrl->isPackage = false;
+ pCtrl->pkgOrClass = strdup("");
+ pCtrl->pkgOrClassLen = 0;
+ } else {
+ pCtrl->pkgOrClass = dvmDotToSlash(pkgOrClass+1); // skip ':'
+ if (pCtrl->pkgOrClass == NULL) {
+ /* can happen if class name includes an illegal '/' */
+ LOGW("Unable to process assertion arg '%s'\n", pkgOrClass);
+ return false;
+ }
+
+ int len = strlen(pCtrl->pkgOrClass);
+ if (len >= 3 && strcmp(pCtrl->pkgOrClass + len-3, "///") == 0) {
+ /* mark as package, truncate two of the three slashes */
+ pCtrl->isPackage = true;
+ *(pCtrl->pkgOrClass + len-2) = '\0';
+ pCtrl->pkgOrClassLen = len - 2;
+ } else {
+ /* just a class */
+ pCtrl->isPackage = false;
+ pCtrl->pkgOrClassLen = len;
+ }
+ }
+ }
+
+ return true;
+}
+
+/*
+ * Turn assertions on when requested to do so by the Zygote.
+ *
+ * This is a bit sketchy. We can't (easily) go back and fiddle with all
+ * of the classes that have already been initialized, so this only
+ * affects classes that have yet to be loaded. If some or all assertions
+ * have been enabled through some other means, we don't want to mess with
+ * it here, so we do nothing. Finally, we assume that there's room in
+ * "assertionCtrl" to hold at least one entry; this is guaranteed by the
+ * allocator.
+ *
+ * This must only be called from the main thread during zygote init.
+ */
+void dvmLateEnableAssertions(void)
+{
+ if (gDvm.assertionCtrl == NULL) {
+ LOGD("Not late-enabling assertions: no assertionCtrl array\n");
+ return;
+ } else if (gDvm.assertionCtrlCount != 0) {
+ LOGD("Not late-enabling assertions: some asserts already configured\n");
+ return;
+ }
+ LOGD("Late-enabling assertions\n");
+
+ /* global enable for all but system */
+ AssertionControl* pCtrl = gDvm.assertionCtrl;
+ pCtrl->pkgOrClass = strdup("");
+ pCtrl->pkgOrClassLen = 0;
+ pCtrl->isPackage = false;
+ pCtrl->enable = true;
+ gDvm.assertionCtrlCount = 1;
+}
+
+
+/*
+ * Release memory associated with the AssertionCtrl array.
+ */
+static void freeAssertionCtrl(void)
+{
+ int i;
+
+ for (i = 0; i < gDvm.assertionCtrlCount; i++)
+ free(gDvm.assertionCtrl[i].pkgOrClass);
+ free(gDvm.assertionCtrl);
+}
+
+#if defined(WITH_JIT)
+/* Parse -Xjitop to selectively turn on/off certain opcodes for JIT */
+static void processXjitop(const char *opt)
+{
+ if (opt[7] == ':') {
+ const char *startPtr = &opt[8];
+ char *endPtr = NULL;
+
+ do {
+ long startValue, endValue;
+
+ startValue = strtol(startPtr, &endPtr, 16);
+ if (startPtr != endPtr) {
+ /* Just in case value is out of range */
+ startValue &= 0xff;
+
+ if (*endPtr == '-') {
+ endValue = strtol(endPtr+1, &endPtr, 16);
+ endValue &= 0xff;
+ } else {
+ endValue = startValue;
+ }
+
+ for (; startValue <= endValue; startValue++) {
+ LOGW("Dalvik opcode %x is selected for debugging",
+ (unsigned int) startValue);
+ /* Mark the corresponding bit to 1 */
+ gDvmJit.opList[startValue >> 3] |=
+ 1 << (startValue & 0x7);
+ }
+
+ if (*endPtr == 0) {
+ break;
+ }
+
+ startPtr = endPtr + 1;
+
+ continue;
+ } else {
+ if (*endPtr != 0) {
+ dvmFprintf(stderr,
+ "Warning: Unrecognized opcode value substring "
+ "%s\n", endPtr);
+ }
+ break;
+ }
+ } while (1);
+ } else {
+ int i;
+ for (i = 0; i < 32; i++) {
+ gDvmJit.opList[i] = 0xff;
+ }
+ dvmFprintf(stderr, "Warning: select all opcodes\n");
+ }
+}
+
+/* Parse -Xjitmethod to selectively turn on/off certain methods for JIT */
+static void processXjitmethod(const char *opt)
+{
+ char *buf = strdup(&opt[12]);
+ char *start, *end;
+
+ gDvmJit.methodTable = dvmHashTableCreate(8, NULL);
+
+ start = buf;
+ /*
+ * Break comma-separated method signatures and enter them into the hash
+ * table individually.
+ */
+ do {
+ int hashValue;
+
+ end = strchr(start, ',');
+ if (end) {
+ *end = 0;
+ }
+
+ hashValue = dvmComputeUtf8Hash(start);
+
+ dvmHashTableLookup(gDvmJit.methodTable, hashValue,
+ strdup(start),
+ (HashCompareFunc) strcmp, true);
+ if (end) {
+ start = end + 1;
+ } else {
+ break;
+ }
+ } while (1);
+ free(buf);
+}
+#endif
+
+/*
+ * Process an argument vector full of options. Unlike standard C programs,
+ * argv[0] does not contain the name of the program.
+ *
+ * If "ignoreUnrecognized" is set, we ignore options starting with "-X" or "_"
+ * that we don't recognize. Otherwise, we return with an error as soon as
+ * we see anything we can't identify.
+ *
+ * Returns 0 on success, -1 on failure, and 1 for the special case of
+ * "-version" where we want to stop without showing an error message.
+ */
+static int processOptions(int argc, const char* const argv[],
+ bool ignoreUnrecognized)
+{
+ int i;
+
+ LOGV("VM options (%d):\n", argc);
+ for (i = 0; i < argc; i++)
+ LOGV(" %d: '%s'\n", i, argv[i]);
+
+ /*
+ * Over-allocate AssertionControl array for convenience. If allocated,
+ * the array must be able to hold at least one entry, so that the
+ * zygote-time activation can do its business.
+ */
+ assert(gDvm.assertionCtrl == NULL);
+ if (argc > 0) {
+ gDvm.assertionCtrl =
+ (AssertionControl*) malloc(sizeof(AssertionControl) * argc);
+ if (gDvm.assertionCtrl == NULL)
+ return -1;
+ assert(gDvm.assertionCtrlCount == 0);
+ }
+
+ for (i = 0; i < argc; i++) {
+ if (strcmp(argv[i], "-help") == 0) {
+ /* show usage and stop */
+ return -1;
+
+ } else if (strcmp(argv[i], "-version") == 0) {
+ /* show version and stop */
+ showVersion();
+ return 1;
+ } else if (strcmp(argv[i], "-showversion") == 0) {
+ /* show version and continue */
+ showVersion();
+
+ } else if (strcmp(argv[i], "-classpath") == 0 ||
+ strcmp(argv[i], "-cp") == 0)
+ {
+ /* set classpath */
+ if (i == argc-1) {
+ dvmFprintf(stderr, "Missing classpath path list\n");
+ return -1;
+ }
+ free(gDvm.classPathStr); /* in case we have compiled-in default */
+ gDvm.classPathStr = strdup(argv[++i]);
+
+ } else if (strncmp(argv[i], "-Xbootclasspath:",
+ sizeof("-Xbootclasspath:")-1) == 0)
+ {
+ /* set bootclasspath */
+ const char* path = argv[i] + sizeof("-Xbootclasspath:")-1;
+
+ if (*path == '\0') {
+ dvmFprintf(stderr, "Missing bootclasspath path list\n");
+ return -1;
+ }
+ free(gDvm.bootClassPathStr);
+ gDvm.bootClassPathStr = strdup(path);
+
+ } else if (strncmp(argv[i], "-Xbootclasspath/a:",
+ sizeof("-Xbootclasspath/a:")-1) == 0) {
+ const char* appPath = argv[i] + sizeof("-Xbootclasspath/a:")-1;
+
+ if (*(appPath) == '\0') {
+ dvmFprintf(stderr, "Missing appending bootclasspath path list\n");
+ return -1;
+ }
+ char* allPath;
+
+ if (asprintf(&allPath, "%s:%s", gDvm.bootClassPathStr, appPath) < 0) {
+ dvmFprintf(stderr, "Can't append to bootclasspath path list\n");
+ return -1;
+ }
+ free(gDvm.bootClassPathStr);
+ gDvm.bootClassPathStr = allPath;
+
+ } else if (strncmp(argv[i], "-Xbootclasspath/p:",
+ sizeof("-Xbootclasspath/p:")-1) == 0) {
+ const char* prePath = argv[i] + sizeof("-Xbootclasspath/p:")-1;
+
+ if (*(prePath) == '\0') {
+ dvmFprintf(stderr, "Missing prepending bootclasspath path list\n");
+ return -1;
+ }
+ char* allPath;
+
+ if (asprintf(&allPath, "%s:%s", prePath, gDvm.bootClassPathStr) < 0) {
+ dvmFprintf(stderr, "Can't prepend to bootclasspath path list\n");
+ return -1;
+ }
+ free(gDvm.bootClassPathStr);
+ gDvm.bootClassPathStr = allPath;
+
+ } else if (strncmp(argv[i], "-D", 2) == 0) {
+ /* Properties are handled in managed code. We just check syntax. */
+ if (strchr(argv[i], '=') == NULL) {
+ dvmFprintf(stderr, "Bad system property setting: \"%s\"\n",
+ argv[i]);
+ return -1;
+ }
+ if (arrayAdd(gDvm.properties, strdup(argv[i] + 2)) == -1) {
+ dvmFprintf(stderr, "Can't set system property: \"%s\"\n",
+ argv[i]);
+ return -1;
+ }
+
+ } else if (strcmp(argv[i], "-jar") == 0) {
+ // TODO: handle this; name of jar should be in argv[i+1]
+ dvmFprintf(stderr, "-jar not yet handled\n");
+ assert(false);
+
+ } else if (strncmp(argv[i], "-Xms", 4) == 0) {
+ size_t val = parseMemOption(argv[i]+4, 1024);
+ if (val != 0) {
+ if (val >= kMinHeapStartSize && val <= kMaxHeapSize) {
+ gDvm.heapStartingSize = val;
+ } else {
+ dvmFprintf(stderr,
+ "Invalid -Xms '%s', range is %dKB to %dKB\n",
+ argv[i], kMinHeapStartSize/1024, kMaxHeapSize/1024);
+ return -1;
+ }
+ } else {
+ dvmFprintf(stderr, "Invalid -Xms option '%s'\n", argv[i]);
+ return -1;
+ }
+ } else if (strncmp(argv[i], "-Xmx", 4) == 0) {
+ size_t val = parseMemOption(argv[i]+4, 1024);
+ if (val != 0) {
+ if (val >= kMinHeapSize && val <= kMaxHeapSize) {
+ gDvm.heapMaximumSize = val;
+ } else {
+ dvmFprintf(stderr,
+ "Invalid -Xmx '%s', range is %dKB to %dKB\n",
+ argv[i], kMinHeapSize/1024, kMaxHeapSize/1024);
+ return -1;
+ }
+ } else {
+ dvmFprintf(stderr, "Invalid -Xmx option '%s'\n", argv[i]);
+ return -1;
+ }
+ } else if (strncmp(argv[i], "-XX:HeapGrowthLimit=", 20) == 0) {
+ size_t val = parseMemOption(argv[i] + 20, 1024);
+ if (val != 0) {
+ gDvm.heapGrowthLimit = val;
+ } else {
+ dvmFprintf(stderr, "Invalid -XX:HeapGrowthLimit option '%s'\n", argv[i]);
+ return -1;
+ }
+ } else if (strncmp(argv[i], "-Xss", 4) == 0) {
+ size_t val = parseMemOption(argv[i]+4, 1);
+ if (val != 0) {
+ if (val >= kMinStackSize && val <= kMaxStackSize) {
+ gDvm.stackSize = val;
+ } else {
+ dvmFprintf(stderr, "Invalid -Xss '%s', range is %d to %d\n",
+ argv[i], kMinStackSize, kMaxStackSize);
+ return -1;
+ }
+ } else {
+ dvmFprintf(stderr, "Invalid -Xss option '%s'\n", argv[i]);
+ return -1;
+ }
+
+ } else if (strncmp(argv[i], "-XX:+DisableExplicitGC", 22) == 0) {
+ gDvm.disableExplicitGc = true;
+ } else if (strcmp(argv[i], "-verbose") == 0 ||
+ strcmp(argv[i], "-verbose:class") == 0)
+ {
+ // JNI spec says "-verbose:gc,class" is valid, but cmd line
+ // doesn't work that way; may want to support.
+ gDvm.verboseClass = true;
+ } else if (strcmp(argv[i], "-verbose:jni") == 0) {
+ gDvm.verboseJni = true;
+ } else if (strcmp(argv[i], "-verbose:gc") == 0) {
+ gDvm.verboseGc = true;
+ } else if (strcmp(argv[i], "-verbose:shutdown") == 0) {
+ gDvm.verboseShutdown = true;
+
+ } else if (strncmp(argv[i], "-enableassertions", 17) == 0) {
+ enableAssertions(argv[i] + 17, true);
+ } else if (strncmp(argv[i], "-ea", 3) == 0) {
+ enableAssertions(argv[i] + 3, true);
+ } else if (strncmp(argv[i], "-disableassertions", 18) == 0) {
+ enableAssertions(argv[i] + 18, false);
+ } else if (strncmp(argv[i], "-da", 3) == 0) {
+ enableAssertions(argv[i] + 3, false);
+ } else if (strcmp(argv[i], "-enablesystemassertions") == 0 ||
+ strcmp(argv[i], "-esa") == 0)
+ {
+ enableAssertions(NULL, true);
+ } else if (strcmp(argv[i], "-disablesystemassertions") == 0 ||
+ strcmp(argv[i], "-dsa") == 0)
+ {
+ enableAssertions(NULL, false);
+
+ } else if (strncmp(argv[i], "-Xcheck:jni", 11) == 0) {
+ /* nothing to do now -- was handled during JNI init */
+
+ } else if (strcmp(argv[i], "-Xdebug") == 0) {
+ /* accept but ignore */
+
+ } else if (strncmp(argv[i], "-Xrunjdwp:", 10) == 0 ||
+ strncmp(argv[i], "-agentlib:jdwp=", 15) == 0)
+ {
+ const char* tail;
+
+ if (argv[i][1] == 'X')
+ tail = argv[i] + 10;
+ else
+ tail = argv[i] + 15;
+
+ if (strncmp(tail, "help", 4) == 0 || !parseJdwpOptions(tail)) {
+ showJdwpHelp();
+ return 1;
+ }
+ } else if (strcmp(argv[i], "-Xrs") == 0) {
+ gDvm.reduceSignals = true;
+ } else if (strcmp(argv[i], "-Xnoquithandler") == 0) {
+ /* disables SIGQUIT handler thread while still blocking SIGQUIT */
+ /* (useful if we don't want thread but system still signals us) */
+ gDvm.noQuitHandler = true;
+ } else if (strcmp(argv[i], "-Xzygote") == 0) {
+ gDvm.zygote = true;
+#if defined(WITH_JIT)
+ gDvmJit.runningInAndroidFramework = true;
+#endif
+ } else if (strncmp(argv[i], "-Xdexopt:", 9) == 0) {
+ if (strcmp(argv[i] + 9, "none") == 0)
+ gDvm.dexOptMode = OPTIMIZE_MODE_NONE;
+ else if (strcmp(argv[i] + 9, "verified") == 0)
+ gDvm.dexOptMode = OPTIMIZE_MODE_VERIFIED;
+ else if (strcmp(argv[i] + 9, "all") == 0)
+ gDvm.dexOptMode = OPTIMIZE_MODE_ALL;
+ else if (strcmp(argv[i] + 9, "full") == 0)
+ gDvm.dexOptMode = OPTIMIZE_MODE_FULL;
+ else {
+ dvmFprintf(stderr, "Unrecognized dexopt option '%s'\n",argv[i]);
+ return -1;
+ }
+ } else if (strncmp(argv[i], "-Xverify:", 9) == 0) {
+ if (strcmp(argv[i] + 9, "none") == 0)
+ gDvm.classVerifyMode = VERIFY_MODE_NONE;
+ else if (strcmp(argv[i] + 9, "remote") == 0)
+ gDvm.classVerifyMode = VERIFY_MODE_REMOTE;
+ else if (strcmp(argv[i] + 9, "all") == 0)
+ gDvm.classVerifyMode = VERIFY_MODE_ALL;
+ else {
+ dvmFprintf(stderr, "Unrecognized verify option '%s'\n",argv[i]);
+ return -1;
+ }
+ } else if (strncmp(argv[i], "-Xjnigreflimit:", 15) == 0) {
+ int lim = atoi(argv[i] + 15);
+ if (lim < 200 || (lim % 100) != 0) {
+ dvmFprintf(stderr, "Bad value for -Xjnigreflimit: '%s'\n",
+ argv[i]+15);
+ return -1;
+ }
+ gDvm.jniGrefLimit = lim;
+ } else if (strncmp(argv[i], "-Xjnitrace:", 11) == 0) {
+ gDvm.jniTrace = strdup(argv[i] + 11);
+ } else if (strcmp(argv[i], "-Xlog-stdio") == 0) {
+ gDvm.logStdio = true;
+
+ } else if (strncmp(argv[i], "-Xint", 5) == 0) {
+ if (argv[i][5] == ':') {
+ if (strcmp(argv[i] + 6, "portable") == 0)
+ gDvm.executionMode = kExecutionModeInterpPortable;
+ else if (strcmp(argv[i] + 6, "fast") == 0)
+ gDvm.executionMode = kExecutionModeInterpFast;
+#ifdef WITH_JIT
+ else if (strcmp(argv[i] + 6, "jit") == 0)
+ gDvm.executionMode = kExecutionModeJit;
+#endif
+ else {
+ dvmFprintf(stderr,
+ "Warning: Unrecognized interpreter mode %s\n",argv[i]);
+ /* keep going */
+ }
+ } else {
+ /* disable JIT if it was enabled by default */
+ gDvm.executionMode = kExecutionModeInterpFast;
+ }
+
+ } else if (strncmp(argv[i], "-Xlockprofthreshold:", 20) == 0) {
+ gDvm.lockProfThreshold = atoi(argv[i] + 20);
+
+#ifdef WITH_JIT
+ } else if (strncmp(argv[i], "-Xjitop", 7) == 0) {
+ processXjitop(argv[i]);
+ } else if (strncmp(argv[i], "-Xjitmethod", 11) == 0) {
+ processXjitmethod(argv[i]);
+ } else if (strncmp(argv[i], "-Xjitblocking", 13) == 0) {
+ gDvmJit.blockingMode = true;
+ } else if (strncmp(argv[i], "-Xjitthreshold:", 15) == 0) {
+ gDvmJit.threshold = atoi(argv[i] + 15);
+ } else if (strncmp(argv[i], "-Xincludeselectedop", 19) == 0) {
+ gDvmJit.includeSelectedOp = true;
+ } else if (strncmp(argv[i], "-Xincludeselectedmethod", 23) == 0) {
+ gDvmJit.includeSelectedMethod = true;
+ } else if (strncmp(argv[i], "-Xjitcheckcg", 12) == 0) {
+ gDvmJit.checkCallGraph = true;
+ /* Need to enable blocking mode due to stack crawling */
+ gDvmJit.blockingMode = true;
+ } else if (strncmp(argv[i], "-Xjitverbose", 12) == 0) {
+ gDvmJit.printMe = true;
+ } else if (strncmp(argv[i], "-Xjitprofile", 12) == 0) {
+ gDvmJit.profileMode = kTraceProfilingContinuous;
+ } else if (strncmp(argv[i], "-Xjitdisableopt", 15) == 0) {
+ /* Disable selected optimizations */
+ if (argv[i][15] == ':') {
+ sscanf(argv[i] + 16, "%x", &gDvmJit.disableOpt);
+ /* Disable all optimizations */
+ } else {
+ gDvmJit.disableOpt = -1;
+ }
+ } else if (strncmp(argv[i], "-Xjitsuspendpoll", 16) == 0) {
+ gDvmJit.genSuspendPoll = true;
+#endif
+
+ } else if (strncmp(argv[i], "-Xstacktracefile:", 17) == 0) {
+ gDvm.stackTraceFile = strdup(argv[i]+17);
+
+ } else if (strcmp(argv[i], "-Xgenregmap") == 0) {
+ gDvm.generateRegisterMaps = true;
+ } else if (strcmp(argv[i], "-Xnogenregmap") == 0) {
+ gDvm.generateRegisterMaps = false;
+
+ } else if (strcmp(argv[i], "Xverifyopt:checkmon") == 0) {
+ gDvm.monitorVerification = true;
+ } else if (strcmp(argv[i], "Xverifyopt:nocheckmon") == 0) {
+ gDvm.monitorVerification = false;
+
+ } else if (strncmp(argv[i], "-Xgc:", 5) == 0) {
+ if (strcmp(argv[i] + 5, "precise") == 0)
+ gDvm.preciseGc = true;
+ else if (strcmp(argv[i] + 5, "noprecise") == 0)
+ gDvm.preciseGc = false;
+ else if (strcmp(argv[i] + 5, "preverify") == 0)
+ gDvm.preVerify = true;
+ else if (strcmp(argv[i] + 5, "nopreverify") == 0)
+ gDvm.preVerify = false;
+ else if (strcmp(argv[i] + 5, "postverify") == 0)
+ gDvm.postVerify = true;
+ else if (strcmp(argv[i] + 5, "nopostverify") == 0)
+ gDvm.postVerify = false;
+ else if (strcmp(argv[i] + 5, "concurrent") == 0)
+ gDvm.concurrentMarkSweep = true;
+ else if (strcmp(argv[i] + 5, "noconcurrent") == 0)
+ gDvm.concurrentMarkSweep = false;
+ else if (strcmp(argv[i] + 5, "verifycardtable") == 0)
+ gDvm.verifyCardTable = true;
+ else if (strcmp(argv[i] + 5, "noverifycardtable") == 0)
+ gDvm.verifyCardTable = false;
+ else {
+ dvmFprintf(stderr, "Bad value for -Xgc");
+ return -1;
+ }
+ LOGV("Precise GC configured %s\n", gDvm.preciseGc ? "ON" : "OFF");
+
+ } else if (strcmp(argv[i], "-Xcheckdexsum") == 0) {
+ gDvm.verifyDexChecksum = true;
+
+ } else if (strcmp(argv[i], "-Xprofile:wallclock") == 0) {
+ gDvm.profilerWallClock = true;
+
+ } else {
+ if (!ignoreUnrecognized) {
+ dvmFprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
+ return -1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Set defaults for fields altered or modified by arguments.
+ *
+ * Globals are initialized to 0 (a/k/a NULL or false).
+ */
+static void setCommandLineDefaults()
+{
+ const char* envStr;
+
+ envStr = getenv("CLASSPATH");
+ if (envStr != NULL)
+ gDvm.classPathStr = strdup(envStr);
+ else
+ gDvm.classPathStr = strdup(".");
+ envStr = getenv("BOOTCLASSPATH");
+ if (envStr != NULL)
+ gDvm.bootClassPathStr = strdup(envStr);
+ else
+ gDvm.bootClassPathStr = strdup(".");
+
+ /* Defaults overridden by -Xms and -Xmx.
+ * TODO: base these on a system or application-specific default
+ */
+ gDvm.heapStartingSize = 2 * 1024 * 1024; // Spec says 16MB; too big for us.
+ gDvm.heapMaximumSize = 16 * 1024 * 1024; // Spec says 75% physical mem
+ gDvm.heapGrowthLimit = 0; // 0 means no growth limit
+ gDvm.stackSize = kDefaultStackSize;
+
+ gDvm.concurrentMarkSweep = true;
+
+ /* gDvm.jdwpSuspend = true; */
+
+ /* allowed unless zygote config doesn't allow it */
+ gDvm.jdwpAllowed = true;
+
+ /* default verification and optimization modes */
+ gDvm.classVerifyMode = VERIFY_MODE_ALL;
+ gDvm.dexOptMode = OPTIMIZE_MODE_VERIFIED;
+ gDvm.monitorVerification = false;
+ gDvm.generateRegisterMaps = true;
+ gDvm.registerMapMode = kRegisterMapModeTypePrecise;
+
+ /*
+ * Default execution mode.
+ *
+ * This should probably interact with the mterp code somehow, e.g. if
+ * we know we're using the "desktop" build we should probably be
+ * using "portable" rather than "fast".
+ */
+#if defined(WITH_JIT)
+ gDvm.executionMode = kExecutionModeJit;
+#else
+ gDvm.executionMode = kExecutionModeInterpFast;
+#endif
+
+ /*
+ * SMP support is a compile-time define, but we may want to have
+ * dexopt target a differently-configured device.
+ */
+ gDvm.dexOptForSmp = (ANDROID_SMP != 0);
+}
+
+
+/*
+ * Handle a SIGBUS, which frequently occurs because somebody replaced an
+ * optimized DEX file out from under us.
+ */
+static void busCatcher(int signum, siginfo_t* info, void* context)
+{
+ void* addr = info->si_addr;
+
+ LOGE("Caught a SIGBUS (%d), addr=%p\n", signum, addr);
+
+ /*
+ * If we return at this point the SIGBUS just keeps happening, so we
+ * remove the signal handler and allow it to kill us. TODO: restore
+ * the original, which points to a debuggerd stub; if we don't then
+ * debuggerd won't be notified.
+ */
+ signal(SIGBUS, SIG_DFL);
+}
+
+/*
+ * Configure signals. We need to block SIGQUIT so that the signal only
+ * reaches the dump-stack-trace thread.
+ *
+ * This can be disabled with the "-Xrs" flag.
+ */
+static void blockSignals()
+{
+ sigset_t mask;
+ int cc;
+
+ sigemptyset(&mask);
+ sigaddset(&mask, SIGQUIT);
+ sigaddset(&mask, SIGUSR1); // used to initiate heap dump
+#if defined(WITH_JIT) && defined(WITH_JIT_TUNING)
+ sigaddset(&mask, SIGUSR2); // used to investigate JIT internals
+#endif
+ //sigaddset(&mask, SIGPIPE);
+ cc = sigprocmask(SIG_BLOCK, &mask, NULL);
+ assert(cc == 0);
+
+ if (false) {
+ /* TODO: save the old sigaction in a global */
+ struct sigaction sa;
+ memset(&sa, 0, sizeof(sa));
+ sa.sa_sigaction = busCatcher;
+ sa.sa_flags = SA_SIGINFO;
+ cc = sigaction(SIGBUS, &sa, NULL);
+ assert(cc == 0);
+ }
+}
+
+/*
+ * VM initialization. Pass in any options provided on the command line.
+ * Do not pass in the class name or the options for the class.
+ *
+ * Returns 0 on success.
+ */
+int dvmStartup(int argc, const char* const argv[], bool ignoreUnrecognized,
+ JNIEnv* pEnv)
+{
+ int i, cc;
+
+ assert(gDvm.initializing);
+
+ LOGV("VM init args (%d):\n", argc);
+ for (i = 0; i < argc; i++)
+ LOGV(" %d: '%s'\n", i, argv[i]);
+
+ /* prep properties storage */
+ if (!dvmPropertiesStartup())
+ goto fail;
+
+ setCommandLineDefaults();
+
+ /*
+ * Process the option flags (if any).
+ */
+ cc = processOptions(argc, argv, ignoreUnrecognized);
+ if (cc != 0) {
+ if (cc < 0) {
+ dvmFprintf(stderr, "\n");
+ usage("dalvikvm");
+ }
+ goto fail;
+ }
+
+#if WITH_EXTRA_GC_CHECKS > 1
+ /* only "portable" interp has the extra goodies */
+ if (gDvm.executionMode != kExecutionModeInterpPortable) {
+ LOGI("Switching to 'portable' interpreter for GC checks\n");
+ gDvm.executionMode = kExecutionModeInterpPortable;
+ }
+#endif
+
+ /* Configure group scheduling capabilities */
+ if (!access("/dev/cpuctl/tasks", F_OK)) {
+ LOGV("Using kernel group scheduling");
+ gDvm.kernelGroupScheduling = 1;
+ } else {
+ LOGV("Using kernel scheduler policies");
+ }
+
+ /* configure signal handling */
+ if (!gDvm.reduceSignals)
+ blockSignals();
+
+ /* verify system page size */
+ if (sysconf(_SC_PAGESIZE) != SYSTEM_PAGE_SIZE) {
+ LOGE("ERROR: expected page size %d, got %d\n",
+ SYSTEM_PAGE_SIZE, (int) sysconf(_SC_PAGESIZE));
+ goto fail;
+ }
+
+ /* mterp setup */
+ LOGV("Using executionMode %d\n", gDvm.executionMode);
+ dvmCheckAsmConstants();
+
+ /*
+ * Initialize components.
+ */
+ if (!dvmAllocTrackerStartup())
+ goto fail;
+ if (!dvmGcStartup())
+ goto fail;
+ if (!dvmThreadStartup())
+ goto fail;
+ if (!dvmInlineNativeStartup())
+ goto fail;
+ if (!dvmRegisterMapStartup())
+ goto fail;
+ if (!dvmInstanceofStartup())
+ goto fail;
+ if (!dvmClassStartup())
+ goto fail;
+
+ /*
+ * At this point, the system is guaranteed to be sufficiently
+ * initialized that we can look up classes and class members. This
+ * call populates the gDvm instance with all the class and member
+ * references that the VM wants to use directly.
+ */
+ if (!dvmFindRequiredClassesAndMembers())
+ goto fail;
+
+ if (!dvmStringInternStartup())
+ goto fail;
+ if (!dvmNativeStartup())
+ goto fail;
+ if (!dvmInternalNativeStartup())
+ goto fail;
+ if (!dvmJniStartup())
+ goto fail;
+ if (!dvmProfilingStartup())
+ goto fail;
+
+ /*
+ * Create a table of methods for which we will substitute an "inline"
+ * version for performance.
+ */
+ if (!dvmCreateInlineSubsTable())
+ goto fail;
+
+ /*
+ * Miscellaneous class library validation.
+ */
+ if (!dvmValidateBoxClasses())
+ goto fail;
+
+ /*
+ * Do the last bits of Thread struct initialization we need to allow
+ * JNI calls to work.
+ */
+ if (!dvmPrepMainForJni(pEnv))
+ goto fail;
+
+ /*
+ * Explicitly initialize java.lang.Class. This doesn't happen
+ * automatically because it's allocated specially (it's an instance
+ * of itself). Must happen before registration of system natives,
+ * which make some calls that throw assertions if the classes they
+ * operate on aren't initialized.
+ */
+ if (!dvmInitClass(gDvm.classJavaLangClass))
+ goto fail;
+
+ /*
+ * Register the system native methods, which are registered through JNI.
+ */
+ if (!registerSystemNatives(pEnv))
+ goto fail;
+
+ /*
+ * Do some "late" initialization for the memory allocator. This may
+ * allocate storage and initialize classes.
+ */
+ if (!dvmCreateStockExceptions())
+ goto fail;
+
+ /*
+ * At this point, the VM is in a pretty good state. Finish prep on
+ * the main thread (specifically, create a java.lang.Thread object to go
+ * along with our Thread struct). Note we will probably be executing
+ * some interpreted class initializer code in here.
+ */
+ if (!dvmPrepMainThread())
+ goto fail;
+
+ /*
+ * Make sure we haven't accumulated any tracked references. The main
+ * thread should be starting with a clean slate.
+ */
+ if (dvmReferenceTableEntries(&dvmThreadSelf()->internalLocalRefTable) != 0)
+ {
+ LOGW("Warning: tracked references remain post-initialization\n");
+ dvmDumpReferenceTable(&dvmThreadSelf()->internalLocalRefTable, "MAIN");
+ }
+
+ /* general debugging setup */
+ if (!dvmDebuggerStartup())
+ goto fail;
+
+ if (!dvmGcStartupClasses())
+ goto fail;
+
+ /*
+ * Init for either zygote mode or non-zygote mode. The key difference
+ * is that we don't start any additional threads in Zygote mode.
+ */
+ if (gDvm.zygote) {
+ if (!initZygote())
+ goto fail;
+ } else {
+ if (!dvmInitAfterZygote())
+ goto fail;
+ }
+
+
+#ifndef NDEBUG
+ if (!dvmTestHash())
+ LOGE("dvmTestHash FAILED\n");
+ if (false /*noisy!*/ && !dvmTestIndirectRefTable())
+ LOGE("dvmTestIndirectRefTable FAILED\n");
+#endif
+
+ if (dvmCheckException(dvmThreadSelf())) {
+ LOGE("Exception pending at end of VM initialization\n");
+ dvmLogExceptionStackTrace();
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ dvmShutdown();
+ return 1;
+}
+
+/*
+ * Register java.* natives from our class libraries. We need to do
+ * this after we're ready for JNI registration calls, but before we
+ * do any class initialization.
+ *
+ * If we get this wrong, we will blow up in the ThreadGroup class init if
+ * interpreted code makes any reference to System. It will likely do this
+ * since it wants to do some java.io.File setup (e.g. for static in/out/err).
+ *
+ * We need to have gDvm.initializing raised here so that JNI FindClass
+ * won't try to use the system/application class loader.
+ */
+static bool registerSystemNatives(JNIEnv* pEnv)
+{
+ Thread* self;
+
+ /* main thread is always first in list */
+ self = gDvm.threadList;
+
+ /* must set this before allowing JNI-based method registration */
+ self->status = THREAD_NATIVE;
+
+ if (jniRegisterSystemMethods(pEnv) < 0) {
+ LOGE("jniRegisterSystemMethods failed");
+ return false;
+ }
+
+ /* back to run mode */
+ self->status = THREAD_RUNNING;
+
+ return true;
+}
+
+
+/*
+ * Do zygote-mode-only initialization.
+ */
+static bool initZygote(void)
+{
+ /* zygote goes into its own process group */
+ setpgid(0,0);
+
+ return true;
+}
+
+/*
+ * Do non-zygote-mode initialization. This is done during VM init for
+ * standard startup, or after a "zygote fork" when creating a new process.
+ */
+bool dvmInitAfterZygote(void)
+{
+ u8 startHeap, startQuit, startJdwp;
+ u8 endHeap, endQuit, endJdwp;
+
+ startHeap = dvmGetRelativeTimeUsec();
+
+ /*
+ * Post-zygote heap initialization, including starting
+ * the HeapWorker thread.
+ */
+ if (!dvmGcStartupAfterZygote())
+ return false;
+
+ endHeap = dvmGetRelativeTimeUsec();
+ startQuit = dvmGetRelativeTimeUsec();
+
+ /* start signal catcher thread that dumps stacks on SIGQUIT */
+ if (!gDvm.reduceSignals && !gDvm.noQuitHandler) {
+ if (!dvmSignalCatcherStartup())
+ return false;
+ }
+
+ /* start stdout/stderr copier, if requested */
+ if (gDvm.logStdio) {
+ if (!dvmStdioConverterStartup())
+ return false;
+ }
+
+ endQuit = dvmGetRelativeTimeUsec();
+ startJdwp = dvmGetRelativeTimeUsec();
+
+ /*
+ * Start JDWP thread. If the command-line debugger flags specified
+ * "suspend=y", this will pause the VM. We probably want this to
+ * come last.
+ */
+ if (!initJdwp()) {
+ LOGD("JDWP init failed; continuing anyway\n");
+ }
+
+ endJdwp = dvmGetRelativeTimeUsec();
+
+ LOGV("thread-start heap=%d quit=%d jdwp=%d total=%d usec\n",
+ (int)(endHeap-startHeap), (int)(endQuit-startQuit),
+ (int)(endJdwp-startJdwp), (int)(endJdwp-startHeap));
+
+#ifdef WITH_JIT
+ if (gDvm.executionMode == kExecutionModeJit) {
+ if (!dvmCompilerStartup())
+ return false;
+ }
+#endif
+
+ return true;
+}
+
+/*
+ * Prepare for a connection to a JDWP-compliant debugger.
+ *
+ * Note this needs to happen fairly late in the startup process, because
+ * we need to have all of the java.* native methods registered (which in
+ * turn requires JNI to be fully prepped).
+ *
+ * There are several ways to initialize:
+ * server=n
+ * We immediately try to connect to host:port. Bail on failure. On
+ * success, send VM_START (suspending the VM if "suspend=y").
+ * server=y suspend=n
+ * Passively listen for a debugger to connect. Return immediately.
+ * server=y suspend=y
+ * Wait until debugger connects. Send VM_START ASAP, suspending the
+ * VM after the message is sent.
+ *
+ * This gets more complicated with a nonzero value for "timeout".
+ */
+static bool initJdwp(void)
+{
+ assert(!gDvm.zygote);
+
+ /*
+ * Init JDWP if the debugger is enabled. This may connect out to a
+ * debugger, passively listen for a debugger, or block waiting for a
+ * debugger.
+ */
+ if (gDvm.jdwpAllowed && gDvm.jdwpConfigured) {
+ JdwpStartupParams params;
+
+ if (gDvm.jdwpHost != NULL) {
+ if (strlen(gDvm.jdwpHost) >= sizeof(params.host)-1) {
+ LOGE("ERROR: hostname too long: '%s'\n", gDvm.jdwpHost);
+ return false;
+ }
+ strcpy(params.host, gDvm.jdwpHost);
+ } else {
+ params.host[0] = '\0';
+ }
+ params.transport = gDvm.jdwpTransport;
+ params.server = gDvm.jdwpServer;
+ params.suspend = gDvm.jdwpSuspend;
+ params.port = gDvm.jdwpPort;
+
+ gDvm.jdwpState = dvmJdwpStartup(¶ms);
+ if (gDvm.jdwpState == NULL) {
+ LOGW("WARNING: debugger thread failed to initialize\n");
+ /* TODO: ignore? fail? need to mimic "expected" behavior */
+ }
+ }
+
+ /*
+ * If a debugger has already attached, send the "welcome" message. This
+ * may cause us to suspend all threads.
+ */
+ if (dvmJdwpIsActive(gDvm.jdwpState)) {
+ //dvmChangeStatus(NULL, THREAD_RUNNING);
+ if (!dvmJdwpPostVMStart(gDvm.jdwpState, gDvm.jdwpSuspend)) {
+ LOGW("WARNING: failed to post 'start' message to debugger\n");
+ /* keep going */
+ }
+ //dvmChangeStatus(NULL, THREAD_NATIVE);
+ }
+
+ return true;
+}
+
+/*
+ * An alternative to JNI_CreateJavaVM/dvmStartup that does the first bit
+ * of initialization and then returns with "initializing" still set. (Used
+ * by DexOpt command-line utility.)
+ *
+ * Attempting to use JNI or internal natives will fail. It's best
+ * if no bytecode gets executed, which means no <clinit>, which means
+ * no exception-throwing. (In practice we need to initialize Class and
+ * Object, and probably some exception classes.)
+ *
+ * Returns 0 on success.
+ */
+int dvmPrepForDexOpt(const char* bootClassPath, DexOptimizerMode dexOptMode,
+ DexClassVerifyMode verifyMode, int dexoptFlags)
+{
+ gDvm.initializing = true;
+ gDvm.optimizing = true;
+
+ /* configure signal handling */
+ blockSignals();
+
+ /* set some defaults */
+ setCommandLineDefaults();
+ free(gDvm.bootClassPathStr);
+ gDvm.bootClassPathStr = strdup(bootClassPath);
+
+ /* set opt/verify modes */
+ gDvm.dexOptMode = dexOptMode;
+ gDvm.classVerifyMode = verifyMode;
+ gDvm.generateRegisterMaps = (dexoptFlags & DEXOPT_GEN_REGISTER_MAPS) != 0;
+ if (dexoptFlags & DEXOPT_SMP) {
+ assert((dexoptFlags & DEXOPT_UNIPROCESSOR) == 0);
+ gDvm.dexOptForSmp = true;
+ } else if (dexoptFlags & DEXOPT_UNIPROCESSOR) {
+ gDvm.dexOptForSmp = false;
+ } else {
+ gDvm.dexOptForSmp = (ANDROID_SMP != 0);
+ }
+
+ /*
+ * Initialize the heap, some basic thread control mutexes, and
+ * get the bootclasspath prepped.
+ *
+ * We can't load any classes yet because we may not yet have a source
+ * for things like java.lang.Object and java.lang.Class.
+ */
+ if (!dvmGcStartup())
+ goto fail;
+ if (!dvmThreadStartup())
+ goto fail;
+ if (!dvmInlineNativeStartup())
+ goto fail;
+ if (!dvmRegisterMapStartup())
+ goto fail;
+ if (!dvmInstanceofStartup())
+ goto fail;
+ if (!dvmClassStartup())
+ goto fail;
+
+ /*
+ * We leave gDvm.initializing set to "true" so that, if we're not
+ * able to process the "core" classes, we don't go into a death-spin
+ * trying to throw a "class not found" exception.
+ */
+
+ return 0;
+
+fail:
+ dvmShutdown();
+ return 1;
+}
+
+
+/*
+ * All threads have stopped. Finish the shutdown procedure.
+ *
+ * We can also be called if startup fails partway through, so be prepared
+ * to deal with partially initialized data.
+ *
+ * Free any storage allocated in gGlobals.
+ *
+ * We can't dlclose() shared libs we've loaded, because it's possible a
+ * thread not associated with the VM is running code in one.
+ *
+ * This is called from the JNI DestroyJavaVM function, which can be
+ * called from any thread. (In practice, this will usually run in the
+ * same thread that started the VM, a/k/a the main thread, but we don't
+ * want to assume that.)
+ */
+void dvmShutdown(void)
+{
+ LOGV("VM shutting down\n");
+
+ if (CALC_CACHE_STATS)
+ dvmDumpAtomicCacheStats(gDvm.instanceofCache);
+
+ /*
+ * Stop our internal threads.
+ */
+ dvmGcThreadShutdown();
+
+ if (gDvm.jdwpState != NULL)
+ dvmJdwpShutdown(gDvm.jdwpState);
+ free(gDvm.jdwpHost);
+ gDvm.jdwpHost = NULL;
+ free(gDvm.jniTrace);
+ gDvm.jniTrace = NULL;
+ free(gDvm.stackTraceFile);
+ gDvm.stackTraceFile = NULL;
+
+ /* tell signal catcher to shut down if it was started */
+ dvmSignalCatcherShutdown();
+
+ /* shut down stdout/stderr conversion */
+ dvmStdioConverterShutdown();
+
+#ifdef WITH_JIT
+ if (gDvm.executionMode == kExecutionModeJit) {
+ /* shut down the compiler thread */
+ dvmCompilerShutdown();
+ }
+#endif
+
+ /*
+ * Kill any daemon threads that still exist. Actively-running threads
+ * are likely to crash the process if they continue to execute while
+ * the VM shuts down.
+ */
+ dvmSlayDaemons();
+
+ if (gDvm.verboseShutdown)
+ LOGD("VM cleaning up\n");
+
+ dvmDebuggerShutdown();
+ dvmProfilingShutdown();
+ dvmJniShutdown();
+ dvmStringInternShutdown();
+ dvmThreadShutdown();
+ dvmClassShutdown();
+ dvmRegisterMapShutdown();
+ dvmInstanceofShutdown();
+ dvmInlineNativeShutdown();
+ dvmGcShutdown();
+ dvmAllocTrackerShutdown();
+ dvmPropertiesShutdown();
+
+ /* these must happen AFTER dvmClassShutdown has walked through class data */
+ dvmNativeShutdown();
+ dvmInternalNativeShutdown();
+
+ dvmFreeInlineSubsTable();
+
+ free(gDvm.bootClassPathStr);
+ free(gDvm.classPathStr);
+
+ freeAssertionCtrl();
+
+ /*
+ * We want valgrind to report anything we forget to free as "definitely
+ * lost". If there's a pointer in the global chunk, it would be reported
+ * as "still reachable". Erasing the memory fixes this.
+ *
+ * This must be erased to zero if we want to restart the VM within this
+ * process.
+ */
+ memset(&gDvm, 0xcd, sizeof(gDvm));
+}
+
+
+/*
+ * fprintf() wrapper that calls through the JNI-specified vfprintf hook if
+ * one was specified.
+ */
+int dvmFprintf(FILE* fp, const char* format, ...)
+{
+ va_list args;
+ int result;
+
+ va_start(args, format);
+ if (gDvm.vfprintfHook != NULL)
+ result = (*gDvm.vfprintfHook)(fp, format, args);
+ else
+ result = vfprintf(fp, format, args);
+ va_end(args);
+
+ return result;
+}
+
+#ifdef __GLIBC__
+#include <execinfo.h>
+/*
+ * glibc-only stack dump function. Requires link with "--export-dynamic".
+ *
+ * TODO: move this into libs/cutils and make it work for all platforms.
+ */
+void dvmPrintNativeBackTrace(void)
+{
+ size_t MAX_STACK_FRAMES = 64;
+ void* stackFrames[MAX_STACK_FRAMES];
+ size_t frameCount = backtrace(stackFrames, MAX_STACK_FRAMES);
+
+ /*
+ * TODO: in practice, we may find that we should use backtrace_symbols_fd
+ * to avoid allocation, rather than use our own custom formatting.
+ */
+ char** strings = backtrace_symbols(stackFrames, frameCount);
+ if (strings == NULL) {
+ LOGE("backtrace_symbols failed: %s", strerror(errno));
+ return;
+ }
+
+ size_t i;
+ for (i = 0; i < frameCount; ++i) {
+ LOGW("#%-2d %s", i, strings[i]);
+ }
+ free(strings);
+}
+#else
+void dvmPrintNativeBackTrace(void) {
+ /* Hopefully, you're on an Android device and debuggerd will do this. */
+}
+#endif
+
+/*
+ * Abort the VM. We get here on fatal errors. Try very hard not to use
+ * this; whenever possible, return an error to somebody responsible.
+ */
+void dvmAbort(void)
+{
+ LOGE("VM aborting\n");
+
+ fflush(NULL); // flush all open file buffers
+
+ /* JNI-supplied abort hook gets right of first refusal */
+ if (gDvm.abortHook != NULL)
+ (*gDvm.abortHook)();
+
+ /*
+ * On the device, debuggerd will give us a stack trace.
+ * On the host, we have to help ourselves.
+ */
+ dvmPrintNativeBackTrace();
+
+ /*
+ * If we call abort(), all threads in the process receives a SIBABRT.
+ * debuggerd dumps the stack trace of the main thread, whether or not
+ * that was the thread that failed.
+ *
+ * By stuffing a value into a bogus address, we cause a segmentation
+ * fault in the current thread, and get a useful log from debuggerd.
+ * We can also trivially tell the difference between a VM crash and
+ * a deliberate abort by looking at the fault address.
+ */
+ *((char*)0xdeadd00d) = 38;
+ abort();
+
+ /* notreached */
+}