rd_err_e
rd_reset(struct rd_agent *rap)
{
rd_err_e err;
RDAGLOCK(rap);
rap->rd_flags = 0;
#ifdef _LP64
/*
* Determine if client is 32-bit or 64-bit.
*/
if (ps_pdmodel(rap->rd_psp, &rap->rd_dmodel) != PS_OK) {
LOG(ps_plog(MSG_ORIG(MSG_DB_DMLOOKFAIL)));
RDAGUNLOCK(rap);
return (RD_DBERR);
}
if (rap->rd_dmodel == PR_MODEL_LP64)
err = _rd_reset64(rap);
else
#endif
err = _rd_reset32(rap);
RDAGUNLOCK(rap);
return (err);
}
/*
* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
* Method: getRemoteProcessAddressSize0
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0
(JNIEnv *env, jobject this_obj) {
jlong ps_prochandle_ptr;
ps_prochandle_ptr = env->GetLongField(this_obj, ps_prochandle_ptr_ID);
int data_model = PR_MODEL_ILP32;
ps_pdmodel((struct ps_prochandle*) ps_prochandle_ptr, &data_model);
return (jint) data_model == PR_MODEL_ILP32? 32 : 64;
}
static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) {
jboolean isCopy;
int gcode;
const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy);
CHECK_EXCEPTION;
// some older versions of libproc.so crash when trying to attach 32 bit
// debugger to 64 bit core file. check and throw error.
#ifndef _LP64
atoi(cmdLine_cstr);
if (errno) {
// core file
int core_fd;
if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) {
Elf32_Ehdr e32;
if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) &&
memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 &&
e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) {
close(core_fd);
THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger");
}
close(core_fd);
}
// all other conditions are handled by libproc.so.
}
#endif
// connect to process/core
ps_prochandle_t* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode, NULL);
env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr);
if (! ph) {
if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) {
char errMsg[ERR_MSG_SIZE];
sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]);
THROW_NEW_DEBUGGER_EXCEPTION(errMsg);
} else {
if (_libsaproc_debug && gcode == G_STRANGE) {
perror("libsaproc DEBUG: ");
}
if (isProcess) {
THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!");
} else {
THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!");
}
}
}
// even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't
// support such cross-bit-debugging. check for that combination and throw error.
#ifdef _LP64
int data_model;
if (ps_pdmodel(ph, &data_model) != PS_OK) {
Prelease(ph, PRELEASE_CLEAR);
THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)");
}
if (data_model == PR_MODEL_ILP32) {
Prelease(ph, PRELEASE_CLEAR);
THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger");
}
#endif
env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph);
Debugger dbg;
dbg.env = env;
dbg.this_obj = this_obj;
jthrowable exception = 0;
if (! isProcess) {
/*
* With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ.
* These pages are mapped from the file "classes.jsa". MAP_SHARED pages are not dumped
* in Solaris core.To read shared heap pages, we have to read classes.jsa file.
*/
Pobject_iter(ph, init_classsharing_workaround, &dbg);
exception = env->ExceptionOccurred();
if (exception) {
env->ExceptionClear();
detach_internal(env, this_obj);
env->Throw(exception);
return;
}
}
/*
* Iterate over the process mappings looking
* for libthread and then dlopen the appropriate
* libthread_db and get function pointers.
*/
Pobject_iter(ph, init_libthread_db_ptrs, &dbg);
exception = env->ExceptionOccurred();
if (exception) {
env->ExceptionClear();
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
env->Throw(exception);
}
return;
}
// init libthread_db and create thread_db agent
p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID);
if (p_td_init == 0) {
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
}
HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!");
}
if (p_td_init() != TD_OK) {
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
}
HANDLE_THREADDB_FAILURE("Can't initialize thread_db!");
}
p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID);
td_thragent_t *p_td_thragent_t = 0;
if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) {
if (!sa_ignore_threaddb) {
detach_internal(env, this_obj);
}
HANDLE_THREADDB_FAILURE("Can't create thread_db agent!");
}
env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t);
}
