/*
* Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
* Method: writeBytesToProcess0
* Signature: (JJ[B)V
* Description: write bytes into debugger process
*/
JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0
(JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) {
jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
jboolean isCopy;
jbyte* ptr = env->GetByteArrayElements(data, &isCopy);
CHECK_EXCEPTION;
if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) {
env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!");
}
env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
}
static td_err_e
pt_ta_delete(td_thragent_t *ta)
{
int dbg;
TDBG_FUNC();
dbg = 0;
/*
* Error returns from this write are not really a problem;
* the process doesn't exist any more.
*/
ps_pwrite(ta->ph, ta->libthr_debug_addr, &dbg, sizeof(int));
free(ta);
return (TD_OK);
}
static td_err_e
pt_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
{
#define LOOKUP_SYM(proc, sym, addr) \
ret = ps_pglobal_lookup(proc, NULL, sym, addr); \
if (ret != 0) { \
TDBG("can not find symbol: %s\n", sym); \
ret = TD_NOLIBTHREAD; \
goto error; \
}
#define LOOKUP_VAL(proc, sym, val) \
ret = ps_pglobal_lookup(proc, NULL, sym, &vaddr);\
if (ret != 0) { \
TDBG("can not find symbol: %s\n", sym); \
ret = TD_NOLIBTHREAD; \
goto error; \
} \
ret = ps_pread(proc, vaddr, val, sizeof(int)); \
if (ret != 0) { \
TDBG("can not read value of %s\n", sym);\
ret = TD_NOLIBTHREAD; \
goto error; \
}
td_thragent_t *ta;
psaddr_t vaddr;
int dbg;
int ret;
TDBG_FUNC();
ta = malloc(sizeof(td_thragent_t));
if (ta == NULL)
return (TD_MALLOC);
ta->ph = ph;
LOOKUP_SYM(ph, "_libthr_debug", &ta->libthr_debug_addr);
LOOKUP_SYM(ph, "_thread_list", &ta->thread_list_addr);
LOOKUP_SYM(ph, "_thread_active_threads",&ta->thread_active_threads_addr);
LOOKUP_SYM(ph, "_thread_keytable", &ta->thread_keytable_addr);
LOOKUP_SYM(ph, "_thread_last_event", &ta->thread_last_event_addr);
LOOKUP_SYM(ph, "_thread_event_mask", &ta->thread_event_mask_addr);
LOOKUP_SYM(ph, "_thread_bp_create", &ta->thread_bp_create_addr);
LOOKUP_SYM(ph, "_thread_bp_death", &ta->thread_bp_death_addr);
LOOKUP_VAL(ph, "_thread_off_dtv", &ta->thread_off_dtv);
LOOKUP_VAL(ph, "_thread_off_tlsindex", &ta->thread_off_tlsindex);
LOOKUP_VAL(ph, "_thread_off_attr_flags", &ta->thread_off_attr_flags);
LOOKUP_VAL(ph, "_thread_size_key", &ta->thread_size_key);
LOOKUP_VAL(ph, "_thread_off_tcb", &ta->thread_off_tcb);
LOOKUP_VAL(ph, "_thread_off_tid", &ta->thread_off_tid);
LOOKUP_VAL(ph, "_thread_off_linkmap", &ta->thread_off_linkmap);
LOOKUP_VAL(ph, "_thread_off_next", &ta->thread_off_next);
LOOKUP_VAL(ph, "_thread_off_state", &ta->thread_off_state);
LOOKUP_VAL(ph, "_thread_max_keys", &ta->thread_max_keys);
LOOKUP_VAL(ph, "_thread_off_key_allocated", &ta->thread_off_key_allocated);
LOOKUP_VAL(ph, "_thread_off_key_destructor", &ta->thread_off_key_destructor);
LOOKUP_VAL(ph, "_thread_state_running", &ta->thread_state_running);
LOOKUP_VAL(ph, "_thread_state_zoombie", &ta->thread_state_zoombie);
LOOKUP_VAL(ph, "_thread_off_report_events", &ta->thread_off_report_events);
LOOKUP_VAL(ph, "_thread_off_event_mask", &ta->thread_off_event_mask);
LOOKUP_VAL(ph, "_thread_off_event_buf", &ta->thread_off_event_buf);
dbg = getpid();
/*
* If this fails it probably means we're debugging a core file and
* can't write to it.
*/
ps_pwrite(ph, ta->libthr_debug_addr, &dbg, sizeof(int));
*pta = ta;
return (0);
error:
free(ta);
return (ret);
}