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-rw-r--r--lib/libthread_db/libc_r_db.c348
1 files changed, 348 insertions, 0 deletions
diff --git a/lib/libthread_db/libc_r_db.c b/lib/libthread_db/libc_r_db.c
new file mode 100644
index 0000000..10f7df1
--- /dev/null
+++ b/lib/libthread_db/libc_r_db.c
@@ -0,0 +1,348 @@
+/*
+ * Copyright (c) 2004 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <machine/setjmp.h>
+#include <proc_service.h>
+#include <stdlib.h>
+#include <string.h>
+#include <thread_db.h>
+
+#include "thread_db_int.h"
+
+void libc_r_md_getfpregs(jmp_buf jb, prfpregset_t *);
+void libc_r_md_getgregs(jmp_buf jb, prgregset_t);
+
+struct td_thragent {
+ TD_THRAGENT_FIELDS;
+ struct ps_prochandle *ta_ph;
+ psaddr_t ta_thread_initial;
+ psaddr_t ta_thread_list;
+ psaddr_t ta_thread_run;
+ int ta_ofs_ctx;
+ int ta_ofs_next;
+ int ta_ofs_uniqueid;
+};
+
+static td_err_e
+libc_r_db_init()
+{
+ return (TD_OK);
+}
+
+static td_err_e
+libc_r_db_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *ev)
+{
+ return (0);
+}
+
+static td_err_e
+libc_r_db_ta_delete(td_thragent_t *ta)
+{
+ free(ta);
+ return (TD_OK);
+}
+
+static td_err_e
+libc_r_db_ta_event_addr(const td_thragent_t *ta, td_thr_events_e ev,
+ td_notify_t *n)
+{
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_ta_event_getmsg(const td_thragent_t *ta, td_event_msg_t *msg)
+{
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_ta_map_id2thr(const td_thragent_t *ta, thread_t tid,
+ td_thrhandle_t *th)
+{
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwpid,
+ td_thrhandle_t *th)
+{
+ psaddr_t addr;
+ ps_err_e err;
+
+ th->th_ta = ta;
+ err = ps_pread(ta->ta_ph, ta->ta_thread_initial, &addr, sizeof(addr));
+ if (err != PS_OK)
+ return (TD_ERR);
+ if (addr == NULL)
+ return (TD_NOLWP);
+ err = ps_pread(ta->ta_ph, ta->ta_thread_run, &th->th_thread,
+ sizeof(psaddr_t));
+ return ((err == PS_OK) ? TD_OK : TD_ERR);
+}
+
+static td_err_e
+libc_r_db_ta_new(struct ps_prochandle *ph, td_thragent_t **ta_p)
+{
+ td_thragent_t *ta;
+ psaddr_t addr;
+ ps_err_e err;
+
+ ta = malloc(sizeof(td_thragent_t));
+ if (ta == NULL)
+ return (TD_MALLOC);
+
+ ta->ta_ph = ph;
+
+ err = ps_pglobal_lookup(ph, NULL, "_thread_initial",
+ &ta->ta_thread_initial);
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pglobal_lookup(ph, NULL, "_thread_list", &ta->ta_thread_list);
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pglobal_lookup(ph, NULL, "_thread_run", &ta->ta_thread_run);
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pglobal_lookup(ph, NULL, "_thread_ctx_offset", &addr);
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pread(ph, addr, &ta->ta_ofs_ctx, sizeof(int));
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pglobal_lookup(ph, NULL, "_thread_next_offset", &addr);
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pread(ph, addr, &ta->ta_ofs_next, sizeof(int));
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pglobal_lookup(ph, NULL, "_thread_uniqueid_offset", &addr);
+ if (err != PS_OK)
+ goto fail;
+ err = ps_pread(ph, addr, &ta->ta_ofs_uniqueid, sizeof(int));
+ if (err != PS_OK)
+ goto fail;
+
+ *ta_p = ta;
+ return (TD_OK);
+
+ fail:
+ free(ta);
+ *ta_p = NULL;
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_ta_set_event(const td_thragent_t *ta, td_thr_events_t *ev)
+{
+ return (0);
+}
+
+static td_err_e
+libc_r_db_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *cb, void *data,
+ td_thr_state_e state, int pri, sigset_t *mask, unsigned int flags)
+{
+ td_thrhandle_t th;
+ psaddr_t addr;
+ ps_err_e err;
+
+ th.th_ta = ta;
+
+ err = ps_pread(ta->ta_ph, ta->ta_thread_list, &th.th_thread,
+ sizeof(th.th_thread));
+ if (err != PS_OK)
+ return (TD_ERR);
+ while (th.th_thread != NULL) {
+ if (cb(&th, data) != 0)
+ return (TD_OK);
+ addr = (psaddr_t)((uintptr_t)th.th_thread + ta->ta_ofs_next);
+ err = ps_pread(ta->ta_ph, addr, &th.th_thread,
+ sizeof(th.th_thread));
+ if (err != PS_OK)
+ return (TD_ERR);
+ }
+ return (TD_OK);
+}
+
+static td_err_e
+libc_r_db_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *ev)
+{
+ return (0);
+}
+
+static td_err_e
+libc_r_db_thr_event_enable(const td_thrhandle_t *th, int oo)
+{
+ return (0);
+}
+
+static td_err_e
+libc_r_db_thr_event_getmsg(const td_thrhandle_t *th, td_event_msg_t *msg)
+{
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *ti)
+{
+ const td_thragent_t *ta;
+ psaddr_t addr, current;
+ ps_err_e err;
+
+ ta = th->th_ta;
+ ti->ti_ta_p = ta;
+ err = ps_pread(ta->ta_ph, ta->ta_thread_run, &current,
+ sizeof(psaddr_t));
+ if (err != PS_OK)
+ return (TD_ERR);
+ ti->ti_lid = (th->th_thread == current) ? -1 : 0;
+ addr = (psaddr_t)((uintptr_t)th->th_thread + ta->ta_ofs_uniqueid);
+ err = ps_pread(ta->ta_ph, addr, &ti->ti_tid, sizeof(thread_t));
+ /* libc_r numbers its threads starting with 0. Not smart. */
+ ti->ti_tid++;
+ return ((err == PS_OK) ? TD_OK : TD_ERR);
+}
+
+#ifdef __i386__
+static td_err_e
+libc_r_db_thr_getxmmregs(const td_thrhandle_t *th, char *fxsave)
+{
+ return (TD_NOFPREGS);
+}
+#endif
+
+static td_err_e
+libc_r_db_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *r)
+{
+ jmp_buf jb;
+ const td_thragent_t *ta;
+ psaddr_t addr;
+ ps_err_e err;
+
+ ta = th->th_ta;
+ err = ps_lgetfpregs(ta->ta_ph, -1, r);
+ if (err != PS_OK)
+ return (TD_ERR);
+ err = ps_pread(ta->ta_ph, ta->ta_thread_run, &addr, sizeof(psaddr_t));
+ if (err != PS_OK)
+ return (TD_ERR);
+ if (th->th_thread == addr)
+ return (TD_OK);
+ addr = (psaddr_t)((uintptr_t)th->th_thread + ta->ta_ofs_ctx);
+ err = ps_pread(ta->ta_ph, addr, jb, sizeof(jb));
+ if (err != PS_OK)
+ return (TD_ERR);
+ libc_r_md_getfpregs(jb, r);
+ return (TD_OK);
+}
+
+static td_err_e
+libc_r_db_thr_getgregs(const td_thrhandle_t *th, prgregset_t r)
+{
+ jmp_buf jb;
+ const td_thragent_t *ta;
+ psaddr_t addr;
+ ps_err_e err;
+
+ ta = th->th_ta;
+ err = ps_lgetregs(ta->ta_ph, -1, r);
+ if (err != PS_OK)
+ return (TD_ERR);
+ err = ps_pread(ta->ta_ph, ta->ta_thread_run, &addr, sizeof(psaddr_t));
+ if (err != PS_OK)
+ return (TD_ERR);
+ if (th->th_thread == addr)
+ return (TD_OK);
+ addr = (psaddr_t)((uintptr_t)th->th_thread + ta->ta_ofs_ctx);
+ err = ps_pread(ta->ta_ph, addr, jb, sizeof(jb));
+ if (err != PS_OK)
+ return (TD_ERR);
+ libc_r_md_getgregs(jb, r);
+ return (TD_OK);
+}
+
+static td_err_e
+libc_r_db_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *ev)
+{
+ return (0);
+}
+
+#ifdef __i386__
+static td_err_e
+libc_r_db_thr_setxmmregs(const td_thrhandle_t *th, const char *fxsave)
+{
+ return (TD_NOFPREGS);
+}
+#endif
+
+static td_err_e
+libc_r_db_thr_setfpregs(const td_thrhandle_t *th, const prfpregset_t *r)
+{
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_thr_setgregs(const td_thrhandle_t *th, const prgregset_t r)
+{
+ return (TD_ERR);
+}
+
+static td_err_e
+libc_r_db_thr_validate(const td_thrhandle_t *th)
+{
+ return (TD_ERR);
+}
+
+struct ta_ops libc_r_db_ops = {
+ .to_init = libc_r_db_init,
+
+ .to_ta_clear_event = libc_r_db_ta_clear_event,
+ .to_ta_delete = libc_r_db_ta_delete,
+ .to_ta_event_addr = libc_r_db_ta_event_addr,
+ .to_ta_event_getmsg = libc_r_db_ta_event_getmsg,
+ .to_ta_map_id2thr = libc_r_db_ta_map_id2thr,
+ .to_ta_map_lwp2thr = libc_r_db_ta_map_lwp2thr,
+ .to_ta_new = libc_r_db_ta_new,
+ .to_ta_set_event = libc_r_db_ta_set_event,
+ .to_ta_thr_iter = libc_r_db_ta_thr_iter,
+
+ .to_thr_clear_event = libc_r_db_thr_clear_event,
+ .to_thr_event_enable = libc_r_db_thr_event_enable,
+ .to_thr_event_getmsg = libc_r_db_thr_event_getmsg,
+ .to_thr_get_info = libc_r_db_thr_get_info,
+ .to_thr_getfpregs = libc_r_db_thr_getfpregs,
+ .to_thr_getgregs = libc_r_db_thr_getgregs,
+ .to_thr_set_event = libc_r_db_thr_set_event,
+ .to_thr_setfpregs = libc_r_db_thr_setfpregs,
+ .to_thr_setgregs = libc_r_db_thr_setgregs,
+ .to_thr_validate = libc_r_db_thr_validate,
+#ifdef __i386__
+ .to_thr_getxmmregs = libc_r_db_thr_getxmmregs,
+ .to_thr_setxmmregs = libc_r_db_thr_setxmmregs,
+#endif
+};
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