Add rudimentary support and stubs for libthr and libc_r on alpha, amd64,

i386, ia64 and sparc64. Add stubs for alpha, amd64, ia64 and sparc64 for
libpthread.

Restructure the source files to avoid unnecessary use of subdirectories
that also force us to use non-portable compilation flags to deal with
the uncommon compilation requirements (building archive libraries for
linkage into a shared library).

The libpthread support has been copied from the original local and
cleaned-up to make them WARNS=2 clean.
that also force us to use non-portable compilation flags to deal with
the uncommon compilation requirements (building archive libraries for
linkage into a shared library).

The libpthread support has been copied from the original local and
cleaned-up to make them WARNS=2 clean.

Tested on: amd64, i386, ia64

1 files changed, 236 insertions, 0 deletions

diff --git a/lib/libthread_db/thread_db.c b/lib/libthread_db/thread_db.c
new file mode 100644
index 0000000..e92d4ff
--- /dev/null
+++ b/lib/libthread_db/thread_db.c
@@ -0,0 +1,236 @@
+/*
+ * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
+ * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <proc_service.h>
+#include <stddef.h>
+#include <thread_db.h>
+#include <unistd.h>
+
+#include "thread_db_int.h"
+
+struct td_thragent 
+{
+	TD_THRAGENT_FIELDS;
+};
+
+static TAILQ_HEAD(, td_thragent) proclist = TAILQ_HEAD_INITIALIZER(proclist);
+
+extern struct ta_ops libc_r_db_ops;
+extern struct ta_ops libpthread_db_ops;
+extern struct ta_ops libthr_db_ops;
+
+static struct ta_ops *ops[] = {
+	&libpthread_db_ops,
+	&libthr_db_ops,
+	&libc_r_db_ops
+};
+
+td_err_e
+td_init(void)
+{
+	td_err_e ret, tmp;
+	size_t i;
+
+	ret = 0;
+	for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
+		if (ops[i]->to_init != NULL) {
+			tmp = ops[i]->to_init();
+			if (tmp != TD_OK)
+				ret = tmp;
+		}
+	}
+	return (ret);
+}
+
+td_err_e
+td_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *events)
+{
+	return (ta->ta_ops->to_ta_clear_event(ta, events));
+}
+
+td_err_e
+td_ta_delete(td_thragent_t *ta)
+{
+	TAILQ_REMOVE(&proclist, ta, ta_next);
+	return (ta->ta_ops->to_ta_delete(ta));
+}
+
+td_err_e
+td_ta_event_addr(const td_thragent_t *ta, td_event_e event, td_notify_t *ptr)
+{
+	return (ta->ta_ops->to_ta_event_addr(ta, event, ptr));
+}
+
+td_err_e
+td_ta_event_getmsg(const td_thragent_t *ta, td_event_msg_t *msg)
+{
+	return (ta->ta_ops->to_ta_event_getmsg(ta, msg));
+}
+
+td_err_e
+td_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
+{
+	return (ta->ta_ops->to_ta_map_id2thr(ta, id, th));
+}
+
+td_err_e
+td_ta_map_lwp2thr(const td_thragent_t *ta, lwpid_t lwpid, td_thrhandle_t *th)
+{
+	return (ta->ta_ops->to_ta_map_lwp2thr(ta, lwpid, th));
+}
+
+td_err_e
+td_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
+{
+	size_t i;
+
+	for (i = 0; i < sizeof(ops)/sizeof(ops[0]); ++i) {
+		if (ops[i]->to_ta_new(ph, pta) == TD_OK) {
+			TAILQ_INSERT_HEAD(&proclist, *pta, ta_next);
+			(*pta)->ta_ops = ops[i];
+			return (TD_OK);
+		}
+	}
+	return (TD_NOLIBTHREAD);
+}
+
+td_err_e
+td_ta_set_event(const td_thragent_t *ta, td_thr_events_t *events)
+{
+	return (ta->ta_ops->to_ta_set_event(ta, events));
+}
+
+td_err_e
+td_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *callback,
+    void *cbdata_p, td_thr_state_e state, int ti_pri, sigset_t *ti_sigmask_p,
+    unsigned int ti_user_flags)
+{
+	return (ta->ta_ops->to_ta_thr_iter(ta, callback, cbdata_p, state,
+		    ti_pri, ti_sigmask_p, ti_user_flags));
+}
+
+td_err_e
+td_ta_tsd_iter(const td_thragent_t *ta, td_key_iter_f *callback,
+    void *cbdata_p)
+{
+	return (ta->ta_ops->to_ta_tsd_iter(ta, callback, cbdata_p));
+}
+
+td_err_e
+td_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *events)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_clear_event(th, events));
+}
+
+td_err_e
+td_thr_dbresume(const td_thrhandle_t *th)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_dbresume(th));
+}
+
+td_err_e
+td_thr_dbsuspend(const td_thrhandle_t *th)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_dbsuspend(th));
+}
+
+td_err_e
+td_thr_event_enable(const td_thrhandle_t *th, int en)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_event_enable(th, en));
+}
+
+td_err_e
+td_thr_event_getmsg(const td_thrhandle_t *th, td_event_msg_t *msg)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_event_getmsg(th, msg));
+}
+
+td_err_e
+td_thr_get_info(const td_thrhandle_t *th, td_thrinfo_t *info)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_get_info(th, info));
+}
+
+td_err_e
+td_thr_getfpregs(const td_thrhandle_t *th, prfpregset_t *fpregset)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_getfpregs(th, fpregset));
+}
+
+td_err_e
+td_thr_getgregs(const td_thrhandle_t *th, prgregset_t gregs)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_getgregs(th, gregs));
+}
+
+td_err_e
+td_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *events)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_set_event(th, events));
+}
+
+td_err_e
+td_thr_setfpregs(const td_thrhandle_t *th, const prfpregset_t *fpregs)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_setfpregs(th, fpregs));
+}
+
+td_err_e
+td_thr_setgregs(const td_thrhandle_t *th, const prgregset_t gregs)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_setgregs(th, gregs));
+}
+
+td_err_e
+td_thr_validate(const td_thrhandle_t *th)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_validate(th));
+}
+
+/* FreeBSD specific extensions. */
+
+td_err_e
+td_thr_sstep(const td_thrhandle_t *th, int step)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_sstep(th, step));
+}