1 files changed, 442 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..121855b
--- /dev/null
+++ b/lib/libthread_db/thread_db.c
@@ -0,0 +1,442 @@
+/*
+ * 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 <sys/cdefs.h>
+#include <sys/endian.h>
+#include <sys/errno.h>
+#include <sys/linker_set.h>
+
+#include "thread_db_int.h"
+
+struct td_thragent 
+{
+	TD_THRAGENT_FIELDS;
+};
+
+static TAILQ_HEAD(, td_thragent) proclist = TAILQ_HEAD_INITIALIZER(proclist);
+
+SET_DECLARE(__ta_ops, struct ta_ops);
+
+td_err_e
+td_init(void)
+{
+	td_err_e ret, tmp;
+	struct ta_ops *ops_p, **ops_pp;
+
+	ret = 0;
+	SET_FOREACH(ops_pp, __ta_ops) {
+		ops_p = *ops_pp;
+		if (ops_p->to_init != NULL) {
+			tmp = ops_p->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)
+{
+	struct ta_ops *ops_p, **ops_pp;
+
+	SET_FOREACH(ops_pp, __ta_ops) {
+		ops_p = *ops_pp;
+		if (ops_p->to_ta_new(ph, pta) == TD_OK) {
+			TAILQ_INSERT_HEAD(&proclist, *pta, ta_next);
+			(*pta)->ta_ops = ops_p;
+			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_old_get_info(const td_thrhandle_t *th, td_old_thrinfo_t *info)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_old_get_info(th, info));
+}
+__sym_compat(td_thr_get_info, td_thr_old_get_info, FBSD_1.0);
+
+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));
+}
+
+#ifdef __i386__
+td_err_e
+td_thr_getxmmregs(const td_thrhandle_t *th, char *fxsave)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_getxmmregs(th, fxsave));
+}
+#endif
+
+
+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));
+}
+
+#ifdef __i386__
+td_err_e
+td_thr_setxmmregs(const td_thrhandle_t *th, const char *fxsave)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_setxmmregs(th, fxsave));
+}
+#endif
+
+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));
+}
+
+td_err_e
+td_thr_tls_get_addr(const td_thrhandle_t *th, psaddr_t linkmap, size_t offset,
+    psaddr_t *address)
+{
+	const td_thragent_t *ta = th->th_ta;
+	return (ta->ta_ops->to_thr_tls_get_addr(th, linkmap, offset, address));
+}
+
+/* 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));
+}
+
+/*
+ * Support functions for reading from and writing to the target
+ * address space.
+ */
+
+static int
+thr_pread(struct ps_prochandle *ph, psaddr_t addr, uint64_t *val,
+    u_int size, u_int byteorder)
+{
+	uint8_t buf[sizeof(*val)];
+	ps_err_e err;
+
+	if (size > sizeof(buf))
+		return (EOVERFLOW);
+
+	err = ps_pread(ph, addr, buf, size);
+	if (err != PS_OK)
+		return (EFAULT);
+
+	switch (byteorder) {
+	case BIG_ENDIAN:
+		switch (size) {
+		case 1:
+			*val = buf[0];
+			break;
+		case 2:
+			*val = be16dec(buf);
+			break;
+		case 4:
+			*val = be32dec(buf);
+			break;
+		case 8:
+			*val = be64dec(buf);
+			break;
+		default:
+			return (EINVAL);
+		}
+		break;
+	case LITTLE_ENDIAN:
+		switch (size) {
+		case 1:
+			*val = buf[0];
+			break;
+		case 2:
+			*val = le16dec(buf);
+			break;
+		case 4:
+			*val = le32dec(buf);
+			break;
+		case 8:
+			*val = le64dec(buf);
+			break;
+		default:
+			return (EINVAL);
+		}
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	return (0);
+}
+
+int
+thr_pread_int(const struct td_thragent *ta, psaddr_t addr, uint32_t *val)
+{
+	uint64_t tmp;
+	int error;
+
+	error = thr_pread(ta->ph, addr, &tmp, sizeof(int), BYTE_ORDER);
+	if (!error)
+		*val = tmp;
+
+	return (error);
+}
+
+int
+thr_pread_long(const struct td_thragent *ta, psaddr_t addr, uint64_t *val)
+{
+
+	return (thr_pread(ta->ph, addr, val, sizeof(long), BYTE_ORDER));
+}
+
+int
+thr_pread_ptr(const struct td_thragent *ta, psaddr_t addr, psaddr_t *val)
+{
+	uint64_t tmp;
+	int error;
+
+	error = thr_pread(ta->ph, addr, &tmp, sizeof(void *), BYTE_ORDER);
+	if (!error)
+		*val = tmp;
+
+	return (error);
+}
+
+static int
+thr_pwrite(struct ps_prochandle *ph, psaddr_t addr, uint64_t val,
+    u_int size, u_int byteorder)
+{
+	uint8_t buf[sizeof(val)];
+	ps_err_e err;
+
+	if (size > sizeof(buf))
+		return (EOVERFLOW);
+
+	switch (byteorder) {
+	case BIG_ENDIAN:
+		switch (size) {
+		case 1:
+			buf[0] = (uint8_t)val;
+			break;
+		case 2:
+			be16enc(buf, (uint16_t)val);
+			break;
+		case 4:
+			be32enc(buf, (uint32_t)val);
+			break;
+		case 8:
+			be64enc(buf, (uint64_t)val);
+			break;
+		default:
+			return (EINVAL);
+		}
+		break;
+	case LITTLE_ENDIAN:
+		switch (size) {
+		case 1:
+			buf[0] = (uint8_t)val;
+			break;
+		case 2:
+			le16enc(buf, (uint16_t)val);
+			break;
+		case 4:
+			le32enc(buf, (uint32_t)val);
+			break;
+		case 8:
+			le64enc(buf, (uint64_t)val);
+			break;
+		default:
+			return (EINVAL);
+		}
+		break;
+	default:
+		return (EINVAL);
+	}
+
+	err = ps_pwrite(ph, addr, buf, size);
+	return ((err != PS_OK) ? EFAULT : 0);
+}
+
+int
+thr_pwrite_int(const struct td_thragent *ta, psaddr_t addr, uint32_t val)
+{
+
+	return (thr_pwrite(ta->ph, addr, val, sizeof(int), BYTE_ORDER));
+}
+
+int
+thr_pwrite_long(const struct td_thragent *ta, psaddr_t addr, uint64_t val)
+{
+
+	return (thr_pwrite(ta->ph, addr, val, sizeof(long), BYTE_ORDER));
+}
+
+int
+thr_pwrite_ptr(const struct td_thragent *ta, psaddr_t addr, psaddr_t val)
+{
+
+	return (thr_pwrite(ta->ph, addr, val, sizeof(void *), BYTE_ORDER));
+}
+