2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2005 Antoine Brodin
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include "opt_kstack_pages.h"
34 #include <sys/param.h>
36 #include <sys/stack.h>
37 #include <sys/systm.h>
39 #include <machine/pcb.h>
40 #include <machine/stack.h>
41 #include <machine/vmparam.h>
43 static void stack_capture(struct stack *st, struct frame *frame);
46 stack_capture(struct stack *st, struct frame *frame)
54 if (!INKERNEL((vm_offset_t)fp) ||
55 !ALIGNED_POINTER(fp, uint64_t))
58 if (!INKERNEL(callpc))
60 /* Don't bother traversing trap frames. */
61 if ((callpc > (uint64_t)tl_trap_begin &&
62 callpc < (uint64_t)tl_trap_end) ||
63 (callpc > (uint64_t)tl_text_begin &&
64 callpc < (uint64_t)tl_text_end))
66 if (stack_put(st, callpc) == -1)
68 if (v9next_frame(fp) <= fp ||
69 v9next_frame(fp) >= frame + KSTACK_PAGES * PAGE_SIZE)
71 fp = v9next_frame(fp);
76 stack_save_td(struct stack *st, struct thread *td)
79 if (TD_IS_SWAPPED(td))
80 panic("stack_save_td: swapped");
81 if (TD_IS_RUNNING(td))
82 panic("stack_save_td: running");
84 stack_capture(st, (struct frame *)(td->td_pcb->pcb_sp + SPOFF));
88 stack_save_td_running(struct stack *st, struct thread *td)
95 stack_save(struct stack *st)
98 stack_capture(st, (struct frame *)__builtin_frame_address(0));