1 /* $NetBSD: csan.h,v 1.2 2019/11/06 06:57:22 maxv Exp $ */
4 * Copyright (c) 2019 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
32 #include <machine/cpufunc.h>
33 #include <machine/stack.h>
34 #include <machine/vmparam.h>
37 kcsan_md_unsupported(vm_offset_t addr)
43 kcsan_md_is_avail(void)
49 kcsan_md_disable_intrs(uint64_t *state)
52 *state = intr_disable();
56 kcsan_md_enable_intrs(uint64_t *state)
63 kcsan_md_delay(uint64_t us)
76 struct unwind_state frame;
80 __asm __volatile("mov %0, sp" : "=&r" (sp));
83 frame.fp = (uintptr_t)__builtin_frame_address(0);
84 frame.pc = (uintptr_t)kcsan_md_unwind;
88 if (!unwind_frame(curthread, &frame))
90 if (!INKERNEL((vm_offset_t)frame.pc))
94 sym = db_search_symbol((vm_offset_t)frame.pc, DB_STGY_PROC,
96 db_symbol_values(sym, &symname, NULL);
97 printf("#%d %p in %s+%#lx\n", nsym, (void *)frame.pc,
100 printf("#%d %p\n", nsym, (void *)frame.pc);