stack revision 1.2.4.2
1 1.2.4.2 minoura # $NetBSD: stack,v 1.2.4.2 2000/06/22 17:00:21 minoura Exp $ 2 1.2.4.2 minoura 3 1.2.4.2 minoura # Copyright (c) 2000 The NetBSD Foundation, Inc. 4 1.2.4.2 minoura # All rights reserved. 5 1.2.4.2 minoura # 6 1.2.4.2 minoura # This code is derived from software contributed to The NetBSD Foundation 7 1.2.4.2 minoura # by John A. Hawkinson. 8 1.2.4.2 minoura # 9 1.2.4.2 minoura # Redistribution and use in source and binary forms, with or without 10 1.2.4.2 minoura # modification, are permitted provided that the following conditions 11 1.2.4.2 minoura # are met: 12 1.2.4.2 minoura # 1. Redistributions of source code must retain the above copyright 13 1.2.4.2 minoura # notice, this list of conditions and the following disclaimer. 14 1.2.4.2 minoura # 2. Redistributions in binary form must reproduce the above copyright 15 1.2.4.2 minoura # notice, this list of conditions and the following disclaimer in the 16 1.2.4.2 minoura # documentation and/or other materials provided with the distribution. 17 1.2.4.2 minoura # 3. All advertising materials mentioning features or use of this software 18 1.2.4.2 minoura # must display the following acknowledgement: 19 1.2.4.2 minoura # This product includes software developed by the NetBSD 20 1.2.4.2 minoura # Foundation, Inc. and its contributors. 21 1.2.4.2 minoura # 4. Neither the name of The NetBSD Foundation nor the names of its 22 1.2.4.2 minoura # contributors may be used to endorse or promote products derived 23 1.2.4.2 minoura # from this software without specific prior written permission. 24 1.2.4.2 minoura # 25 1.2.4.2 minoura # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 1.2.4.2 minoura # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.4.2 minoura # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.4.2 minoura # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 1.2.4.2 minoura # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.4.2 minoura # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.4.2 minoura # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.4.2 minoura # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.4.2 minoura # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.4.2 minoura # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.4.2 minoura # POSSIBILITY OF SUCH DAMAGE. 36 1.2.4.2 minoura 37 1.2.4.2 minoura 38 1.2.4.2 minoura # Follow an i386 kernel stack trace. 39 1.2.4.2 minoura # This code makes presumptions about the way frames look, consistent 40 1.2.4.2 minoura # with arch/i386/i386/db_trace.c. It also steals algorithms from there. 41 1.2.4.2 minoura 42 1.2.4.2 minoura # Output looks like: 43 1.2.4.2 minoura # 44 1.2.4.2 minoura # 0xc03049cb <cpu_reboot+99>(0x100,0x0,0xc04fd728,0x0,0x6) 45 1.2.4.2 minoura # at 0xc01bc97d <panic+197> (frame at 0xc5633bd0) 46 1.2.4.2 minoura # 47 1.2.4.2 minoura # In this case, the initial hex number and offset should be disregarded, 48 1.2.4.2 minoura # and it should be interprted as if it were: 49 1.2.4.2 minoura # 50 1.2.4.2 minoura # cpu_reboot(0x100,0x0,0xc04fd728,0x0,0x6) 51 1.2.4.2 minoura # at 0xc01bc97d <panic+197> (frame at 0xc5633bd0) 52 1.2.4.2 minoura # 53 1.2.4.2 minoura # due to limitations of gdb scripting. 54 1.2.4.2 minoura 55 1.2.4.2 minoura define stacktrace 56 1.2.4.2 minoura set $frame=$arg0 57 1.2.4.2 minoura set $retaddr=$arg1 58 1.2.4.2 minoura 59 1.2.4.2 minoura while ($frame != 0) 60 1.2.4.2 minoura set $callpc = $retaddr 61 1.2.4.2 minoura set $retaddr = *(long*)($frame+sizeof(long*)) 62 1.2.4.2 minoura 63 1.2.4.2 minoura set $inst=*(long*)$retaddr 64 1.2.4.2 minoura if (($inst & 0xff) == 0x59) 65 1.2.4.2 minoura # (popl %ecx) 66 1.2.4.2 minoura set $narg=1 67 1.2.4.2 minoura else if (($inst & 0xffff) == 0xc483) 68 1.2.4.2 minoura # (addl %n, %esp) 69 1.2.4.2 minoura set $narg = (($inst >> 16) & 0xff) / 4 70 1.2.4.2 minoura else 71 1.2.4.2 minoura set $narg = 5 72 1.2.4.2 minoura end 73 1.2.4.2 minoura 74 1.2.4.2 minoura set $argp = $frame+sizeof(long*)+sizeof(int) 75 1.2.4.2 minoura printf " " 76 1.2.4.2 minoura output/a $callpc 77 1.2.4.2 minoura printf "(" 78 1.2.4.2 minoura while ($narg != 0) 79 1.2.4.2 minoura printf "0x%lx", *(long*)$argp 80 1.2.4.2 minoura set $argp = $argp+sizeof(long*) 81 1.2.4.2 minoura set $narg = $narg-1 82 1.2.4.2 minoura if ($narg != 0) 83 1.2.4.2 minoura printf "," 84 1.2.4.2 minoura end 85 1.2.4.2 minoura end 86 1.2.4.2 minoura printf ")\n at " 87 1.2.4.2 minoura output/a $retaddr 88 1.2.4.2 minoura printf " (frame at %#x)\n", $frame 89 1.2.4.2 minoura 90 1.2.4.2 minoura set $frame=*(long*)$frame 91 1.2.4.2 minoura end 92 1.2.4.2 minoura end 93 1.2.4.2 minoura 94 1.2.4.2 minoura document stacktrace 95 1.2.4.2 minoura ==> (gdb) stacktrace FP IP 96 1.2.4.2 minoura print a backtrace of all stack frames, starting at frame pointer FP, 97 1.2.4.2 minoura and instruction pointer IP. 98 1.2.4.2 minoura end 99 1.2.4.2 minoura 100 1.2.4.2 minoura define stack 101 1.2.4.2 minoura stacktrace $ebp $eip 102 1.2.4.2 minoura end 103 1.2.4.2 minoura 104 1.2.4.2 minoura document stack 105 1.2.4.2 minoura => (gdb) stack 106 1.2.4.2 minoura Print a backtrace of all strack frames, starting at the current $ebp 107 1.2.4.2 minoura and $eip. 108 1.2.4.2 minoura end 109
Indexes created Wed Oct 01 15:09:59 GMT 2025