1/*- 2 * Copyright (c) 2005 Antoine Brodin 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/systm.h> 31#include <sys/param.h> 32#include <sys/proc.h> 33#include <sys/stack.h> 34 35#include <machine/vmparam.h> 36#include <machine/pcb.h> 37#include <machine/stack.h> 38 39static void 40stack_capture(struct stack *st, u_int32_t *frame) 41{ 42 vm_offset_t callpc; 43 44 stack_zero(st); 45 while (1) { 46 if (!INKERNEL(frame)) 47 break; 48 callpc = frame[FR_SCP]; 49 if (stack_put(st, callpc) == -1) 50 break; 51 frame = (u_int32_t *)(frame[FR_RFP]); 52 } 53} 54 55void 56stack_save_td(struct stack *st, struct thread *td) 57{ 58 u_int32_t *frame; 59 60 if (TD_IS_SWAPPED(td)) 61 panic("stack_save_td: swapped"); 62 if (TD_IS_RUNNING(td)) 63 panic("stack_save_td: running"); 64 65 frame = (u_int32_t *)td->td_pcb->un_32.pcb32_r11; 66 stack_capture(st, frame); 67} 68 69void 70stack_save(struct stack *st) 71{ 72 u_int32_t *frame; 73 74 frame = (u_int32_t *)__builtin_frame_address(0); 75 stack_capture(st, frame); 76} 77