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📄 altivec.c(4.74 KB)
📄 autoconf.c(2.69 KB)
📄 bus_machdep.c(22.3 KB)
📄 busdma_machdep.c(31.78 KB)
📄 clock.c(8.72 KB)
📄 copyinout.c(15.08 KB)
📄 cpu.c(23.74 KB)
📄 cpu_subr64.S(2.99 KB)
📄 db_disasm.c(31.78 KB)
📄 db_hwwatch.c(1.71 KB)
📄 db_interface.c(1.78 KB)
📄 db_trace.c(8.56 KB)
📄 dump_machdep.c(1.63 KB)
📄 elf32_machdep.c(11.71 KB)
📄 elf64_machdep.c(12 KB)
📄 elf_common.c(4.21 KB)
📄 exec_machdep.c(29.55 KB)
📄 fpu.c(6.47 KB)
📄 gdb_machdep.c(3.5 KB)
📄 genassym.c(10.78 KB)
📄 in_cksum.c(6.64 KB)
📄 interrupt.c(3.9 KB)
📄 intr_machdep.c(15.53 KB)
📄 iommu_if.m(1.74 KB)
📄 machdep.c(21.72 KB)
📄 mem.c(8.4 KB)
📄 minidump_machdep.c(9.09 KB)
📄 mp_machdep.c(8.81 KB)
📄 nexus.c(7.06 KB)
📄 openpic.c(11.35 KB)
📄 pic_if.m(2.45 KB)
📄 platform.c(9.15 KB)
📄 platform_if.m(6.15 KB)
📄 pmap_dispatch.c(8.92 KB)
📄 ptrace_machdep.c(3.58 KB)
📄 sc_machdep.c(2.21 KB)
📄 setjmp.S(2.45 KB)
📄 sigcode32.S(2.4 KB)
📄 sigcode64.S(2.94 KB)
📄 stack_machdep.c(3.1 KB)
📄 support.S(11.06 KB)
📄 swtch32.S(7.31 KB)
📄 swtch64.S(10.59 KB)
📄 syncicache.c(2.51 KB)
📄 sys_machdep.c(1.73 KB)
📄 trap.c(25.06 KB)
📄 uio_machdep.c(4.04 KB)
📄 uma_machdep.c(2.89 KB)
📄 vm_machdep.c(7.5 KB)

Editing: stack_machdep.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2005 Antoine Brodin
 * 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 <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/stack.h>
#include <sys/systm.h>

#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>

#include <machine/db_machdep.h>
#include <machine/pcb.h>
#include <machine/spr.h>
#include <machine/stack.h>
#include <machine/trap.h>

#ifdef __powerpc64__
#define CALLOFFSET 8 /* Account for the TOC reload slot */
#else
#define CALLOFFSET 4
#endif

static void
stack_capture(struct stack *st, vm_offset_t frame)
{
	vm_offset_t callpc;

stack_zero(st);
	if (frame < PAGE_SIZE)
		return;
	while (1) {
		frame = *(vm_offset_t *)frame;
		if (frame < PAGE_SIZE)
			break;

#ifdef __powerpc64__
		callpc = *(vm_offset_t *)(frame + 16) - 4;
	    #else
		callpc = *(vm_offset_t *)(frame + 4) - 4;
	    #endif
		if ((callpc & 3) || (callpc < 0x100))
			break;

/*
		 * Don't bother traversing trap-frames - there should
		 * be enough info down to the frame to work out where
		 * things are going wrong. Plus, prevents this shortened
		 * version of code from accessing user-space frames
		 */
		if (callpc + CALLOFFSET == (vm_offset_t) &trapexit ||
		    callpc + CALLOFFSET == (vm_offset_t) &asttrapexit)
			break;

if (stack_put(st, callpc) == -1)
			break;
	}
}

int
stack_save_td(struct stack *st, struct thread *td)
{
	vm_offset_t frame;

THREAD_LOCK_ASSERT(td, MA_OWNED);
	KASSERT(!TD_IS_SWAPPED(td),
	    ("stack_save_td: thread %p is swapped", td));

if (TD_IS_RUNNING(td))
		return (EOPNOTSUPP);

frame = td->td_pcb->pcb_sp;
	stack_capture(st, frame);
	return (0);
}

void
stack_save(struct stack *st)
{
	register_t frame;

frame = (register_t)__builtin_frame_address(0);
	stack_capture(st, frame);
}

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Editing: stack_machdep.c

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