stack_machdep.c

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    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/param.h>
   31 #include <sys/proc.h>
   32 #include <sys/stack.h>
   33 #include <sys/systm.h>
   34 
   35 #include <machine/pcb.h>
   36 #include <machine/stack.h>
   37 #include <machine/vmparam.h>
   38 
   39 static void stack_capture(struct stack *st, struct frame *frame);
   40 
   41 static void
   42 stack_capture(struct stack *st, struct frame *frame)
   43 {
   44         struct frame *fp;
   45         vm_offset_t callpc;
   46 
   47         stack_zero(st);
   48         fp = frame;
   49         for (;;) {
   50                 if (!INKERNEL((vm_offset_t)fp) ||
   51                     !ALIGNED_POINTER(fp, uint64_t))
   52                         break;
   53                 callpc = fp->fr_pc;
   54                 if (!INKERNEL(callpc))
   55                         break;
   56                 /* Don't bother traversing trap frames. */
   57                 if ((callpc > (uint64_t)tl_trap_begin &&
   58                     callpc < (uint64_t)tl_trap_end) ||
   59                     (callpc > (uint64_t)tl_text_begin &&
   60                     callpc < (uint64_t)tl_text_end))
   61                         break;
   62                 if (stack_put(st, callpc) == -1)
   63                         break;
   64                 if (v9next_frame(fp) <= fp ||
   65                     v9next_frame(fp) >= frame + KSTACK_PAGES * PAGE_SIZE)
   66                         break;
   67                 fp = v9next_frame(fp);
   68         }
   69 }
   70 
   71 void
   72 stack_save_td(struct stack *st, struct thread *td)
   73 {
   74 
   75         if (TD_IS_SWAPPED(td))
   76                 panic("stack_save_td: swapped");
   77         if (TD_IS_RUNNING(td))
   78                 panic("stack_save_td: running");
   79 
   80         stack_capture(st, (struct frame *)(td->td_pcb->pcb_sp + SPOFF));
   81 }
   82 
   83 void
   84 stack_save(struct stack *st)
   85 {
   86 
   87         stack_capture(st, (struct frame *)__builtin_frame_address(1));
   88 }

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FreeBSD/Linux Kernel Cross Reference sys/sparc64/sparc64/stack_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/sparc64/sparc64/stack_machdep.c