82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* As a special exception, if you link this library with other files,
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some of which are compiled with GCC, to produce an executable,
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this library does not by itself cause the resulting executable
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to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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#include <stddef.h>
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#include <memory.h>
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#define IA64_UNWIND_INFO
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#include "ia64-frame.h"
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static int
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ia64_backtrace_helper (void **array, void *throw_pc,
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ia64_frame_state *throw_frame,
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ia64_frame_state *frame, void *bsp, int size)
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{
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void *pc = NULL;
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int frame_count = 0;
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unwind_info_ptr *info;
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asm volatile ("flushrs"); /* Make the local register stacks available. */
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/* Start at our stack frame, get our state. */
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info = build_ia64_frame_state (throw_pc, throw_frame, bsp, NULL);
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memcpy (frame, throw_frame, sizeof (*frame));
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while (info && frame_count < size)
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{
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pc = array[frame_count++] = get_real_reg_value (&frame->rp);
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--pc;
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bsp = calc_caller_bsp
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((long)get_real_reg_value (&frame->pfs), frame->my_bsp);
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info = build_ia64_frame_state (pc, frame, bsp, NULL);
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if (frame->rp.loc_type == IA64_UNW_LOC_TYPE_NONE) /* We've finished. */
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break;
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}
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return frame_count;
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}
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int
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_Jv_ia64_backtrace (void **array, int size)
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{
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ia64_frame_state my_frame;
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ia64_frame_state originator; /* For the context handler is in. */
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void *bsp;
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/* Do any necessary initialization to access arbitrary stack frames.
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This forces gcc to save memory in our stack frame for saved
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registers. */
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__builtin_unwind_init ();
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label_ia64:
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bsp = __builtin_ia64_bsp ();
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return ia64_backtrace_helper (array, &&label_ia64, &my_frame,
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&originator, bsp, size);
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}
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