ff5863d46c
Because I cannot keep what is inside what #ifdef straight in my head Change-Id: Ie986a6928df179fc0e30ca12c6d2a6866ed82078 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/157861 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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// This file is #include from backtrace.c
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#include <dlfcn.h>
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#include <pthread.h>
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#include <setjmp.h>
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#include <stdio.h>
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#include <sys/frame.h>
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#if defined(SPARC)
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#if defined IS_LP64
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#define FRAME_PTR_OFFSET 1
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#define FRAME_OFFSET 0
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#define STACK_BIAS 0x7ff
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#else
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#define FRAME_PTR_OFFSET 1
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#define FRAME_OFFSET 0
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#define STACK_BIAS 0
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#endif
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#elif defined( INTEL )
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#define FRAME_PTR_OFFSET 3
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#define FRAME_OFFSET 0
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#define STACK_BIAS 0
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#else
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#error Unknown Solaris target platform.
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#endif /* defined SPARC or INTEL */
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int backtrace( void **buffer, int max_frames )
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{
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jmp_buf ctx;
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long fpval;
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struct frame *fp;
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int i;
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/* flush register windows */
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#ifdef SPARC
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asm("ta 3");
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#endif
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/* get stack- and framepointer */
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setjmp(ctx);
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fpval = ((long*)(ctx))[FRAME_PTR_OFFSET];
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fp = (struct frame*)((char*)(fpval) + STACK_BIAS);
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for (i = 0; (i < FRAME_OFFSET) && (fp != 0); i++)
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fp = (struct frame*)((char*)(fp->fr_savfp) + STACK_BIAS);
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/* iterate through backtrace */
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for (i = 0; (fp != 0) && (fp->fr_savpc != 0) && (i < max_frames); i++)
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{
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/* saved (prev) frame */
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struct frame * prev = (struct frame*)((char*)(fp->fr_savfp) + STACK_BIAS);
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/* store frame */
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*(buffer++) = (void*)(fp->fr_savpc);
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/* prev frame (w/ stack growing top down) */
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fp = (prev > fp) ? prev : 0;
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}
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/* return number of frames stored */
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return i;
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}
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char ** backtrace_symbols(void * const * buffer, int size)
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{
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(void)buffer; (void)size;
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return NULL; /*TODO*/
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}
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void backtrace_symbols_fd( void **buffer, int size, int fd )
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{
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FILE *fp = fdopen( fd, "w" );
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if ( fp )
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{
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void **pFramePtr;
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for ( pFramePtr = buffer; size > 0 && pFramePtr && *pFramePtr; pFramePtr++, size-- )
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{
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Dl_info dli;
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ptrdiff_t offset;
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if ( 0 != dladdr( *pFramePtr, &dli ) )
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{
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if ( dli.dli_fname && dli.dli_fbase )
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{
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offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_fbase;
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fprintf( fp, "%s+0x%" SAL_PRI_PTRDIFFT "x", dli.dli_fname, offset );
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}
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if ( dli.dli_sname && dli.dli_saddr )
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{
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offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_saddr;
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fprintf( fp, "(%s+0x%" SAL_PRI_PTRDIFFT "x)", dli.dli_sname, offset );
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}
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}
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fprintf( fp, "[%p]\n", *pFramePtr );
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}
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fclose( fp );
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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