sal/osl/unx/backtrace_solaris.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 // This file is #include from backtrace.c
  21
  22 #include <dlfcn.h>
  23 #include <pthread.h>
  24 #include <setjmp.h>
  25 #include <stdio.h>
  26 #include <sys/frame.h>
  27
  28 #if defined(SPARC)
  29
  30 #if defined IS_LP64
  31
  32 #define FRAME_PTR_OFFSET 1
  33 #define FRAME_OFFSET     0
  34 #define STACK_BIAS       0x7ff
  35
  36 #else
  37
  38 #define FRAME_PTR_OFFSET 1
  39 #define FRAME_OFFSET     0
  40 #define STACK_BIAS       0
  41
  42 #endif
  43
  44 #elif defined( INTEL )
  45
  46 #define FRAME_PTR_OFFSET 3
  47 #define FRAME_OFFSET     0
  48 #define STACK_BIAS       0
  49
  50 #else
  51
  52 #error Unknown Solaris target platform.
  53
  54 #endif /* defined SPARC or INTEL */
  55
  56 int backtrace( void **buffer, int max_frames )
  57 {
  58     jmp_buf       ctx;
  59     long          fpval;
  60     struct frame *fp;
  61     int i;
  62
  63     /* flush register windows */
  64 #ifdef SPARC
  65     asm("ta 3");
  66 #endif
  67
  68     /* get stack- and framepointer */
  69     setjmp(ctx);
  70
  71     fpval = ((long*)(ctx))[FRAME_PTR_OFFSET];
  72     fp = (struct frame*)((char*)(fpval) + STACK_BIAS);
  73
  74     for (i = 0; (i < FRAME_OFFSET) && (fp != 0); i++)
  75         fp = (struct frame*)((char*)(fp->fr_savfp) + STACK_BIAS);
  76
  77     /* iterate through backtrace */
  78     for (i = 0; (fp != 0) && (fp->fr_savpc != 0) && (i < max_frames); i++)
  79     {
  80         /* saved (prev) frame */
  81         struct frame * prev = (struct frame*)((char*)(fp->fr_savfp) + STACK_BIAS);
  82
  83         /* store frame */
  84         *(buffer++) = (void*)(fp->fr_savpc);
  85
  86         /* prev frame (w/ stack growing top down) */
  87         fp = (prev > fp) ? prev : 0;
  88     }
  89
  90     /* return number of frames stored */
  91     return i;
  92 }
  93
  94 char ** backtrace_symbols(void * const * buffer, int size)
  95 {
  96     (void)buffer; (void)size;
  97     return NULL; /*TODO*/
  98 }
  99
 100 void backtrace_symbols_fd( void **buffer, int size, int fd )
 101 {
 102     FILE    *fp = fdopen( fd, "w" );
 103
 104     if ( fp )
 105     {
 106         void **pFramePtr;
 107
 108         for ( pFramePtr = buffer; size > 0 && pFramePtr && *pFramePtr; pFramePtr++, size-- )
 109         {
 110             Dl_info     dli;
 111             ptrdiff_t   offset;
 112
 113             if ( 0 != dladdr( *pFramePtr, &dli ) )
 114             {
 115                 if ( dli.dli_fname && dli.dli_fbase )
 116                 {
 117                     offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_fbase;
 118                     fprintf( fp, "%s+0x%" SAL_PRI_PTRDIFFT "x", dli.dli_fname, offset );
 119                 }
 120                 if ( dli.dli_sname && dli.dli_saddr )
 121                 {
 122                     offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_saddr;
 123                     fprintf( fp, "(%s+0x%" SAL_PRI_PTRDIFFT "x)", dli.dli_sname, offset );
 124                 }
 125             }
 126             fprintf( fp, "[%p]\n", *pFramePtr );
 127         }
 128
 129         fclose( fp );
 130     }
 131 }
 132
 133
 134 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */