office-gobmx/sal/osl/unx/backtrace_solaris.c
Noel Grandin ff5863d46c split up the backtrace implementations into separate files
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>
2023-10-12 16:11:16 +02:00

134 lines
3.5 KiB
C

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