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-rw-r--r--sal/osl/unx/backtrace.c303
1 files changed, 303 insertions, 0 deletions
diff --git a/sal/osl/unx/backtrace.c b/sal/osl/unx/backtrace.c
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index 000000000..a3aeb3dae
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+++ b/sal/osl/unx/backtrace.c
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+/* -*- 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 .
+ */
+
+#include <sal/types.h>
+
+#ifdef __sun
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <setjmp.h>
+#include <stdio.h>
+#include <sys/frame.h>
+#include "backtrace.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 );
+ }
+}
+
+#elif defined FREEBSD || defined NETBSD || defined OPENBSD || defined(DRAGONFLY)
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <setjmp.h>
+#include <stddef.h>
+#include <stdio.h>
+#include "backtrace.h"
+
+#if defined(POWERPC) || defined(POWERPC64)
+
+#define FRAME_PTR_OFFSET 1
+#define FRAME_OFFSET 0
+
+#else
+
+#define FRAME_PTR_OFFSET 3
+#define FRAME_OFFSET 0
+
+#endif
+
+int backtrace( void **buffer, int max_frames )
+{
+ struct frame *fp;
+ jmp_buf ctx;
+ int i;
+ /* get stack- and framepointer */
+ setjmp(ctx);
+ fp = (struct frame*)(((size_t*)(ctx))[FRAME_PTR_OFFSET]);
+ for ( i=0; (i<FRAME_OFFSET) && (fp!=0); i++)
+ fp = fp->fr_savfp;
+ /* iterate through backtrace */
+ for (i=0; fp && fp->fr_savpc && i<max_frames; i++)
+ {
+ /* store frame */
+ *(buffer++) = (void *)fp->fr_savpc;
+ /* next frame */
+ fp=fp->fr_savfp;
+ }
+ 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 );
+ }
+}
+
+#elif defined( MACOSX )
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include "backtrace.h"
+
+/* glib backtrace is only available on MacOsX 10.5 or higher
+ so we do it on our own */
+
+int backtrace( void **buffer, int max_frames )
+{
+ void **frame = (void **)__builtin_frame_address(0);
+ void **bp = ( void **)(*frame);
+ void *ip = frame[1];
+ int i;
+
+ for ( i = 0; bp && ip && i < max_frames; i++ )
+ {
+ *(buffer++) = ip;
+
+ ip = bp[1];
+ bp = (void**)(bp[0]);
+ }
+
+ 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;
+
+ if ( 0 != dladdr( *pFramePtr, &dli ) )
+ {
+ ptrdiff_t offset;
+
+ if ( dli.dli_fname && dli.dli_fbase )
+ {
+ offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_fbase;
+ fprintf( fp, "%s+0x%tx", dli.dli_fname, offset );
+ }
+ if ( dli.dli_sname && dli.dli_saddr )
+ {
+ offset = (ptrdiff_t)*pFramePtr - (ptrdiff_t)dli.dli_saddr;
+ fprintf( fp, "(%s+0x%tx)", dli.dli_sname, offset );
+ }
+ }
+ fprintf( fp, "[%p]\n", *pFramePtr );
+ }
+
+ fclose( fp );
+ }
+}
+
+#elif !defined LINUX
+
+int backtrace( void **buffer, int max_frames )
+{
+ (void)buffer; (void)max_frames;
+ return 0;
+}
+
+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 )
+{
+ (void)buffer; (void)size; (void)fd;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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