Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 246 insertions, 0 deletions

diff --git a/sal/osl/unx/backtrace.c b/sal/osl/unx/backtrace.c
new file mode 100644
index 000000000..f7bd01c33
--- /dev/null
+++ b/sal/osl/unx/backtrace.c
@@ -0,0 +1,246 @@
+/* -*- 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 "backtrace.h"
+
+#if ! HAVE_FEATURE_BACKTRACE /* no GNU backtrace implementation available */
+
+#include <sal/types.h>
+
+#ifdef __sun /* Solaris */
+
+#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 );
+    }
+}
+
+#elif defined FREEBSD || defined NETBSD || defined OPENBSD || defined(DRAGONFLY)
+
+#include <dlfcn.h>
+#include <pthread.h>
+#include <setjmp.h>
+#include <stddef.h>
+#include <stdio.h>
+
+/* no frame.h on FreeBSD */
+struct frame {
+    struct frame *fr_savfp;
+    long    fr_savpc;
+};
+
+#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 );
+    }
+}
+
+#else /* not GNU/BSD/Solaris */
+
+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 /* not GNU/BSD/Solaris */
+
+#endif /* ! HAVE_FEATURE_BACKTRACE */
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */