Author: davidxu
Date: Thu Sep 30 01:25:54 2010
New Revision: 213288
URL: http://svn.freebsd.org/changeset/base/213288
Log:
Import unwind.h from libunwind-0.99.
Approved by: core (kib, rwatson, imp, brooks)
Added:
head/include/unwind.h (contents, props changed)
Added: head/include/unwind.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/include/unwind.h Thu Sep 30 01:25:54 2010 (r213288)
@@ -0,0 +1,154 @@
+/* $FreeBSD$ */
+
+/* libunwind - a platform-independent unwind library
+ Copyright (C) 2003 Hewlett-Packard Co
+ Contributed by David Mosberger-Tang <dav...@hpl.hp.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
+
+#ifndef _UNWIND_H
+#define _UNWIND_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Minimal interface as per C++ ABI draft standard:
+
+ http://www.codesourcery.com/cxx-abi/abi-eh.html */
+
+typedef enum
+ {
+ _URC_NO_REASON = 0,
+ _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
+ _URC_FATAL_PHASE2_ERROR = 2,
+ _URC_FATAL_PHASE1_ERROR = 3,
+ _URC_NORMAL_STOP = 4,
+ _URC_END_OF_STACK = 5,
+ _URC_HANDLER_FOUND = 6,
+ _URC_INSTALL_CONTEXT = 7,
+ _URC_CONTINUE_UNWIND = 8
+ }
+_Unwind_Reason_Code;
+
+typedef int _Unwind_Action;
+
+#define _UA_SEARCH_PHASE 1
+#define _UA_CLEANUP_PHASE 2
+#define _UA_HANDLER_FRAME 4
+#define _UA_FORCE_UNWIND 8
+
+struct _Unwind_Context; /* opaque data-structure */
+struct _Unwind_Exception; /* forward-declaration */
+
+typedef void (*_Unwind_Exception_Cleanup_Fn) (_Unwind_Reason_Code,
+ struct _Unwind_Exception *);
+
+typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (int, _Unwind_Action,
+ unsigned long,
+ struct _Unwind_Exception *,
+ struct _Unwind_Context *,
+ void *);
+
+/* The C++ ABI requires exception_class, private_1, and private_2 to
+ be of type uint64 and the entire structure to be
+ double-word-aligned, but that seems a bit overly IA-64-specific.
+ Using "unsigned long" instead should give us the desired effect on
+ IA-64, while being more general. */
+struct _Unwind_Exception
+ {
+ unsigned long exception_class;
+ _Unwind_Exception_Cleanup_Fn exception_cleanup;
+ unsigned long private_1;
+ unsigned long private_2;
+ };
+
+extern _Unwind_Reason_Code _Unwind_RaiseException (struct _Unwind_Exception *);
+extern _Unwind_Reason_Code _Unwind_ForcedUnwind (struct _Unwind_Exception *,
+ _Unwind_Stop_Fn, void *);
+extern void _Unwind_Resume (struct _Unwind_Exception *);
+extern void _Unwind_DeleteException (struct _Unwind_Exception *);
+extern unsigned long _Unwind_GetGR (struct _Unwind_Context *, int);
+extern void _Unwind_SetGR (struct _Unwind_Context *, int, unsigned long);
+extern unsigned long _Unwind_GetIP (struct _Unwind_Context *);
+extern unsigned long _Unwind_GetIPInfo (struct _Unwind_Context *, int *);
+extern void _Unwind_SetIP (struct _Unwind_Context *, unsigned long);
+extern unsigned long _Unwind_GetLanguageSpecificData (struct _Unwind_Context*);
+extern unsigned long _Unwind_GetRegionStart (struct _Unwind_Context *);
+
+#ifdef _GNU_SOURCE
+
+/* Callback for _Unwind_Backtrace(). The backtrace stops immediately
+ if the callback returns any value other than _URC_NO_REASON. */
+typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn) (struct _Unwind_Context *,
+ void *);
+
+/* See http://gcc.gnu.org/ml/gcc-patches/2001-09/msg00082.html for why
+ _UA_END_OF_STACK exists. */
+# define _UA_END_OF_STACK 16
+
+/* If the unwind was initiated due to a forced unwind, resume that
+ operation, else re-raise the exception. This is used by
+ __cxa_rethrow(). */
+extern _Unwind_Reason_Code
+ _Unwind_Resume_or_Rethrow (struct _Unwind_Exception *);
+
+/* See http://gcc.gnu.org/ml/gcc-patches/2003-09/msg00154.html for why
+ _Unwind_GetBSP() exists. */
+extern unsigned long _Unwind_GetBSP (struct _Unwind_Context *);
+
+/* Return the "canonical frame address" for the given context.
+ This is used by NPTL... */
+extern unsigned long _Unwind_GetCFA (struct _Unwind_Context *);
+
+/* Return the base-address for data references. */
+extern unsigned long _Unwind_GetDataRelBase (struct _Unwind_Context *);
+
+/* Return the base-address for text references. */
+extern unsigned long _Unwind_GetTextRelBase (struct _Unwind_Context *);
+
+/* Call _Unwind_Trace_Fn once for each stack-frame, without doing any
+ cleanup. The first frame for which the callback is invoked is the
+ one for the caller of _Unwind_Backtrace(). _Unwind_Backtrace()
+ returns _URC_END_OF_STACK when the backtrace stopped due to
+ reaching the end of the call-chain or _URC_FATAL_PHASE1_ERROR if it
+ stops for any other reason. */
+extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *);
+
+/* Find the start-address of the procedure containing the specified IP
+ or NULL if it cannot be found (e.g., because the function has no
+ unwind info). Note: there is not necessarily a one-to-one
+ correspondence between source-level functions and procedures: some
+ functions don't have unwind-info and others are split into multiple
+ procedures. */
+extern void *_Unwind_FindEnclosingFunction (void *);
+
+/* See also Linux Standard Base Spec:
+ http://www.linuxbase.org/spec/refspecs/LSB_1.3.0/gLSB/gLSB/libgcc-s.html */
+
+#endif /* _GNU_SOURCE */
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif /* _UNWIND_H */
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