PR c++/33620

[pf3gnuchains/gcc-fork.git] / gcc / unwind-generic.h

diff --git a/gcc/unwind-generic.h b/gcc/unwind-generic.h
index 9c0c7da..cebd663 100644 (file)
--- a/gcc/unwind-generic.h
+++ b/gcc/unwind-generic.h
@@ -1,5 +1,5 @@
 /* Exception handling and frame unwind runtime interface routines.
-   Copyright (C) 2001, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2003, 2004, 2006 Free Software Foundation, Inc.
 
    This file is part of GCC.
 
@@ -108,6 +108,12 @@ typedef int _Unwind_Action;
 #define _UA_FORCE_UNWIND       8
 #define _UA_END_OF_STACK       16
 
+/* The target can override this macro to define any back-end-specific
+   attributes required for the lowest-level stack frame.  */
+#ifndef LIBGCC2_UNWIND_ATTRIBUTE
+#define LIBGCC2_UNWIND_ATTRIBUTE
+#endif
+
 /* This is an opaque type used to refer to a system-specific data
    structure used by the system unwinder. This context is created and
    destroyed by the system, and passed to the personality routine
@@ -115,7 +121,8 @@ typedef int _Unwind_Action;
 struct _Unwind_Context;
 
 /* Raise an exception, passing along the given exception object.  */
-extern _Unwind_Reason_Code _Unwind_RaiseException (struct _Unwind_Exception *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_RaiseException (struct _Unwind_Exception *);
 
 /* Raise an exception for forced unwinding.  */
 
@@ -123,20 +130,21 @@ typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
      (int, _Unwind_Action, _Unwind_Exception_Class,
       struct _Unwind_Exception *, struct _Unwind_Context *, void *);
 
-extern _Unwind_Reason_Code _Unwind_ForcedUnwind (struct _Unwind_Exception *,
-                                                _Unwind_Stop_Fn,
-                                                void *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_ForcedUnwind (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
 
 /* Helper to invoke the exception_cleanup routine.  */
 extern void _Unwind_DeleteException (struct _Unwind_Exception *);
 
 /* Resume propagation of an existing exception.  This is used after
    e.g. executing cleanup code, and not to implement rethrowing.  */
-extern void _Unwind_Resume (struct _Unwind_Exception *);
+extern void LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_Resume (struct _Unwind_Exception *);
 
 /* @@@ Resume propagation of an FORCE_UNWIND exception, or to rethrow
    a normal exception that was handled.  */
-extern _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (struct _Unwind_Exception *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *);
 
 /* @@@ Use unwind data to perform a stack backtrace.  The trace callback
    is called for every stack frame in the call chain, but no cleanup
@@ -144,7 +152,8 @@ extern _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (struct _Unwind_Exception *
 typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)
      (struct _Unwind_Context *, void *);
 
-extern _Unwind_Reason_Code _Unwind_Backtrace (_Unwind_Trace_Fn, void *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_Backtrace (_Unwind_Trace_Fn, void *);
 
 /* These functions are used for communicating information about the unwind
    context (i.e. the unwind descriptors and the user register state) between
@@ -155,6 +164,7 @@ extern _Unwind_Word _Unwind_GetGR (struct _Unwind_Context *, int);
 extern void _Unwind_SetGR (struct _Unwind_Context *, int, _Unwind_Word);
 
 extern _Unwind_Ptr _Unwind_GetIP (struct _Unwind_Context *);
+extern _Unwind_Ptr _Unwind_GetIPInfo (struct _Unwind_Context *, int *);
 extern void _Unwind_SetIP (struct _Unwind_Context *, _Unwind_Ptr);
 
 /* @@@ Retrieve the CFA of the given context.  */
@@ -190,12 +200,14 @@ struct SjLj_Function_Context;
 extern void _Unwind_SjLj_Register (struct SjLj_Function_Context *);
 extern void _Unwind_SjLj_Unregister (struct SjLj_Function_Context *);
 
-extern _Unwind_Reason_Code _Unwind_SjLj_RaiseException
-     (struct _Unwind_Exception *);
-extern _Unwind_Reason_Code _Unwind_SjLj_ForcedUnwind
-     (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
-extern void _Unwind_SjLj_Resume (struct _Unwind_Exception *);
-extern _Unwind_Reason_Code _Unwind_SjLj_Resume_or_Rethrow (struct _Unwind_Exception *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_SjLj_RaiseException (struct _Unwind_Exception *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_SjLj_ForcedUnwind (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
+extern void LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_SjLj_Resume (struct _Unwind_Exception *);
+extern _Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
+_Unwind_SjLj_Resume_or_Rethrow (struct _Unwind_Exception *);
 
 /* @@@ The following provide access to the base addresses for text
    and data-relative addressing in the LDSA.  In order to stay link
@@ -229,6 +241,33 @@ extern _Unwind_Ptr _Unwind_GetTextRelBase (struct _Unwind_Context *);
    contains it.  */
 extern void * _Unwind_FindEnclosingFunction (void *pc);
 
+#ifndef __SIZEOF_LONG__
+  #error "__SIZEOF_LONG__ macro not defined"
+#endif
+
+#ifndef __SIZEOF_POINTER__
+  #error "__SIZEOF_POINTER__ macro not defined"
+#endif
+
+
+/* leb128 type numbers have a potentially unlimited size.
+   The target of the following definitions of _sleb128_t and _uleb128_t
+   is to have efficient data types large enough to hold the leb128 type
+   numbers used in the unwind code.
+   Mostly these types will simply be defined to long and unsigned long
+   except when a unsigned long data type on the target machine is not
+   capable of storing a pointer.  */
+
+#if __SIZEOF_LONG__ >= __SIZEOF_POINTER__
+  typedef long _sleb128_t;
+  typedef unsigned long _uleb128_t;
+#elif __SIZEOF_LONG_LONG__ >= __SIZEOF_POINTER__
+  typedef long long _sleb128_t;
+  typedef unsigned long long _uleb128_t;
+#else
+# error "What type shall we use for _sleb128_t?"
+#endif
+
 #ifdef __cplusplus
 }
 #endif