/* SJLJ exception handling and frame unwind runtime interface routines.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006,
+ 2009 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
- In addition to the permissions in the GNU General Public License, the
- Free Software Foundation gives you unlimited permission to link the
- compiled version of this file into combinations with other programs,
- and to distribute those combinations without any restriction coming
- from the use of this file. (The General Public License restrictions
- do apply in other respects; for example, they cover modification of
- the file, and distribution when not linked into a combined
- executable.)
-
GCC is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
License for more details.
- You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Under Section 7 of GPL version 3, you are granted additional
+ permissions described in the GCC Runtime Library Exception, version
+ 3.1, as published by the Free Software Foundation.
+
+ You should have received a copy of the GNU General Public License and
+ a copy of the GCC Runtime Library Exception along with this program;
+ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+ <http://www.gnu.org/licenses/>. */
#include "tconfig.h"
#include "tsystem.h"
extern void longjmp(jmp_buf, int) __attribute__((noreturn));
#endif
#else
-#define setjmp __builtin_setjmp
#define longjmp __builtin_longjmp
#endif
+/* The setjmp side is dealt with in the except.c file. */
+#undef setjmp
+#define setjmp setjmp_should_not_be_used_in_this_file
+
+
/* This structure is allocated on the stack of the target function.
This must match the definition created in except.c:init_eh. */
struct SjLj_Function_Context
_Unwind_GetCFA (struct _Unwind_Context *context __attribute__((unused)))
{
/* ??? Ideally __builtin_setjmp places the CFA in the jmpbuf. */
+
+#ifndef DONT_USE_BUILTIN_SETJMP
+ /* This is a crude imitation of the CFA: the saved stack pointer.
+ This is roughly the CFA of the frame before CONTEXT. When using the
+ DWARF-2 unwinder _Unwind_GetCFA returns the CFA of the frame described
+ by CONTEXT instead; but for DWARF-2 the cleanups associated with
+ CONTEXT have already been run, and for SJLJ they have not yet been. */
+ if (context->fc != NULL)
+ return (_Unwind_Word) context->fc->jbuf[2];
+#endif
+
+ /* Otherwise we're out of luck for now. */
return (_Unwind_Word) 0;
}
return context->fc->call_site + 1;
}
+_Unwind_Ptr
+_Unwind_GetIPInfo (struct _Unwind_Context *context, int *ip_before_insn)
+{
+ *ip_before_insn = 0;
+ if (context->fc != NULL)
+ return context->fc->call_site + 1;
+ else
+ return 0;
+}
+
/* Set the return landing pad index in CONTEXT. */
void
context->fc = context->fc->prev;
}
+static void
+uw_advance_context (struct _Unwind_Context *context, _Unwind_FrameState *fs)
+{
+ _Unwind_SjLj_Unregister (context->fc);
+ uw_update_context (context, fs);
+}
+
static inline void
uw_init_context (struct _Unwind_Context *context)
{