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2010-08-26 Maciej Rozycki <macro@codesourcery.com>
Merge from Sourcery G++ 4.4:
2009-02-17 Andrew Jenner <andrew@codesourcery.com>
Maciej Rozycki <macro@codesourcery.com>
gcc/
* unwind.inc (_Unwind_RaiseException): Use return value of
uw_init_context.
* unwind-dw2.c (uw_init_context): Make macro an expression instead of
a statement.
(uw_init_context_1): Add return value.
* unwind-sjlj.c (uw_init_context): Add return value.
2010-08-26 Andrew Stubbs <ams@codesourcery.com>
Merge from Ubuntu GCC:
=== modified file 'gcc/unwind-dw2.c'
--- old/gcc/unwind-dw2.c 2010-04-27 08:41:30 +0000
+++ new/gcc/unwind-dw2.c 2010-08-26 15:38:19 +0000
@@ -1414,16 +1414,12 @@
/* Fill in CONTEXT for top-of-stack. The only valid registers at this
level will be the return address and the CFA. */
-#define uw_init_context(CONTEXT) \
- do \
- { \
- /* Do any necessary initialization to access arbitrary stack frames. \
- On the SPARC, this means flushing the register windows. */ \
- __builtin_unwind_init (); \
- uw_init_context_1 (CONTEXT, __builtin_dwarf_cfa (), \
- __builtin_return_address (0)); \
- } \
- while (0)
+#define uw_init_context(CONTEXT) \
+ /* Do any necessary initialization to access arbitrary stack frames. \
+ On the SPARC, this means flushing the register windows. */ \
+ (__builtin_unwind_init (), \
+ uw_init_context_1 ((CONTEXT), __builtin_dwarf_cfa (), \
+ __builtin_return_address (0)))
static inline void
init_dwarf_reg_size_table (void)
@@ -1431,7 +1427,7 @@
__builtin_init_dwarf_reg_size_table (dwarf_reg_size_table);
}
-static void __attribute__((noinline))
+static _Unwind_Reason_Code __attribute__((noinline))
uw_init_context_1 (struct _Unwind_Context *context,
void *outer_cfa, void *outer_ra)
{
@@ -1445,7 +1441,8 @@
context->flags = EXTENDED_CONTEXT_BIT;
code = uw_frame_state_for (context, &fs);
- gcc_assert (code == _URC_NO_REASON);
+ if (code != _URC_NO_REASON)
+ return code;
#if __GTHREADS
{
@@ -1471,6 +1468,8 @@
initialization context, then we can't see it in the given
call frame data. So have the initialization context tell us. */
context->ra = __builtin_extract_return_addr (outer_ra);
+
+ return _URC_NO_REASON;
}
static void _Unwind_DebugHook (void *, void *)
=== modified file 'gcc/unwind-sjlj.c'
--- old/gcc/unwind-sjlj.c 2009-04-09 14:00:19 +0000
+++ new/gcc/unwind-sjlj.c 2010-08-26 15:38:19 +0000
@@ -292,10 +292,11 @@
uw_update_context (context, fs);
}
-static inline void
+static inline _Unwind_Reason_Code
uw_init_context (struct _Unwind_Context *context)
{
context->fc = _Unwind_SjLj_GetContext ();
+ return _URC_NO_REASON;
}
static void __attribute__((noreturn))
=== modified file 'gcc/unwind.inc'
--- old/gcc/unwind.inc 2009-04-09 14:00:19 +0000
+++ new/gcc/unwind.inc 2010-08-26 15:38:19 +0000
@@ -85,7 +85,8 @@
_Unwind_Reason_Code code;
/* Set up this_context to describe the current stack frame. */
- uw_init_context (&this_context);
+ code = uw_init_context (&this_context);
+ gcc_assert (code == _URC_NO_REASON);
cur_context = this_context;
/* Phase 1: Search. Unwind the stack, calling the personality routine
@@ -198,7 +199,8 @@
struct _Unwind_Context this_context, cur_context;
_Unwind_Reason_Code code;
- uw_init_context (&this_context);
+ code = uw_init_context (&this_context);
+ gcc_assert (code == _URC_NO_REASON);
cur_context = this_context;
exc->private_1 = (_Unwind_Ptr) stop;
@@ -221,7 +223,8 @@
struct _Unwind_Context this_context, cur_context;
_Unwind_Reason_Code code;
- uw_init_context (&this_context);
+ code = uw_init_context (&this_context);
+ gcc_assert (code == _URC_NO_REASON);
cur_context = this_context;
/* Choose between continuing to process _Unwind_RaiseException
@@ -251,7 +254,8 @@
if (exc->private_1 == 0)
return _Unwind_RaiseException (exc);
- uw_init_context (&this_context);
+ code = uw_init_context (&this_context);
+ gcc_assert (code == _URC_NO_REASON);
cur_context = this_context;
code = _Unwind_ForcedUnwind_Phase2 (exc, &cur_context);
@@ -280,7 +284,9 @@
struct _Unwind_Context context;
_Unwind_Reason_Code code;
- uw_init_context (&context);
+ code = uw_init_context (&context);
+ if (code != _URC_NO_REASON)
+ return _URC_FATAL_PHASE1_ERROR;
while (1)
{
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