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tm.texi (LIBGCC2_UNWIND_ATTRIBUTE): Document.

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2007-09-14  Sandra Loosemore  <sandra@codesourcery.com>
	    Nigel Stephens  <nigel@mips.com>

	gcc/
	* doc/tm.texi (LIBGCC2_UNWIND_ATTRIBUTE): Document.
	* unwind-generic.h (LIBGCC2_UNWIND_ATTRIBUTE): Define.
	(_Unwind_RaiseException): Add LIBGCC2_UNWIND_ATTRIBUTE to
	declaration.
	(_Unwind_ForcedUnwind): Likewise.
	(_Unwind_Resume): Likewise.
	(_Unwind_Resume_or_Rethrow): Likewise.
	(_Unwind_Backtrace): Likewise.
	(_Unwind_SjLj_RaiseException): Likewise.
	(_Unwind_SjLj_ForcedUnwind): Likewise.
	(_Unwind_SjLj_Resume): Likewise.
	(_Unwind_SjLj_Resume_or_Rethrow): Likewise.
	* unwind.inc (_Unwind_RaiseException): Add LIBGCC2_UNWIND_ATTRIBUTE
	to definition.
	(_Unwind_ForcedUnwind): Likewise.
	(_Unwind_Resume): Likewise.
	(_Unwind_Resume_or_Rethrow): Likewise.
	(_Unwind_Backtrace): Likewise.
	* unwind-compat.c (_Unwind_Backtrace): Likewise.
	(_Unwind_ForcedUnwind): Likewise.
	(_Unwind_RaiseException): Likewise.
	(_Unwind_Resume): Likewise.
	(_Unwind_Resume_or_Rethrow): Likewise.

	* config/mips/mips.h (LIBGCC2_UNWIND_ATTRIBUTE): Define to force
	nomips16 mode when IN_LIBGCC2 with hard float.

Co-Authored-By: Nigel Stephens <nigel@mips.com>

From-SVN: r128501
This commit is contained in:
Sandra Loosemore 2007-09-14 14:35:12 -04:00 committed by Sandra Loosemore
parent c417817a85
commit 56e449d39a
6 changed files with 82 additions and 23 deletions
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30
gcc/ChangeLog
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@ -1,3 +1,33 @@
2007-09-14 Sandra Loosemore <sandra@codesourcery.com>
Nigel Stephens <nigel@mips.com>
* doc/tm.texi (LIBGCC2_UNWIND_ATTRIBUTE): Document.
* unwind-generic.h (LIBGCC2_UNWIND_ATTRIBUTE): Define.
(_Unwind_RaiseException): Add LIBGCC2_UNWIND_ATTRIBUTE to
declaration.
(_Unwind_ForcedUnwind): Likewise.
(_Unwind_Resume): Likewise.
(_Unwind_Resume_or_Rethrow): Likewise.
(_Unwind_Backtrace): Likewise.
(_Unwind_SjLj_RaiseException): Likewise.
(_Unwind_SjLj_ForcedUnwind): Likewise.
(_Unwind_SjLj_Resume): Likewise.
(_Unwind_SjLj_Resume_or_Rethrow): Likewise.
* unwind.inc (_Unwind_RaiseException): Add LIBGCC2_UNWIND_ATTRIBUTE
to definition.
(_Unwind_ForcedUnwind): Likewise.
(_Unwind_Resume): Likewise.
(_Unwind_Resume_or_Rethrow): Likewise.
(_Unwind_Backtrace): Likewise.
* unwind-compat.c (_Unwind_Backtrace): Likewise.
(_Unwind_ForcedUnwind): Likewise.
(_Unwind_RaiseException): Likewise.
(_Unwind_Resume): Likewise.
(_Unwind_Resume_or_Rethrow): Likewise.
* config/mips/mips.h (LIBGCC2_UNWIND_ATTRIBUTE): Define to force
nomips16 mode when IN_LIBGCC2 with hard float.
2007-09-14 Richard Sandiford <rsandifo@nildram.co.uk>
* config/mips/sdemtk.opt: Update to GPLv3.

11
gcc/config/mips/mips.h
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@ -582,6 +582,17 @@ extern enum mips_llsc_setting mips_llsc;
#endif
#endif /* IN_LIBGCC2 */
/* Force the call stack unwinders in unwind.inc not to be MIPS16 code
when compiled with hardware floating point. This is because MIPS16
code cannot save and restore the floating-point registers, which is
important if in a mixed MIPS16/non-MIPS16 environment. */
#ifdef IN_LIBGCC2
#if __mips_hard_float
#define LIBGCC2_UNWIND_ATTRIBUTE __attribute__((__nomips16__))
#endif
#endif /* IN_LIBGCC2 */
#define TARGET_LIBGCC_SDATA_SECTION ".sdata"
#ifndef MULTILIB_ENDIAN_DEFAULT

7
gcc/doc/tm.texi
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@ -10336,3 +10336,10 @@ SUPPORTS_WEAK and TARGET_HAVE_NAMED_SECTIONS are true, else 0.
This macro determines the size of the objective C jump buffer for the
NeXT runtime. By default, OBJC_JBLEN is defined to an innocuous value.
@end defmac
@defmac LIBGCC2_UNWIND_ATTRIBUTE
Define this macro if any target-specific attributes need to be attached
to the functions in @file{libgcc} that provide low-level support for
call stack unwinding. It is used in declarations in @file{unwind-generic.h}
and the associated definitions of those functions.
@end defmac

10
gcc/unwind-compat.c
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@ -38,7 +38,7 @@
extern _Unwind_Reason_Code __libunwind_Unwind_Backtrace
(_Unwind_Trace_Fn, void *);
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_Backtrace (_Unwind_Trace_Fn trace, void *trace_argument)
{
return __libunwind_Unwind_Backtrace (trace, trace_argument);
@ -67,7 +67,7 @@ symver (_Unwind_FindEnclosingFunction, GCC_3.3);
extern _Unwind_Reason_Code __libunwind_Unwind_ForcedUnwind
(struct _Unwind_Exception *, _Unwind_Stop_Fn, void *);
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_ForcedUnwind (struct _Unwind_Exception *exc,
_Unwind_Stop_Fn stop, void * stop_argument)
{
@ -166,7 +166,7 @@ symver (_Unwind_GetRegionStart, GCC_3.0);
extern _Unwind_Reason_Code __libunwind_Unwind_RaiseException
(struct _Unwind_Exception *);
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_RaiseException(struct _Unwind_Exception *exc)
{
return __libunwind_Unwind_RaiseException (exc);
@ -175,7 +175,7 @@ symver (_Unwind_RaiseException, GCC_3.0);
extern void __libunwind_Unwind_Resume (struct _Unwind_Exception *);
void
void LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_Resume (struct _Unwind_Exception *exc)
{
__libunwind_Unwind_Resume (exc);
@ -185,7 +185,7 @@ symver (_Unwind_Resume, GCC_3.0);
extern _Unwind_Reason_Code __libunwind_Unwind_Resume_or_Rethrow
(struct _Unwind_Exception *);
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *exc)
{
return __libunwind_Unwind_Resume_or_Rethrow (exc);

37
gcc/unwind-generic.h
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@ -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
@ -191,12 +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

10
gcc/unwind.inc
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@ -82,7 +82,7 @@ _Unwind_RaiseException_Phase2(struct _Unwind_Exception *exc,
/* Raise an exception, passing along the given exception object. */
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_RaiseException(struct _Unwind_Exception *exc)
{
struct _Unwind_Context this_context, cur_context;
@ -195,7 +195,7 @@ _Unwind_ForcedUnwind_Phase2 (struct _Unwind_Exception *exc,
/* Raise an exception for forced unwinding. */
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_ForcedUnwind (struct _Unwind_Exception *exc,
_Unwind_Stop_Fn stop, void * stop_argument)
{
@ -219,7 +219,7 @@ _Unwind_ForcedUnwind (struct _Unwind_Exception *exc,
/* Resume propagation of an existing exception. This is used after
e.g. executing cleanup code, and not to implement rethrowing. */
void
void LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_Resume (struct _Unwind_Exception *exc)
{
struct _Unwind_Context this_context, cur_context;
@ -244,7 +244,7 @@ _Unwind_Resume (struct _Unwind_Exception *exc)
/* Resume propagation of an FORCE_UNWIND exception, or to rethrow
a normal exception that was handled. */
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_Resume_or_Rethrow (struct _Unwind_Exception *exc)
{
struct _Unwind_Context this_context, cur_context;
@ -278,7 +278,7 @@ _Unwind_DeleteException (struct _Unwind_Exception *exc)
/* Perform stack backtrace through unwind data. */
_Unwind_Reason_Code
_Unwind_Reason_Code LIBGCC2_UNWIND_ATTRIBUTE
_Unwind_Backtrace(_Unwind_Trace_Fn trace, void * trace_argument)
{
struct _Unwind_Context context;