gcc/libstdc++-v3/libsupc++/eh_throw.cc

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// -*- C++ -*- Exception handling routines for throwing.
// Copyright (C) 2001, 2003 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)
// any later version.
//
// 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, 51 Franklin Street, Fifth Floor,
// Boston, MA 02110-1301, USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <bits/c++config.h>
#include "unwind-cxx.h"
using namespace __cxxabiv1;
static void
__gxx_exception_cleanup (_Unwind_Reason_Code code, _Unwind_Exception *exc)
{
__cxa_exception *header = __get_exception_header_from_ue (exc);
// If we haven't been caught by a foreign handler, then this is
// some sort of unwind error. In that case just die immediately.
// _Unwind_DeleteException in the HP-UX IA64 libunwind library
// returns _URC_NO_REASON and not _URC_FOREIGN_EXCEPTION_CAUGHT
// like the GCC _Unwind_DeleteException function does.
if (code != _URC_FOREIGN_EXCEPTION_CAUGHT && code != _URC_NO_REASON)
__terminate (header->terminateHandler);
if (header->exceptionDestructor)
header->exceptionDestructor (header + 1);
__cxa_free_exception (header + 1);
}
extern "C" void
__cxxabiv1::__cxa_throw (void *obj, std::type_info *tinfo,
void (*dest) (void *))
{
__cxa_exception *header = __get_exception_header_from_obj (obj);
header->exceptionType = tinfo;
header->exceptionDestructor = dest;
header->unexpectedHandler = __unexpected_handler;
header->terminateHandler = __terminate_handler;
Makefile.in: Set and use UNWIND_H. 2005-06-28 Paul Brook <paul@codesourcery.com> gcc/ * Makefile.in: Set and use UNWIND_H. Install as unwind.h. * c-decl.c (finish_decl): Call default_init_unwind_resume_libfunc. * except.c (add_ehspec_entry): Generate arm eabi filter lists. (assign_filter_values): Ditto. (output_ttype): New function. (output_function_exception_table): Use output_ttype. Generate arm eabi filter lists. (default_init_unwind_resume_libfunc): New function. * except.h (default_init_unwind_resume_libfunc): Add prototype. * optabs.c (init_optabs): Don't set unwind_resume_libfunc. * opts.c (decode_options): Use targetm.unwind_tables_default. * target-def.h (TARGET_ASM_TTYPE): Provide and use definition. (TARGET_ARM_EABI_UNWINDER, TARGET_UNWIND_TABLES_DEFAULT): Ditto. * target.h (struct gcc_target): Add asm.ttype, unwind_tables_default and arm_eabi_unwinder. * unwind-c.c: Support Arm EABI unwinder. * unwind.h: Rename ... * unwind-generic.h: ... To this. * doc/tm.texi (TARGET_ASM_TTYPE, TARGET_ARM_EABI_UNWINDER): Document. (TARGET_UNWID_TABLES_DEFAULT): Document. * config/arm/arm-protos.h (arm_output_fn_unwind): Add prototype. * config/arm/arm.c (arm_unwind_emit, arm_output_ttype): New functions. (TARGET_UNWIND_EMIT, TARGET_ASM_TTYPE, TARGET_ARM_EABI_UNWINDER): Define. (thumb_pushpop, thumb_output_function_prologue): Output unwinding directives. (arm_unwind_emit_stm, arm_unwind_emit_set): New functions. * config/arm/arm.h (MUST_USE_SJLJ_EXCEPTIONS): Only define when !TARGET_UNWIND_INFO. (ARM_OUTPUT_FN_UNWIND, ARM_EABI_UNWIND_TABLES): Define. * config/arm/bpabi.h (TARGET_UNWIND_INFO): Define. * config/arm/elf.h (ASM_DECLARE_FUNCTION_NAME, ASM_DECLARE_FUNCTION_SIZE): Use ARM_OUTPUT_FN_UNWIND. * config/arm/lib1funcs.asm: Include libunwind.S. * config/arm/libgcc-bpabi.ver: Add unwinding routines. * config/arm/libunwind.S: New file. * config/arm/pr-support.c: New file. * config/arm/t-bpabi (LIB1ASMFUNCS): Add _unwind. (UNWIND_H, LIB2ADDEH, LIB2ADDEHDEP): Set. * config/arm/t-symbian (UNWIND_H, LIB2ADDEH, LIB2ADDEHDEP): Set. * config/arm/unwind-arm.c: New file. * config/arm/unwind-arm.h: New file. * config/i386/t-netware (USER_H): Remove unwind.h. * config/ia64/ia64.h (TARGET_UNWIND_TABLES_DEFAULT): Define. gcc/cp/ * Make-lang.in (cp/except.o): Depend on $(TARGET_H) * except.c: Include target.h. (init_exception_processing): Initialize unwind_resume_libfunc. * doc/tm.texi: Document TARGET_ASM_TTYPE gcc/ada/ * misc.c (gnat_init_gcc_eh): Call default_init_unwind_resume_libfunc. gcc/java/ * decl.c (java_init_decl_processing): Call default_init_unwind_resume_libfunc. gcc/objc/ * objc-act.c (objc_init_exceptions): Call default_init_unwind_resume_libfunc. libstdc++/ * acinclude.m4 (GLIBCXX_ENABLE_SJLJ_EXCEPTIONS): Check for __cxa_end_cleanup. * libsupc++/Makefile.am (sources): Add eh_call.c and eh_arm.c. * libsupc++/eh_arm.cc: New file. * libsupc++/eh_call.cc: New file. * libsupc++/eh_catch.cc (__cxa_get_exception_ptr): Use __gxx_caught_object. (__cxa_begin_catch): Ditto. Use __is_gxx_exception_class. Call _Unwind_Complete when using the ARM EABI. (__cxa_end_catch): Use __is_gxx_exception_class. * libsupc++/eh_personality.cc: Define NO_SIZE_OF_ENCODED_VALUE when using the ARM EABI. (save_caught_exception, restore_caught_exception): New functions. (_throw_typet): New typedef. (get_ttype_entry, get_adjusted_ptr, check_exception_spec): Add ARM EABI implementations. (PERSONALITY_FUNCTION): Use new functions. Addd support for ARM EABI unwinding libary. (__cxa_unexpected): Disable when using the ARM EABI. * libsupc++/eh_throw.cc (__cxa_throw): Use __GXX_INIT_EXCEPTION_CLASS. (__cxa_rethrow): Use __is_gxx_exception_class. Call _Unwind_RaiseException when using the ARM EABI. * libsupc++/unwind-cxx.h (struct __cxa_exception): Add fields for ARM EABI semantics. (struct __cxa_eh_globals): Ditto. (__cxa_call_terminate): Add prototype. (__cxa_type_match, __cxa_begin_cleanup, __cxa_end_cleanup): Add prototypes. (__get_exception_header_from_obj, __get_exception_header_from_ue): Move earlier in file. (__is_gxx_exception_class, __GXX_INIT_EXCEPTION_CLASS, __gxx_caught_object): New functions. * aclocal.m4: Regenerate. * configure: Regenerate. * Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libmath/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * src/Makefie.in: Regenerate. * testsuite/makefile.in: Regenerate. From-SVN: r101385
2005-06-28 21:52:27 +02:00
__GXX_INIT_EXCEPTION_CLASS(header->unwindHeader.exception_class);
header->unwindHeader.exception_cleanup = __gxx_exception_cleanup;
#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
_Unwind_SjLj_RaiseException (&header->unwindHeader);
#else
_Unwind_RaiseException (&header->unwindHeader);
#endif
// Some sort of unwinding error. Note that terminate is a handler.
__cxa_begin_catch (&header->unwindHeader);
std::terminate ();
}
extern "C" void
__cxxabiv1::__cxa_rethrow ()
{
__cxa_eh_globals *globals = __cxa_get_globals ();
__cxa_exception *header = globals->caughtExceptions;
globals->uncaughtExceptions += 1;
// Watch for luser rethrowing with no active exception.
if (header)
{
// Tell __cxa_end_catch this is a rethrow.
Makefile.in: Set and use UNWIND_H. 2005-06-28 Paul Brook <paul@codesourcery.com> gcc/ * Makefile.in: Set and use UNWIND_H. Install as unwind.h. * c-decl.c (finish_decl): Call default_init_unwind_resume_libfunc. * except.c (add_ehspec_entry): Generate arm eabi filter lists. (assign_filter_values): Ditto. (output_ttype): New function. (output_function_exception_table): Use output_ttype. Generate arm eabi filter lists. (default_init_unwind_resume_libfunc): New function. * except.h (default_init_unwind_resume_libfunc): Add prototype. * optabs.c (init_optabs): Don't set unwind_resume_libfunc. * opts.c (decode_options): Use targetm.unwind_tables_default. * target-def.h (TARGET_ASM_TTYPE): Provide and use definition. (TARGET_ARM_EABI_UNWINDER, TARGET_UNWIND_TABLES_DEFAULT): Ditto. * target.h (struct gcc_target): Add asm.ttype, unwind_tables_default and arm_eabi_unwinder. * unwind-c.c: Support Arm EABI unwinder. * unwind.h: Rename ... * unwind-generic.h: ... To this. * doc/tm.texi (TARGET_ASM_TTYPE, TARGET_ARM_EABI_UNWINDER): Document. (TARGET_UNWID_TABLES_DEFAULT): Document. * config/arm/arm-protos.h (arm_output_fn_unwind): Add prototype. * config/arm/arm.c (arm_unwind_emit, arm_output_ttype): New functions. (TARGET_UNWIND_EMIT, TARGET_ASM_TTYPE, TARGET_ARM_EABI_UNWINDER): Define. (thumb_pushpop, thumb_output_function_prologue): Output unwinding directives. (arm_unwind_emit_stm, arm_unwind_emit_set): New functions. * config/arm/arm.h (MUST_USE_SJLJ_EXCEPTIONS): Only define when !TARGET_UNWIND_INFO. (ARM_OUTPUT_FN_UNWIND, ARM_EABI_UNWIND_TABLES): Define. * config/arm/bpabi.h (TARGET_UNWIND_INFO): Define. * config/arm/elf.h (ASM_DECLARE_FUNCTION_NAME, ASM_DECLARE_FUNCTION_SIZE): Use ARM_OUTPUT_FN_UNWIND. * config/arm/lib1funcs.asm: Include libunwind.S. * config/arm/libgcc-bpabi.ver: Add unwinding routines. * config/arm/libunwind.S: New file. * config/arm/pr-support.c: New file. * config/arm/t-bpabi (LIB1ASMFUNCS): Add _unwind. (UNWIND_H, LIB2ADDEH, LIB2ADDEHDEP): Set. * config/arm/t-symbian (UNWIND_H, LIB2ADDEH, LIB2ADDEHDEP): Set. * config/arm/unwind-arm.c: New file. * config/arm/unwind-arm.h: New file. * config/i386/t-netware (USER_H): Remove unwind.h. * config/ia64/ia64.h (TARGET_UNWIND_TABLES_DEFAULT): Define. gcc/cp/ * Make-lang.in (cp/except.o): Depend on $(TARGET_H) * except.c: Include target.h. (init_exception_processing): Initialize unwind_resume_libfunc. * doc/tm.texi: Document TARGET_ASM_TTYPE gcc/ada/ * misc.c (gnat_init_gcc_eh): Call default_init_unwind_resume_libfunc. gcc/java/ * decl.c (java_init_decl_processing): Call default_init_unwind_resume_libfunc. gcc/objc/ * objc-act.c (objc_init_exceptions): Call default_init_unwind_resume_libfunc. libstdc++/ * acinclude.m4 (GLIBCXX_ENABLE_SJLJ_EXCEPTIONS): Check for __cxa_end_cleanup. * libsupc++/Makefile.am (sources): Add eh_call.c and eh_arm.c. * libsupc++/eh_arm.cc: New file. * libsupc++/eh_call.cc: New file. * libsupc++/eh_catch.cc (__cxa_get_exception_ptr): Use __gxx_caught_object. (__cxa_begin_catch): Ditto. Use __is_gxx_exception_class. Call _Unwind_Complete when using the ARM EABI. (__cxa_end_catch): Use __is_gxx_exception_class. * libsupc++/eh_personality.cc: Define NO_SIZE_OF_ENCODED_VALUE when using the ARM EABI. (save_caught_exception, restore_caught_exception): New functions. (_throw_typet): New typedef. (get_ttype_entry, get_adjusted_ptr, check_exception_spec): Add ARM EABI implementations. (PERSONALITY_FUNCTION): Use new functions. Addd support for ARM EABI unwinding libary. (__cxa_unexpected): Disable when using the ARM EABI. * libsupc++/eh_throw.cc (__cxa_throw): Use __GXX_INIT_EXCEPTION_CLASS. (__cxa_rethrow): Use __is_gxx_exception_class. Call _Unwind_RaiseException when using the ARM EABI. * libsupc++/unwind-cxx.h (struct __cxa_exception): Add fields for ARM EABI semantics. (struct __cxa_eh_globals): Ditto. (__cxa_call_terminate): Add prototype. (__cxa_type_match, __cxa_begin_cleanup, __cxa_end_cleanup): Add prototypes. (__get_exception_header_from_obj, __get_exception_header_from_ue): Move earlier in file. (__is_gxx_exception_class, __GXX_INIT_EXCEPTION_CLASS, __gxx_caught_object): New functions. * aclocal.m4: Regenerate. * configure: Regenerate. * Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libmath/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * src/Makefie.in: Regenerate. * testsuite/makefile.in: Regenerate. From-SVN: r101385
2005-06-28 21:52:27 +02:00
if (!__is_gxx_exception_class(header->unwindHeader.exception_class))
globals->caughtExceptions = 0;
else
header->handlerCount = -header->handlerCount;
#ifdef _GLIBCXX_SJLJ_EXCEPTIONS
_Unwind_SjLj_Resume_or_Rethrow (&header->unwindHeader);
#else
unwind-arm.h: Reorder interface function declarations. 2005-11-16 Nathan Sidwell <nathan@codesourcery.com> gcc/ * config/arm/unwind-arm.h: Reorder interface function declarations. (_URC_END_OF_STACK): New enumeration value. (_US_UNWIND_ACTION_MASK, _US_FORCE_UNWIND, _US_END_OF_STACK): Likewise. (struct _Unwind_Control_Block): Document reserved field use. (_Unwind_Stop_Fn): New typedef. (_Unwind_ForcedUnwind): Declare. (_Unwind_Resume_or_Rethrow): Declare. * config/arm/libunwind.S (UNWIND_WRAPER): Add nargs argument. Adjust. (_Unwind_Resume_or_Rethrow, _Unwind_ForcedUnwind): New. * config/arm/unwind-arm.c (UCB_FORCED_STOP_FN) (UCB_FORCED_STOP_ARG): New. (search_EIT_table): Update boundary condition checks. (get_eit_entry): Return _URC_END_OF_STACK when cannot unwind. (unwind_phase2): Replace for with do..while. (unwind_phase2_forced): New. (__gnu_Unwind_RaiseException): Replace for with do..while. (__gnu_Unwind_ForcedUnwind): New. (__gnu_Unwind_Resume): Set FORCE_UNWIND flag, if forced unwinding. Use appropriate phase2 unwinder. (__gnu_Unwind_Resume_or_Rethrow): New. (__gnu_unwind_pr_common): Cope with forced unwinding. gcc/testsuite/ * g++.dg/eh/forced1.C: Adjust to cope with ARM EABI structures. * g++.dg/eh/forced2.C: Likewise. * g++.dg/eh/forced3.C: Likewise. * g++.dg/eh/forced4.C: Likewise. libstdc++-v3/ * libsupc++/eh_arm.cc (__cxa_begin_cleanup): Remember a foreign exception too. (__gnu_end_cleanup): Recover a foreign exception too. * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Cope with forced unwinding. * libsupc++/eh_throw.cc (__cxxabiv1::__cxa_rethrow): Use _Unwind_Resume_or_Rethrow for ARM EABI. From-SVN: r107089
2005-11-16 18:04:41 +01:00
#if defined(_LIBUNWIND_STD_ABI)
_Unwind_RaiseException (&header->unwindHeader);
#else
_Unwind_Resume_or_Rethrow (&header->unwindHeader);
#endif
#endif
// Some sort of unwinding error. Note that terminate is a handler.
__cxa_begin_catch (&header->unwindHeader);
}
std::terminate ();
}