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

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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: r101389
2005-06-28 22:06:39 +02:00
// -*- C++ -*- Helpers for calling unextected and terminate
// Copyright (C) 2001, 2002, 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.
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: r101389
2005-06-28 22:06:39 +02:00
// 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 <cstdlib>
#include <exception_defines.h>
#include "unwind-cxx.h"
using namespace __cxxabiv1;
#include "unwind-pe.h"
// Helper routine for when the exception handling code needs to call
// terminate.
extern "C" void
__cxa_call_terminate(_Unwind_Exception* ue_header)
{
if (ue_header)
{
// terminate is classed as a catch handler.
__cxa_begin_catch(ue_header);
// Call the terminate handler that was in effect when we threw this
// exception. */
if (__is_gxx_exception_class(ue_header->exception_class))
{
__cxa_exception* xh;
xh = __get_exception_header_from_ue(ue_header);
__terminate(xh->terminateHandler);
}
}
/* Call the global routine if we don't have anything better. */
std::terminate();
}
#ifdef __ARM_EABI_UNWINDER__
// The ARM EABI __cxa_call_unexpected has the same semantics as the generic
// routine, but the exception specification has a different format.
extern "C" void
__cxa_call_unexpected(void* exc_obj_in)
{
_Unwind_Exception* exc_obj
= reinterpret_cast<_Unwind_Exception*>(exc_obj_in);
int rtti_count = 0;
_Unwind_Word rtti_stride = 0;
_Unwind_Word* rtti_list = NULL;
bool foreign_exception;
std::unexpected_handler unexpectedHandler = NULL;
std::terminate_handler terminateHandler = NULL;
__cxa_exception* xh;
if (__is_gxx_exception_class(exc_obj->exception_class))
{
// Save data from the EO, which may be clobbered by _cxa_begin_catch.
xh = __get_exception_header_from_ue(exc_obj);
unexpectedHandler = xh->unexpectedHandler;
terminateHandler = xh->terminateHandler;
rtti_count = exc_obj->barrier_cache.bitpattern[1];
rtti_stride = exc_obj->barrier_cache.bitpattern[3];
rtti_list = (_Unwind_Word*) exc_obj->barrier_cache.bitpattern[4];
foreign_exception = false;
}
else
foreign_exception = true;
/* This must be called after extracting data from the EO, but before
calling unexpected(). */
__cxa_begin_catch(exc_obj);
// This function is a handler for our exception argument. If we exit
// by throwing a different exception, we'll need the original cleaned up.
struct end_catch_protect
{
end_catch_protect() { }
~end_catch_protect() { __cxa_end_catch(); }
} end_catch_protect_obj;
try
{
if (foreign_exception)
std::unexpected();
else
__unexpected(unexpectedHandler);
}
catch(...)
{
/* See if the new exception matches the rtti list. */
if (foreign_exception)
std::terminate();
// Get the exception thrown from unexpected.
__cxa_eh_globals* globals = __cxa_get_globals_fast();
__cxa_exception* new_xh = globals->caughtExceptions;
void* new_ptr = new_xh + 1;
const std::type_info* catch_type;
int n;
bool bad_exception_allowed = false;
const std::type_info& bad_exc = typeid(std::bad_exception);
// Check the new exception against the rtti list
for (n = 0; n < rtti_count; n++)
{
_Unwind_Word offset;
offset = (_Unwind_Word) &rtti_list[n * (rtti_stride >> 2)];
offset = _Unwind_decode_target2(offset);
catch_type = (const std::type_info*) (offset);
if (__cxa_type_match(&new_xh->unwindHeader, catch_type, false,
&new_ptr) != ctm_failed)
__throw_exception_again;
if (catch_type->__do_catch(&bad_exc, 0, 1))
bad_exception_allowed = true;
}
// If the exception spec allows std::bad_exception, throw that.
#ifdef __EXCEPTIONS
if (bad_exception_allowed)
throw std::bad_exception();
#endif
// Otherwise, die.
__terminate(terminateHandler);
}
}
#endif // __ARM_EABI_UNWINDER__