mirror of
git://source.winehq.org/git/wine.git
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1074 lines
33 KiB
C
1074 lines
33 KiB
C
/*
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* msvcrt.dll exception handling
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*
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* Copyright 2000 Jon Griffiths
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* Copyright 2005 Juan Lang
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* FIXME: Incomplete support for nested exceptions/try block cleanup.
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*/
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#include <float.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winbase.h"
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#include "winternl.h"
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#include "msvcrt.h"
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#include "excpt.h"
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#include "wincon.h"
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#include "wine/exception.h"
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#include "wine/debug.h"
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#include "cppexcept.h"
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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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#if _MSVCR_VER>=70 && _MSVCR_VER<=71
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static MSVCRT_security_error_handler security_error_handler;
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#endif
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static __sighandler_t sighandlers[NSIG] = { SIG_DFL };
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void dump_function_descr( const cxx_function_descr *descr, uintptr_t base )
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{
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unwind_info *unwind_table = rtti_rva( descr->unwind_table, base );
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tryblock_info *tryblock = rtti_rva( descr->tryblock, base );
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ipmap_info *ipmap = rtti_rva( descr->ipmap, base );
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UINT i, j;
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TRACE( "magic %x\n", descr->magic );
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TRACE( "unwind table: %p %d\n", unwind_table, descr->unwind_count );
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for (i = 0; i < descr->unwind_count; i++)
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{
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TRACE(" %d: prev %d func %p\n", i, unwind_table[i].prev,
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unwind_table[i].handler ? rtti_rva( unwind_table[i].handler, base ) : NULL );
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}
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TRACE( "try table: %p %d\n", tryblock, descr->tryblock_count );
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for (i = 0; i < descr->tryblock_count; i++)
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{
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catchblock_info *catchblock = rtti_rva( tryblock[i].catchblock, base );
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TRACE( " %d: start %d end %d catchlevel %d catch %p %d\n", i,
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tryblock[i].start_level, tryblock[i].end_level,
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tryblock[i].catch_level, catchblock, tryblock[i].catchblock_count);
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for (j = 0; j < tryblock[i].catchblock_count; j++)
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{
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type_info *type_info = catchblock[j].type_info ? rtti_rva( catchblock[j].type_info, base ) : NULL;
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TRACE( " %d: flags %x offset %d handler %p",
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j, catchblock[j].flags, catchblock[j].offset,
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catchblock[j].handler ? rtti_rva(catchblock[j].handler, base) : NULL );
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#ifdef _WIN64
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TRACE( " frame %x", catchblock[j].frame );
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#endif
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TRACE( " type %p %s\n", type_info, dbgstr_type_info(type_info) );
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}
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}
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TRACE( "ipmap: %p %d\n", ipmap, descr->ipmap_count );
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for (i = 0; i < descr->ipmap_count; i++)
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TRACE( " %d: ip %x state %d\n", i, ipmap[i].ip, ipmap[i].state );
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#ifdef RTTI_USE_RVA
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TRACE( "unwind_help %+d\n", descr->unwind_help );
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#endif
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if (descr->magic <= CXX_FRAME_MAGIC_VC6) return;
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TRACE( "expect list: %p\n", rtti_rva( descr->expect_list, base ) );
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if (descr->magic <= CXX_FRAME_MAGIC_VC7) return;
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TRACE( "flags: %08x\n", descr->flags );
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}
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void *find_catch_handler( void *object, uintptr_t frame, uintptr_t exc_base,
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const tryblock_info *tryblock,
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cxx_exception_type *exc_type, uintptr_t image_base )
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{
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unsigned int i;
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const catchblock_info *catchblock = rtti_rva( tryblock->catchblock, image_base );
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const cxx_type_info *type;
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const type_info *catch_ti;
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for (i = 0; i < tryblock->catchblock_count; i++)
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{
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if (exc_type)
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{
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catch_ti = catchblock[i].type_info ? rtti_rva( catchblock[i].type_info, image_base ) : NULL;
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type = find_caught_type( exc_type, exc_base, catch_ti, catchblock[i].flags );
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if (!type) continue;
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TRACE( "matched type %p in catchblock %d\n", type, i );
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if (catch_ti && catch_ti->mangled[0] && catchblock[i].offset)
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{
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/* copy the exception to its destination on the stack */
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void **dest = (void **)(frame + catchblock[i].offset);
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copy_exception( object, dest, catchblock[i].flags, type, exc_base );
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}
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}
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else
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{
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/* no CXX_EXCEPTION only proceed with a catch(...) block*/
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if (catchblock[i].type_info) continue;
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TRACE( "found catch(...) block\n" );
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}
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return rtti_rva( catchblock[i].handler, image_base );
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}
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return NULL;
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}
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#ifndef __i386__ /* i386 implementation is in except_i386.c */
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typedef struct
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{
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cxx_frame_info frame_info;
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BOOL rethrow;
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EXCEPTION_RECORD *prev_rec;
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} cxx_catch_ctx;
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typedef struct
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{
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ULONG_PTR dest_frame;
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ULONG_PTR orig_frame;
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EXCEPTION_RECORD *seh_rec;
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DISPATCHER_CONTEXT *dispatch;
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const cxx_function_descr *descr;
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} se_translator_ctx;
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static inline int ip_to_state( const cxx_function_descr *descr, uintptr_t ip, uintptr_t base )
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{
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const ipmap_info *ipmap = rtti_rva( descr->ipmap, base );
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unsigned int i;
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int ret;
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for (i = 0; i < descr->ipmap_count; i++) if (base + ipmap[i].ip > ip) break;
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ret = i ? ipmap[i - 1].state : -1;
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TRACE( "%Ix -> %d\n", ip, ret );
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return ret;
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}
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static void cxx_local_unwind(ULONG_PTR frame, DISPATCHER_CONTEXT *dispatch,
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const cxx_function_descr *descr, int last_level)
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{
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const unwind_info *unwind_table = rtti_rva(descr->unwind_table, dispatch->ImageBase);
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int *unwind_help = (int *)(frame + descr->unwind_help);
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int trylevel = unwind_help[0];
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if (trylevel == -2) trylevel = ip_to_state( descr, get_exception_pc(dispatch), dispatch->ImageBase );
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TRACE("current level: %d, last level: %d\n", trylevel, last_level);
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while (trylevel > last_level)
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{
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if (trylevel<0 || trylevel>=descr->unwind_count)
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{
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ERR("invalid trylevel %d\n", trylevel);
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terminate();
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}
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if (unwind_table[trylevel].handler)
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{
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void *handler = rtti_rva( unwind_table[trylevel].handler, dispatch->ImageBase );
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call_unwind_handler( handler, frame, dispatch );
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}
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trylevel = unwind_table[trylevel].prev;
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}
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unwind_help[0] = trylevel;
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}
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static LONG CALLBACK cxx_rethrow_filter(PEXCEPTION_POINTERS eptrs, void *c)
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{
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EXCEPTION_RECORD *rec = eptrs->ExceptionRecord;
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cxx_catch_ctx *ctx = c;
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if (rec->ExceptionCode != CXX_EXCEPTION)
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return EXCEPTION_CONTINUE_SEARCH;
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if (!rec->ExceptionInformation[1] && !rec->ExceptionInformation[2])
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return EXCEPTION_EXECUTE_HANDLER;
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if (rec->ExceptionInformation[1] == ctx->prev_rec->ExceptionInformation[1])
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ctx->rethrow = TRUE;
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return EXCEPTION_CONTINUE_SEARCH;
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}
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static void CALLBACK cxx_catch_cleanup(BOOL normal, void *c)
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{
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cxx_catch_ctx *ctx = c;
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__CxxUnregisterExceptionObject(&ctx->frame_info, ctx->rethrow);
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}
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static void* WINAPI call_catch_block(EXCEPTION_RECORD *rec)
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{
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ULONG_PTR frame = rec->ExceptionInformation[1];
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const cxx_function_descr *descr = (void*)rec->ExceptionInformation[2];
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EXCEPTION_RECORD *untrans_rec = (void*)rec->ExceptionInformation[4];
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EXCEPTION_RECORD *prev_rec = (void*)rec->ExceptionInformation[6];
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CONTEXT *context = (void*)rec->ExceptionInformation[7];
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int *unwind_help = (int *)(frame + descr->unwind_help);
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EXCEPTION_POINTERS ep = { prev_rec, context };
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cxx_catch_ctx ctx;
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void *ret_addr = NULL;
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ctx.rethrow = FALSE;
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ctx.prev_rec = prev_rec;
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__CxxRegisterExceptionObject(&ep, &ctx.frame_info);
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msvcrt_get_thread_data()->processing_throw--;
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__TRY
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{
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__TRY
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{
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ret_addr = call_catch_handler( rec );
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}
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__EXCEPT_CTX(cxx_rethrow_filter, &ctx)
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{
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TRACE("detect rethrow: exception code: %lx\n", prev_rec->ExceptionCode);
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ctx.rethrow = TRUE;
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if (untrans_rec)
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{
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__DestructExceptionObject(prev_rec);
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RaiseException(untrans_rec->ExceptionCode, untrans_rec->ExceptionFlags,
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untrans_rec->NumberParameters, untrans_rec->ExceptionInformation);
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}
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else
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{
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RaiseException(prev_rec->ExceptionCode, prev_rec->ExceptionFlags,
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prev_rec->NumberParameters, prev_rec->ExceptionInformation);
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}
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}
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__ENDTRY
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}
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__FINALLY_CTX(cxx_catch_cleanup, &ctx)
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unwind_help[0] = -2;
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unwind_help[1] = -1;
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return ret_addr;
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}
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static inline BOOL cxx_is_consolidate(const EXCEPTION_RECORD *rec)
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{
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return (rec->ExceptionCode == STATUS_UNWIND_CONSOLIDATE &&
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rec->NumberParameters > 10 &&
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rec->ExceptionInformation[0] == (ULONG_PTR)call_catch_block);
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}
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static inline void find_catch_block(EXCEPTION_RECORD *rec, CONTEXT *context,
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EXCEPTION_RECORD *untrans_rec,
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ULONG_PTR frame, DISPATCHER_CONTEXT *dispatch,
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const cxx_function_descr *descr,
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cxx_exception_type *info, ULONG_PTR orig_frame)
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{
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ULONG_PTR exc_base = (rec->NumberParameters == 4 ? rec->ExceptionInformation[3] : 0);
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void *handler, *object = (void *)rec->ExceptionInformation[1];
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int trylevel = ip_to_state( descr, get_exception_pc(dispatch), dispatch->ImageBase );
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thread_data_t *data = msvcrt_get_thread_data();
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const tryblock_info *in_catch;
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EXCEPTION_RECORD catch_record;
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CONTEXT ctx;
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UINT i;
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INT *unwind_help;
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data->processing_throw++;
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for (i=descr->tryblock_count; i>0; i--)
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{
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in_catch = rtti_rva(descr->tryblock, dispatch->ImageBase);
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in_catch = &in_catch[i-1];
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if (trylevel>in_catch->end_level && trylevel<=in_catch->catch_level)
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break;
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}
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if (!i)
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in_catch = NULL;
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unwind_help = (int *)(orig_frame + descr->unwind_help);
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if (trylevel > unwind_help[1])
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unwind_help[0] = unwind_help[1] = trylevel;
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else
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trylevel = unwind_help[1];
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TRACE("current trylevel: %d\n", trylevel);
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for (i=0; i<descr->tryblock_count; i++)
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{
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const tryblock_info *tryblock = rtti_rva(descr->tryblock, dispatch->ImageBase);
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tryblock = &tryblock[i];
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if (trylevel < tryblock->start_level) continue;
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if (trylevel > tryblock->end_level) continue;
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if (in_catch)
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{
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if(tryblock->start_level <= in_catch->end_level) continue;
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if(tryblock->end_level > in_catch->catch_level) continue;
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}
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handler = find_catch_handler( object, orig_frame, exc_base, tryblock, info, dispatch->ImageBase );
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if (!handler) continue;
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/* unwind stack and call catch */
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memset(&catch_record, 0, sizeof(catch_record));
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catch_record.ExceptionCode = STATUS_UNWIND_CONSOLIDATE;
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catch_record.ExceptionFlags = EXCEPTION_NONCONTINUABLE;
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catch_record.NumberParameters = 11;
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catch_record.ExceptionInformation[0] = (ULONG_PTR)call_catch_block;
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catch_record.ExceptionInformation[1] = orig_frame;
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catch_record.ExceptionInformation[2] = (ULONG_PTR)descr;
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catch_record.ExceptionInformation[3] = tryblock->start_level;
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catch_record.ExceptionInformation[4] = (ULONG_PTR)untrans_rec;
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catch_record.ExceptionInformation[5] = (ULONG_PTR)handler;
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/* tyFlow expects ExceptionInformation[6] to contain exception record */
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catch_record.ExceptionInformation[6] = (ULONG_PTR)rec;
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catch_record.ExceptionInformation[7] = (ULONG_PTR)context;
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catch_record.ExceptionInformation[10] = -1;
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RtlUnwindEx((void*)frame, (void*)dispatch->ControlPc, &catch_record, NULL, &ctx, NULL);
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}
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TRACE("no matching catch block found\n");
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data->processing_throw--;
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}
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static LONG CALLBACK se_translation_filter(EXCEPTION_POINTERS *ep, void *c)
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{
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se_translator_ctx *ctx = (se_translator_ctx *)c;
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EXCEPTION_RECORD *rec = ep->ExceptionRecord;
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cxx_exception_type *exc_type;
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if (rec->ExceptionCode != CXX_EXCEPTION)
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{
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TRACE("non-c++ exception thrown in SEH handler: %lx\n", rec->ExceptionCode);
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terminate();
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}
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exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
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find_catch_block(rec, ep->ContextRecord, ctx->seh_rec, ctx->dest_frame, ctx->dispatch,
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ctx->descr, exc_type, ctx->orig_frame);
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__DestructExceptionObject(rec);
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return ExceptionContinueSearch;
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}
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static void check_noexcept( PEXCEPTION_RECORD rec,
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const cxx_function_descr *descr, BOOL nested )
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{
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if (!nested && rec->ExceptionCode == CXX_EXCEPTION &&
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descr->magic >= CXX_FRAME_MAGIC_VC8 &&
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(descr->flags & FUNC_DESCR_NOEXCEPT))
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{
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ERR("noexcept function propagating exception\n");
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terminate();
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}
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}
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static DWORD cxx_frame_handler(EXCEPTION_RECORD *rec, ULONG_PTR frame,
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CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
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const cxx_function_descr *descr)
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{
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int trylevel = ip_to_state( descr, get_exception_pc(dispatch), dispatch->ImageBase );
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cxx_exception_type *exc_type;
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ULONG_PTR orig_frame = frame;
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ULONG_PTR throw_base;
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DWORD throw_func_off;
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void *throw_func;
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UINT i, j;
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int unwindlevel = -1;
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if (descr->magic<CXX_FRAME_MAGIC_VC6 || descr->magic>CXX_FRAME_MAGIC_VC8)
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{
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FIXME("unhandled frame magic %x\n", descr->magic);
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return ExceptionContinueSearch;
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}
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if (descr->magic >= CXX_FRAME_MAGIC_VC8 &&
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(descr->flags & FUNC_DESCR_SYNCHRONOUS) &&
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(rec->ExceptionCode != CXX_EXCEPTION &&
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!cxx_is_consolidate(rec) &&
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rec->ExceptionCode != STATUS_LONGJUMP))
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return ExceptionContinueSearch; /* handle only c++ exceptions */
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/* update orig_frame if it's a nested exception */
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throw_func_off = RtlLookupFunctionEntry(dispatch->ControlPc, &throw_base, NULL)->BeginAddress;
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throw_func = rtti_rva(throw_func_off, throw_base);
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TRACE("reconstructed handler pointer: %p\n", throw_func);
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for (i=descr->tryblock_count; i>0; i--)
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{
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const tryblock_info *tryblock = rtti_rva(descr->tryblock, dispatch->ImageBase);
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tryblock = &tryblock[i-1];
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|
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if (trylevel>tryblock->end_level && trylevel<=tryblock->catch_level)
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{
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for (j=0; j<tryblock->catchblock_count; j++)
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{
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const catchblock_info *catchblock = rtti_rva(tryblock->catchblock, dispatch->ImageBase);
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catchblock = &catchblock[j];
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if (rtti_rva(catchblock->handler, dispatch->ImageBase) == throw_func)
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{
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unwindlevel = tryblock->end_level;
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#ifdef _WIN64
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orig_frame = *(ULONG_PTR *)(frame + catchblock->frame);
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#else
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orig_frame = *(ULONG_PTR *)frame;
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#endif
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TRACE("nested exception detected, setting orig_frame to %Ix\n", orig_frame);
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}
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}
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}
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}
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if (rec->ExceptionFlags & (EXCEPTION_UNWINDING|EXCEPTION_EXIT_UNWIND))
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{
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if (rec->ExceptionFlags & EXCEPTION_TARGET_UNWIND)
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cxx_local_unwind(orig_frame, dispatch, descr,
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cxx_is_consolidate(rec) ? rec->ExceptionInformation[3] : trylevel);
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else
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cxx_local_unwind(orig_frame, dispatch, descr, unwindlevel);
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return ExceptionContinueSearch;
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}
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if (!descr->tryblock_count)
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{
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check_noexcept(rec, descr, orig_frame != frame);
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return ExceptionContinueSearch;
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}
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if (rec->ExceptionCode == CXX_EXCEPTION &&
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(!rec->ExceptionInformation[1] && !rec->ExceptionInformation[2]))
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{
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TRACE("rethrow detected.\n");
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*rec = *msvcrt_get_thread_data()->exc_record;
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}
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if (rec->ExceptionCode == CXX_EXCEPTION)
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{
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exc_type = (cxx_exception_type *)rec->ExceptionInformation[2];
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if (TRACE_ON(seh))
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|
{
|
|
TRACE("handling C++ exception rec %p frame %Ix descr %p\n", rec, frame, descr);
|
|
TRACE_EXCEPTION_TYPE(exc_type, rec->ExceptionInformation[3]);
|
|
dump_function_descr(descr, dispatch->ImageBase);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
thread_data_t *data = msvcrt_get_thread_data();
|
|
|
|
exc_type = NULL;
|
|
TRACE("handling C exception code %lx rec %p frame %Ix descr %p\n",
|
|
rec->ExceptionCode, rec, frame, descr);
|
|
|
|
if (data->se_translator) {
|
|
EXCEPTION_POINTERS except_ptrs;
|
|
se_translator_ctx ctx;
|
|
|
|
ctx.dest_frame = frame;
|
|
ctx.orig_frame = orig_frame;
|
|
ctx.seh_rec = rec;
|
|
ctx.dispatch = dispatch;
|
|
ctx.descr = descr;
|
|
__TRY
|
|
{
|
|
except_ptrs.ExceptionRecord = rec;
|
|
except_ptrs.ContextRecord = context;
|
|
data->se_translator(rec->ExceptionCode, &except_ptrs);
|
|
}
|
|
__EXCEPT_CTX(se_translation_filter, &ctx)
|
|
{
|
|
}
|
|
__ENDTRY
|
|
}
|
|
}
|
|
|
|
find_catch_block(rec, context, NULL, frame, dispatch, descr, exc_type, orig_frame);
|
|
check_noexcept(rec, descr, orig_frame != frame);
|
|
return ExceptionContinueSearch;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxFrameHandler (MSVCRT.@)
|
|
*/
|
|
EXCEPTION_DISPOSITION CDECL __CxxFrameHandler( EXCEPTION_RECORD *rec, ULONG_PTR frame,
|
|
CONTEXT *context, DISPATCHER_CONTEXT *dispatch )
|
|
{
|
|
TRACE( "%p %Ix %p %p\n", rec, frame, context, dispatch );
|
|
return cxx_frame_handler( rec, frame, context, dispatch,
|
|
rtti_rva(*(UINT *)dispatch->HandlerData, dispatch->ImageBase) );
|
|
}
|
|
|
|
#endif /* __i386__ */
|
|
|
|
static BOOL WINAPI msvcrt_console_handler(DWORD ctrlType)
|
|
{
|
|
BOOL ret = FALSE;
|
|
|
|
switch (ctrlType)
|
|
{
|
|
case CTRL_C_EVENT:
|
|
if (sighandlers[SIGINT])
|
|
{
|
|
if (sighandlers[SIGINT] != SIG_IGN)
|
|
sighandlers[SIGINT](SIGINT);
|
|
ret = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __pxcptinfoptrs (MSVCRT.@)
|
|
*/
|
|
void** CDECL __pxcptinfoptrs(void)
|
|
{
|
|
return (void**)&msvcrt_get_thread_data()->xcptinfo;
|
|
}
|
|
|
|
typedef void (CDECL *float_handler)(int, int);
|
|
|
|
/* The exception codes are actually NTSTATUS values */
|
|
static const struct
|
|
{
|
|
NTSTATUS status;
|
|
int signal;
|
|
} float_exception_map[] = {
|
|
{ EXCEPTION_FLT_DENORMAL_OPERAND, _FPE_DENORMAL },
|
|
{ EXCEPTION_FLT_DIVIDE_BY_ZERO, _FPE_ZERODIVIDE },
|
|
{ EXCEPTION_FLT_INEXACT_RESULT, _FPE_INEXACT },
|
|
{ EXCEPTION_FLT_INVALID_OPERATION, _FPE_INVALID },
|
|
{ EXCEPTION_FLT_OVERFLOW, _FPE_OVERFLOW },
|
|
{ EXCEPTION_FLT_STACK_CHECK, _FPE_STACKOVERFLOW },
|
|
{ EXCEPTION_FLT_UNDERFLOW, _FPE_UNDERFLOW },
|
|
};
|
|
|
|
static LONG msvcrt_exception_filter(struct _EXCEPTION_POINTERS *except)
|
|
{
|
|
LONG ret = EXCEPTION_CONTINUE_SEARCH;
|
|
__sighandler_t handler;
|
|
|
|
if (!except || !except->ExceptionRecord)
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
|
|
switch (except->ExceptionRecord->ExceptionCode)
|
|
{
|
|
case EXCEPTION_ACCESS_VIOLATION:
|
|
if ((handler = sighandlers[SIGSEGV]) != SIG_DFL)
|
|
{
|
|
if (handler != SIG_IGN)
|
|
{
|
|
EXCEPTION_POINTERS **ep = (EXCEPTION_POINTERS**)__pxcptinfoptrs(), *old_ep;
|
|
|
|
old_ep = *ep;
|
|
*ep = except;
|
|
sighandlers[SIGSEGV] = SIG_DFL;
|
|
handler(SIGSEGV);
|
|
*ep = old_ep;
|
|
}
|
|
ret = EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
break;
|
|
/* According to msdn,
|
|
* the FPE signal handler takes as a second argument the type of
|
|
* floating point exception.
|
|
*/
|
|
case EXCEPTION_FLT_DENORMAL_OPERAND:
|
|
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
|
|
case EXCEPTION_FLT_INEXACT_RESULT:
|
|
case EXCEPTION_FLT_INVALID_OPERATION:
|
|
case EXCEPTION_FLT_OVERFLOW:
|
|
case EXCEPTION_FLT_STACK_CHECK:
|
|
case EXCEPTION_FLT_UNDERFLOW:
|
|
if ((handler = sighandlers[SIGFPE]) != SIG_DFL)
|
|
{
|
|
if (handler != SIG_IGN)
|
|
{
|
|
EXCEPTION_POINTERS **ep = (EXCEPTION_POINTERS**)__pxcptinfoptrs(), *old_ep;
|
|
unsigned int i;
|
|
int float_signal = _FPE_INVALID;
|
|
|
|
sighandlers[SIGFPE] = SIG_DFL;
|
|
for (i = 0; i < ARRAY_SIZE(float_exception_map); i++)
|
|
{
|
|
if (float_exception_map[i].status ==
|
|
except->ExceptionRecord->ExceptionCode)
|
|
{
|
|
float_signal = float_exception_map[i].signal;
|
|
break;
|
|
}
|
|
}
|
|
|
|
old_ep = *ep;
|
|
*ep = except;
|
|
((float_handler)handler)(SIGFPE, float_signal);
|
|
*ep = old_ep;
|
|
}
|
|
ret = EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
break;
|
|
case EXCEPTION_ILLEGAL_INSTRUCTION:
|
|
case EXCEPTION_PRIV_INSTRUCTION:
|
|
if ((handler = sighandlers[SIGILL]) != SIG_DFL)
|
|
{
|
|
if (handler != SIG_IGN)
|
|
{
|
|
EXCEPTION_POINTERS **ep = (EXCEPTION_POINTERS**)__pxcptinfoptrs(), *old_ep;
|
|
|
|
old_ep = *ep;
|
|
*ep = except;
|
|
sighandlers[SIGILL] = SIG_DFL;
|
|
handler(SIGILL);
|
|
*ep = old_ep;
|
|
}
|
|
ret = EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void msvcrt_init_signals(void)
|
|
{
|
|
SetConsoleCtrlHandler(msvcrt_console_handler, TRUE);
|
|
}
|
|
|
|
void msvcrt_free_signals(void)
|
|
{
|
|
SetConsoleCtrlHandler(msvcrt_console_handler, FALSE);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* signal (MSVCRT.@)
|
|
* Some signals may never be generated except through an explicit call to
|
|
* raise.
|
|
*/
|
|
__sighandler_t CDECL signal(int sig, __sighandler_t func)
|
|
{
|
|
__sighandler_t ret = SIG_ERR;
|
|
|
|
TRACE("(%d, %p)\n", sig, func);
|
|
|
|
if (func == SIG_ERR) return SIG_ERR;
|
|
|
|
switch (sig)
|
|
{
|
|
/* Cases handled internally. Note SIGTERM is never generated by Windows,
|
|
* so we effectively mask it.
|
|
*/
|
|
case SIGABRT:
|
|
case SIGFPE:
|
|
case SIGILL:
|
|
case SIGSEGV:
|
|
case SIGINT:
|
|
case SIGTERM:
|
|
case SIGBREAK:
|
|
ret = sighandlers[sig];
|
|
sighandlers[sig] = func;
|
|
break;
|
|
default:
|
|
ret = SIG_ERR;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* raise (MSVCRT.@)
|
|
*/
|
|
int CDECL raise(int sig)
|
|
{
|
|
__sighandler_t handler;
|
|
|
|
TRACE("(%d)\n", sig);
|
|
|
|
switch (sig)
|
|
{
|
|
case SIGFPE:
|
|
case SIGILL:
|
|
case SIGSEGV:
|
|
handler = sighandlers[sig];
|
|
if (handler == SIG_DFL) _exit(3);
|
|
if (handler != SIG_IGN)
|
|
{
|
|
EXCEPTION_POINTERS **ep = (EXCEPTION_POINTERS**)__pxcptinfoptrs(), *old_ep;
|
|
|
|
sighandlers[sig] = SIG_DFL;
|
|
|
|
old_ep = *ep;
|
|
*ep = NULL;
|
|
if (sig == SIGFPE)
|
|
((float_handler)handler)(sig, _FPE_EXPLICITGEN);
|
|
else
|
|
handler(sig);
|
|
*ep = old_ep;
|
|
}
|
|
break;
|
|
case SIGABRT:
|
|
case SIGINT:
|
|
case SIGTERM:
|
|
case SIGBREAK:
|
|
handler = sighandlers[sig];
|
|
if (handler == SIG_DFL) _exit(3);
|
|
if (handler != SIG_IGN)
|
|
{
|
|
sighandlers[sig] = SIG_DFL;
|
|
handler(sig);
|
|
}
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _XcptFilter (MSVCRT.@)
|
|
*/
|
|
int CDECL _XcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
|
|
{
|
|
TRACE("(%08lx,%p)\n", ex, ptr);
|
|
/* I assume ptr->ExceptionRecord->ExceptionCode is the same as ex */
|
|
return msvcrt_exception_filter(ptr);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CppXcptFilter (MSVCRT.@)
|
|
*/
|
|
int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
|
|
{
|
|
/* only filter c++ exceptions */
|
|
if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH;
|
|
return _XcptFilter(ex, ptr);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxDetectRethrow (MSVCRT.@)
|
|
*/
|
|
BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs)
|
|
{
|
|
PEXCEPTION_RECORD rec;
|
|
|
|
if (!ptrs)
|
|
return FALSE;
|
|
|
|
rec = ptrs->ExceptionRecord;
|
|
if (is_cxx_exception( rec ) && rec->ExceptionInformation[2])
|
|
{
|
|
ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record;
|
|
return TRUE;
|
|
}
|
|
return (msvcrt_get_thread_data()->exc_record == rec);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxExceptionFilter (MSVCRT.@)
|
|
*/
|
|
int CDECL __CxxExceptionFilter( EXCEPTION_POINTERS *ptrs, const type_info *ti, UINT flags, void **copy)
|
|
{
|
|
const cxx_type_info *type;
|
|
EXCEPTION_RECORD *rec;
|
|
uintptr_t exc_base;
|
|
|
|
TRACE( "%p %p %x %p\n", ptrs, ti, flags, copy );
|
|
|
|
if (!ptrs) return EXCEPTION_CONTINUE_SEARCH;
|
|
|
|
/* handle catch(...) */
|
|
if (!ti) return EXCEPTION_EXECUTE_HANDLER;
|
|
|
|
rec = ptrs->ExceptionRecord;
|
|
if (!is_cxx_exception( rec )) return EXCEPTION_CONTINUE_SEARCH;
|
|
|
|
if (rec->ExceptionInformation[1] == 0 && rec->ExceptionInformation[2] == 0)
|
|
{
|
|
rec = msvcrt_get_thread_data()->exc_record;
|
|
if (!rec) return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
|
|
exc_base = rec->ExceptionInformation[3];
|
|
type = find_caught_type( (cxx_exception_type *)rec->ExceptionInformation[2], exc_base, ti, flags );
|
|
if (!type) return EXCEPTION_CONTINUE_SEARCH;
|
|
|
|
if (copy) copy_exception( (void *)rec->ExceptionInformation[1], copy, flags, type, exc_base );
|
|
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxQueryExceptionSize (MSVCRT.@)
|
|
*/
|
|
unsigned int CDECL __CxxQueryExceptionSize(void)
|
|
{
|
|
return sizeof(cxx_exception_type);
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _abnormal_termination (MSVCRT.@)
|
|
*/
|
|
int CDECL __intrinsic_abnormal_termination(void)
|
|
{
|
|
FIXME("(void)stub\n");
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************
|
|
* __uncaught_exception (MSVCRT.@)
|
|
*/
|
|
BOOL CDECL __uncaught_exception(void)
|
|
{
|
|
return msvcrt_get_thread_data()->processing_throw != 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _fpieee_flt (MSVCRT.@)
|
|
*/
|
|
int __cdecl _fpieee_flt( __msvcrt_ulong code, EXCEPTION_POINTERS *ep,
|
|
int (__cdecl *handler)(_FPIEEE_RECORD*) )
|
|
{
|
|
switch (code)
|
|
{
|
|
case STATUS_FLOAT_DIVIDE_BY_ZERO:
|
|
case STATUS_FLOAT_INEXACT_RESULT:
|
|
case STATUS_FLOAT_INVALID_OPERATION:
|
|
case STATUS_FLOAT_OVERFLOW:
|
|
case STATUS_FLOAT_UNDERFLOW:
|
|
return handle_fpieee_flt( code, ep, handler );
|
|
default:
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
}
|
|
|
|
#if _MSVCR_VER>=70 && _MSVCR_VER<=71
|
|
|
|
/*********************************************************************
|
|
* _set_security_error_handler (MSVCR70.@)
|
|
*/
|
|
MSVCRT_security_error_handler CDECL _set_security_error_handler(
|
|
MSVCRT_security_error_handler handler )
|
|
{
|
|
MSVCRT_security_error_handler old = security_error_handler;
|
|
|
|
TRACE("(%p)\n", handler);
|
|
|
|
security_error_handler = handler;
|
|
return old;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __security_error_handler (MSVCR70.@)
|
|
*/
|
|
void CDECL __security_error_handler(int code, void *data)
|
|
{
|
|
if(security_error_handler)
|
|
security_error_handler(code, data);
|
|
else
|
|
FIXME("(%d, %p) stub\n", code, data);
|
|
|
|
_exit(3);
|
|
}
|
|
|
|
#endif /* _MSVCR_VER>=70 && _MSVCR_VER<=71 */
|
|
|
|
#if _MSVCR_VER>=110
|
|
/*********************************************************************
|
|
* __crtSetUnhandledExceptionFilter (MSVCR110.@)
|
|
*/
|
|
LPTOP_LEVEL_EXCEPTION_FILTER CDECL __crtSetUnhandledExceptionFilter(LPTOP_LEVEL_EXCEPTION_FILTER filter)
|
|
{
|
|
return SetUnhandledExceptionFilter(filter);
|
|
}
|
|
#endif
|
|
|
|
/*********************************************************************
|
|
* _CreateFrameInfo (MSVCR80.@)
|
|
*/
|
|
frame_info* CDECL _CreateFrameInfo(frame_info *fi, void *obj)
|
|
{
|
|
thread_data_t *data = msvcrt_get_thread_data();
|
|
|
|
TRACE("(%p, %p)\n", fi, obj);
|
|
|
|
fi->next = data->frame_info_head;
|
|
data->frame_info_head = fi;
|
|
fi->object = obj;
|
|
return fi;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _FindAndUnlinkFrame (MSVCR80.@)
|
|
*/
|
|
void CDECL _FindAndUnlinkFrame(frame_info *fi)
|
|
{
|
|
thread_data_t *data = msvcrt_get_thread_data();
|
|
frame_info *cur = data->frame_info_head;
|
|
|
|
TRACE("(%p)\n", fi);
|
|
|
|
if (cur == fi)
|
|
{
|
|
data->frame_info_head = cur->next;
|
|
return;
|
|
}
|
|
|
|
for (; cur->next; cur = cur->next)
|
|
{
|
|
if (cur->next == fi)
|
|
{
|
|
cur->next = fi->next;
|
|
return;
|
|
}
|
|
}
|
|
|
|
ERR("frame not found, native crashes in this case\n");
|
|
}
|
|
|
|
/*********************************************************************
|
|
* _IsExceptionObjectToBeDestroyed (MSVCR80.@)
|
|
*/
|
|
BOOL __cdecl _IsExceptionObjectToBeDestroyed(const void *obj)
|
|
{
|
|
frame_info *cur;
|
|
|
|
TRACE( "%p\n", obj );
|
|
|
|
for (cur = msvcrt_get_thread_data()->frame_info_head; cur; cur = cur->next)
|
|
{
|
|
if (cur->object == obj)
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __DestructExceptionObject (MSVCRT.@)
|
|
*/
|
|
void CDECL __DestructExceptionObject(EXCEPTION_RECORD *rec)
|
|
{
|
|
cxx_exception_type *info = (cxx_exception_type*) rec->ExceptionInformation[2];
|
|
void *object = (void*)rec->ExceptionInformation[1];
|
|
|
|
TRACE("(%p)\n", rec);
|
|
|
|
if (!is_cxx_exception( rec )) return;
|
|
|
|
if (!info || !info->destructor)
|
|
return;
|
|
|
|
call_dtor( rtti_rva( info->destructor, rec->ExceptionInformation[3] ), object );
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxRegisterExceptionObject (MSVCRT.@)
|
|
*/
|
|
BOOL CDECL __CxxRegisterExceptionObject(EXCEPTION_POINTERS *ep, cxx_frame_info *frame_info)
|
|
{
|
|
thread_data_t *data = msvcrt_get_thread_data();
|
|
|
|
TRACE("(%p, %p)\n", ep, frame_info);
|
|
|
|
if (!ep || !ep->ExceptionRecord)
|
|
{
|
|
frame_info->rec = (void*)-1;
|
|
frame_info->context = (void*)-1;
|
|
return TRUE;
|
|
}
|
|
|
|
frame_info->rec = data->exc_record;
|
|
frame_info->context = data->ctx_record;
|
|
data->exc_record = ep->ExceptionRecord;
|
|
data->ctx_record = ep->ContextRecord;
|
|
_CreateFrameInfo(&frame_info->frame_info, (void*)ep->ExceptionRecord->ExceptionInformation[1]);
|
|
return TRUE;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __CxxUnregisterExceptionObject (MSVCRT.@)
|
|
*/
|
|
void CDECL __CxxUnregisterExceptionObject(cxx_frame_info *frame_info, BOOL in_use)
|
|
{
|
|
thread_data_t *data = msvcrt_get_thread_data();
|
|
|
|
TRACE("(%p)\n", frame_info);
|
|
|
|
if(frame_info->rec == (void*)-1)
|
|
return;
|
|
|
|
_FindAndUnlinkFrame(&frame_info->frame_info);
|
|
if(data->exc_record->ExceptionCode == CXX_EXCEPTION && !in_use
|
|
&& _IsExceptionObjectToBeDestroyed((void*)data->exc_record->ExceptionInformation[1]))
|
|
__DestructExceptionObject(data->exc_record);
|
|
data->exc_record = frame_info->rec;
|
|
data->ctx_record = frame_info->context;
|
|
}
|
|
|
|
struct __std_exception_data {
|
|
char *what;
|
|
char dofree;
|
|
};
|
|
|
|
#if _MSVCR_VER>=140
|
|
|
|
/*********************************************************************
|
|
* __std_exception_copy (UCRTBASE.@)
|
|
*/
|
|
void CDECL __std_exception_copy(const struct __std_exception_data *src,
|
|
struct __std_exception_data *dst)
|
|
{
|
|
TRACE("(%p %p)\n", src, dst);
|
|
|
|
if(src->dofree && src->what) {
|
|
dst->what = _strdup(src->what);
|
|
dst->dofree = 1;
|
|
} else {
|
|
dst->what = src->what;
|
|
dst->dofree = 0;
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __std_exception_destroy (UCRTBASE.@)
|
|
*/
|
|
void CDECL __std_exception_destroy(struct __std_exception_data *data)
|
|
{
|
|
TRACE("(%p)\n", data);
|
|
|
|
if(data->dofree)
|
|
free(data->what);
|
|
data->what = NULL;
|
|
data->dofree = 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __current_exception (UCRTBASE.@)
|
|
*/
|
|
void** CDECL __current_exception(void)
|
|
{
|
|
TRACE("()\n");
|
|
return (void**)&msvcrt_get_thread_data()->exc_record;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __current_exception_context (UCRTBASE.@)
|
|
*/
|
|
void** CDECL __current_exception_context(void)
|
|
{
|
|
TRACE("()\n");
|
|
return (void**)&msvcrt_get_thread_data()->ctx_record;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* __processing_throw (UCRTBASE.@)
|
|
*/
|
|
int* CDECL __processing_throw(void)
|
|
{
|
|
TRACE("()\n");
|
|
return &msvcrt_get_thread_data()->processing_throw;
|
|
}
|
|
|
|
#endif /* _MSVCR_VER>=140 */
|