218 lines
7.8 KiB
C
218 lines
7.8 KiB
C
/*
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* msvcrt C++ exception handling
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*
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* Copyright 2011 Alexandre Julliard
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* Copyright 2013 André Hentschel
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* Copyright 2017 Martin Storsjo
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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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#include "config.h"
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#include "wine/port.h"
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#ifdef __aarch64__
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#include <stdarg.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 "wine/exception.h"
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#include "excpt.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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struct _DISPATCHER_CONTEXT;
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typedef LONG (WINAPI *PC_LANGUAGE_EXCEPTION_HANDLER)( EXCEPTION_POINTERS *ptrs, ULONG64 frame );
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typedef EXCEPTION_DISPOSITION (WINAPI *PEXCEPTION_ROUTINE)( EXCEPTION_RECORD *rec,
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ULONG64 frame,
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CONTEXT *context,
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struct _DISPATCHER_CONTEXT *dispatch );
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typedef struct _DISPATCHER_CONTEXT
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{
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DWORD64 ControlPc;
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DWORD64 ImageBase;
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PRUNTIME_FUNCTION FunctionEntry;
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DWORD64 EstablisherFrame;
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DWORD64 TargetPc;
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PCONTEXT ContextRecord;
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PEXCEPTION_ROUTINE LanguageHandler;
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PVOID HandlerData;
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PUNWIND_HISTORY_TABLE HistoryTable;
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DWORD ScopeIndex;
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BOOLEAN ControlPcIsUnwound;
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PBYTE NonVolatileRegisters;
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} DISPATCHER_CONTEXT;
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/*********************************************************************
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* __CxxExceptionFilter (MSVCRT.@)
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*/
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int CDECL __CxxExceptionFilter( PEXCEPTION_POINTERS ptrs,
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const type_info *ti, int flags, void **copy )
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{
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FIXME( "%p %p %x %p: not implemented\n", ptrs, ti, flags, copy );
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return EXCEPTION_CONTINUE_SEARCH;
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}
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/*********************************************************************
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* __CxxFrameHandler (MSVCRT.@)
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*/
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EXCEPTION_DISPOSITION CDECL __CxxFrameHandler(EXCEPTION_RECORD *rec, DWORD frame, CONTEXT *context,
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DISPATCHER_CONTEXT *dispatch)
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{
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FIXME("%p %x %p %p: not implemented\n", rec, frame, context, dispatch);
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return ExceptionContinueSearch;
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}
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/*********************************************************************
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* __CppXcptFilter (MSVCRT.@)
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*/
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int CDECL __CppXcptFilter(NTSTATUS ex, PEXCEPTION_POINTERS ptr)
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{
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/* only filter c++ exceptions */
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if (ex != CXX_EXCEPTION) return EXCEPTION_CONTINUE_SEARCH;
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return _XcptFilter(ex, ptr);
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}
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/*********************************************************************
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* __CxxDetectRethrow (MSVCRT.@)
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*/
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BOOL CDECL __CxxDetectRethrow(PEXCEPTION_POINTERS ptrs)
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{
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PEXCEPTION_RECORD rec;
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if (!ptrs)
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return FALSE;
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rec = ptrs->ExceptionRecord;
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if (rec->ExceptionCode == CXX_EXCEPTION &&
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rec->NumberParameters == 3 &&
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rec->ExceptionInformation[0] == CXX_FRAME_MAGIC_VC6 &&
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rec->ExceptionInformation[2])
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{
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ptrs->ExceptionRecord = msvcrt_get_thread_data()->exc_record;
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return TRUE;
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}
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return (msvcrt_get_thread_data()->exc_record == rec);
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}
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/*********************************************************************
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* __CxxQueryExceptionSize (MSVCRT.@)
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*/
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unsigned int CDECL __CxxQueryExceptionSize(void)
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{
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return sizeof(cxx_exception_type);
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}
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/*******************************************************************
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* _setjmp (MSVCRT.@)
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*/
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__ASM_GLOBAL_FUNC(MSVCRT__setjmp,
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"mov x1, #0\n\t" /* frame */
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"b " __ASM_NAME("MSVCRT__setjmpex"));
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/*******************************************************************
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* _setjmpex (MSVCRT.@)
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*/
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__ASM_GLOBAL_FUNC(MSVCRT__setjmpex,
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"str x1, [x0]\n\t" /* jmp_buf->Frame */
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"stp x19, x20, [x0, #0x10]\n\t" /* jmp_buf->X19, X20 */
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"stp x21, x22, [x0, #0x20]\n\t" /* jmp_buf->X21, X22 */
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"stp x23, x24, [x0, #0x30]\n\t" /* jmp_buf->X23, X24 */
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"stp x25, x26, [x0, #0x40]\n\t" /* jmp_buf->X25, X26 */
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"stp x27, x28, [x0, #0x50]\n\t" /* jmp_buf->X27, X28 */
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"stp x29, x30, [x0, #0x60]\n\t" /* jmp_buf->Fp, Lr */
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"mov x2, sp\n\t"
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"str x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */
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"mrs x2, fpcr\n\t"
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"str w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */
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"mrs x2, fpsr\n\t"
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"str w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */
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"stp d8, d9, [x0, #0x80]\n\t" /* jmp_buf->D[0-1] */
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"stp d10, d11, [x0, #0x90]\n\t" /* jmp_buf->D[2-3] */
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"stp d12, d13, [x0, #0xa0]\n\t" /* jmp_buf->D[4-5] */
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"stp d14, d15, [x0, #0xb0]\n\t" /* jmp_buf->D[6-7] */
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"mov x0, #0\n\t"
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"ret");
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extern void DECLSPEC_NORETURN CDECL longjmp_set_regs(struct MSVCRT___JUMP_BUFFER *jmp, int retval);
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__ASM_GLOBAL_FUNC(longjmp_set_regs,
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"ldp x19, x20, [x0, #0x10]\n\t" /* jmp_buf->X19, X20 */
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"ldp x21, x22, [x0, #0x20]\n\t" /* jmp_buf->X21, X22 */
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"ldp x23, x24, [x0, #0x30]\n\t" /* jmp_buf->X23, X24 */
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"ldp x25, x26, [x0, #0x40]\n\t" /* jmp_buf->X25, X26 */
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"ldp x27, x28, [x0, #0x50]\n\t" /* jmp_buf->X27, X28 */
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"ldp x29, x30, [x0, #0x60]\n\t" /* jmp_buf->Fp, Lr */
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"ldr x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */
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"mov sp, x2\n\t"
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"ldr w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */
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"msr fpcr, x2\n\t"
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"ldr w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */
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"msr fpsr, x2\n\t"
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"ldp d8, d9, [x0, #0x80]\n\t" /* jmp_buf->D[0-1] */
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"ldp d10, d11, [x0, #0x90]\n\t" /* jmp_buf->D[2-3] */
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"ldp d12, d13, [x0, #0xa0]\n\t" /* jmp_buf->D[4-5] */
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"ldp d14, d15, [x0, #0xb0]\n\t" /* jmp_buf->D[6-7] */
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"mov x0, x1\n\t" /* retval */
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"ret");
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/*******************************************************************
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* longjmp (MSVCRT.@)
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*/
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void __cdecl MSVCRT_longjmp(struct MSVCRT___JUMP_BUFFER *jmp, int retval)
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{
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EXCEPTION_RECORD rec;
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if (!retval) retval = 1;
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if (jmp->Frame)
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{
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rec.ExceptionCode = STATUS_LONGJUMP;
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rec.ExceptionFlags = 0;
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rec.ExceptionRecord = NULL;
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rec.ExceptionAddress = NULL;
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rec.NumberParameters = 1;
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rec.ExceptionInformation[0] = (DWORD_PTR)jmp;
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RtlUnwind((void *)jmp->Frame, (void *)jmp->Lr, &rec, IntToPtr(retval));
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}
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longjmp_set_regs(jmp, retval);
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}
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/*********************************************************************
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* _fpieee_flt (MSVCRT.@)
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*/
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int __cdecl _fpieee_flt(ULONG exception_code, EXCEPTION_POINTERS *ep,
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int (__cdecl *handler)(_FPIEEE_RECORD*))
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{
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FIXME("(%x %p %p)\n", exception_code, ep, handler);
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return EXCEPTION_CONTINUE_SEARCH;
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}
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#endif /* __aarch64__ */
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