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Diffstat (limited to 'src/VBox/Devices/Graphics/shaderlib/wine/include/wine/exception.h')
| -rw-r--r-- | src/VBox/Devices/Graphics/shaderlib/wine/include/wine/exception.h | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/src/VBox/Devices/Graphics/shaderlib/wine/include/wine/exception.h b/src/VBox/Devices/Graphics/shaderlib/wine/include/wine/exception.h new file mode 100644 index 00000000..82f1323f --- /dev/null +++ b/src/VBox/Devices/Graphics/shaderlib/wine/include/wine/exception.h @@ -0,0 +1,282 @@ +/* + * Wine exception handling + * + * Copyright (c) 1999 Alexandre Julliard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + */ + +/* + * Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice + * other than GPL or LGPL is available it will apply instead, Oracle elects to use only + * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where + * a choice of LGPL license versions is made available with the language indicating + * that LGPLv2 or any later version may be used, or where a choice of which version + * of the LGPL is applied is otherwise unspecified. + */ + +#ifndef __WINE_WINE_EXCEPTION_H +#define __WINE_WINE_EXCEPTION_H + +#include <setjmp.h> +#include <windef.h> +#include <excpt.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* The following definitions allow using exceptions in Wine and Winelib code + * + * They should be used like this: + * + * __TRY + * { + * do some stuff that can raise an exception + * } + * __EXCEPT(filter_func) + * { + * handle the exception here + * } + * __ENDTRY + * + * or + * + * __TRY + * { + * do some stuff that can raise an exception + * } + * __FINALLY(finally_func) + * + * The filter_func and finally_func functions must be defined like this: + * + * LONG CALLBACK filter_func( PEXCEPTION_POINTERS __eptr ) { ... } + * + * void CALLBACK finally_func( BOOL __normal ) { ... } + * + * The filter function must return one of the EXCEPTION_* code; it can + * use GetExceptionInformation() and GetExceptionCode() to retrieve the + * exception info. + * + * Warning: inside a __TRY or __EXCEPT block, 'break' or 'continue' statements + * break out of the current block. You cannot use 'return', 'goto' + * or 'longjmp' to leave a __TRY block, as this will surely crash. + * You can use them to leave a __EXCEPT block though. + * + * -- AJ + */ + +#ifndef __GNUC__ +#define __attribute__(x) /* nothing */ +#endif + +/* Define this if you want to use your compiler built-in __try/__except support. + * This is only useful when compiling to a native Windows binary, as the built-in + * compiler exceptions will most certainly not work under Winelib. + */ +#ifdef USE_COMPILER_EXCEPTIONS + +#define __TRY __try +#define __EXCEPT(func) __except((func)(GetExceptionInformation())) +#define __FINALLY(func) __finally { (func)(!AbnormalTermination()); } +#define __ENDTRY /*nothing*/ +#define __EXCEPT_PAGE_FAULT __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION) +#define __EXCEPT_ALL __except(EXCEPTION_EXECUTE_HANDLER) + +#else /* USE_COMPILER_EXCEPTIONS */ + +#if defined(__MINGW32__) || defined(__CYGWIN__) +#define sigjmp_buf jmp_buf +#define sigsetjmp(buf,sigs) setjmp(buf) +#define siglongjmp(buf,val) longjmp(buf,val) +#endif + +extern void __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *record, + void (*target)(void) ) DECLSPEC_HIDDEN DECLSPEC_NORETURN; +extern DWORD __wine_exception_handler( EXCEPTION_RECORD *record, + EXCEPTION_REGISTRATION_RECORD *frame, + CONTEXT *context, + EXCEPTION_REGISTRATION_RECORD **pdispatcher ) DECLSPEC_HIDDEN; +extern DWORD __wine_exception_handler_page_fault( EXCEPTION_RECORD *record, + EXCEPTION_REGISTRATION_RECORD *frame, + CONTEXT *context, + EXCEPTION_REGISTRATION_RECORD **pdispatcher ) DECLSPEC_HIDDEN; +extern DWORD __wine_exception_handler_all( EXCEPTION_RECORD *record, + EXCEPTION_REGISTRATION_RECORD *frame, + CONTEXT *context, + EXCEPTION_REGISTRATION_RECORD **pdispatcher ) DECLSPEC_HIDDEN; +extern DWORD __wine_finally_handler( EXCEPTION_RECORD *record, + EXCEPTION_REGISTRATION_RECORD *frame, + CONTEXT *context, + EXCEPTION_REGISTRATION_RECORD **pdispatcher ) DECLSPEC_HIDDEN; + +#define __TRY \ + do { __WINE_FRAME __f; \ + int __first = 1; \ + for (;;) if (!__first) \ + { \ + do { + +#define __EXCEPT(func) \ + } while(0); \ + __wine_pop_frame( &__f.frame ); \ + break; \ + } else { \ + __f.frame.Handler = __wine_exception_handler; \ + __f.u.filter = (func); \ + if (sigsetjmp( __f.jmp, 0 )) { \ + const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \ + do { + +/* convenience handler for page fault exceptions */ +#define __EXCEPT_PAGE_FAULT \ + } while(0); \ + __wine_pop_frame( &__f.frame ); \ + break; \ + } else { \ + __f.frame.Handler = __wine_exception_handler_page_fault; \ + if (sigsetjmp( __f.jmp, 0 )) { \ + const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \ + do { + +/* convenience handler for all exception */ +#define __EXCEPT_ALL \ + } while(0); \ + __wine_pop_frame( &__f.frame ); \ + break; \ + } else { \ + __f.frame.Handler = __wine_exception_handler_all; \ + if (sigsetjmp( __f.jmp, 0 )) { \ + const __WINE_FRAME * const __eptr __attribute__((unused)) = &__f; \ + do { + +#define __ENDTRY \ + } while (0); \ + break; \ + } \ + __wine_push_frame( &__f.frame ); \ + __first = 0; \ + } \ + } while (0); + +#define __FINALLY(func) \ + } while(0); \ + __wine_pop_frame( &__f.frame ); \ + (func)(1); \ + break; \ + } else { \ + __f.frame.Handler = __wine_finally_handler; \ + __f.u.finally_func = (func); \ + __wine_push_frame( &__f.frame ); \ + __first = 0; \ + } \ + } while (0); + + +typedef LONG (CALLBACK *__WINE_FILTER)(PEXCEPTION_POINTERS); +typedef void (CALLBACK *__WINE_FINALLY)(BOOL); + +#define GetExceptionInformation() (__eptr) +#define GetExceptionCode() (__eptr->ExceptionRecord->ExceptionCode) +#define AbnormalTermination() (!__normal) + +typedef struct __tagWINE_FRAME +{ + EXCEPTION_REGISTRATION_RECORD frame; + union + { + /* exception data */ + __WINE_FILTER filter; + /* finally data */ + __WINE_FINALLY finally_func; + } u; + sigjmp_buf jmp; + /* hack to make GetExceptionCode() work in handler */ + DWORD ExceptionCode; + const struct __tagWINE_FRAME *ExceptionRecord; +} __WINE_FRAME; + +#endif /* USE_COMPILER_EXCEPTIONS */ + +static inline EXCEPTION_REGISTRATION_RECORD *__wine_push_frame( EXCEPTION_REGISTRATION_RECORD *frame ) +{ +#if defined(__GNUC__) && defined(__i386__) + EXCEPTION_REGISTRATION_RECORD *prev; + __asm__ __volatile__(".byte 0x64\n\tmovl (0),%0" + "\n\tmovl %0,(%1)" + "\n\t.byte 0x64\n\tmovl %1,(0)" + : "=&r" (prev) : "r" (frame) : "memory" ); + return prev; +#else + NT_TIB *teb = (NT_TIB *)NtCurrentTeb(); + frame->Prev = teb->ExceptionList; + teb->ExceptionList = frame; + return frame->Prev; +#endif +} + +static inline EXCEPTION_REGISTRATION_RECORD *__wine_pop_frame( EXCEPTION_REGISTRATION_RECORD *frame ) +{ +#if defined(__GNUC__) && defined(__i386__) + __asm__ __volatile__(".byte 0x64\n\tmovl %0,(0)" + : : "r" (frame->Prev) : "memory" ); + return frame->Prev; + +#else + NT_TIB *teb = (NT_TIB *)NtCurrentTeb(); + teb->ExceptionList = frame->Prev; + return frame->Prev; +#endif +} + +static inline EXCEPTION_REGISTRATION_RECORD *__wine_get_frame(void) +{ +#if defined(__GNUC__) && defined(__i386__) + EXCEPTION_REGISTRATION_RECORD *ret; + __asm__ __volatile__(".byte 0x64\n\tmovl (0),%0" : "=r" (ret) ); + return ret; +#else + NT_TIB *teb = (NT_TIB *)NtCurrentTeb(); + return teb->ExceptionList; +#endif +} + +/* Exception handling flags - from OS/2 2.0 exception handling */ + +/* Win32 seems to use the same flags as ExceptionFlags in an EXCEPTION_RECORD */ +#define EH_NONCONTINUABLE 0x01 +#define EH_UNWINDING 0x02 +#define EH_EXIT_UNWIND 0x04 +#define EH_STACK_INVALID 0x08 +#define EH_NESTED_CALL 0x10 +#define EH_TARGET_UNWIND 0x20 + +/* Wine-specific exceptions codes */ + +#define EXCEPTION_WINE_STUB 0x80000100 /* stub entry point called */ +#define EXCEPTION_WINE_ASSERTION 0x80000101 /* assertion failed */ + +/* unhandled return status from vm86 mode */ +#define EXCEPTION_VM86_INTx 0x80000110 +#define EXCEPTION_VM86_STI 0x80000111 +#define EXCEPTION_VM86_PICRETURN 0x80000112 + +extern void __wine_enter_vm86( CONTEXT *context ); + +#ifdef __cplusplus +} +#endif + +#endif /* __WINE_WINE_EXCEPTION_H */ |