diff options
Diffstat (limited to 'win/tclWinChan.c')
| -rw-r--r-- | win/tclWinChan.c | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/win/tclWinChan.c b/win/tclWinChan.c index 52084a6..d850b62 100644 --- a/win/tclWinChan.c +++ b/win/tclWinChan.c @@ -9,7 +9,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclWinChan.c,v 1.20 2002/02/15 14:28:51 dkf Exp $ + * RCS: @(#) $Id: tclWinChan.c,v 1.21 2002/03/15 01:10:19 mdejong Exp $ */ #include "tclWinInt.h" @@ -118,6 +118,11 @@ static Tcl_ChannelType fileChannelType = { NULL, /* handler proc. */ }; +#ifdef HAVE_NO_SEH +static void *ESP; +static void *EBP; +#endif /* HAVE_NO_SEH */ + /* *---------------------------------------------------------------------- @@ -983,8 +988,39 @@ Tcl_MakeFileChannel(rawHandle, mode) * of this duped handle which might throw EXCEPTION_INVALID_HANDLE. */ +#ifdef HAVE_NO_SEH + __asm__ __volatile__ ( + "movl %esp, _ESP" "\n\t" + "movl %ebp, _EBP"); + + __asm__ __volatile__ ( + "pushl $__except_makefilechannel_handler" "\n\t" + "pushl %fs:0" "\n\t" + "mov %esp, %fs:0"); + + result = 0; +#else __try { +#endif /* HAVE_NO_SEH */ CloseHandle(dupedHandle); +#ifdef HAVE_NO_SEH + __asm__ __volatile__ ( + "jmp makefilechannel_pop" "\n" + "makefilechannel_reentry:" "\n\t" + "movl _ESP, %esp" "\n\t" + "movl _EBP, %ebp"); + + result = 1; /* True when exception was raised */ + + __asm__ __volatile__ ( + "makefilechannel_pop:" "\n\t" + "mov (%esp), %eax" "\n\t" + "mov %eax, %fs:0" "\n\t" + "add $8, %esp"); + + if (result) + return NULL; +#else } __except (EXCEPTION_EXECUTE_HANDLER) { /* @@ -994,6 +1030,7 @@ Tcl_MakeFileChannel(rawHandle, mode) return NULL; } +#endif /* HAVE_NO_SEH */ /* Fall through, the handle is valid. */ @@ -1007,6 +1044,21 @@ Tcl_MakeFileChannel(rawHandle, mode) return channel; } +#ifdef HAVE_NO_SEH +static +__attribute__ ((cdecl)) +EXCEPTION_DISPOSITION +_except_makefilechannel_handler( + struct _EXCEPTION_RECORD *ExceptionRecord, + void *EstablisherFrame, + struct _CONTEXT *ContextRecord, + void *DispatcherContext) +{ + __asm__ __volatile__ ( + "jmp makefilechannel_reentry"); + return 0; /* Function does not return */ +} +#endif /* *---------------------------------------------------------------------- |