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/*
* tclWinFCmd.c
*
* This file implements the Windows specific portion of file manipulation
* subcommands of the "file" command.
*
* Copyright (c) 1996-1998 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclWinFCmd.c,v 1.32 2003/01/16 19:01:59 mdejong Exp $
*/
#include "tclWinInt.h"
/*
* The following constants specify the type of callback when
* TraverseWinTree() calls the traverseProc()
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/*
* tclWinFCmd.c
*
* This file implements the Windows specific portion of file manipulation
* subcommands of the "file" command.
*
* Copyright (c) 1996-1998 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclWinFCmd.c,v 1.33 2003/01/25 14:11:33 mdejong Exp $
*/
#include "tclWinInt.h"
/*
* The following constants specify the type of callback when
* TraverseWinTree() calls the traverseProc()
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{GetWinFileAttributes, SetWinFileAttributes},
{GetWinFileAttributes, SetWinFileAttributes},
{GetWinFileLongName, CannotSetAttribute},
{GetWinFileAttributes, SetWinFileAttributes},
{GetWinFileShortName, CannotSetAttribute},
{GetWinFileAttributes, SetWinFileAttributes}};
#ifdef HAVE_NO_SEH
static void *ESP;
static void *EBP;
#endif /* HAVE_NO_SEH */
/*
* Prototype for the TraverseWinTree callback function.
*/
typedef int (TraversalProc)(CONST TCHAR *srcPtr, CONST TCHAR *dstPtr,
int type, Tcl_DString *errorPtr);
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{GetWinFileAttributes, SetWinFileAttributes},
{GetWinFileAttributes, SetWinFileAttributes},
{GetWinFileLongName, CannotSetAttribute},
{GetWinFileAttributes, SetWinFileAttributes},
{GetWinFileShortName, CannotSetAttribute},
{GetWinFileAttributes, SetWinFileAttributes}};
#if defined(HAVE_NO_SEH) && defined(TCL_MEM_DEBUG)
static void *INITIAL_ESP,
*INITIAL_EBP,
*INITIAL_HANDLER,
*RESTORED_ESP,
*RESTORED_EBP,
*RESTORED_HANDLER;
#endif /* HAVE_NO_SEH && TCL_MEM_DEBUG */
/*
* Prototype for the TraverseWinTree callback function.
*/
typedef int (TraversalProc)(CONST TCHAR *srcPtr, CONST TCHAR *dstPtr,
int type, Tcl_DString *errorPtr);
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/*
* The MoveFile API would throw an exception under NT
* if one of the arguments is a char block device.
*/
#ifdef HAVE_NO_SEH
__asm__ __volatile__ (
"movl %esp, _ESP" "\n\t"
"movl %ebp, _EBP");
__asm__ __volatile__ (
"pushl $__except_dorenamefile_handler" "\n\t"
"pushl %fs:0" "\n\t"
"mov %esp, %fs:0");
#else
__try {
#endif /* HAVE_NO_SEH */
if ((*tclWinProcs->moveFileProc)(nativeSrc, nativeDst) != FALSE) {
retval = TCL_OK;
}
#ifdef HAVE_NO_SEH
__asm__ __volatile__ (
"jmp dorenamefile_pop" "\n"
"dorenamefile_reentry:" "\n\t"
"movl _ESP, %esp" "\n\t"
"movl _EBP, %ebp");
__asm__ __volatile__ (
"dorenamefile_pop:" "\n\t"
"mov (%esp), %eax" "\n\t"
"mov %eax, %fs:0" "\n\t"
"add $8, %esp");
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/*
* The MoveFile API would throw an exception under NT
* if one of the arguments is a char block device.
*/
#ifdef HAVE_NO_SEH
# ifdef TCL_MEM_DEBUG
__asm__ __volatile__ (
"movl %%esp, %0" "\n\t"
"movl %%ebp, %1" "\n\t"
"movl %%fs:0, %2" "\n\t"
: "=m"(INITIAL_ESP),
"=m"(INITIAL_EBP),
"=r"(INITIAL_HANDLER) );
# endif /* TCL_MEM_DEBUG */
__asm__ __volatile__ (
"pushl %ebp" "\n\t"
"pushl $__except_dorenamefile_handler" "\n\t"
"pushl %fs:0" "\n\t"
"movl %esp, %fs:0");
#else
__try {
#endif /* HAVE_NO_SEH */
if ((*tclWinProcs->moveFileProc)(nativeSrc, nativeDst) != FALSE) {
retval = TCL_OK;
}
#ifdef HAVE_NO_SEH
__asm__ __volatile__ (
"jmp dorenamefile_pop" "\n"
"dorenamefile_reentry:" "\n\t"
"movl %%fs:0, %%eax" "\n\t"
"movl 0x8(%%eax), %%esp" "\n\t"
"movl 0x8(%%esp), %%ebp" "\n"
"dorenamefile_pop:" "\n\t"
"movl (%%esp), %%eax" "\n\t"
"movl %%eax, %%fs:0" "\n\t"
"add $12, %%esp" "\n\t"
:
:
: "%eax");
# ifdef TCL_MEM_DEBUG
__asm__ __volatile__ (
"movl %%esp, %0" "\n\t"
"movl %%ebp, %1" "\n\t"
"movl %%fs:0, %2" "\n\t"
: "=m"(RESTORED_ESP),
"=m"(RESTORED_EBP),
"=r"(RESTORED_HANDLER) );
if (INITIAL_ESP != RESTORED_ESP)
panic("ESP restored incorrectly");
if (INITIAL_EBP != RESTORED_EBP)
panic("EBP restored incorrectly");
if (INITIAL_HANDLER != RESTORED_HANDLER)
panic("HANDLER restored incorrectly");
# endif /* TCL_MEM_DEBUG */
#else
} __except (EXCEPTION_EXECUTE_HANDLER) {}
#endif /* HAVE_NO_SEH */
/*
* Avoid using control flow statements in the SEH guarded block!
*/
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struct _EXCEPTION_RECORD *ExceptionRecord,
void *EstablisherFrame,
struct _CONTEXT *ContextRecord,
void *DispatcherContext)
{
__asm__ __volatile__ (
"jmp dorenamefile_reentry");
return 0; /* Function does not return */
}
#endif /* HAVE_NO_SEH */
/*
*---------------------------------------------------------------------------
*
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struct _EXCEPTION_RECORD *ExceptionRecord,
void *EstablisherFrame,
struct _CONTEXT *ContextRecord,
void *DispatcherContext)
{
__asm__ __volatile__ (
"jmp dorenamefile_reentry");
/* Nuke compiler warning about unused static function */
_except_dorenamefile_handler(NULL, NULL, NULL, NULL);
return 0; /* Function does not return */
}
#endif /* HAVE_NO_SEH */
/*
*---------------------------------------------------------------------------
*
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/*
* The CopyFile API would throw an exception under NT if one
* of the arguments is a char block device.
*/
#ifdef HAVE_NO_SEH
__asm__ __volatile__ (
"movl %esp, _ESP" "\n\t"
"movl %ebp, _EBP");
__asm__ __volatile__ (
"pushl $__except_docopyfile_handler" "\n\t"
"pushl %fs:0" "\n\t"
"mov %esp, %fs:0");
#else
__try {
#endif /* HAVE_NO_SEH */
if ((*tclWinProcs->copyFileProc)(nativeSrc, nativeDst, 0) != FALSE) {
retval = TCL_OK;
}
#ifdef HAVE_NO_SEH
__asm__ __volatile__ (
"jmp docopyfile_pop" "\n"
"docopyfile_reentry:" "\n\t"
"movl _ESP, %esp" "\n\t"
"movl _EBP, %ebp");
__asm__ __volatile__ (
"docopyfile_pop:" "\n\t"
"mov (%esp), %eax" "\n\t"
"mov %eax, %fs:0" "\n\t"
"add $8, %esp");
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/*
* The CopyFile API would throw an exception under NT if one
* of the arguments is a char block device.
*/
#ifdef HAVE_NO_SEH
# ifdef TCL_MEM_DEBUG
__asm__ __volatile__ (
"movl %%esp, %0" "\n\t"
"movl %%ebp, %1" "\n\t"
"movl %%fs:0, %2" "\n\t"
: "=m"(INITIAL_ESP),
"=m"(INITIAL_EBP),
"=r"(INITIAL_HANDLER) );
# endif /* TCL_MEM_DEBUG */
__asm__ __volatile__ (
"pushl %ebp" "\n\t"
"pushl $__except_docopyfile_handler" "\n\t"
"pushl %fs:0" "\n\t"
"movl %esp, %fs:0");
#else
__try {
#endif /* HAVE_NO_SEH */
if ((*tclWinProcs->copyFileProc)(nativeSrc, nativeDst, 0) != FALSE) {
retval = TCL_OK;
}
#ifdef HAVE_NO_SEH
__asm__ __volatile__ (
"jmp docopyfile_pop" "\n"
"docopyfile_reentry:" "\n\t"
"movl %%fs:0, %%eax" "\n\t"
"movl 0x8(%%eax), %%esp" "\n\t"
"movl 0x8(%%esp), %%ebp" "\n"
"docopyfile_pop:" "\n\t"
"movl (%%esp), %%eax" "\n\t"
"movl %%eax, %%fs:0" "\n\t"
"add $12, %%esp" "\n\t"
:
:
: "%eax");
# ifdef TCL_MEM_DEBUG
__asm__ __volatile__ (
"movl %%esp, %0" "\n\t"
"movl %%ebp, %1" "\n\t"
"movl %%fs:0, %2" "\n\t"
: "=m"(RESTORED_ESP),
"=m"(RESTORED_EBP),
"=r"(RESTORED_HANDLER) );
if (INITIAL_ESP != RESTORED_ESP)
panic("ESP restored incorrectly");
if (INITIAL_EBP != RESTORED_EBP)
panic("EBP restored incorrectly");
if (INITIAL_HANDLER != RESTORED_HANDLER)
panic("HANDLER restored incorrectly");
# endif /* TCL_MEM_DEBUG */
#else
} __except (EXCEPTION_EXECUTE_HANDLER) {}
#endif /* HAVE_NO_SEH */
/*
* Avoid using control flow statements in the SEH guarded block!
*/
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struct _EXCEPTION_RECORD *ExceptionRecord,
void *EstablisherFrame,
struct _CONTEXT *ContextRecord,
void *DispatcherContext)
{
__asm__ __volatile__ (
"jmp docopyfile_reentry");
return 0; /* Function does not return */
}
#endif /* HAVE_NO_SEH */
/*
*---------------------------------------------------------------------------
*
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struct _EXCEPTION_RECORD *ExceptionRecord,
void *EstablisherFrame,
struct _CONTEXT *ContextRecord,
void *DispatcherContext)
{
__asm__ __volatile__ (
"jmp docopyfile_reentry");
_except_docopyfile_handler(NULL,NULL,NULL,NULL);
return 0; /* Function does not return */
}
#endif /* HAVE_NO_SEH */
/*
*---------------------------------------------------------------------------
*
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Tcl_ListObjAppendElement(NULL, resultPtr, elemPtr);
}
}
Tcl_IncrRefCount(resultPtr);
return resultPtr;
}
#ifdef HAVE_NO_SEH
/*
* This method exists only to stop the compiler from emitting
* warnings about variables and methods accessed only from asm.
*/
static void squelch_warnings()
{
void *ptr;
ptr = _except_dorenamefile_handler;
ptr = _except_docopyfile_handler;
ESP = 0;
EBP = 0;
squelch_warnings();
}
#endif /* HAVE_NO_SEH */
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Tcl_ListObjAppendElement(NULL, resultPtr, elemPtr);
}
}
Tcl_IncrRefCount(resultPtr);
return resultPtr;
}
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