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Sat Jul 22 22:39:09 IDT 1995 Michael Veksler <e1678223@tochnapc2.technion.ac.il> * [ipc/*] New directory. This directory contains the new inter-wine communications support. It enables DDE protocols between two wine instances. Currently it is limited to DDE, but can be enhanced to support OLE between 2 different wine instances. This is very important for libwine.a DDE/OLE support. * [tools/ipcl] A script to delete garbage IPC handles (shared memory, semaphores and message queues). The current inter-wine communication is not perfect, and sometimes leaves garbage behind. * [if1632/relay.c] [include/atom.h] [include/global.h] [loader/selector.c] [loader/task.c] [loader/module.c] [loader/signal.c] [memory/global.c] [misc/atom.c] [windows/class.c] [windows/message.c] [windows/win.c] [Imakefile] Hooks for inter-wine DDE support, current Global.*Atom functions renamed to Local.*Atom since Global.*Atom are used for Inter-Wine DDE communication. (The first call to these functions sets up the IPC structures - which otherwise cause unneeded overhead. Mon Jul 17 19:55:21 1995 Alexandre Julliard <julliard@sunsite.unc.edu> * [controls/menu.c] Don't crash if a NULL string is passed to menu functions. * [memory/selector.c] We now use a bit in ldt_flags_copy to indicate free LDT entries. Fixed a bug in SELECTOR_ReallocBlock that could cause it to overwrite valid LDT entries when growing a block. * [miscemu/instr.c] Emulate int xx instruction by storing the interrupt vector in CS:IP and returning directly. This allows a program to install an interrupt vector. * [windows/win.c] Added function WIN_GetTopParent to get the top-level parent of a window. Sun Jul 16 18:17:17 1995 Gregory Trubetskoy <grisha@mira.com> * [loader/resource.c] Added LoadIconHandler. It doesn't do anything yet, but now you can use borland help files with winhelp.exe. Sun Jul 16 11:58:45 1995 Anand Kumria <akumria@ozemail.com.au> * [misc/main.c] Fixed to return 386 Enhanced mode correctly. Also return the same type of CPU, for both Enhanced and Standard mode, namely a 386. Sun Jul 16 00:02:04 1995 Martin von Loewis <loewis@informatik.hu-berlin.de> * [Configure] [include/options.h] [include/wineopts.h] [misc/main.c][misc/spy.c] Removed support of spy file. Redirected spy messages to stddeb. Removed -spy option. Added -debugmsg +spy option. * [debugger/dbg.y][debugger/debug.l] Enabled segmented addresses (seg:offs) for break and x commands. * [if1632/gdi.spec] [objects/region.c] [windows/graphics.c] [include/region.h] FrameRgn, REGION_FrameRgn: New functions * [if1632/kernel.spec] IsWinOldApTask: Return false * [if1632/mouse.spec] CplApplet: Removed * [if1632/user.spec] [windows/win.c] ShowOwnedPopups: New function * [if1632/winsock.spec] [misc/winsocket.c] inet_addr, select: New prototypes in relay code Fixed memory layout for netdb functions (getXbyY). WINSOCK_ioctlsocket: Translated FIONREAD, FIONBIO, and FIOASYNC * [objects/clipping.c] RectVisible: Fixed call to LPToDP * [rc/winerc.c] main: Removed extra argument to getopt for Linux. Tue Jul 11 00:14:41 1995 Bernd Schmidt <crux@pool.informatik.rwth-aachen.de> * [controls/listbox.c] Yet another fix for ListBoxDirectory(). * [loader/module.c] [if1632/kernel.spec] Make GetModuleHandle() accept instance handles as parameter. * [if1632/relay.c] [loader/task.c] Put a magic cookie at the bottom of the 32 bit stack, and check on each return from a 32 bit function whether it's still there. Complain if it's not. * [if1632/user.spec] Wrong entry for CloseDriver(). * [misc/dos_fs.c] [loader/task.c] [include/dos_fs.h] [misc/file.c] [miscemu/int21.c] Large parts of dos_fs.c simplified. Changed it to use one current drive/directory per task, which is set to the module path on task creation. Prevent CorelPaint from closing stdin. open() with O_CREAT set must be passed three parameters. DOS FindFirst()/FindNext() could crash when FA_LABEL was set. Fixed, it's in DOS_readdir() now. * [misc/profile.c] Some badly written software (Lotus Freelance Graphics) passes a bogus size parameter that caused Wine to write off the end of a segment. Fixed. (It's probably too paranoid now.) * [multimedia/mmsystem.c] [multimedia/time.c] [multimedia/joystick.c] [multimedia/Imakefile] [if1632/winprocs.spec] 16 bit entry point for MMSysTimeCallback. Split off time.c and joystick.c from mmsystem.c. * [objects/dib.c] GetDIBits(): call XGetImage() via CallTo32_LargeStack. * [windows/cursor.c] DestroyCursor(): do nothing for builtin cursors. * [windows/mdi.c] Half of WM_MDISETMENU implemented. * [windows/win.c] EnumWindows() and EnumTaskWindows() never enumerated any windows. Fixed. * [windows/*.c] Fixed GetParent() to return correct values for owned windows. * [windows/message.c] Don't try to activate disabled top-level windows. * [windows/nonclient.c] Work around a bug in gcc-2.7.0. * [tools/build.c] [include/stackframe.h] [memory/global.c] [loader/task.c] [memory/selector.c] Some Visual Basic programs (and possibly others, too) expect ES to be preserved by a call to an API function, so we have to save it. In GlobalFree() and FreeSelector(), we must clear CURRENT_STACK16->es to prevent segfaults if ES contained the selector to be freed. Sun Jul 9 20:21:20 1995 Jon Tombs <jon@gtex02.us.es> * [*/*] Added missing prototypes to header files and relevant includes to reduce compile time warnings. Sun Jul 9 18:32:56 1995 Michael Patra <micky@marie.physik.tu-berlin.de> * [configure.in] [include/config.h] [*/Makefile.in] New configuration scheme based on autoconf. Sat Jul 8 14:12:45 1995 Morten Welinder <terra+@cs.cmu.edu> * [miscemu/ioports.c] Revamp to have only one in- and one out- variant, both really implemented. * [miscemu/instr.c] INSTR_EmulateInstruction: Use new ioport interface. Implement string io. Correct instruction pointer for 32-bit code. * [include/miscemu.h] Update port function prototypes. * [include/registers.h] Defined FS and GS. Sat Jul 8 13:38:54 1995 Hans de Graaff <graaff@twi72.twi.tudelft.nl> * [misc/dos_fs.c] ChopOffSlash(): A path consisting off a single slash is left intact, and multiple slashes are all removed.
199 lines
6.2 KiB
C
199 lines
6.2 KiB
C
/*
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* LDT manipulation functions
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*
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* Copyright 1993 Robert J. Amstadt
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* Copyright 1995 Alexandre Julliard
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <errno.h>
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#include "ldt.h"
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#include "stddebug.h"
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#include "debug.h"
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#ifndef WINELIB
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#ifdef linux
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#include <linux/unistd.h>
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#include <linux/head.h>
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#include <linux/ldt.h>
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_syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount)
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#endif /* linux */
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#if defined(__NetBSD__) || defined(__FreeBSD__)
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#include <machine/segments.h>
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extern int i386_get_ldt(int, union descriptor *, int);
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extern int i386_set_ldt(int, union descriptor *, int);
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#endif /* __NetBSD__ || __FreeBSD__ */
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#endif /* ifndef WINELIB */
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ldt_copy_entry ldt_copy[LDT_SIZE] = { {0,0}, };
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unsigned char ldt_flags_copy[LDT_SIZE] = { 0, };
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/***********************************************************************
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* LDT_BytesToEntry
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*
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* Convert the raw bytes of the descriptor to an ldt_entry structure.
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*/
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void LDT_BytesToEntry( const unsigned long *buffer, ldt_entry *content )
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{
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content->base = (*buffer >> 16) & 0x0000ffff;
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content->limit = *buffer & 0x0000ffff;
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buffer++;
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content->base |= (*buffer & 0xff000000) | ((*buffer << 16) & 0x00ff0000);
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content->limit |= (*buffer & 0x000f0000);
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content->type = (*buffer >> 10) & 3;
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content->seg_32bit = (*buffer & 0x00400000) != 0;
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content->read_only = (*buffer & 0x00000200) == 0;
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content->limit_in_pages = (*buffer & 0x00800000) != 0;
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}
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/***********************************************************************
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* LDT_EntryToBytes
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*
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* Convert an ldt_entry structure to the raw bytes of the descriptor.
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*/
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void LDT_EntryToBytes( unsigned long *buffer, const ldt_entry *content )
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{
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*buffer++ = ((content->base & 0x0000ffff) << 16) |
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(content->limit & 0x0ffff);
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*buffer = (content->base & 0xff000000) |
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((content->base & 0x00ff0000)>>16) |
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(content->limit & 0xf0000) |
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(content->type << 10) |
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((content->read_only == 0) << 9) |
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((content->seg_32bit != 0) << 22) |
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((content->limit_in_pages != 0) << 23) |
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0xf000;
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}
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/***********************************************************************
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* LDT_GetEntry
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*
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* Retrieve an LDT entry.
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*/
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int LDT_GetEntry( int entry, ldt_entry *content )
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{
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int ret = 0;
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content->base = ldt_copy[entry].base;
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content->limit = ldt_copy[entry].limit;
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content->type = (ldt_flags_copy[entry] & LDT_FLAGS_TYPE);
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content->seg_32bit = (ldt_flags_copy[entry] & LDT_FLAGS_32BIT) != 0;
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content->read_only = (ldt_flags_copy[entry] & LDT_FLAGS_READONLY) !=0;
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content->limit_in_pages = (ldt_flags_copy[entry] & LDT_FLAGS_BIG) !=0;
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return ret;
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}
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/***********************************************************************
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* LDT_SetEntry
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*
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* Set an LDT entry.
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*/
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int LDT_SetEntry( int entry, const ldt_entry *content )
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{
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int ret = 0;
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dprintf_ldt(stddeb,
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"LDT_SetEntry: entry=%04x base=%08lx limit=%05lx %s %d-bit flags=%c%c%c\n",
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entry, content->base, content->limit,
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content->limit_in_pages ? "pages" : "bytes",
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content->seg_32bit ? 32 : 16,
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content->read_only && (content->type & SEGMENT_CODE) ? '-' : 'r',
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content->read_only || (content->type & SEGMENT_CODE) ? '-' : 'w',
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(content->type & SEGMENT_CODE) ? 'x' : '-' );
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/* Entry 0 must not be modified; its base and limit are always 0 */
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if (!entry) return 0;
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#ifndef WINELIB
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#ifdef linux
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{
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struct modify_ldt_ldt_s ldt_info;
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memset( &ldt_info, 0, sizeof(ldt_info) );
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ldt_info.entry_number = entry;
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ldt_info.base_addr = content->base;
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ldt_info.limit = content->limit;
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ldt_info.seg_32bit = content->seg_32bit != 0;
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ldt_info.contents = content->type;
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ldt_info.read_exec_only = content->read_only != 0;
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ldt_info.limit_in_pages = content->limit_in_pages != 0;
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ret = modify_ldt(1, &ldt_info, sizeof(ldt_info));
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}
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#endif /* linux */
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#if defined(__NetBSD__) || defined(__FreeBSD__)
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{
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long d[2];
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LDT_EntryToBytes( d, content );
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ret = i386_set_ldt(entry, (union descriptor *)d, 1);
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if (ret < 0)
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{
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perror("i386_set_ldt");
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fprintf(stderr,
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"Did you reconfigure the kernel with \"options USER_LDT\"?\n");
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exit(1);
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}
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}
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#endif /* __NetBSD__ || __FreeBSD__ */
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#endif /* ifndef WINELIB */
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if (ret < 0) return ret;
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ldt_copy[entry].base = content->base;
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if (!content->limit_in_pages) ldt_copy[entry].limit = content->limit;
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else ldt_copy[entry].limit = (content->limit << 12) | 0x0fff;
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ldt_flags_copy[entry] = (content->type & LDT_FLAGS_TYPE) |
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(content->read_only ? LDT_FLAGS_READONLY : 0) |
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(content->seg_32bit ? LDT_FLAGS_32BIT : 0) |
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(content->limit_in_pages ? LDT_FLAGS_BIG : 0) |
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(ldt_flags_copy[entry] & LDT_FLAGS_ALLOCATED);
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return ret;
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}
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/***********************************************************************
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* LDT_Print
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*
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* Print the content of the LDT on stdout.
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*/
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void LDT_Print()
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{
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int i;
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char flags[3];
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for (i = 0; i < LDT_SIZE; i++)
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{
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if (!ldt_copy[i].base && !ldt_copy[i].limit) continue; /* Free entry */
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if ((ldt_flags_copy[i] & LDT_FLAGS_TYPE) == SEGMENT_CODE)
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{
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flags[0] = (ldt_flags_copy[i] & LDT_FLAGS_EXECONLY) ? '-' : 'r';
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flags[1] = '-';
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flags[2] = 'x';
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}
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else
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{
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flags[0] = 'r';
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flags[1] = (ldt_flags_copy[i] & LDT_FLAGS_READONLY) ? '-' : 'w';
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flags[2] = '-';
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}
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printf("%04x: sel=%04x base=%08lx limit=%05lx %s %d-bit %c%c%c\n",
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i, ENTRY_TO_SELECTOR(i),
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ldt_copy[i].base, ldt_copy[i].limit,
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ldt_flags_copy[i] & LDT_FLAGS_BIG ? "(pages)" : "(bytes)",
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ldt_flags_copy[i] & LDT_FLAGS_32BIT ? 32 : 16,
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flags[0], flags[1], flags[2] );
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}
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}
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