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wine/dlls/toolhelp.dll16/toolhelp.c
Alexandre Julliard ac5319630d krnl386.exe: Retrieve the page size from ntdll.
2013-01-08 16:35:31 +01:00

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/*
* Toolhelp functions
*
* Copyright 1996 Marcus Meissner
* Copyright 2009 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
*/
#include "config.h"
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <ctype.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "winternl.h"
#include "wownt32.h"
#include "wine/winbase16.h"
#include "toolhelp.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(toolhelp);
#include "pshpack1.h"
typedef struct
{
void *base; /* Base address (0 if discarded) */
DWORD size; /* Size in bytes (0 indicates a free block) */
HGLOBAL16 handle; /* Handle for this block */
HGLOBAL16 hOwner; /* Owner of this block */
BYTE lockCount; /* Count of GlobalFix() calls */
BYTE pageLockCount; /* Count of GlobalPageLock() calls */
BYTE flags; /* Allocation flags */
BYTE selCount; /* Number of selectors allocated for this block */
} GLOBALARENA;
#define GLOBAL_MAX_COUNT 8192 /* Max number of allocated blocks */
typedef struct
{
WORD check; /* 00 Heap checking flag */
WORD freeze; /* 02 Heap frozen flag */
WORD items; /* 04 Count of items on the heap */
WORD first; /* 06 First item of the heap */
WORD pad1; /* 08 Always 0 */
WORD last; /* 0a Last item of the heap */
WORD pad2; /* 0c Always 0 */
BYTE ncompact; /* 0e Compactions counter */
BYTE dislevel; /* 0f Discard level */
DWORD distotal; /* 10 Total bytes discarded */
WORD htable; /* 14 Pointer to handle table */
WORD hfree; /* 16 Pointer to free handle table */
WORD hdelta; /* 18 Delta to expand the handle table */
WORD expand; /* 1a Pointer to expand function (unused) */
WORD pstat; /* 1c Pointer to status structure (unused) */
FARPROC16 notify; /* 1e Pointer to LocalNotify() function */
WORD lock; /* 22 Lock count for the heap */
WORD extra; /* 24 Extra bytes to allocate when expanding */
WORD minsize; /* 26 Minimum size of the heap */
WORD magic; /* 28 Magic number */
} LOCALHEAPINFO;
typedef struct
{
/* Arena header */
WORD prev; /* Previous arena | arena type */
WORD next; /* Next arena */
/* Start of the memory block or free-list info */
WORD size; /* Size of the free block */
WORD free_prev; /* Previous free block */
WORD free_next; /* Next free block */
} LOCALARENA;
#define LOCAL_ARENA_HEADER_SIZE 4
#define LOCAL_ARENA_HEADER( handle) ((handle) - LOCAL_ARENA_HEADER_SIZE)
#define LOCAL_ARENA_PTR(ptr,arena) ((LOCALARENA *)((char *)(ptr)+(arena)))
typedef struct
{
WORD null; /* Always 0 */
DWORD old_ss_sp; /* Stack pointer; used by SwitchTaskTo() */
WORD heap; /* Pointer to the local heap information (if any) */
WORD atomtable; /* Pointer to the local atom table (if any) */
WORD stacktop; /* Top of the stack */
WORD stackmin; /* Lowest stack address used so far */
WORD stackbottom; /* Bottom of the stack */
} INSTANCEDATA;
typedef struct _THHOOK
{
HANDLE16 hGlobalHeap; /* 00 (handle BURGERMASTER) */
WORD pGlobalHeap; /* 02 (selector BURGERMASTER) */
HMODULE16 hExeHead; /* 04 hFirstModule */
HMODULE16 hExeSweep; /* 06 (unused) */
HANDLE16 TopPDB; /* 08 (handle of KERNEL PDB) */
HANDLE16 HeadPDB; /* 0A (first PDB in list) */
HANDLE16 TopSizePDB; /* 0C (unused) */
HTASK16 HeadTDB; /* 0E hFirstTask */
HTASK16 CurTDB; /* 10 hCurrentTask */
HTASK16 LoadTDB; /* 12 (unused) */
HTASK16 LockTDB; /* 14 hLockedTask */
} THHOOK;
typedef struct _NE_MODULE
{
WORD ne_magic; /* 00 'NE' signature */
WORD count; /* 02 Usage count (ne_ver/ne_rev on disk) */
WORD ne_enttab; /* 04 Near ptr to entry table */
HMODULE16 next; /* 06 Selector to next module (ne_cbenttab on disk) */
WORD dgroup_entry; /* 08 Near ptr to segment entry for DGROUP (ne_crc on disk) */
WORD fileinfo; /* 0a Near ptr to file info (OFSTRUCT) (ne_crc on disk) */
WORD ne_flags; /* 0c Module flags */
WORD ne_autodata; /* 0e Logical segment for DGROUP */
WORD ne_heap; /* 10 Initial heap size */
WORD ne_stack; /* 12 Initial stack size */
DWORD ne_csip; /* 14 Initial cs:ip */
DWORD ne_sssp; /* 18 Initial ss:sp */
WORD ne_cseg; /* 1c Number of segments in segment table */
WORD ne_cmod; /* 1e Number of module references */
WORD ne_cbnrestab; /* 20 Size of non-resident names table */
WORD ne_segtab; /* 22 Near ptr to segment table */
WORD ne_rsrctab; /* 24 Near ptr to resource table */
WORD ne_restab; /* 26 Near ptr to resident names table */
WORD ne_modtab; /* 28 Near ptr to module reference table */
WORD ne_imptab; /* 2a Near ptr to imported names table */
DWORD ne_nrestab; /* 2c File offset of non-resident names table */
WORD ne_cmovent; /* 30 Number of moveable entries in entry table*/
WORD ne_align; /* 32 Alignment shift count */
WORD ne_cres; /* 34 # of resource segments */
BYTE ne_exetyp; /* 36 Operating system flags */
BYTE ne_flagsothers; /* 37 Misc. flags */
HANDLE16 dlls_to_init; /* 38 List of DLLs to initialize (ne_pretthunks on disk) */
HANDLE16 nrname_handle; /* 3a Handle to non-resident name table (ne_psegrefbytes on disk) */
WORD ne_swaparea; /* 3c Min. swap area size */
WORD ne_expver; /* 3e Expected Windows version */
/* From here, these are extra fields not present in normal Windows */
HMODULE module32; /* PE module handle for Win32 modules */
HMODULE owner32; /* PE module containing this one for 16-bit builtins */
HMODULE16 self; /* Handle for this module */
WORD self_loading_sel; /* Selector used for self-loading apps. */
LPVOID rsrc32_map; /* HRSRC 16->32 map (for 32-bit modules) */
LPCVOID mapping; /* mapping of the binary file */
SIZE_T mapping_size; /* size of the file mapping */
} NE_MODULE;
#include "poppack.h"
#define TDB_MAGIC ('T' | ('D' << 8))
/* FIXME: to make this work, we have to call back all these registered
* functions from all over the WINE code. Someone with more knowledge than
* me please do that. -Marcus
*/
static struct notify
{
HTASK16 htask;
FARPROC16 lpfnCallback;
WORD wFlags;
} *notifys = NULL;
static int nrofnotifys = 0;
static THHOOK *get_thhook(void)
{
static THHOOK *thhook;
if (!thhook) thhook = MapSL( (SEGPTR)GetProcAddress16( GetModuleHandle16("KERNEL"), (LPCSTR)332 ));
return thhook;
}
static GLOBALARENA *get_global_arena(void)
{
return *(GLOBALARENA **)get_thhook();
}
static LOCALHEAPINFO *get_local_heap( HANDLE16 ds )
{
INSTANCEDATA *ptr = MapSL( MAKESEGPTR( ds, 0 ));
if (!ptr || !ptr->heap) return NULL;
return (LOCALHEAPINFO*)((char*)ptr + ptr->heap);
}
/***********************************************************************
* GlobalHandleToSel (TOOLHELP.50)
*/
WORD WINAPI GlobalHandleToSel16( HGLOBAL16 handle )
{
if (!handle) return 0;
if (!(handle & 7)) return handle - 1;
return handle | 7;
}
/***********************************************************************
* GlobalFirst (TOOLHELP.51)
*/
BOOL16 WINAPI GlobalFirst16( GLOBALENTRY *pGlobal, WORD wFlags )
{
if (wFlags == GLOBAL_LRU) return FALSE;
pGlobal->dwNext = 0;
return GlobalNext16( pGlobal, wFlags );
}
/***********************************************************************
* GlobalNext (TOOLHELP.52)
*/
BOOL16 WINAPI GlobalNext16( GLOBALENTRY *pGlobal, WORD wFlags)
{
GLOBALARENA *pGlobalArena = get_global_arena();
GLOBALARENA *pArena;
if (pGlobal->dwNext >= GLOBAL_MAX_COUNT) return FALSE;
pArena = pGlobalArena + pGlobal->dwNext;
if (wFlags == GLOBAL_FREE) /* only free blocks */
{
int i;
for (i = pGlobal->dwNext; i < GLOBAL_MAX_COUNT; i++, pArena++)
if (pArena->size == 0) break; /* block is free */
if (i >= GLOBAL_MAX_COUNT) return FALSE;
pGlobal->dwNext = i;
}
pGlobal->dwAddress = (DWORD_PTR)pArena->base;
pGlobal->dwBlockSize = pArena->size;
pGlobal->hBlock = pArena->handle;
pGlobal->wcLock = pArena->lockCount;
pGlobal->wcPageLock = pArena->pageLockCount;
pGlobal->wFlags = (GetCurrentPDB16() == pArena->hOwner);
pGlobal->wHeapPresent = FALSE;
pGlobal->hOwner = pArena->hOwner;
pGlobal->wType = GT_UNKNOWN;
pGlobal->wData = 0;
pGlobal->dwNext++;
return TRUE;
}
/***********************************************************************
* GlobalInfo (TOOLHELP.53)
*/
BOOL16 WINAPI GlobalInfo16( GLOBALINFO *pInfo )
{
GLOBALARENA *pGlobalArena = get_global_arena();
GLOBALARENA *pArena;
int i;
pInfo->wcItems = GLOBAL_MAX_COUNT;
pInfo->wcItemsFree = 0;
pInfo->wcItemsLRU = 0;
for (i = 0, pArena = pGlobalArena; i < GLOBAL_MAX_COUNT; i++, pArena++)
if (pArena->size == 0) pInfo->wcItemsFree++;
return TRUE;
}
/***********************************************************************
* GlobalEntryHandle (TOOLHELP.54)
*/
BOOL16 WINAPI GlobalEntryHandle16( GLOBALENTRY *pGlobal, HGLOBAL16 hItem )
{
GLOBALARENA *pGlobalArena = get_global_arena();
GLOBALARENA *pArena = pGlobalArena + (hItem >> __AHSHIFT);
pGlobal->dwAddress = (DWORD_PTR)pArena->base;
pGlobal->dwBlockSize = pArena->size;
pGlobal->hBlock = pArena->handle;
pGlobal->wcLock = pArena->lockCount;
pGlobal->wcPageLock = pArena->pageLockCount;
pGlobal->wFlags = (GetCurrentPDB16() == pArena->hOwner);
pGlobal->wHeapPresent = FALSE;
pGlobal->hOwner = pArena->hOwner;
pGlobal->wType = GT_UNKNOWN;
pGlobal->wData = 0;
pGlobal->dwNext++;
return TRUE;
}
/***********************************************************************
* GlobalEntryModule (TOOLHELP.55)
*/
BOOL16 WINAPI GlobalEntryModule16( GLOBALENTRY *pGlobal, HMODULE16 hModule,
WORD wSeg )
{
FIXME("(%p, 0x%04x, 0x%04x), stub.\n", pGlobal, hModule, wSeg);
return FALSE;
}
/***********************************************************************
* LocalInfo (TOOLHELP.56)
*/
BOOL16 WINAPI LocalInfo16( LOCALINFO *pLocalInfo, HGLOBAL16 handle )
{
LOCALHEAPINFO *pInfo = get_local_heap( SELECTOROF(WOWGlobalLock16(handle)) );
if (!pInfo) return FALSE;
pLocalInfo->wcItems = pInfo->items;
return TRUE;
}
/***********************************************************************
* LocalFirst (TOOLHELP.57)
*/
BOOL16 WINAPI LocalFirst16( LOCALENTRY *pLocalEntry, HGLOBAL16 handle )
{
WORD ds = GlobalHandleToSel16( handle );
char *ptr = MapSL( MAKESEGPTR( ds, 0 ) );
LOCALHEAPINFO *pInfo = get_local_heap( ds );
if (!pInfo) return FALSE;
pLocalEntry->hHandle = pInfo->first + LOCAL_ARENA_HEADER_SIZE;
pLocalEntry->wAddress = pLocalEntry->hHandle;
pLocalEntry->wFlags = LF_FIXED;
pLocalEntry->wcLock = 0;
pLocalEntry->wType = LT_NORMAL;
pLocalEntry->hHeap = handle;
pLocalEntry->wHeapType = NORMAL_HEAP;
pLocalEntry->wNext = LOCAL_ARENA_PTR(ptr,pInfo->first)->next;
pLocalEntry->wSize = pLocalEntry->wNext - pLocalEntry->hHandle;
return TRUE;
}
/***********************************************************************
* LocalNext (TOOLHELP.58)
*/
BOOL16 WINAPI LocalNext16( LOCALENTRY *pLocalEntry )
{
WORD ds = GlobalHandleToSel16( pLocalEntry->hHeap );
char *ptr = MapSL( MAKESEGPTR( ds, 0 ) );
LOCALARENA *pArena;
if (!get_local_heap( ds )) return FALSE;
if (!pLocalEntry->wNext) return FALSE;
pArena = LOCAL_ARENA_PTR( ptr, pLocalEntry->wNext );
pLocalEntry->hHandle = pLocalEntry->wNext + LOCAL_ARENA_HEADER_SIZE;
pLocalEntry->wAddress = pLocalEntry->hHandle;
pLocalEntry->wFlags = (pArena->prev & 3) + 1;
pLocalEntry->wcLock = 0;
pLocalEntry->wType = LT_NORMAL;
if (pArena->next != pLocalEntry->wNext) /* last one? */
pLocalEntry->wNext = pArena->next;
else
pLocalEntry->wNext = 0;
pLocalEntry->wSize = pLocalEntry->wNext - pLocalEntry->hHandle;
return TRUE;
}
/**********************************************************************
* ModuleFirst (TOOLHELP.59)
*/
BOOL16 WINAPI ModuleFirst16( MODULEENTRY *lpme )
{
lpme->wNext = get_thhook()->hExeHead;
return ModuleNext16( lpme );
}
/**********************************************************************
* ModuleNext (TOOLHELP.60)
*/
BOOL16 WINAPI ModuleNext16( MODULEENTRY *lpme )
{
NE_MODULE *pModule;
char *name;
if (!lpme->wNext) return FALSE;
if (!(pModule = GlobalLock16( GetExePtr(lpme->wNext) ))) return FALSE;
name = (char *)pModule + pModule->ne_restab;
memcpy( lpme->szModule, name + 1, min(*name, MAX_MODULE_NAME) );
lpme->szModule[min(*name, MAX_MODULE_NAME)] = '\0';
lpme->hModule = lpme->wNext;
lpme->wcUsage = pModule->count;
name = ((OFSTRUCT *)((char*)pModule + pModule->fileinfo))->szPathName;
lstrcpynA( lpme->szExePath, name, sizeof(lpme->szExePath) );
lpme->wNext = pModule->next;
return TRUE;
}
/**********************************************************************
* ModuleFindName (TOOLHELP.61)
*/
BOOL16 WINAPI ModuleFindName16( MODULEENTRY *lpme, LPCSTR name )
{
lpme->wNext = GetModuleHandle16( name );
return ModuleNext16( lpme );
}
/**********************************************************************
* ModuleFindHandle (TOOLHELP.62)
*/
BOOL16 WINAPI ModuleFindHandle16( MODULEENTRY *lpme, HMODULE16 hModule )
{
hModule = GetExePtr( hModule );
lpme->wNext = hModule;
return ModuleNext16( lpme );
}
/***********************************************************************
* TaskFirst (TOOLHELP.63)
*/
BOOL16 WINAPI TaskFirst16( TASKENTRY *lpte )
{
lpte->hNext = get_thhook()->HeadTDB;
return TaskNext16( lpte );
}
/***********************************************************************
* TaskNext (TOOLHELP.64)
*/
BOOL16 WINAPI TaskNext16( TASKENTRY *lpte )
{
TDB *pTask;
INSTANCEDATA *pInstData;
TRACE_(toolhelp)("(%p): task=%04x\n", lpte, lpte->hNext );
if (!lpte->hNext) return FALSE;
/* make sure that task and hInstance are valid (skip initial Wine task !) */
while (1) {
pTask = GlobalLock16( lpte->hNext );
if (!pTask || pTask->magic != TDB_MAGIC) return FALSE;
if (pTask->hInstance)
break;
lpte->hNext = pTask->hNext;
}
pInstData = MapSL( MAKESEGPTR( GlobalHandleToSel16(pTask->hInstance), 0 ) );
lpte->hTask = lpte->hNext;
lpte->hTaskParent = pTask->hParent;
lpte->hInst = pTask->hInstance;
lpte->hModule = pTask->hModule;
lpte->wSS = SELECTOROF( pTask->teb->WOW32Reserved );
lpte->wSP = OFFSETOF( pTask->teb->WOW32Reserved );
lpte->wStackTop = pInstData->stacktop;
lpte->wStackMinimum = pInstData->stackmin;
lpte->wStackBottom = pInstData->stackbottom;
lpte->wcEvents = pTask->nEvents;
lpte->hQueue = pTask->hQueue;
lstrcpynA( lpte->szModule, pTask->module_name, sizeof(lpte->szModule) );
lpte->wPSPOffset = 0x100; /*??*/
lpte->hNext = pTask->hNext;
return TRUE;
}
/***********************************************************************
* TaskFindHandle (TOOLHELP.65)
*/
BOOL16 WINAPI TaskFindHandle16( TASKENTRY *lpte, HTASK16 hTask )
{
lpte->hNext = hTask;
return TaskNext16( lpte );
}
/***********************************************************************
* MemManInfo (TOOLHELP.72)
*/
BOOL16 WINAPI MemManInfo16( MEMMANINFO *info )
{
SYSTEM_BASIC_INFORMATION sbi;
MEMORYSTATUS status;
/*
* Not unsurprisingly although the documentation says you
* _must_ provide the size in the dwSize field, this function
* (under Windows) always fills the structure and returns true.
*/
NtQuerySystemInformation( SystemBasicInformation, &sbi, sizeof(sbi), NULL );
GlobalMemoryStatus( &status );
info->wPageSize = sbi.PageSize;
info->dwLargestFreeBlock = status.dwAvailVirtual;
info->dwMaxPagesAvailable = info->dwLargestFreeBlock / info->wPageSize;
info->dwMaxPagesLockable = info->dwMaxPagesAvailable;
info->dwTotalLinearSpace = status.dwTotalVirtual / info->wPageSize;
info->dwTotalUnlockedPages = info->dwTotalLinearSpace;
info->dwFreePages = info->dwMaxPagesAvailable;
info->dwTotalPages = info->dwTotalLinearSpace;
info->dwFreeLinearSpace = info->dwMaxPagesAvailable;
info->dwSwapFilePages = status.dwTotalPageFile / info->wPageSize;
return TRUE;
}
/***********************************************************************
* NotifyRegister (TOOLHELP.73)
*/
BOOL16 WINAPI NotifyRegister16( HTASK16 htask, FARPROC16 lpfnCallback,
WORD wFlags )
{
int i;
FIXME("(%x,%x,%x), semi-stub.\n",
htask, (DWORD)lpfnCallback, wFlags );
if (!htask) htask = GetCurrentTask();
for (i=0;i<nrofnotifys;i++)
if (notifys[i].htask==htask)
break;
if (i==nrofnotifys) {
if (notifys==NULL)
notifys=HeapAlloc( GetProcessHeap(), 0,
sizeof(struct notify) );
else
notifys=HeapReAlloc( GetProcessHeap(), 0, notifys,
sizeof(struct notify)*(nrofnotifys+1));
if (!notifys) return FALSE;
nrofnotifys++;
}
notifys[i].htask=htask;
notifys[i].lpfnCallback=lpfnCallback;
notifys[i].wFlags=wFlags;
return TRUE;
}
/***********************************************************************
* NotifyUnregister (TOOLHELP.74)
*/
BOOL16 WINAPI NotifyUnregister16( HTASK16 htask )
{
int i;
FIXME("(%x), semi-stub.\n", htask );
if (!htask) htask = GetCurrentTask();
for (i=nrofnotifys;i--;)
if (notifys[i].htask==htask)
break;
if (i==-1)
return FALSE;
memcpy(notifys+i,notifys+(i+1),sizeof(struct notify)*(nrofnotifys-i-1));
notifys=HeapReAlloc( GetProcessHeap(), 0, notifys,
(nrofnotifys-1)*sizeof(struct notify));
nrofnotifys--;
return TRUE;
}
/***********************************************************************
* StackTraceCSIPFirst (TOOLHELP.67)
*/
BOOL16 WINAPI StackTraceCSIPFirst16(STACKTRACEENTRY *ste, WORD wSS, WORD wCS, WORD wIP, WORD wBP)
{
FIXME("(%p, ss %04x, cs %04x, ip %04x, bp %04x): stub.\n", ste, wSS, wCS, wIP, wBP);
return TRUE;
}
/***********************************************************************
* StackTraceFirst (TOOLHELP.66)
*/
BOOL16 WINAPI StackTraceFirst16(STACKTRACEENTRY *ste, HTASK16 Task)
{
FIXME("(%p, %04x), stub.\n", ste, Task);
return TRUE;
}
/***********************************************************************
* StackTraceNext (TOOLHELP.68)
*/
BOOL16 WINAPI StackTraceNext16(STACKTRACEENTRY *ste)
{
FIXME("(%p), stub.\n", ste);
return TRUE;
}
/***********************************************************************
* InterruptRegister (TOOLHELP.75)
*/
BOOL16 WINAPI InterruptRegister16( HTASK16 task, FARPROC callback )
{
FIXME("(%04x, %p), stub.\n", task, callback);
return TRUE;
}
/***********************************************************************
* InterruptUnRegister (TOOLHELP.76)
*/
BOOL16 WINAPI InterruptUnRegister16( HTASK16 task )
{
FIXME("(%04x), stub.\n", task);
return TRUE;
}
/***********************************************************************
* TerminateApp (TOOLHELP.77)
*
* See "Undocumented Windows".
*/
void WINAPI TerminateApp16(HTASK16 hTask, WORD wFlags)
{
if (hTask && hTask != GetCurrentTask())
{
FIXME("cannot terminate task %x\n", hTask);
return;
}
#if 0 /* FIXME */
/* check undocumented flag */
if (!(wFlags & 0x8000))
TASK_CallTaskSignalProc( USIG16_TERMINATION, hTask );
#endif
/* UndocWin says to call int 0x21/0x4c exit=0xff here,
but let's just call ExitThread */
ExitThread(0xff);
}
/***********************************************************************
* MemoryRead (TOOLHELP.78)
*/
DWORD WINAPI MemoryRead16( WORD sel, DWORD offset, void *buffer, DWORD count )
{
LDT_ENTRY entry;
DWORD limit;
wine_ldt_get_entry( sel, &entry );
if (wine_ldt_is_empty( &entry )) return 0;
limit = wine_ldt_get_limit( &entry );
if (offset > limit) return 0;
if (offset + count > limit + 1) count = limit + 1 - offset;
memcpy( buffer, (char *)wine_ldt_get_base(&entry) + offset, count );
return count;
}
/***********************************************************************
* MemoryWrite (TOOLHELP.79)
*/
DWORD WINAPI MemoryWrite16( WORD sel, DWORD offset, void *buffer, DWORD count )
{
LDT_ENTRY entry;
DWORD limit;
wine_ldt_get_entry( sel, &entry );
if (wine_ldt_is_empty( &entry )) return 0;
limit = wine_ldt_get_limit( &entry );
if (offset > limit) return 0;
if (offset + count > limit) count = limit + 1 - offset;
memcpy( (char *)wine_ldt_get_base(&entry) + offset, buffer, count );
return count;
}
/***********************************************************************
* TimerCount (TOOLHELP.80)
*/
BOOL16 WINAPI TimerCount16( TIMERINFO *pTimerInfo )
{
/* FIXME
* In standard mode, dwmsSinceStart = dwmsThisVM
*
* I tested this, under Windows in enhanced mode, and
* if you never switch VM (ie start/stop DOS) these
* values should be the same as well.
*
* Also, Wine should adjust for the hardware timer
* to reduce the amount of error to ~1ms.
* I can't be bothered, can you?
*/
pTimerInfo->dwmsSinceStart = pTimerInfo->dwmsThisVM = GetTickCount();
return TRUE;
}
/***********************************************************************
* SystemHeapInfo (TOOLHELP.71)
*/
BOOL16 WINAPI SystemHeapInfo16( SYSHEAPINFO *pHeapInfo )
{
STACK16FRAME* stack16 = MapSL((SEGPTR)NtCurrentTeb()->WOW32Reserved);
HANDLE16 oldDS = stack16->ds;
WORD user = LoadLibrary16( "USER.EXE" );
WORD gdi = LoadLibrary16( "GDI.EXE" );
stack16->ds = user;
pHeapInfo->wUserFreePercent = (int)LocalCountFree16() * 100 / LocalHeapSize16();
stack16->ds = gdi;
pHeapInfo->wGDIFreePercent = (int)LocalCountFree16() * 100 / LocalHeapSize16();
stack16->ds = oldDS;
pHeapInfo->hUserSegment = user;
pHeapInfo->hGDISegment = gdi;
FreeLibrary16( user );
FreeLibrary16( gdi );
return TRUE;
}
/***********************************************************************
* Local32Info (TOOLHELP.84)
*/
BOOL16 WINAPI Local32Info16( LOCAL32INFO *pLocal32Info, HGLOBAL16 handle )
{
FIXME( "Call Local32Info16 in kernel\n" );
return FALSE;
}
/***********************************************************************
* Local32First (TOOLHELP.85)
*/
BOOL16 WINAPI Local32First16( LOCAL32ENTRY *pLocal32Entry, HGLOBAL16 handle )
{
FIXME( "Call Local32First16 in kernel\n" );
return FALSE;
}
/***********************************************************************
* Local32Next (TOOLHELP.86)
*/
BOOL16 WINAPI Local32Next16( LOCAL32ENTRY *pLocal32Entry )
{
FIXME( "Call Local32Next16 in kernel\n" );
return FALSE;
}
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